Based on the Biot’s dynamic consolidation equation and Novak’s plane strain theory, a coupled mechanical model of radially heterogeneous saturated soil and wedge-shaped pile was established under the horizontal vibration, by considering the construction disturbance effect of the surrounding saturated soil. Then, the analytical solution for the horizontal impedance of the pile head was obtained by using the potential function, Laplace transformation and variable separation methods, and the accuracy of the solution was verified by degenerating with the existing literature solutions. On this basis, the effects of the pile’s parameters and construction disturbance effect on the horizontal vibration characteristics of wedge-shaped pile are further discussed by conducting an extensive parametric analysis. The results show that: The horizontal impedance of the pile head tends to be stable when the number of pile-soil system layers reaches 100. With the increase of softening degree and range of surrounding saturated soil, the horizontal impedance of the pile head decreases, while both the horizontal displacement and bending moment of pile shaft increase. The reasonableness and reliability of the analytical model and solution proposed in this paper are verified by comparative analysis in many aspects.

In order to accurately reveal the impact of high-speed train operation on the vibration response of foundation, the out-of-round wheels and uneven rail surface were introduced to modify the quasi-static moving load. Based on the 2.5D finite element equation of nearly-saturated foundation, a train-track-quasi saturated foundation dynamic analysis model has been established. On this basis, the vibration response of nearly-saturated foundation under different train speeds and loads were analyzed. The results show that both of out-of-round wheels and uneven rail surface have little influence on the time history and peak value of displacement and acceleration at a low speed, whereas the vibration amplitude is significantly increased after the coupling of the two aspects. When the vehicle speed reaches the soil shear wave speed, the influence of out-of-round wheels and uneven rail surface on displacement and acceleration response gradually increases. Compared with the out-of-round wheels, rail surface unevenness has greater influence on nearly-saturated foundation vibration, and it is more sensitive to the change of vehicle speed. The pore water pressure decays rapidly within the range of 0~4 m below the center line of the track bed when the vehicle speed is low, and the pore pressure peak appears at 0.5 m below the track. After the vehicle speed increases, the peak value of pore pressure increases significantly under all kinds of modified loads, and the position of the peak value of pore pressure develops to the deeper part of the foundation under the condition of uneven rail surface and irregular wheel-rail. The vibration response of the nearly-saturated foundation under the irregular wheel-rail coupling condition is obviously greater than that under other load conditions. Therefore, the influence of out-of-round wheels and uneven rail surface should be considered simultaneously in the safety evaluation and foundation vibration response prediction of high-speed railway.

The strong surface impact loads caused by dynamic compaction and construction operations have significant implications on the surrounding environment. Traditional research methods often simplify the impact load as a triangular load for calculation. However, this simplification does not consider the energy loss during impact, leading to overestimation in the calculation results. This paper is based on the measured data from an actual dynamic compaction project. After validating the numerical method’s feasibility, a parametric analysis of key influencing factors is conducted. The paper proposes a reasonable reduction coefficient to modify the current triangular loading model. The objective is to improve the accuracy and applicability of the model for dynamic compaction projects. The calculation results indicate that the magnitude of impact energy and the soil parameters of the site are critical factors influencing the impact vibration response. It is suggested that for impact energy levels categorized as low, medium, and high, the reduction coefficients for medium-soft soil can be set as 0.85, 0.6 and 0.5, respectively. For medium-hard soil, the reduction coefficients can be set as 0.9, 0.7 and 0.6 for the corresponding low, medium, and high energy levels.

The ground motion of pulse type near fault has the characteristics of higher frequency, faster speed and more concentrated energy than that of a distant site, which has serious harm to engineering structures. With abundant water resources, frequent and high-intensity earthquakes occur in Western China, and many high dams are located near fault zones. The permanent deformation and slope safety of high dams under near-fault ground motion are very important. A random pulse ground motion model is established based on the pulse ground motion records of the Jiji near fault in Taiwan Province. Finite element analysis is carried out on the Gushui 250 m grade engineering panel dam, and stochastic dynamic analysis and reliability analysis are carried out on the displacement and slope slip of the high earth-rock dam by the direct probability integral method. The results show that pulse ground motion significantly affects on the vertical deformation and slope stability of high earth-rock dams. The seismic safety and seismic capability of high earth-rock dams near faults with high seismic risk are evaluated comprehensively.

To solve the problem of a lack of theoretical guidance in the simplification process of space pipe truss structure, the equivalent bending moment of inertia of space pipe truss structure was deduced by using the knowledge of material mechanics, and the corresponding calculation formula was put forward. Based on the principle of equal torsional strain energy, the formulas for calculating the equivalent thin plate thickness of the web members and the top and bottom lateral bracing of the pipe truss were derived, and the continuous equivalent section was constructed. The formula for calculating the equivalent torsional moment of inertia of the space pipe truss structure was proposed by using the thin-walled bar theory. The cantilever method was used to verify the accuracy of the calculation formula of equivalent moment of inertia. The equivalent analysis of the tennis court of Lanzhou Olympic Sports Center was carried out. The results show that the formula for calculating the equivalent moment of inertia is reasonable, and its error is within 4% compared with that of the cantilever method. Under the action of deadweight, the errors of the maximum displacement value and the maximum stress value between the original structure and the simplified structure of the tennis court are less than 9%. The vibration modes of the first five steps of the original structure are similar to those of the simplified structure, and their errors of the natural frequency are less than 4%, so the simplified structure has high accuracy.

The present study aims to improve the aerodynamic stability of a single-axis PV tracker. The effects of turbulence intensity, natural frequency and damping ratio on the aerodynamic stability of the single-axis PV tracker are studied by a sectional model wind tunnel test to reveal the sensitivity of these parameters. The results show unstable torsional vibration of the single-axis PV tracker system in a large tilt angle range with strong aerodynamic coupling and self-excited characteristics. The critical wind speed for the unstable vibration is low. The critical wind speed is high at 0° tilt angle (PV module is horizontal). The increase of turbulence intensity leads to the increase of the unstable vibration tilt angle range, which is not good for the aerodynamic stability. Increasing the damping ratio has an inconsiderable effect on increasing the critical wind speed at small tilt angles (0° and 5°). However, it works well when the tilt angle is larger than 15°. With the increase of natural frequency, the critical wind speed is significantly increased at all tilt angles.

As the thermonuclear fuel container in inertial confinement fusion (ICF), the surface quality of the target capsule directly affects the success of ICF experiments. Therefore, it is crucial to inspect the morphology of ICF microspheres before fabrication. To address the issue of secondary damage to the surface of ICF microspheres during manipulation by current detection equipment, a bulk acoustic wave-driven microsphere manipulation device is proposed. This device excites an out-of-plane bending vibration mode in a vibrator composed of a piezoelectric ceramic and a metal substrate, creating an acoustic field within the liquid. The ICF microspheres are then driven by non-contact acoustic radiation forces, enabling non-destructive manipulation during ICF microsphere inspection. To analyze the relationship between the vibration of the manipulation device and the generated acoustic field, we developed an electromechanical coupling dynamics model of the vibrator using the transfer matrix method. This model comprehensively considers factors such as the size, material, boundary conditions, arrangement of piezoelectric ceramic sheets, excitation voltage, and additional load from water of the vibrator. Using this model, we calculated the vibration modes of a non-resonant traveling wave and two resonant standing waves, along with three corresponding acoustic fields. Based on calculation results, we fabricated and assembled the prototype. Vibration characteristics and manipulation performance of the prototype were studied through experiments. The results indicate a good agreement between theoretical calculations and experimental tests regarding the vibration characteristics of the acoustic manipulation device, validating the correctness of the established dynamics model. Both non-resonant traveling waves and resonant standing waves can effectively manipulate ICF microspheres, with the resonant standing wave achieving faster microsphere movement. This confirms the feasibility and effectiveness of the proposed acoustic manipulation method. Furthermore, based on the modal switching measurement and control method, the device can classify ICF microspheres by diameter without the need for a microscope.

To address the dynamics modeling of a single local damage fault in rolling bearings, a comprehensive approach based on Hertz contact theory has been developed.Specifically, a contact deformation retention factor is defined and a variable stiffness function using a static analysis method is proposed. This allowed us to establish and simulate a variable stiffness dynamics model for a single local damage fault in rolling bearings under radial load. The model was also experimentally validated. The research results show that when the rolling element enters the load zone its effective contact stiffness suddenly increases. Conversely, when it exits the load zone or falls into the fault position, the stiffness suddenly decreases. This change causes the contact force and contact deformation of other load-carrying rolling elements in the load zone to suddenly decrease or increase to rebalance the external load. However, this does not affect the effective contact stiffness of the rolling element itself. The effect is more pronounced for rolling elements near the center of the load zone. Additionally, these changes cause the total effective stiffness of the system to suddenly increase or decrease, leading to system vibrations. When the outer race has a fault, the change in total effective stiffness is of equal amplitude, resulting in an equal-amplitude time-domain vibration response. In contrast, when the inner race has a fault, both the change in total effective stiffness and the response amplitude are modulated by the rotation of the inner race, leading to significant variations. The proposed variable stiffness dynamics model is more consistent with reality and provides a certain theoretical basis for effective diagnosis of rolling bearing faults.

A nested Chebyshev polynomial surrogate model and an improved particle swarm optimization (IPSO) algorithm are proposed to identify the bounds of input and structural parameters in the inverse dynamical problem of flexible multibody systems with interval uncertainty. Specifically, the dynamical model equations for a multibody system incorporating interval uncertainty are established. The interval midpoint and interval radius are used to describe the given output response with interval uncertainty. The Chebyshev polynomial surrogate model is established for the output response of a flexible multibody system. The IPSO algorithm is used to reverse the interval midpoint and interval radius of the unknown parameters in the flexible multibody system. The Chebyshev polynomial surrogate model is used in the proposed method to approximate the original interval uncertain flexible multibody system, thereby significantly reducing the computational cost of the optimization process of the IPSO algorithm.

Ambient vibration energy harvesting technology can provide green self-powered supply technology for low-power electronic devices in the Internet of Things (IoTs). In response to the shortcomings of traditional linear cantilever beam energy harvesters with high natural frequencies and low energy capture efficiency, a tuning fork-shaped cantilever beam structure is proposed to collect vibration energy in the environment. This overcomes the disadvantage of traditional cantilever beam structures, where the free end section, due to its small strain during vibration, is not conducive to energy collection. As a result, the energy harvesting efficiency of the system is significantly enhanced. The Lagrange equation is used to establish the dynamic equation of a tuning fork piezoelectric cantilever beam under harmonic excitation. The influence of structure size, added tip-mass and load resistance on the energy capture characteristics of the system are analyzed through a combination of the theoretical analysis, finite element simulation (FEM) and experimental results. The results show that introducing a bifurcation structure at the free end of the cantilever beam can reduce the fundamental frequency of the system, proving that the tuning fork piezoelectric cantilever beam energy harvester is more conducive to low-frequency ambient vibration energy harvesting. When the acceleration excitation amplitude is 0.5 m/s², the peak output power of the system is 7 mW. Further optimization of the structure by adding a 20 g tip-mass at the free end increases the peak energy capture output power to 18 mW. Design a piezoelectric energy capture interface circuit to collect and convert electrical energy directly to power LED lights (light emitting diodes). Experimental results can simultaneously light up 50 LED lights. The research results can provide theoretical support for energy collection in low-frequency vibration environments and for achieving self-powered design of low-power IoT sensors below 80 Hz.

Flexible structures actuated by smart materials have been widely used in the fields of underwater bionic robotics, precision medical machines, micro/nano devices, and so on. It is still a challenging task to acquire the hydrodynamic force exerted on the oscillating flexible structure by the surrounding fluid. The fluid-structure coupled dynamic equation of the MFC-actuated flexible structure is established. A cantilever-based measurement system for the hydrodynamic force is proposed, and the performance indexes are also proposed. The characteristic parameters of the force measurement device are calibrated by experiments. Then, dynamic variations of the hydrodynamic forces exerted on the MFC-actuated flexible structure at different actuation levels are acquired using the proposed system. The measured hydrodynamic forces are decomposed into two components, namely, the added mass force and the hydrodynamic damping force. Moreover, the inertia and drag coefficients in the form of Morrison’s expression are obtained. Experimental results show that the underwater oscillating amplitude of the MFC-actuated structure increases from 3.67 mm to a maximum of 4.23 mm, as the excitation frequencies increase from 2.5 Hz to the resonant frequency of 3.1 Hz. Accordingly, the measured hydrodynamic force exerted on the oscillating structure increases significantly from 86.16 to 184.83 mN. However, the hydrodynamic force stays roughly unchanged, differing by no more than 15%. The proposed method and measurement system may be helpful for the design and application of the underwater flexible structure actuated by MFC and other smart materials.

The acoustic black hole (ABH) effect, which decelerates the propagation of elastic waves and suppresses boundary reflections, presents a novel mechanism for vibration energy harvesting. A dual-ABH piezoelectric beam energy harvester has been designed for application in railway track systems. A semi-analytical electromechanical coupling model was developed using the energy functional variational principle and Gaussian expansion method. Validation was conducted through finite element simulations. Under train-induced loading, energy harvesting behavior was investigated with respect to ABH geometric parameters and terminal mass. Four principal energy harvesting bands were identified within the 0~1500 Hz range, yielding a peak output voltage of 4.83 V and a maximum efficiency of 2.23%. Optimal energy conversion was achieved when the piezoelectric patch length equaled half the bending wave wavelength of the host structure. Efficiency was further improved by strengthening the ABH effect or through appropriate tuning of the terminal mass.

As the main component of the train body structure, the truss-cored flat panel is situated close to the wheel-track noise source and has a large area for noise radiation, and its acoustic performance directly influences the riding comfort of trains. This paper first establishes the wavenumber finite-element model and a sound-insulation prediction model for an aluminum truss-cored train floor using wavenumber finite elements and boundary integral equations. The wavenumber, transmission loss, and eigenvectors of the structure are calculated. The dispersion characteristics, sound-insulation performance and cross-sectional wave-modes of elastic waves are studied. The calculated results are compared with the prediction given in the references to verify the proposed model. Furthermore, this paper investigates the effects of the core layer's topological geometry of the extruded panel on the sound-insulation characteristics of aluminum extruded panels. The results show that varying the topological configuration of the core layer significantly changes the variation pattern of dispersion curves of elastic waves, which affects the sound-insulation properties of aluminum extruded panels. By comparing the topologies of classic extruded structures, it is found that the ‘herringbone’ ribbed plate structure has a relatively higher sound-insulation level and lower mass. This study can provide a reference for designing quiet and lightweight extruded panels.

To achieve high-precision prediction of bridge-coupled extreme stresses, the wavelet multi-resolution analysis method is adopted to decouple the coupled extreme stresses. The decoupled low-frequency data is taken as the trend item information, where the high-frequency data is considered as the vehicle load effect information. The trend item, after subtracting its mean, is the temperature load effect information. A bivariate Bayesian dynamic linear trend model (BDLTM), which introduces a time-varying trend term, is built to predict and analyze low-frequency extreme stress. GRU neural network model is provided to predict and analyze high-frequency extreme stresses. The dynamic coupled extreme stresses are predicted. The monitoring coupled data from Tianjin Fumin Bridge is provided to illustrate the feasibility and application of the proposed BDLTM-GRU model, the accuracy of which is compared with the single BDLTM model and single GRU model for verifying the high precision of the BDLTM-GRU model.

Adaptive decomposition, reconstruction, and denoising of bridge structure monitoring signals are critical parts in the research field of bridge health monitoring. To provide efficient and effective time-frequency domain denoising methods for these signals, an Adaptive Variational Mode Decomposition and Reconstruction (AVMDR) method was proposed for signal denoising, which can overcome the disadvantage of VMD (Variational Mode Decomposition) type methods that the number of decomposition components needs to be determined inadvance. The Empirical Mode Decomposition (EMD) method was introduced to adaptively determine the number of decomposition components, and then the Multi-scale Principal Component Analysis (MSPCA) was used to denoise each component and reconstruct the signal. The denoising performance of the proposed AVMDR method was validated and compared using both simulated signals—linear stationary and nonlinear non-stationary signals with varying noise levels—and real signals obtained from two cable-stayed model bridges. The results indicate that the AVMDR method outperforms other commonly used methods in terms of denoising performance, achieving optimal scores across all denoising performance evaluation metrics. Moreover, the AVMDR method can effectively retain more structural information while eliminating noise.

At present, the layout plan of cable force sensors for cable-stayed bridges usually selects different specifications of cables and cables with large cable forces or significant stress amplitude changes for monitoring, lacking a scientific method of cable force sensor placement. This study proposes an optimal cable force sensor placement method for long cable-stayed bridges based on sensitivity analysis, aiming to identify the structural damage in cable-stayed bridges. The proposed method is based on the sensitivity analysis of cable force to structural damage, and a genetic algorithm is used to obtain the minimum number and placement position of cable force sensors that required to identify structural damage in cable-stayed bridges. In addition, engineering experience and sensor placement habits are fully considered when determining the initial population and constraint condition of genetic algorithm. The proposed method is applied to the numerical model of the Yuxi River Bridge, and the optimal cable force sensor placement for cable-stayed bridges with the target of damage identification is realized. Moreover, the influence of sensitivity threshold on the optimal placement of sensors is discussed.

To realize the resilience of structure under earthquake and solve the problem of large residual deformation of energy dissipation dampers, a prefabricated self-centering energy dissipation brace assembled with U-shaped steel plates and pre-compressive disc springs (U-SCEB) has been developed. This innovative brace comprises a pre-compressive disc spring self-centering system and a U-shaped steel plate energy dissipation system, assembled in parallel. Compared to previous self-centering energy dissipation braces with combined disc springs, the U-SCEB has better deformation capacity and can be fully assembled on-site, facilitating the replacement of damaged U-plates after an earthquake. The configuration and working principle of the U-SCEB were described, and its restoring force model was established. The self-centering capability of the combined disc springs and the energy dissipation capability of the U-shaped steel plates were investigated by the quasi-static cyclic loading test, and the hysteretic behavior of the U-SCEB was further studied by the quasi-static loading test. Finally, the finite element model of the brace was established, and the influence of different design parameters on the hysteretic performance of the U-SCEB was analyzed. The results show that the configuration of the brace is simple, and the self-centering principle is clear. The brace can be assembled on-site, and the components are replaceable. The restoring force model of the brace presents a typical flag shape. Under the quasi-static cyclic loading, damage to the brace is mainly manifested as plastic damage at the connection between the flat and bent sections of the U-shaped steel plate, and the hysteresis curve exhibits stable energy dissipation, excellent self-centering ability, and significant deformation capacity. To ensure the excellent self-centering capacity of the brace, the pre-compressive force of the disc springs should be larger than or equal to the peak strength of the U-shaped steel plates.

Aiming at the problem of secondary impact caused by mismatching parameters of traditional isolation system with displacement restrictor, firstly, a mechanical model of the quasi-zero stiffness (MMPDQZS) isolation system was established by using the opposed disc spring as the negative stiffness component and the repulsive permanent magnets was used to adjust the nonlinear positive stiffness. The static characteristics of the system were analyzed. Then, the mathematical model of MMPDQZS isolation system was established. The influence law of different damping parameters on the impact isolation performance of MMPDQZS isolation system was analyzed. The impact characteristics were compared and analyzed through simulation and experimental study for without and with equivalent linear displacement restrictors and MMPDQZS limiters. The results show that for any initial clearance, there is an optimal viscous damping ratio that minimizes the system’s buffer coefficient. Smaller initial clearances generally lead to better impact isolation effects. Considering different initial clearance, the damping ratio of power-law fluid damping is 0.02, the velocity correlation index obtains the optimal buffer coefficient within the interval [2.2, 2.3], and the optimal initial clearance is when the clearance is equal to 4 mm. For any initial clearance, the buffer coefficient is proportional to coulomb damping, and smaller initial clearances result in better buffering performance. Compared with the equivalent linear limit isolation system, MMPDQZS limit isolation system can not only effectively limit the relative displacement, but also greatly reduce the buffer coefficient of the system and improve its impact resistance.

The combined seismic isolation bearing is composed of a sliding friction bearing and an elastomeric bearing. The bearing system offers a substantial vertical support capacity, various post-yield stiffness choices, and the ability to separate the bridge’s vertical support system from the horizontal support system. To investigate the seismic performance of the combined seismic isolation bearing system, by way of example of a continuous beam bridge with each continuous unit of (4 × 40) m spans, the OpenSees software was used to model with the conventional spherical steel bearing, full sliding friction bearing and combined seismic isolation bearing support systems to obtain the longitudinal seismic response of the bridges, respectively. The influence of seismic parameters such as sliding friction coefficient and shear stiffness on the seismic performance of the combined seismic isolation bearing was discussed. The results demonstrated that the combined seismic isolation bearing exhibits excellent seismic performance and self-centering ability. The seismic performance of the combined isolation bearing will be affected by the sliding friction coefficient and shear stiffness. By selecting appropriate seismic parameters, the maximum displacement demand of bearings, the residual displacement of bearings, and the seismic response of the piers can be effectively controlled.

A structural system for energy dissipation and shock absorption with displacement amplification damping walls across multiple stories is presented. According to structural characteristics of the cable-bracing displacement amplification damping wall, the deformation and force characteristics of the device were analyzed, and presented theoretical formulations for the cable-type damping wall system’s damping force and energy dissipation. The simplified numerical model was established, the parameters that affect the structural performance indicators were analyzed in detail, the fixed-point theory was used to design the optimal parameters of the cable-type damping system, and the energy-dissipating deformation magnification equation was derived to quantify the degree of damping efficiency. A 30-story concrete frame core tube was analyzed for the seismic time-history analysis, though the vibration absorption efficiency of the three damping wall layout schemes of displacement amplification damping wall installed in single story and cable-bracing displacement amplification damping wall system installed in multi-story were compared, it is found that the cable-bracing displacement amplification damping wall system installed in multi-story has a better shock-absorption effect.

To analyze the seismic response of different forms of long-span arch bridge-track systems, four different forms of arch bridges, namely 112 m basket handle arch bridge, 140 m steel box tied arch bridge, (24+160+24) m tied arch bridge and (52+382+52) m steel box arch bridge, are used as examples. The study revealed the dynamic characteristics of long-span arch bridge-track systems under seismic action and explored the effects of seismic waves, seismic intensity, and traveling wave speed on the seismic response. The results show that the stress envelope of the rail under seismic uniform excitation is antisymmetrically distributed, with the maximum value appearing near the end of the beam and the maximum axial force of the arch rib at the arch foot. There are large differences in the dynamic characteristics of the system under different spectral characteristics of seismic wave excitation. The change in seismic intensity mainly affects the rail stress near the end of the beam, and has less effect on the middle beam section. The traveling wave effect has a significant impact on the seismic response, with a significant increase in the axial force of the arch rib. The maximum stress in the rail increases by 149.2% compared to the seismic uniform excitation, and the longitudinal force in the rail at the middle of the span increases significantly, up to 503.4 MPa. Furthermore, the stress in the rail is greater when the apparent wave speed is smaller. Similarily, the stress on the rail increases as the traveling wave speed decreases. As the traveling wave speed increases, the stress distribution on the rail gradually approaches that of consistent excitation.

At present, the research of asphalt concrete core dam under near-fault ground motion is mostly carried out under the condition of single SV and P wave oblique incidence. In fact, the assumption of single wave oblique incidence is not comprehensive, and the near-fault ground motion should be considered as the case of combined P wave and SV wave oblique incidence. In this paper, the oblique incidence time history of SV wave and P wave in the site was determined based on ground motion inversion, and the deformation and damage of the core wall dam were obtained under the oblique incidence of SV and P wave combination near the fault, and the change law of the damage of the dam body with the horizontal and vertical ground motion intensity index was analyzed. The results show that the ultimate failure probability caused by the vertical near-fault ground motion index is obviously different from that caused by the horizontal direction. When the horizontal ground motion intensity indicators near the fault are selected as S_a(T₁)₁, S_v(T₁)₁, VSI₁ and S_d(T₁)₁, and the vertical ground motion intensity indicators are selected as PGA₂, S_a(T₁)₂, VSI₂ and S_d(T₁)₂, the predicted failure probability of the dam body is moderate. The combined damage analysis method of horizontal and vertical ground motion should be considered when analyzing the vulnerability of core wall dam under near-fault ground motion.

To upgrade the level of rural housing to meet the increasing demand for comfort, safety, environmental protection and energy saving, a light frame structure system housing was proposed and designed. The light frame structure system takes a steel frame as the main structural body and ALC wall panel as the filling wall. A full-scale shaking table test has been carried out to verify its seismic performance and to study the seismic behavior and seismic response law of the light frame structure system under earthquake action on beam-column joints, wall-slab joints, and the building structure. The test results show that the wall panel has not fallen off, the joint connection is intact, and the structure has not collapsed. With the increase of input seismic intensity, both the acceleration amplification factor and relative displacement increase, while the natural frequency of the structure decreases gradually. Throughout the test, the main structural members remain elastic, and the inter-story displacement angle of the structure under a fortification earthquake of 6-degree is less than 1/250. Under the action of rare earthquakes of 7th intensity and 8th intensity, the inter-story displacement angle of the structure exceeds 1/250, but the structural deformation can be reduced by tensioning reinforcement support. The light frame structure system exhibited excellent seismic performance and can be used to improve the level of rural housing in the 6th intensity seismic fortification area. For seismic fortification areas above 6th intensity, the seismic performance can be enhanced by increasing the tension of tie bars.