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Construction method of cantilever-cast girder side-span cable-stayed support

A construction method, a cable-stayed technology, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of long support period, high foundation requirements, large amount of materials, etc., and achieve good benefits and high recycling rates , High recovery effect

Active Publication Date: 2018-06-01
CHINA RAILWAY NO 3 ENG GRP EAST CHINA CONSTR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the bowl-button full hall frame and straight-inclined column steel frame support system are commonly used in the cast-in-place section of the side span of the cantilevered beam. It also requires more fasteners, a large amount of materials, high requirements on the foundation, a large amount of settlement, and a long period of erection of the bracket

Method used

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  • Construction method of cantilever-cast girder side-span cable-stayed support
  • Construction method of cantilever-cast girder side-span cable-stayed support
  • Construction method of cantilever-cast girder side-span cable-stayed support

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Embodiment

[0053] Example: Reference figure 1 , a construction method for a side-span cable-stayed support of a cantilevered beam, comprising the following steps:

[0054] S1: construction preparation;

[0055] S2: Embedding of embedded parts of pier body;

[0056] S3: Pier body, inclined column connecting rod welding;

[0057] S4: The slanted columns are erected to form a support system;

[0058] S5: installation of the back lightning beam;

[0059] S6: Flaw detection test, if qualified, go to S7, if unqualified, return to S3;

[0060] S7: preload;

[0061] S8: Construction of the main body of the cast-in-place section;

[0062] S9: The support system is removed.

[0063] S1: Construction preparation includes:

[0064] 1) The support system has passed the design inspection and calculation.

[0065] 2) The bracket material has passed the acceptance check of the site, and the processing of the bracket rods is completed.

[0066] 3) Complete the preparation of work instructions and...

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Abstract

The invention discloses a construction method of a cantilever-cast girder side-span cable-stayed support, applies to the technical field of construction and solves the technical problems of high consumption of construction materials and long construction cycle. The construction method is characterized by comprising the steps of S1, preparing for construction; S2, embedding pier body embedded parts; S3, welding a pier body, oblique pillars and connecting bars; S4, erecting the oblique pillars to form a support system; S5, mounting Bailey beams; S6, detecting flaws, entering S7 if qualified, andreturning to S3 if not qualified; S7, pre-compressing; S8, constructing a main part of a cast-in-place segment; S9, removing the support system. The construction method has the technical advantages of short construction period and low material consumption.

Description

technical field [0001] The invention relates to the technical field of side-span construction of cantilevered beams, in particular to a construction method for side-span cable-stayed supports of cantilevered beams. Background technique [0002] Explanation on the cast-in-place section of the side span of the cantilevered beam: "Cantilevered beam", as the name implies, is a structure supported on one side, one end is buried or poured on the support, and the other end protrudes from the cantilevered support. Pouring beams. "Side span" generally refers to the segmentation of the bridge elevation, for example, the side span is the bridge span between the abutment and the bridge pier, that is, on both sides, and the middle span is the bridge span between the bridge piers, that is, in the middle . "Cast-in-place section", as the name suggests, is a certain area where concrete is cast in place. [0003] At present, the bowl-button full hall frame and straight-inclined column ste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/10
CPCE01D21/10
Inventor 贾广林李拥政郝东卫魏永平冯俊青简东星汪怡科于海国
Owner CHINA RAILWAY NO 3 ENG GRP EAST CHINA CONSTR CO LTD