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An installation process of a steel sleeve box used in the construction of bridge pier caps

An installation process and a technology of steel sleeve boxes, which are applied in bridges, bridge construction, infrastructure engineering and other directions, can solve the problems of difficult construction, complex construction process and high construction cost, and achieve low construction cost, reasonable layout and convenient operation. Effect

Active Publication Date: 2020-09-08
CCCC THIRD HARBOR ENG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The construction technology of the guide frame is complicated in deep water foundation construction, the construction is difficult and the construction cost is high

Method used

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  • An installation process of a steel sleeve box used in the construction of bridge pier caps
  • An installation process of a steel sleeve box used in the construction of bridge pier caps
  • An installation process of a steel sleeve box used in the construction of bridge pier caps

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with accompanying drawing.

[0040] see Figure 1a and Figure 1b The steel box used in the installation process of the steel box for the construction of the pier cap of the present invention is rectangular and has a bottomless structure. The wall of the steel box 100 includes two wall panels 1 along the bridge direction and two horizontal The bridge wall 2 and the inner support, the inner support includes the first to third plane frames 61, 62, 63; the width of the wall 1 along the bridge is smaller than the width of the wall 2 of the cross bridge; The size is 40.4m in width along the bridge x 28.4m in width across the bridge; the wall 1 along the bridge and the wall 2 towards the cross bridge are double-walled structures; the wall 1 along the bridge is divided into two by a partition 10 A horizontal water-proof warehouse; the horizontal bridge to the wall plate 2 is divided into three horizontal wat...

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Abstract

The invention discloses a mounting process of a steel bushing box for bridge pier bearing platform construction. The mounting process comprises the following steps of foundation pit excavation, foundation bed leveling, steel sleeve box manufacturing, steel sleeve box launching preparation, steel sleeve box launching, steel sleeve box positioning and steel sleeve box sinking. When the steel sleevebox enters water, the steel sleeve box is supported by an air bag; and then a front barge provides power, two rear winches control the sliding speed to enable the steel sleeve box to slide downwards into water from an assembly platform and a launching slide way, after launching, the steel sleeve box is dragged and positioned through eight winches, and then water is injected into a wall plate cavity of the steel sleeve box to enable the steel sleeve box to sink in place. The invention discloses the mounting process of the steel sleeve box. Under the conditions that the water flow speed is low,the water level is kept relatively stable in a construction period and a river channel is narrow, positioning and sinking of the steel sleeve box are well completed through a guide-frame-free winch positioning system in combination with the topography of a bridge area, navigation and construction operation are not affected, arrangement is reasonable and simple, the construction cost is low, and operation is convenient.

Description

technical field [0001] The invention relates to an installation process of a steel sleeve box used for the construction of bridge pier caps. Background technique [0002] When the pier cap is located in the slightly weathered rock formation, steel sheet piles and steel pipe piles cannot be laid, steel pipe pile platforms and steel sheet pile cofferdams are not feasible, and the bottom of the cap is about 15-16m from the construction water level, so steel casings should be used as surrounding water structure. As the name suggests, the steel box is a temporary structure set outside the permanent structure, which acts as a cofferdam. The steel box is a type of enclosure structure commonly used in the construction of bridge foundations and substructures in water. It is especially suitable for deep water foundations in large rivers. It can withstand large water pressure and ensure the safety of foundation construction throughout the year. Especially in some conditions where con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D19/04E01D21/00
Inventor 李春晖陈家强许鲁雄余镇江邹伟
Owner CCCC THIRD HARBOR ENG
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