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Method for prefabricating and assembling large cantilever cover beam

A technology for prefabricating and assembling beams, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of transportation, hoisting difficulties, large crane occupation, design width of viaducts and tonnage increase, etc. The effect of processing, low investment and easy operation

Active Publication Date: 2019-01-11
SHANGHAI URBAN CONSTRUCTION MUNICIPAL ENGINEERING (GROUP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, with the increase of traffic demand, the design width and tonnage of the viaduct also increase accordingly.
Some large-sized cover beams weigh hundreds of tons, and heavy and long cover beams will cause great difficulties in transportation and hoisting
In addition, in the process of hoisting large cap beams, heavy cranes are required, which occupy a large area and will affect the traffic conditions around the construction site

Method used

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  • Method for prefabricating and assembling large cantilever cover beam
  • Method for prefabricating and assembling large cantilever cover beam
  • Method for prefabricating and assembling large cantilever cover beam

Examples

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Embodiment

[0022] Example: such as figure 1 , 5 As shown, this embodiment specifically relates to a prefabricated and assembled method for a large cantilever cover beam, which is used for lifting and splicing a large-tonnage cover beam 1 to the top of a column 2; the cover beam 1 is prefabricated into two cantilever sections of the cover beam 3 and a section of cover beam middle section 4.

[0023] Such as Figures 1 to 6 As shown, the prefabricated assembly method of the large cantilever cover beam in this embodiment specifically includes the following steps:

[0024] (1) Hoist and install the middle section 4 of the cover beam to the top of the column 2. Such as figure 2 As shown, during the hoisting process, a crane is used for hoisting, and the middle section 4 of the cover beam is in a horizontal state. The top of the column 2 is provided with a pre-embedded steel bar, and the middle section of the cover beam is provided with a sleeve. In the process of installing the middle ...

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Abstract

The invention relates to a method for prefabricating and assembling a large cantilever cover beam, which is characterized by including the steps: lifting and installing the middle section of the coverbeam to the top end of the upright column; Hoisting a cantilever section of the cover beam to an end of a middle section of the cover beam; tightly adhering the splicing surface of the cantilever segment of the cover beam and the splicing surface of the middle segment of the cover beam through an adhesive; the prestressed reinforcement is passed through the cantilever section of the cover beam and the prestressed reinforcement pipe of the middle section of the cover beam in turn, and the prestressed reinforcement is prestressed and tensioned. The invention has the advantages that the integralhoisting has the advantages of simple operation, easy stitching treatment, lower investment, etc. compared with the split hoisting.

Description

technical field [0001] The invention relates to the field of highway engineering construction, in particular to a method for prefabricating and assembling a large cantilever cover beam. Background technique [0002] In the process of constructing the viaduct, it is necessary to construct a cover beam at the top of the column. Most of the small-tonnage cap beams are prefabricated as a whole, hoisted to the top of the column by a crane, and connected to the column through a steel grouting sleeve. [0003] However, with the increase of traffic demand, the design width and tonnage of the viaduct also increase accordingly. Some large-sized cover beams weigh hundreds of tons, and heavy and long cover beams will cause great difficulties in transportation and hoisting. In addition, in the process of hoisting large cap beams, heavy-duty cranes are required, which occupy a large area and will affect the traffic conditions around the construction site. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 陈立生陈斌赵国强徐波郑杰万星
Owner SHANGHAI URBAN CONSTRUCTION MUNICIPAL ENGINEERING (GROUP) CO LTD
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