混凝土高坝仿真计算的并层坝块接缝单元

Joint Elements in Mixed-Layer Method for Stress Analysis Simulating Construction Process of High Concrete Dams

混凝土高坝往往有一二百层，仿真应力分析的计算量十分庞大。笔者提出的并层算法使计算得到极大简化，但当坝内纵横接缝较多时，并层的效果有所降低。本文提出一种特殊的接缝单元，使各坝块可独立进行并层，互不影响，有效地解决了设有纵横接缝的混凝土高坝的仿真应力分析问题。

As there are 100-200 layers. in a high concrete dam, it is difficult to compute the stresses in the dam simulating the process of construction. The computation is simplified remarkably by the writer's mixed-layer method in ref[1]. But the degree of simplification is reduced when there are many longitudinal and transverse joints in the dam. Special 2D and 3D joint elements for stress field and temperature field are proposed in this paper. After introduction of these joint elements, the layers of construction may be combined independently in each block of the dam. Thus the computation of stresses and temperatures simulating construction process in high concrete dams with longitudinal and transverse joints is simplified a great deal.