Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method and system for foundation pit above existing underground structure
The invention relates to the technical field of building construction, and provides a construction method and system for a foundation pit above an existing underground structure, and the method comprises the following steps: constructing a first row of engineering piles and a second row of engineering piles; soil bodies in the target area are excavated according to a preset excavation sequence, so that the soil bodies in the target area are excavated to the bottom surface of the target foundation pit one by one; a flexible packaging piece is arranged on the bottom face of the first excavated target foundation pit, a fluid medium is injected into the flexible packaging piece, and the ballast face and pressure of the flexible packaging piece on the bottom face of the target foundation pit are synchronously increased along with one-by-one excavation of soil bodies in the target area; the back pressure block is arranged on the flexible packaging piece, and the fluid medium in the flexible packaging piece is discharged; and the back pressure blocks are connected with the first row of engineering piles and the second row of engineering piles to form a portal frame. The replacement of the ballast and the excavation of the soil body are synchronous, so that the micro-disturbance construction is realized, the construction speed of the foundation pit can be accelerated, and the excavation efficiency is ensured.
本申请涉及建筑施工技术领域，提供了既有地下结构上方基坑施工方法及系统，方法包括以下步骤：施工第一排工程桩和第二排工程桩；按照预设开挖顺序开挖目标区域内的土体，使目标区域内的土体被逐一的开挖至目标基坑底面；将柔性包装件设置在第一个被开挖出的目标基坑底面上，向柔性包装件内注入流体介质，使柔性包装件在目标基坑底面上的压载面和压力随着目标区域内的土体的逐一开挖而同步增大；将反压块设置在柔性包装件上，排出柔性包装件内的流体介质；将反压块与第一排工程桩和第二排工程桩连接，形成门式框架。本发明的压载的置换和土体的开挖同步，实现了微扰动施工，可加快基坑施工速度，保证开挖效率。
Construction method and system for foundation pit above existing underground structure
The invention relates to the technical field of building construction, and provides a construction method and system for a foundation pit above an existing underground structure, and the method comprises the following steps: constructing a first row of engineering piles and a second row of engineering piles; soil bodies in the target area are excavated according to a preset excavation sequence, so that the soil bodies in the target area are excavated to the bottom surface of the target foundation pit one by one; a flexible packaging piece is arranged on the bottom face of the first excavated target foundation pit, a fluid medium is injected into the flexible packaging piece, and the ballast face and pressure of the flexible packaging piece on the bottom face of the target foundation pit are synchronously increased along with one-by-one excavation of soil bodies in the target area; the back pressure block is arranged on the flexible packaging piece, and the fluid medium in the flexible packaging piece is discharged; and the back pressure blocks are connected with the first row of engineering piles and the second row of engineering piles to form a portal frame. The replacement of the ballast and the excavation of the soil body are synchronous, so that the micro-disturbance construction is realized, the construction speed of the foundation pit can be accelerated, and the excavation efficiency is ensured.
本申请涉及建筑施工技术领域，提供了既有地下结构上方基坑施工方法及系统，方法包括以下步骤：施工第一排工程桩和第二排工程桩；按照预设开挖顺序开挖目标区域内的土体，使目标区域内的土体被逐一的开挖至目标基坑底面；将柔性包装件设置在第一个被开挖出的目标基坑底面上，向柔性包装件内注入流体介质，使柔性包装件在目标基坑底面上的压载面和压力随着目标区域内的土体的逐一开挖而同步增大；将反压块设置在柔性包装件上，排出柔性包装件内的流体介质；将反压块与第一排工程桩和第二排工程桩连接，形成门式框架。本发明的压载的置换和土体的开挖同步，实现了微扰动施工，可加快基坑施工速度，保证开挖效率。
Construction method and system for foundation pit above existing underground structure
既有地下结构上方基坑施工方法及系统
WAN DAYONG (Autor:in) / ZHANG JIANGXIONG (Autor:in) / YOU WEIJUN (Autor:in) / PENG HUI (Autor:in) / FANG YUAN (Autor:in)
17.01.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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