碾压混凝土层面的剪切断裂分析  

ANALYSIS OF SHEAR FRACTURE OF ROLLER COMPACTED CONCRETE LAYER

作　　者：沈英[1] 曾昭扬[1] 周立峰 

机构地区：[1]清华大学水利水电工程系

出　　处：《力学学报》1994年第6期679-689,共11页Chinese Journal of Theoretical and Applied Mechanics

摘　　要：提出把碾压混凝土直剪试验与有限元计算相结合的剪切断裂模型，这种模型考虑碾压层面上非均匀分布应力与包含应力－位移软化阶段效应，由此确定的抗剪断强度参数较传统试验值提高约３０％，更为符合实际情况。The shear strength of the compacted layer is one of the important factorsdetermining the stability of the roller compacted concrete dam。Anew shear fracture modelcombining the direct shear test with the finite element calculation is put forward in thispaper. The new model considers the non-linear distribution stresses and includes the effectof the softening stress-displacement stage in the compacted layer.Thust,the shear strengthparameters determined by the aforementioned method are about thirty percent higher thanthe traditional experimental values.The new model more closely reflects the actual situation.

关 键 词：碾压混凝土 剪切断裂 重力坝 断裂力学 

分 类 号：TV642.2[水利工程—水利水电工程] TV313