水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2012年
4期
151-155
,共5页
大型基坑群%施工组织%基坑支护%施工顺序
大型基坑群%施工組織%基坑支護%施工順序
대형기갱군%시공조직%기갱지호%시공순서
large pit group%construction organization%foundation pit supporling%construction sequence
以西宁火车站综合改造工程总体项目大型基坑群为例,综合考虑安全、工期、造价等因素,对该基坑支护设计和施工组织方案进行了多次比选和合理优化;将原方案一桩到底和框架格构梁＋预应力锚索方案优化为上部土钉墙＋下部排桩锚杆联合支护体系,有效地控制了基坑开挖过程中产生的变形,简化了施工工序,有效节约了大量建设资金。
以西寧火車站綜閤改造工程總體項目大型基坑群為例,綜閤攷慮安全、工期、造價等因素,對該基坑支護設計和施工組織方案進行瞭多次比選和閤理優化;將原方案一樁到底和框架格構樑＋預應力錨索方案優化為上部土釘牆＋下部排樁錨桿聯閤支護體繫,有效地控製瞭基坑開挖過程中產生的變形,簡化瞭施工工序,有效節約瞭大量建設資金。
이서저화차참종합개조공정총체항목대형기갱군위례,종합고필안전、공기、조개등인소,대해기갱지호설계화시공조직방안진행료다차비선화합리우화;장원방안일장도저화광가격구량＋예응력묘색방안우화위상부토정장＋하부배장묘간연합지호체계,유효지공제료기갱개알과정중산생적변형,간화료시공공서,유효절약료대량건설자금。
Taking the large foundation pit group in Xining Railway Station＇ s comprehensive renovation project for exam- ple, the supporting design and construction organization scheme of the foundition pit are selected for many times and opti- mized rationally by comprehensively considering the factors as safety, time, cost and so on. The original scheme, with the framework on a pile of prestressed anchor lattice beam, is optimized to a new scheme, which is a combination sup- porting system with the upper soil-nail wall and bottom row-pile. Through the new scheme, the excavation distortion of the foundition pit is controlled effectively, the construction process is simplified, and a lot of construction funds are saved effectively.
