A modular building structure free of support and demolition formwork

Abstract

The present application relates to the field of building construction structures, and in particular to a modular formwork-free building structure, comprising a cast-in-place foundation, cast-in-place columns arranged on the cast-in-place foundation, a prefabricated main beam arranged at the upper end of the cast-in-place column, a prefabricated secondary beam arranged at the end of the prefabricated main beam, and a prefabricated double T-plate arranged on the beam body of the prefabricated main beam. The cast-in-place foundation is fixedly connected with a foundation plate and a corrugated pipe at the position where the cast-in-place column is arranged, and the corrugated pipe is inserted and fixed into the steel bars at the bottom of the cast-in-place column, so that the connection strength between the cast-in-place column and the cast-in-place foundation is greatly improved, so as to better adapt to the construction of large-span high-rise factory buildings.

Description

Technical Field

[0001] The present application relates to the field of building construction structures, and in particular to a modular formwork-free building structure. Background Art

[0002] The construction of factories generally adopts the method of cast-in-place concrete or steel structure. However, cast-in-place concrete has the disadvantages of cumbersome formwork construction and long construction period, while steel structure has high cost. Therefore, the construction method of on-site assembly of prefabricated concrete components has begun to be used in factory construction.

[0003] Existing prefabricated construction is generally constructed using prefabricated foundations, prefabricated columns and prefabricated beams, and cast-in-place operations are performed at the joints. At the same time, the floor slabs use high-bearing-capacity double T-plates, for example, an assembled concrete storage structure with announcement number CN219547985U.

[0004] Regarding the above-mentioned related technologies, for the construction of large-span high-rise factory buildings, the load borne by the columns is relatively large, and even if bolts and concrete pouring are used between prefabricated columns and prefabricated foundations, the load that can be borne is still limited, and it is difficult to apply it to the construction of large-span high-rise factory buildings. Summary of the invention

[0005] In order to better apply to the construction of large-span high-rise factories, the present application provides a modular formwork-free building structure.

[0006] The present application provides a modular formwork-free building structure that adopts the following technical solution.

[0007] A modular formwork-free building structure comprises a cast-in-place foundation, cast-in-place columns arranged on the cast-in-place foundation, a prefabricated main beam arranged on the upper end of the cast-in-place column, a prefabricated secondary beam arranged at the end of the prefabricated main beam, and a prefabricated double T-plate arranged on the beam body of the prefabricated main beam. The cast-in-place foundation is fixedly connected with a foundation plate and a corrugated pipe at the position where the cast-in-place column is arranged, and the corrugated pipe is used for the steel bars at the bottom of the cast-in-place column to extend into and be fixed.

[0008] By adopting the above technical solution, using cast-in-place foundations and cast-in-place columns, and coordinating the setting of foundation plates and corrugated pipes, the maximum load of cast-in-place columns is increased to better cope with the construction of large-span high-rise factories.

[0009] Optionally, the end of the prefabricated main beam is fixedly connected to a main beam end piece, and the end of the prefabricated secondary beam is fixedly connected to a bullfighting plate, and the bullfighting plate and the L-shaped surface of the main beam end piece are fixedly connected.

[0010] By adopting the above technical solution, a stable connection between the prefabricated secondary beam and the prefabricated main beam can be achieved.

[0011] Optionally, the cross-section of the prefabricated main beam is T-shaped, and the bottom flange of the prefabricated main beam is used for placing prefabricated double T-plates.

[0012] By adopting the above technical solution, the double T-board can be restricted to a certain extent in its own length direction, thereby improving the stability of the double T-board.

[0013] Optionally, the prefabricated main beam is provided with a partition beam close to the double T-plate, and a truss floor deck placed on the prefabricated main beam is provided on the side of the partition beam away from the double T-plate.

[0014] By adopting the above technical solution, according to the actual layout requirements, truss floor decking is used in spaces with smaller loads and smaller spans, such as bathrooms and other areas where no heavy equipment is placed, and double T-plates are used in locations with larger spans and heavier loads, thereby meeting the load requirements while reducing costs.

[0015] Optionally, the prefabricated main beam is fitted with a rail rod that can be plugged into the prefabricated secondary beam, the rail rod is slidably connected to a connecting plate along the length direction of the prefabricated main beam, and the end of the partition beam is fixedly connected to a partition end piece connected to the connecting plate.

[0016] By adopting the above technical solution, not all prefabricated main beams at different positions need to be equipped with partition beams, and the positions of the partition beams may also change. The movable connecting plates are used to connect and fix the partition end pieces, so that the partition beams can be fixed accordingly at different positions.

[0017] Optionally, the rail rod is fixedly connected with a rod rack, the connecting plate is slidably connected with a sliding rod, the sliding rod is fixedly connected with a positioning rack that can engage with the rod rack, and the connecting plate is rotatably connected with a positioning piece that is threadedly connected to the sliding rod.

[0018] By adopting the above technical solution, it is difficult for the connecting plate to be moved at will after its position is determined.

[0019] Optionally, a mounting opening for the rail rod to enter is opened on the bottom surface of the prefabricated secondary beam, and only one end of the mounting opening is directly opposite to the prefabricated main beam.

[0020] By adopting the above technical solution, after the prefabricated secondary beam is installed on the prefabricated main beam, the rail rod is placed corresponding to the installation opening.

[0021] Optionally, the rail rod is slidably connected to a resist column which prevents the rail rod from moving easily in the installation opening, and a column wedge is fixedly connected to one end of the rail rod inside the rail rod, and the column wedge abuts a push wedge slidably connected to the rail rod, and a middle wedge is slidably connected to the rail rod and can abut against an end of the push wedge away from the rail rod, and the rail rod is rotatably connected to a track fixing member which is threadedly connected to the middle wedge to enable the resist column to move outward from the rail rod.

[0022] By adopting the above technical solution, the rail rod is not easy to move randomly in the installation opening.

[0023] Optionally, the rail rod is embedded in the web of the prefabricated main beam at the position where the flange is set, and a pad for the abutment column to abut is placed in the installation opening.

[0024] By adopting the above technical solution, the rail rod is not likely to affect the close contact between the double T-plate and the web of the prefabricated main beam, and the setting of the pad block also makes it unnecessary for the support column to extend too long, thereby reducing the volume of the rail rod.

[0025] Optionally, a side plate is embedded in the vicinity of two adjacent double T plates, and an outer plate is fixedly connected to the vicinity of the two side plates.

[0026] By adopting the above technical solution, leakage between the two double T-plates is less likely to occur, thereby improving the overall load capacity.

[0027] In summary, the present application includes at least the following beneficial effects.

[0028] The use of cast-in-place foundations and cast-in-place columns, combined with the setting of foundation plates and corrugated pipes, increases the maximum load of cast-in-place columns to better cope with the construction of large-span high-rise factories. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the main structure of the building at the plane surrounded by two prefabricated main beams and two prefabricated secondary beams; Figure 2 It is a top view structural schematic diagram of the connection between the prefabricated main beam and the prefabricated secondary beam; Figure 3 It is a schematic diagram of the structure viewed from the side where the installation opening of the prefabricated secondary beam is set, with the partition beam removed to show the partition end piece; Figure 4 This is a schematic diagram of the structure of the rail rod in the main view and a partial cross-section of the connecting plate; Figure 5 It is a schematic diagram of the cross-sectional structure of the rail rod.

[0030] Explanation of the reference numerals in the accompanying drawings: 1. Cast-in-place foundation; 2. Cast-in-place column; 3. Precast main beam; 31. Middle wedge; 32. Track member; 33. Spacer; 34. Side plate; 35. Outer plate; 36. Embedded opening; 4. Precast secondary beam; 41. Partition end piece; 42. Rod rack; 43. Slide rod; 44. Positioning rack; 45. Positioning piece; 46. Installation opening; 47. Column support; 48. Column wedge; 49. Push wedge; 5. Double T plate; 52. Foundation plate; 53. Corrugated pipe; 54. Main beam end piece; 55. Ox-carrying plate; 56. Partition beam; 57. Truss floor deck; 58. Track rod; 59. Connecting plate. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings.

[0032] The present application embodiment discloses a modular formwork-free building structure, referring to Figure 1 , including a cast-in-place foundation 1, on which vertical cast-in-place columns 2 are evenly cast, and a number of foundation plates 52 and corrugated pipes 53 are evenly and fixedly connected at positions corresponding to the cast-in-place columns 2. The bottom steel bars of the cast-in-place foundation 1 can be inserted into the corrugated pipe 53, and grouting is performed in the corrugated pipe 53 to ensure a tight connection between the cast-in-place columns 2 and the corrugated pipe 53.

[0033] Reference Figure 1 and Figure 2 A horizontal precast main beam 3 is placed on the upper end of the cast-in-place column 2. The cross section of the precast main beam 3 is T-shaped. The flange of the precast main beam 3 is located at the bottom of the web. The end of the precast main beam 3 is placed on the upper end of the cast-in-place column 2. A horizontal precast secondary beam 4 is placed on the flange of the precast main beam 3. The length direction of the precast secondary beam 4 is perpendicular to the length direction of the precast main beam 3. The length of the precast main beam 3 is greater than the precast secondary beam 4. An embedded part opening 36 is formed at the end of the precast main beam 3 at the vertical surface of the precast secondary beam 4. A main beam end piece 54 is embedded in the embedded part opening 36. The end of the precast secondary beam 4 is fixedly connected with a bull saddle plate 55 by means of bolts and nuts. The bull saddle plate 55 and the L-shaped surface of the main beam end piece 54 are in contact and welded to fix the position between the precast secondary beam 4 and the precast main beam 3.

[0034] Reference Figure 1 , a number of horizontal double T-plates 5 are placed between two adjacent precast main beams 3. The double T-plates 5 are located on the flanges of the precast main beams 3 and close to the webs of the precast main beams 3. The length direction of the double T-plates 5 is perpendicular to the length direction of the precast main beams 3. The length direction sides of the two adjacent double T-plates 5 are close to each other. Side plates 34 are embedded between the length direction sides of the two adjacent double T-plates 5. The two adjacent side plates 34 are welded and fixed. The outer plates 35 are attached above the welding points of the two adjacent side plates 34. The two length direction sides of the outer plates 35 are welded to the two side plates 34 one by one. A partition beam 56 is provided between two adjacent precast main beams 3 of a part. The length direction of the partition beam 56 is perpendicular to the length direction of the precast main beams 3. The partition beam 56 is close to the double T-plates 5. A truss floor deck 57 is provided on the side of the partition beam 56 away from the double T-plates 5. The double T-plates 5 are suitable for areas with large spans and large loads, while the truss floor deck 57 is the opposite.

[0035] In addition, a layer of concrete with a thickness of about 80 mm can be poured on the double T-plate 5, the truss floor deck 57, the precast main beam 3, the precast secondary beam 4 and the partition beam 56 to improve the flatness of the floor slab and to transfer the load on the floor slab more evenly to the double T-plate 5, the truss floor deck 57, the precast main beam 3, the precast secondary beam 4 and the partition beam 56, and no formwork is required during the pouring process.

[0036] Reference Figure 3 and Figure 4 The bottom of the web of the precast main beam 3 is sleeved with a rail rod 58, which is embedded in the precast main beam 3 along the width direction of the precast main beam 3, so that the double T plate 5 will not contact the rail rod 58. The rail rod 58 is slidably connected to a connecting plate 59 facing the vertical surface outside the precast main beam 3, and the connecting plate 59 moves along the length direction of the rail rod 58. The end of the partition beam 56 is pre-embedded with a partition end piece 41, which is sleeved on the connecting plate 59 vertically downward, and the partition end piece 41 is detachably connected to the connecting plate 59 using bolts and nuts. The rail rod 58 is fixedly connected to a rod rack 42 with the same length direction, and the connecting plate 59 is slidably connected to a sliding rod 43 that can approach or move away from the rod rack 42. The sliding rod 43 is fixedly connected to the end of the rod rack 42, and the positioning rack 44 can be engaged with the rod rack 42, so that the connecting plate 59 is not easy to move again. The connecting plate 59 is rotatably connected with a positioning member 45 which is threadedly connected to the sliding rod 43 . The positioning member 45 is embedded in the surface of the connecting plate 59 facing the prefabricated secondary beam 4 .

[0037] Reference Figure 3 and Figure 5 The bottom side of the precast secondary beam 4 is provided with an installation opening 46, one end of the installation opening 46 is directly opposite to the upper surface of the flange of the precast main beam 3 and the other end is away from the precast main beam 3, and the end of the rail rod 58 in the length direction is placed in the installation opening 46. The rail rod 58 is slidably connected with a stopper 47 at both ends in the length direction, and a cushion block 33 located on the upper surface of the flange of the precast main beam 3 is placed in the installation opening 46, and the stopper 47 moves along the width direction of the precast main beam 3 to abut against the cushion block 33. The abutment column 47 is located in the rail rod 58, and one end thereof is fixedly connected with a column wedge 48. The column wedge 48 abuts against a push wedge 49 which is slidably connected to the inside of the rail rod 58 along the length direction of the rail rod 58. The push wedge 49 abuts against a middle wedge 31 at one end away from the column wedge 48. The middle wedge 31 is slidably connected to the inside of the rail rod 58 along the width direction of the prefabricated main beam 3. The rail rod 58 is rotatably connected with a track fixing member 32 which is threadedly connected to the middle wedge 31. The track fixing member 32 is embedded in the rail rod 58 so that the connecting plate 59 is not easy to abut against the track fixing member 32 during the movement. The track fixing member 32 is rotated to realize the installation and fixation of the rail rod 58.

[0038] The implementation principle of a modularized formwork-free building structure of the embodiment of the present application is as follows: the cast-in-place column 2 is effectively connected to the cast-in-place foundation 1 by means of pouring, foundation sheet 52 and corrugated pipe 53 to enhance the effective load support of the cast-in-place column 2. After the cast-in-place column 2 is cast, the prefabricated main beam 3 is suspended to the upper end of the cast-in-place column 2, and then the prefabricated secondary beam 4 is connected to the prefabricated main beam 3, and then the rail rod 58 and the corresponding prefabricated main beam 3 are installed, and then the partition beam 56 is fixed, and then the double T plate 5 and the truss floor deck 57 are placed, and finally the 80mm concrete layer is poured.

[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A modular formwork-free building structure, characterized in that: The invention comprises a cast-in-place foundation (1), a cast-in-place column (2) arranged on the cast-in-place foundation (1), a prefabricated main beam (3) arranged at the upper end of the cast-in-place column (2), a prefabricated secondary beam (4) arranged at the end of the prefabricated main beam (3), and a prefabricated double T-plate (5) arranged on the beam body of the prefabricated main beam (3). A foundation plate (52) and a corrugated pipe (53) are fixedly connected to the cast-in-place foundation (1) at a position where the cast-in-place column (2) is arranged, and the corrugated pipe (53) is inserted into and fixed to the steel bars at the bottom of the cast-in-place column (2).

2. A modular formwork-free building structure according to claim 1, characterized in that: The end of the prefabricated main beam (3) is fixedly connected to a main beam end piece (54), the end of the prefabricated secondary beam (4) is fixedly connected to a bulldozer plate (55), and the bulldozer plate (55) and the L-shaped surface of the main beam end piece (54) are fixedly connected.

3. A modular formwork-free building structure according to claim 1, characterized in that: The prefabricated main beam (3) has a T-shaped cross section, and the bottom flange of the prefabricated main beam (3) is used for placing the prefabricated double T-plate (5).

4. A modular formwork-free building structure according to claim 3, characterized in that: The prefabricated main beam (3) is provided with a partition beam (56) close to the double T-plate (5), and a truss floor deck (57) placed on the prefabricated main beam (3) is provided on the side of the partition beam (56) away from the double T-plate (5).

5. A modular formwork-free building structure according to claim 4, characterized in that: The prefabricated main beam (3) is fitted with a rail rod (58) that can be plugged into the prefabricated secondary beam (4); the rail rod (58) is slidably connected to a connecting plate (59) along the length direction of the prefabricated main beam (3); and a partition end piece (41) connected to the connecting plate (59) is fixedly connected to the end of the partition beam (56).

6. A modular formwork-free building structure according to claim 5, characterized in that: The rail rod (58) is fixedly connected to a rod rack (42), the connecting plate (59) is slidably connected to a slide rod (43), the slide rod (43) is fixedly connected to a positioning rack (44) capable of meshing with the rod rack (42), and the connecting plate (59) is rotatably connected to a positioning member (45) threadedly connected to the slide rod (43).

7. The modular formwork-free building structure according to claim 5, characterized in that: The bottom surface of the prefabricated secondary beam (4) is provided with an installation opening (46) for the rail rod (58) to enter, and only one end of the installation opening (46) is directly opposite to the prefabricated main beam (3).

8. A modular formwork-free building structure according to claim 7, characterized in that: The rail rod (58) is slidably connected to a support column (47) that can prevent the rail rod (58) from moving freely in the installation opening (46); one end of the rail rod (58) located in the rail rod (58) is fixedly connected to a column wedge block (48); the column wedge block (48) abuts against a push wedge block (49) slidably connected to the rail rod (58); a middle wedge block (31) is slidably connected to the rail rod (58) and can abut against one end of the push wedge block (49) away from the rail rod (58); the rail rod (58) is rotatably connected to a track fixing member (32) that is threadedly connected to the middle wedge block (31) so that the support column (47) can move outward of the rail rod (58).

9. The modular formwork-free building structure according to claim 5, characterized in that: The rail rod (58) is embedded in the position where the flange of the web of the prefabricated main beam (3) is provided, and a cushion block (33) for abutting the abutment column (47) is placed in the installation opening (46).

10. The modular formwork-free building structure according to claim 1, characterized in that: A side plate (34) is embedded in the vicinity of two adjacent double T plates (5), and an outer plate (35) is fixedly connected to the vicinity of the two side plates (34).

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