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Novel concrete composite floor slab with light steel exposed out of slab bottom

A technology for superimposing floor slabs and concrete bottom plates, which is applied in the directions of floor slabs, buildings, building reinforcements, etc., can solve the problems of lower concrete cracking and large deflection of the laminated slab, and achieve the effects of reducing self-weight, reducing the degree of cracking, and improving stiffness.

Inactive Publication Date: 2021-05-28
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current floor slab design, the laminated slab is more inclined to reduce the cost and self-weight by reducing the slab thickness. Therefore, when the laminated slab prefabricated slab bears the structural self-weight and construction load, the deflection of the laminated slab may be too large, and the lower concrete may crack rapidly.

Method used

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  • Novel concrete composite floor slab with light steel exposed out of slab bottom
  • Novel concrete composite floor slab with light steel exposed out of slab bottom
  • Novel concrete composite floor slab with light steel exposed out of slab bottom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This embodiment discloses a new type of concrete laminated floor slab with exposed light steel at the bottom of the slab, see figure 1 , including a concrete bottom 1 and a post-cast concrete belt 2 . The concrete floor 1 is composed of a prefabricated concrete layer 3 , steel bars 4 and inverted π-shaped steel 5 .

[0035] The upper surface of the prefabricated concrete layer 3 is a natural rough surface 301 , and the lower surface is a light steel embedding surface 302 .

[0036] see image 3 , the inverted π-shaped steel 5 is composed of the embedded part 501 of the π-shaped steel, the exposed part 502 of the π-shaped steel and the circular hole 503 of the π-shaped steel. The web of the π-shaped steel embedding part 501 is provided with a π-shaped steel circular hole 503 with a diameter of 14 mm.

[0037] see figure 2 , 4 , the precast concrete layer 3 has a thickness of 40 mm, and the steel bars 4 are arranged inside the precast concrete layer 3 with a distanc...

Embodiment 2

[0040] The main structure of this embodiment is the same as that of Embodiment 1, wherein the inverted π-shaped steel 5 is changed to an I-shaped steel 6. see Figure 5 and Figure 6 , The I-shaped steel 6 is composed of the embedded part 601 of the I-shaped steel, the exposed part 602 of the I-shaped steel and the circular hole 603 of the I-shaped steel. The web and flange of the I-shaped steel embedded part 601 are provided with an I-shaped steel round hole 603 with a diameter of 12 mm.

Embodiment 3

[0042] The main structure of this embodiment is the same as that of Embodiment 1, wherein the inverted π-shaped steel 5 is changed to two inverted C-shaped steels 7 . see Figure 7 and Figure 8 , the two C-shaped steel 7 are composed of C-shaped steel embedded part 701, C-shaped steel exposed part 702 and C-shaped steel round hole 703. C-shaped steel circular holes 703 are arranged on the web and flange of the C-shaped steel embedded part 701, and the diameter of the hole is 12mm.

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Abstract

The invention discloses a novel concrete composite floor slab with light steel exposed out of the slab bottom, and belongs to the technical field of constructional engineering. The novel concrete composite floor slab comprises a concrete bottom plate and a post-cast concrete strip, wherein the concrete bottom plate is composed of a prefabricated concrete layer, reinforcing steel bars and the light steel, the reinforcing steel bars are exposed in the length direction of the floor slab, the light steel is arranged at the slab bottom and is used as a stress component, the light steel is partially exposed and cannot be removed, the concrete bottom plate is inversely prefabricated in a factory, forward hoisting is performed during construction, and then the post-cast concrete strip is poured. According to the novel concrete composite floor slab with the light steel exposed out of the slab bottom, the rigidity and strength of the composite slab are increased, and construction loads can be borne. The thickness and weight of the floor slab are reduced, the cracking degree of concrete is reduced, and good economic benefits and large engineering values are obtained.

Description

technical field [0001] The invention relates to a novel concrete laminated floor slab, which belongs to the technical field of construction engineering. Background technique [0002] In recent years, the rapid development of industrialization has promoted the progress of the construction industry. In order to improve the development quality of the construction industry, various types and forms of construction materials have gradually been enriched, and construction technology has been continuously updated. The floor slab is one of the basic components of the entire building. The traditional cast-in-place floor slab has a long construction period, numerous procedures, large energy consumption and serious environmental pollution, which does not meet the construction requirements of the current construction industry. With the rapid development of prefabricated buildings, laminated slabs have become A common form of prefabricated building slabs. [0003] The laminated slab is c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B5/17E04B5/36E04C5/06
CPCE04B5/17E04B5/36E04C5/06E04B2103/02E04B2103/06
Inventor 白久林梁媛陈辉明胡少伟杨经纬金双双
Owner CHONGQING UNIV