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.
出处
《力学学报》
EI
CSCD
北大核心
1994年第6期679-689,共11页
Chinese Journal of Theoretical and Applied Mechanics
关键词
碾压混凝土
剪切断裂
重力坝
断裂力学
roller compacted concrete,shear fracture model, non-linear distributionstresses,softening stress-displacement stage,shear strength parameters
