Construction method for large area concrete terrace angle steel corner protector dividing joint

A construction method and technology of floor angle steel, which are applied in the directions of floors, buildings, building structures, etc., can solve the problems of reduced edge constraints of grid joints, uncompacted concrete, deformation of grid bars, etc., so as to achieve short construction time, The effect of improving the visual quality and preventing the cracking of hollow drums

Active Publication Date: 2009-07-08
中建五局第三建设有限公司
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  • Description
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Problems solved by technology

[0008] The construction methods usually used for the grid joints include post-cut joints and pre-embedded grid strips, etc. They may not be able to ensure that the floor is completely cut off due to cutting machinery and a

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0052] 1. Construction preparation:

[0053] 1.1 Technical preparation:

[0054] Prepare a targeted large-area concrete floor construction plan, and make detailed disclosures to the construction personnel. Determine the concrete mix ratio according to the design requirements, and construct the sample in advance to provide technical reference for the formal construction.

[0055] 1.2 Determine the position and spacing of the grid joints according to the specifications and the specific conditions on site, so as to control the size of the plates. Floor expansion joints must use real joints, with a spacing of 40-60m, a joint width of 20mm, a joint depth equal to the thickness of the slab, and caulking glue to fill the joints; longitudinal and transverse contraction joints must use false joints, with a spacing of 6m or the same column grid size , the width should be 10mm, the concrete floor should be cut and shaved after reaching the strength, the depth should be 1 / 5-1 / 3 of the t...

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Abstract

The invention discloses a method for constructing an angle steel corner guard dividing joint of a large area concrete pad, which comprises the followings steps: construction preparation; base layer treatment; true joint angle steel corner guard construction; terrace concrete construction; terrace concrete maintenance; dummy joint construction; and joint embedment. The method for constructing the angle steel corner guard dividing joint of the large area concrete pad has the advantages of simple and convenient operation, easy popularization, smaller operation workload, short lasting construction time, less resource consumption and good impression, and effectively avoids the hollowing cracking of the large area concrete pad.

Description

technical field [0001] The invention relates to a construction method for large-area concrete floor grid joints, in particular to a construction method for large-area concrete floor angle steel corner guard grid joints. Background technique [0002] As a brittle and thin-walled structure, large-area concrete floors are easily affected by restraint stress and temperature stress, resulting in hollowing and cracking; and during use, with frequent wear and tear on the surface, hollowing and cracking will continue to develop. [0003] 1. The impact of constraints: [0004] Generally speaking, the base layer of the floor is either a concrete structural slab or a compacted soil layer (pebble sand layer). The thickness or linear expansion coefficient of the concrete floor is quite different from that of the concrete floor. The expansion and creep of the two are inconsistent, and it is easy to This caused hollowing and cracking of the thin-walled structure of the concrete floor. ...

Claims

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Application Information

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IPC IPC(8): E04F15/14
Inventor 粟元甲张英涛谢小红
Owner 中建五局第三建设有限公司
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