An assembly system and method of construction thereof

Abstract

The application discloses an assembly system and a construction method thereof, and relates to the technical field of buildings, and aims to solve the problem of node connection. The application comprises a prefabricated column, a prefabricated main beam, a prefabricated secondary beam and a prefabricated floor. The prefabricated main beam is arranged along a first direction and connected with two adjacent prefabricated columns, and the prefabricated main beam partially extends into the prefabricated column. The prefabricated secondary beam is arranged along a second direction, the second direction is perpendicular to the first direction, and the end of the prefabricated secondary beam is connected with the prefabricated main beam. The end of the prefabricated floor is connected with the prefabricated secondary beam. The application is used for multi-storey prefabricated buildings.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building, in particular to an assembly system and a construction method thereof. BACKGROUND

[0002] In a multi-storey building, since the prefabricated main beam and the prefabricated secondary beam have a large weight, when installing, the prefabricated main beam and the prefabricated secondary beam need to be fully supported, so as to ensure that the prefabricated main beam and the prefabricated secondary beam can be normally installed, which is difficult to construct, high in cost, and difficult to handle the connection node. SUMMARY

[0003] Embodiments of the present application provide an assembly system and a construction method thereof, which solve the problems of node connection in the previous multi-storey building and the need to increase support at the beam bottom during construction.

[0004] To achieve the above-mentioned purpose, embodiments of the present application adopt the following technical solutions:

[0005] On the one hand, the present application provides an assembly system, comprising a prefabricated column, a prefabricated main beam, a prefabricated secondary beam and a prefabricated floor slab.

[0006] The prefabricated main beam is arranged along a first direction and connected with two adjacent prefabricated columns, and the prefabricated main beam partially extends into the prefabricated column. The prefabricated secondary beam is arranged along a second direction perpendicular to the first direction, and the end of the prefabricated secondary beam is connected with the prefabricated main beam. The end of the prefabricated floor slab is connected with the prefabricated secondary beam.

[0007] The prefabricated main beam partially extends into the prefabricated column, so that the prefabricated column can bear the prefabricated main beam, which not only saves the original support structure at the lower part of the prefabricated main beam, but also reduces the construction difficulty and reduces the construction process. Since the prefabricated column can bear the end of the prefabricated main beam, the node processing between the prefabricated column and the prefabricated main beam is easier.

[0008] Further, the depth of the prefabricated main beam partially extending into the prefabricated column is 30mm-60mm.

[0009] Further, the prefabricated secondary beam comprises a secondary beam body, a part of the end of the secondary beam body extends to form a protrusion, and another part of the end of the secondary beam body forms a mounting groove; the protrusion is at least partially overlapped on the prefabricated main beam, and a part of the prefabricated main beam is located in the mounting groove.

[0010] Further, a plurality of shear reinforcement bars are embedded in the prefabricated secondary beam, and a part of the shear reinforcement bars is located between two adjacent prefabricated floor slabs.

[0011] Further, the depth of the mounting groove in the second direction is 80mm-120mm.

[0012] Furthermore, the precast secondary beam also includes shear steel and reinforcing bars. Part of the shear steel is embedded in the secondary beam body, and another part is embedded in the protrusion. Grouting holes are opened on the protrusion, and the grouting holes pass through the shear steel into the precast main beam. The reinforcing bars are located in the grouting holes, and part of the reinforcing bars are located in the precast main beam.

[0013] Furthermore, the secondary beam also includes multiple studs, the shear steel is an H-beam, the multiple studs are fixed to the web of the H-beam, and the grouting holes pass vertically through the web of the H-beam.

[0014] Furthermore, the assembly system also includes connecting reinforcement bars, straight reinforcement bars, and slab reinforcement bars. The connecting reinforcement bars are located above the precast secondary beams, with both ends lapped onto two adjacent precast floor slabs, and the connecting bars are bent towards the precast secondary beam side to form an arc segment. Straight reinforcement bars are located on multiple arc segments. Slab reinforcement bars are provided at the connection points between precast floor slabs on the side away from the precast secondary beam.

[0015] Furthermore, the gaps and surfaces between the precast main beams, precast secondary beams, and precast floor slabs are filled with cast-in-place concrete.

[0016] On the other hand, embodiments of the present invention also provide a construction method for an assembly system, including an assembly as described in any of the above technical solutions. The construction method for this assembly system includes the following steps:

[0017] Step S1: Install precast columns.

[0018] Step S2: The precast main beam is hoisted between two adjacent precast columns, with part of the precast main beam extending into the precast columns.

[0019] Step S3: Hoist the precast secondary beam between two adjacent precast main beams.

[0020] Step S4: Hoist the precast slab between two adjacent precast secondary beams.

[0021] Step S5: On-site concrete pouring to integrate the precast columns, precast main beams, precast secondary beams, and precast floor slabs into a single unit.

[0022] Step S6: Repeat steps S2 to S5 until construction is completed.

[0023] The construction method of the assembly system provided in this embodiment of the invention can achieve the same technical effect as the assembly system provided in the above embodiment, and will not be repeated here. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a precast column provided by the present invention;

[0025] Figure 2This is a partial top view of the assembly system provided by the present invention;

[0026] Figure 3 This is a schematic diagram illustrating the connection relationship between the precast main beam and the precast column provided by the present invention.

[0027] Figure 4 This invention provides a connection node diagram of precast columns and precast main beams;

[0028] Figure 5 A schematic diagram of the prefabricated secondary beam provided by the present invention;

[0029] Figure 6 This is a side view schematic diagram of the precast secondary beam provided by the present invention;

[0030] Figure 7 A schematic diagram showing the connection between the precast main beam and the precast secondary beam provided by the present invention;

[0031] Figure 8 A top view of the precast main beam and precast secondary beam provided by the present invention;

[0032] Figure 9 A side view of the precast main beam and precast secondary beam provided for this invention;

[0033] Figure 10 A schematic diagram of the connection between the precast floor slab and the precast secondary beam provided by the present invention;

[0034] Figure 11 This is a schematic diagram showing the positions of the slab reinforcement, connecting reinforcement, and straight reinforcement provided for this invention. Detailed Implementation

[0035] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0036] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] This invention provides an assembly system for multi-story concrete structure buildings, the assembly system comprising multiple precast columns 1, such as... Figure 1 As shown, multiple precast columns 1 are arranged parallel to each other along the Z-direction in the plane containing the XY axis. The assembly system also includes precast main beams 2, precast secondary beams 3, and precast floor slabs 4. Among them, as... Figure 2 As shown, the precast main beam 2 is arranged parallel to the first direction (i.e., Figure 2 Multiple precast main beams 2 (in the Y direction) are arranged parallel to each other in the same plane. The precast main beam 2 is located between two adjacent precast columns 1 (in the XY plane), and the end portion of the precast main beam 2 extends into the precast column 1. Between two adjacent precast main beams 2 (in the XY plane), multiple precast secondary beams 3 are also arranged. The ends of these secondary beams 3 are connected to the precast main beams 2. The secondary beams 3 are arranged along a direction parallel to the second direction (i.e., in the Y direction). Figure 2 The first direction is set in the X direction, and the second direction is perpendicular to the first direction. Between two adjacent precast secondary beams 3 (Y direction), multiple precast floor slabs 4 are arranged, and the ends of the precast floor slabs 4 are connected to the precast secondary beams 3.

[0040] In addition, concrete is poured into the gaps and surfaces between the precast main beam 2, the precast secondary beam 3, and the precast floor slab 4, thereby casting the above structures into a single structure.

[0041] It should be noted that the second direction mentioned in the embodiments of this application is approximately perpendicular to the first direction, and errors are allowed during construction. In some other embodiments of this application, in order to meet on-site construction requirements, there may also be a certain angle between the precast main beam 2, the precast secondary beam 3, and the precast floor slab 4.

[0042] like Figure 3 As shown, the precast column 1 has vertical reinforcing bars 11 inside, and each layer of precast columns 1 is connected by pouring concrete through these vertical reinforcing bars 11. In this way, the precast columns 1 between upper and lower layers can be connected into a single structure.

[0043] The following provides an example of the connection node between the precast main beam 2 and the precast column 1. For example, in some embodiments of this application, such as... Figure 4As shown, the precast column 1 has multiple vertical reinforcing bars 11 in the middle, and the precast main beam 2 has protruding bottom reinforcing bars 22 at its ends. Reinforcing bar anchor plates 22 are installed on the bottom reinforcing bars 22, and the bottom reinforcing bars 22 and anchor plates 22 extend into the top of the precast column 1, intersecting with the vertical reinforcing bars 11. The ends of the precast main beam 2 extend into the outside of the vertical reinforcing bars 11 of the precast column 1, with an insertion depth of 30mm to 60mm. When the insertion depth is less than 30mm, the two ends of the precast main beam 2 have relatively small bearing surfaces due to the short insertion length, which is insufficient to support the weight of the entire precast main beam 2. Therefore, during the hoisting and installation of the precast main beam 2, support is still required at the bottom of the precast main beam 2, which not only increases labor costs but also increases construction difficulty. When the insertion depth is greater than 60mm, the vertical steel bars 11 inside the precast column 1 need to be reduced due to excessive insertion to ensure that the precast column 1 has enough space for the precast main beam 2 to enter. In this case, the reduction of the vertical steel bars 11 inside the precast column 1 will reduce the connection strength of the precast column 1 connection part and the strength of the entire precast column 1 itself will also be reduced. This will affect the strength of the entire building and pose a hidden danger to the safety of the entire building.

[0044] Therefore, for example, the depth to which the end of the precast main beam 2 extends into the precast column 1 can be 30mm, 50mm, or 60mm. This ensures that there are sufficient vertical reinforcing bars 11 within the precast column 1 to guarantee the connection strength between the upper and lower precast columns 1 and the strength of the precast column 1 itself. It also ensures that the precast column 1 provides strong support for the precast main beam 2, allowing the precast main beam 2 to be hoisted and installed without the need for additional supports.

[0045] The following provides an example of the structure of the precast secondary beam 3 mentioned above. For instance, in some embodiments of this application, such as... Figure 5 As shown, the precast secondary beam 3 includes a secondary beam body 301, with a portion of the end of the secondary beam body 301 extending out to form a protrusion 31, and another portion of the end of the secondary beam body 301 forming a mounting groove 32. To increase the overall strength of the precast secondary beam 3, as... Figure 6 As shown, multiple shear reinforcement bars 33 can be pre-embedded on the precast secondary beam 3, and the shear reinforcement bars 33 can be set at equal intervals on the top of the precast secondary beam 3.

[0046] like Figure 7 As shown, the protrusion 31 at least partially overlaps the precast main beam 2, and part of the precast main beam 2 is located within the mounting groove 32. In this way, compared to the previous method of installing the precast secondary beam 3 directly onto the precast main beam 2, this application can achieve support for the precast secondary beam 3 through the protrusions 31 at both ends of the precast secondary beam 3. In this case, no additional support is needed when installing the precast secondary beam 3, which not only reduces the construction difficulty and speeds up the construction progress, but also increases the load-bearing capacity of the entire precast secondary beam 3 after construction.

[0047] The following example illustrates the connection between the precast secondary beam 3 and the precast main beam 2. For instance, in some embodiments of this application, the depth of the mounting groove 32 in the second direction can be 80mm to 120mm. When the depth of the mounting groove 32 in the second direction is less than 80mm, since the remaining portion of the protrusion 31 at the end of the precast secondary beam 3 forms the mounting groove 32, the depth of this section of the protrusion 31 in the second direction is less than 80mm. The portion of the protrusion 31 resting on the precast main beam 2 is relatively reduced. Since the stress points of the entire precast secondary beam 3 are concentrated on the protrusions 31 at both ends of the precast secondary beam 3, the protrusions 31 at the ends of the precast secondary beam 3 are insufficient to support the entire precast secondary beam. As a result, the bottom of the precast secondary beam 3 requires additional support to ensure the progress of construction. When the depth of the mounting groove 32 in the second direction is greater than 120mm, the depth of the protrusion 31 in the second direction will be longer. Since the depth of the precast main beam 2 in the second direction is limited, and both sides of the precast main beam 2 are connected to the precast secondary beams 3, if the protrusion 31 is too long, it will affect the installation of the precast main beam 2 relative to the precast secondary beam 3 on the other side.

[0048] Therefore, for example, the depth of the mounting groove 32 in the second direction can be 80mm, 100mm, or 120mm. In this way, not only will it not affect the installation of the precast secondary beam 3 on the precast main beam 2, but it will also allow the protrusion 31 to bear the weight of the entire precast secondary beam 3.

[0049] To further strengthen the connection between the precast main beam 2 and the precast secondary beam 3, such as Figure 8 As shown, the precast secondary beam 3 may also include shear steel 36, part of which is embedded in the secondary beam body 301, and the other part is embedded in the protrusion 31. Figure 9 As shown, a grouting hole 34 is provided on the protrusion 31, and the grouting hole 34 passes through the shear steel 36 into the precast main beam 2. A reinforcing bar 35 is located inside the grouting hole 34, and a portion of the reinforcing bar 35 is located inside the precast main beam 2. The precast secondary beam 3 also includes multiple studs 37. The shear steel 36 is an H-beam, and the studs 37 are fixed to the web of the H-beam. The grouting hole 34 passes vertically through the web of the H-beam.

[0050] In this way, the shear steel 36 and the studs 37 can increase the bearing capacity of the protrusion 31. Furthermore, the reinforcing bars 35 can be inserted on-site into the grouting hole 34, and the grouting hole 34 can be grouted. Together with the shear steel 36 and the studs 37, the shear strength of the joint between the precast secondary beam 3 and the precast main beam 2 can be further increased.

[0051] like Figure 10As shown, in order to cast adjacent precast floor slabs 4 into a monolithic structure, the assembly system also includes slab reinforcement 5, connecting reinforcement 6, and straight reinforcement 7. Among them, as... Figure 11 As shown, above the precast secondary beam 3, the ends of multiple connecting steel bars 6 are located on two adjacent precast floor slabs 4. Figure 11 In the main view (not showing multiple connecting reinforcing bars 6), the connecting reinforcing bars 6 can be arranged at equal intervals, and parts of the connecting reinforcing bars 6 are bent towards the precast secondary beam 3 to form arc segments, with straight reinforcing bars 7 located on multiple arc segments. At the connection between precast floor slabs 4, slab reinforcement 5 is provided on the side away from the precast secondary beam 3. Because the connecting reinforcing bars 6 and straight reinforcing bars 7 are intersected, and the straight reinforcing bars 7 and slab reinforcement 5 are intersected, the stress at this point is more evenly distributed. Furthermore, the upper side of the connection between the precast floor slabs 4 is reinforced with connecting reinforcing bars 6 and slab reinforcement 5. Therefore, after pouring concrete, the connection strength between the precast floor slabs 4 is higher, and the load-bearing capacity is better.

[0052] Furthermore, since the connecting steel bar 6 has a downward arc segment in the middle, the straight steel bar 7 can be more stably accommodated in the arc segment without any movement, thus making the connection steel bar 6 and the straight steel bar 7 more stable after casting.

[0053] In this case, since the top of the precast secondary beam 3 has shear reinforcement 33, part of the shear reinforcement 33 is located in the gap between the slab reinforcement 5, the connecting reinforcement 6 and the straight reinforcement 7, and the other part of the shear reinforcement 33 is located at the top of the precast secondary beam 3. In this way, when the two precast floor slabs 4 are poured, the precast secondary beam 3 and the precast floor slabs 4 on both sides can be cast into one piece. Moreover, the shear reinforcement 33 is perpendicular to the slab reinforcement 5, the connecting reinforcement 6 and the straight reinforcement 7. In this case, it has stronger shear strength.

[0054] In addition, the gaps and surfaces between the precast main beam 2, the precast secondary beam 3 and the precast floor slab 4 are filled with cast-in-place concrete, and are cast into an integral structure with the precast column 1.

[0055] This invention also provides a construction method for an assembly system, including an assembly as described in any of the above technical solutions. The construction method for this assembly system includes the following steps:

[0056] Step S1: Install precast column 1, calibrate precast column 1, and grout precast column 1.

[0057] Step S2: The precast main beam 2 is hoisted between two adjacent precast columns 1, with part of the precast main beam 2 extending into the precast column 1. Fine adjustments are made to connect the end of the precast main beam 2 to the precast column 1.

[0058] Step S3: Hoist the precast secondary beam 3 between two adjacent precast main beams 2.

[0059] Step S4: Hoist the precast slab 4 between two adjacent precast secondary beams 3 and align it in place.

[0060] Step S5: On-site concrete pouring to integrate the precast column 1, precast main beam 2, precast secondary beam 3, and precast floor slab 4 into a single unit.

[0061] Step S6: Repeat steps S2 to S5 until construction is completed.

[0062] It should be noted that this application does not limit the pouring sequence of the precast columns 1, precast main beams 2, precast secondary beams 3, and precast floor slabs 4, as long as the above components are poured into a single unit. Furthermore, the precast column 1 mentioned in this application may include an upper precast column 1 and a lower precast column 1, and the precast main beam 2 may extend between the upper and lower precast columns 1. The upper and lower precast columns 1 are alternately connected by reinforced concrete pouring to form the precast column 1 of this application.

[0063] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0064] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An assembly system, characterized in that, The assembly system includes: A precast column, wherein the precast column has multiple vertical reinforcing bars in the middle; A precast main beam is provided along a first direction and has a protruding bottom reinforcing bar at its end. The bottom reinforcing bar of the precast main beam extends above the precast column to intersect with the vertical reinforcing bar of the precast column, thereby connecting the precast main beam to two adjacent precast columns. The depth to which the precast main beam extends into the precast column is 30mm to 60mm. A precast secondary beam, wherein the precast secondary beam is arranged along a second direction perpendicular to the first direction, and the end of the precast secondary beam is connected to the precast main beam; and, A precast floor slab, the ends of which are connected to the precast secondary beams; The precast secondary beams include: The secondary beam body has a portion of its end extending out to form a protrusion, and another portion of its end forming a mounting groove. The protrusion at least partially overlaps the precast main beam, and a portion of the precast main beam is located within the mounting groove. The shear-resistant steel is partially embedded in the secondary beam body and partially embedded in the protrusion. The protrusion has a grouting hole, which passes through the shear steel section into the precast main beam; a reinforcing bar is located in the grouting hole, and a portion of the reinforcing bar is located inside the precast main beam; Multiple studs are provided, the shear-resistant steel is an H-beam steel plate, the multiple studs are fixed to the web of the H-beam steel plate, and the grouting hole passes vertically through the web of the H-beam steel plate.

2. The assembly system according to claim 1, characterized in that, Multiple shear reinforcement bars are pre-embedded on the precast secondary beam, and a portion of the shear reinforcement bars are located between two adjacent precast floor slabs.

3. The assembly system according to claim 1, characterized in that, The depth of the mounting groove in the second direction is 80mm~120mm.

4. The assembly system according to claim 1, characterized in that, The assembly system also includes: A connecting reinforcing bar is placed above the precast secondary beam. Both ends of the connecting reinforcing bar overlap two adjacent precast floor slabs, and a portion of the connecting reinforcing bar is bent towards the precast secondary beam to form an arc-shaped segment. Straight reinforcing bars are located on multiple of the aforementioned arc-shaped segments; Slab reinforcement bars are provided at the connection between the precast floor slabs on the side away from the precast secondary beam.

5. An assembly system according to claim 1 or 4, characterized in that, The gaps and surfaces between the precast main beams, precast secondary beams and precast floor slabs are filled with cast-in-place concrete.

6. A construction method for an assembly system according to any one of claims 1 to 5, characterized in that, Includes the following steps: Step S1: Install the precast column; Step S2: The precast main beam is hoisted between two adjacent precast columns, with part of the precast main beam extending into the precast column; Step S3: The precast secondary beam is hoisted between two adjacent precast main beams; Step S4: Hoist the precast floor slab between two adjacent precast secondary beams; Step S5: Pour concrete on site to integrate the precast columns, precast main beams, precast secondary beams and precast floor slabs into one unit; Step S6: Repeat steps S2 to S5 until construction is completed.

Images