Ⅱ型地下连续墙接头力学性能的简易计算方法  

Simplified calculation method for mechanical performance of type Ⅱ joint of diaphragm wall

作　　者：金晓飞[1] 张玉良[1] 梁书亭[1] 朱筱俊[2] 

机构地区：[1]东南大学土木工程学院,南京210096 [2]东南大学建筑设计研究院有限公司,南京210096

出　　处：《东南大学学报（自然科学版）》2015年第5期929-934,共6页Journal of Southeast University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51208181);"十二五"国家科技支撑计划资助项目(2011BAJ10B08);江苏省"333高层次人才工程"资助项目(1105000207)

摘　　要：运用等值梁法对Ⅱ型地下连续墙接头在施工阶段的受力和变形进行理论分析,并给出了Ⅱ型接头施工过程中内力和变形的计算公式.利用得到的计算方法,计算实际工程中Ⅱ型地下连续墙接头的内力及变形,并通过建立三维非线性有限元模型验证了该计算方法的正确性,分析了上端2种不同约束形式对接头力学性能的影响.分析表明,上端刚接约束比铰接约束接头的内力分布均匀,最大变形小.该方法可为以后该类接头初步预测及检查设计提供参考.By using equivalent beam method,the force and deformation of a type Ⅱ joint of diaphram wall in the construction stage are theoretically analyzed,and a simplified calculation method of the forces and deformation of a type Ⅱ joint is proposed based on the analysis of the construction sequences of joint.Using the calculation method,the force and deformation of a type Ⅱ joint in the practical project are calculated,and the proposed method is verified through the three-dimensional nonlinear finite element method.Then,the effect of two kinds of tupper end constraints on the joint mechanical properties is analyzed.The results show that the rigid constraint can improve the stress state of joint,and make the maximum deformation of joint smaller than simple support.The proposed method can be used to preliminarily predict and check the final results of design.

关 键 词：Ⅱ型接头 力学性能分析 简易计算方法 施工过程模拟 

分 类 号：TU473[建筑科学—结构工程]