Inter-layer PC column connection node structure and building

Abstract

The present disclosure discloses an inter-layer PC column connection node structure and a building. The inter-layer PC column connection node structure includes a butt joint tube I connected to a column I, and studs and a butt joint tube II that are connected to a column II. The butt joint tube I is provided with transverse plates, the transverse plates are provided with insertion holes, the studs are provided with nuts, the butt joint tube I is provided with through holes I, and the butt joint tube II is provided with through holes II. The building adopts the inter-layer PC column connection node structure. The inter-layer PC column connection node structure and the building have the advantages of replacing reinforcing bar connection, achieving convenient and fast mounting, and omitting a formwork and a support, and are suitable for wide use.

Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims the benefit of Chinese Application No. 202520499662.1, filed Mar. 20, 2025, the disclosure of which is incorporated by reference herein in its entirety.DESCRIPTIONTechnical Field

[0002] The present disclosure relates to the technical field of buildings, and specifically, to an inter-layer PC column connection node structure and a building.Background

[0003] A cast-in-place structure has problems such as a long construction period, difficulty in ensuring engineering quality, and difficulty in controlling costs, while a prefabricated structure has certain advantages. The prefabricated structure means that concrete is poured into independent precast columns or precast beams in a factory or another place in advance, and then the precast columns or the precast beams are transported to a construction site, and assembled and lap-jointed into a building structure. In the prefabricated structure, a manner of connection between the precast columns or the precast beams determines overall stability of the structure.

[0004] The prefabricated column structure in the prior art further has the following problems during assembly:

[0005] (1) When the precast beams and precast columns with protruding reinforcing bars intersect at beam and column nodes, the reinforcing bars are very dense, leading to high avoidance difficulty. As a result, concrete in a node core area cannot be compacted by vibration.

[0006] (2) When upper and lower precast columns are connected, there is a high requirement on alignment accuracy of grout sleeves, so that it is difficult to ensure grouting quality.

[0007] (3) A large number of supporting frames need to be arranged at a beam and column mounting site.

[0008] The above-mentioned factors lead to low construction efficiency and increase labor costs. Therefore, the prior art needs to be improved.SUMMARY

[0009] The technical problem to be solved by the present disclosure is that prefabricated column connection in the prior art has many disadvantages. An objective of the present disclosure is to provide an inter-layer PC column connection node structure and a building, to adopt corresponding technical means and have the beneficial effects of replacing reinforcing bar connection, achieving convenient and fast mounting, and omitting a formwork and a support.

[0010] The present disclosure is implemented by the following technical solutions:

[0011] According to a first aspect, the present disclosure provides an inter-layer PC column connection node structure, including a butt joint tube I connected to a column I, and studs and a butt joint tube II that are connected to a column II. The butt joint tube I is provided with transverse plates, the transverse plates are provided with insertion holes for the studs to pass through, the studs are provided with nuts for clamping the transverse plates, the butt joint tube I is provided with through holes I, and the butt joint tube II is provided with through holes II.

[0012] Further, in the present disclosure, the butt joint tube I with the through holes I and the butt joint tube II with the through holes II cooperate to form a vertical steel bar replacing a longitudinal reinforcing bar of a column, and the butt joint tube I with the through holes I and the butt joint tube II with the through holes II cooperate to form a transverse steel bar replacing a transverse stirrup of the column.

[0013] Further, in the present disclosure, the butt joint tube I is butt-welded to the butt joint tube II.

[0014] Further, in the present disclosure, an outer side wall of the butt joint tube I is provided with a rib plate I, an outer side wall of the butt joint tube II is provided with a rib plate II, and the rib plate II is connected to the rib plate I.

[0015] Further, in the present disclosure, the rib plate I extends downward to the outer side wall of the butt joint tube II, and the rib plate I is welded and fastened to the outer side wall of the butt joint tube II.

[0016] Further, in the present disclosure, the rib plate II extends upward to the outer side wall of the butt joint tube I, and the rib plate II is welded and fastened to the outer side wall of the butt joint tube I.

[0017] Further, in the present disclosure, a bottom end of the rib plate I is welded to a top end of the rib plate II.

[0018] Further, in the present disclosure, a side wall of the rib plate I partially overlaps a side wall of the rib plate II, and an overlapping part is welded and fastened.

[0019] Further, in the present disclosure, steel strips are mounted on outer sides of ports of the butt joint tube I and the butt joint tube II close to each other for reinforced welding, and the steel strips include long steel strips and short steel strips.

[0020] Further, in the present disclosure, the inter-layer PC column connection node structure further includes a vertical plate, the vertical plate is fixedly connected to the rib plate I, and the vertical plate is fixedly connected to the rib plate II.

[0021] Further, in the present disclosure, the vertical plate is welded to the rib plate I, and the vertical plate is welded to the rib plate II.

[0022] Further, in the present disclosure, the vertical plate is in bolted connection with the rib plate I, and the vertical plate is in bolted connection with the rib plate II.

[0023] Further, in the present disclosure, the rib plate I and the through holes I are provided in a staggered manner, and the rib plate II and the through holes II are provided in a staggered manner.

[0024] Further, in the present disclosure, the column I is provided with a conical end portion extending into the butt joint tube I.

[0025] Further, in the present disclosure, the column I is provided with longitudinal bars I connected to a tube wall of the butt joint tube I.

[0026] Further, in the present disclosure, the column II is provided with longitudinal bars II connected to a tube wall of the butt joint tube II.

[0027] Further, in the present disclosure, the longitudinal bars I of the column I and the through holes I are provided in a staggered manner.

[0028] Further, in the present disclosure, the longitudinal bars II of the column II and the through holes II are provided in a staggered manner.

[0029] Further, in the present disclosure, n longitudinal bars I are arranged on a single side of the column I, and a single side panel of the butt joint tube I is provided with n−1 columns of vertical through holes I; and n longitudinal bars II are arranged on a single side of the column II, and a single side panel of the butt joint tube II is provided with n−1 columns of vertical through holes II.

[0030] Further, in the present disclosure, the through holes I are distributed at equal intervals in a horizontal direction and a vertical direction.

[0031] Further, in the present disclosure, the through holes II are distributed at equal intervals in a horizontal direction and a vertical direction.

[0032] Further, in the present disclosure, two nuts are correspondingly mounted on one stud, the two nuts are distributed on an upper side and a lower side of the transverse plate, the two nuts cooperate to clamp the transverse plate, and the upper nut is configured as a plate nut.

[0033] Further, in the present disclosure, surfaces of the butt joint tube I and the butt joint tube II are provided as uneven and rough surfaces.

[0034] Further, in the present disclosure, the through holes I and the through holes II are configured as circular holes, square holes, elliptical holes, or elongated holes in form.

[0035] According to a second aspect, the present disclosure further provides a building, including the above-mentioned inter-layer PC column connection node structure.

[0036] Compared with the prior art, the present disclosure has the following advantages and beneficial effects:

[0037] In the inter-layer PC column connection node structure and the building according to the present disclosure, pre-connection is performed through the transverse plates on the butt joint tube I and the studs and the nuts on the column II, and leveling is performed by the nuts, so that the column I can be pre-fastened, to inhibit the column I from toppling, thereby eliminating material and labor costs for on-site support erection, and material costs and labor costs for formwork erection and formwork removal. In addition, a plurality of through holes I are provided in the butt joint tube I and a plurality of through holes II are provided in the butt joint tube II. On the one hand, grout can be poured into the interior through the through holes I and the through holes II, which can achieve tamping easily, and weights of the butt joint tube I and the butt joint tube II can be reduced, thereby saving materials. Moreover, the butt joint tube I and the butt joint tube II are connected through the butt-jointed rib plate I and rib plate II instead of conventional reinforcing bar binding, so that the mounting is more rapid and convenient, thereby greatly improving construction efficiency. The butt joint tube I with the through holes I and the butt joint tube II with the through holes II form the vertical steel bar replacing the longitudinal reinforcing bar of the column, and the butt joint tube I with the through holes I and the butt joint tube II with the through holes II form the transverse steel bar replacing the transverse stirrup of the column. After the butt joint of the column I and the column II, concrete is poured inside and outside the butt joint tube I and the butt joint tube II. After the concrete is solidified, the butt joint tube I and the butt joint tube II that replace reinforcing bars are stressed together with the concrete to provide a good load-bearing capacity of connection nodes.BRIEF DESCRIPTION OF DRAWINGS

[0038] The accompanying drawings described herein are used to provide a further understanding of embodiments of the present disclosure, and constitute a part of the present application, but does not constitute limitations to the embodiments of the present disclosure. In the accompanying drawings:

[0039] FIG. 1 is a schematic diagram of an inter-layer PC column connection node structure according to the present disclosure;

[0040] FIG. 2 is a schematic diagram of a cross section along A-A in FIG. 1;

[0041] FIG. 3 is a schematic diagram of a cross section along B-B in FIG. 1;

[0042] FIG. 4 is a schematic diagram of a connection between a butt joint tube I and a butt joint tube II according to the present disclosure (connecting vertical plates are welded to rib plates);

[0043] FIG. 5 is a schematic diagram of another connection between a butt joint tube I and a butt joint tube II according to the present disclosure (rib plates are welded in a T shape);

[0044] FIG. 6 is a schematic diagram of a butt joint tube I and a butt joint tube II according to the present disclosure (with four columns of holes);

[0045] FIG. 7 is a schematic diagram of a butt joint tube I and a butt joint tube II according to the present disclosure (with two columns of holes);

[0046] FIG. 8 is a schematic diagram of a butt joint tube I and a butt joint tube II according to the present disclosure (with three columns of holes);

[0047] FIG. 9 is a schematic diagram (of butt welding) of an inter-layer PC column connection node structure according Embodiment 5 of the present disclosure;

[0048] FIG. 10 is a schematic diagram (of reinforced welding by short steel strips) of an inter-layer PC column connection node structure according to Embodiment 6 of the present disclosure; and

[0049] FIG. 11 is a schematic diagram (of reinforced welding by long steel strips) of an inter-layer PC column connection node structure according to Embodiment 6 of the present disclosure.

[0050] Reference signs and corresponding parts in the accompanying drawings: 1—butt joint tube I, 101—rib plate I, 102—through hole I, 2—butt joint tube II, 201—rib plate II, 202 through hole II, 3—column I, 301—longitudinal bar I, 302—conical end portion, 4—column II, 401—longitudinal bar II, 5—stud, 501—nut, 502—plate nut, 6—transverse plate, 601—insertion hole, 7—vertical plate, 8—steel strip.DESCRIPTION OF EMBODIMENTS

[0051] To make the objectives, technical solutions, and advantages of the present disclosure clearer, the present disclosure is further described in detail below with reference to embodiments and the accompanying drawing. The schematic implementations of the present disclosure and descriptions thereof are only used to explain the present disclosure, but are not intended to limit the present disclosure. The following detailed description of the embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the present disclosure as claimed, but is merely representative of the selected embodiments of the present disclosure. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without creative efforts shall fall within the protection scope of the present disclosure.

[0052] It should be noted that similar reference numerals and letters indicate similar items in the following accompanying drawings. Therefore, once an item is defined in one accompanying drawing, the item does not need to be further defined and explained in subsequent accompanying drawings. In the description of the embodiments of the present disclosure, it should also be noted that, unless otherwise explicitly specified and limited, the terms, “arrange”, “mount”, and “connect”, should be broadly understood. For example, a connection may be a fixed connection, a detachable connection or an integral connection; may be a mechanical connection or an electrical connection; and may be a direct connection, an indirect connection through an intermediate medium, or internal communication between two elements. A person of ordinary skill in the art may understand specific meanings of the above terms in the present disclosure based on a specific situation.Embodiment 1

[0053] Embodiment 1 provides an inter-layer PC column connection node structure, as shown in FIG. 1 to FIG. 3, with a specific structure described as follows.

[0054] Referring to FIG. 1, the inter-layer PC column connection node structure in Embodiment 1 is used for PC column connection between floors, and mainly includes two parts: a butt joint tube I 1 and a butt joint tube II 2, which are configured to connect an upper column I 3 to a lower column II 4.

[0055] The butt joint tube I 1 and the butt joint tube II 2 may be preferably made of Q355B-grade steel, and the butt joint tube I 1 and the butt joint tube II 2 each may be welded into a square tube (or rectangular tube) by using steel plates on four sides, or made of a profile steel tube with holes on four sides, or directly cut into a circular tube by using a profile steel tube. As shown in FIG. 1, a top end of the butt joint tube I 1 extends into the column I 3 and is embedded and fastened thereto. A plurality of longitudinal bars I 301 are mounted in the column I 3, and lower ends of the longitudinal bars I 301 are fastened to an outer wall of the butt joint tube I 1 by double-sided welding, so that stability of connection between the butt joint tube I 1 and the column I 3 is enhanced after welding.

[0056] Similarly, as shown in FIG. 1 and FIG. 2, the butt joint tube II 2 is mounted at the top of the column II 4, and a bottom end of the butt joint tube II 2 extends into the column II 4 and is embedded and fastened thereto. Longitudinal bars II 401 inside the column II 4 are fastened to an outer wall of the butt joint tube II 2 by double-sided welding. This ensures stability of connection between the butt joint tube II 2 and the column II 4.

[0057] In some implementations of this embodiment, as shown in FIG. 1 and FIG. 3, four studs 5 are embedded and fastened at the top of the column II 4, and top ends of the studs 5 protrude vertically from the top of the column II 4. The studs 5 are located on an outer side of the butt joint tube II 2. Four transverse plates 6 are fixedly mounted at the bottom of the butt joint tube I 1. The transverse plates 6 are provided with insertion holes 601, and the studs 5 pass through the insertion holes 601.

[0058] Further, as shown in FIG. 1 and FIG. 3, two nuts 501 are mounted on each stud 5, and the two nuts 501 are distributed on an upper side and a lower side of the transverse plate 6, with a plate nut 502 on the upper side and a leveling nut 501 on the lower side. The two nuts cooperate to clamp the transverse plate 6 to achieve fastening and leveling, and then adjust verticality of connection between the column I 3 and the column II 4.

[0059] In some implementations of this embodiment, as shown in FIG. 1 and FIG. 3, vertical rib plates I 101 are mounted on an outer side wall of the butt joint tube I 1, and vertical rib plates II 201 are mounted on an outer side wall of the butt joint tube II 2. A number of the rib plates II 201 corresponds to that of the rib plates I 101, and top ends of the rib plates II 201 are aligned with bottom ends of the rib plates I 101. Vertical plates 7 are further mounted, and the vertical plates 7 are attached to surfaces of the rib plates I 101 and the rib plates II 201 that are aligned. The vertical plates 7 may be connected to the rib plates I 101 and the rib plates II 201 by bolts. As shown in FIG. 1, surfaces of the vertical plates 7, the rib plates I 101 and the rib plates II 201 are provided with mounting holes, and the bolts are inserted into the mounting holes to fixedly connect the rib plates I 101 to the rib plates II 201, and then fixedly connect the butt joint tube I 1 to the butt joint tube II 2.

[0060] It should be noted that the rib plates I 101 and the butt joint tube I 1 are integrally formed; and the rib plate II 201 and the butt joint tube II 2 are integrally formed. The vertical rib plates I 101 and rib plates II 201 are vertically aligned with the vertical longitudinal bars I 301 and longitudinal bars II 401, so that the stress is in the same vertical direction, the structural design is more proper, and a use effect is better.

[0061] In some implementations of this embodiment, as shown in FIG. 1, three rows of through holes I 102 are provided in a single side panel of the butt joint tube I 1, and each row has two through holes I 102. Correspondingly, three rows of through holes II 202 are provided in a single side panel of the butt joint tube II 2, and each row has two through holes II 202. Positions of the through holes I 102 and positions of the through holes II 202 are vertically aligned. One row of through holes I 102 at the top of the butt joint tube I 1 is located in the column I 3, and one row of through holes II 202 at the bottom of the butt joint tube II 2 is located in the column II 4.

[0062] As shown in FIG. 1, the butt joint tube I 1 with the through holes I 102 and the butt joint tube II 2 with the through holes II 202 can reduce material costs on the one hand, and can also replace conventional reinforcing bar binding after butt joint, thereby meeting stress and force transmission requirements for an axial force, a bending moment and a shear force at a joint of the column I 3 and the column II 4. The butt joint tube I 1 with the through holes I 102 and the butt joint tube II 2 with the through holes II 202 form a vertical steel bar replacing a longitudinal reinforcing bar of a column, and the butt joint tube I 1 with the through holes I 102 and the butt joint tube II 2 with the through holes II 202 form a transverse steel bar replacing a transverse stirrup of the column.

[0063] Further, as shown in FIG. 1, a bottom end of the column I 3 is provided as a conical end portion 302, and the conical end portion 302 is integrally prefabricated with the column I 3. The conical end portion 302 extends into the butt joint tube I 1. The conical end portion 302 may be in the form of a frustum, a cone, or a pyramid. The slope of the conical end portion 302 should facilitate flowing of concrete for smooth pouring to a top surface. Therefore, in this embodiment, the slope of the conical end portion 302 is 45°to ensure pouring quality. During pouring, the top surface of the concrete is not lower than a slope line at a root of the conical end portion 302, and tops of some through holes I 102 are level with the slope line at the root of the conical end portion 302, to further improve the pouring quality.

[0064] Further, a principle for positions of the through holes I 102 and the through hole II 202 is that the longitudinal bars I 301 and the through holes I 102 are arranged in a staggered manner, and the longitudinal bars II 401 and the through holes II 202 are arranged in a staggered manner to meet requirements for stress stiffness and strength.

[0065] In addition, as shown in FIG. 4 and FIG. 7, when three longitudinal bars I 301 and three longitudinal bars II 401 are arranged on single sides of cross sections of the column I 3 and the column II 4, single side panels of the butt joint tube I 1 and the butt joint tube II 2 are provided with two columns of vertical through holes I 102 and two columns of vertical through holes II 202. As shown in FIG. 5 and FIG. 8, when four longitudinal bars I 301 and four longitudinal bars II 401 are arranged on single sides of cross sections of the column I 3 and the column II 4, single side panels of the butt joint tube I 1 and the butt joint tube II 2 are provided with three columns of vertical through holes I 102 and three columns of vertical through holes II 202. As shown in FIG. 6, when five longitudinal bars I 301 and five longitudinal bars II 401 are arranged on single sides of cross sections of the column I 3 and the column II 4, single side panels of the butt joint tube I 1 and the butt joint tube II 2 are provided with four columns of vertical through holes I 102 and four columns of vertical through holes II 202. To sum up, when n longitudinal bars I 301 and n longitudinal bars II 401 are arranged on single sides of cross sections of the column I 3 and the column II 4, single side panels of the butt joint tube I 1 and the butt joint tube II 2 are provided with n−1 columns of vertical through holes I 102 and n−1 columns of vertical through holes II 202 at equal intervals.

[0066] It should be noted that the through holes I 102 and the through holes II 202 may be in the form of circular holes, square holes, elliptical holes, elongated holes, or the like. The numbers and positions of the through holes I 102 and the through holes II 202 should be determined by comprehensively considering calculation, construction, and connection factors.

[0067] In some implementations of this embodiment, as shown in FIG. 1, to make the butt joint tube I 1 and the butt joint tube II 2 have a better effect of bonding to the poured concrete, surfaces of the butt joint tube I 1 and the butt joint tube II 2 are provided as uneven and rough surfaces. The uneven and rough surfaces increase a contact area and achieve a better bonding effect. It should be noted that sandblasting can be used to make the surfaces of the butt joint tube I 1 and the butt joint tube II 2 uneven.Embodiment 2

[0068] An inter-layer PC column connection node structure in this embodiment is further optimized based on Embodiment 1, with a specific structure described as follows.

[0069] As shown in FIG. 4, in this embodiment, the vertical plates 7 are connected to the rib plates I 101 and the rib plates II 201 by welding and fastening, and the surfaces of the vertical plates 7 are attached to the surfaces of the rib plates I 101 and the rib plates II 201, and then welded and fastened. The vertical plates 7 fixedly connect the rib plates I 101 to the rib plate II 201, to fixedly connect the butt joint tube I 1 to the butt joint tube II 2.Embodiment 3

[0070] An inter-layer PC column connection node structure in this embodiment is further optimized based on Embodiment 1, with a specific structure described as follows.

[0071] In this embodiment, the vertical plates 7 and the rib plates II 201 in Embodiment 1 are omitted, and only the rib plates I 101 are used for fixed connection. As shown in FIG. 5, bottom ends of the rib plates I 101 on the butt joint tube I 1 exceed a bottom end of the butt joint tube I 1. After the butt joint tube I 1 and the butt joint tube II 2 are in butt joint, the rib plates I 101 extend to an outer wall of the butt joint tube II 2, and then the rib plates I 101 are welded to an outer wall of the butt joint tube II 2, to fixedly connect the butt joint tube I 1 to the butt joint tube II 2.Embodiment 4

[0072] An inter-layer PC column connection node structure in this embodiment is further optimized based on Embodiment 1, with a specific structure described as follows.

[0073] In this embodiment, the vertical plates 7 in Embodiment 1 are omitted, and only the rib plates I 101 and the rib plates II 201 are used for fixed connection. As shown in FIG. 6, bottom ends of the rib plates I 101 on the butt joint tube I 1 are aligned with the bottom end of the butt joint tube I 1, and bottom ends of the rib plates II 201 on the butt joint tube II 2 are aligned with the bottom end of the butt joint tube II 2. When the butt joint tube I 1 and the butt joint tube II 2 are in butt joint, the butt joint tube I 1 and the butt joint tube II 2 abut against each other, and the rib plates I 101 and the rib plates II 201 abut against each other, and then are welded, to fixedly connect the butt joint tube I 1 to the butt joint tube II 2.Embodiment 5

[0074] As shown in FIG. 9, an inter-layer PC column connection node structure provided in Embodiment 5 has a specific structure described as follows.

[0075] The inter-layer PC column connection node structure in Embodiment 5 is used for PC column connection between floors, and mainly includes two parts: a butt joint tube I 1 and a butt joint tube II 2, which are configured to connect an upper column I 3 to a lower column II 4.

[0076] The butt joint tube I 1 and the butt joint tube II 2 each may be welded into a square tube (or rectangular tube) by using steel plates on four sides, or made of a profile steel tube with holes on four sides. As shown in FIG. 9, a top end of the butt joint tube I 1 extends into the column I 3 and is embedded and fastened thereto. A plurality of longitudinal bars I 301 are mounted in the column I 3, and lower ends of the longitudinal bars I 301 are fastened to an outer wall of the butt joint tube I 1 by double-sided welding, so that stability of connection between the butt joint tube I 1 and the column I 3 is enhanced after welding.

[0077] Similarly, the butt joint tube II 2 is mounted at the top of the column II 4, and a bottom end of the butt joint tube II 2 extends into the column II 4 and is embedded and fastened thereto. Longitudinal bars II 401 inside the column II 4 are fastened to an outer wall of the butt joint tube II 2 by double-sided welding. This ensures stability of connection between the butt joint tube II 2 and the column II 4.

[0078] In some implementations of this embodiment, four studs 5 are embedded and fastened at the top of the column II 4, and top ends of the studs 5 protrude vertically from the top of the column II 4. The studs 5 are located on an outer side of the butt joint tube II 2. Four transverse plates 6 are fixedly mounted at the bottom of the butt joint tube I 1. The transverse plates 6 are provided with insertion holes 601, and the studs 5 pass through the insertion holes 601.

[0079] Further, two nuts 501 are mounted on each stud 5, and the two nuts 501 are distributed on an upper side and a lower side of the transverse plate 6, with a plate nut 502 on the upper side and a leveling nut 501 on the lower side. The two nuts cooperate to clamp the transverse plate 6 to achieve fastening and leveling, and then adjust verticality of connection between the column I 3 and the column II 4. Ports of the butt joint tube I 1 and the butt joint tube II 2 that are in contact are welded for further reinforcement and fixation.Embodiment 6

[0080] As shown in FIG. 10, an inter-layer PC column connection node structure provided in Embodiment 6 has a specific structure described as follows.

[0081] The inter-layer PC column connection node structure in Embodiment 6 is used for PC column connection between floors, and mainly includes two parts: a butt joint tube I 1 and a butt joint tube II 2, which are configured to connect an upper column I 3 to a lower column II 4.

[0082] The butt joint tube I 1 and the butt joint tube II 2 each may be welded into a square tube (or rectangular tube) by using steel plates on four sides, or made of a profile steel tube with holes on four sides. As shown in FIG. 10, a top end of the butt joint tube I 1 extends into the column I 3 and is embedded and fastened thereto. A plurality of longitudinal bars I 301 are mounted in the column I 3, and lower ends of the longitudinal bars I 301 are fastened to an outer wall of the butt joint tube I 1 by double-sided welding, so that stability of connection between the butt joint tube I 1 and the column I 3 is enhanced after welding.

[0083] Similarly, the butt joint tube II 2 is mounted at the top of the column II 4, and a bottom end of the butt joint tube II 2 extends into the column II 4 and is embedded and fastened thereto. Longitudinal bars II 401 inside the column II 4 are fastened to an outer wall of the butt joint tube II 2 by double-sided welding. This ensures stability of connection between the butt joint tube II 2 and the column II 4.

[0084] In some implementations of this embodiment, four studs 5 are embedded and fastened at the top of the column II 4, and top ends of the studs 5 protrude vertically from the top of the column II 4. The studs 5 are located on an outer side of the butt joint tube II 2. Four transverse plates 6 are fixedly mounted at the bottom of the butt joint tube I 1. The transverse plates 6 are provided with insertion holes 601, and the studs 5 pass through the insertion holes 601.

[0085] Further, two nuts 501 are mounted on each stud 5, and the two nuts 501 are distributed on an upper side and a lower side of the transverse plate 6, with a plate nut 502 on the upper side and a leveling nut 501 on the lower side. The two nuts cooperate to clamp the transverse plate 6 to achieve fastening and leveling, and then adjust verticality of connection between the column I 3 and the column II 4.

[0086] As shown in FIG. 10, steel strips 8 are mounted on outer sides of ports of the butt joint tube I 1 and the butt joint tube II 2 close to each other for reinforced welding. Three shorter steel strips 8 are mounted on each outer side surface of the butt joint tube I 1 and the butt joint tube II 2, and the steel strips 8 are welded to the butt joint tube I 1 and the butt joint tube II 2 by a welding machine to enhance a fixation effect.

[0087] It should be noted that, as shown in FIG. 11, one longer steel strip 8 may alternatively be used on each outer side surface of the butt joint tube I 1 and the butt joint tube II 2 instead of the three shorter steel strips 8 in FIG. 10, and the longer steel strip 8 is welded to the butt joint tube I 1 and the butt joint tube II 2 by the welding machine to enhance a fixation effect.Embodiment 7

[0088] This embodiment provides a building, preferably a prefabricated building. The building in this embodiment adopts the inter-layer PC column connection node structure according to any one or more of Embodiment 1, Embodiment 2, Embodiment 3, and Embodiment 4.

[0089] A principle of the inter-layer PC column connection node structure and the building according to the present disclosure is as follows:

[0090] According to the present disclosure, the butt joint tube I 1 of the column I 3 and the butt joint tube II 2 of the column II 4 are pre-connected by mutual connection between the rib plates I 101 and the rib plates II 201, and are also connected and leveled by the studs 5 and the transverse plates 6, so that the column I 3 can be fastened in advance, to inhibit the column I 3 from toppling. A plurality of through holes I 102 are provided in the butt joint tube I 1 and a plurality of through holes II 202 are provided in the butt joint tube II 2. On the one hand, grout can be poured into the interior through the through holes I 102 and the through holes II 202, and weights of the butt joint tube I 1 and the butt joint tube II 2 can be reduced, so that the mounting is more rapid and convenient, thereby greatly improving construction efficiency. The butt joint tube I 1 with the through holes I 102 and the butt joint tube II 2 with the through holes II 202 form a vertical steel bar replacing a longitudinal reinforcing bar of a column, and the butt joint tube I 1 with the through holes I 102 and the butt joint tube II 2 with the through holes II 202 form a transverse steel bar replacing a transverse stirrup of the column. After the butt joint of the column I 3 and the column II 4, concrete is poured inside and outside the butt joint tube I 1 and the butt joint tube II 2. After the concrete is solidified, the butt joint tube I 1 and the butt joint tube II 2 that replace reinforcing bars are stressed together with the concrete to provide a good load-bearing capacity of connection nodes.

[0091] Therefore, the inter-layer PC column connection node structure and the building according to the present disclosure have the beneficial effects of replacing reinforcing bar connection, achieving convenient and fast mounting, and omitting a formwork and a support.

[0092] The objectives, technical solutions, and beneficial effects of the present disclosure are further described in detail in the above specific implementations. It should be understood that the above described are only specific implementations of the present disclosure and are not intended to limit the protection scope of the present disclosure. Any modification, equivalent replacement, improvement, and the like made within the spirit and principle of the present disclosure should fall within the protection scope of the present disclosure.

Claims

1. An inter-layer PC column connection node structure, comprisinga butt joint tube I (1) connected to a column I (3);studs (5) and a butt joint tube II (2) connected to a column II (4);wherein the butt joint tube I (1) is provided with transverse plates (6), the transverse plates (6) are provided with insertion holes (601) for the studs (5) to pass through, the studs (5) are provided with nuts (501) for clamping the transverse plates (6), the butt joint tube I (1) is provided with through holes I (102), and the butt joint tube II (2) is provided with through holes II (202).

2. The inter-layer PC column connection node structure according to claim 1, wherein the butt joint tube I (1) with the through holes I (102) and the butt joint tube II (2) with the through holes II (202) cooperate to form a vertical steel bar replacing a longitudinal reinforcing bar of a column, and the butt joint tube I (1) with the through holes I (102) and the butt joint tube II (2) with the through holes II (202) cooperate to form a transverse steel bar replacing a transverse stirrup of the column.

3. The inter-layer PC column connection node structure according to claim 1, wherein the butt joint tube I (1) is butt-welded to the butt joint tube II (2).

4. The inter-layer PC column connection node structure according to claim 1, wherein an outer side wall of the butt joint tube I (1) is provided with a rib plate I (101), an outer side wall of the butt joint tube II (2) is provided with a rib plate II (201), and the rib plate II (201) is connected to the rib plate I (101).

5. The inter-layer PC column connection node structure according to claim 4, wherein the rib plate I (101) extends downward to the outer side wall of the butt joint tube II (2), and the rib plate I (101) is welded and fastened to the outer side wall of the butt joint tube II (2).

6. The inter-layer PC column connection node structure according to claim 4, wherein the rib plate II (201) extends upward to the outer side wall of the butt joint tube I (1), and the rib plate II (201) is welded and fastened to the outer side wall of the butt joint tube I (1).

7. The inter-layer PC column connection node structure according to claim 4, wherein a bottom end of the rib plate I (101) is welded to a top end of the rib plate II (201).

8. The inter-layer PC column connection node structure according to claim 4, wherein a side wall of the rib plate I (101) partially overlaps a side wall of the rib plate II (201), and an overlapping part is welded and fastened.

9. The inter-layer PC column connection node structure according to claim 1, wherein steel strips (8) are mounted on outer sides of ports of the butt joint tube I (1) and the butt joint tube II (2) close to each other for reinforced welding, and the steel strips (8) comprise long steel strips (8) and short steel strips (8).

10. The inter-layer PC column connection node structure according to claim 4, wherein the structure further comprises a vertical plate (7), the vertical plate (7) being fixedly connected to the rib plate I (101), and the vertical plate (7) being fixedly connected to the rib plate II (201).

11. The inter-layer PC column connection node structure according to claim 10, wherein the vertical plate (7) is welded to the rib plate I (101), and the vertical plate (7) is welded to the rib plate II (201).

12. The inter-layer PC column connection node structure according to claim 10, wherein the vertical plate (7) is in bolted connection with the rib plate I (101), and the vertical plate (7) is in bolted connection with the rib plate II (201).

13. The inter-layer PC column connection node structure according to claim 4, wherein the rib plate I (101) and the through holes I (102) are provided in a staggered manner, and the rib plate II (201) and the through holes II (202) are provided in a staggered manner.

14. The inter-layer PC column connection node structure according to claim 1, wherein the column I (3) is provided with a conical end portion (302) extending into the butt joint tube I (1).

15. The inter-layer PC column connection node structure according to claim 1, wherein the column I (3) is provided with longitudinal bars I (301) connected to a tube wall of the butt joint tube I (1);the column II (4) is provided with longitudinal bars II (401) connected to a tube wall of the butt joint tube II (2);the longitudinal bars I (301) of the column I (3) and the through holes I (102) are provided in a staggered manner;the longitudinal bars II (401) of the column II (4) and the through holes II (202) are provided in a staggered manner.

16. The inter-layer PC column connection node structure according to claim 15, wherein n longitudinal bars I (301) are arranged on a single side of the column I (3), and a single side panel of the butt joint tube I (1) is provided with n−1 columns of vertical through holes I (102); and n longitudinal bars II (401) are arranged on a single side of the column II (4), and a single side panel of the butt joint tube II (2) is provided with n−1 columns of vertical through holes II (202).

17. The inter-layer PC column connection node structure according to claim 16, wherein the through holes I (102) are distributed at equal intervals in a horizontal direction and a vertical direction;the through holes II (202) are distributed at equal intervals in a horizontal direction and a vertical direction.

18. The inter-layer PC column connection node structure according to claim 1, wherein two nuts (501) are correspondingly mounted on one stud (5), the two nuts (501) are distributed on an upper side and a lower side of the transverse plate (6), the two nuts (501) cooperate to clamp the transverse plate (6), and the upper nut (501) is configured as a plate nut (502).

19. The inter-layer PC column connection node structure according to claim 1, wherein surfaces of the butt joint tube I (1) and the butt joint tube II (2) are provided as uneven and rough surfaces;the through holes I (102) and the through holes II (202) are configured as circular holes, square holes, elliptical holes, or elongated holes in form.

20. A building, comprising the inter-layer PC column connection node structure according to claim 1.

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