摘要
为研究贵州地区中风化泥岩嵌岩桩的承载性能,以贵州某建筑工程为例,阐述工程地质条件及现场4根试桩的现场静载荷试验情况。采用自平衡静载荷试验,分析了桩身轴力、桩侧摩阻力和桩端阻力随荷载的变化规律以及它们对极限抗压承载力的影响,确定该建筑场区建筑基桩(人工挖孔桩)中风化泥岩层极限侧阻力标准值及极限端阻力标准值。计算结果表明:中风化泥岩层桩侧极限阻力标准值和极限端阻力标准值均满足实际工程的设计要求,研究结果可为贵州省内类似工程提供参考。
In order to study the bearing capacity of moderately weathered mudstone rock-socketed piles in Guizhou,taking a construction project in Guizhou as an example,the engineering geological conditions and the static load tests of four test piles on site are described.Based on the self-balancing static load test,the variation law of pile shaft force,pile lateral friction resistance and pile tip resistance with load and their influence on ultimate compressive bearing capacity are analyzed,and the standard value of ultimate lateral resistance and ultimate end resistance of weathered mudstone layer in building foundation pile(manually excavated pile)in this construction site are determined.The calculation results show that the standard value of the pile lateral ultimate resistance and the standard value of the pile end ultimate resistance meet the design requirements of practical projects,and the research results can provide reference for similar projects in Guizhou province.
作者
蔡行
黄质宏
穆锐
肖丽娜
刘玖虹
CAI Hang;HUANG Zhihong;MU Rui;XIAO Lina;LIU Jiuhong(College of Civil Engineering,Guizhou University,Guiyang 550025,China;Department of Military Facilities,Army Logistics University of PLA,Chongqing 401331,China;Guizhou XinRuiDa Technology Co.,Ltd.,Guiyang 550014,China)
出处
《贵州大学学报（自然科学版）》
2020年第5期102-107,113,共7页
Journal of Guizhou University:Natural Sciences
基金
贵州省科学技术基金资助项目(黔科合LH字[2015]7085号)
贵州省土木工程一流学科建设资助项目(QYNYL[2017]0013)。
关键词
基桩
泥岩
自平衡试验
静载荷试验
foundation pile
mudstone
self-balancing test
static load test
作者简介
蔡行(1994-),男,在读硕士,研究方向:岩土工程,Email:1941892794@qq.com;通讯作者:黄质宏,Email:854584164@qq.com.
