Hoisting device and installation method for prefabricated beams of sloping roofs of assembled concrete structures

Abstract

The present invention provides a device and installation method for hoisting precast beams for inclined roofs of assembled concrete structures, which belongs to the field of building construction technology, and is used to solve the safety problem in the process of hoisting precast beams for inclined roofs in the existing assembled construction method. It fixes the angle steel support plate on the top side of the precast column through embedded sleeves and high-strength bolts, and uses this as a temporary placement point for the precast beam, thereby solving the safety problem in the process of hoisting precast beams for inclined roofs of existing precast assembled concrete structures and improving construction safety. In addition, according to the actual situation of the project, a support component is added to the main reinforcement on the outer side of the precast column to temporarily support the center of the precast beam to prevent the precast beam from falling. This installation method can resist the risk of falling when the inclined roof precast beam is hoisted without destroying the original structural system, and provides favorable conditions for the hoisting construction of the inclined roof precast beam on the steel pipe formwork rack, thereby achieving the purpose of safe production in construction.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a hoisting device and an installation method for prefabricated beams of an assembled concrete structure inclined roof. Background Art

[0002] With the accelerated development of urbanization and the improvement of environmental protection requirements in my country, prefabricated and assembled buildings have been vigorously promoted by the country due to their advantages over cast-in-place construction technology, such as fast construction speed, less environmental pollution, and high comprehensive social benefits. However, prefabricated and assembled construction is rarely involved in sloping roofs. During the hoisting process of prefabricated beams on sloping roofs, due to the horizontal angle between the prefabricated beams and the sloping roof, it is difficult to control the falling of the hoisted prefabricated beams when they are directly in place on the steel pipe formwork rack.

[0003] Therefore, there is an urgent need for a tool-type device for hoisting prefabricated beams of pitched roofs of assembled concrete structures to overcome the above-mentioned problems. The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information is the prior art known to those skilled in the art. Summary of the invention

[0004] The purpose of the present invention is to provide a device and a method for hoisting precast beams for sloping roofs of assembled concrete structures, so as to solve the safety problem in the process of hoisting precast beams for sloping roofs in the existing assembled construction method.

[0005] In order to achieve the above object, the technical solution of the present invention is:

[0006] A device for hoisting prefabricated beams for an assembled concrete structure inclined roof, used for temporarily placing the prefabricated beams on the top surface of prefabricated columns, comprising:

[0007] An angle steel support plate, the angle steel support plate is fixed to the top side of the prefabricated column through a connecting piece;

[0008] A support assembly, the support assembly includes a wooden square, a U-shaped adjustable support bracket and a steel pipe support which are fixedly connected in sequence, wherein the wooden square is clamped and fixed on the outer main reinforcement of the prefabricated column, and the end of the steel pipe support is tightened at the center position of the prefabricated beam connection surface.

[0009] Compared with the prior art, the beneficial technical effects of the present invention are:

[0010] 1. The device for hoisting precast beams of sloping roofs of assembled concrete structures provided by the present invention fixes the angle steel support plate on the top side of the precast column through embedded sleeves and high-strength bolts, and uses this as a temporary placement point for the precast beams, thereby solving the safety problem in the hoisting process of the existing precast precast beams of sloping roofs of assembled concrete structures and improving the construction safety. Moreover, according to the actual situation of the project, a support component is added to the main reinforcement on the outer side of the precast column to temporarily support the center of the precast beam to prevent the precast beam from falling. In addition, the angle steel support plate, high-strength bolts, channel steel, inclined steel wedges, wooden squares, U-shaped adjustable support brackets, steel pipe supports, etc. are all recyclable components, which are easy to operate, low-cost, environmentally friendly and pollution-free, and will not affect the construction progress. They are detachable and turnover-friendly, saving construction costs.

[0011] 2. The installation method for the prefabricated beam hoisting device for the sloping roof of the assembled concrete structure provided by the present invention can resist the risk of the prefabricated beam of the sloping roof falling during the hoisting without destroying the original structural system, and provide favorable conditions for the hoisting construction of the prefabricated beam of the sloping roof on the steel pipe formwork rack, thereby achieving the purpose of safe production in construction. The installation method is easy to operate, has low requirements for materials and equipment, is simple to construct, has a reliable and effective connection method, is easier to master by on-site construction personnel, can ensure construction quality, and has good promotion value.

[0012] Furthermore, considering that the center of gravity of the precast beam temporarily placed on the sloping roof is unstable, and there is still a gap between the precast beam and the precast column to be connected, when the precast beam is temporarily placed on the top surface of the precast column, channel steel is also included. The channel steel is arranged in the gap between the angle steel supporting plate and the end face of the precast beam, and is tightly filled with a number of inclined steel wedges.

[0013] Furthermore, considering that the prefabricated beam needs to be temporarily placed on the top surface of the prefabricated column before installation, and the top surface of the prefabricated column is provided with outer reinforcement of the prefabricated column, and the prefabricated beam needs to be installed on a sloping roof, it is impossible to temporarily place the prefabricated beam on the top surface of the prefabricated column after hoisting, but it is necessary to set a temporary placement point on the top side of the prefabricated column. Therefore, the connecting piece includes an embedded sleeve and a high-strength bolt, and the angle steel support plate is opened outward, wherein the side close to the prefabricated column is connected to the embedded sleeve in the prefabricated column and fixed by a high-strength bolt. In other words, one plane of the angle steel support plate is tightly fixed to the top side of the prefabricated column, and the other plane is used to temporarily place the prefabricated beam.

[0014] Furthermore, in order to ensure the stress stability of the entire system, the angle steel supporting plate is made of equilateral angle steel, wherein the angle steel has an edge width of ≥140 mm and an edge thickness of ≥14 mm.

[0015] Furthermore, in order to facilitate material acquisition, save costs, and meet the support force requirements, the U-shaped adjustable support bracket is made of Q235B grade steel pipe with an outer diameter of φ38mm, a wall thickness of ≥5.0mm, and a total length of ≤600mm.

[0016] Furthermore, in order to facilitate material acquisition, save costs, and facilitate tight contact with the center of the prefabricated beam connection surface, the steel pipe support is made of Q235B grade steel pipe with an outer diameter of φ48mm and a wall thickness of ≥3.0mm.

[0017] The present invention also provides an installation method for the aforementioned prefabricated beam hoisting device for an assembled concrete structure inclined roof, the installation method comprising:

[0018] Step 1: Provide the aforementioned prefabricated beam hoisting device for the prefabricated concrete structure inclined roof for standby use;

[0019] Step 2: Before installing the prefabricated beams of the sloping roof, fix the angle steel support plate on the side of the prefabricated column through embedded sleeves and high-strength bolts;

[0020] Step 3: According to the on-site conditions, weld the channel steel at the gap between the angle steel support plate and the end face of the precast beam, and fill the inclined gap tightly with several inclined steel wedges to serve as a temporary placement point for the precast beam;

[0021] Step 4: Hoist the precast beam, and after the precast beam is temporarily in place, fix the support assembly formed by wooden planks, U-shaped adjustable support brackets and steel pipe supports in sequence at the main reinforcement on the outer side of the precast column on the top surface of the precast column concrete to temporarily support the center of the precast beam connection surface to prevent the precast beam from falling.

[0022] Furthermore, the U-shaped adjustable support bracket is made of a Q235B grade steel pipe with an outer diameter of φ38mm, a wall thickness of ≥5.0mm, and a total length of ≤600mm.

[0023] Furthermore, the steel pipe support is made of Q235B grade steel pipe with an outer diameter of φ48mm and a wall thickness of ≥3.0mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A top view of a prefabricated beam hoisting device for an assembled concrete structure inclined roof according to the present invention;

[0025] Figure 2 This is a front view of a prefabricated beam hoisting device for an assembled concrete structure inclined roof according to the present invention;

[0026] Figure 3 The present invention is a schematic diagram of the installation of a prefabricated beam hoisting device for an assembled concrete structure sloping roof.

[0027] In the figure:

[0028] 1- Precast column; 2- Precast beam; 3- Angle steel support plate; 4- Embedded sleeve; 5- High-strength bolt; 6- Channel steel; 7- Inclined steel wedge; 8- Wooden square; 9- U-shaped adjustable support bracket; 10- Steel pipe support; 11- Main reinforcement on the outer side of precast column. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the prefabricated beam lifting device and installation method for the sloping roof of an assembled concrete structure proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer based on the following description and claims. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. For the convenience of description, the "upper" and "lower" described below are consistent with the upper and lower directions of the accompanying drawings, but this cannot be a limitation of the technical solution of the present invention.

[0030] Embodiment 1

[0031] Combine the following Figures 1 to 3 , the structural composition of the prefabricated beam lifting device for the inclined roof of the assembled concrete structure of the present invention is described in detail.

[0032] Please refer to Figures 1 to 3 A device for hoisting precast beams for sloping roofs of assembled concrete structures is used to temporarily place the precast beams 2 on the top surface of the precast columns 1. The device includes an angle steel support plate 3 and a support assembly. The angle steel support plate 3 is fixed to the top side surface of the precast column 1 through a connector; the support assembly includes a wooden square 8, a U-shaped adjustable support bracket 9 and a steel pipe support 10 that are fixedly connected in sequence, wherein the wooden square 8 is clamped and fixed on the outer main reinforcement of the precast column 1, and the end of the steel pipe support 10 is tightened to the center position of the connection surface of the precast beam 2.

[0033] Specifically, the hoisting device for the precast beams of the sloping roof of the assembled concrete structure provided in this embodiment fixes the angle steel support plate 3 on the top side of the precast column through a connector, and uses this as a temporary placement point for the precast beam 2, thereby solving the safety problem in the hoisting process of the precast beams of the sloping roof of the existing precast assembled concrete structure and improving the construction safety. In addition, according to the actual project situation, a support component is added at the main reinforcement 11 on the outside of the precast column to temporarily support the center of the precast beam 2 to prevent the precast beam 2 from falling. It is achieved that the risk of falling of the precast beams of the sloping roof is resisted when hoisting without destroying the original structural system, and favorable conditions are provided for the hoisting construction of the precast beams of the sloping roof on the steel pipe formwork rack, thereby achieving the purpose of safe production in construction.

[0034] In this embodiment, it is more preferred that, considering that the center of gravity of the precast beam temporarily placed on the sloping roof is unstable and there is still a gap between the precast beam and the precast column to be connected, when the precast beam is temporarily placed on the top surface of the precast column, channel steel is also included. The channel steel is arranged in the gap between the angle steel supporting plate and the end face of the precast beam, and is tightly filled with a number of inclined steel wedges.

[0035] In this embodiment, it is more preferred that, considering that the prefabricated beam needs to be temporarily placed on the top surface of the prefabricated column before installation, and the top surface of the prefabricated column is provided with outer reinforcement of the prefabricated column, and the prefabricated beam needs to be installed on a sloping roof, it is impossible to temporarily place the prefabricated beam on the top surface of the prefabricated column after hoisting, but it is necessary to set a temporary placement point on the top side of the prefabricated column. Therefore, the connecting piece includes an embedded sleeve and a high-strength bolt, and the angle steel support plate is opened outward, wherein the side close to the prefabricated column is connected to the embedded sleeve in the prefabricated column and fixed by a high-strength bolt. In other words, one plane of the angle steel support plate is closely fixed to the top side of the prefabricated column, and the other plane thereof is used to temporarily place the prefabricated beam.

[0036] In this embodiment, more preferably, in order to ensure the stress stability of the entire system, the angle steel supporting plate 3 is made of equilateral angle steel, wherein the angle steel side width is ≥140 mm, and the side thickness is ≥14 mm.

[0037] In this embodiment, more preferably, in order to facilitate material acquisition, save costs, and meet the support force requirements, the U-shaped adjustable support bracket 9 is made of Q235B grade steel pipe with an outer diameter of φ38mm, a wall thickness of ≥5.0mm, and a total length of ≤600mm.

[0038] In this embodiment, more preferably, in order to facilitate material acquisition, save costs, and facilitate tight contact with the center of the connecting surface of the prefabricated beam 2, the steel pipe support 10 is made of Q235B grade steel pipe with an outer diameter of φ48mm and a wall thickness of ≥3.0mm.

[0039] Please continue to refer to Figures 1 to 3 This embodiment also provides an installation method for the aforementioned prefabricated beam hoisting device for an assembled concrete structure inclined roof, the installation method comprising:

[0040] Step 1: Provide the aforementioned prefabricated beam hoisting device for the prefabricated concrete structure inclined roof for standby use;

[0041] Step 2: Before installing the prefabricated beam 2 of the sloping roof, fix the angle steel support plate 3 on the side of the prefabricated column 1 through the embedded sleeve 4 and high-strength bolts 5;

[0042] Step 3: According to the on-site conditions, weld the channel steel 6 at the gap between the angle steel support plate 3 and the end face of the precast beam 2, and fill the oblique gap tightly with several oblique steel wedges 7 to serve as a temporary placement point for the precast beam 2;

[0043] Step 4: hoist the precast beam 2, and after the precast beam 2 is temporarily in place, fix the support assembly formed by the wooden square 8, the U-shaped adjustable support bracket 9 and the steel pipe support 10 in sequence at the main reinforcement 11 on the outer side of the precast column on the concrete top surface of the precast column 1 to temporarily support the center of the connection surface of the precast beam 2 to prevent the precast beam 2 from falling.

[0044] The above description is only a description of the preferred embodiments of the present invention, and does not limit the scope of the present invention. Any changes and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A device for hoisting prefabricated beams for prefabricated concrete structure sloping roofs, used to temporarily place prefabricated beams on the top surface of prefabricated columns, characterized in that: include: An angle steel support plate, the angle steel support plate is fixed to the top side of the prefabricated column through a connecting piece; A support assembly, the support assembly comprising a wooden square, a U-shaped adjustable support bracket and a steel pipe support which are fixedly connected in sequence, wherein the wooden square is clamped and fixed on the outer main reinforcement of the prefabricated column, and the end of the steel pipe support is tightly braced at the center position of the connection surface of the prefabricated beam; It also includes a channel steel, which is arranged at the gap between the angle steel supporting plate and the end face of the prefabricated beam and is tightly filled with a plurality of inclined steel wedges; The connecting piece includes an embedded sleeve and a high-strength bolt, and the angle steel support plate is opened outward, wherein one side close to the prefabricated column is connected to the embedded sleeve in the prefabricated column and fixed by the high-strength bolt; The angle steel supporting plate is made of equilateral angle steel, wherein the angle steel side width is ≥140mm and the side thickness is ≥14mm.

2. The device for hoisting prefabricated beams for sloping roofs of assembled concrete structures according to claim 1 is characterized in that: The U-shaped adjustable support bracket is made of a Q235B grade steel pipe with an outer diameter of φ38mm, a wall thickness of ≥5.0mm, and a total length of ≤600mm.

3. The device for hoisting prefabricated beams for sloping roofs of assembled concrete structures according to claim 1 is characterized in that: The steel pipe support is made of Q235B grade steel pipe with an outer diameter of φ48mm and a wall thickness of ≥3.0mm.

4. A method for installing a prefabricated beam hoisting device for an assembled concrete structure inclined roof, characterized in that: include: Step 1: Provide the prefabricated beam hoisting device for the inclined roof of the assembled concrete structure as described in any one of claims 1 to 3 for standby use; Step 2: Before installing the prefabricated beams of the sloping roof, fix the angle steel support plate on the side of the prefabricated column through embedded sleeves and high-strength bolts; Step 3: According to the on-site conditions, weld the channel steel at the gap between the angle steel support plate and the end face of the precast beam, and fill the inclined gap tightly with several inclined steel wedges to serve as a temporary placement point for the precast beam; Step 4: Hoist the precast beam, and after the precast beam is temporarily in place, fix the support assembly formed by wooden planks, U-shaped adjustable support brackets and steel pipe supports in sequence at the main reinforcement on the outer side of the precast column on the top surface of the precast column concrete to temporarily support the center of the precast beam connection surface to prevent the precast beam from falling.

5. The installation method according to claim 4, characterized in that: The U-shaped adjustable support bracket is made of a Q235B grade steel pipe with an outer diameter of φ38mm, a wall thickness of ≥5.0mm, and a total length of ≤600mm.

6. The installation method according to claim 5, characterized in that: The steel pipe support is made of Q235B grade steel pipe with an outer diameter of φ48mm and a wall thickness of ≥3.0mm.

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