南水北调与水利科技Issue(1)：136-142,7.DOI:10.13476/j.cnki.nsbdqk.2016.01.023
PH C-钢管组合桩竖向荷载传递机理研究
Investigation of vertical load transfer mechanism for PHC-steel composite pile
摘要
Abstract
PH C-st eel composite pile, w ith corrosion resistance and good penetration properties, has been popularized in high-pile wharf. H owever, there are always some difference of their diameter, modulus of elasticity and densit y betw een PHC pipe pile in the upper part and steel pipe pile in the lower part, and the load transfer of composite pile w as significant ly different in its upper and low er part. T he tradit ional method can not be applied directly to calculate the vertical bearing capacity, thus the load transfer mechanisms w ere not investigat ed. Therefore, t he design of composite pile lacked mechanism basis. Based on geological condi-tions of the Yangt ze River region of Zhenjiang Yangzhong, and considering softening of soil, the cont act charact eristics of pile-soil and great settlement deformat ion, simulation test of vert ical static loading of PH C-st eel composite pile w as conducted by u-sing FLAC3D softw are, then the effect of “ depth of joint” , “ area of joint” on ultimate bearing capacity and the axial force and pile lateral friction resistance were analyzed. The results indicated that t he PH C-steel composite pile w hich driven in Yangtze River region of Zhenjiang Yangzhong is end-bearing frict ion pile; the area and dept h of joint affects the ultimate bearing capacity and sett lement value of unst able pile; t he greater attenuation of axial force occurs in the joint; the pile lat eral f riction resistance changes intricately with increasing depth; the ultimate pile lateral friction resistance occurs in the joint.关键词
PH C-钢管组合桩/FLAC3D软件/静载试验/接桩部位埋深/接桩部位面积/轴力/桩侧摩阻力Key words
PH C- steel composite pile/FLAC3D/vertical static loading test/depth of joint/area of joint/axial force/pile lat eral friction resistance分类
建筑与水利引用本文复制引用
胡骏文,邹玉光,汤雷,王海军,官福海..PH C-钢管组合桩竖向荷载传递机理研究[J].南水北调与水利科技,2016,(1):136-142,7.基金项目
江苏省“333”工程人才项目( Rq415001) （ Rq415001）
江苏省交通运输科技项目(2014T13) （2014T13）
南京水利科学研究院中央级公益性科研院所基本科研业务费专项资金面上项目( Y415002)Fund:"333" Talent Engineering Project of Jiangsu Province ( Rq415001) （ Y415002）
T ransportation science and technology project of Jiangsu Province (2014T 13) （2014T 13）
Nanjing H ydraulic Research Institute Central Public Resear ch Institutes Fundamental Resear ch Funds( General Prog ram, Y415002) （ General Prog ram, Y415002）
