摘要
通过对某城市基坑工程围护设计结果进行分析,研究了双排桩不同排距变化对排桩桩桩身内力及支锚轴力的影响规律,以及对基坑周边地表沉降的影响。结果表明,前排桩承受背土侧弯矩与剪力随双排桩排距的增加而增加;后排桩承受的弯矩随排距增加而增加,剪力随之减小;第1道锚索内力随双排桩排距的增加呈先增大后变小的趋势,内力变化较大,第2,3道锚索内力随双排桩排距增加而增加,增加趋势逐渐减小;周边地表沉降最大值随着双排桩排距的增加而先降低后增大,但是周边地表沉降范围不变。
Based on the results of a city foundation excavation enclosure design analysis of double row piles of different row spacing changes on the influence of internal force of pile,and the influence on ground surface settlement around foundation.The results show that the front row piles bear back soil lateral moment and shear with double row pile row distance increases; the moment back pile bear with row spacing increases,the shear force decreases; the first cable with double row of piles row distance was first increased and then decreased,the internal force changed greatly,second and the third anchor force with double row pile row distance increases,the increasing trend gradually decreases; with the increase of maximum value of double row pile row distance and decreases first and then increases settlement of surrounding ground surface,but the surrounding surface subsidence range unchanged.
出处
《施工技术》
CAS
北大核心
2017年第S2期368-371,共4页
Construction Technology
关键词
双排桩
锚索轴力
弯矩
剪力
地表沉降
double row piles
supporting axial force
bending moment
shear
surface subsidence
