Fabricated building structure

Abstract

The utility model relates to the technical field of assembly type buildings, in particular to an assembly type building structure which comprises a column body common part, a beam column joint core area, a prefabricated main beam, a cast-in-place secondary beam and a support-free floor bearing plate. Meanwhile, the cast-in-place operation of the connecting part is not influenced, so that the construction period is shortened; according to the structure, the precast beams are adopted as the main beams, the cast-in-place beams are adopted as the secondary beams, and it is guaranteed that rebars in the core area of the beam-column joint can be bound smoothly. And through the steel bar trusses arranged in the support-free floor bearing plate, the bending moment load borne by the floor slab is greatly improved, and therefore the floor bottom support-free effect is achieved. By means of the rectangular sections arranged at the two ends of the prefabricated main beam and the I-shaped section arranged in the middle of the prefabricated main beam, the structure saves materials while guaranteeing beam stress, and therefore economic benefits of the structure are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled buildings, in particular to an assembled building structure. Background Art

[0002] The existing prefabricated systems are divided into two categories. The first category is that both the vertical structure and the horizontal structure are prefabricated components, and the connection method between the prefabricated components is wet connection or dry connection. This type of prefabricated technology has two main disadvantages. First, there are more hoisting times during construction, and the cost of using prefabricated components for vertical structures is relatively high, and it cannot save construction time. Second, the node connection strength between prefabricated components is not equivalent to cast-in-place, and there are weak points.

[0003] The second type of prefabricated system is that the vertical structure and beams are cast in place, the slabs are composite slabs, and a layer of concrete is cast on the slabs. The disadvantages of this prefabricated system are: 1. The cast-in-place volume is large, the amount of steel bar binding work is large, and the single-layer construction period is long; 2. The number of bottom supports of the composite slab is not much different from that of the cast-in-place structure, which is not conducive to the interweaving of subsequent processes and saving construction time; 3. There is a conflict between the composite slab reinforcement and the cast-in-place beam reinforcement. The composite slab reinforcement is prone to yield failure during construction.

[0004] For example, an assembled building structure disclosed in the authorization announcement number CN217602136U is characterized by comprising a base module, a beam docking module, a beam erection module and a building module; wherein the base module comprises a plurality of bases; the beam erection module comprises a plurality of beams; the beams are fixedly mounted on the bases through the beam docking modules; the building modules are mounted on the wooden beams to form the target building shape. It can achieve the effect of rapid assembly. However, the prefabricated components of this structure have a large deadweight and low rigidity, and cannot be applied to large-span buildings. There are limitations. For this reason, we propose an assembled building structure, which solves the problems of heavy deadweight and low rigidity of the structure, improves the integrity and rigidity of the structure, saves construction costs, and expands the applicability of the structure. Utility Model Content

[0005] The purpose of the utility model is to provide a prefabricated building structure to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An assembled building structure comprises an ordinary part of a column body, a core area of ​​a beam-column joint, a prefabricated main beam, a cast-in-place secondary beam and a support-free floor deck, wherein the ordinary part of the column body is cast with ordinary concrete, the core area of ​​the beam-column joint is located at the junction of the prefabricated main beam and the cast-in-place secondary beam, the core area of ​​the beam-column joint and the prefabricated main beam are cast with high-strength concrete, and the cast-in-place secondary beam is cast with ordinary concrete.

[0008] Preferably, the support-free floor deck is cast using high-strength concrete and has a thickness of 5 cm.

[0009] Preferably, the prefabricated main beam comprises a T-shaped flange, an I-shaped section, a rectangular section and high-strength steel bars, and the I-shaped section is arranged in the middle of the prefabricated main beam.

[0010] Preferably, the rectangular cross-section is arranged at both ends of the prefabricated main beam.

[0011] Preferably, the rectangular cross-section range is 1.5 times the height of the prefabricated main beam, and the rectangular cross-section is cast with ultra-high-strength concrete.

[0012] Preferably, the high-strength steel bars are fixedly installed inside the prefabricated main beam and are designed to be continuous throughout the entire length.

[0013] Preferably, the support-free floor deck comprises a steel truss and a concrete base plate, and the steel truss is fixedly installed inside the concrete base plate.

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

[0015] 1. This prefabricated building structure, through the setting of the core area of ​​the beam-column node, can effectively ensure the strength of the core area during use, and at the same time can ensure that the cast-in-place operation of the connection part is not affected, thereby saving construction time; the main beam of the structure adopts prefabricated beams and the secondary beam adopts cast-in-place beams, which ensures that the steel bars in the core area of ​​the beam-column node can be smoothly tied. The steel trusses set inside the support-free floor slab greatly improve the floor slab's ability to withstand bending moment loads, thereby achieving the support-free effect at the bottom of the floor.

[0016] 2. This prefabricated building structure adopts the process of pouring ordinary concrete in the ordinary parts of the column body and high-strength concrete in the core area of ​​the beam-column joint, which not only reduces the cost but also ensures the connection strength between the prefabricated main beam and the cast-in-place secondary beam. The combined effect of high-strength steel bars and high-strength concrete inserted inside the prefabricated main beam not only reduces the deadweight of the beam but also increases the stiffness of the beam, thereby achieving the large span effect of the structure and ensuring the earthquake resistance requirements. The rectangular cross-sections set at both ends of the prefabricated main beam and the I-shaped cross-section set in the middle of the prefabricated main beam ensure that the structure saves materials while ensuring the stress of the beam, thereby improving the economic benefits of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the prefabricated main beam structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the support-free floor deck of the utility model;

[0020] Figure 4 It is a schematic diagram of the partial structure of the prefabricated main beam section of the utility model.

[0021] In the figure: 100, ordinary part of the column; 101, core area of ​​the beam-column joint; 102, precast main beam; 103, cast-in-place secondary beam; 104, support-free floor decking; 200, T-shaped flange; 201, I-shaped section; 202, rectangular section; 203, high-strength steel bars; 300, steel truss; 301, concrete base plate. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-Figure 4 As shown, a technical solution provided by the utility model:

[0024] An assembled building structure includes an ordinary part 100 of a column shaft, a core area 101 of a beam-column joint, a precast main beam 102, a cast-in-place secondary beam 103 and a support-free floor deck 104, wherein the ordinary part 100 of the column shaft is cast with ordinary concrete, the core area 101 of the beam-column joint is located at the junction of the precast main beam 102 and the cast-in-place secondary beam 103, the core area 101 of the beam-column joint and the precast main beam 102 are both cast with high-strength concrete, and the cast-in-place secondary beam 103 is cast with ordinary concrete.

[0025] In this embodiment, preferably, the support-free floor decking slab 104 is cast using high-strength concrete, and its thickness is 5 cm.

[0026] In this embodiment, preferably, the prefabricated main beam 102 includes a T-shaped flange 200 , an I-shaped section 201 , a rectangular section 202 and high-strength steel bars 203 , and the I-shaped section 201 is arranged in the middle of the prefabricated main beam 102 .

[0027] In this embodiment, preferably, the rectangular cross-section 202 is provided at both ends of the prefabricated main beam 102 .

[0028] In this embodiment, preferably, the rectangular cross section 202 has a range of 1.5 times the height of the prefabricated main beam 102, and the rectangular cross section 202 is cast with ultra-high-strength concrete.

[0029] In this embodiment, preferably, the high-strength steel bars 203 are fixedly installed inside the prefabricated main beam 102 and are designed to be continuous throughout the entire length.

[0030] In this embodiment, preferably, the support-free floor deck 104 includes a steel truss 300 and a concrete bottom plate 301 , and the steel truss 300 is fixedly installed inside the concrete bottom plate 301 .

[0031] When a prefabricated building structure of this embodiment is used, the core area 101 of the beam-column node is set, so that the core area strength of the structure can be effectively guaranteed during use, and at the same time, it can also ensure that the cast-in-place operation of the connection part is not affected, thereby saving the construction period; by adopting prefabricated beams as the main beam of the structure and cast-in-place beams as the secondary beams, it is ensured that the steel bars in the core area 101 of the beam-column node can be smoothly tied. The steel truss 300 set inside the support-free floor deck 104 greatly improves the bending moment load of the floor slab, thereby achieving the support-free effect at the bottom of the floor. The ordinary part 100 of the column of the structure is cast with ordinary concrete, while the core area 101 of the beam-column node is cast with high-strength concrete, which not only reduces the cost, but also ensures the connection strength of the prefabricated main beam 102 and the cast-in-place secondary beam 103. Through the combined effect of the high-strength steel bars 203 and high-strength concrete inserted inside the prefabricated main beam 102, not only the self-weight of the beam is reduced, but also the beam stiffness is increased, thereby achieving the large span effect of the structure and ensuring the earthquake resistance requirements. By providing the rectangular sections 202 at both ends of the prefabricated main beam 102 and the I-shaped section 201 in the middle of the prefabricated main beam 102, the structure saves materials while ensuring the beam is stressed, thereby improving the economic benefits of the structure.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An assembled building structure, comprising a common part of a column shaft (100), a core area of ​​a beam-column joint (101), a prefabricated main beam (102), a cast-in-place secondary beam (103) and a support-free floor deck (104), characterized in that: The common part (100) of the column body is cast with common concrete, the core area (101) of the beam-column joint is located at the junction of the prefabricated main beam (102) and the cast-in-place secondary beam (103), the core area (101) of the beam-column joint and the prefabricated main beam (102) are both cast with high-strength concrete, and the cast-in-place secondary beam (103) is cast with common concrete.

2. The assembled building structure according to claim 1, characterized in that: The support-free floor deck (104) is cast with high-strength concrete and has a thickness of 5 cm.

3. The assembled building structure according to claim 1, characterized in that: The prefabricated main beam (102) comprises a T-shaped flange (200), an I-shaped section (201), a rectangular section (202) and high-strength steel bars (203), wherein the I-shaped section (201) is arranged in the middle of the prefabricated main beam (102).

4. The assembled building structure according to claim 3, characterized in that: The rectangular cross section (202) is arranged at both ends of the prefabricated main beam (102).

5. The assembled building structure according to claim 4, characterized in that: The rectangular cross section (202) has a range of 1.5 times the height of the prefabricated main beam (102), and the rectangular cross section (202) is cast using ultra-high-strength concrete.

6. The assembled building structure according to claim 3, characterized in that: The high-strength steel bars (203) are fixedly installed inside the prefabricated main beam (102) and are designed to be continuous throughout the entire length.

7. The assembled building structure according to claim 2, characterized in that: The support-free floor deck (104) comprises a steel truss (300) and a concrete bottom plate (301), wherein the steel truss (300) is fixedly installed inside the concrete bottom plate (301).

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