论文部分内容阅读
为了研究核电工程中双钢板混凝土组合墙体平面内受剪机理以及平面内受剪荷载与应变的对应关系,以7个核电工程中平面内受剪双钢板混凝土组合墙体的试验数据为基础,通过对组合墙体受力的合理简化假设,推导出组合墙在不同受力阶段时的荷载公式和应变公式;并进行有限元模拟与之对比.比较结果显示,计算值和有限元值与试验值吻合较好,但计算值的极限荷载略小于试验测得的极限荷载,到达极限荷载时有限元计算的应变值要小于试验测得的应变.进一步分析表明,有限元分析结果能反映极限荷载时混凝土墙体的裂缝方向,栓钉和拉结筋对平面内受剪时极限荷载有一定的影响,而有限元分析中较难准确模拟出组合结构平面受剪时的边界条件.
In order to study the in-plane shear mechanism and the in-plane shear load and strain relationship of the double-steel plate concrete composite wall in nuclear power engineering, based on the test data of in-plane sheared double steel plate concrete composite wall in seven nuclear power projects, By simplifying the assumption of the force of the composite wall, the load formulas and strain formulae of the composite wall at different loading stages are deduced, and compared with the finite element simulation. The comparison results show that the calculated value and the finite element value and the test The value agrees well, but the calculated limit load is slightly less than the limit load measured by the test. When the ultimate load is reached, the strain calculated by the finite element is smaller than the measured strain. Further analysis shows that the finite element analysis results can reflect the ultimate load. When the crack direction of the concrete wall, studs and pull-reinforced tendons have some influence on the ultimate load when sheared in the plane, it is difficult to accurately simulate the boundary conditions when the combined structure is sheared in the finite element analysis.