Separately precast and assembled bent cap and construction technology

A technology of prefabricated assembly and construction technology, which is applied in the direction of erecting/assembling bridges, bridges, bridge parts, etc., which can solve the problems of negative impact, short construction period, and less workload, and achieve weight reduction, short construction period, and small environmental impact Effect

Active Publication Date: 2013-06-19
SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This construction method has less workload, short construction period, and little impact on the site environment, but the main problem is: using the segmental prefabricated cover beam technology, there is no support at both ends of each segmental prefabricated cover beam 11, 12, 13 during assembly, so The site still needs to set up brackets 8 to support the segmented cover beams, which still has a negative impact on the site

Method used

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  • Separately precast and assembled bent cap and construction technology
  • Separately precast and assembled bent cap and construction technology
  • Separately precast and assembled bent cap and construction technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] see figure 2 As shown, the designed cover beam 1 in the prior art is limited in transportation and installation due to its heavy weight.

[0036] Using the design concept of the present invention, such as Figure 5 As shown, in a specific embodiment of the prefabricated and assembled cover girder in pieces of the present invention, a plurality of prefabricated components for assembling the cover girder 1 are included.

[0037] In this embodiment, the cover beam 1 is in an inverted T shape.

[0038] The prefabricated components are specifically the multi-piece prefabricated cover beams 14 and 15 formed by dividing the cover beam 1 along the length direction. The length of the sliced ​​prefabricated cover beams 14, 15 is the same as that of the cover beam 1, and the pier column of the cover beam 1 can be directly used as a construction support when hoisting.

[0039] When assembling the prefabricated cover beams 14 and 15 in pieces, a prestressed connection method is ...

Embodiment 2

[0042] The construction technology of the sliced ​​prefabricated assembled cap beam of the present invention comprises the following steps:

[0043] Step 1: pouring a plurality of prefabricated cap beams in pieces at the prefabrication site, and applying a certain prestress.

[0044] Step 2, transporting the multi-piece prefabricated cap beams obtained in Step 1 to the construction site.

[0045] Step 3, using hoisting equipment, hoisting a plurality of prefabricated cover girders in pieces on the pier column respectively at the construction site.

[0046] Step 4, using a fixed connection method, the multi-segmented prefabricated cover beams in step 3 are fixedly connected by a prestressed fixed connection method to form a cover beam.

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Abstract

The invention discloses a separately precast and assembled bent cap which comprises a plurality of precast components for being assembled to be the bent cap; the precast components are a plurality of separately precast bent caps formed by dividing the bent cap along the length direction; and the separately precast bent caps form fixed connection by adopting a prestress connection way during assembling. The invention further discloses a construction technology for the separately precast and assembled bent cap. The separately precast and assembled bent cap disclosed by the invention has the advantages of simple structure and convenience in assembling. The construction technology for the separately precast and assembled bent cap has the benefits that a support is not required to be erected, limitations from auxiliary equipment are less, and environmental impacts are small.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a segmented prefabricated assembled cover beam. The invention also relates to a construction technique of the prefabricated and assembled cover beam in pieces. Background technique [0002] my country has built hundreds of thousands of bridges, of which more than 70% are simply supported beam bridges. Simply supported girder bridges generally have a cover beam on the top of the pier column, and use the cover girder as the supporting platform of the girder slab, so the cover girder is the main force-bearing component of the simply supported girder bridge. Usually, the cap beams are realized by concrete pouring in situ, or prefabrication in sections. [0003] Such as figure 1 Shown is a schematic diagram of the construction status of the cast-in-place concrete cover beam 1. The construction sequence is: 1) erecting the support 8 after treating the support floor 9; C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/02E01D21/00
Inventor 钟小军李国平李雪峰陆元春朱波蔡亮
Owner SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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