论文部分内容阅读
为了讨论大体积混凝土结构中大多数由温度变化引起的裂缝的稳定性，给出了无限平板中作用有稳定点热源的位移场、应力场基本解，构造出以边界虚拟力为基本未知量求解混合边界多裂隙体热断裂问题的基本方程。数值计算表明该方法求解多裂隙体热断裂问题精度高，计算工作量少。对含边界裂缝的平板、含三条平行裂缝的平板和含有三条三角形分布的裂缝的平板在稳定温度荷载作用下进行了实验和计算互校，两者结果吻合良好。
In order to discuss the stability of most cracks in mass concrete structures caused by temperature changes, the basic solutions of displacement field and stress field of stable heat source in an infinite plate are given, and the solution to the basic unknowns of the boundary virtual force Basic Equations of Thermal Fracture in Multi - Crater with Mixed Boundary. Numerical calculation shows that this method can solve the problem of thermal fracture in multi-fracture body with high precision and less calculation work. For the plate with boundary crack, the plate with three parallel cracks and the plate with three triangular cracks are tested and calculated with each other under steady temperature load. The results agree well with each other.