摘要
分别通过对浙江区域48条公路隧道衬砌裂缝病害的现场调查和大量裂缝病害实例的统计分析,获得了公路隧道衬砌裂缝的分布特征规律和衬砌开裂的主要影响因素。通过与衬砌原型试验的对比,验证了衬砌开裂扩展有限元分析方法的适用性。在这些研究的基础上,采用扩展有限元研究了衬砌在主要影响因素作用下的裂缝分布规律、裂缝扩展过程、裂缝外观表现形式及发生机制。该研究为衬砌裂缝产生原因的分析提供了借鉴,同时也为隧道衬砌裂缝病害的防治与加固修复打下了基础。
Through the inspection of 48 tunnels in Zhejiang Province and the statistical analysis of numerous cases of lining cracks, the distribution laws and main influencing factors of lining cracks are attained. The applicability of XEFM for lining cracking is proved by the comparison between the numerical analysis and the prototype test. The propagation and distribution laws, appearances and cracking mechanism of cracks under main influencing factors are studied by using XEFM. This research provides reference for deciding the reasons of lining cracks and lay foundation for preventing and repairing lining cracks.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2013年第2期266-275,共10页
Chinese Journal of Geotechnical Engineering
基金
国家重点基础研究发展规划(973)项目(2011CB013800)
长江学者和创新团队发展计划项目(IRT1029)
关键词
衬砌裂缝
分布规律
影响因素
扩展有限元
开裂机制
lining crack
distribution law
influencing factor
extended finite element
cracking mechanism
