Full
Outline
To ensure the safety of ancient buildings during subway shield tunneling, a general technical approach involving initial assessment, reinforcement, construction monitoring, subsequent evaluation, and additional reinforcement has been established. This study built a 1: 3.52 physical model of ancient buildings and conducted shaking table tests to obtain the damping ratio of structures Ansys was used to build a threedimensional model. Using structural and modal analysis for vulnerable structures for strengthening and prevention, this study provides a reference for the followup vibration monitoring and shield construction. The construction parameters were adjusted according to the construction monitoring data in the test area. The results showed that the maximum displacement of the structure was approximately 14.01 mm under static analysis, which verified the validity of the threedimensional model. The basic frequency of the structural model was 0.590 46 Hz and the most vulnerable position was sandalwood. During shield tunneling, the acceleration of ancient buildings was less than 0.003 m/s², the vibration frequency was primarily concentrated at 0.6–20.5 Hz, and the vibration frequency was in the normal range. The paper proposes that the overall solution of subway shield tunneling through the ancient buildings involves a uniform driving speed, avoiding the operation peak period, using the grouting reinforcement between the strata in the affected area, supporting the vulnerable structure of the ancient buildings, and adopting a vibration isolation and vibration reduction scheme during the construction. This provides a reference for similar subsequent projects.
1317
664
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
