公路拓宽部位桩基性状的数值分析  

NUMERICAL ANALYSIS FOR PILE FOUNDATION IN EXPRESSWAY WIDENING ENGINEERING

作　　者：张磊[1] 黄金荣[2] 周进华[2] 徐永福[1] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240 [2]泰州市公路管理处,江苏泰州225300

出　　处：《低温建筑技术》2009年第4期97-100,共4页Low Temperature Architecture Technology

摘　　要：面对日益增加的交通流量,增加公路容量迫在眉睫,拓宽原有公路是近年来的热点。新拓宽路基因新路堤自重应力产生不均匀沉降,不均匀沉降会导致路面开裂,减小新拓宽路基不均匀沉降的快捷有效方法是桩基。文中采用ELAC2D办件研究了拓宽路基中不同桩长和桩体模量的复合地基形状,得到了桩长和桩体模量对拓宽路基水平位移、沉降、不均匀沉降的影响规律,指导公路拓宽工程建设。Due to the requirement of increasing traffic, it is very urgent to widen the existing highways in China. The additional stresses will cause differential settlements; the differential settlement may lead to cracks of pavement sections. Pile foundation would be an effective solution to remedy the problem.Two-dimensional finite difference software： FLAC^2D was used to study deformations of the widened embankments over soft soil with Pile. The results of the paper include the vertical and the horizontal displacements, the differential settlements. Suggestions are made for the construction of the widening of embankments.

关 键 词：软土路基 有限差分法 拓宽 不均匀沉降 桩土应力比 

分 类 号：TU473.1[建筑科学—结构工程]