Prefabricated column joint connecting structure, supporting column structure and supporting column construction method

Abstract

The invention belongs to the technical field of constructional engineering, and discloses a prefabricated column joint connecting structure and a supporting column structure. The prefabricated column joint connecting structure is used for connecting two middle stand columns and comprises a first connecting component and a second connecting component, the first connecting component comprises a first end plate, a top end plate and a first side surrounding plate, and a first inner cavity is defined by the first end plate, the first side surrounding plate and the top end plate; the second connecting component comprises a second end plate and a bottom end plate, a second side surrounding plate is connected between the second end plate and the bottom end plate, the bottom end plate is used for being connected with a middle stand column on the lower layer, the second end plate is connected with the first end plate through a bolt, and the second end plate, the second side surrounding plate and the bottom end plate define a second inner cavity; matching seams exist between the first side surrounding plate and the middle-layer beam plate, between the second side surrounding plate and the middle-layer beam plate, and upper pouring openings are formed in the first side surrounding plate and the second side surrounding plate. The prefabricated column joint connecting structure is simple in structure, high in construction efficiency and capable of improving the supporting strength and the supporting stability.

Description

Technical Field

[0001] The present invention relates to the technical field of building engineering, and in particular to a prefabricated column node connection structure and a supporting column structure. Background Art

[0002] When using the reverse construction method for underground construction, it is necessary to assemble the prefabricated central columns underground in advance to provide support for the structures of each floor of the building. The reverse construction method can save a lot of support structures, but the connection strength between the prefabricated central columns of each floor and between the central columns and the cast-in-place piles of the bottom floor is often difficult to meet the target requirements. At the same time, the connection strength between the prefabricated central columns of each floor and the connection nodes between the central columns and the cast-in-place piles of the bottom floor and the beam-slab is also insufficient.

[0003] Therefore, it is urgent to design a prefabricated column node connection structure to solve the above-mentioned technical problems existing in the prior art. Summary of the invention

[0004] The object of the present invention is to provide a prefabricated column node connection structure and a supporting column structure, which have a simple structure, high construction efficiency, and can improve supporting strength and supporting stability.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] The prefabricated column node connection structure is used to connect two vertically adjacent neutral columns, and the prefabricated column node connection structure includes:

[0007] A first connecting member includes a first end plate and a top plate arranged at intervals in a vertical direction, a first side panel is connected between the first end plate and the top plate, the top plate is used to be connected to the center pillar of the upper layer, and the first end plate, the first side panel and the top plate are surrounded to form a first inner cavity;

[0008] The second connecting member comprises a second end plate and a bottom end plate arranged along a vertical interval, a second side panel is connected between the second end plate and the bottom end plate, the bottom end plate is used to be connected to the center column of the lower layer, the second end plate is abutted against the first end plate and connected by bolts, and the second end plate, the second side panel and the bottom end plate are surrounded to form a second inner cavity;

[0009] There are matching seams between the first side panel, the second side panel and the middle layer beam plate, the first side panel and the second side panel have upper pouring ports, the matching seams are connected to the first inner cavity through the upper pouring ports of the first side panel, and the matching seams are connected to the second inner cavity through the upper pouring ports of the second side panel;

[0010] The first side panel and the second side panel are both provided with upper anchor holes, the upper anchor hole on the first side panel is connected with the first inner cavity, the upper anchor hole on the second side panel is connected with the second inner cavity, and the upper anchor holes are used for the steel bars of the middle layer beam plate to pass through.

[0011] Preferably, the first connecting member also includes a first partition plate vertically spaced on the first side panel, the first partition plate vertically divides the first inner cavity into a plurality of first partition spaces, and a first flow hole is provided on the first partition plate, the first flow hole is used to connect two adjacent first partition spaces.

[0012] Preferably, the second connecting member also includes a second partition plate vertically spaced apart on the second side panel, the second partition plate vertically divides the second inner cavity into a plurality of second partition spaces, and a second flow hole is provided on the second partition plate, the second flow hole is used to connect two adjacent second partition spaces.

[0013] Preferably, first supporting ribs are provided between two adjacent first partitions, between the top end plate and the adjacent first partition, and between the first end plate and the adjacent first partition;

[0014] Second supporting ribs are arranged between two adjacent second partitions, between the bottom end plate and the adjacent second partition, and between the second end plate and the adjacent second partition.

[0015] Preferably, bolt through holes are formed on the first end plate and the second end plate, and vertical reinforcing ribs are provided around the bolt through holes on the first end plate and the second end plate, and ends of the reinforcing ribs are fixedly connected to the adjacent first partition plate or the second partition plate.

[0016] Preferably, a first docking hole is formed on the first end plate, and a second docking hole is formed on the second end plate. The second docking hole is arranged opposite to the first docking hole, and both the first docking hole and the second docking hole are used for circulating concrete.

[0017] The support column structure includes a plurality of vertically arranged middle columns and the above-mentioned prefabricated column node connection structure, and also includes:

[0018] Cast-in-place pile main reinforcement, the cast-in-place pile main reinforcement is connected to the middle column main reinforcement of the middle column at the bottom layer;

[0019] The third connecting member is buried in the middle column of the bottom layer, and is used to connect the steel bars of the bottom layer beams and slabs.

[0020] Preferably, the third connecting member comprises a third end plate and a column end plate arranged at intervals along the vertical direction, a third side panel is connected between the third end plate and the column end plate, the column end plate is used to be connected to the bottommost center column, the third end plate, the third side panel and the column end plate are arranged to form a third inner cavity, a lower pouring port is provided on the third side panel, and the lower pouring port is communicated with the third inner cavity;

[0021] The third side enclosure plate is provided with a lower anchor hole, the lower anchor hole is communicated with the third inner cavity, and the lower anchor hole is used for the steel bars of the bottom beam plate to pass through.

[0022] Preferably, the interior of the neutral column has a grouting channel, and the supporting column structure also includes a first grouting sleeve, a second grouting sleeve and a third grouting sleeve, the first grouting sleeve, the second grouting sleeve and the third grouting sleeve are respectively inserted into the first connecting member, the second connecting member and the third connecting member, the grouting channel, the first grouting sleeve, the second grouting sleeve and the third grouting sleeve are all arranged vertically opposite each other, the first grouting sleeve is used to be connected to the concrete pouring equipment, and the third grouting sleeve is arranged opposite to the pile hole formed by the main reinforcement of the bored pile.

[0023] Preferably, the first grouting sleeve is arranged in the first inner cavity, the second grouting sleeve is arranged in the second inner cavity, and the third grouting sleeve is arranged in the third inner cavity. The first grouting sleeve, the second grouting sleeve and the third grouting sleeve are all provided with side flow holes for circulating concrete.

[0024] The beneficial effects of the present invention are:

[0025] The prefabricated column node connection structure provided by the present invention comprises a first connecting member and a second connecting member. Since the first connecting member has a first end plate and the second connecting member has a second end plate, the first end plate is abutted against the second end plate and connected by bolts, so that two vertically adjacent middle columns are fixedly connected by the first connecting member and the second connecting member; the first end plate, the first side panel and the top end plate are surrounded to form a first inner cavity, the second end plate, the second side panel and the bottom end plate are surrounded to form a second inner cavity, and upper pouring openings are opened on both the first side panel and the second side panel, and the matching seams are respectively connected to the first through the upper pouring openings. The inner cavity and the second inner cavity are connected. At the same time, since the first side panel and the second side panel are both provided with upper anchor holes for the steel bars of the middle layer beam and slab to pass through, the upper anchor holes are connected with the first inner cavity and the second inner cavity. Therefore, the construction personnel can pour concrete into the first inner cavity and the second inner cavity through the matching seam to realize the anchor connection between the middle layer beam and slab and the first connecting member and the second connecting member. At the same time, the poured concrete tightly wraps the first connecting member and the second connecting member in the matching seam, thereby improving the connection strength between the two, thereby ensuring the effective and reliable connection between the upper and lower center columns and the middle layer beam and slab.

[0026] The support column structure provided by the present invention adopts the above-mentioned prefabricated column node connection structure and uses a large number of prefabricated structures, which shortens the on-site construction time and improves the construction efficiency. In addition, each connection node of the support column structure and each layer of beams and slabs are integrally cast by concrete, which greatly improves the connection strength and connection stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a front view of a support column structure provided in a specific embodiment of the present invention;

[0028] Figure 2 is a top view of a support column structure provided in a specific embodiment of the present invention;

[0029] Figure 3 yes Figure 2 AA section view of the precast column node connection structure;

[0030] Figure 4 yes Figure 2 BB section view of the precast column node connection structure;

[0031] Figure 5 yes Figure 3 CC section view in;

[0032] Figure 6 yes Figure 3 DD section view in;

[0033] Figure 7 yes Figure 3 EE cross-sectional view in;

[0034] Figure 8 yes Figure 2 AA sectional view of the third connecting member;

[0035] Fig. 9 yes Figure 8 FF cross-sectional view in.

[0036] In the figure:

[0037] 100-central column; 110-central column main reinforcement;

[0038] 200- cast-in-place pile main reinforcement;

[0039] 1-first connecting member; 11-first end plate; 111-reinforcement rib; 12-top plate; 13-first side panel; 131-upper pouring port; 132-upper anchor hole; 14-first partition plate; 141-first flow hole; 15-first support rib;

[0040] 2-second connecting member; 21-second end plate; 22-bottom end plate; 23-second side panel; 24-second partition plate; 241-second flow hole; 25-second supporting rib;

[0041] 3-third connecting member; 31-third end plate; 32-column end plate; 33-third side panel; 331-lower pouring port; 332-lower anchor hole; 34-third partition plate; 341-third flow hole; 35 third supporting rib;

[0042] 4-first grouting casing; 41-side flow hole;

[0043] 5-Second grouting casing;

[0044] 6-Third grouting casing. DETAILED DESCRIPTION

[0045] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0046] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0048] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0049] like Figures 1 to 7As shown, the present invention provides a prefabricated column node connection structure for connecting two vertically adjacent center columns 100, the prefabricated column node connection structure includes a first connection member 1 and a second connection member 2, the first connection member 1 includes a first end plate 11 and a top plate 12 arranged along a vertical interval, a first side panel 13 is connected between the first end plate 11 and the top plate 12, the top plate 12 is used to connect with the center column 100 of the upper layer, the first end plate 11, the first side panel 13 and the top plate 12 are surrounded to form a first inner cavity; the second connection member 2 includes a second end plate 21 and a bottom end plate 22 arranged along a vertical interval, a second side panel 23 is connected between the second end plate 21 and the bottom end plate 22, the bottom end plate 22 is used to connect with the center column 100 of the lower layer, the second end plate 2 1 is in contact with the first end plate 11 and connected by bolts, and the second end plate 21, the second side panel 23 and the bottom end plate 22 are surrounded to form a second inner cavity; there are matching seams between the first side panel 13, the second side panel 23 and the middle layer beam plate, and the first side panel 13 and the second side panel 23 are provided with upper pouring ports 131, and the matching seams are communicated with the first inner cavity through the upper pouring ports 131 of the first side panel 13, and the matching seams are communicated with the second inner cavity through the upper pouring ports 131 of the second side panel 23; upper anchor holes 132 are opened on the first side panel 13 and the second side panel 23, and the upper anchor holes 132 on the first side panel 13 are communicated with the first inner cavity, and the upper anchor holes 132 on the second side panel 23 are communicated with the second inner cavity, and the upper anchor holes 132 are used for the steel bars of the middle layer beam plate to pass through. In this embodiment, when building an underground station by the reverse construction method, it is necessary to connect the prefabricated central columns 100 of the station, and at the same time, the middle layer beams and plates need to be connected at the connection nodes of the central columns 100; since the first connecting member 1 has a first end plate 11 and the second connecting member 2 has a second end plate 21, the first end plate 11 and the second end plate 21 are abutted against and connected by bolts, so the two vertically adjacent central columns 100 are fixedly connected by the first connecting member 1 and the second connecting member 2; the first end plate 11, the first side panel 13 and the top end plate 12 are arranged to form a first inner cavity, the second end plate 21, the second side panel 23 and the bottom end plate 22 are arranged to form a second inner cavity, and the first side panel 13 and the second side panel 23 are both provided with There is an upper pouring port 131, and the matching seam is connected with the first inner cavity and the second inner cavity respectively through the upper pouring port 131. At the same time, since the first side panel 13 and the second side panel 23 are both provided with upper anchor holes 132 for the steel bars of the middle layer beam and slab to pass through, the upper anchor holes 132 are connected with the first inner cavity and the second inner cavity. Therefore, the construction personnel can pour concrete into the first inner cavity and the second inner cavity through the matching seam to realize the anchor connection between the middle layer beam and slab and the first connecting member 1 and the second connecting member 2. At the same time, the poured concrete tightly wraps the first connecting member 1 and the second connecting member 2 in the matching seam, thereby improving the connection strength between the two, thereby ensuring the effective and reliable connection between the upper and lower center columns 100 and the middle layer beam and slab.

[0050] Specifically, the center column 100 is a prefabricated part. When manufacturing the center column 100, the construction workers anchor the first connecting member 1 and the second connecting member 2 into the center column 100 through steel bars respectively. After the center column 100 is manufactured and formed, the first connecting member 1 and the second connecting member 2 are fixed on the two center columns 100 respectively; then the construction workers use bolts to connect the first connecting member 1 and the second connecting member 2, so that the two upper and lower adjacent center columns 100 and the first connecting member 1 and the second connecting member 2 form a whole. Then the construction workers hoist the assembled whole structure into the pre-dug pile hole; then the reverse construction method is used to carry out the construction of the underground station. When the construction reaches the two adjacent center columns, When connecting the columns 100, the middle layer beams and slabs are assembled at the precast column node connection structure, and the steel bars of the middle layer beams and slabs are inserted in the upper anchor holes 132; it can be understood that the cross-sections of the first connecting member 1 and the second connecting member 2 are both square, and the middle layer beams and slabs surround the precast column node connection structure in the middle, and form a matching seam between the two. The construction workers pour concrete into the precast column node connection structure through the matching seam, and the concrete flows into and fills the pouring port 131, the first inner cavity, the second inner cavity and the upper anchor hole 132 where the middle layer beams and slabs steel bars are inserted through the matching seam, thereby casting the middle layer beams and slabs, the precast column node connection structure and the upper and lower middle columns 100 into a whole.

[0051] Furthermore, if Figures 3 to 5 As shown, the first connecting member 1 also includes a first partition 14 arranged on the first side panel 13 along the vertical interval, the first partition 14 divides the first inner cavity into a plurality of first partition spaces along the vertical interval, and a first flow hole 141 is opened on the first partition 14, and the first flow hole 141 is used to connect two adjacent first partition spaces. In this embodiment, the first connecting member 1 is a rectangular parallelepiped structure, the first side panel 13 includes four side panels perpendicular to each other, and an upper pouring port 131 exists between two adjacent side panels; a plurality of first partitions 14 are arranged vertically at intervals inside the first connecting member 1, and each side of the first partition 14 is connected to the four side panels respectively to form a supporting structure inside the first connecting member 1, which greatly improves the structural strength and rigidity of the first connecting member 1, thereby ensuring the bearing capacity of the center column 100; specifically, the first partition 14 is provided with a first flow hole 141 for concrete flow, so that the cast-in-place concrete can flow more quickly and completely inside the first connecting member 1, so as to speed up the construction progress and ensure the quality of concrete pouring.

[0052] Specifically, Figure 3 , Figure 4 as well as Figure 7As shown, the second connecting member 2 also includes a second partition plate 24 vertically spaced apart on the second side panel 23, the second partition plate 24 vertically divides the second inner cavity into a plurality of second partition spaces, and the second partition plate 24 is provided with a second flow hole 241, which is used to connect two adjacent second partition spaces. In this embodiment, the second connecting member 2 and the first connecting member 1 are both rectangular structures, and the second side panel 23 includes four side panels perpendicular to each other, and an upper casting port 131 exists between two adjacent side panels; a plurality of second partitions 24 are arranged at vertical intervals inside the second connecting member 2, and each side of the second partition 24 is respectively connected to the four side panels to form a supporting structure inside the second connecting member 2, thereby further improving the rigidity of the structural strength of the second connecting member 2, thereby ensuring the bearing capacity of the center column 100; specifically, a second flow hole 241 for concrete flow is opened on the second partition 24, so that the poured concrete can flow more quickly and completely inside the second connecting member 2, thereby speeding up the construction progress and ensuring the quality of concrete pouring.

[0053] Specifically, Figures 5 to 7 As shown, first supporting ribs 15 are provided between two adjacent first partitions 14, between the top end plate 12 and the adjacent first partition 14, and between the first end plate 11 and the adjacent first partition 14; second supporting ribs 25 are provided between two adjacent second partitions 24, between the bottom end plate 22 and the adjacent second partition 24, and between the second end plate 21 and the adjacent second partition 24. In this embodiment, the first inner cavity is divided into a plurality of first partition spaces by the first partition plate 14, and a first supporting rib 15 is arranged in the first partition space, that is, vertical first supporting ribs 15 are arranged between the top plate 12 and the first partition plate 14, between two vertically adjacent first partition plates 14, and between the first partition plate 14 and the first end plate 11, and the first supporting ribs 15 are used to support the first partition plate 14 and the top plate 12, thereby further improving the bearing capacity of the structural strength of the first connecting member 1; similarly, a second supporting rib 25 is arranged in the second inner cavity, and the second supporting rib 25 is used to support the second partition plate 24 and the second end plate 21, thereby further improving the bearing capacity of the structural strength of the second connecting member 2.

[0054] Specifically, Figure 3 and Figure 6As shown, bolt through holes are provided on the first end plate 11 and the second end plate 21, and vertical reinforcing ribs 111 are provided around the bolt through holes on the first end plate 11 and the second end plate 21, and the ends of the reinforcing ribs 111 are fixedly connected to the adjacent first partition plate 14 or the second partition plate 24. In this embodiment, the first partition plate 14 divides the vertical first side enclosure plate 13 into a plurality of first side enclosure plates 13 corresponding to a plurality of first partition spaces, that is, each first partition space has a corresponding first side enclosure plate 13; bolt through holes are provided on the edge of the first end plate 11; the four side plates of the first side enclosure plate 13 on the first end plate 11 are bent around the bolt through holes to form reinforcing ribs 111, and the cross-section of the reinforcing ribs 111 can be triangular or L-shaped, which is not limited here, and the reinforcing ribs 111 can enhance the structural strength at the bolt through holes to prevent stress concentration and damage after tightening the bolts. It can be understood that the structure and function of the reinforcing ribs 111 on the second end plate 21 are the same as those of the reinforcing ribs 111 on the first end plate 11 .

[0055] Furthermore, if Figure 6 As shown, a first docking hole is provided on the first end plate 11, and a second docking hole is provided on the second end plate 21. The second docking hole is arranged opposite to the first docking hole, and both the first docking hole and the second docking hole are used to circulate concrete. In this embodiment, a first docking hole is provided on the first end plate 11, and a second docking hole is provided on the second end plate 21. Both the first docking hole and the second docking hole are used to circulate concrete. The first docking hole and the second docking hole can cooperate with the upper pouring openings 131 on the first side panel 13 and the second side panel 23, so that the concrete slurry can quickly flow from the first connecting member 1 to the inside of the second connecting member 2, speeding up the speed of concrete filling the entire prefabricated column node connection structure, thereby speeding up the construction progress and ensuring the quality of concrete pouring.

[0056] like Figure 1 and Figure 8As shown, the present invention also provides a support column structure, which includes a plurality of vertically arranged central columns 100 and the above-mentioned prefabricated column node connection structure, and the support column structure also includes cast-in-place pile main reinforcement 200 and a third connecting member 3, the cast-in-place pile main reinforcement 200 is connected to the central column main reinforcement 110 of the bottom central column 100; the third connecting member 3 is buried in the bottom central column 100, and the third connecting member 3 is used to connect the steel bars of the bottom beam slab. In this embodiment, the main body of the support column structure is composed of the bottom cast-in-place pile reinforcement cage, the cast-in-place pile main reinforcement 200 and a plurality of middle columns 100 above, wherein two adjacent middle columns 100 are rigidly connected by a prefabricated column node connection structure, the cast-in-place pile main reinforcement 200 is connected to the middle column main reinforcement 110 of the lowest middle column 100 by a reinforcement connector, and the third connecting member 3 is buried in the lowest middle column 100; specifically, after the support column structure is placed in the pre-dug pile hole, the construction personnel need to cast Build bored piles, and after the bored piles are cast and formed, use the reverse construction method to construct the station; when performing the reverse construction method, the precast column node connection structure is used to connect with the middle layer beam and slab and use concrete to cast an integrated structure, and the third connecting member 3 is used to connect with the steel bars of the bottom layer beam and slab. It should be noted that the middle layer beam and slab and the center column 100 are both prefabricated parts, while the bottom layer beam and slab are cast-in-place structures. After the steel bars of the bottom layer beam and slab are tied and connected with the third connecting member 3, the bottom layer beam and slab can be cast, so that the bottom layer beam and slab and the third connecting member form an integrated structure.

[0057] Furthermore, the third connecting member 3 includes a third end plate 31 and a column end plate 32 arranged along the vertical interval, and a third side panel 33 is connected between the third end plate 31 and the column end plate 32, and the column end plate 32 is used to connect with the bottom center column 100, and the third end plate 31, the third side panel 33 and the column end plate 32 are arranged to form a third inner cavity, and a lower pouring port 331 is opened on the third side panel 33, and the lower pouring port 331 is connected to the third inner cavity; a lower anchor hole 332 is opened on the third side panel 33, and the lower anchor hole 332 is connected to the third inner cavity, and the lower anchor hole 332 is used for the steel bars of the bottom beam slab to pass through. In this embodiment, the third connecting member 3 is a rectangular structure, and the third side panels 33 are four side panels perpendicular to each other, and a lower pouring port 331 is provided between two adjacent side panels; a plurality of third partitions 34 are arranged vertically at intervals inside the third connecting member 3, and each side of the third partition 34 is respectively connected to the four side panels to form a supporting structure inside the third connecting member 3, so as to improve the structural strength and rigidity of the third connecting member 3, thereby ensuring the bearing capacity of the supporting column structure; the third inner cavity is divided into a plurality of third partition spaces by the third partition 34, and each third partition space is provided with a vertical third support Rib 35, the third supporting rib 35 is used to support the column end plate 32 and the third partition plate 34, thereby further improving the structural strength and bearing capacity of the third connecting member 3; a connecting steel bar is welded on the column end plate 32, and the other end of the connecting steel bar is anchored in the prefabricated center column 100, thereby realizing the connection between the center column 100 and the third connecting member 3; specifically, a third flow hole 341 for concrete flow is opened on the third partition plate 34, so that the cast-in-place concrete can flow more quickly and completely inside the third connecting member 3 and fill the third inner cavity, so as to speed up the construction progress and ensure the pouring quality of concrete. Unlike the middle layer of beams and slabs, the bottom layer of beams and slabs is a cast-in-place structure, which requires on-site formwork and casting. The third side panel 33 is provided with lower anchor holes 332, which are used for the steel bars of the bottom layer of beams and slabs to pass through, thereby achieving a preliminary connection between the steel bars of the bottom layer of beams and slabs and the third connecting member 3. After that, the construction workers set up the mold and cast concrete. The concrete will flow into the third inner cavity and fill the lower anchor holes 332 where the steel bars of the bottom layer of beams and slabs are inserted, thereby casting the bottom layer of beams and slabs and the third connecting member 3 into an integrated structure.

[0058] Specifically, Figure 5 , Figure 7 as well as Fig. 9As shown, the interior of the central column 100 is provided with a grouting channel, and the supporting column structure also includes a first grouting sleeve 4, a second grouting sleeve 5 and a third grouting sleeve 6. The first grouting sleeve 4, the second grouting sleeve 5 and the third grouting sleeve 6 are respectively inserted into the first connecting member 1, the second connecting member 2 and the third connecting member 3. The grouting channel, the first grouting sleeve 4, the second grouting sleeve 5 and the third grouting sleeve 6 are all arranged vertically opposite to each other. The first grouting sleeve 4 is used to connect with the concrete pouring equipment, and the third grouting sleeve 6 is arranged opposite to the pile hole formed by the main reinforcement 200 of the bored pile. In this embodiment, before the reverse construction of the station, the construction workers first put the support column structure into the pre-dug pile hole, and then use the concrete pouring equipment on the ground to pour concrete into the grouting channel of the middle column 100. The concrete flows into the main reinforcement 200 of the bored pile at the bottom layer through the grouting channel, the first grouting sleeve 4, the second grouting sleeve 5 and the third grouting sleeve 6, thereby realizing the pouring of the bored pile. Specifically, the first grouting sleeve 4 It is vertically penetrated in the first inner cavity, and its outer wall surface is welded to the top plate 12, the first partition plate 14 and the first end plate 11 from top to bottom respectively. The second grouting sleeve 5 is vertically penetrated in the second inner cavity, and its outer wall surface is welded to the second end plate 21, the second partition plate 24 and the bottom end plate 22 from top to bottom respectively. The third grouting sleeve 6 is vertically penetrated in the third inner cavity, and its outer wall surface is welded to the column end plate 32, the third partition plate 34 and the third end plate 31 from top to bottom respectively.

[0059] Specifically, Figure 5 , Figure 7 as well as Fig. 9 As shown, the first grouting sleeve 4 is arranged in the first inner cavity, the second grouting sleeve 5 is arranged in the second inner cavity, and the third grouting sleeve 6 is arranged in the third inner cavity. The first grouting sleeve 4, the second grouting sleeve 5 and the third grouting sleeve 6 are all provided with side flow holes 41, and the side flow holes 41 are used for circulating concrete. In this embodiment, the side flow hole 41 of the first grouting sleeve 4 is connected to the first inner cavity, the side flow hole of the second grouting sleeve 5 is connected to the second inner cavity, and the side flow hole of the third grouting sleeve 6 is connected to the third inner cavity. Therefore, when pouring concrete at each connection node, the concrete can flow into the first grouting sleeve 4, the second grouting sleeve 5 and the third grouting sleeve 6 through the side flow holes. For example, when using a prefabricated column node connection structure to connect two adjacent neutral columns 100, the cast-in-place concrete will flow into the first inner cavity and the second inner cavity through the fitting seam, and flow into the first grouting sleeve 4 and the second grouting sleeve 5 respectively through the side flow holes 41 on the first grouting sleeve 4 and the second grouting sleeve 5, and finally fill the first grouting sleeve 4 and the second grouting sleeve 5, so that all parts inside and outside the prefabricated column node connection structure are filled with concrete to ensure dense filling, thereby greatly improving the connection strength and connection stability at each connection node of the support column structure.

[0060] Taking a support column structure with two middle columns 100 as an example, the construction process of the support column structure is roughly described as follows:

[0061] First, the central column 100 is prefabricated, and the first connecting member 1 is anchored into the central column 100 of the upper layer. At the same time, the second connecting member 2 and the third connecting member 3 are anchored into the two ends of the central column 100 of the lower layer through steel bars. Then, the first connecting member 1 and the second connecting member 2 are fixedly connected with each other by bolts. Then, the central column main reinforcement 110 of the central column 100 of the lower layer is connected with the cast-in-place pile main reinforcement 200 through a steel bar connector. The cast-in-place pile main reinforcement 200 is tied with a cast-in-place pile steel bar cage. At this time, the support column structure forms a whole connected along the length direction.

[0062] Afterwards, the construction workers lower the above-mentioned support column structure into the pre-dug pile hole. After the position adjustment is completed, the construction workers pass the pipe of the concrete pouring equipment through the grouting channel of the upper center column 100, the first grouting sleeve 4, the second grouting sleeve 5, the grouting channel of the lower center column 100 and the third grouting sleeve 6 in sequence, and extend it into the bottom layer of the cast-in-place pile reinforcement cage for concrete pouring.

[0063] After the bored piles are poured, the construction workers take out the pipes of the concrete pouring equipment from underground, and then start the main construction of the station building in reverse. When the foundation pit is excavated to the precast column node connection structure (i.e., the connection node between the upper center column 100 and the lower center column 100), the middle layer beams and slabs are assembled on the outer layer of the precast column node connection structure, and the steel bars of the middle layer beams and slabs are inserted into the upper anchor holes 132. Concrete is poured through the matching seams, and the concrete flows into the first inner cavity and the second inner cavity through the upper pouring port 131, and flows into the first grouting sleeve 4 and the second grouting sleeve 5 through the side flow hole 41 to fill it tightly.

[0064] After the construction of the middle layer of beams and slabs is completed, the foundation pit is continued to be excavated to the third connecting member 3. The construction workers connect the third connecting member 3 to the steel bars of the bottom layer of beams and slabs through the lower anchor holes 332 on the third connecting member 3, and then cast the bottom layer of beams and slabs with formwork. The poured concrete flows into the third inner cavity through the lower casting port 331, and flows into the third grouting sleeve 6 through the side flow hole 41, and finally fills the entire third connecting member 3, thereby finally completing the construction of the support column structure.

[0065] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Prefabricated column node connection structure, characterized in that: Used to connect two middle columns (100) adjacent to each other in the vertical direction, the prefabricated column node connection structure comprises: A first connecting member (1) comprises a first end plate (11) and a top plate (12) arranged in a vertical interval, a first side panel (13) being connected between the first end plate (11) and the top plate (12), the top plate (12) being used to be connected to the center pillar (100) of the upper layer, and the first end plate (11), the first side panel (13) and the top plate (12) are arranged to form a first inner cavity; A second connecting member (2), comprising a second end plate (21) and a bottom end plate (22) arranged in a vertical interval, a second side panel (23) being connected between the second end plate (21) and the bottom end plate (22), the bottom end plate (22) being used to be connected to the center column (100) of the lower layer, the second end plate (21) being in contact with the first end plate (11) and being connected by bolts, the second end plate (21), the second side panel (23) and the bottom end plate (22) being arranged to form a second inner cavity; There are matching seams between the first side panel (13), the second side panel (23) and the intermediate beam plate, and both the first side panel (13) and the second side panel (23) have upper pouring ports (131). The matching seams are connected to the first inner cavity through the upper pouring ports (131) of the first side panel (13), and the matching seams are connected to the second inner cavity through the upper pouring ports (131) of the second side panel (23); The first side panel (13) and the second side panel (23) are both provided with upper anchor holes (132); the upper anchor holes (132) on the first side panel (13) are connected to the first inner cavity; the upper anchor holes (132) on the second side panel (23) are connected to the second inner cavity; the upper anchor holes (132) are used for the steel bars of the intermediate layer beam plate to pass through.

2. The prefabricated column node connection structure according to claim 1, characterized in that: The first connecting member (1) further comprises a first partition plate (14) vertically spaced apart on the first side panel (13), wherein the first partition plate (14) vertically divides the first inner cavity into a plurality of first partition spaces, and a first flow hole (141) is provided on the first partition plate (14), wherein the first flow hole (141) is used to connect two adjacent first partition spaces.

3. The prefabricated column node connection structure according to claim 2, characterized in that: The second connecting member (2) further comprises a second partition plate (24) vertically spaced apart on the second side panel (23), wherein the second partition plate (24) vertically divides the second inner cavity into a plurality of second partition spaces, and the second partition plate (24) is provided with a second flow hole (241), wherein the second flow hole (241) is used to connect two adjacent second partition spaces.

4. The prefabricated column node connection structure according to claim 3, characterized in that: First supporting ribs (15) are provided between two adjacent first partitions (14), between the top end plate (12) and the adjacent first partition (14), and between the first end plate (11) and the adjacent first partition (14); Second supporting ribs (25) are provided between two adjacent second partition plates (24), between the bottom end plate (22) and an adjacent second partition plate (24), and between the second end plate (21) and an adjacent second partition plate (24).

5. The prefabricated column node connection structure according to claim 3, characterized in that: The first end plate (11) and the second end plate (21) are both provided with bolt through holes, and the first end plate (11) and the second end plate (21) are both provided with vertical reinforcing ribs (111) around the bolt through holes, and the ends of the reinforcing ribs (111) are fixedly connected to the adjacent first partition plate (14) or second partition plate (24).

6. The prefabricated column node connection structure according to claim 1, characterized in that: The first end plate (11) is provided with a first docking hole, and the second end plate (21) is provided with a second docking hole, the second docking hole is arranged opposite to the first docking hole, and the first docking hole and the second docking hole are both used for circulating concrete.

7. The support column structure is characterized in that: The invention comprises a plurality of vertically arranged middle columns (100) and the prefabricated column node connection structure according to any one of claims 1 to 6, and further comprises: A cast-in-place pile main reinforcement (200), wherein the cast-in-place pile main reinforcement (200) is connected to the middle column main reinforcement (110) of the middle column (100) at the bottom layer; A third connecting member (3), wherein the third connecting member (3) is embedded in the middle column (100) at the bottom layer, and the third connecting member (3) is used to connect the steel bars of the bottom layer beam slab.

8. The support column structure according to claim 7, characterized in that: The third connecting member (3) comprises a third end plate (31) and a column end plate (32) arranged at intervals in the vertical direction, a third side panel (33) is connected between the third end plate (31) and the column end plate (32), the column end plate (32) is used to be connected to the bottommost center column (100), the third end plate (31), the third side panel (33) and the column end plate (32) are arranged to form a third inner cavity, a lower pouring port (331) is opened on the third side panel (33), and the lower pouring port (331) is communicated with the third inner cavity; The third side enclosure plate (33) is provided with a lower anchor hole (332), the lower anchor hole (332) is communicated with the third inner cavity, and the lower anchor hole (332) is used for the steel bars of the bottom beam plate to pass through.

9. The support column structure according to claim 8, characterized in that: The center column (100) has a grouting channel inside, and the support column structure also includes a first grouting sleeve (4), a second grouting sleeve (5) and a third grouting sleeve (6). The first grouting sleeve (4), the second grouting sleeve (5) and the third grouting sleeve (6) are respectively inserted into the first connecting member (1), the second connecting member (2) and the third connecting member (3). The grouting channel, the first grouting sleeve (4), the second grouting sleeve (5) and the third grouting sleeve (6) are all arranged vertically opposite to each other. The first grouting sleeve (4) is used to be connected to a concrete pouring device, and the third grouting sleeve (6) is arranged opposite to a pile hole formed by surrounding the main reinforcement (200) of the bored pile.

10. The support column structure according to claim 9, characterized in that: The first grouting sleeve (4) is arranged in the first inner cavity, the second grouting sleeve (5) is arranged in the second inner cavity, and the third grouting sleeve (6) is arranged in the third inner cavity. The first grouting sleeve (4), the second grouting sleeve (5) and the third grouting sleeve (6) are all provided with side flow holes (41), and the side flow holes (41) are used for circulating concrete.

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