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某深基坑支护锚固失效应急抢险对策分析
Analysis of Emergency Response to an Anchor Failure in a Deep Excavation Support Project
【摘要】 结合工程实例,针对某深基坑支护锚索在张拉时出现锚索失效可能导致险情发生这一情况,从工程所处地层、锚索施工质量、设计等因素综合分析了该情况出现的原因,并提出了相应的应急抢险措施,包括基坑回填、锚索加强、降低地下水位等,最终采用了降低地下水位的方案,有效地减少了土体对支基坑壁的侧向压力,化解了险情,在将失效锚索更换之后,较快的完成了基坑部分的施工,将损失降到了最低。说明用的方式来减少土对及坑壁的压力的方法是有效的,也是经济的,但降低地下水的同时可能会造成地基沉降,应该结合具体情况进行沉降验算,以保证周围建筑的安全。在进行设计时,要对其留有足够的安全系数来保障施工安全。研究成果可为类似工程提供参考和借鉴。
【Abstract】 Combined with an engineering case history, a deep excavation support anchor failure may cause potential risks. A comprehensive analysis of the causes from the engineering in formation, anchor construction quality to design and other factors are performed. The corresponding emergency measures, including backfill of excavated area, existing anchor strengthening and lowering the groundwater level, were proposed. The final approach was to unload the excavated area.
【Key words】 Excavation Support; Deep Excavation; Emergency Response; Engineering Case History;
- 【文献出处】 土工基础 ,Soil Engineering and Foundation , 编辑部邮箱 ,2023年04期
- 【分类号】TU753
- 【下载频次】4