Prefabricated column, cast-in-place beam and floor support plate combined structure and construction method

Abstract

The invention relates to a prefabricated column, cast-in-place beam and floor support plate combined structure and a construction method, and relates to the technical field of building construction, the prefabricated column, cast-in-place beam and floor support plate combined structure is arranged on the construction ground, and a supporting structure comprises a plurality of prefabricated columns arranged at the design positions of the construction ground in a supported mode and a beam plate supporting frame erected beside the prefabricated columns; according to the cast-in-place beam formwork arranged between every two adjacent prefabricated columns, the split bolts are arranged on the cast-in-place beam to be matched with the pull rods, in the tightening process of the split bolts, the pull rods are gradually driven to be close to the cast-in-place beam, reinforcing ribs are extruded, the reinforcing ribs are tightly attached to the two sides of the cast-in-place beam, and therefore the side faces of the cast-in-place beam are shored and reinforced; the situation that the two sides of the cast-in-place beam are extruded by concrete to expand outwards when the concrete is poured is avoided, the trusses and the steel pipes are arranged between the cast-in-place beam and the floor bearing plate, the floor bearing plate can be supported, and the bearing performance of a construction area on the floor bearing plate is improved.

Description

Technical Field

[0001] This invention relates to the field of building construction, and specifically to a precast column, cast-in-place beam, and floor decking combination structure and construction method. Background Technology

[0002] Currently, prefabricated structures are widely used in building construction. However, conventionally assembled structural frames involve complex non-conventional structural procedures during construction, making installation difficult. Construction workers often lack sufficient understanding of these procedures, leading to errors in installation placement and requiring rework on-site. This increases construction time and can pose safety hazards. Therefore, measures are needed to address the challenges of difficult installation and rework caused by errors in procedure placement. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a precast column, cast-in-place beam, and floor decking combination structure and construction method, which solves the problems of high installation difficulty and rework caused by incorrect process overlap.

[0004] The technical solution to achieve the above objective is: a precast column, cast-in-place beam, and floor slab composite structure, installed on the construction ground, wherein the composite structure includes: Multiple precast columns are erected at the designed locations on the construction ground. A cast-in-place beam formwork is set between two adjacent precast columns. The cast-in-place beam formwork is supported by a beam and slab support frame placed next to the precast pile. A casting space is formed inside the cast-in-place beam formwork. A floor deck is placed on the beam support frame, and the floor deck is set close to the cast-in-place beam formwork. Concrete is poured onto the floor deck and into the cast-in-place beam formwork to form an integral cast-in-place beam and floor deck composite layer.

[0005] A further improvement of the technical solution of the present invention is that: when the bottom of the cast-in-place beam corresponds to the top of the precast column, at least one bottom reinforcement bar is provided in the cast-in-place beam formwork at the part corresponding to the bottom of the beam, and the end of the bottom reinforcement bar near the precast column is inclined upward and extends to the top of the precast column.

[0006] A further improvement of the technical solution of the present invention is that: when the bottom of the cast-in-place beam corresponds to the upper part of the precast column, a rebar is installed on the upper part of the precast column, and part of the rebar is located inside the corresponding cast-in-place beam formwork.

[0007] A further improvement of the technical solution of the present invention is that the formwork for the cast-in-place beam is set with the opening facing upward.

[0008] A further improvement of the technical solution of the present invention is that the top sleeve of the cast-in-place beam formwork has multiple tie rods.

[0009] A further improvement of the technical solution of the present invention is that the tie rod is arranged in an inverted U-shape.

[0010] A further improvement of the technical solution of the present invention is that the tie rods are arranged at intervals.

[0011] A construction method for a precast column, cast-in-place beam, and floor deck composite structure includes the following steps: Provide precast columns and install them at the designed locations; A beam and slab support frame is erected next to the precast columns; A cast-in-place beam formwork is set between two adjacent precast columns, and the cast-in-place beam formwork is placed on the beam and slab support frame; Provide floor decking, and place the floor decking on the beam support frame; Concrete is poured into the formwork of the cast-in-place beam and onto the floor slab to form a composite layer of cast-in-place beam and floor slab.

[0012] A further improvement to the technical solution of this invention is that it also includes: When the bottom of the cast-in-place beam corresponds to the top of the precast column, at least one bottom reinforcement bar is provided in the cast-in-place beam formwork at the position corresponding to the bottom of the beam, and the end of the bottom reinforcement bar near the precast column is inclined upward and extends to the top of the precast column. Rebar is installed on the precast column, and some of the rebar is placed inside the corresponding cast-in-place beam.

[0013] A further improvement to the technical solution of the present invention is that it also includes setting a bottom formwork 50cm on each side of the cast-in-place beam, and laying the floor decking on the bottom formwork.

[0014] By utilizing the above technical solution, the technical effects achieved by the present invention compared to the prior art are as follows: This invention provides a combined structure and construction method for precast columns, cast-in-place beams, and floor decking. By installing tie bolts and tie rods on the cast-in-place beams, the tie rods are gradually moved closer to the cast-in-place beams during the tightening of the tie bolts, compressing the reinforcing ribs and making them tightly adhere to both sides of the cast-in-place beams. This achieves lateral support and reinforcement of the cast-in-place beams, preventing them from expanding outwards due to concrete compression during pouring. Furthermore, trusses and steel pipes are installed between the cast-in-place beams and the floor decking to support the floor decking and improve the load-bearing capacity of the floor decking in the construction area.

[0015] By placing bottom reinforcement bars in the inner wall of the cast-in-place beam and connecting them to the precast columns, the reinforcement bars, together with the bottom reinforcement bars, can provide support for the cast-in-place beam after the concrete has solidified, making the connection between the cast-in-place beam and the precast columns more stable. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of a precast column, cast-in-place beam, and floor decking combination structure and construction method according to the present invention.

[0017] Figure 2 This is a schematic diagram illustrating the connection between the cast-in-place beam and the floor deck in the precast column, cast-in-place beam, and floor deck composite structure and construction method of the present invention.

[0018] Figure 3 This is a cross-sectional schematic diagram of the connection between the precast column and the cast-in-place beam in the precast column, cast-in-place beam, and floor decking composite structure and construction method of the present invention.

[0019] Figure 4 This is a three-dimensional schematic diagram of the connection between precast columns and cast-in-place beams in a precast column, cast-in-place beam, and floor decking composite structure and construction method according to the present invention.

[0020] Figure 5 This is a three-dimensional schematic diagram of the connection between the cast-in-place beam and the floor decking in the precast column, cast-in-place beam, and floor decking composite structure and construction method of the present invention.

[0021] Figure 6 This is a schematic diagram of the connection between the cast-in-place beam and the support frame in the precast column, cast-in-place beam, and floor decking composite structure and construction method of the present invention.

[0022] In the diagram: 1. Precast column; 2. Beam and slab support frame; 3. Cast-in-place beam; 4. Floor deck; 5. Tie rod; 6. Reinforcing bar; 7. Truss; 8. Tie bolt; 9. Rebar anchoring; 10. Bottom reinforcement of beam. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] This invention provides a precast column, cast-in-place beam, and floor decking composite structure and construction method. This structure has the advantage of limiting the two sides of the cast-in-place beam through bolts and tie rods, thus preventing deformation of the cast-in-place beam. The following describes the precast column, cast-in-place beam, and floor decking composite structure and construction method.

[0025] See Figure 1 This image shows a three-dimensional schematic diagram of a precast column, cast-in-place beam, and floor decking composite structure and construction method according to the present invention. The following is in conjunction with... Figures 1 to 6 The structure of the precast column, cast-in-place beam, floor decking combination structure and construction method of the present invention are described.

[0026] See Figure 1 , Figure 2This invention provides a precast column, cast-in-place beam, and floor decking composite structure, which is installed on the construction ground. The composite structure includes: precast column 1, beam-slab support frame 2, cast-in-place beam 3, and floor decking 4. The precast column 1 is supported at the designed position on the construction ground, and there are multiple precast columns 1. The cast-in-place beam formwork is set between two adjacent precast columns 1. The cast-in-place beam formwork is supported by the beam-slab support frame 2 placed next to the precast column 1. A casting space is formed inside the cast-in-place beam formwork. The floor decking 4 is placed on the beam-slab support frame 2 and is set close to the cast-in-place beam formwork. Concrete is poured onto the floor decking 4 and into the cast-in-place beam formwork to form an integral cast-in-place beam 3 and floor decking composite layer.

[0027] Better, such as Figure 1 , Figure 2 As shown, by connecting the cast-in-place beam formwork to adjacent precast columns 1, the positions of both ends of the cast-in-place beam formwork are defined. Furthermore, by connecting multiple cast-in-place beam formworks to different precast columns 1 and enclosing each other, a construction area for connecting the floor deck 4 is formed. This construction area can be changed according to the regular shape formed by connecting the cast-in-place beam formworks. Generally, regular areas such as squares and rectangles can be directly connected using precast columns 1, while irregular areas such as triangles and rectangles are cast on-site using cast-in-place beam formworks according to their different shapes. Therefore, the size and shape of the floor deck 4 need to be changed accordingly based on the shape of the construction area.

[0028] Furthermore, during the support process, the beam and slab support frame 2 needs to limit the top support height according to the lowest end of the cast-in-place beam formwork and the floor deck 4, so that the beam and slab support frame 2 can be supported on cast-in-place beam formwork and structural beams of different heights. In addition, multiple steel pipes can be added between the beam and slab support frame 2 and the floor deck 4 to provide a better support effect between two adjacent cast-in-place beam formworks, so that the floor deck 4 is more stable after installation and improves the safety of unconventional structure construction.

[0029] See Figure 1 , Figure 2 , Figure 6In one specific embodiment of the present invention, when the bottom of the cast-in-place beam 3 corresponds to the top of the precast column 1, at least one bottom reinforcement bar 10 is provided in the cast-in-place beam template at the corresponding bottom position of the beam. The bottom reinforcement bar 10 is inclined upward at one end near the precast column 1 and extends to the top of the precast column 1. When the bottom of the cast-in-place beam 3 corresponds to the top of the precast column 1, a reinforcing bar 9 is provided in the top part of the precast column 1. Part of the reinforcing bar 9 is located in the corresponding cast-in-place beam template. The cast-in-place beam template is provided with multiple through holes, and tie bolts 8 passing through the corresponding through holes are connected to the cast-in-place beam template. Multiple reinforcing bars 6 are provided on the outer surface of the cast-in-place beam template. Tie rods 5 are provided on the side of the reinforcing bars 6 away from the cast-in-place beam 3. The tie rods 5 are connected to the tie bolts 8. By pulling the tie bolts 8 toward the cast-in-place beam 3, the tie rods 5 are tightly attached to the reinforcing bars 6, so as to tighten the reinforcing bars 6 to the outer surface of the cast-in-place beam 3. The cast-in-place beam template is set with the opening facing upward.

[0030] Furthermore, such as Figure 1 , Figure 2 , Figure 6 As shown, the upward-facing end of the cast-in-place beam formwork extends towards the floor slab 4 to form a wing plate, which overlaps the top of the beam-slab support frame 2. This allows the cast-in-place beam formwork to be hung on the beam-slab support frame 2 when the beam-slab support frame 2 supports the cast-in-place beam formwork, thereby further improving the stability of the cast-in-place beam formwork in the structure.

[0031] Furthermore, by installing tie bolts 8 on the inner wall of the cast-in-place beam formwork and connecting the tie bolts 8 to the corresponding tie rods 5, during the tightening of the tie bolts 8, the tie rods 5 on both sides of the cast-in-place beam formwork are gradually pulled closer to the cast-in-place beam formwork. During the approach process, the reinforcing ribs 6 are squeezed, so that the reinforcing ribs 6 are tightly attached to both sides of the cast-in-place beam formwork, thereby achieving side support and reinforcement of the cast-in-place beam formwork and preventing the cast-in-place beam formwork from expanding outward due to the compression of concrete on both sides when pouring concrete.

[0032] Furthermore, such as Figure 3 , Figure 4 As shown, by placing the bottom reinforcement 10 of the beam in the inner wall of the cast-in-place beam formwork and connecting the anchoring reinforcement 9 on the precast column 1, the anchoring reinforcement 9, together with the bottom reinforcement 10 of the beam, can provide support for the cast-in-place beam 3 after the concrete poured in the cast-in-place beam formwork has solidified, making the connection between the cast-in-place beam 3 and the precast column 1 more stable.

[0033] Furthermore, after the cast-in-place beam formwork is installed, when the precast column 1 is aligned with the bottom of the cast-in-place beam 3 (i.e., there is no difference in beam bottom elevation), the top elevation of the precast column 1 on that floor is confirmed according to the lowest beam bottom elevation. The beam reinforcement on both sides of the precast column 1 should be continuous if possible; if the specifications differ significantly and cannot be continuous, it should be disconnected and anchored within the precast column 1. The anchorage length should meet the specifications and design requirements. If it is found that the bottom of one side of the cast-in-place beam 3 is lower than the top of the precast column 1, the structural design should be contacted immediately to review the stress situation, and the reinforcement 9 and bottom beam 10 should be increased accordingly. When the cross-section of the cast-in-place beam formwork... When a height difference occurs, the elevation of the cast-in-place beam formwork is lowered if a slope is available. If a slope is not available, the elevation of the cast-in-place beam formwork is lowered according to its lowest elevation. In this case, when one side of the cast-in-place beam formwork is lower than the precast column 1, the two ends of the bottom reinforcement 10 of the beam need to extend out of the cast-in-place beam formwork and overlap the precast column 1. After the concrete is poured, the concrete solidifies and can bury and fix the two ends of the bottom reinforcement 10. This achieves the effect of fixing the cast-in-place beam formwork by restricting the bottom reinforcement 10. The reinforcement 9 and the bottom reinforcement 10 can be increased or decreased according to the structural design.

[0034] Better, such as Figure 1 , Figure 2 , Figure 5 As shown, by setting multiple trusses 7 at the bottom of the floor deck 4, the floor deck 4 and the trusses 7 are placed on the beam support frame 2. The trusses 7 can cooperate with the steel pipe to support the floor deck 4, thereby improving the load-bearing capacity of the floor deck 4 in the construction area.

[0035] See Figure 6 In one specific embodiment of the present invention, the top sleeve of the cast-in-place beam formwork has multiple tie rods, which are arranged in an inverted U-shape and spaced apart.

[0036] Furthermore, such as Figure 6 As shown, by setting multiple tie rods at the top of the cast-in-place beam formwork, the top two sides of the cast-in-place beam formwork are fixed to prevent the two sides of the cast-in-place beam formwork from being misaligned during pouring. They can also work together with tie bolts 8 and tie rods 5 to act on the cast-in-place beam formwork.

[0037] A construction method for a precast column, cast-in-place beam, and floor deck composite structure includes the following steps: Provide precast column 1, and install the provided precast column 1 at the designed location; A beam and slab support frame 2 is erected next to the precast column 1; Set up cast-in-place beam formwork between two adjacent precast columns 1, and place the cast-in-place beam formwork on the beam and slab support frame 2; Provide floor decking 4, and place floor decking 4 on beam support frame 2; After the formwork for the cast-in-place beams and the floor deck 4 are laid and completed, the beam reinforcement, beam-column joint reinforcement, and slab reinforcement are tied in sequence. When there is a height deviation between the cast-in-place beam formwork 4 and the end of the precast column 1, it is necessary to install rebar 6 on the precast column 1 and extend the other end of the rebar 6 into the cast-in-place beam formwork. The bottom rebar 10 of the beam is placed in the cast-in-place beam formwork, and the other end of the bottom rebar 10 is tilted upward and extended to overlap the top of the precast column 1. Concrete is poured into the formwork of the cast-in-place beam and onto the floor slab 4 to form a composite layer of the cast-in-place beam 3 and the floor slab. Set a bottom formwork 50cm on each side of the cast-in-place beam, and lay the floor deck 4 on the bottom formwork.

[0038] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A composite structure of precast columns, cast-in-place beams, and floor slabs, installed on a construction surface, characterized in that: The combined structure comprises: a plurality of precast columns arranged at the design position of the construction ground; a cast-in-situ beam formwork arranged between two adjacent precast columns, the cast-in-situ beam formwork being supported by a beam slab support frame arranged beside the precast columns, and a pouring space being formed in the cast-in-situ beam formwork; a floor support plate arranged on the beam slab support frame and close to the cast-in-situ beam formwork, and an integrally formed cast-in-situ beam and floor slab composite layer being formed by pouring concrete into the cast-in-situ beam formwork and onto the floor support plate.

2. The precast column, cast-in-place beam, and deck slab composite structure according to claim 1, wherein: At least one beam bottom bar is arranged in the cast-in-situ beam formwork at a position corresponding to the bottom of the cast-in-situ beam, and an end of the beam bottom bar close to the precast column is inclined upward and extends to the top of the precast column.

3. The precast column, cast-in-place beam, and deck slab composite structure according to claim 2, wherein: A bar is arranged on the upper part of the precast column, and part of the bar is arranged in the corresponding cast-in-situ beam formwork.

4. The precast column, cast-in-place beam, and deck slab composite structure according to claim 1, wherein: The cast-in-situ beam formwork is arranged with an opening upward.

5. The precast column, cast-in-place beam, and deck slab composite structure according to claim 1, wherein: A plurality of tie bars are arranged in the top of the cast-in-situ beam formwork.

6. The precast column, cast-in-place beam, deck slab composite structure according to claim 5, characterized in that: The tie bars are arranged in an inverted U shape.

7. The precast column, cast-in-place beam, deck slab composite structure according to claim 5, characterized in that: The tie bars are arranged in a spaced manner.

8. The construction method of a precast column, cast-in-place beam and floor deck composite structure according to claim 1, characterized in that: The method comprises the following steps: providing precast columns, and arranging the provided precast columns at the design position; arranging a beam slab support frame beside the precast columns; arranging a cast-in-situ beam formwork between two adjacent precast columns, and arranging the cast-in-situ beam formwork on the beam slab support frame; providing a floor support plate, and arranging the floor support plate on the beam slab support frame; pouring concrete into the cast-in-situ beam formwork and onto the floor support plate to form a cast-in-situ beam and floor slab composite layer.

9. The construction method of a precast column, cast-in-place beam and floor deck composite structure according to claim 8, characterized in that: The method further comprises: arranging at least one beam bottom bar in the cast-in-situ beam formwork at a position corresponding to the bottom of the cast-in-situ beam, and inclining an end of the beam bottom bar close to the precast column upward and extending to the top of the precast column; arranging a bar on the precast column, and arranging part of the bar in the corresponding cast-in-situ beam formwork.

10. The construction method of a precast column, cast-in-place beam and floor deck composite structure according to claim 8, characterized in that: The method further comprises: arranging a plate bottom form on both sides of the cast-in-situ beam by 50 cm, and arranging the corresponding floor support plate on the plate bottom form.

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