A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Pipe gallery foundation pit support construction method
The invention provides a pipe gallery foundation pit support construction method which comprises the following steps: S1, measuring a boundary line of foundation pit excavation, and determining a drilling position of a pile; s2, a guide frame is installed along the boundary line, the uniformity of the steel sheet piles after driving is guaranteed through the guide frame, and displacement in the steel sheet pile driving process is prevented; s3, steel sheet piles are driven, the steel sheet piles are oppositely arranged on the two sides of the foundation pit, the upper ends of the steel sheet piles protrude out of the ground surface, and then the foundation pit is excavated between the two rows of steel sheet piles; and S4, an enclosure supporting structure is installed, the enclosure supporting structure comprises a bracket, an enclosing purlin and an inner supporting beam, the bracket and the enclosing purlin are installed on the two sides of the foundation pit firstly, and then a relaxation arm capable of applying prestress to the pit wall of the foundation pit is installed outside the inner supporting beam. Prestress can be applied to the pit wall of the foundation pit, side pressure applied by the pit wall of the foundation pit can be actively and outwards resisted through the prestress, accordingly, displacement of the foundation pit is effectively controlled, and the side pressure released by the pit wall of the foundation pit is reasonably controlled.
本发明提供一种管廊基坑围护施工方法，包括以下步骤：步骤S1，测定基坑开挖的边界线，确定桩的钻孔位置；步骤S2，沿边界线安装导向架，通过导向架保证钢板桩打设后的整齐度，防止在钢板桩打设过程中发生移位；步骤S3，打设钢板桩，将钢板桩相对设于基坑的两侧，并将钢板桩的上端凸出地表，随后在两排钢板桩之间开挖基坑；步骤S4，安装围护支撑结构，围护支撑结构包括：托架、围檩和内撑梁，先在基坑的两侧安装托架和围檩，然后在内撑梁外部装设能够对基坑坑壁施加预应力的张弛臂。本发明能够对基坑坑壁施加预应力，通过该预应力能够主动向外抵御来自基坑坑壁给与的侧压，从而有效的控制基坑位移，将基坑坑壁释放的侧向压力进行合理控制。
Pipe gallery foundation pit support construction method
The invention provides a pipe gallery foundation pit support construction method which comprises the following steps: S1, measuring a boundary line of foundation pit excavation, and determining a drilling position of a pile; s2, a guide frame is installed along the boundary line, the uniformity of the steel sheet piles after driving is guaranteed through the guide frame, and displacement in the steel sheet pile driving process is prevented; s3, steel sheet piles are driven, the steel sheet piles are oppositely arranged on the two sides of the foundation pit, the upper ends of the steel sheet piles protrude out of the ground surface, and then the foundation pit is excavated between the two rows of steel sheet piles; and S4, an enclosure supporting structure is installed, the enclosure supporting structure comprises a bracket, an enclosing purlin and an inner supporting beam, the bracket and the enclosing purlin are installed on the two sides of the foundation pit firstly, and then a relaxation arm capable of applying prestress to the pit wall of the foundation pit is installed outside the inner supporting beam. Prestress can be applied to the pit wall of the foundation pit, side pressure applied by the pit wall of the foundation pit can be actively and outwards resisted through the prestress, accordingly, displacement of the foundation pit is effectively controlled, and the side pressure released by the pit wall of the foundation pit is reasonably controlled.
本发明提供一种管廊基坑围护施工方法，包括以下步骤：步骤S1，测定基坑开挖的边界线，确定桩的钻孔位置；步骤S2，沿边界线安装导向架，通过导向架保证钢板桩打设后的整齐度，防止在钢板桩打设过程中发生移位；步骤S3，打设钢板桩，将钢板桩相对设于基坑的两侧，并将钢板桩的上端凸出地表，随后在两排钢板桩之间开挖基坑；步骤S4，安装围护支撑结构，围护支撑结构包括：托架、围檩和内撑梁，先在基坑的两侧安装托架和围檩，然后在内撑梁外部装设能够对基坑坑壁施加预应力的张弛臂。本发明能够对基坑坑壁施加预应力，通过该预应力能够主动向外抵御来自基坑坑壁给与的侧压，从而有效的控制基坑位移，将基坑坑壁释放的侧向压力进行合理控制。
Pipe gallery foundation pit support construction method
一种管廊基坑围护施工方法
WANG KE (author) / LI ZHENG (author) / DUANMU YONGZHENG (author) / ZHENG MINGLIN (author) / PENG GUANGMOU (author) / LI WEIWEI (author) / ZHANG BAO (author) / WANG JUNPENG (author) / ZUO YUYANG (author) / LI XIANG (author)
2023-09-19
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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