A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Underpinning method for jacking
The invention discloses an underpinning method for jacking. Foundation excavation is conducted on the two sides of a jacked object; holes are drilled in a foundation at the bottom of a jacking object, and a bottom penetrating steel pipe is installed in each drilled hole; h-shaped steel beams are installed on the two sides of a jacked object, and hydraulic jacks are adopted for jacking the bottoms of the H-shaped steel beams; the ends of the two longitudinal horizontal rods arranged in the height direction of a jacked object are connected with the upper portions and the middle portions of the vertical rods correspondingly, the ends of the diagonal web rods are connected with the bottoms of the vertical rods, the ends of the bottom penetrating steel pipes are connected with the bottoms of the vertical rods, and the upper transverse horizontal rods and the lower transverse horizontal rods are connected with the tops and the bottoms of the vertical rods correspondingly. The pull rods are connected with the diagonal bracings and the vertical rods. The H-shaped steel beams, the bottom penetrating steel pipes, the vertical rods, the longitudinal horizontal rods and the diagonal web members form a stress truss, and the truss bodies are connected through the transverse horizontal rods, the pull rods and the diagonal bracings. After the cement-based grouting material in the gap between the bottom-penetrating steel pipe and the hole wall reaches the strength, pre-jacking is conducted; and the bottom penetrating steel pipe is jacked after being separated from the ground foundation.
本发明公开了一种顶升用托换方法，在顶升对象两侧进行基础开挖；在顶升对象底部的基础钻孔，在每个钻孔内安装穿底钢管；在顶升对象两侧安装H型钢梁，在H型钢梁底部采用液压千斤顶支顶；在H型钢梁上安装斜腹杆、纵向水平杆，沿着顶升对象高度方向的设置的两道纵向水平杆的端部分别与竖杆上部、中部相连，斜腹杆端部与竖杆底部相连，穿底钢管端部与竖杆底部相连，上、下横向水平杆分别与竖杆顶部和底部相连，拉杆和剪刀撑和竖杆相连。H型钢梁、穿底钢管，竖杆，纵向水平杆，斜腹杆组成一榀受力桁架，横向水平杆、拉杆和剪刀撑将各榀桁架连接起来；待穿底钢管与孔壁间空隙内水泥基灌浆料达到强度后，进行预顶；将穿底钢管与地面基础分离后顶升。
Underpinning method for jacking
The invention discloses an underpinning method for jacking. Foundation excavation is conducted on the two sides of a jacked object; holes are drilled in a foundation at the bottom of a jacking object, and a bottom penetrating steel pipe is installed in each drilled hole; h-shaped steel beams are installed on the two sides of a jacked object, and hydraulic jacks are adopted for jacking the bottoms of the H-shaped steel beams; the ends of the two longitudinal horizontal rods arranged in the height direction of a jacked object are connected with the upper portions and the middle portions of the vertical rods correspondingly, the ends of the diagonal web rods are connected with the bottoms of the vertical rods, the ends of the bottom penetrating steel pipes are connected with the bottoms of the vertical rods, and the upper transverse horizontal rods and the lower transverse horizontal rods are connected with the tops and the bottoms of the vertical rods correspondingly. The pull rods are connected with the diagonal bracings and the vertical rods. The H-shaped steel beams, the bottom penetrating steel pipes, the vertical rods, the longitudinal horizontal rods and the diagonal web members form a stress truss, and the truss bodies are connected through the transverse horizontal rods, the pull rods and the diagonal bracings. After the cement-based grouting material in the gap between the bottom-penetrating steel pipe and the hole wall reaches the strength, pre-jacking is conducted; and the bottom penetrating steel pipe is jacked after being separated from the ground foundation.
本发明公开了一种顶升用托换方法，在顶升对象两侧进行基础开挖；在顶升对象底部的基础钻孔，在每个钻孔内安装穿底钢管；在顶升对象两侧安装H型钢梁，在H型钢梁底部采用液压千斤顶支顶；在H型钢梁上安装斜腹杆、纵向水平杆，沿着顶升对象高度方向的设置的两道纵向水平杆的端部分别与竖杆上部、中部相连，斜腹杆端部与竖杆底部相连，穿底钢管端部与竖杆底部相连，上、下横向水平杆分别与竖杆顶部和底部相连，拉杆和剪刀撑和竖杆相连。H型钢梁、穿底钢管，竖杆，纵向水平杆，斜腹杆组成一榀受力桁架，横向水平杆、拉杆和剪刀撑将各榀桁架连接起来；待穿底钢管与孔壁间空隙内水泥基灌浆料达到强度后，进行预顶；将穿底钢管与地面基础分离后顶升。
Underpinning method for jacking
一种顶升用托换方法
HOU HONGTAO (author) / WANG QIN (author) / LIU HUAJUN (author) / WANG HENG (author)
2022-12-09
Patent
Electronic Resource
Chinese
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