摘要
针对现行的《公路桥涵地基与基础设计规范》在横向受荷桩计算分析中无法对地基分层、桩侧土地基比例系数变化或桩身抗弯刚度变化直接解答等缺点,将传递矩阵法引入横向受荷桩的结构计算分析中.根据线弹性地基反力法的基本原理,将桩划分为若干单元并将其简化为多点弹簧支承的连续梁,利用材料力学的知识求得结点之间状态向量的传递关系及桩的总体传递矩阵;根据桩底边界条件,求得桩顶的初始状态向量.通过实例分析与其他计算方法比较,结果表明该法可有效地解决现行规范计算方法存在的不足之处.
The current Code for Design of Ground Base and Foundation of Highway Bridges and Culverts has weakness in the calculation and analysis of laterally loaded piles, direct solutions cannot be gained for multilayer foundation, changes in proportional coefficients of ground base a- round piles or flexural rigidity of piles. Therefore,transfer matrix method is introduced to overcome defects as aforesaid. Piles are divided into units and simplified as a continuous beam supported by multipoint springs based on the principle of linear elastic foundation reaction method. Knowledge on material mechanics is employed to obtain the transitive relations of state vectors between nodes and the general transfer matrix of piles,and then the initial state vector at the top of pile is obtained pur- suant to boundary conditions at pile bottom. It turns out that this method can effectively make up the deficiency in the corresponding calculation method in the Code through analysis of an example and comparison with other calculation methods.
出处
《内蒙古大学学报（自然科学版）》
CAS
CSCD
北大核心
2013年第5期552-555,共4页
Journal of Inner Mongolia University：Natural Science Edition
基金
内蒙古自治区交通厅交通科技项目(NJ-2012-10)
内蒙古大学高层次人才引进项目(IMU-2012-26)
内蒙古高等学校科学技术研究项目(NJZY13018)
关键词
横向受荷桩
线弹性地基反力法
传递矩阵法
状态向量
lateral loaded pile
linear elastic foundation reaction method
transfer matrix method
state vector
