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(1 國家電力公司中南勘測(cè)設(shè)計(jì)研究院  長(zhǎng)沙 410014；2 中南大學(xué)土木建筑學(xué)院  長(zhǎng)沙 410075)
【提要】以廣州地鐵三號(hào)線某車站深基坑支護(hù)工程為背景，采用以開挖深度、支撐位置和圈梁截面為設(shè)計(jì)變量，以支護(hù)樁變形曲線面積為目標(biāo)函數(shù)的設(shè)計(jì)優(yōu)化體系，對(duì)支護(hù)結(jié)構(gòu)設(shè)計(jì)及施工工藝進(jìn)行方案優(yōu)化，采用間隔樁作為深基坑圍護(hù)結(jié)構(gòu)?，F(xiàn)場(chǎng)監(jiān)測(cè)表明，該設(shè)計(jì)體系、支護(hù)方案及施工工藝切實(shí)可行，可供類似工程借鑒。
【關(guān)鍵詞】  深基坑  方案優(yōu)化  設(shè)計(jì)  施工  監(jiān)測(cè)
Plan Optimization of the Design and Construction of Bracing Structure for Deep Excavation/
Luo Jinsheng1,Wei Limin2(1 Midsouth Design and Research Institute for Hydroelectric Projects,Changsha 410014,China;2 Civil Engineering and Architecture College,Central South University,Changsha 410075,China)
Abstract:The deep excavation project by taking the certain subway station in line No.3 of Guangzhou as an example is introduced.The plan of design and construction is optimized.The optimal design parameters are the depth of excavation,the position of bracing and the section areas of the ring beam.The object function is the area of the deformation of the retaining pile.The data of monitoring verifies that the system of optimization,the design plan and the construction technology process are valid and can be used for reference by similar projects.
Keywords:deep excavation;plan optimization;design;construction;monitoring