单 位：
广州珠江黄埔大桥建设有限公司;山东交通学院;西南林学院
关键词：
悬索桥;锚碇基坑;嵌岩地下连续墙;有限元法;拱效应
摘 要：
针对珠江黄埔大桥南汊悬索桥锚碇基坑支护的工程特点,利用有限元法对其施工过程进行了仿真分析,并与现场监测结果进行对比.结果表明:圆形嵌岩地下连续墙的拱效应显著,能够有效减小墙体竖向应力、侧向位移以及墙后地面沉降;墙体侧向位移和坑底隆起量随开挖深度增大迅速增加并逐渐趋于平缓;基岩的嵌固作用对墙体的变形和受力特性也有显著影响.结论可以为今后类似工程的设计提供理论依据和实践参考.
译 名：
Force and Deformation Analysis of the Retain Structure for Anchorage Foundation Pit of Huangpu Suspension Bridge over Zhujiang River
作 者：
WANG Kun1,ZHANG Tai-ke2,CHEN Shun-chao31.Shandong Jiaotong University,Jinan 250023,China;2.Guangzhou Zhujiang River Huangpu Bridge Construction Co.,Ltd.,Guangzhou 510080 China;3.Southwest Forestry College,Kunming 650224,China
关键词：
suspension bridge;anchorage foundation pit;rock-socketed underground continuous wall;finite element method;arch effect
摘 要：
Combined with the practical work of anchorage foundation pit of Huangpu South Suspension Bridge over Zhujiang River,a three-dimensional finite element model is constructed to simulate the deep excavation process.The inner force and deformation of the underground continuous wall are analyzed and the calculation results are validated by means of in-situ measurements.The validation indicates that the arch effect of the round deep-and-large rock-socketed underground continuous wall is very significant,which can reduce its vertical stress,lateral displacement and the ground subsidence behind the wall.The lateral displacement of the fender and the swell of pit bottom increase rapidly with the increase in excavation depth at the beginning and then become stable gradually.The fixed effect of the bedrock has a significant effect on the force characteristics and deformation properties of the underground continuous wall.These results provide a theoretical basis and practical reference for similar projects in the future.
