某湖底隧道主体结构的裂缝分析  

CRACK ANALYSIS OF THE MAIN STRUCTURE OF A TUNNEL UNDER LAKE

作　　者：潘建伍[1] 朱晓霞[2] 

机构地区：[1]南京航空航天大学土木系,南京210016 [2]河北科技大学理学院,石家庄050018

出　　处：《低温建筑技术》2012年第6期105-106,共2页Low Temperature Architecture Technology

基　　金：国家自然科学基金青年基金(51108238);十二五国家科技支撑计划课题(2012BAK24B03)

摘　　要：基于非线性有限元分析,对某湖底隧道主体结构关键区段在土水压力、不均匀沉降、温差等因素作用下的裂缝分布规律进行了研究,指出各区段在土水压力作用下均为带裂缝工作,裂缝分布在顶板跨中底面、外侧墙顶部外侧以及顶板正中顶面等位置,较小的不均匀沉降对各区段的裂缝分布影响不大,温度应力对裂缝分布的影响较大,降温会导致底板出现新的微裂缝。其结果可供类似隧道的设计、施工和管养参考。Based on nonlinear finite tunnel under lake were studied under the settlement, and temperature. Distribution risks was pointed out. The results can be lar tunnels. element analysis, the key sections of the main structure of a action of such factors as soil and water pressure, differential of the cracks was studied. The weak link in the tunnel leakage reference to the design, construction and maintenance of similar tunnels.

关 键 词：隧道 裂缝 非线性有限元分析 

分 类 号：TU746[建筑科学—建筑技术科学]