深基坑開挖降水對支護(hù)結(jié)構(gòu)穩(wěn)定性影響的研究.pdf

1、青島海洋大學(xué)碩士學(xué)位論文深基坑開挖降水對支護(hù)結(jié)構(gòu)穩(wěn)定性影響的研究姓名：孫淑賢申請學(xué)位級(jí)別：碩士專業(yè)：環(huán)境工程指導(dǎo)教師：沈渭銓2000.6.1ABSTRACTThechangesinsoilbehavior，thenaturalstateofgroundwaterandtheeffectivestressofSOilarecausedbyfoundationPitexcavationandwaterpumpingThesechangesa

2、ffectlateralearthpressurewhichactSonbracedStructureThechangedSituationsoflateralearthpressurecausedbygroundwaterseepage，thechangeofstrengthparameterandthechangeoffreewatersurfacearestudiedinthiSpaperMethodstocalculateact

3、ireandpassiveearthpressurebyusingshearstrengthindicesdeterminedbydifferentshearstrengthtestSsuchaslateralstressdecreasetestanddecompressiontestareproposedWhenthereiSgroundwaterseepageindeepfoundationPit，theeffectofseepag

4、eforceonlateralearthpressuremustbeconsideredThewaystocalculateearthpressureandgroundwaterpressureundertheinfluenceofgroundwaterseepagearealSOgiveninthiSpaper’Thesollnatureoffoundationbase，theembeddeddepthofwater—tightscr

5、eenandwaterpumpingandrecharginglayeraffectthegroundwaterseepagearounddeepfoundationpitBasedonthecharacteristiCSofthegroundwaterseepagearoundthewatertightscreeninfoundationpit，theeasyoccurrenceareasoftheseepagefailureinfo

6、undationpithavebeenindicatedFinally，theauthorhasproposedtheappropriatemeasurestocontroltheseepagefailure，andthecalculatingmethodtodefinetheembeddeddepthofwater—tightscreenbasedonthesafetyfactorofflowingsandhasbeenpropose