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1、http://www.tahsft.com/http://www.tajthg.cn/讨论地下连续墙施工难点【摘要】地下连续墙技术起源于欧洲,我国在二十世纪五十年代后期开始在水利部门推广应用这项技术。地下连续墙具有刚度大、防渗好、扰动小、环保等优点,但进行地下连续墙施工需要具有较高的技术水平与施工经验且施工难度较大。本文对地下连续墙在施工中的几个难点进行分析。【pickto】undergroundcontinuouswalltechnologyoriginatedinEuropeandinChinainthelate1950sbeganp
2、romotingapplicationofthistechnologyinwaterconservancydepartment.Undergroundcontinuouswallhasgreatstiffness,goodanti-seepage,smalldisturbance,environmentaladvantages,butneedtocarryontheundergroundcontinuouswallconstructionhashighertechnicallevelandtheconstructionexperience
3、andconstructionisdifficult.Inthispaper,theseveraldifficultiesinundergroundcontinuouswallinconstructionareanalyzed. 【关键词】地下连续墙;施工难点;分析;对策【keywords】undergroundcontinuouswall;Constructiondifficulties;Analysis;countermeasures 1前言http://www.tahsft.com/http://www.tajthg.cn
4、/1introduction 地下连续墙技术起源于欧洲,1950年意大利最先在工程中应用,我国在二十世纪五十年代后期开始应用这项技术。地下连续墙是通过专用的挖(冲)槽设备,沿着地下建筑物或构筑物的周边,按预定的位置,开挖出或冲钻出具有一定宽度与深度的沟槽,用泥浆护壁,并在槽内设置具有一定刚度的钢筋笼结构,然后用导管浇灌水下混凝土,分段施工,用特殊方法接头,使之连成地下连学的钢筋混凝土墙体,其主要用于:基坑开挖和地下建筑的临时性和永久性的挡土结构;地下水位以下的截水、防渗;部分工程的墙体还承受上部建筑的永久性荷载兼有挡土墙和承重基础作用;
5、邻近建筑物的支护;具有振动相邻影响的隔振墙等。UndergroundcontinuouswalltechnologyoriginatedinEurope,Italyin1950thefirstintheengineeringapplication,inthelate1950sbegantoapplicationofthistechnologyinourcountry.Undergroundcontinuouswallisthroughadedicatedtodig(rushed)slotdevices,alongthesurroundin
6、gundergroundbuildingsorstructures,accordingtothepredeterminedposition,theexcavationorimpactdrillwitharangeofwidthanddepthofgroove,usingslurrysupporting,andsetuparoundaslothasacertainstiffnessofstructureofreinforcingcage,andthenusecatheterpouringunderwaterconcrete,sectionc
7、onstruction,jointinaparticularway,makeitintoundergroundreinforcedconcretewall,evenlearnitishttp://www.tahsft.com/http://www.tajthg.cn/mainlyusedin:foundationpitexcavationandtheundergroundconstructionofthetemporaryandpermanentsoilretainingstructure;Undergroundwaterlevelbel
8、owthecutoff,seepagecontrol;Partofthewallstillundertheupperconstructionengineeringpermanentloadbo