Pre-stressed prefabricated hollow slab mounting structure for first floor of industrial factory building

Abstract

The utility model discloses an industrial factory building first floor prestress prefabricated hollow slab installation structure which comprises two positioning through long ribs, and U-shaped ribs are fixed to the two positioning through long ribs in the beam length direction. A cast-in-place concrete beam is arranged below the two positioning through long ribs, and the two ends of the U-shaped rib extend into the cast-in-place concrete beam; a prestressed prefabricated hollow slab is arranged at the top of the cast-in-place concrete beam; a cast-in-situ laminated layer is arranged on the prestressed prefabricated hollow slab, and the two positioning through long ribs are located in the cast-in-situ laminated layer. The utility model aims to solve the installation problem of the first-layer prestressed prefabricated hollow slab, ensures the installation flatness of the hollow slab and the reliability of the erection length of the support by taking some construction measures, and has the advantages of simplicity in construction and measure standardization.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a prestressed prefabricated hollow slab installation structure for the first floor of an industrial plant. Background Art

[0002] Prestressed prefabricated hollow slabs are widely used in prefabricated buildings due to their advantages such as light weight, no support, no secondary beams, fast construction period, and good economy. However, when used on the first floor, the ground beam is usually cast in place concrete, which often leads to the following problems during the installation of the hollow slab:

[0003] 1. Because the finished surface of cast-in-place concrete beams is usually not flat enough, there is often a height difference after the hollow slab is erected, which brings great trouble to the subsequent leveling of the superimposed layer construction;

[0004] 2. Because no measures were taken to ensure the erection length of the hollow slab during the construction of the ground beam, the design requirements were not met, resulting in safety hazards. Utility Model Content

[0005] The utility model aims to provide a prestressed prefabricated hollow slab installation structure for the first floor of an industrial plant to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a prestressed prefabricated hollow slab installation structure for the first floor of an industrial plant, comprising two positioning full-length bars, on which U-shaped bars are fixed along the length direction of the beam;

[0007] A cast-in-place concrete beam is arranged below the two positioning through-length bars, and both ends of the U-shaped bars extend into the cast-in-place concrete beam;

[0008] A prestressed prefabricated hollow slab is provided on the top of the cast-in-place concrete beam;

[0009] The prestressed prefabricated hollow slab is provided with a cast-in-place superimposed layer, and two positioning through-length reinforcements are located in the cast-in-place superimposed layer.

[0010] Preferably, a leveling mortar is provided on the top of the cast-in-place concrete beam, and the leveling mortar is in contact with the bottom of the prestressed prefabricated hollow slab.

[0011] Preferably, the U-shaped rib is tied and fixed to two positioning through-length ribs.

[0012] Preferably, there are two prestressed prefabricated hollow slabs, and the two prestressed prefabricated hollow slabs are respectively located on both sides of the U-shaped rib.

[0013] Preferably, the two prestressed prefabricated hollow slabs are located at the same horizontal height.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The mortar-seating method can ensure that the prestressed prefabricated hollow slabs are at the same elevation after installation, reducing the difficulty of subsequent leveling of the superimposed layer;

[0016] 2. The positioning steel bars are set to ensure the erection length at both ends of the hollow slab, avoiding safety risks caused by insufficient erection length.

[0017] The utility model is dedicated to solving the installation problem of the prestressed prefabricated hollow slab on the first floor. By taking some construction measures, the flatness of the hollow slab installation and the reliable length of the support erection are guaranteed, and the construction is simple and the measures are standardized. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model.

[0019] In the figure: 1- cast-in-place concrete beam; 2- U-shaped reinforcement; 3- positioning full-length reinforcement; 4- leveling mortar; 5- prestressed prefabricated hollow slab; 6- cast-in-place composite layer. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 The utility model provides a technical solution: a prestressed prefabricated hollow slab installation structure for the first floor of an industrial plant, comprising two positioning full-length bars 3, on which U-shaped bars 2 are fixed along the length direction of the beam;

[0022] A cast-in-place concrete beam 1 is arranged below the two positioning through-length bars 3, and both ends of the U-shaped bars 2 extend into the cast-in-place concrete beam 1;

[0023] A prestressed prefabricated hollow slab 5 is provided on the top of the cast-in-place concrete beam 1;

[0024] A cast-in-place overlap layer 6 is provided on the prestressed prefabricated hollow slab 5, and two positioning full-length bars 3 are located in the cast-in-place overlap layer 6. The surface flatness of the concrete beam is ensured by adopting the mortaring method on the surface of the cast-in-place concrete beam. Positioning steel bars are arranged on the top of the beam to ensure the erection length of the hollow slab installation, thereby ensuring the flatness and safety of the hollow slab installation.

[0025] Combination Figure 1As shown, a leveling mortar 4 is provided on the top of the cast-in-place concrete beam 1 , and the leveling mortar 4 is in contact with the bottom of the prestressed prefabricated hollow slab 5 .

[0026] Combination Figure 1 As shown, the U-shaped reinforcement 2 is tied and fixed with two positioning full-length reinforcements 3.

[0027] Combination Figure 1 As shown, there are two prestressed prefabricated hollow slabs 5, and the two prestressed prefabricated hollow slabs 5 are respectively located on both sides of the U-shaped rib 2, and the two prestressed prefabricated hollow slabs 5 are located at the same horizontal height.

[0028] The working principle of the utility model is as follows: before pouring the cast-in-place concrete beam 1, positioning full-length reinforcement 3 is arranged on the finished surface of the structure, and U-shaped reinforcement 2 is fixed along the length direction of the beam; after pouring the cast-in-place concrete beam 1, leveling mortar 4 is used to level the hollow slab erection area; then, the prestressed prefabricated hollow slab 5 is installed and then the cast-in-place superimposed layer 6 is poured.

[0029] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the embodiments of the utility model have been shown and described, it is understandable to those of ordinary skill in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A prestressed prefabricated hollow slab installation structure for the first floor of an industrial plant, characterized by: It comprises two positioning through-length bars (3), on which U-shaped bars (2) are fixed along the length direction of the beam; A cast-in-place concrete beam (1) is arranged below the two positioning through-length reinforcement bars (3), and both ends of the U-shaped reinforcement bars (2) extend into the cast-in-place concrete beam (1); A prestressed prefabricated hollow slab (5) is arranged on the top of the cast-in-place concrete beam (1); A cast-in-place superimposed layer (6) is provided on the prestressed prefabricated hollow slab (5), and two positioning through-length reinforcement bars (3) are located in the cast-in-place superimposed layer (6).

2. The prestressed prefabricated hollow slab installation structure for the first floor of an industrial plant according to claim 1 is characterized by: A leveling mortar (4) is provided on the top of the cast-in-place concrete beam (1), and the leveling mortar (4) is in contact with the bottom of the prestressed prefabricated hollow slab (5).

3. The prestressed prefabricated hollow slab installation structure for the first floor of an industrial plant according to claim 1 is characterized by: The U-shaped rib (2) is tied and fixed to two positioning through-length ribs (3).

4. The prestressed prefabricated hollow slab installation structure for the first floor of an industrial plant according to claim 1 is characterized by: There are two prestressed prefabricated hollow slabs (5), and the two prestressed prefabricated hollow slabs (5) are respectively located on both sides of the U-shaped rib (2).

5. The prestressed prefabricated hollow slab installation structure for the first floor of an industrial plant according to claim 1 is characterized by: The two prestressed prefabricated hollow slabs (5) are located at the same level.

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