摘要
针对组合荷载下斜坡嵌岩桩承载工况,采用ABAQUS有限元软件,建模过程考虑斜坡钻岩成孔、桩混凝土浇筑、桩基承载等流程及材料和桩岩接触非线性影响,建立了斜坡-嵌岩桩系统三维模型,通过改变斜坡坡度参数及分级施加竖向荷载、水平荷载和弯矩荷载,分析组合荷载下斜坡嵌岩桩承载特性。结果表明:斜坡坡度、竖向荷载、水平荷载和弯矩荷载等因素对组合荷载下斜坡嵌岩桩承载特性(桩顶沉降、水平位移、桩身弯矩和反弯点位置等)有影响规律,其中组合荷载下,没有竖向荷载参与作用的桩体,其反弯点嵌岩深度呈缓增趋势;有竖向荷载参与作用的桩体,其反弯点嵌岩深度呈陡增趋势。
The ABAQUS finite element software was empolyed to simulate combined loading conditions of rock-socketed pile on slopes in port engineering of mountainous rivers.The modeling process included drilling in rock slopes,pouring pile concrete,bearing load condition of pile foundation etc.The nonlinear effects of material and pile-rock contact were evaluated when three-dimensional models of the slope rock-socketed pile system were developed.The combined bearing characteristics of rock-socketed pile on slopes were analyzed by changing parameter of slope angle and applying vertical and horizontal load,bending moment load at different levels etc.The influence of slope angle,vertical load and horizontal load,bending moment load on the bearing characteristics（settlement of pile top,horizontal displacement,bending moment of pile body,position of reverse bending point etc.）of combined loaded rock-socketed pile on slopes were clarified,which can provide technical basis for the design of combined bearing capacity of rock-socketed piles on slopes in actual engineering.
作者
王永艺
周世良
WANG Yongyi;ZHOU Shiliang(School of River and Ocean Engineering, Chongqing J iaotong University, Chongqing 400074, China;Southwest Water Transport Engineering Research Institute, Chongqing Jiaotong University, Chongqing 400016,China)
出处
《中国科技论文》
CAS
北大核心
2018年第7期796-802,共7页
China Sciencepaper
基金
宁波市交通运输科技项目(201704)
关键词
嵌岩桩
山区河流
港口工程
斜坡
组合荷载
承载特性
rock socketed pile
mountain river
port engineering
slope
combined load
bearing characteristics
