盾构衬砌管片接头力学分析及双直线刚度模型研究  

Mechanical analysis of segment joint of shield tunnel and research on bilinear joint stiffness model

作　　者：朱伟[1] 钟小春[1] 秦建设[1] 

机构地区：[1]河海大学岩土工程研究所,南京210098

出　　处：《岩土力学》2006年第12期2154-2158,共5页Rock and Soil Mechanics

摘　　要：盾构管片接头弯曲刚度Kθ是盾构衬砌结构计算中的一个重要参数。根据管片接头构造特征,在传力衬垫和弹性密封橡胶试验资料的基础上,对管片接头进行受力分析,得到管片接头弯曲刚度与接头内力的非线性关系。为了应用方便,建立了实用的管片接头弯曲刚度的双直线模型。该接头刚度模型为梁-弹簧模型法和修正惯用法中的关键参数确定提供了基础,管片的内力计算也更加合理。Segment joint stiffness Kθ is an important parameter for the design of shield tunnel segment. Basing on the test data of load cushion and water-proof plastic, the joint＇s mechanical characteristic has been analyzed and the nonlinear relation between the segment joint stiffness and joint＇s internal force has also been obtained. In order to make convenient application for engineering, the article has established a bilinear joint stiffness model for shield segment joints. Because the model has provided the foundation to determine the key parameters of modified routine method and beam-spring method, calculation of shield tunnel segment becomes more rational.

关 键 词：盾构衬砌 管片接头 接头刚度模型 模式判别 

分 类 号：TU451.4[建筑科学—岩土工程]