超大型半地下污水处理厂基坑设计与分析

Design and Analysis on Foundation Pit of Ultra-large Semi-underground Wastewater Treatment Plant

摘要:

以上海市某半地下式污水处理厂超大基坑为例，分析了此类基坑设计的特点与难点，详细介绍了基坑围护结构选型，基坑设计方案，包括围护桩（墙）选型，支撑选型，分区实施等措施，并分析了该工程基坑设计的关键技术，可供今后软土地区类似深大基坑设计借鉴和参考。

Abstract:

Taking the ultra-large foundation pit of a semi-underground wastewater treatment plant (WWTP) in Shanghai as an example, the characteristics and difficulties in the design of this kind of foundation pit are discussed. The selection of support structure and the design scheme of foundation pit including the selection of retaining pile (wall) and support system, and the implementation by zones and the other measures are introduced in detail. The key technologies in the design of this engineering foundation pit are analyzed. These references can be provided for the design of the similar deep and large foundation pits in the soft soil areas in the future.