摘要
结合太原市煤气化城郊森林公园水源工程左岸公路仰斜式锚杆挡土墙结构设计方案,采用ANSYS软件生死单元模拟施工完建及浸水作用下的挡土墙—锚杆—土体—地基联合变形协调发展过程,并建立非线性分析模型,对挡土墙位移及内力、土压力和锚杆拉力进行分析。结果表明,土压力增大系数为1.94;挡土墙x方向应力在锚杆作用位置处为拉应力且沿作用点向四周逐渐减小,大致呈圆环状分布;挡土墙水平位移沿墙高分布呈抛物线状,沿墙长呈对称分布,且在同一高度最小位移出现在锚杆所在位置断面;锚杆轴力随杆长的分布呈"枣核"状。可为工程设计最优方案的选择提供参考依据。
Combined with the structural design of inclined-type anchor rod retaining wall of left bank road in water source project for Taiyuan coal gasification suburban forest park,life and death element in ANSYS software was used to simulate coordination deformation development process of retaining wall-anchor-soil-foundation under the construction of building and the flooding effect.And then nonlinear analysis model was established to analyze the displacement and internal forces of the retaining wall,anchor tension and earth pressure distribution.The results show that increasing coefficient of earth pressure is 1.94;xdirection stress of retaining wall at the location of anchor role is tensile stress and it decreases from the point of action to the around,which roughly appears circular ring distribution;horizontal displacement of the retaining wall along the wall height distribution is＂parabolic＂shape,along the wall length distribution is symmetric;moreover,the minimum displacement appears the location of anchor section under the same height;the distribution of anchor axial force with the rod length is＂pit＂shape.Therefore,it provides reference for choosing optimal scheme of engineering design.
出处
《水电能源科学》
北大核心
2014年第9期103-106,共4页
Water Resources and Power
关键词
锚杆式挡土墙
护坡
粘聚力
有限元
剪力
弯矩
anchor rod retaining wall
slope protection
cohesion
finite element
shear
moment
