圆形闭合地下连续墙基础的竖向承载性能研究  

Study on vertical bearing behavior of circular closed diaphragm wall foundation

作　　者：党伟华 Dang Wei-hua(China Railway 16th Bureau Group Urban Construction Development Co.Ltd,Beijing 100018,China)

机构地区：[1]中铁十六局集团城市建设发展有限公司,北京100018

出　　处：《工程抗震与加固改造》2023年第3期111-117,共7页Earthquake Resistant Engineering and Retrofitting

摘　　要：使用有限元软件模拟了圆形截面的闭合地下连续墙基础在竖向均布荷载作用下的受力状况,分析和研究了内、外侧摩阻力,端阻力以及承台土反力的形成以及发展过程;进而解释了圆形闭合墙基础在竖向荷载下的承载性能。由模拟分析可知,圆形闭合地下连续墙基础的承载性能中,内、外侧摩阻力和端阻力起主要承载作用,随着荷载的增加,端阻力承载的荷载比例逐渐增大,内外侧摩阻力承载的荷载比例逐渐减少,承台土反力承担的荷载比例从始至终很小,起微弱的承载作用。The finite element software is used to simulate the stress state of the closed diaphragm wall foundation with circular section under the vertical uniformly distributed load,the formation and development process of the internal and external friction,end resistance and soil core reaction are analyzed and studied,and then the bearing performance of the closed diaphragm wall foundation under the vertical load is explained.According to the simulation analysis,in the bearing performance of circular closed diaphragm wall foundation,the internal and external friction and end resistance play the main bearing role.With the increase of load,the load proportion of end resistance increases gradually,the load proportion of internal and external friction decreases gradually,and the load proportion of soil core reaction is very small from beginning to end,and plays a weak bearing role.

关 键 词：圆形闭合地下连续墙基础 ABAQUS 竖向均布荷载 承载性能 

分 类 号：TU476.3[建筑科学—结构工程]