摘要
管片衬砌结构在极端工况施工下易形成初始缺陷及病害。为探究初始缺陷及病害的存在对管片衬砌结构承载性能的影响,通过归纳概括极端工况引起的初始缺陷等问题,分析管片承载性能的影响因素及破坏机制,发现缺陷会削弱管片极限承载力而发生失稳破坏,初始损伤越严重影响管片衬砌结构的非极限承载力性能力度越明显。因此,如何准确定义初始缺陷并探究结构破坏历程是解决影响管片承载性能的关键。
Segment lining structures are prone to initial defects and diseases under extreme working conditions.The study studies the influence of the existence of initial defects and diseases on the bearing performance of segment lin⁃ing structure.By summarizing the initial defects caused by extreme working conditions,the influencing factors and failure mechanism of segment bearing performance are analyzed.It is found that defects weaken the ultimate bearing capacity of the segment and cause instability failure,and the more serious the initial damage is,the more obvious the non-ultimate bearing capacity performance of the segment lining structure.Therefore,how to accurately define the initial defects and explore the structural failure history is the key to solving the problems affecting the bearing perfor⁃mance of the segment.
作者
吴梦琴
丁智
王震
WU Mengqin;DING Zhi;WANG Zhen(College of Civil Engineering,Zhejiang University of Technology,Hangzhou 310023,China;Department of Civil Engineering,Zhejiang University City College,Hangzhou 310015,China)
出处
《低温建筑技术》
2023年第9期58-62,共5页
Low Temperature Architecture Technology
关键词
管片承载性能
初始缺陷
极端工况
结构破坏机制
segment bearing performance
initial defects
extreme operating conditions
structural destruction mechanism
