宁波国际金融中心二期地下室基坑支护设计及监测分析

Design and Monitoring Analysis on Foundation Excavation Supports for Basement of Ningbo International Finance Centre Phase Ⅱ

宁波国际金融中心二期地下室体量巨大,地下室基础部分结构复杂,周边环境及工程地质条件复杂。结合工程实际情况,介绍了地下室基坑支护工程的优化设计方案。通过对基坑自身特点以及周边环境的细致分析,提出了地下连续墙结合椭圆环内支撑的优化支护方案。现场巡视未发现明显结构开裂现象,基坑监测数据显示基坑本体结构及周边环境均安全可控。

The foundation excavation of Ningbo International Finance Centre Phase II has features of large amount of quantity, complex basement foundation, complex surrounding environment and geological conditions. This paper introduced the optimized design of foundation excavation supports according to actual conditions. Based on a detailed analysis of the characteristics and surrounding environment of the foundation excavation, an optimized supporting design of diaphragm walls combined with elliptical inner supports was presented. The site inspection didn ’ t find significant structural cracking, and the monitoring data showed that the foundation excavation structure and surrounding environment are safe and in designed range.