基于有限元内力法的某拱坝加固培厚方案对比分析

随着使用年限的增长，拱坝不断老化并产生各种病险危害．目前，拱坝的加固培厚成为一种普遍采用的措施，其技术和安全性也逐渐受到关注．针对某拱坝培厚加固有2种方案，即在下游面或者上游面培厚加固，采用有限元内力法计算该坝体及其2种培厚方案坝体应力，结果表明在下游面对坝体加固培厚方案更优，为拱坝加固培厚方案的选择提供依据．通过规范等效应力法和试载法对计算结果复核，验证了计算结果的正确性．

Comparative Analysis of Thickening Schemes of An Arch Dam Based on Finite Element Internal Force Method

With the increase of service petiod,gradually aging and various sick of arch dam appeared. Thichen- ing of arch dam has been a widely adopted measure and its technique and safety is receiving more and more at tention. The finite element internal force method is used to calculate and analyse the dam stresses and its two design schemes, i.e. to thichen at the downstream surface and at the upsteam face. Through comparing the dam stress state between the two schemes, it is shown that the scheme of thichening at the downstream sur- face is more fitting to scheme for the dam thi through checking with t engineering application. This can provide the foundation for choosing a reasonable chening. The results show that the finite element internal force method is correct he results of the equivalent stress method and the the multi-cantilever method.