A support construction method for frame structure building

Abstract

The present invention relates to the field of prefabricated building construction and discloses a support construction method for frame structure buildings, wherein a connection structure is embedded in prefabricated columns, the prefabricated columns are fixed to the construction ground, and then an inclined support is connected to the embedded connection mechanism of each prefabricated column, and the tops of multiple inclined supports are connected to a horizontal support plate, which is located at the center of the bottom of the construction floor room; a prefabricated composite beam is installed between the tops of the prefabricated columns, and the ends of the horizontal support plate are mounted on the prefabricated composite beam. The present invention can solve the problem that during the construction of frame structure buildings with smaller spans, horizontal components are supported from below, the overall construction period is long, the construction work space below the horizontal components is occupied by a large amount, other construction operations are affected, and there are certain safety risks and operational inconveniences.

Description

Technical Field

[0001] The present invention relates to the field of prefabricated building construction, and in particular to a support construction method for a frame structure building. Background Art

[0002] As the construction industry develops, prefabricated buildings are becoming increasingly common. The traditional formwork support system for cast-in-place reinforced concrete structures involves first erecting a full-height scaffold, then installing the formwork and pouring concrete. If prefabricated buildings were constructed using traditional formwork or traditional formwork support methods, the resulting waste of recyclable materials, such as steel pipes, fasteners, timber beams, and formwork, would compromise safe and civilized construction management on site, ultimately failing to realize the advantages of prefabricated construction.

[0003] The construction of existing prefabricated buildings mostly adopts the method of prefabricated components and then cast-in-situ connection at the construction site. The prefabricated components include prefabricated columns, prefabricated composite beams, stairs, composite slabs, wall panels, etc. During the construction process at the construction site, the prefabricated columns are first positioned, and then the horizontal components such as prefabricated composite beams and composite slabs are first positioned and supported to the casting position. The reserved steel bars on each component are then connected, and then concrete is poured at the connection parts. Among them, the existing technology for positioning and supporting horizontal components during the process of connecting and casting prefabricated composite beams, composite slabs and other horizontal components with vertical components such as prefabricated columns is to set up a vertical support frame under the horizontal component. Although this can stably and reliably support the horizontal component and ensure accurate positioning, the overall construction period is long, the construction work space under the horizontal component is occupied by a large rate, affecting other construction operations, and there are certain safety risks and operational inconveniences. In particular, for frame structure buildings with smaller bays of 6m-9m, the above problems are particularly significant. Summary of the Invention

[0004] The present invention aims to provide a support construction method for frame structure buildings to solve the problems of adopting a bottom support method for horizontal components in the construction process of frame structure buildings with smaller spans, a long overall construction period, a large occupancy rate of the construction work space below the horizontal components, affecting other construction operations, and posing certain safety risks and operational inconveniences.

[0005] To achieve the above object, the present invention adopts the following technical solution: a support construction method for a frame structure building, comprising the following steps:

[0006] A. Production of prefabricated columns with embedded connection structures;

[0007] B. Fix the prefabricated columns to the construction ground, then connect the inclined supports to the embedded connection mechanism of each prefabricated column. The tops of multiple inclined supports are connected to a horizontal support plate, which is located at the center of the bottom of the construction floor room.

[0008] C. Install beams between the tops of precast columns, with horizontal support plates resting against the waist of the beams.

[0009] Preferably, as an improvement, the embedded connection structure in step A is located at one quarter of the height of the prefabricated column.

[0010] Preferably, as an improvement, the horizontal support plate used in step B is a cross-shaped steel plate.

[0011] Preferably, as an improvement, in step B, the top of the inclined support is hinged to the horizontal support plate.

[0012] Preferably, as an improvement, in step C, the four limbs of the horizontal support plate are pressed against the waist of the beam.

[0013] Preferably, as an improvement, in step C, a single vertical support column is applied at the bottom center of the horizontal support plate.

[0014] Preferably, as an improvement, when non-prefabricated beams are used, corbels are processed at the four ends of the horizontal support plate.

[0015] The principles and advantages of this solution are as follows: In practical application, for frame structures with smaller spans, the precast columns used as vertical components, after precise calculation, have reliable lateral load-bearing capacity. A horizontal support plate provides uniform force support from the center of the bottom of the construction floor room to the horizontal components above, such as beams and composite slabs. When needed, a single independent vertical support can be added simply at the center of the horizontal support plate. Furthermore, the horizontal support plate is located at the center of the bottom of the construction floor room. This means that if the diagonal supports, as rod-like components, were directly placed against the waist of the opposing beam, the length and strength requirements would be higher. However, by using the horizontal support plate as a transition point, the length requirements for the diagonal supports are easily met, the support stability of the horizontal components is also easily met, and less working space is occupied below the horizontal components. For buildings without precast beams, the support structure of the beams for the composite slabs can be increased by using brackets at the four ends of the horizontal support plate to ensure support stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a top view of the frame structure building erection process in Example 1 of the present invention.

[0017] Figure 2 This is a longitudinal sectional view of the erection process of the frame structure building in Example 1 of the present invention.

[0018] Figure 3 This is a top view of the clamp in Example 1 of the present invention.

[0019] Figure 4 for Figure 3 A-direction view.

[0020] Figure 5 This is a schematic structural diagram of the hoop plate in Example 1 of the present invention.

[0021] Figure 6 It is a longitudinal sectional view of the erection state of the frame structure building in Example 3 of the present invention. DETAILED DESCRIPTION

[0022] The following is further described in detail through specific implementation methods:

[0023] The figure marks in the drawings of the specification include: prefabricated column 1, prefabricated beam 2, steel plate 3, diagonal support rod 4, hoop 5, side panel 51, right wing panel 52, left wing panel 53, rubber layer 54, connecting ear plate 55, side panel 56, top plate 6, corbel 7, hinged seat 8, angle code 9, truss steel beam 10.

[0024] Example 1, a support construction method for a frame structure building, comprising the following steps:

[0025] A. Produce a prefabricated column 1 with a pre-buried connection structure, and embed bolts at one-quarter of the height of the prefabricated column 1;

[0026] B. Basically as attached Figure 1 、 Figure 2 As shown, four prefabricated columns 1 are fixed to the construction ground with cast-in-place concrete, and then the oblique support rods 4 are bolted to the embedded connection mechanism of each prefabricated column 1. The tops of the four oblique support rods 4 are hingedly connected to a horizontal cross-shaped steel plate 3. Four hinged seats 8 for the oblique support rods 4 to be hinged are welded to the center of the steel plate 3. The steel plate 3 is located at the bottom center of the construction floor room, and the bottom center of the steel plate 3 is supported on the construction ground by a vertical support column.

[0027] C. Install the prefabricated crossbeam 2 between the tops of the prefabricated columns 1, and fix the clamp 5 on the tops of the prefabricated columns 1 with bolts. Figure 3 As shown, a rubber layer 54 is fixed to the inner wall of the hoop 5, which is in close contact with the prefabricated column 1. A horizontal top plate 6 is welded to the top of the hoop 5. The prefabricated beam 2 is hoisted above the prefabricated column 1, and the end of the prefabricated beam 2 is placed on the top plate 6 at the top of the hoop 5. The friction resistance between the rubber layer 54 and the prefabricated column 1 provides support for the prefabricated beam 2 for the hoop 5.

[0028] D. A corbel 7 is pre-formed in the middle of the precast beam 2. The four limbs of the steel plate 3 are placed on the corbel 7 in the middle of the precast beam 2. The composite plate is hoisted above the steel plate 3. The steel plate 3 supports the composite plate from below. The composite plate and the precast beam 2 are connected by steel bars and then cast-in-place concrete is applied.

[0029] The hoop 5 at the top of the prefabricated column 1 for supporting the prefabricated beam 2 is composed of two hoop plates, such as Figure 4、 Figure 5 As shown, the hoop comprises a vertical side panel 51. A left wing panel 53, perpendicular to the side panel 51, is integrally formed on the upper left portion of the side panel 51. A right wing panel 52, perpendicular to the side panel 51, is integrally formed on the lower right portion of the side panel 51. Both the left and right wing panels 53, 52 are half the height of the side panel 51 and have the same length as the side panel 51. The left and right wing panels 53, 52 are located on the same side of the side panel 51. Connecting lugs 55 are welded to the transverse ends of each of the side panels 51, 53, and 52. These lugs 55 are provided with two vertically parallel connection holes and are tilted at a 45° angle relative to the side panel 51, 53, or 52 to which they are attached. The rubber layer 54 is a rubber sheet with a thickness of ≥5 mm bonded to the inside of the hoop. The rubber sheet on the hoop plate acts as an elastic cushioning layer, not only increasing frictional resistance but also preventing rigid contact between the hoop 5 and the precast column 1, ensuring that the concrete surface of the precast column 1 is not damaged. By placing the connection point between the two hoop plates at the corners of the hoop 5, the hoop 5 has sufficient bearing strength in the main load direction of the precast beam 2 and facilitates installation. By joining the upper and lower separate wing plates, each of the four corners can be supported by high-strength bolts, ensuring uniform overall force during use and more stable support for the precast beam 2.

[0030] For frame-structured buildings with smaller spans, the precast columns 1, used as vertical components, have been precisely calculated to have reliable lateral load-bearing capacity. A horizontal support plate provides uniform force support from the center of the bottom of the construction floor room to the precast beams 2, composite slabs, and other horizontal components above. When needed, a single independent vertical support can be added simply at the center of the horizontal support plate. Furthermore, the horizontal support plate is located at the center of the bottom of the construction floor room. This means that if the diagonal supports, as rod-like components, were directly placed against the waist of the opposing beam, the length and strength requirements would be higher. However, with the horizontal support plate serving as a transition point, the length requirements for the diagonal supports are easily met, the support stability requirements for the horizontal components are also easily met, and less working space is occupied below the horizontal components.

[0031] Example 2: This example differs from Example 1 in that, when non-prefabricated beams are used, corbels are formed at the four ends of the steel plates by welding. For non-prefabricated beam structures, the corbels at the four ends of the steel plates can be used to increase the support structure of the prefabricated beams for the composite slab, ensuring the stability of the support.

[0032] Example 3, the difference between this example and Example 1 is that Figure 6As shown, in step C, the clamp 5 is installed 40 cm below the top of the prefabricated column 1, and a steel truss with a height of 40 cm is made as the truss steel beam 10. The two ends of the truss steel beam 10 are placed on the top plate 6 at the top of the clamp 5. A connecting sleeve is pre-embedded at the top of the prefabricated column 1, and the supporting angle bracket 9 is connected to the top of the prefabricated column 1 through the pre-embedded connecting sleeve. When hoisting the prefabricated crossbeam 2, it is first hoisted to 20-50 cm above the prefabricated column 1. The position of the prefabricated crossbeam 2 is adjusted so that it is staggered with the column reinforcement of the prefabricated column 1 for easy positioning. After alignment, it is slowly lowered. The two ends of the prefabricated crossbeam 2 are placed on the supporting angle bracket 9, and the middle part of the prefabricated crossbeam 2 is placed on the truss steel beam 10. In step D, the composite plate is hoisted to 300 mm above the working layer, and after positioning, it is slowly lowered onto the steel plate 3. The reinforcement at the edge of the composite plate is staggered with the reinforcement of the prefabricated crossbeam 2. In this way, the truss steel beams 10 and the support angles 9 can provide more stable and reliable support for the precast beams 2, and no vertical support components are required under the precast beams 2, so the working space below is no longer occupied. The support of the composite slab is provided by the steel plate 3, which is supported by the diagonal support rods 4 on the precast columns 1. The load of the horizontal composite slab components and the upper cast-in-place concrete is distributed to the vertical components around to achieve an unsupported effect. In order to better utilize this force-bearing method to realize the application of the unsupported system, it is necessary to adjust the traditional concrete pouring sequence, changing the pouring method from the middle to the surrounding areas to pouring from the edge of the support structure to the center, so as to achieve structural load stability.

[0033] The above is only an embodiment of the present invention, and the common knowledge such as the specific technical solutions and / or characteristics in the solution are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the description can be used to interpret the content of the claims.

Claims

1. A support construction method for a frame structure building, characterized in that: The following steps are involved: A. Production of prefabricated columns with embedded connection structures; B. Fix the prefabricated columns to the construction ground, then connect the inclined supports to the embedded connection mechanism of each prefabricated column. The tops of multiple inclined supports are connected to a horizontal support plate, which is located at the center of the bottom of the construction floor room. C. Install a crossbeam between the tops of the precast columns, with a horizontal support plate resting against the beam waist. A clamp is fixed below the top of the precast column. A rubber layer is fixed to the inner wall of the clamp, which fits snugly against the precast column. A horizontal top plate is welded to the top of the clamp, and a truss steel beam is placed on the top plate. Connecting sleeves are embedded in the tops of the precast columns, and the connecting sleeves are connected to support angle brackets. The ends of the crossbeam are placed on the support angle brackets, and the middle of the crossbeam rests on the truss steel beam. The hoop in step C is composed of two hoop plates, which include vertical side panels. The upper left side of the side panel is integrally formed with a left wing panel perpendicular to it, and the lower right side of the side panel is integrally formed with a right wing panel perpendicular to it. The heights of the left wing panel and the right wing panel are both half the height of the side panel, and the lengths of the left wing panel and the right wing panel are the same as the side panel. The left wing panel and the right wing panel are located on the same side of the side panel. The lateral ends of the side panel, the left wing panel and the right wing panel are all welded with connecting ear plates, and two vertically parallel connecting holes are provided on the connecting ear plates. The connecting ear plates are inclined at a 45° angle to the side panel, the left wing panel or the right wing panel where they are located.

2. The support construction method for a frame structure building according to claim 1, characterized in that: The embedded connection structure in step A is located at one quarter of the height of the prefabricated column.

3. The support construction method for a frame structure building according to claim 1, characterized in that: The horizontal support plate used in step B is a cross-shaped steel plate.

4. The support construction method for a frame structure building according to claim 3, characterized in that: In step B, the top of the inclined support is hinged to the horizontal support plate.

5. The support construction method for a frame structure building according to claim 4, characterized in that: In step C, the four limbs of the horizontal support plate are pressed against the waist of the beam.

6. The support construction method for a frame structure building according to claim 5, characterized in that: In step C, a single vertical support column is applied at the bottom center of the horizontal support plate.

7. The support construction method for a frame structure building according to claim 3, characterized in that: When non-prefabricated beams are used, corbels are processed at the four ends of the horizontal support plate.

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