摘 要
**省**市青龙王府拟建1#商住楼和2#住宅楼，本设计主要对此基坑边坡进行方案论证选择、设计计算及施工组织设计。拟建建筑场地的东侧现为一边坡，长约120m，开挖后高度为2.0～13.0m，北段采用毛石挡墙进行支挡，整个坡顶分布有大量民房,所以根据场地工程地质条件，作者采用喷锚支护和桩锚支护2种方案论证选型。拟建1#商住楼北侧水平距离约0.8m处，有一栋6层楼的砖混结构的办公楼，南侧有一栋6层楼砖混结构的商住楼，与边坡的最小水平距离约为1.5m，地下室开挖后，基坑（边坡）最大度达到4.2m，所以根据场地工程地质条件，作者采用排桩支护。为了满足此挡土墙和边坡的安全、经济、合理等问题，最终确定采用排桩支护、桩锚支护和放坡支护三种支护方式。本设计对这三种方式进行了详细的设计，对此进行还设计了一整套相应的施工方案，包括施工工艺、支护监测以及施工管理，并最终做了工程的预算书，完成了此工程的设计要求。
关键词：基坑支护；桩锚支护；施工方案；预算
ABSTRACT
Design of Deep Excavation Engineering for City South Building 1# in **
The City South Building 1# that at the below of a retaining wall will be under construction in ** of ** province, this article mainly argues for program selection, design calculations and construction organization design of the Pit Slope.The West and the south side of the proposed construction field exists one "7"-shaped stone retaining wall slope,The length of slope about 100m, height between 6-7m, the depth of the design excavation pit 8.0m.Excavation will affect the stabilization of the bulkhead and the side slope.Therefore,according to the location engineering geology condition,the author will use three kinds of plans,the soil nailed retaining structure, Pile-anchor Structure and Shotcrete-bolt Net Supporting.To make the bulkhead and the side slope security,economical,reasonable,Pile-anchor Structure and Shotcrete-bolt Net Supporting will be finally used. The article has designded the two plans particularly,and designded a whole set of plan of construction,including the craft of construction, the support monitoring as well as the management of construction.At the end,the author has made the project budget finally,and then has completed the requirement of project design.
Key words: deep excavation; Pile-anchor Structure;construction;budget
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