长短桩复合地基桩土荷载分担比的试验探究  

Experimental evaluation of pile-soil load sharing ratio for composite foundation with long and short piles

作　　者：李鹏飞 梁仁旺[1] 蔡璟珞 LI Pengfei;LIANG Renwang;CAI Jingluo(College of Architecture and Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China;Architectural Engineering College, North China Institute of Science and Technology, Langfang, Hebei 065000, China)

机构地区：[1]太原理工大学建筑与土木工程学院,太原030024 [2]华北科技学院建筑工程学院,河北廊坊065000

出　　处：《中国科技论文》2018年第13期1467-1470,共4页China Sciencepaper

基　　金：国家自然科学基金资助项目(51178185)

摘　　要：以长短桩复合地基处理工程为原型,进行了"五长四短"的长短桩复合地基室内模拟试验,分别探究了改变长桩桩长、桩径、桩距对长短桩复合地基桩土荷载分担比的影响。结果表明,当增大长桩桩长,桩径以及适当减小桩间距时,桩承担荷载的比例会增大,同时也能够使桩较早的发挥承担更多荷载的作用,而桩间土承担的荷载比例在减小。Based on the composite foundation of long and short pile,the indoor simulate experiment on composite foundation with long and short pile was performed to investigate the influence of pile length,pile diameter and pile spacing on the load sharing ratio.With increase of the length of long pile and pile diameter and the reduction of the pile spacing,the proportion of the pile bearing load will be increased.Meanwhile,it will also enable the pile to carry more loads in the early stage with the decrease of the proportion of load of the soil between the piles decrease.

关 键 词：长短桩复合地基 荷载分担比 长桩桩长 桩径 桩距 

分 类 号：TU473[建筑科学—结构工程]