A connection node structure between a local composite plate and a PEC column

Abstract

The present invention discloses a connection node structure between a partial composite slab and a PEC column. This relates to the field of building technology. Specifically, the present application includes a prefabricated PEC column for vertical support, a beam horizontally connected to the prefabricated PEC column, a partial composite slab laid on the beam, wherein the prefabricated PEC column is positioned on one side of the partial composite slab when the partial composite slab is laid on the beam, and a connection assembly for fixedly connecting the end of the partial composite slab to the prefabricated PEC column. The present invention uses the connection assembly to fixedly connect the end of the partial composite slab to the prefabricated PEC column, thereby enhancing the integrity of the floor slab and the frame structure, preventing local cracking of the floor slab, and ensuring the safety performance and service life of the floor slab.

Description

Technical Field

[0001] The present invention relates to the field of building technology, in particular to a connection node structure of a local composite plate and a PEC column. Background Art

[0002] In recent years, PEC columns have been widely used in prefabricated building structures. PEC columns consist of a concrete-filled H-shaped steel cavity, equipped with a certain number of connecting rods and longitudinal reinforcements to form a supporting column according to structural and load-bearing requirements. However, when PEC columns are used to lay floor slabs, PEC beams or steel beams are connected to the PEC columns, and the floor slab is overlapped on the frame formed by the PEC columns and beams. This can lead to a lack of reliable connection between the PEC columns and the floor slab. Therefore, to strengthen the connection between the floor slab and the overall structure, prevent local cracking in the floor slab, and ensure the safety of the floor slab, a method for connecting the floor slab to the main structure at the PEC column-beam connection point was invented and designed, which has important application value.

[0003] Chinese patent CN110344503B, published on April 24, 2020, discloses a connection node structure between a partial composite slab and a composite wall column, comprising a composite wall column and a partial composite slab, wherein a support plate is provided on the composite wall column, a rib plate is provided on the support plate, an opening is provided on the rib plate, the end of the partial composite slab is provided on the support plate, a through-reinforcement is provided in the opening, and the steel bars on the partial composite slab extend from the side of the through-reinforcement to between the through-reinforcement and the composite wall column. This node structure can eliminate the reserved overhanging steel bars, making it easier to process and transport. However, the connection between the composite wall column and the partial composite slab in this node structure is not reliable enough, which leads to local cracking of the laid partial composite slab, and the safety performance of the floor slab cannot be ensured. Summary of the Invention

[0004] The purpose of the present invention is to address the deficiencies of the above-mentioned prior art and provide a connection node structure between a local composite slab and a PEC column, which can strengthen the connection between the floor slab and the overall structure, prevent local cracking of the floor slab, and ensure the safety performance of the floor slab.

[0005] The present invention proposes a connection node structure of a partial composite plate and a PEC column, comprising a vertically supported prefabricated PEC column, a beam horizontally connected to the prefabricated PEC column, a partial composite plate laid on the beam, when the partial composite plate is laid on the beam, the prefabricated PEC column is located on one side of the partial composite plate, and a connection assembly for fixedly connecting the end of the partial composite plate to the prefabricated PEC column.

[0006] Furthermore, a step-shaped structure is provided at the end of the partial composite plate, and the connection assembly includes a concrete post-cast strip filled between the step-shaped structure, the beam and the prefabricated PEC column.

[0007] Furthermore, the end of the partial composite plate is provided with plate reinforcement extending from the stepped structure, and the concrete post-cast strip covers the plate reinforcement when filling between the stepped structure, the beam and the prefabricated PEC column.

[0008] Furthermore, the connection assembly also includes distribution bars laid between the stepped structure and the prefabricated PEC column, and the concrete post-cast strip covers the distribution bars when it is filled between the stepped structure, the beam and the prefabricated PEC column.

[0009] Furthermore, the connection assembly also includes a reinforcement member having one end fixedly connected to the prefabricated PEC column and the other end fixedly connected to the plate reinforcement. When the concrete post-cast strip is filled between the stepped structure, the beam and the prefabricated PEC column, the reinforcement member is covered.

[0010] Furthermore, the reinforcement includes a cover plate whose back is fixedly connected to the prefabricated PEC column, and a reinforcement rib whose one end is fixedly connected to the front of the cover plate and the other end is fixedly connected to the plate rib. The concrete post-cast strip filled between the stepped structure, the beam and the prefabricated PEC column covers the cover plate and the reinforcement rib.

[0011] Furthermore, the two ends of the back side of the cover plate are fixedly connected to the wing plates of the prefabricated PEC column main steel member, and the reinforcement member also includes an anchor bar with one end fixedly connected to the middle part of the back side of the cover plate, and the anchor bar is located between the concrete filled in the prefabricated PEC column main steel member.

[0012] Furthermore, a through hole is provided on the sealing plate, and the reinforcement also includes a sleeve whose one end is fixedly connected to the web of the prefabricated PEC column main steel member and the other end is flush with the outer side surface of the concrete filled in the prefabricated PEC column main steel member, the end of the sleeve flush with the outer side surface of the concrete is provided with a threaded hole passing through the sleeve, a screw with one end passing through the through hole and screwed to the threaded hole, and a limiting nut sleeved on the screw.

[0013] Furthermore, the through hole is a strip-shaped through hole.

[0014] Furthermore, the cross beams are four and are horizontally connected to the four side surfaces of the prefabricated PEC columns respectively; the partial composite plates are four and are laid on two adjacent cross beams at both ends respectively; the distribution ribs are laid between the stepped structures of the four partial composite plates and the prefabricated PEC columns; the distribution ribs are fixedly connected to the plate ribs of the four partial composite plates.

[0015] The connection node structure of a partial composite plate and a PEC column of the present invention has the following gain effects:

[0016] (1) This structure uses connecting components to fix the ends of the local composite slabs to the prefabricated PEC columns, thereby enhancing the integrity of the floor slab and the frame structure, preventing local cracking of the floor slab, and ensuring the safety performance and service life of the floor slab;

[0017] (2) When the partial composite slab of this structure is laid on the beam, a concrete post-casting strip is filled between the step-shaped structure, the beam and the prefabricated PEC column. After the concrete post-casting strip hardens, the partial composite slab is fixedly connected to the prefabricated PEC column and the beam, thereby enhancing the integrity of the floor slab and the frame structure and preventing local cracking of the floor slab;

[0018] (3) In this structure, slab reinforcement extends from the stepped structure at the end of the partial composite slab. When the concrete post-cast strip is filled between the stepped structure, the beam and the precast PEC column, the concrete post-cast strip covers the slab reinforcement. After the concrete post-cast strip hardens, the slab reinforcement is located between the concrete and is fixedly connected to the concrete post-cast strip, thereby further strengthening the connection strength between the partial composite slab and the precast PEC column and the beam.

[0019] (4) Distribution bars are laid between the step-shaped structure at the end of the partial composite slab of this structure, the beams and the prefabricated PEC columns. When the concrete post-cast strip is filled between the step-shaped structure, the beams and the prefabricated PEC columns, the distribution bars are covered. After the concrete post-cast strip hardens, the distribution bars are distributed in the concrete post-cast strip, thereby strengthening the structural strength of the concrete post-cast strip, thereby making the connection between the partial composite slab and the prefabricated PEC columns and beams more stable through the concrete post-cast strip;

[0020] (5) The reinforcement of this structure includes a cover plate and a reinforcement rib. The back of the cover plate is fixedly connected to the prefabricated PEC column. One end of the reinforcement rib can be fixedly connected to the front of the cover plate by welding, and the other end can be fixedly connected to the plate rib by tying together with a tie piece, thereby fixing the local composite plate to the prefabricated PEC column, further enhancing the integrity of the floor slab and the frame structure, and preventing local cracking of the floor slab.

[0021] (6) One end of the anchor bar of this structure can be fixed to the middle of the back of the cover plate by welding, and the other end of the anchor bar extends to the middle of the two wing plates of the main steel member of the prefabricated PEC column. When the prefabricated PEC column is cast, the concrete filled in the main steel member of the prefabricated PEC column will cover the anchor bar, thereby further fixing the cover plate to the prefabricated PEC column, making the connection between the cover plate and the prefabricated PEC column more stable;

[0022] (7) One end of the sleeve of this structure is fixedly connected to the web of the main steel member of the prefabricated PEC column, and the other end is flush with the outer surface of the concrete filled in the main steel member of the prefabricated PEC column. The screw is screwed to one end of the sleeve with a threaded hole, and the limit nut abuts against the sealing plate, thereby fixing the sealing plate to the sleeve, thereby achieving a fixed connection between the sealing plate and the prefabricated PEC column;

[0023] (8) When the distribution reinforcement of this structure is laid between the stepped structure of multiple partial composite plates and the prefabricated PEC columns, it is also laid in the gap between two adjacent partial composite plates, thereby not only fixing the multiple partial composite plates and the prefabricated PEC columns, but also fixing the two adjacent partial composite plates, thereby further enhancing the integrity of the floor slab and the frame structure and preventing local cracking of the floor slab. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In the drawings, like reference numerals are used to represent like elements.

[0025] Figure 1 This is a schematic structural diagram of a connection node structure of a partial composite plate and a PEC column according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic structural diagram of a connection node structure between a partial composite slab and a PEC column without a concrete post-cast strip in an embodiment of the present invention;

[0027] Figure 3 A structural schematic diagram of an embodiment of a reinforcement member for a connection node structure of a partial composite plate and a PEC column according to an embodiment of the present invention;

[0028] Figure 4 This is a cross-sectional view of an installation embodiment of a reinforcement member for a connection node structure of a partial composite plate and a PEC column according to an embodiment of the present invention;

[0029] Figure 5 A structural schematic diagram of another embodiment of a reinforcement member for a connection node structure of a partial composite plate and a PEC column according to an embodiment of the present invention;

[0030] Figure 6 This is a cross-sectional view of the installation of another embodiment of a reinforcement member for a connection node structure of a partial composite plate and a PEC column according to an embodiment of the present invention.

[0031] In the figure: 1. Prefabricated PEC column; 2. Beam; 3. Partial composite slab; 31. Step-shaped structure; 32. Slab reinforcement; 4. Concrete post-cast strip; 5. Distribution reinforcement; 6. Reinforcement; 61. Closing plate; 611. Through hole; 62. Reinforcement; 63. Anchor reinforcement; 64. Sleeve; 65. Screw; 66. Limit nut. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] The embodiment of the present invention is a connection node structure of a partial composite plate and a PEC column, comprising a prefabricated PEC column 1 for vertical support, a beam 2 horizontally connected to the prefabricated PEC column 1, a partial composite plate 3 laid on the beam 2, when the partial composite plate 3 is laid on the beam 2, the prefabricated PEC column 1 is located on one side of the partial composite plate 3, and a connection component for fixing the end of the partial composite plate 3 to the prefabricated PEC column 1. The specific effect is shown in FIG. Figure 1 .

[0034] In the field of building decoration, PEC columns are formed by pouring concrete in the middle area of ​​H-shaped steel, which fills the middle area of ​​the H-shaped steel with concrete to form a rectangular column to support the top of the building wall. In the present application, a prefabricated PEC column 1 with vertical support is provided. The prefabricated PEC column 1 is a rectangular column composed of a main steel part and concrete filled in the main steel part. The main steel part is an H-shaped steel, and the floor slab is designed as a partial composite slab 3. A crossbeam 2 is horizontally connected to the prefabricated PEC column 1, and the floor slab is laid by laying the partial composite slab 3 on the crossbeam 2. When the partial composite slab 3 is laid on the crossbeam 2, the prefabricated PEC column 1 is located on one side of the partial composite slab 3, and the end of the partial composite slab 3 is fixedly connected to the prefabricated PEC column 1 through a connecting assembly, thereby enhancing the integrity of the floor slab and the frame structure, preventing local cracking of the floor slab, and ensuring the safety performance and service life of the floor slab.

[0035] In this embodiment, a step-shaped structure 31 is provided at the end of the partial composite plate 3, and the connection assembly includes a concrete post-cast strip 4 filled between the step-shaped structure 31, the beam 2 and the prefabricated PEC column 1. Figure 1 and Figure 2 A step-shaped structure 31 is provided at the end of the partial composite slab 3. Since the prefabricated PEC column 1 is located on one side of the partial composite slab 3 when the partial composite slab 3 is laid on the crossbeam 2, the step-shaped structure 31 at the end of the partial composite slab 3 is arranged opposite to the prefabricated PEC column 1. When the partial composite slab 3 is laid on the crossbeam 2, a concrete post-casting strip 4 is filled between the step-shaped structure 31, the crossbeam 2 and the prefabricated PEC column 1. After the concrete post-casting strip 4 hardens, the partial composite slab 3 is fixedly connected to the prefabricated PEC column 1 and the crossbeam 2, thereby enhancing the integrity of the floor slab and the frame structure and preventing local cracking of the floor slab.

[0036] The reason for providing a stepped structure 31 at the end of the partial composite slab 3 and filling a concrete post-cast strip 4 between the stepped structure 31, the crossbeam 2, and the precast PEC column 1 is, on the one hand, that if the concrete post-cast strip 4 is directly covered on the partial composite slab 3, it will be solid after hardening and have a certain thickness, thus forming a bump at the connection between the partial composite slab 3 and the precast PEC column 1, affecting the aesthetics of the floor slab. However, by providing a stepped structure 31 at the end of the partial composite slab 3, filling the concrete post-cast strip 4 in the stepped structure 31, and making the filled concrete post-cast strip 4 flush with the top surface of the partial composite slab 3, the top surface of the partial composite slab 3 remains flat after the concrete post-cast strip 4 hardens, making the floor slab more aesthetically pleasing.

[0037] On the other hand, since the prefabricated PEC column 1 is located on one side of the end of the partial composite slab 3, a gap is left between the prefabricated PEC column 1 and the partial composite slab 3. If only the concrete post-cast strip 4 is filled in the gap between the prefabricated PEC column 1 and the partial composite slab 3, and the top surface of the concrete post-cast strip 4 is made flush with the top surface of the partial composite slab 3, the top surface of the partial composite slab 3 is ensured to be flat, thereby ensuring the aesthetics of the floor slab laying. However, since the gap between the prefabricated PEC column 1 and the partial composite slab 3 is small, the fixed connection between the prefabricated PEC column 1 and the end of the partial composite slab 3 and the beam 2 is performed by filling the gap with the concrete post-cast strip 4, which will cause the fixed connection between the partial composite slab 3 and the prefabricated PEC column 1 and the beam 2 to be not strong enough, thereby affecting the stability of the floor slab laying. A step-shaped structure 31 is provided at the end of the partial composite plate 3, and a concrete post-cast strip 4 is filled between the step-shaped structure 31, the beam 2 and the prefabricated PEC column 1, which can increase the filling amount of concrete and increase the contact area between the concrete post-cast strip 4 and the partial composite plate 3, thereby making the fixed connection between the partial composite plate 3 and the prefabricated PEC column 1 and the beam 2 more firmly.

[0038] In this embodiment, the end of the partial composite plate 3 is provided with a plate reinforcement 32 extending from the step-shaped structure 31. When the concrete post-cast strip 4 is filled between the step-shaped structure 31, the beam 2 and the prefabricated PEC column 1, the plate reinforcement 32 is covered. The specific effect is shown in FIG. Figure 1 and Figure 2 The slab reinforcement 32 extends from the stepped structure 31 at the end of the partial composite slab 3. When the concrete post-cast strip 4 is filled between the stepped structure 31, the beam 2 and the precast PEC column 1, the concrete post-cast strip 4 covers the slab reinforcement 32. After the concrete post-cast strip 4 hardens, the slab reinforcement 32 is located between the concrete post-cast strips 4 and is fixedly connected to the concrete post-cast strips 4, thereby further strengthening the connection strength between the partial composite slab 3 and the precast PEC column 1 and the beam 2.

[0039] In this application, the slab reinforcements 32 can be multiple bars extending from the stepped structure 31 at the end of the partial composite slab 3. The greater the number of slab reinforcements 32, the more secure the connection with the filled concrete strip 4. In other words, the stronger the connection between the partial composite slab 3 and the precast PEC columns 1 and beams 2. However, the greater the number of slab reinforcements 32, the greater the processing cost of the partial composite slab 3, thereby increasing the cost of floor slab installation. Therefore, in actual use, the number of slab reinforcements 32 can be adjusted according to user needs.

[0040] In this embodiment, the connection assembly further includes a distribution bar 5 laid between the step-shaped structure 31 and the prefabricated PEC column 1. When the concrete post-cast strip 4 is filled between the step-shaped structure 31, the beam 2 and the prefabricated PEC column 1, the distribution bar 5 is covered. The specific effect is shown in FIG. Figure 1 and Figure 2 Distribution bars 5 are laid between the stepped structure 31 at the end of the partial composite slab 3, the crossbeam 2 and the precast PEC column 1. When the concrete post-cast strip 4 is filled between the stepped structure 31, the crossbeam 2 and the precast PEC column 1, the distribution bars 5 are covered. After the concrete post-cast strip 4 hardens, the distribution bars 5 are distributed in the concrete post-cast strip 4, thereby strengthening the structural strength of the concrete post-cast strip 4, thereby making the concrete post-cast strip 4 more stable in fixing the connection between the partial composite slab 3, the precast PEC column 1 and the crossbeam 2.

[0041] In this embodiment, the connection assembly further includes a reinforcement member 6 with one end fixedly connected to the prefabricated PEC column 1 and the other end fixedly connected to the plate reinforcement 32. Figure 2 In the present application, a reinforcement member 6 is also provided, one end of which is fixedly connected to the prefabricated PEC column 1, and the other end is fixedly connected to the plate reinforcement 32 extending from the step structure at the end of the partial composite plate 3, thereby further strengthening the connection strength between the partial composite plate 3 and the prefabricated PEC column 1.

[0042] When filling concrete between the stepped structure 31, the beam 2 and the prefabricated PEC column 1, the filled concrete post-casting strip 4 will cover the reinforcement 6. On the one hand, after the concrete post-casting strip 4 hardens, the reinforcement 6 is located in the concrete post-casting strip 4 and is fixedly connected to the concrete post-casting strip 4, thereby enhancing the integrity of the floor slab and the frame structure and preventing local cracking of the floor slab; on the other hand, the reinforcement 6 is buried in the concrete post-casting strip 4, so that the connection between the partial composite slab 3 and the prefabricated PEC column 1 remains flat and flush with the top surface of the partial composite slab 3, thereby improving the aesthetics of the floor slab laying.

[0043] In this embodiment, the reinforcement 6 includes a sealing plate 61 fixedly connected to the prefabricated PEC column 1 at the back, and a reinforcement rib 62 fixedly connected to the front of the sealing plate 61 at one end and fixedly connected to the plate rib 32 at the other end. Figure 2The reinforcement 6 includes a sealing plate 61 and a reinforcing rib 62. The back of the sealing plate 61 is fixedly connected to the prefabricated PEC column 1. One end of the reinforcing rib 62 can be fixedly connected to the front of the sealing plate 61 by welding, and the other end can be fixedly connected to the plate rib 32 by binding together with a binding piece, thereby fixing the local composite plate 3 to the prefabricated PEC column 1, further enhancing the integrity of the floor slab and the frame structure, and preventing local cracking of the floor slab.

[0044] When the concrete post-cast strip 4 is filled between the stepped structure 31, the beam 2 and the prefabricated PEC column 1, the concrete post-cast strip 4 covers the sealing plate 61 and the reinforcing rib 62. Since the top surface of the concrete filled between the stepped structure 31, the beam 2 and the prefabricated PEC column 1 must be flush with the top surface of the local composite plate 3, when the local composite plate 3 is laid on the beam 2, the height at which the sealing plate 61 is fixed on the prefabricated PEC column 1 cannot exceed the top of the local composite plate 3, so as to prevent the top of the sealing plate 61 from being exposed outside the concrete post-cast strip 4 filled between the stepped structure 31, the beam 2 and the prefabricated PEC column 1. This not only reduces the connection strength between the local composite plate 3 and the prefabricated PEC column and the beam 2, but also affects the aesthetics of the floor slab laying.

[0045] In this embodiment, the two ends of the back of the cover plate 61 are fixedly connected to the wing plate of the main steel member of the prefabricated PEC column 1. The reinforcement 6 also includes an anchor bar 63 that is fixedly connected to the middle part of the back of the cover plate 61 at one end. The anchor bar 63 is located between the concrete filled in the main steel member of the prefabricated PEC column 1. The specific effect is shown in FIG. Figure 3 and Figure 4 In the present application, the prefabricated PEC column 1 is a rectangular column consisting of a main steel member and concrete filled in the main steel member. The main steel member is an H-shaped steel. The H-shaped steel includes flanges at both ends and a web located between the two flanges and connected to the two flanges at both ends.

[0046] The two ends of the back of the cover plate 61 can be fixedly connected to the wing plates at both ends of the main steel part of the prefabricated PEC column 1 by welding, thereby fixing the cover plate 61 to the prefabricated PEC column 1. One end of the anchor bar 63 can be fixed to the middle of the back of the cover plate 61 by welding, and the other end of the anchor bar 63 extends to the middle of the two wing plates of the main steel part of the prefabricated PEC column 1. When the prefabricated PEC column 1 is cast, the concrete filled in the main steel part of the prefabricated PEC column 1 covers the anchor bar 63. After the concrete hardens, the anchor bar 63 is fixedly connected to the prefabricated PEC column 1, thereby further fixing the cover plate 61 to the prefabricated PEC column 1, making the connection between the cover plate 61 and the prefabricated PEC column 1 more stable, and further making the connection between the partial composite plate 3 and the prefabricated PEC column 1 and the crossbeam 2 more stable.

[0047] In the present application, the reason why the two ends of the back side of the closing plate 61 are welded to the wing plates at both ends of the main steel part of the prefabricated PEC column 1, and the concrete filled in the main steel part of the prefabricated PEC column 1 covers the anchor bar 63 in two ways to fix the closing plate 61 and the prefabricated PEC column 1 is, on the one hand, to improve the connection strength between the closing plate 61 and the prefabricated PEC column 1. The two ends of the back side of the closing plate 61 are welded to the wing plates at both ends of the main steel part of the prefabricated PEC column 1, and the middle part of the back side of the closing plate 61 is fixedly connected to the concrete filled in the main steel part of the prefabricated PEC column 1 through the anchor bar 63, so that the connection between the closing plate 61 and the prefabricated PEC column 1 is more stable.

[0048] On the other hand, since the anchor bar 63 needs to be inserted into the concrete when the concrete filled in the main steel part of the prefabricated PEC column 1 is still in a fluid state, and wait for a period of time for the concrete to harden into a solid state before it can play the role of fixed connection, if only the anchor bar 63 is used to fix the cover plate 61 to the prefabricated PEC column 1, while waiting for the concrete to harden, the force exerted by the fluid concrete on the anchor bar 63 is small, and the anchor bar 63 cannot be limited. As mentioned above, there are requirements for the height at which the cover plate 61 is fixed on the prefabricated PEC column 1, so an additional limiting device is required to limit the anchor bar 63 and maintain the installation height of the cover plate 61 on the prefabricated PEC column 1, which makes the structure of this application complicated.

[0049] If the closure plate 61 is fixedly connected to the prefabricated PEC column 1 by only welding the two ends of the back side of the closure plate 61 to the wing plates at the two ends of the main steel member of the prefabricated PEC column 1, the thickness of the wing plates at the two ends of the main steel member of the prefabricated PEC column 1 is limited, which will result in poor connection strength between the closure plate 61 and the prefabricated PEC column 1, thereby affecting the connection strength between the local composite plate 3 and the prefabricated PEC column 1. Therefore, in the present application, the two ends of the back side of the closure plate 61 can be first welded to the wing plates at the two ends of the main steel member of the prefabricated PEC column 1, and the installation height of the closure plate 61 on the prefabricated PEC column 1 can be fixed. Then, concrete can be filled into the main steel member of the prefabricated PEC column 1, and after the concrete hardens, it can be fixed to the anchor bar 63. This not only makes the laying of the floor slab convenient and quick, but also makes the connection between the closure plate 61 and the prefabricated PEC column 1 more stable.

[0050] In the present application, there is another embodiment of the reinforcement 6: the reinforcement 6 includes a sleeve 64, a screw 65 and a limit nut 66, one end of the sleeve 64 is fixedly connected to the web of the main steel member of the prefabricated PEC column 1, and the other end is flush with the outer side of the concrete filled in the main steel member of the prefabricated PEC column 1, and the end of the sleeve 64 flush with the outer side of the concrete is provided with a threaded hole, a through hole 611 is provided on the sealing plate 61, one end of the screw 65 passes through the through hole 611 and is screwed to the threaded hole, and the limit nut 66 is sleeved on the screw 65. When one end of the screw 65 passes through the through hole 611 and is screwed to the threaded hole, the limit nut 66 abuts against the sealing plate 61. The specific effect is shown in FIG. Figure 5 and Figure 6 .

[0051] Since one end of the sleeve 64 is fixedly connected to the web of the main steel part of the prefabricated PEC column 1, when concrete is filled in the main steel part of the prefabricated PEC column 1, the concrete is wrapped around the outer periphery of the sleeve 64. After the concrete hardens, the concrete is fixedly connected to the sleeve 64, thereby making the connection between the sleeve 64 and the prefabricated PEC column 1 more stable. The other end of the sleeve 64 is flush with the outer side surface of the concrete, and the end of the sleeve 64 that is flush with the outer side surface of the concrete is provided with a threaded hole passing through the sleeve 64. One end of the screw 65 first passes through the through hole 611 of the sealing plate 61 and is screwed into the threaded hole on the sleeve 64. At this time, the sealing plate 61 is sleeved on the screw 65, and then the limiting nut 66 is screwed onto the screw 65 from the end of the screw 65 away from the screw connection with the sleeve 64 until the limiting nut 66 abuts against the side of the sealing plate 61 away from the sleeve 64, and the side of the sealing plate 61 close to the sleeve 64 is in contact with the outer side surface of the concrete, thereby fixing the sealing plate 61 to the prefabricated PEC column 1.

[0052] It can be foreseen that the cross-sectional diameter of the limiting nut 66 is larger than the cross-sectional diameter of the through hole 611, or a pad with a cross-sectional area larger than the cross-sectional area of ​​the through hole 611 is provided between the limiting nut 66 and the sealing plate 61, so that the limiting nut 66 can exert a force on the side of the sealing plate 61 when limiting the sealing plate 61 without passing through the through hole 611.

[0053] Compared with the previous embodiment of the reinforcement 6, this embodiment has the following advantages: First, in the previous embodiment, the anchor bar 63 is fixed in the middle of the back side of the cover plate 61. If you want to fix the anchor bar 63 with the concrete filled in the main steel part of the prefabricated PEC column 1, it is necessary to embed the anchor bar 63 in the middle of the two wing plates of the main steel part of the prefabricated PEC column 1 during the casting process of the prefabricated PEC column 1, and then fill the main steel part of the prefabricated PEC column 1 with concrete. After the concrete hardens, the casting of the prefabricated PEC column 1 is completed. At this time, the prefabricated PEC column 1 and the cover plate 61 are an integrated structure, which will make it more difficult to transport the prefabricated PEC column 1 after the casting is completed.

[0054] In this embodiment, when the prefabricated PEC column 1 is cast, it is only necessary to first weld the sleeve 64 to the web of the main steel member of the prefabricated PEC column 1, then fill it with concrete, and after the concrete hardens, the casting of the prefabricated PEC column 1 is completed. At this time, the cast prefabricated PEC column 1 and the cover plate 61 are a split structure. The prefabricated PEC column 1 needs to be fixedly connected to the cover plate 61, and then screwed to the sleeve 64 fixed to the prefabricated PEC column 1 through the screw 65. Therefore, the cast prefabricated PEC column 1 and the cover plate 61 can be transported separately, and then the prefabricated PEC column 1 and the cover plate 61 can be fixedly connected at the construction site, thereby making the implementation of the present application simpler and more convenient to use.

[0055] Second, in this embodiment, the sealing plate 61 is fixedly connected to the prefabricated PEC column 1 by screwing, and can also be removed from the prefabricated PEC column 1 by means of a screw 65, so that the sealing plate 61 can be recycled, which has energy-saving and environmental protection significance. In the previous embodiment, the sealing plate 61 is fixedly connected to the prefabricated PEC column 1 by an anchor bar 63. After the prefabricated PEC column 1 is cast, the sealing plate 61 is completely fixed on the prefabricated PEC column 1 and cannot be removed, so that the sealing plate 61 cannot be recycled.

[0056] In this embodiment, the through hole 611 is a strip-shaped through hole 611. For specific effects, see Figure 5 The through hole 611 provided on the closing plate 61 is set as a strip-shaped through hole 611 so that the screw 65 can pass through the through hole 611 and then be screwed to the sleeve 64, and the limit nut 66 can abut against the closing plate 61. When the closing plate 61 is fixed on the prefabricated PEC column 1, it is convenient to adjust the fixed position of the closing plate 61 on the prefabricated PEC column 1. Since the fixed connection between the reinforcement member 6 and the local composite plate 3 is achieved by the fixed connection between the reinforcement rib 62 provided on the front of the closing plate 61 and the plate rib 32 of the local composite plate 3, the fixed position of the closing plate 61 on the prefabricated PEC column 1 can be adjusted, so that when the local composite plate 3 is laid, the reinforcement rib 62 provided on the front of the closing plate 61 can better match the position of the plate rib 32 of the local composite plate 3, thereby better binding the reinforcement rib 62 and the plate rib 32 together, thereby achieving a fixed connection between the reinforcement member 6 and the local composite plate 3.

[0057] In the present application, the strip-shaped through-holes 611 can be arranged vertically or horizontally on the sealing plate 61. When the strip-shaped through-holes 611 are arranged vertically on the sealing plate 61, the vertical position of the sealing plate 61 fixed on the prefabricated PEC column 1 can be adjusted; when the strip-shaped through-holes 611 are arranged horizontally on the sealing plate 61, the horizontal position of the sealing plate 61 fixed on the prefabricated PEC column 1 can be adjusted. The specific situation can be determined according to the actual construction situation.

[0058] In this embodiment, the cross beams 2 are four and are horizontally connected to the four sides of the prefabricated PEC column 1 respectively. The two ends of the partial composite plates 3 are four and are respectively laid on two adjacent cross beams 2. The distribution ribs 5 are laid between the stepped structures 31 of the four partial composite plates 3 and the prefabricated PEC column 1. The distribution ribs 5 are fixedly connected to the plate ribs 32 of the four partial composite plates 3. The specific effect is shown in FIG. Figure 2 The prefabricated PEC column 1 is a rectangular column, with a horizontal beam 2 connected to each of the four sides of the prefabricated PEC column 1. There are four partial composite plates 3, and the two ends of each partial composite plate 3 are laid on two adjacent beams 2, so that the four partial composite plates 3 are enclosed around the prefabricated PEC column 1 to complete the laying of the floor slab.

[0059] The reason why four partial composite plates 3 are set up is, on the one hand, to facilitate the laying of the floor slab. If the floor slab is a whole piece of partial composite plate 3, transportation and construction will be more difficult. However, using multiple partial composite plates 3 is more convenient to transport. When transported to the construction site, multiple partial composite plates 3 are laid on the beams 2 respectively, making the laying of the floor slab easier to implement. On the other hand, there is a certain gap between the two adjacent partial composite plates 3 laid on the upper end of the beam 2, and the distribution reinforcement 5 is laid on the stepped structure 31 of the multiple partial composite plates 3 and the prefabricated PEC When the concrete is laid between the columns 1, it is also laid in the gap between the two adjacent partial composite slabs 3 and fixedly connected to the plate reinforcement 32 at the end of the partial composite slab 3. At the same time, when the concrete post-cast strip 4 is filled between the step-shaped structure 31, the beam 2 and the prefabricated PEC column 1, the concrete post-cast strip 4 is also filled in the gap between the two adjacent partial composite slabs 3, thereby not only fixing the multiple partial composite slabs 3 and the prefabricated PEC column 1, but also fixing the two adjacent partial composite slabs 3, thereby further enhancing the integrity of the floor slab and the frame structure and preventing local cracking of the floor slab.

[0060] It is foreseeable that the number of partial composite panels 3 enclosed around a prefabricated PEC column 1 can be two, four, or even more. When there are two partial composite panels 3 enclosed around a prefabricated PEC column 1, it is sufficient to connect a horizontal beam 2 to each of the two opposite sides of the prefabricated PEC column 1; when there are four partial composite panels 3 enclosed around a prefabricated PEC column 1, a horizontal beam 2 is connected to each of the four sides of the prefabricated PEC column 1. Therefore, when there are multiple partial composite panels 3 enclosed around a prefabricated PEC column 1, it is sufficient to connect a corresponding number of horizontal bars to the sides of the prefabricated PEC column 1. The specific situation can be determined according to actual construction needs.

[0061] The contents described above can be implemented individually or in combination in various ways, and these variations are all within the protection scope of the present invention.

[0062] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0063] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some of the technical features may be replaced with equivalents; such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A connection node structure between a partially laminated plate and a PEC column, characterized by: It comprises a vertically supported prefabricated PEC column (1), a beam (2) horizontally connected to the prefabricated PEC column (1), a partial composite plate (3) laid on the beam (2), wherein when the partial composite plate (3) is laid on the beam (2), the prefabricated PEC column (1) is located on one side of the partial composite plate (3), and a connection assembly for fixedly connecting the end of the partial composite plate (3) to the prefabricated PEC column (1); The end of the partial composite plate (3) is provided with a stepped structure (31), and the connection assembly comprises a concrete post-cast strip (4) filled between the stepped structure (31), the crossbeam (2) and the prefabricated PEC column (1); The end of the partial composite plate (3) is provided with a plate reinforcement (32) extending from the step-shaped structure (31), and the concrete post-cast strip (4) covers the plate reinforcement (32) when it is filled between the step-shaped structure (31), the beam (2) and the prefabricated PEC column (1); The connection assembly further includes distribution bars (5) laid between the stepped structure (31) and the prefabricated PEC column (1), and the concrete post-cast strip (4) covers the distribution bars (5) when it is filled between the stepped structure (31), the beam (2) and the prefabricated PEC column (1); The connection assembly further includes a reinforcement member (6) having one end fixedly connected to the prefabricated PEC column (1) and the other end fixedly connected to the plate reinforcement (32); when the concrete post-cast strip (4) is filled between the stepped structure (31), the crossbeam (2) and the prefabricated PEC column (1), the reinforcement member (6) is covered; The reinforcement member (6) comprises a cover plate (61) whose back is fixedly connected to the prefabricated PEC column (1), and a reinforcement rib (62) whose one end is fixedly connected to the front of the cover plate (61) and the other end is fixedly connected to the plate rib (32). The cover plate (61) and the reinforcement rib (62) are covered by a concrete post-cast strip (4) filled between the step-shaped structure (31), the crossbeam (2) and the prefabricated PEC column (1).

2. The connection node structure of a partially laminated plate and a PEC column according to claim 1, characterized in that: The two ends of the back side of the cover plate (61) are fixedly connected to the wing plates of the main steel member of the prefabricated PEC column (1). The reinforcement member (6) further comprises an anchor bar (63) having one end fixedly connected to the middle portion of the back side of the cover plate (61). The anchor bar (63) is located between the concrete filled in the main steel member of the prefabricated PEC column (1).

3. The connection node structure of a partially laminated plate and a PEC column according to claim 1, characterized in that: The sealing plate (61) is provided with a through hole (611), and the reinforcement member (6) further comprises a sleeve (64) having one end fixedly connected to the web of the main steel member of the prefabricated PEC column (1) and the other end flush with the outer side surface of the concrete filled in the main steel member of the prefabricated PEC column (1), a threaded hole penetrating the sleeve (64) is provided at the end flush with the outer side surface of the concrete, a screw rod (65) having one end penetrating the through hole (611) and screwed to the threaded hole, and a limiting nut (66) sleeved on the screw rod (65).

4. The connection node structure of a partially laminated plate and a PEC column according to claim 3, characterized in that: The through hole (611) is a strip-shaped through hole (611).

5. The connection node structure of a partially laminated plate and a PEC column according to claim 1, characterized in that: The four cross beams (2) are horizontally connected to the four side surfaces of the prefabricated PEC column (1), the four partial composite plates (3) are laid on two adjacent cross beams (2) at both ends, the distribution ribs (5) are laid between the stepped structures (31) of the four partial composite plates (3) and the prefabricated PEC column (1), and the distribution ribs (5) are fixedly connected to the plate ribs (32) of the four partial composite plates (3).

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