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Large span concrete structure fracture surface construction method

A technology of concrete structure and construction method, which is applied in the directions of roads, road repair, roads, etc., can solve the problems of construction cost, construction difficulty, construction period increase, cannot be taken out and reused, etc., and achieves a simple and fast installation process, low cost, and difficulty in installation. floating effect

Inactive Publication Date: 2018-05-04
JINAN URBAN CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Due to the construction characteristics of this project, the mandrel cannot be taken out and reused after laying. If the traditional rubber inflatable mandrel and shaped formwork are used, due to the high technical content, the construction cost, construction difficulty and construction period will increase.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The section construction method of the long-span concrete structure comprises the following steps:

[0021] 1) Wrap the custom-made polystyrene foam column with a diameter of 0.9 meters and a length of 2.5 meters with a fireproof cloth, and then wrap a layer of 1 mm thick white iron sheet outside the fireproof cloth, and then make different lengths according to the design length requirements mandrel;

[0022] 2) According to the design requirements, stake out the position of the mandrel;

[0023] 3) In order to ensure the stability of the mandrel and avoid deviation during the construction process, the mandrel positioning bracket welded with the main steel bar is made, that is, two longitudinal steel bars are fixedly welded on the main steel bar at both ends of the mandrel to form a rectangle on the ground. Then add two longitudinal steel bars to the outer end of the newly added mandrel for each additional mandrel, and so on, two mandrels need six longitudinal steel ba...

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Abstract

The invention relates to the field of road engineering construction, in particular to a large span concrete structure fracture surface construction method. The method includes the steps that custom-made polystyrene foam columns are covered by asbeston, and according to the design length requirement, mandrels with various lengths are produced; according to the design requirement, the mandrel positions are set out; mandrel locating supports which are in welding connection with main rebars are made, and the mandrels are tightly fixed with the main rebars adopting a rebar welding mode; and concrete pouring is carried out. The large span concrete structure fracture surface construction method is low in cost, simple in construction and short in construction duration.

Description

technical field [0001] The invention relates to the field of road engineering construction, in particular to a construction method for a large-span concrete structure section. Background technique [0002] At present, in order to reduce the self-weight of the long-span concrete structure section and ensure the stability and safety of the structure, the core mold is used in the structure. Due to the construction characteristics of this project, the mandrel cannot be taken out and reused after laying. If the traditional rubber inflatable mandrel and shaped formwork are used, due to the high technical content, the construction cost, construction difficulty and construction period will increase. Contents of the invention [0003] In order to make up for the defects of the prior art, the invention provides a construction method for a large-span concrete structure section with low cost, simple construction and short construction period. [0004] The present invention is achieve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C19/00
CPCE01C19/00
Inventor 李云浩奚运成吕海燕翟安昌张玉涛蔡明君
Owner JINAN URBAN CONSTR GRP
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