施工技术
施工技術
시공기술
Construction Technology
2015年
19期
68-73
,共6页
地下工程%基坑%不均衡堆载%围护结构%内力%位移
地下工程%基坑%不均衡堆載%圍護結構%內力%位移
지하공정%기갱%불균형퇴재%위호결구%내력%위이
underground%foundation excavation%unbalanced heaped load%retaining structure%internal force%displacement
为了深入研究基坑底板施工过程中坑边不均衡堆载对基坑围护结构的内力和位移及周边环境的影响，运用岩土有限元软件MIDAS／GTS模拟了不均衡堆载下深基坑开挖过程，从而得到了不均衡堆载条件下基坑围护结构内力、变形及地表沉降的分布规律。计算和分析结果表明：坑边不均衡堆载对基坑围护结构的内力和位移及地表沉降产生了较大影响，尤其是围护结构水平位移及地表沉降，这使得基坑的稳定性处于不利的状态。
為瞭深入研究基坑底闆施工過程中坑邊不均衡堆載對基坑圍護結構的內力和位移及週邊環境的影響，運用巖土有限元軟件MIDAS／GTS模擬瞭不均衡堆載下深基坑開挖過程，從而得到瞭不均衡堆載條件下基坑圍護結構內力、變形及地錶沉降的分佈規律。計算和分析結果錶明：坑邊不均衡堆載對基坑圍護結構的內力和位移及地錶沉降產生瞭較大影響，尤其是圍護結構水平位移及地錶沉降，這使得基坑的穩定性處于不利的狀態。
위료심입연구기갱저판시공과정중갱변불균형퇴재대기갱위호결구적내력화위이급주변배경적영향，운용암토유한원연건MIDAS／GTS모의료불균형퇴재하심기갱개알과정，종이득도료불균형퇴재조건하기갱위호결구내력、변형급지표침강적분포규률。계산화분석결과표명：갱변불균형퇴재대기갱위호결구적내력화위이급지표침강산생료교대영향，우기시위호결구수평위이급지표침강，저사득기갱적은정성처우불리적상태。
In order to research the influence of internal force of retaining structures, the deformation and the surrounding environment under the excavation side loading, during construction of foundation excavation bottom, MIDAS/GTS was used to simulate the unbalanced heaped load under deep excavation process, which obtained internal force of retaining structure, deformation and subsidence. The results show that building envelop and surrounding environment under the excavation side loading has a larger influence, especially the horizontal displacement of retaining structure and the settlement of ground, which makes the foundation excavation in unfavorable state.
