(同济大学地下建筑与工程系  上海 200092)
［提要］  推导了由裂缝控制限值反算地下连续墙弯矩的计算方法。结合工程实例就裂缝控制限值取0.2或0.3时对地下连续墙的配筋率、极限弯矩以及荷载短期效应弯矩的影响关系进行了详细的讨论，得出按照裂缝控制限值进行地下连续墙设计，不但可以满足裂缝控制要求与极限承载力要求，而且可以优化配筋率的结论。
［关键词］  地下连续墙  裂缝控制限值  弯矩分析
Bending Moment Analysis of Underground Diaphragm Wall Based on Crack Control Limit Value/Shi Shiyong, Liu Guobin(Department of Geotechnical Engineering, Tongji University, Shanghai 200092，China)
Abstract:An equation to calculate concrete diaphragm wall's bending moment is deduced based on the crack control limit value. Combined with the engineering，the discuss about the effect relationship between the reinforcement ratio,the limit bending moment and the load short term effect bending moment of underground diaphragm wall is made under the crack control limit value equals to 0.2 or 0.3. It is concluded that the crack control, the ultimate bearing capacity requirements and reinforcement ratio optimization can be met using the crack control limit value in underground diaphragm wall design.
Keywords:underground diaphragm wall; crack control limit value; bending moment analysis