多排预应力锚索抗滑桩内力计算有限差分解法  

Finite difference method of internal force calculation of anti-sliding piles with multi-row pre-stressed anchoring cables

作　　者：陈昌富[1] 何勇志[1] 

机构地区：[1]湖南大学岩土工程研究所,湖南长沙410082

出　　处：《中国地质灾害与防治学报》2009年第2期106-110,115,共6页The Chinese Journal of Geological Hazard and Control

基　　金：国家自然科学基金(50878082);高等学校博士学科专项科研基金(20050532021)

摘　　要：文章研究了深路堑高边坡中采用的多排预应力锚索抗滑桩内力计算方法。基于普通抗滑桩内力计算的地基系数法原理,考虑桩身和多排锚索位移的变形协调,提出了其内力计算的有限差分解法。与传统方法相比,该法通过编程计算,可很容易获得锚索拉力、全桩内力和位移值及其分布规律。工程实例计算结果与现场测试结果的对比分析表明,本文提出的方法可行,其计算结果较好反映了锚索桩的实际受力状态和变化规律。This paper discusses a new internal force calculation method of anti-sliding pile with multi-row pre-stressed anchors on the high slope engineering. Based on the principle of foundation coefficient method in calculating the internal force of the ordinary anti-sliding pile, considering the deformation consistence between multi-row anchoring cables and pile body, the finite difference method is presented to calculate its internal force. Comparing with the traditional method, this method is easy to compile a program to calculate the tensile force of anchors, displacement and internal force of the whole pile and it＇ s regularities of distribution. The field testing results and the calculating results are compared by an engineering example, it shows that the calculation results reflect the actual stressful condition of pile, and this calculation method is applied and reliable.

关 键 词：抗滑桩 预应力锚索 高边坡 有限差分法 内力计算 

分 类 号：TU432[建筑科学—岩土工程] TU473[建筑科学—土工工程]