Article(id=1259474420582761097, tenantId=1146029695717560320, journalId=1259198796492718097, issueId=1259474414219964747, articleNumber=null, orderNo=null, doi=10.15951/j.tmgcxb.24060491, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=null, receivedDateStr=null, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1778211701769, onlineDateStr=2026-05-08, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1778211701769, onlineIssueDateStr=2026-05-08, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1778211701769, creator=13701087609, updateTime=1778211701769, updator=13701087609, issue=Issue{id=1259474414219964747, tenantId=1146029695717560320, journalId=1259198796492718097, year='2026', volume='59', issue='1', pageStart='1', pageEnd='128', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1778211700252, creator=13701087609, updateTime=1778211964781, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1259475523919594262, tenantId=1146029695717560320, journalId=1259198796492718097, issueId=1259474414219964747, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1259475523919594263, tenantId=1146029695717560320, journalId=1259198796492718097, issueId=1259474414219964747, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=115, endPage=128, ext={EN=ArticleExt(id=1259474423770432165, articleId=1259474420582761097, tenantId=1146029695717560320, journalId=1259198796492718097, language=EN, title=Development and verification of subgrade serviceability test system considering the principal stress rotation, columnId=null, journalTitle=China Civil Engineering Journal, columnName=null, runingTitle=null, highlight=null, articleAbstract=A test system for the serviceability of highway subgrade considering the principal stress rotation was developed to accurately simulate the evolution of the three-dimensional stress state and assess the serviceability of the subgrade under traffic loads. The subgrade serviceability test system is composed of the core loading system and the auxiliary modules such as full digital servo control system and data acquisition system. The loading system with four dynamic and three static actuators was designed to achieve the rotation of the principal stress axis in subgrade soil elements at various levels based on the coordination of static and dynamic loading. A theory for three-dimensional dynamic stress recurrence in highway subgrade was developed based on the theoretical model of the subgrade’s dynamic response under traffic load and the loading system’s mechanical and spatial characteristics, and furthermore a method of transforming the “stress spectrum” into the “load spectrum” was proposed. Using the test system, the three-dimensional stress state in the highway subgrade under vehicle load was examined. The results show that the actual output load deviation of each static or dynamic servo actuator is less than 1%, confirming that the developed subgrade serviceability test system can accurately simulate the three-dimensional stress state of the subgrade under traffic loads. The time history curves of each dynamic stress component and the attenuation pattern of vertical dynamic stress closely match the theoretical ones. The vertical dynamic stress in the subgrade gradually decreases with depth, and the stress path experienced by the soil element resembles a “heart shape.” The “seven-cylinder linkage and coordinated loading” method can replicate the dynamic response of soil elements at various depths in the subgrade working area during the “far-near-far” movement of traffic loads, despite the loading device’s position remaining unchanged. Therefore, the subgrade serviceability test system developed in this study introduces a new concept, approach, and technology for investigating the evolution of highway serviceability under actual traffic loads., correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=null), CN=ArticleExt(id=1259474423053206174, articleId=1259474420582761097, tenantId=1146029695717560320, journalId=1259198796492718097, language=CN, title=考虑应力主轴旋转的路基服役性能试验系统研制及验证, columnId=1259474421547451031, journalTitle=土木工程学报, columnName=道路工程, runingTitle=null, highlight=null, articleAbstract=为了精准复现交通荷载作用下公路路基三维应力状态与服役性能演化过程，研制一种考虑应力主轴旋转的公路路 基服役性能试验系统。路基服役性能试验系统主要是以加载系统为核心、全数字伺服控制系统及数据采集系统等辅助模块组成。根据交通荷载作用下路基土单元全应分量（3 个正应力、3 个切应力）的时程特征，设计以 4 个动态作动器及 3 个静态作动器为核心的加载系统，通过静动协同加载来实现不同层位路基土单元的应力主轴旋转效应。基于交通荷载作用下公路路基动力响应理论模型，结合加载系统的机械结构与空间特征，建立公路路基三维动应力复现理论，并提出由“应力谱”到“加载谱”的转化方法。基于该试验系统，开展汽车荷载作用下公路路基内部三维应力状态验证试验。结果表明，各静动伺服作动器的实际输出荷载偏差低于 1%，表明研制的路基服役性能试验系统能够精准复现交通荷载作用下路基内部的三维应力状态；路基内部的竖向动应力沿深度方向逐渐衰减，土单元所经历的应力路径呈近似“心形”，并且各动应力分量时程曲线与竖向动应力衰减规律均与理论计算结果有较高的吻合度。虽然该试验系统的加载装置在加载过程中位置不变，但是依然可以通过“七缸联动、协调加载”的方式复现交通荷载“远-近-远”移动过程中路基工作区不同深度土单元的动力响应。因此，该文研制的路基服役性能试验系统为开展真实应力条件下公路路基服役性能演化规律研究提供新思路、新方法和新技术。, correspAuthors=崔新壮, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=4zo4NDsD6xBdEue+svGE7A==, pdfFileSize=2983315, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=1.山东大学，山东济南 250061;
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