淤泥质地基海堤与水闸连接段沉降控制  

Comparative Study for Silt Mass Foundation Seawall and Lock Connection Section Settlement Control

作　　者：刘建飞[1] 任红侠[1] 吴兵[2] 王汉勋[2] 

机构地区：[1]浙江同济科技职业学院,浙江杭州311231 [2]中国地质大学(北京)工程技术学院,北京100083

出　　处：《人民黄河》2015年第10期99-102,107,共5页Yellow River

基　　金：浙江省重点水利科技项目(RB1505)

摘　　要：淤泥质地基上建造海堤工程时,有效控制地基沉降是决定工程成败的关键,通常情况下海堤与水闸连接部位因地基处理方式的不同会产生较大的差异沉降,进而可能导致这一部位损毁,设置连接段则是控制过大差异沉降的有效工程措施。为了比较连接段不同地基处理模式的工程效果,以浙东沿海某海堤围垦工程为背景,基于有限差分数值模拟软件(FLAC3D)分别模拟了塑料排水板+堆载、水泥搅拌桩穿透软土层、水泥搅拌桩未穿透软土层、高压旋喷桩、碎石桩等5种地基处理措施及海堤堆载过程,并考虑地基沉降过程的流固耦合效应,分别求得5种不同地基处理措施的沉降值。结果表明:采用水泥搅拌桩穿透软土层处理对控制连接段的沉降效果明显,并且地基中应力的分布规律更趋合理。On the silt mass foundation,building the seawall engineering,the effective control of the foundation settlement is the key to decidethe project success or failure,and usually under the different measures of foundation treatment,the sea wall and lock connection section will produce bigger difference settlement. Different connection sections of foundation treatment measures for effect of settlement control are also different from each other. In order to rationally compare the effects of different connection sections of foundation treatment,on the background of a seawall reclamation engineering in eastern Zhejiang coastal and based on the finite difference numerical simulation software( FLAC3D),it simulated 5 foundation treatment measures and seawall heap load process and also considered the fluid- structure coupling effect in the process of the foundation settlement and got settlement values for five different foundation treatment measures. The analysis results show that the cement mixing piles that penetrate soft soil layer can control settlement better and foundation stress distribution rule tend to be more reasonable.

关 键 词：淤泥质地基 海堤连接段 地基处理 数值模拟 流固耦合 

分 类 号：TV871[水利工程—水利水电工程]