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某深大基坑支护设计方案选型分析
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Scheme Selection Analysis on Design of a Deep and Large Foundation Pit
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    摘要:

    随着工程建设的大力发展,地下室开挖逐步向深大方向发展,且周边环境条件越来越复杂.就一工程实例,详细进行了深大基坑支护的选型分析.该基坑临近已运营地铁、拟建地铁、大型住宅小区、已有办公大楼、市政道路等,周边环境条件极为复杂;基坑周长约 1 000 m,开挖深度16.0 ~ 20.0 m,属于典型的深大基坑.经多方案综合分析比较,最后确定该基坑采用排桩+内支撑、排桩+锚索、排桩+钢斜撑、喷锚等多种支护型式.并根据现场监测数据、周边环境条件改变等随时调整设计方案,设计配合贯穿整个施工过程.该基坑分块施工,前后工期持续三年,经历两次延期,整个施工过程未发生实质性安全事故,达到了支护效果,可为同类工程建设提供参考.

    Abstract:

    Following the energetical development of engineering construction,basement excavation is developing to deep and large direction, and the surrounding condition is getting more and more complicated. According to an engineering project,deep and large pit scheme analysis is conducted in detail. The foundation pit is adjacent to using metro, proposed metro, large residential district, existing office, municipal road, et al,and the surrounding environment is primary complicated. Foundation pit circumference is even 1000 m,excavating depth is even 16.0 ~ 20.0 m,and it is typical deep and large foundation pit. By multi-scheme comparison, the foundation pit support is picked up,and the scheme includes rowed pile and internal support, rowed pile and anchor, rowed pile and steel inclined brace, et al. The design scheme is adjusted in the whole construction process according to monitoring data and the surrounding condition change. The foundation pit is constructed in block lasting 3 years and leading twice delayed conference. However,there is no substance safety accident in the whole construction process, and the expected effect is achieved. The engineering project can provide reference for similar projects.

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肖淑君?覮,彭卫平.某深大基坑支护设计方案选型分析[J].湖南大学学报:自然科学版,2018,45(S0):190~196

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  • 在线发布日期: 2018-12-29
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