水工隧洞素混凝土衬砌开裂过程弹性分析  

Elastic Analysis of Hydraulic Tunnel Plain Concrete Lining during the Process of Crack

作　　者：刘建强[1] 张秀芳[1] 

机构地区：[1]大连理工大学土木水利学院,辽宁大连116024

出　　处：《水电能源科学》2009年第3期87-90,共4页Water Resources and Power

基　　金：国家自然科学基金资助重点项目(50438010);国家重点基础研究发展规划基金资助项目(2002CB412709)

摘　　要：根据弹性力学理论推导了水工有压隧洞素混凝土衬砌开裂时内水压力公式,给出了开裂半径与内水压力关系式,分析了素混凝土衬砌在不同开裂阶段时的结构应力。由计算结果发现,一旦开裂裂缝就会很快贯穿衬砌,裂缝贯穿衬砌前内水压力主要由衬砌承担。The formulae of the water pressure are deduced when the plain concrete lining of hydraulic pressure tunnel structure is cracking, and the relationship between internal water pressure and cracking radius is present. The stress analysis is also calculated during the process of plain concrete lining crack development. The results indicate that once cracking happens, cracks will go through the lining very quickly and the water pressure is mainly balanced by the contribution provided by concrete lining before cracks go through the lining.

关 键 词：有压隧洞 素混凝土衬砌 内水压力 开裂半径 

分 类 号：TV311[水利工程—水工结构工程]