带受力盘TC桩室内模型槽试验研究  

INDOOR MODEL TESTS OF PLASTIC TUDE CAST-IN-PLACE CONCRETE PILE WITH SUPPORTING DISC

作　　者：唐天华 杜传宝 叶飞亚 刘旭[2] 陈龙[2] 

机构地区：[1]上海南汇汇集建设投资有限公司,上海200120 [2]河海大学,南京210098

出　　处：《低温建筑技术》2015年第7期97-99,共3页Low Temperature Architecture Technology

基　　金：浦东新区科技发展基金项目(PKJ2012-C12);上海市城市建设设计研究总院科研项目(带受力盘塑料套管混凝土桩处理上海软基路堤的试验与应用研究)

摘　　要：研究桩周土体回挤固结和套管打设造成桩尖落于软土层对带受力盘TC桩承载力的影响,本文中模型试验基本思路是在模型槽中设置4根不同状态的模型桩并对其承载能力进行对比。通过在桩端埋设土压力计、桩侧粘贴应变片得到模型桩在竖向荷载作用下的沉降变形规律、确定单桩竖向极限承载力、桩端阻力随加载的变化规律、桩侧摩阻力随加载的变化及承载力的时间效应。通过对比分析不同试验桩的试验成果,研究带受力盘TC桩承载力发挥的时效性。In order to study the effect of soil＇s consolidation and extrusion around the pile and pile tip in soft soil caused by sleeve setting to the stress on the bearing capacity of the TC pile with disc,the basic idea in this paper is provided with 4 different model pile setting in the model groove and compared to their carrying capacity. Through soil pressure gauge buried under the pile end and strain gauge next to pile lateral,we can get the settlement deformation law of the model pile under vertical load. We can also determine the time effect of single pile vertical ultimate bearing capacity,pile end resistance changes with the pile side resistance,load with load change and bearing capacity. Through the comparative analysis of the test results of different test of pile,we can get the timeliness of research with stress plate bearing capacity of TC pile.

关 键 词：带受力盘TC桩 模型试验 单桩极限承载力 类侧摩阻力 时效性 

分 类 号：TU473[建筑科学—结构工程]