预应力鱼腹梁在深基坑支护变更方案中的应用

On application of assembled pre-stressed lenticular beam structure to the changed programs of deep foundation pits

以南昌中金国际广场地下室基坑支护工程为例,针对施工过程中的问题,结合基坑实际地质情况和周边环境影响因素,从结构安全、成本控制、施工便利等方面分析比选了变更方案,最终采用了满足安全要求、经济性良好的预应力鱼腹梁支护方案。

Taking the foundation pit support project of the basement of Zhongjin International Square of Nanchang City as the example, the paper combines the geological status of the foundation pit and the affecting factors in the surrounding environment according to the problems in the con-struction ,and undertakes the analysis and comparison of the changed scheme from the structural safety, cost control, and construction conven-ience ,and adopts the assembled pre-stressed lenticular beam structure which can meet the safety demands and has better economical feature.