摘要
针对山区河流港口工程斜坡嵌岩桩双向承载工况,采用有限单元法进行数值模拟,考虑材料与桩岩接触非线性影响,通过单元生死功能,建模过程考虑斜坡嵌岩桩施工与承载等流程,构建斜坡-嵌岩桩三维模型,在斜坡坡度参数变化的情况下,对于不同双向荷载工况,逐级施加竖向与水平荷载,分析斜坡嵌岩桩的双向承载特性。研究阐明了斜坡坡度、竖向荷载和水平荷载等方面对双向承载的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)的影响规律,可为实际工程双向承载斜坡嵌岩桩设计提供技术依据。
Focusing on bidirectional load condition of slope rock-socketed pile in port engineering in mountainous river,a finite element program ABAQUS is selected to simulate the modeling process which includes drilling in rock slope,pouring pile concrete,bearing load condition of pile foundation etc. The nonlinear effects of material and pile-rock contact are considered when three-dimensional models of the slope rock-socketed pile system are developed. The bidirectional bearing characteristics of slope rock-socketed pile are analyzed by changing parameters of slope angle and applying vertical and horizontal load at different levels etc. Research results indicate the influence of slope angle,vertical load and horizontal load on the bearing characteristics（ settlement of pile top,horizontal displacement,bending moment of pile body,position of reverse bending point etc.） of bidirectional loaded slope rock-socketed pile,which can provide technical basis for the design of bidirectional bearing slope rock-socketed pile in actual engineering.
作者
周世良
王永艺
廖冬
ZHOU Shiliang;WANG Yongyi;LIAO Dong(Southwest Water Transport Engineering Research Institute,Chongqing Jiaotong University,Chongqing 400016;School of Civil Engineering,Dalian University of Technology,Dalian,Liaoning 116024,China;Wujiang WaterwayAdministration,Chongqing 408000,China)
出处
《水利与建筑工程学报》
2018年第5期162-167,227,共7页
Journal of Water Resources and Architectural Engineering
基金
宁波市交通运输科技项目(201704)
关键词
山区河流
港口工程
斜坡
嵌岩桩
双向承载
mountain river
port engineering
slope
rock-socketed pile
bidirectional bearing
