复杂条件下某高层建筑深基坑垂直支护技术

Vertical support technologies of the high-rise building deep-foundation under complicated conditions

以西安某高层建筑为例,针对深基坑开挖与支护工程中存在垂直开挖深度大、地质条件及周边环境复杂、降水难度大等技术难点,采用了分层垂直开挖技术,选取了护坡桩+长锚杆+土钉墙的复合支护结构类型,并与施工现场降水相结合,在作业面十分狭小的情况下,很好的解决了工程中遇到的实际问题。

In this paper, a high-rise building in xi＇an as an example, the vertical cut excavation and supporting of deep foundation pit engineer-ing of deep, complex geological conditions and surrounding environment, such as precipitation is difficult technical problems. This project with vertical stratified excavation technology, selects engineering uses the slope protection pile ＋ long anchor ＋ soil nailing wall composite supporting structure type, at the same time combined with precipitation to the construction site, under the narrow working plane, solved the practical prob-lems encountered in engineering.