基于荷载传递法塑料套管混凝土桩荷载—沉降分析  

Plastic Tube Concrete Pile Loading-Settlement Analysis Based on Load-Transfer Methods

作　　者：丁飞鹏 王新泉[2] 陈龙[3] 应海见 

机构地区：[1]浙江金筑交通建设有限公司,杭州市310051 [2]浙江大学城市学院土木工程系,杭州市310015 [3]河海大学岩土工程科学研究所,南京市210098 [4]浙江交通勘察设计有限公司,杭州市310014

出　　处：《公路》2010年第9期120-124,共5页Highway

基　　金：浙江省交通厅科技计划项目;项目编号2007H03

摘　　要：桩的荷载—沉降曲线是研究桩的受力机理的重要途径之一,通过数值分析方法来研究TC桩荷载传递规律。假定一个典型桩并确定求解所需的基本参数,再对所讨论的参数赋予不同的值进行分析。利用FORTRAN编制的程序求解荷载—沉降曲线、桩身的轴力分布以及摩阻力的发挥。通过与现场试验桩所做静载试验所得Q-s相比可以得出,在桩身质量有保证、土体及时回挤、部分土体抗力已发挥的情况下,在TC桩的应用桩长范围内,无需对TC小直径桩的长细比做出限制。The loading-settlement curve of pile is one of the important ways to research the loading mechanism of pile.Through numerical analysis method the TC pile load-transfer law is studied.A typical pile is assumed and the basic parameters are determined,then the parameters with different values are analyzed.The loading-settlement curve,the distribution of axial force of the pile body and the taking-effect of the friction are solved by FORTRON program.Compared with the static load test Q-s curve got from field test pile the result can be got： If pile quality is guaranteed,soil compressed in time,part of the soil resistance has played,at TC pile length range of application,making restrictions on slenderness ratio of small diameter TC piles is not necessary.

关 键 词：塑料套管桩 混凝土桩 荷载传递 沉降 分析 

分 类 号：TU473.11[建筑科学—结构工程]