根式基础水平承载力的弹塑性有限元分析  

Elastic-plastic FEA for Horizontal Bearing Capacity of Rootstalk Foundation

作　　者：周广腾[1] 方诗圣[1] 李贺才[2] 

机构地区：[1]合肥工业大学土木与水利工程学院,合肥230009 [2]安徽省高等级公路工程监理有限公司,合肥230022

出　　处：《路基工程》2014年第6期140-144,共5页Subgrade Engineering

摘　　要：采用弹塑性有限元法,对某公路长江大桥的根式基础原位试验进行数值模拟,通过改变根式基础的结构布置,分析了根式基础的受力特性,探讨了根键排列形式、根键数量、根键布置位置等因素对根式基础承载力的影响。研究证明,在施工工艺允许的前提下,调整根键布置位置是提高根式基础水平抗推承载力的有效措施。By elastic-plastic FEM, numerical simulation was carried out in relation to the in-situ test for the rootstalk foundation of Yangtze River Bridge on a highway. Through changing the foundation＇s structural arrangement, its mechanical characteristics were analyzed with the influence of the root studs＇ alignment, umber, arrangement and other factors on the root foundation＇s bearing capacity discussed. This study has proved that the root studs＇ arrangement may be adjusted to enhance the root foundation＇s horizontal anti-thrust bearing capacity.

关 键 词：根式基础 弹塑性有限元法 水平承载力 

分 类 号：TU413.1[建筑科学—岩土工程]