A precast concrete beam-slab-column composite structure

Abstract

The utility model relates to building technical field especially relates to a prefabricated concrete beam slab column combined structure. Prefabricated concrete beam slab column combined structure includes multiple prefabricated column groups, multiple horizontal arrangement's prefabricated main beam and prefabricated beam slab unit and multiple support assemblies and supporting assemblies. Prefabricated column group includes two prefabricated columns, and the top end of prefabricated column is detachably connected support assembly. The both ends of prefabricated main beam are connected with the top end of adjacent prefabricated column respectively and are supported on the support surface of the support assembly connected with prefabricated column, and multiple prefabricated beam slab units are arranged along the length direction of prefabricated main beam and are overlapped between two prefabricated main beams. Supporting assembly is connected with prefabricated main beam, and prefabricated column, support assembly and supporting assembly make prefabricated beam slab unit present horizontal orientation together. After each structure is prefabricated in factory, transports to construction site and carries out splicing, reduces the demand of on-site concrete pouring, and reduces the quality problem caused by weather condition, worker skill difference and other factors, improves construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of building technology, and in particular to a precast concrete beam-slab-column composite structure. Background Technology

[0002] In building structures, beams, slabs, main beams, and concrete columns are three crucial components that work together to support the weight of the building and ensure its stability. This beam-column-slab structural system is one of the most common structural forms in modern architecture, and its construction quality directly affects the safety and durability of the building.

[0003] Currently, the on-site construction of concrete structures mainly adopts the traditional cast-in-place process. For the construction of concrete columns, vertical formwork needs to be erected on-site. Then, a reinforcing cage is fabricated according to design requirements and placed vertically inside the formwork. Concrete is then poured continuously from the top to the designated height in one go, avoiding cold joints. After the concrete reaches a certain strength, the formwork is removed, followed by necessary curing measures to ensure the concrete fully hardens. The construction of beams, slabs, and main beams also requires on-site formwork and pouring. However, this traditional on-site pouring method has many limitations. The process of constructing beams, slabs, main beams, and concrete columns on-site is extremely cumbersome. On-site formwork and other procedures are complex and require a large amount of manpower, resulting in low construction efficiency. Furthermore, the construction process is significantly affected by environmental factors; extreme temperatures, rain, and snow can all affect the quality of concrete pouring and the curing effect. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides a precast concrete beam-slab-column composite structure, which solves the technical problems of low construction efficiency and unstable quality of traditional cast-in-place concrete structures.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] This utility model embodiment provides a precast concrete beam-slab-column composite structure, including multiple precast column groups, multiple horizontally arranged precast main beams and precast beam-slab units, and multiple support components and bearing components. Each precast column group includes two precast columns arranged side by side and vertically in the left-right direction. The top of each precast column is detachably connected to the support component. The front and rear ends of the precast main beam are respectively connected to the tops of the precast columns in two adjacent precast column groups and supported on the support surface of the support component connected to the precast column. Multiple precast beam-slab units are arranged adjacently along the length direction of the precast main beam and overlap between two precast main beams. At the same time, the outermost two precast beam-slab units are supported on the top surface of the precast columns adjacent to them. The bearing components are connected to the precast main beams and are used to support the precast beam-slab units. The precast columns, support components, and bearing components together make all precast beam-slab units horizontally oriented.

[0009] Preferably, the precast beam-slab unit includes a precast beam-slab, a first beam, and a second beam; the first beam and the second beam are fixedly connected to the bottom front and rear ends of the precast beam-slab, respectively; the left and right ends of the first beam are provided with stepped connecting parts, and the left and right ends of the second beam are provided with column top connecting parts; the left and right ends of the precast beam-slab overlap the tops of two precast main beams, the first beam is snapped into the supporting component through the stepped connecting parts, and the second beam overlaps the top of the precast column through the column top connecting parts.

[0010] Preferably, the precast beam slab is provided with multiple embedded steel bars arranged in an orthogonal grid; both the first beam and the second beam are provided with multiple embedded longitudinal steel bars extending along the beam length, embedded transverse steel bars perpendicular to the embedded longitudinal steel bars, and embedded stirrups spaced apart, the embedded stirrups connecting the embedded longitudinal steel bars and the embedded transverse steel bars.

[0011] Preferably, the top two sides of the precast beam slab are stepped; the embedded plate reinforcement extends laterally from the stepped joint, and the embedded beam stirrups extend vertically from the top of the beam; it also includes multiple horizontally arranged connecting reinforcement bars, which span between the stepped joints of adjacent precast beam slabs, and the two precast beam slabs are connected by pouring concrete into the stepped joint.

[0012] Preferably, the precast beam slab is an integrated structure with the first beam and the second beam.

[0013] Preferably, the support assembly includes two support blocks; the two support blocks are symmetrically arranged on the left and right sides of the precast main beam along the length direction of the precast main beam and are fixedly connected to the side wall of the precast main beam.

[0014] Preferably, the upper end of the precast column has at least two rows of parallel mounting through holes along the horizontal direction; the support assembly includes two support members, multiple threaded rods, and multiple positioning nuts; the support member has an L-shaped structure, with its vertical end fitting against the side of the precast column and its horizontal end extending to the top of the precast column to form a support surface to support the bottom of the outermost precast beam and the outermost precast beam slab unit; the vertical end of the support member has multiple mounting holes, each corresponding to a mounting through hole; the threaded rods pass through the mounting through holes and the mounting holes; the two positioning nuts are connected to the threaded sections at both ends of the threaded rods and abut against the support member and the precast column.

[0015] Preferably, the support assembly further includes multiple pads; each pad has a through hole and is vertically positioned between the support member and the positioning nut.

[0016] Preferably, the support assembly further includes four auxiliary support plates; the auxiliary support plates are triangular in shape, with two auxiliary support plates connected to each side of each support member, the first right-angled side of the auxiliary support plate being fixedly connected to the vertical end of the support member, and the second right-angled side being fixedly connected to the horizontal end of the support member.

[0017] Preferably, multiple lifting rings are symmetrically arranged on both sides of the top of the precast beam-slab unit; the bottom of the lifting rings is detachably connected to the pre-embedded anchors, which are anchored inside the top of the precast beam-slab unit.

[0018] (III) Beneficial Effects

[0019] The beneficial effects of this utility model are:

[0020] This utility model discloses a precast concrete beam-slab-column composite structure comprising multiple precast column groups, precast main beams, and precast beam-slab units. By precasting the precast main beams, precast columns, and precast beam-slab units in a factory, and then transporting them to the site for assembly, the need for on-site concrete pouring is reduced, as are quality problems caused by weather conditions, differences in worker skills, and other factors, thereby improving construction efficiency.

[0021] After the precast concrete beam-slab-column composite structure is hoisted, workers can directly carry out construction work on the precast beam-slab units, which not only saves the construction process of erecting support scaffolds on site, but also makes it easier to carry out hoisting operations on the next floor and speeds up the construction progress.

[0022] The self-locking principle of the support components can support the precast main beam and precast beam-slab units, ensuring the stability of the precast beam-slab units and precast main beam, and the support components facilitate the positioning and installation of the precast beam-slab units. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the precast concrete beam-slab-column composite structure of this utility model;

[0024] Figure 2 This is a side view of a precast concrete beam-slab-column composite structure.

[0025] Figure 3 This is a structural schematic diagram of a precast beam-slab unit;

[0026] Figure 4 This is a schematic diagram of the longitudinal section of a precast beam-slab unit;

[0027] Figure 5 This is a schematic diagram of the longitudinal section of a precast column;

[0028] Figure 6 A schematic diagram showing the breakdown of the supporting components;

[0029] Figure 7 This is a schematic diagram of the precast beam-slab unit structure of Embodiment 2 of the precast concrete beam-slab-column composite structure of this utility model;

[0030] Figure 8 This is a schematic diagram of the connection between adjacent precast beam and slab units in Example 2.

[0031] [Explanation of Labels in the Attached Image]

[0032] 1: Precast column assembly; 11: Precast column; 111: Installation through hole; 112: Embedded column reinforcement;

[0033] 2: Precast main beams;

[0034] 3: Precast beam-slab unit; 31: Precast beam-slab; 311: Embedded slab reinforcement; 312: Connecting reinforcement; 32: First beam; 321: Embedded beam longitudinal reinforcement; 322: Embedded beam transverse reinforcement; 323: Embedded beam stirrups; 33: Second beam; 34: Lifting ring; 35: Embedded anchorage;

[0035] 4: Support assembly; 41: Support piece; 411: Mounting hole; 42: Threaded rod; 43: Locating nut; 44: Washer plate; 441: Through hole; 45: Auxiliary support plate;

[0036] 5: Supporting component; 51: Supporting block;

[0037] a: left and right direction; b: front and back direction. Detailed Implementation

[0038] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Example 1:

[0040] like Figure 1 and Figure 2As shown, this embodiment provides a precast concrete beam-slab-column composite structure, which includes multiple precast column groups 1, multiple horizontally arranged precast main beams 2 and precast beam-slab units 3, and multiple support components 4 and bearing components 5. Specifically, each precast column group 1 includes two precast columns 11 arranged side by side and vertically in the left-right direction, and a support component 4 is detachably connected to the top of each precast column 11. The front and rear ends of the precast main beam 2 are respectively connected to the tops of the precast columns 11 in two adjacent precast column groups 1 and supported on the support surface of the support component 4 connected to the precast columns 11. It should be noted that each precast main beam 2 extends in the front-rear direction. Multiple precast beam-slab units 3 are arranged adjacently along the length of the precast main beam 2 and overlap between two precast main beams 2, while the outermost two precast beam-slab units 3 are supported on the top surface of the precast columns 11 adjacent to them. It should be noted that "the two outermost precast beam-slab units 3" refers to the two precast beam-slab units 3 located at the very front and the very back of multiple adjacent precast beam-slab units 3. The supporting component 5 is connected to the precast main beam 2 and is used to support the precast beam-slab units 3. The precast column 11, the support component 4, and the supporting component 5 together ensure that all precast beam-slab units 3 are horizontally oriented. Specifically, the supporting component 5 supports the adjacent ends of two adjacent precast beam-slab units 3. By prefabricating the precast main beam 2, precast column 11, and precast beam-slab units 3 in the factory, and then transporting them to the site for assembly, the need for on-site concrete pouring is reduced, as are quality problems caused by weather conditions and differences in worker skills, thus improving construction efficiency. After the precast concrete beam-slab-column composite structure is hoisted, workers can directly work on the precast beam-slab units 3, saving the on-site scaffolding construction process and facilitating the hoisting of the next floor, thus accelerating the construction progress. The self-locking principle of the support component 4 can support the precast main beam 2 and the precast beam slab unit 3, ensuring the stability of the precast beam slab unit 3 and the precast main beam 2, and the support component 5 facilitates the positioning and installation of the precast beam slab unit 3.

[0041] It should be noted that, Figure 1 In the diagram, 'a' represents the left-right direction, and 'b' represents the front-back direction.

[0042] like Figure 3 As shown, the precast beam-slab unit 3 includes a precast beam-slab 31, a first beam 32, and a second beam 33. The first beam 32 and the second beam 33 are fixedly connected to the bottom front and rear ends of the precast beam-slab 31, respectively. The left and right ends of the first beam 32 are provided with stepped connecting parts, and the left and right ends of the second beam 33 are provided with column top connecting parts. The left and right ends of the precast beam-slab 31 overlap the tops of the two precast main beams 2, respectively. The first beam 32 is snapped into the supporting component 5 through the stepped connecting parts, and the second beam 33 overlaps the top of the precast column 11 through the column top connecting parts.

[0043] like Figure 1 As shown, a precast concrete beam-slab-column composite structure includes two precast beam-slab units 3. Of course, this embodiment is just one example, and it may also include three, four, or more precast beam-slab units 3. When n precast beam-slab units 3 are included, a precast concrete beam-slab-column composite structure includes 2n-2 sets of supporting components 5. Preferably, this utility model includes two precast beam-slab units 3.

[0044] When a precast concrete beam-slab-column composite structure includes three or more precast beam-slab units 3, the two outermost precast beam-slab units 3 are composed of a precast beam-slab 31, a first beam 32, and a second beam 33, while the precast beam-slab units 3 not on the outermost side are composed of a precast beam-slab 31 and two first beams 32.

[0045] It should be noted that the first beams 32 of adjacent precast beam-slab units 3 are arranged close to each other.

[0046] Furthermore, such as Figure 4 As shown, the precast beam slab 31 has multiple embedded steel bars 311 arranged in an orthogonal grid inside. Both the first beam 32 and the second beam 33 have multiple embedded longitudinal steel bars 321 extending along the beam length, embedded transverse steel bars 322 perpendicular to the embedded longitudinal steel bars 321, and spaced embedded stirrups 323. The embedded stirrups 323 connect the embedded longitudinal steel bars 321 and the embedded transverse steel bars 322. Both the embedded longitudinal steel bars 321 and the embedded transverse steel bars 322 are horizontally arranged.

[0047] Preferably, the precast beam 31 is an integrated structure with the first beam 32 and the second beam 33.

[0048] like Figure 5 As shown, the precast column 11 has vertically embedded column steel bars 112 inside, which extend vertically from the top of the precast column 11. The installation methods for the upper and lower precast columns 11 can be embedded part connection, grouting sleeve connection, bolt connection, etc. These methods are existing technologies and will not be described again.

[0049] like Figure 2 As shown, the support component 5 includes two support blocks 51. The two support blocks 51 are symmetrically arranged on the left and right sides of the precast main beam 2 along the length direction of the precast main beam 2 and are fixedly connected to the side wall of the precast main beam 2. The support blocks 51 serve as a support platform to support the precast beam slab unit 3.

[0050] It should be noted that one support block 51 can support the first beam 32 of two adjacent precast beam slab units 3.

[0051] like Figure 5As shown, the upper end of the precast column 11 has at least two rows of parallel mounting through holes 111 arranged horizontally. Figure 6 As shown, the support assembly 4 includes two support members 41, multiple threaded rods 42, and multiple positioning nuts 43. The support member 41 has an L-shaped structure. Its vertical end fits against the side of the precast column 11, and its horizontal end extends to the top of the precast column 11 to form a support surface supporting the bottom of the precast main beam 2 and the precast beam-slab unit 3. Multiple mounting holes 411 are provided on the vertical end of the support member 41, each corresponding to a mounting through hole 111. The threaded rods 42 pass through the mounting through holes 111 and the mounting holes 411. The two positioning nuts 43 are connected to the threaded sections at both ends of the threaded rods 42 and abut against the support member 41 and the precast column 11.

[0052] Preferably, in order to solve the error problem during installation of the support component 4, such as Figure 6 As shown, the mounting hole 411 is an oblong hole, and the length of the mounting hole 411 extends along the height direction of the precast column 11.

[0053] In a preferred embodiment of the present invention, the upper end of the precast column 11 has three rows of parallel mounting through holes 111 arranged in the horizontal direction.

[0054] Preferably, such as Figure 6 As shown, the upper end of the precast column 11 has mounting through holes 111 along the horizontal and vertical directions. Each precast column 11 is provided with two sets of support components 4, which are arranged perpendicular to each other in the horizontal direction.

[0055] It should be noted that since the mounting through holes 111 at the upper end of the precast column 11 are staggered front to back and left to right, they will not affect the installation of the support component 4.

[0056] In order to distribute the concentrated force of the threaded rod 42 to the surface of the precast column 11 and avoid local crushing of the concrete, such as Figure 6 As shown, the support assembly 4 also includes multiple pads 44. Each of the multiple pads 44 has a through hole 441, and the pads 44 are vertically arranged between the support member 41 and the positioning nut 43.

[0057] To further ensure the support stability of support member 41, such as Figure 6 As shown, the support assembly 4 also includes four auxiliary support plates 45. Specifically, the auxiliary support plates 45 are triangular in shape, with two auxiliary support plates 45 connected to each side of each support member 41. The first right-angled side of the auxiliary support plate 45 is fixedly connected to the vertical end of the support member 41, and the second right-angled side is fixedly connected to the horizontal end of the support member 41.

[0058] To facilitate the hoisting of precast beam-slab unit 3 during construction, such as... Figure 1 and Figure 2As shown, multiple lifting rings 34 are symmetrically arranged on both sides of the top of the precast beam-slab unit 3. The bottom of the lifting ring 34 is connected to a pre-embedded anchor 35, and the lifting ring 34 and the pre-embedded anchor 35 are detachably connected. The pre-embedded anchor 35 is located inside the top of the precast beam-slab unit 3.

[0059] Example 2:

[0060] This embodiment is the same as embodiment 1 in all other aspects, except that, as shown in the example below. Figure 7 and Figure 8 As shown, the top two sides of the precast beam slab 31 are stepped. Further, embedded plate reinforcing bars 311 extend laterally from the stepped joints, and embedded beam stirrups 323 extend vertically from the top of the beam. Multiple horizontally arranged connecting reinforcing bars 312 are also included, spanning between the stepped joints of adjacent precast beam slabs 31. Concrete is poured into the stepped joints to connect the two precast beam slabs 31. This embodiment reduces the need for on-site concrete pouring, lowers the environmental impact, reduces construction site clutter, and allows for more precise material use and reduced waste during the precast process.

[0061] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0063] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0064] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A precast concrete beam-slab-column composite structure, characterized in that, It includes multiple precast column groups (1), multiple horizontally arranged precast main beams (2) and precast beam-slab units (3), as well as multiple support components (4) and supporting components (5); Each of the precast column groups (1) includes two precast columns (11) arranged side by side in the left-right direction and both vertically; The top of each of the precast columns (11) is detachably connected to the support assembly (4); The front and rear ends of the precast main beam (2) are respectively connected to the top of the precast column (11) in two adjacent precast column groups (1) and supported on the support surface of the support component (4) connected to the precast column (11); Multiple precast beam-slab units (3) are arranged adjacently along the length direction of the precast main beam (2) and overlap between two precast main beams (2). Meanwhile, the outermost two precast beam-slab units (3) are supported on the top surface of the precast column (11) adjacent to them. The supporting component (5) is connected to the precast main beam (2) and is used to support the precast beam slab unit (3). The precast column (11), the supporting component (4) and the supporting component (5) together make all the precast beam slab units (3) horizontally oriented.

2. The precast concrete beam-slab-column composite structure as described in claim 1, characterized in that: The precast beam-slab unit (3) includes a precast beam-slab (31), a first beam (32), and a second beam (33); The first beam (32) and the second beam (33) are fixedly connected to the bottom front and rear ends of the precast beam slab (31), respectively. The left and right ends of the first beam (32) are provided with stepped connecting parts, and the left and right ends of the second beam (33) are provided with column top connecting parts. The left and right ends of the precast beam (31) are respectively attached to the top of the two precast main beams (2). The first beam (32) is connected to the supporting component (5) through the stepped connecting part. The second beam (33) is attached to the top of the precast column (11) through the column top connecting part.

3. The precast concrete beam-slab-column composite structure as described in claim 2, characterized in that: The precast beam slab (31) is provided with multiple embedded steel bars (311) arranged in an orthogonal grid inside; Both the first beam (32) and the second beam (33) are provided with multiple embedded longitudinal steel bars (321) extending along the beam length, embedded transverse steel bars (322) perpendicular to the embedded longitudinal steel bars (321), and embedded stirrups (323) spaced apart. The embedded stirrups (323) connect the embedded longitudinal steel bars (321) and the embedded transverse steel bars (322).

4. The precast concrete beam-slab-column composite structure as described in claim 3, characterized in that: The top two sides of the precast beam slab (31) are stepped; The embedded plate reinforcement (311) extends laterally from the stepped joint, and the embedded beam stirrup (323) extends vertically from the top of the beam; It also includes a plurality of horizontally arranged connecting steel bars (312), which span between the stepped joints of adjacent precast beams (31), and the two precast beams (31) are connected by pouring concrete into the stepped joints.

5. The precast concrete beam-slab-column composite structure as described in claim 2, characterized in that: The precast beam slab (31) is an integrated structure with the first beam (32) and the second beam (33).

6. The precast concrete beam-slab-column composite structure as described in claim 1, characterized in that: The support component (5) includes two support blocks (51); Two support blocks (51) are symmetrically arranged on the left and right sides of the precast main beam (2) along the length direction of the precast main beam (2) and are fixedly connected to the side wall of the precast main beam (2).

7. The precast concrete beam-slab-column composite structure as described in claim 1, characterized in that: The upper end of the precast column (11) has at least two rows of parallel mounting through holes (111) in the horizontal direction; The support assembly (4) includes two support members (41), multiple threaded rods (42), and multiple positioning nuts (43); The support member (41) has an L-shaped structure. The vertical end of the support member (41) is attached to the side of the precast column (11), and the horizontal end extends to the top of the precast column (11) to form a support surface to support the bottom of the precast main beam (2) and the outermost precast beam-slab unit (3). The vertical end of the support member (41) has multiple mounting holes (411), and the mounting holes (411) correspond one-to-one with the mounting through holes (111). The threaded rod (42) passes through the mounting through hole (111) and the mounting hole (411); The two positioning nuts (43) are connected to the threaded sections at both ends of the threaded rod (42) and abut against the support (41) and the precast column (11).

8. The precast concrete beam-slab-column composite structure as described in claim 7, characterized in that: The support assembly (4) also includes a plurality of pads (44); Each of the pads (44) has a through hole (441) and the pads (44) are vertically arranged between the support (41) and the positioning nut (43).

9. The precast concrete beam-slab-column composite structure as described in claim 7, characterized in that: The support assembly (4) also includes four auxiliary support plates (45); The auxiliary support plate (45) is triangular in shape, and two auxiliary support plates (45) are connected to each side of each support member (41). The first right-angled side of the auxiliary support plate (45) is fixedly connected to the vertical end of the support member (41), and the second right-angled side is fixedly connected to the horizontal end of the support member (41).

10. The precast concrete beam-slab-column composite structure as described in claim 1, characterized in that: Multiple lifting rings (34) are symmetrically arranged on both sides of the top of the precast beam and slab unit (3); The bottom of the lifting ring (34) is detachably connected to the pre-embedded anchor (35), which is anchored inside the top of the precast beam unit (3).

Images