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Subway crossed soft soil super-large foundation pit co-construction supporting structure and method
The supporting structure and method for co-construction of the metro crossed soft soil super-large foundation pit aim at solving the problems that according to an existing construction method of a metro crossed soft soil super-large foundation pit co-construction project, the construction speed is affected, and the foundation pit construction risk is increased. The structure comprises a shallow area underground diaphragm wall arranged on the oversized foundation pit in a surrounding mode, ultra-deep area underground diaphragm walls on the two sides of an ultra-deep area, an ultra-deep area foundation bottom plate located at the bottom of the ultra-deep area, deep area underground diaphragm walls on the two sides of the deep area and a deep area underground diaphragm wall located at the bottom of the deep area. The shallow-area foundation bottom plates are in lap joint with the tops of the ultra-deep-area underground diaphragm walls and the tops of the deep-area underground diaphragm walls respectively, the engineering piles are supported at the bottoms of the shallow-area foundation bottom plates and the bottoms of the deep-area foundation bottom plates, and the basement structure columns are arranged between the shallow-area foundation bottom plates and the basement top plate. The method comprises the following steps: firstly constructing underground diaphragm walls and inner supports of an ultra-deep area and a deep area, and synchronously constructing a shallow area foundation bottom plate in a zoning and blocking manner, so that the shallow area foundation bottom plate is connected with the underground diaphragm walls of all the areas into a whole;
本发明的一种地铁交叉软土超大基坑共建支护结构及方法，针对现有地铁交叉软土超大基坑共建工程的施工方法，影响了施工速度，增加了基坑施工风险的问题。它包括围合设置于超大基坑的浅区地下连续墙，超深区两侧的超深区地下连续墙，位于超深区底部的超深区基础底板，深区两侧的深区地下连续墙，位于深区底部的深区地下连续墙，分别与超深区和深区地下连续墙顶部搭接的浅区基础底板，支撑于浅区和深区基础底板底部的工程桩，以及浅区基础底板和地下室顶板之间的地下室结构柱。方法：先施工超深区和深区的地下连续墙和内支撑，并同步分区分块施工浅区基础底板，使得浅区基础底板与各区地下连续墙连接为一体。
Subway crossed soft soil super-large foundation pit co-construction supporting structure and method
The supporting structure and method for co-construction of the metro crossed soft soil super-large foundation pit aim at solving the problems that according to an existing construction method of a metro crossed soft soil super-large foundation pit co-construction project, the construction speed is affected, and the foundation pit construction risk is increased. The structure comprises a shallow area underground diaphragm wall arranged on the oversized foundation pit in a surrounding mode, ultra-deep area underground diaphragm walls on the two sides of an ultra-deep area, an ultra-deep area foundation bottom plate located at the bottom of the ultra-deep area, deep area underground diaphragm walls on the two sides of the deep area and a deep area underground diaphragm wall located at the bottom of the deep area. The shallow-area foundation bottom plates are in lap joint with the tops of the ultra-deep-area underground diaphragm walls and the tops of the deep-area underground diaphragm walls respectively, the engineering piles are supported at the bottoms of the shallow-area foundation bottom plates and the bottoms of the deep-area foundation bottom plates, and the basement structure columns are arranged between the shallow-area foundation bottom plates and the basement top plate. The method comprises the following steps: firstly constructing underground diaphragm walls and inner supports of an ultra-deep area and a deep area, and synchronously constructing a shallow area foundation bottom plate in a zoning and blocking manner, so that the shallow area foundation bottom plate is connected with the underground diaphragm walls of all the areas into a whole;
本发明的一种地铁交叉软土超大基坑共建支护结构及方法，针对现有地铁交叉软土超大基坑共建工程的施工方法，影响了施工速度，增加了基坑施工风险的问题。它包括围合设置于超大基坑的浅区地下连续墙，超深区两侧的超深区地下连续墙，位于超深区底部的超深区基础底板，深区两侧的深区地下连续墙，位于深区底部的深区地下连续墙，分别与超深区和深区地下连续墙顶部搭接的浅区基础底板，支撑于浅区和深区基础底板底部的工程桩，以及浅区基础底板和地下室顶板之间的地下室结构柱。方法：先施工超深区和深区的地下连续墙和内支撑，并同步分区分块施工浅区基础底板，使得浅区基础底板与各区地下连续墙连接为一体。
Subway crossed soft soil super-large foundation pit co-construction supporting structure and method
地铁交叉软土超大基坑共建支护结构及方法
XU LEI (author) / CHEN YANZI (author) / ZHAO JIAN (author) / CHEN JIARU (author)
2024-01-16
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
| European Patent Office | 2020
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