加权残值法在抗滑桩全桩内力计算中的应用  

Application of weighted residual method in whole internal force calculation of anti-slide pile

作　　者：陈昌富[1] 肖淑君[1] 

机构地区：[1]湖南大学土木工程学院,长沙410082

出　　处：《水文地质工程地质》2008年第4期75-79,共5页Hydrogeology & Engineering Geology

基　　金：教育部博士点基金项目(20050532021);交通部西部项目(200631880237)

摘　　要：本文基于加权残值法的原理,采用适应性较广的B样条函数作为试函数,提出了一种计算抗滑桩全桩内力的新方法。与传统方法相比,该法无需分受荷段和锚固段分别计算抗滑桩的内力。同时针对受荷段和锚固段控制微分方程的差异,应用子域最小二乘配点法进行分析求解,并编制了数值分析程序,对两个计算实例进行了分析。结果表明,本方法只需极为稀疏的间隔数即可得到与传统方法和有限差分法吻合很好的结果,且运行时间短,大大提高了计算效率。Based on the principle of weighted residual method, the extensively adapted B-spline function is used as trial function, a new method for stress calculation of anti-slide pile is proposed. The new method can calculate the internal force without dividing the anti-slide pile into loading segment and anchoring segment comparing with traditional method. Because the control differential equation is different for load-bearing section and anchoring section, the subdomain least square collocation method is imposed for analysis and solution, and the numerical analytical procedure is complicated. Two calculation examples are analyzed by the proposed method, it shows that we can obtain results coincidence well comparing with the traditional and finite difference method results using only very sparse interval numbers, and it demands very short time for the calculation, greatly improving the calculation efficiency.

关 键 词：抗滑桩 加权残值法 滑坡 B样条函数 内力 

分 类 号：P642.22[天文地球—工程地质学] TU473.12[天文地球—地质矿产勘探]