采用ANSYS程序,建立三维有限元模型,对带挑梁剪力墙结构进行数值模拟计算.深入分析了主体结构剪力墙在强配筋挑梁处局部区域的复杂应力状态,包括混凝土局部区域的应力变化规律及主应力的分布、伸入钢筋的应力分布以及钢筋与混凝土之间的粘结应力的变化规律,同时也详细论述了混凝土中裂缝的分布及开展规律.在此基础上进一步研究了混凝土的局部强度破坏模式,总结归纳出了混凝土的锥形破坏模式,并对该破坏模式的形状通过数值模拟计算进行了参数分析.%3-D finite element model is built by programme ANSYS.for carrying out the value modeling calculation on the shear-wall with cantilever beam. The complicated stress state at local area of shear-wall with strong rebar cantilever beam is analysed,including the stress changing regularity and main stress distribution at the local area of concrete,stress distributing regularity of rebar into shear-wall from contilever beam, changes of bonding stress between concrete and rebar. And the distribution of cracks in concrete is detailed illuminated. Based on these,the local strength failure mode is studied throughly, and the cone failure mode is concluded. At last, the shape of failure cone is preliminary confirmed by valu modeling calculation of relative parameters.
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