Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for resisting upheaval deformation during excavation of foundation pit above existing tunnel
The invention discloses a construction method for resisting upheaval deformation during excavation of a foundation pit above an existing tunnel in the technical field of foundation pit construction, and the construction method comprises the following steps: S1, drilling a hole in the center of a pre-excavated foundation pit to form a mounting channel, placing a semi-spherical base at the bottom of the mounting channel, and penetrating hollow auxiliary rods through the base to be radially pierced into a soil body, the slurry is injected into the soil body along the auxiliary rod; s2, the steel ball is placed in the base, and the steel ball abuts against the auxiliary rod; the baffle is annularly arranged on the inner wall of the mounting channel, and the end, where the spring is fixed, of the pressing rod is pushed into the mounting channel and abuts against the steel ball; s3, the compressed length of the spring is selected according to the pressing force, the pressing rod is pressed into the hollow channel, and then the pressing rod is fixedly connected with the baffle; self-adaptive adjustment can be carried out according to rebound of the bottom of the foundation pit, so that part of stress is released, and supporting of the device to the bottom of the foundation pit is guaranteed.
本发明公开了基坑施工技术领域的一种既有隧道上方基坑开挖抗隆起变形的施工方法，包括以下步骤：S1、在预挖基坑的中心部位转孔，形成安装通道，将半圆球型的底座放置在安装通道底部，并将中空的辅助杆穿过底座呈放射状刺入土体中，并将泥浆沿辅助杆注入土体中；S2、将钢球放入底座内，使钢球与辅助杆相抵；并将挡板呈环形布置在安装通道内壁上，再将压杆固定弹簧的一端推入安装通道内并与钢球相抵；S3、根据施压力度选择弹簧被压缩长度，并将压杆压入中空通道内，再将压杆与挡板固定连接；本发明能根据基坑底部的反弹进行自适应调节，从而对部分应力进行释放，保障装置对基坑底部的支撑。
Construction method for resisting upheaval deformation during excavation of foundation pit above existing tunnel
The invention discloses a construction method for resisting upheaval deformation during excavation of a foundation pit above an existing tunnel in the technical field of foundation pit construction, and the construction method comprises the following steps: S1, drilling a hole in the center of a pre-excavated foundation pit to form a mounting channel, placing a semi-spherical base at the bottom of the mounting channel, and penetrating hollow auxiliary rods through the base to be radially pierced into a soil body, the slurry is injected into the soil body along the auxiliary rod; s2, the steel ball is placed in the base, and the steel ball abuts against the auxiliary rod; the baffle is annularly arranged on the inner wall of the mounting channel, and the end, where the spring is fixed, of the pressing rod is pushed into the mounting channel and abuts against the steel ball; s3, the compressed length of the spring is selected according to the pressing force, the pressing rod is pressed into the hollow channel, and then the pressing rod is fixedly connected with the baffle; self-adaptive adjustment can be carried out according to rebound of the bottom of the foundation pit, so that part of stress is released, and supporting of the device to the bottom of the foundation pit is guaranteed.
本发明公开了基坑施工技术领域的一种既有隧道上方基坑开挖抗隆起变形的施工方法，包括以下步骤：S1、在预挖基坑的中心部位转孔，形成安装通道，将半圆球型的底座放置在安装通道底部，并将中空的辅助杆穿过底座呈放射状刺入土体中，并将泥浆沿辅助杆注入土体中；S2、将钢球放入底座内，使钢球与辅助杆相抵；并将挡板呈环形布置在安装通道内壁上，再将压杆固定弹簧的一端推入安装通道内并与钢球相抵；S3、根据施压力度选择弹簧被压缩长度，并将压杆压入中空通道内，再将压杆与挡板固定连接；本发明能根据基坑底部的反弹进行自适应调节，从而对部分应力进行释放，保障装置对基坑底部的支撑。
Construction method for resisting upheaval deformation during excavation of foundation pit above existing tunnel
一种既有隧道上方基坑开挖抗隆起变形的施工方法
SU FENGTAO (Autor:in) / LI YADONG (Autor:in) / WANG XIAOKAI (Autor:in) / WEI HANGYU (Autor:in) / OUYANG JIAN (Autor:in) / ZENG QINGCHENG (Autor:in) / HUANG SHUHUA (Autor:in)
25.10.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
Method for excavation construction of foundation pit above existing tunnel
| Europäisches Patentamt | 2020
| Europäisches Patentamt | 2024
Design and construction method for foundation pit above axial force servo control tunnel upheaval
| Europäisches Patentamt | 2024
Excavation supporting structure for excavation of foundation pit above tunnel
| Europäisches Patentamt | 2023
Excavation method for foundation pit above operation railway tunnel
| Europäisches Patentamt | 2015