摘要
以广州某深基坑支护工程为例,根据工程概况及基坑加深后的工程特点,在充分利用已施工的支护结构的基础上,选择灌注桩+内支撑+锚索的组合支护结构作为该基坑加深后的支护方案,通过合理地布设多道内支撑和锚索,减少已施工支护结构所受内力以满足其强度要求,最终满足基坑的稳定性要求和确保基坑周边环境的安全。实践表明加深后基坑方案取得了良好的效果,同时实现了经济效益最大化,可为类似工程提供参考借鉴。
Taking a deep foundation pit supporting project in Guangzhou as an example, according to the general situation of the project and the engineering characteristics after the deepening of the foundation pit, the combination of the pouring pile + inner support + anchor cable is selected on the basis of making full use of the constructed supporting structure as a supporting scheme for deepening the foundation pit. By reasonably arranging multiple inner supports and anchor cables, the internal force of the constructed supporting structure will reduces so as to meet the strength requirement, and finally satisfies the stability requirements of the foundation pit and ensures the safety envi - ronment around the pit. The application has shown that the scheme of foundation pit deepening has achieved good results, while at the same time achieving maximum economic benefits, which can provide reference for similar projects.
作者
韩映忠
HAN Ying-zhong(Guangzhou Testing Centre of Construction Quality and Safety Co.,Ltd., Guangzhou 510440)
出处
《广州建筑》
2018年第5期3-6,共4页
GUANGZHOU ARCHITECTURE
关键词
旧基坑加深
支护结构
设计
监测
deepening of old foundation pit
supporting structure
design
monitoring
