Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Deep foundation pit fast-descending flash support steel support system and excavation construction method
The invention provides a deep foundation pit fast-descending flash support steel support system and an excavation construction method. The excavation construction method comprises the steps that a, a first layer of earthwork is excavated, and a first conventional support is constructed; b, a second layer of earthwork is excavated downwards to a certain depth, and a fast-descending steel support is assembled below the first conventional support of the foundation pit and connected with a fast-descending steel support vertical hoisting system; the hydraulic servo system is pushed outwards; c, the earthwork continues to be excavated, the hydraulic servo system is subjected to pressure relief and withdrawn, and the vertical hoisting system downwards hoists the quick-drop steel support to the designed elevation and then applies jacking force to the underground diaphragm wall; constructing a conventional support of the current layer; d, the step c is cycled to excavate the foundation pit until the last layer of earthwork is excavated; vertically hoisting the prompt drop steel support to the designed elevation of the pit bottom; and a foundation pit bottom plate is constructed. According to the method, the unsupported exposure time of the foundation pit can be greatly shortened, and the beneficial effect of deep foundation pit excavation deformation control is effectively achieved.
本发明提供一种深基坑速降闪撑钢支撑体系及开挖施工方法，方法包括：a.开挖第一层土方，施工第一道常规支撑；b.向下开挖第二层土方至一定深度，在基坑第一道常规支撑下拼装速降钢支撑，并与速降钢支撑竖向吊放系统连接；液压伺服系统向外推出；c.继续开挖土方，液压伺服系统卸压收回，竖向吊放系统向下吊放速降钢支撑至设计标高后对地下连续墙施加顶力；施工当前层常规支撑；d.循环步骤c开挖基坑，直至开挖最后一层土方；竖向吊放速降钢支撑至坑底设计标高；施工基坑底板。本发明能够大幅减少基坑无支撑暴露时间，有效达到深基坑开挖变形控制的有益效果。
Deep foundation pit fast-descending flash support steel support system and excavation construction method
The invention provides a deep foundation pit fast-descending flash support steel support system and an excavation construction method. The excavation construction method comprises the steps that a, a first layer of earthwork is excavated, and a first conventional support is constructed; b, a second layer of earthwork is excavated downwards to a certain depth, and a fast-descending steel support is assembled below the first conventional support of the foundation pit and connected with a fast-descending steel support vertical hoisting system; the hydraulic servo system is pushed outwards; c, the earthwork continues to be excavated, the hydraulic servo system is subjected to pressure relief and withdrawn, and the vertical hoisting system downwards hoists the quick-drop steel support to the designed elevation and then applies jacking force to the underground diaphragm wall; constructing a conventional support of the current layer; d, the step c is cycled to excavate the foundation pit until the last layer of earthwork is excavated; vertically hoisting the prompt drop steel support to the designed elevation of the pit bottom; and a foundation pit bottom plate is constructed. According to the method, the unsupported exposure time of the foundation pit can be greatly shortened, and the beneficial effect of deep foundation pit excavation deformation control is effectively achieved.
本发明提供一种深基坑速降闪撑钢支撑体系及开挖施工方法，方法包括：a.开挖第一层土方，施工第一道常规支撑；b.向下开挖第二层土方至一定深度，在基坑第一道常规支撑下拼装速降钢支撑，并与速降钢支撑竖向吊放系统连接；液压伺服系统向外推出；c.继续开挖土方，液压伺服系统卸压收回，竖向吊放系统向下吊放速降钢支撑至设计标高后对地下连续墙施加顶力；施工当前层常规支撑；d.循环步骤c开挖基坑，直至开挖最后一层土方；竖向吊放速降钢支撑至坑底设计标高；施工基坑底板。本发明能够大幅减少基坑无支撑暴露时间，有效达到深基坑开挖变形控制的有益效果。
Deep foundation pit fast-descending flash support steel support system and excavation construction method
深基坑速降闪撑钢支撑体系及开挖施工方法
PAN WEIQIANG (Autor:in) / ZHU YANFEI (Autor:in) / GUO YAN (Autor:in) / ZHU YING (Autor:in) / HOU YONGMAO (Autor:in) / LI FUHAO (Autor:in) / ZHANG SHIHONG (Autor:in) / WANG YANJIE (Autor:in) / FU AO (Autor:in) / LI HAO (Autor:in)
22.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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