Precast column joint connecting structure, support column structure and support column construction method

Abstract

The application belongs to the technical field of building engineering, and discloses a prefabricated column node connecting structure and a supporting column structure. The prefabricated column node connecting structure is used for connecting two middle 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 enclosing plate, and the first end plate, the first side enclosing plate and the top end plate enclose to form a first inner cavity. The second connecting component comprises a second end plate and a bottom end plate, and a second side enclosing plate is connected between the second end plate and the bottom end plate. The bottom end plate is used for connecting with the middle column in the lower layer, the second end plate is connected with the first end plate through bolts, and the second end plate, the second side enclosing plate and the bottom end plate enclose to form a second inner cavity. There are matching seams between the first side enclosing plate, the second side enclosing plate and the middle layer beam plate, and the first side enclosing plate and the second side enclosing plate are provided with upper pouring openings. The prefabricated column node 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 application relates to the technical field of building engineering, and in particular to a prefabricated column joint connecting structure and a supporting column structure. BACKGROUND

[0002] When using the top-down method to construct an underground building, it is necessary to assemble prefabricated intermediate columns in advance in the underground to provide support for the structure of each layer of the building. The top-down method can save a large amount of support structure, but the connection strength between prefabricated intermediate columns of different layers and between the prefabricated intermediate columns and the bottom layer of the cast-in-place pile often cannot meet the target requirements, and the connection strength between the connection joints of the prefabricated intermediate columns of different layers and the cast-in-place pile and the beam plate also has certain deficiencies.

[0003] Therefore, there is an urgent need to design a prefabricated column joint connecting structure to solve the above technical problems in the prior art. SUMMARY

[0004] The present application aims to provide a prefabricated column joint connecting structure and a supporting column structure, which are simple in structure, high in construction efficiency, and can improve the supporting strength and stability.

[0005] To achieve this goal, the present application adopts the following technical solutions:

[0006] The prefabricated column joint connecting structure is used to connect two intermediate columns adjacent in the vertical direction, and comprises:

[0007] A first connecting member comprises a first end plate and a top end plate arranged at intervals in the vertical direction, a first side enclosing plate is connected between the first end plate and the top end plate, the top end plate is used to connect the intermediate column of the upper layer, and the first end plate, the first side enclosing plate and the top end plate form a first inner cavity;

[0008] A second connecting member comprises a second end plate and a bottom end plate arranged at intervals in the vertical direction, a second side enclosing plate is connected between the second end plate and the bottom end plate, the bottom end plate is used to connect the intermediate column of the lower layer, the second end plate abuts against the first end plate and is connected by bolts, the second end plate, the second side enclosing plate and the bottom end plate form a second inner cavity;

[0009] There are matching joints between the first side enclosing plate, the second side enclosing plate and the beam plate of the intermediate layer, the first side enclosing plate and the second side enclosing plate each have an upper pouring opening, the matching joint is communicated with the first inner cavity through the upper pouring opening of the first side enclosing plate, and the matching joint is communicated with the second inner cavity through the upper pouring opening of the second side enclosing plate;

[0010] An upper anchor hole is formed on each of the first side wall and the second side wall, the upper anchor hole on the first side wall is communicated with the first inner cavity, the upper anchor hole on the second side wall is communicated with the second inner cavity, and the upper anchor hole is used for the steel bars of the intermediate layer beam plate to pass through.

[0011] As preferred, the first connecting member further comprises a first partition plate arranged on the first side wall in vertical spacing, the first partition plate vertically divides the first inner cavity into a plurality of first partition spaces, a first flow-through hole is formed on the first partition plate, and the first flow-through hole is used for communicating two adjacent first partition spaces.

[0012] As preferred, the second connecting member further comprises a second partition plate arranged on the second side wall in vertical spacing, the second partition plate vertically divides the second inner cavity into a plurality of second partition spaces, a second flow-through hole is formed on the second partition plate, and the second flow-through hole is used for communicating two adjacent second partition spaces.

[0013] As preferred, a first supporting rib is arranged between two adjacent first partition plates, between the top end plate and an adjacent first partition plate, and between the first end plate and an adjacent first partition plate.

[0014] A second supporting rib is arranged between two adjacent second partition plates, between the bottom end plate and an adjacent second partition plate, and between the second end plate and an adjacent second partition plate.

[0015] As preferred, a bolt through hole is formed on each of the first end plate and the second end plate, a vertical reinforcing rib is arranged around the bolt through hole on each of the first end plate and the second end plate, and an end of the reinforcing rib is fixedly connected with an adjacent first partition plate or second partition plate.

[0016] As preferred, a first butt joint hole is formed on the first end plate, a second butt joint hole is formed on the second end plate, the second butt joint hole is arranged opposite to the first butt joint hole, and each of the first butt joint hole and the second butt joint hole is used for flowing concrete.

[0017] The support column structure comprises a plurality of vertical intermediate columns and the above-mentioned prefabricated column joint connecting structure, and further comprises:

[0018] A bored pile main reinforcement is connected with the intermediate column main reinforcement of the bottommost intermediate column.

[0019] A third connecting member is embedded on the bottommost intermediate column, and the third connecting member is used for connecting the steel bars of a bottom layer beam plate.

[0020] Preferably, the third connecting member comprises a third end plate and a column end plate arranged vertically spaced apart, a third side plate is connected between the third end plate and the column end plate, the column end plate is used for connecting with the middle column of the bottom layer, the third end plate, the third side plate and the column end plate form a third inner cavity, a lower pouring opening is arranged on the third side plate and communicates with the third inner cavity.

[0021] A lower anchor hole is arranged on the third side plate and communicates with the third inner cavity, and the lower anchor hole is used for the steel bars of the bottom layer beam plate to pass through.

[0022] Preferably, the middle column has a grouting channel inside, the support column structure further comprises 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 arranged in 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 arranged vertically opposite, the first grouting sleeve is used for connecting with a concrete pouring device, and the third grouting sleeve is arranged opposite to a pile hole formed by the pile main reinforcement.

[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, side flow holes are arranged on the first grouting sleeve, the second grouting sleeve and the third grouting sleeve, and the side flow holes are used for flowing concrete.

[0024] The present application has the following beneficial effects:

[0025] The prefabricated column node connecting structure provided by the application comprises a first connecting component and a second connecting component, the first connecting component has a first end plate, the second connecting component has a second end plate, the first end plate abuts against the second end plate and is connected through bolts, and therefore two intermediate columns adjacent in the vertical direction are fixedly connected through the first connecting component and the second connecting component; the first end plate, a first side wall plate and a top end plate surround to form a first inner cavity, the second end plate, a second side wall plate and a bottom end plate surround to form a second inner cavity, the first side wall plate and the second side wall plate are both provided with an upper pouring opening, a matching joint is communicated with the first inner cavity and the second inner cavity through the upper pouring opening, and since the first side wall plate and the second side wall plate are both provided with an upper anchor hole through which a steel bar of an intermediate layer beam plate passes, the upper anchor hole is communicated with the first inner cavity and the second inner cavity, therefore, a construction worker can pour concrete into the first inner cavity and the second inner cavity through the matching joint to realize the anchoring connection of the intermediate layer beam plate with the first connecting component and the second connecting component, and the poured concrete tightly wraps the first connecting component and the second connecting component in the matching joint, thereby improving the connecting strength of the two components and ensuring the effective and reliable connection among the two intermediate columns and the intermediate layer beam plate.

[0026] The support column structure provided by the application adopts the above prefabricated column node connecting structure and uses a large number of prefabricated structures to shorten the on-site construction time and improve the construction efficiency, and each connecting node of the support column structure and each layer beam plate are integrally poured and formed by concrete, thereby greatly improving the connecting strength and the connecting stability. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is the front view of the support column structure provided by the embodiment of the application;

[0028] Figure 2 is the top view of the support column structure provided by the embodiment of the application;

[0029] Figure 3 is Figure 2 the A-A sectional view of the prefabricated column node connecting structure in the embodiment;

[0030] Figure 4 is Figure 2 the B-B sectional view of the prefabricated column node connecting structure in the embodiment;

[0031] Figure 5 is Figure 3 the C-C sectional view in the embodiment;

[0032] Figure 6 is Figure 3 the D-D sectional view in the embodiment;

[0033] Figure 7 is Figure 3 the E-E sectional view in the embodiment;

[0034] Figure 8 is Figure 2 A-A sectional view of the third connecting member in

[0035] Figure 9 is Figure 8 F-F sectional view in

[0036] in the drawings:

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

[0038] 200 - bored pile main reinforcement;

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

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

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

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

[0043] 5 - second grouting sleeve;

[0044] 6 - third grouting sleeve. DETAILED DESCRIPTION

[0045] The application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are intended to be merely illustrative of the application and not in limitation thereof. It should also be noted that, for the purpose of description, only the parts related to the application are shown in the drawings, rather than all the parts.

[0046] In the description of the application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0047] In the present application, unless otherwise explicitly specified and limited, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of a first feature to a second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. "Under", "below" and "underneath" of a first feature to a second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0048] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0049] As Figures 1 to 7As shown, the present application provides a prefabricated column joint connecting structure for connecting two vertically adjacent intermediate columns 100, which comprises a first connecting member 1 and a second connecting member 2. The first connecting member 1 comprises a first end plate 11 and a top end plate 12 arranged vertically spaced apart, and a first side plate 13 connected between the first end plate 11 and the top end plate 12, wherein the top end plate 12 is used for connecting with the intermediate column 100 of the upper layer, and the first end plate 11, the first side plate 13 and the top end plate 12 form a first inner cavity; the second connecting member 2 comprises a second end plate 21 and a bottom end plate 22 arranged vertically spaced apart, and a second side plate 23 connected between the second end plate 21 and the bottom end plate 22, wherein the bottom end plate 22 is used for connecting with the intermediate column 100 of the lower layer, and the second end plate 21 abuts against the first end plate 11 and is connected by bolts, and the second end plate 21, the second side plate 23 and the bottom end plate 22 form a second inner cavity; there is a matching joint between the first side plate 13, the second side plate 23 and the intermediate layer beam plate, and the first side plate 13 and the second side plate 23 are both provided with an upper pouring opening 131, the matching joint is communicated with the first inner cavity through the upper pouring opening 131 of the first side plate 13, and the matching joint is communicated with the second inner cavity through the upper pouring opening 131 of the second side plate 23; the first side plate 13 and the second side plate 23 are both provided with an upper anchor hole 132, the upper anchor hole 132 of the first side plate 13 is communicated with the first inner cavity, and the upper anchor hole 132 of the second side plate 23 is communicated with the second inner cavity, and the upper anchor hole 132 is used for the steel bars of the intermediate layer beam plate to pass through. In this embodiment, when the underground station is constructed by the top-down method, the prefabricated intermediate columns 100 of the station need to be connected, and the intermediate layer beam plate also needs to be connected at the connecting joint of the intermediate columns 100. Since the first connecting member 1 has the first end plate 11, the second connecting member 2 has the second end plate 21, and the first end plate 11 abuts against the second end plate 21 and is connected by bolts, the two vertically adjacent intermediate 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 plate 13 and the top end plate 12 form the first inner cavity, the second end plate 21, the second side plate 23 and the bottom end plate 22 form the second inner cavity, the first side plate 13 and the second side plate 23 are both provided with the upper pouring opening 131, the matching joint is communicated with the first inner cavity and the second inner cavity through the upper pouring opening 131 respectively, and since the first side plate 13 and the second side plate 23 are both provided with the upper anchor hole 132 for the steel bars of the intermediate layer beam plate to pass through, the upper anchor hole 132 is communicated with the first inner cavity and the second inner cavity, so the construction personnel can pour concrete into the first inner cavity and the second inner cavity through the matching joint to realize the anchoring connection of the intermediate layer beam plate with the first connecting member 1 and the second connecting member 2, and the poured concrete tightly wraps the first connecting member 1 and the second connecting member 2 in the matching joint, thereby improving the connection strength of the two, so as to ensure the effective and reliable connection among the two intermediate columns 100 and the intermediate layer beam plate.

[0050] Specifically, the middle column 100 is a prefabricated piece, when the middle column 100 is manufactured, the first connecting member 1 and the second connecting member 2 are respectively anchored into the middle column 100 by the reinforcement, after the middle column 100 is manufactured into a shape, the first connecting member 1 and the second connecting member 2 are respectively fixed on two middle columns 100; then the construction personnel use bolts to connect the first connecting member 1 and the second connecting member 2, so that the two adjacent middle columns 100 and the first connecting member 1 and the second connecting member 2 form an integral whole, and then the construction personnel hoist the assembled integral structure into the pile hole which is excavated in advance; then the underground station is constructed by using the top-down method, when the adjacent two middle columns 100 are connected, the intermediate layer beam plate is assembled at the prefabricated column node connecting structure, and the reinforcement of the intermediate layer beam plate is inserted into the upper anchor hole 132; it can be understood that the cross section of the first connecting member 1 and the second connecting member 2 is square, the intermediate layer beam plate surrounds the prefabricated column node connecting structure in the middle and forms a matching joint between the two, and the construction personnel pours concrete into the prefabricated column node connecting structure through the matching joint, the concrete flows into and fills the upper pouring opening 131, the first inner cavity, the second inner cavity and the upper anchor hole 132 in which the reinforcement of the intermediate layer beam plate is inserted, so as to pour the intermediate layer beam plate, the prefabricated column node connecting structure and the upper and lower middle columns 100 into an integral whole.

[0051] Further, as shown in Figures 3 to 5 , the first connecting member 1 further comprises a first partition plate 14 which is vertically and spacedly arranged on the first side wall 13, the first partition plate 14 vertically divides the first inner cavity into a plurality of first partition spaces, and a first flow-through hole 141 is formed in the first partition plate 14, the first flow-through hole 141 is used to connect two adjacent first partition spaces. In this embodiment, the first connecting member 1 is a cuboid structure, the first side wall 13 comprises four side plates which are perpendicular to each other, and the upper pouring opening 131 is formed between two adjacent side plates; a plurality of first partition plates 14 are vertically and spacedly arranged in the first connecting member 1, and each side of the first partition plate 14 is connected with the four side plates to form a support structure in 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 middle column 100; specifically, the first flow-through hole 141 is formed in the first partition plate 14 for the flow of concrete, so that the cast-in-place concrete can flow more quickly and completely in the interior of the first connecting member 1, so as to speed up the construction progress and ensure the quality of concrete pouring.

[0052] Specifically, as shown in Figure 3 , Figure 4 , and Figure 7As shown, the second connecting member 2 also includes a second partition 24 that is vertically spaced on the second side panel 23. The second partition 24 divides the second inner cavity into several second partition spaces vertically. The second partition 24 is provided with a second flow hole 241, which is used to connect two adjacent second partition spaces. In this embodiment, both the second connecting member 2 and the first connecting member 1 are cuboid structures. The second side panel 23 includes four side panels that are perpendicular to each other, and there is an upper pouring port 131 between two adjacent side panels. Several second partitions 24 are arranged vertically at intervals inside the second connecting member 2. Each side of the second partition 24 is connected to the four side panels to form a support structure inside the second connecting member 2, which further improves the structural strength and rigidity of the second connecting member 2, thereby ensuring the load-bearing capacity of the central column 100. Specifically, the second partition 24 is provided with a second flow hole 241 for concrete flow, 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, such as Figures 5 to 7 As shown, a first support rib 15 is provided between two adjacent first partitions 14, between the top plate 12 and the adjacent first partition 14, and between the first end plate 11 and the adjacent first partition 14; a second support rib 25 is 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 several first partition spaces by the first partition plate 14. The first partition spaces are provided with first support ribs 15, that is, vertical first support ribs 15 are provided 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. The first support ribs 15 are used to support the first partition plate 14 and the top plate 12, thereby further improving the load-bearing capacity of the structural strength of the first connecting member 1. Similarly, the second inner cavity is provided with second support ribs 25, which are used to support the second partition plate 24 and the second end plate 21, thereby further improving the load-bearing capacity of the structural strength of the second connecting member 2.

[0054] Specifically, such as Figure 3 and Figure 6As shown, both the first end plate 11 and the second end plate 21 have bolt through holes. Vertical reinforcing ribs 111 are provided around the bolt through holes on both the first end plate 11 and the second end plate 21. The ends of the reinforcing ribs 111 are fixedly connected to the adjacent first partition plate 14 or second partition plate 24. In this embodiment, the first partition plate 14 divides the vertical first side panel 13 into multiple first side panels 13 corresponding to several first partition spaces, i.e., each first partition space has a corresponding first side panel 13. Bolt through holes are provided on the edge of the first end plate 11. The four side plates of the first side panel 13 on the first end plate 11 are bent around the bolt through holes to form reinforcing ribs 111. The cross-section of the reinforcing ribs 111 can be triangular or L-shaped, without limitation. The reinforcing ribs 111 can enhance the structural strength at the bolt through holes and prevent stress concentration and damage after tightening the bolts. It is understandable that the structure and function of the reinforcing rib 111 on the second end plate 21 are the same as those of the reinforcing rib 111 on the first end plate 11.

[0055] Furthermore, such as Figure 6 As shown, a first mating hole is provided on the first end plate 11, and a second mating hole is provided on the second end plate 21. The second mating hole is directly opposite to the first mating hole, and both the first and second mating holes are used for the flow of concrete. In this embodiment, the first and second mating holes can cooperate with the upper pouring port 131 on the first side plate 13 and the second side plate 23, so that the concrete slurry can flow quickly from the first connecting member 1 to the interior of the second connecting member 2, which speeds up the process of filling the entire precast column joint connection structure with concrete, thereby accelerating 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 aforementioned precast column node connection structure. 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 bottommost central column 100. The third connecting member 3 is embedded in the bottommost central column 100 and is used to connect the reinforcement of the bottom beam slab. In this embodiment, the main body of the support column structure consists of the bottom cast-in-place pile reinforcement cage, the main reinforcement bars 200 of the cast-in-place pile, and several intermediate columns 100 above. Adjacent intermediate columns 100 are rigidly connected via precast column joints. The main reinforcement bars 200 of the cast-in-place pile are connected to the main reinforcement bars 110 of the bottom intermediate columns 100 via steel bar connectors. The third connecting component 3 is embedded in the bottom intermediate columns 100. Specifically, after the support column structure is placed into the pre-dug pile hole, construction workers need to pour... After the cast-in-place piles are cast and shaped, the station is constructed using the reverse construction method. During the reverse construction, the precast column joint connection structure is used to connect with the intermediate layer beams and slabs and is cast into an integral structure using concrete. The third connecting member 3 is used to connect with the reinforcement of the bottom layer beams and slabs. It should be noted that the intermediate layer beams and slabs and the central column 100 are precast components, while the bottom layer beams and slabs are cast-in-place structures. After the reinforcement of the bottom layer beams and slabs is tied to the third connecting member 3, the bottom layer beams and slabs can be cast, so that the bottom layer beams and slabs and the third connecting member form an integral structure.

[0057] Furthermore, the third connecting member 3 includes a third end plate 31 and a column end plate 32 arranged vertically at intervals. 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 connect with the bottom center column 100. The third end plate 31, the third side panel 33, and the column end plate 32 form a third inner cavity. A lower pouring port 331 is opened on the third side panel 33, and the lower pouring port 331 communicates with the third inner cavity. A lower anchor hole 332 is opened on the third side panel 33, and the lower anchor hole 332 communicates with the third inner cavity. 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 cuboid structure, and the third side panel 33 consists of four perpendicular side panels, with a pouring opening 331 between adjacent side panels. Several third partitions 34 are vertically spaced inside the third connecting member 3, each side of which connects to one of the four side panels to form a support structure within the third connecting member 3. This enhances the structural strength and rigidity of the third connecting member 3, thereby ensuring the load-bearing capacity of the support column structure. The third inner cavity is divided into several third partition spaces by the third partitions 34, and each third partition space is equipped with a vertical third support. Rib 35, the third support rib 35 is used to support column end plate 32 and third partition plate 34, thereby further improving the structural strength and load-bearing capacity of the third connecting member 3; connecting steel bars are welded on column end plate 32, and the other end of the connecting steel bars is anchored into the precast central column 100, thereby realizing the connection between the central column 100 and the third connecting member 3; specifically, the third partition plate 34 is provided with a third flow hole 341 for concrete flow, 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, thereby accelerating the construction progress and ensuring the quality of concrete pouring. Unlike the intermediate layer beams and slabs, the bottom layer beams and slabs are cast-in-place structures, requiring on-site formwork and casting. The third side panel 33 has lower anchor holes 332, which are used for the steel bars of the bottom layer beams and slabs to pass through, thereby achieving the initial connection between the steel bars of the bottom layer beams and slabs and the third connecting member 3. Afterwards, the construction workers set up the formwork and poured concrete. The concrete flows into the third inner cavity and fills the lower anchor holes 332 where the steel bars of the bottom layer beams and slabs are inserted, thus casting the bottom layer beams and slabs and the third connecting member 3 into an integrated structure.

[0058] Specifically, such as Figure 5 , Figure 7 as well as Figure 9As shown, the interior of the central column 100 has a grouting channel. 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 facing each other. The first grouting sleeve 4 is used to connect with the concrete pouring equipment, and the third grouting sleeve 6 is arranged directly opposite to the pile hole formed by the main reinforcement 200 of the cast-in-place pile. In this embodiment, before constructing the station using the reverse construction method, the construction workers first place the support column structure into the pre-dug pile hole. Then, on the ground, the workers use concrete pouring equipment to pour concrete into the grouting channel of the central column 100. The concrete flows through the grouting channel, the first grouting sleeve 4, the second grouting sleeve 5, and the third grouting sleeve 6 into the bottommost main reinforcement 200 of the cast-in-place pile, thereby realizing the pouring of the bored cast-in-place pile. Specifically, the first grouting sleeve 4... The first grouting sleeve 5 is vertically inserted into 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. The second grouting sleeve 5 is vertically inserted into 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. The third grouting sleeve 6 is vertically inserted into 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.

[0059] Specifically, such as Figure 5 , Figure 7 as well as Figure 9 As shown, the first grouting sleeve 4 is set in the first inner cavity, the second grouting sleeve 5 is set in the second inner cavity, and the third grouting sleeve 6 is set 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, which are used to flow 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. Thus, when concrete is poured 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 hole. For example, when using the precast column node connection structure to connect two adjacent central columns 100, the cast-in-place concrete will flow into the first inner cavity and the second inner cavity through the joint, and flow into the first grouting sleeve 4 and the second grouting sleeve 5 through the side flow hole 41 on the first grouting sleeve 4 and the second grouting sleeve 5 respectively, and finally fill the first grouting sleeve 4 and the second grouting sleeve 5, so that all parts inside and outside the precast column node connection structure are filled with concrete and the filling is dense, 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 central columns of 100mm as an example, the construction process of this support column structure is roughly described as follows:

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

[0062] Afterwards, the construction workers placed the aforementioned support column structure into the pre-dug pile hole. After the position was adjusted, the construction workers sequentially passed the concrete pouring equipment pipe through the grouting channel of the upper middle column 100, the first grouting sleeve 4, the second grouting sleeve 5, the grouting channel of the lower middle column 100, and the third grouting sleeve 6, and extended it into the bottommost cast-in-place pile reinforcement cage to pour concrete.

[0063] After the bored piles are poured, the construction workers take out the pipes of the concrete pouring equipment from underground and then begin the main construction of the station building using the reverse construction method. When the foundation pit is excavated to the precast column node connection structure (i.e. the connection node between the upper middle column 100 and the lower middle column 100), the intermediate layer beams and slabs are assembled on the outer layer of the precast column node connection structure, so that the steel bars of the intermediate layer beams and slabs are inserted into the upper anchor holes 132, and concrete is poured through the joint. 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 and compact it.

[0064] After the intermediate layer beam and slab construction is completed, the foundation pit is excavated to the third connecting member 3. The construction workers tie the bottom beam and slab reinforcement through the lower anchor hole 332 on the third connecting member 3, and then formwork is erected and the bottom beam and slab is poured. The poured concrete flows into the third inner cavity through the lower pouring port 331 and into the third grouting sleeve 6 through the side flow hole 41, and finally fills the entire third connecting member 3, thus 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 implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A precast column node connection structure, characterized in that, The precast column node connection structure, used to connect two vertically adjacent central columns (100), includes: The first connecting member (1) includes a first end plate (11) and a top plate (12) arranged vertically at intervals. 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 upper central column (100). The first end plate (11), the first side panel (13) and the top plate (12) form a first inner cavity. The second connecting member (2) includes a second end plate (21) and a bottom end plate (22) arranged vertically at intervals. 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 central column (100) of the lower layer. The second end plate (21) is abutted against the first end plate (11) and connected by bolts. The second end plate (21), the second side panel (23) and the bottom end plate (22) form a second inner cavity. There are joints between the first side panel (13), the second side panel (23) and the intermediate layer beam. The first side panel (13) and the second side panel (23) are both equipped with upper pouring ports (131). The joints are connected to the first inner cavity through the upper pouring ports (131) of the first side panel (13) and to the second inner cavity through the upper pouring ports (131) of the second side panel (23). Both the first side panel (13) and the second side panel (23) are provided with upper anchor holes (132). The upper anchor holes (132) on the first side panel (13) are connected to the first inner cavity, and 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 to pass through.

2. The precast column node connection structure according to claim 1, characterized in that, The first connecting member (1) further includes a first partition (14) arranged vertically at intervals on the first side panel (13). The first partition (14) divides the first inner cavity vertically into several first partition spaces. The first partition (14) is provided with a first flow hole (141) for connecting two adjacent first partition spaces.

3. The precast column node connection structure according to claim 2, characterized in that, The second connecting member (2) further includes a second partition (24) arranged vertically at intervals on the second side panel (23). The second partition (24) divides the second inner cavity vertically into several second partition spaces. The second partition (24) is provided with a second flow hole (241) for connecting two adjacent second partition spaces.

4. The precast column node connection structure according to claim 3, characterized in that, First support ribs (15) are provided between two adjacent first partitions (14), between the top plate (12) and the adjacent first partition (14), and between the first end plate (11) and the adjacent first partition (14). A second support rib (25) is 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).

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

6. The precast column node connection structure according to claim 1, characterized in that, The first end plate (11) has a first docking hole, and the second end plate (21) has a second docking hole. The second docking hole is directly opposite to the first docking hole. Both the first docking hole and the second docking hole are used for the flow of concrete.

7. A support column structure, characterized in that, The structure includes multiple vertically arranged central columns (100) and the precast column node connection structure as described in any one of claims 1-6, and further includes: The main reinforcement (200) of the cast-in-place pile is connected to the main reinforcement (110) of the central column (100) at the bottom layer. The third connecting member (3) is embedded in the bottommost central column (100) and is used to connect the reinforcing bars of the bottom beam slab.

8. The support column structure according to claim 7, characterized in that, The third connecting member (3) includes a third end plate (31) and a column end plate (32) arranged vertically at intervals. 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 connect with the bottommost central column (100). The third end plate (31), the third side panel (33), and the column end plate (32) form a third inner cavity. A pouring port (331) is provided on the third side panel (33), and the pouring port (331) communicates with the third inner cavity. The third side panel (33) is provided with a lower anchor hole (332), which is connected to the third inner cavity. The lower anchor hole (332) is used for the steel bars of the bottom beam to pass through.

9. The support column structure according to claim 8, characterized in that, The interior of the central column (100) has a grouting channel. 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 installed in 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 facing each other. The first grouting sleeve (4) is used to connect with the concrete pouring equipment. The third grouting sleeve (6) is arranged directly opposite to the pile hole formed by the main reinforcement (200) of the cast-in-place pile.

10. The support column structure according to claim 9, characterized in that, The first grouting sleeve (4) is set in the first inner cavity, the second grouting sleeve (5) is set in the second inner cavity, and the third grouting sleeve (6) is set 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), which are used for the flow of concrete.

Images