Inverted steel bar truss concrete laminated board and construction method thereof

A technology of reinforced concrete and steel trusses, which is applied to floors, building components, buildings, etc., can solve problems such as waste of steel bars, and achieve the effects of saving installation hours, steel materials, and high bending rigidity

Inactive Publication Date: 2019-03-26
王海
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The steel truss can increase the rigidity of the laminated slab and reduce the deflection during the construction process. However, more steel bars are required to make the web bars of the steel bar truss. The actual situation may not require so many web bars, resulting in waste of steel bars.

Method used

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  • Inverted steel bar truss concrete laminated board and construction method thereof
  • Inverted steel bar truss concrete laminated board and construction method thereof
  • Inverted steel bar truss concrete laminated board and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A construction method for an inverted reinforced truss concrete composite slab, comprising the following steps in sequence:

[0044] a. Manufacture of inverted steel truss: firstly, in the prefabrication factory, select the appropriate steel bar diameter according to the design and calculation results, and place the three straight bars at the three vertices of the inverted triangle through the limit device, and the size of the triangle is determined in advance according to the calculation. Bending the straight bars into wavy bars, all of which are automatically formed by machinery, and welding the two bars to the above three straight bars from the two sides of the inverted triangle respectively, and the welding points are located at the bending section of the bars At the point of contact with the straight bars, weld tie bars between the two upper straight bars at intervals. High-frequency resistance spot welding is used to ensure the welding quality of the welding proces...

Embodiment 2

[0050] A construction method for an inverted reinforced truss concrete composite slab, comprising the following steps in sequence:

[0051] a. Manufacture of inverted steel truss: firstly, in the prefabrication factory, select the appropriate steel bar diameter according to the design and calculation results, and place the three straight bars at the three vertices of the inverted triangle through the limit device, and the size of the triangle is determined in advance according to the calculation. Bending the straight bars into wavy bars, all of which are automatically formed by machinery, and welding the two bars to the above three straight bars from the two sides of the inverted triangle respectively, and the welding points are located at the bending section of the bars At the point of contact with the straight bars, weld tie bars between the two upper straight bars at intervals. High-frequency resistance spot welding is used to ensure the welding quality of the welding proces...

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Abstract

The invention discloses an inverted steel bar truss concrete laminated board and a construction method thereof. The laminated board is composed of a reinforced concrete precast slab, an inverted steelbar truss and a post-cast reinforced concrete laminated layer. The reinforced concrete precast slab comprises precast slab concrete and precast slab steel bars. The inverted steel bar truss is formedby welding three straight ribs and two curved ribs. The three straight ribs are placed in parallel and respectively located at the three apexes of the inverted triangle. The two curved ribs are welded with the three straight ribs from the sides respectively to manufacture the reinforced concrete precast slab and the inverted steel bar truss integrally, and the two straight ribs on the upper layerare buried in the precast slab concrete. The post-cast reinforced concrete laminated layer includes laminated layer concrete and laminated layer steel bars. The inverted steel bar truss reduces a complex support system at the precast slab bottom during construction, and saves cost. At the same time, the inverted steel bar truss can effectively improve the rigidity and the bearing capacity of thestructure in the construction stage of the inverted steel bar truss, and the deflection and the cracking possibility of the precast slab in the construction stage are greatly reduced.

Description

technical field [0001] The invention relates to the field of construction floor slab construction, more precisely, an inverted reinforced truss concrete composite slab and a construction method thereof. technical background [0002] The reinforced concrete laminated slab is a combination of prefabrication and cast-in-place technology, and a layer of concrete is poured on the prefabricated components to form an assembled integral structure. Reinforced concrete laminated slabs have the advantages of saving scaffolding and formwork, fast construction, and good integrity. With the continuous advancement of my country's housing industrialization, the application of laminated slabs is increasing. [0003] According to the mechanical performance, the concrete laminated slab structure can be divided into two types. If the prefabricated slab is hoisted in place during construction, and supports are set under it, the load during the construction stage will be borne by the supports, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B5/38
CPCE04B5/38
Inventor 王海
Owner 王海
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