Prefabricated assembly type concrete column with overhanging beam and prestress connecting joint of prefabricated assembly type concrete column

Abstract

The utility model discloses a prefabricated concrete column with an overhanging beam, which comprises a concrete column body, the overhanging beam is arranged on the surface of the concrete column body, a first steel connecting piece is arranged at the end part of the overhanging beam, and second steel connecting pieces are arranged at two ends of the concrete column body. The second steel connecting piece is arranged at the inflection point position of the prefabricated concrete column and comprises a front end plate, a stress plate and a rear end plate which are connected at intervals, a plurality of connecting round holes are evenly formed in the surface of the stress plate in the peripheral direction, and U-shaped receding grooves are formed in the positions, corresponding to the connecting round holes, of the front end plate. The rear end plate and the concrete column body are connected in an integrated pouring mode. The utility model further discloses a joint connected through the prestressed tendons. The problems that in the prior art, the connection self-resetting capacity is poor, the post-earthquake maintenance cost is high, economical efficiency is poor, and the requirement for installation precision is high are solved, and meanwhile the use comfort level and the function recovery capacity of the assembly type concrete structure in and after the earthquake are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated buildings, and specifically to a prefabricated assembled concrete column with an outrigger beam and a prestressed connection node thereof. Background Art

[0002] For prefabricated buildings, precast concrete structures are widely used due to their relatively low cost and other advantages. However, the seismic resistance of precast concrete structures has long been a major issue hindering their widespread use in earthquake-prone areas. Therefore, improvements to traditional prefabricated concrete structures are still needed to develop structures with ideal seismic resistance, especially at the joints of precast components.

[0003] In order to achieve good seismic performance, traditional prefabricated concrete structure connections usually adopt a prefabricated monolithic construction method with cast-in-place in the node area.

[0004] Traditional prefabricated concrete pays more attention to the safety of node connections, but ignores the energy consumption and self-resetting ability of the structure. It often suffers severe damage after an earthquake and is difficult to repair, which cannot meet the green and efficient development concept of prefabricated concrete structures. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a prefabricated assembled concrete column with an outrigger beam and a prestressed connection node thereof, which solves the problems in the prior art such as poor self-resetting ability of the connection, high post-earthquake maintenance costs, poor economy, and high installation precision requirements, while improving the comfort level and functional recovery capability of the assembled concrete structure during and after the epicenter of the earthquake.

[0006] In order to solve the above technical problems, the utility model provides a prefabricated assembled concrete column with an outrigger beam, including a concrete column body, an outrigger beam is arranged on the surface of the concrete column body, a first steel connecting piece is arranged at the end of the outrigger beam, and second steel connecting pieces are arranged at both ends of the concrete column body. The second steel connecting piece is arranged at the inflection point of the prefabricated assembled concrete column, and the second steel connecting piece includes a front end plate, a load-bearing plate and a rear end plate connected at intervals, and a plurality of connecting circular holes are evenly opened on the surface of the load-bearing plate along the circumferential direction, and a U-shaped avoidance groove is arranged on the front end plate corresponding to the connecting circular hole, and the rear end plate is integrally cast and connected to the concrete column body.

[0007] Furthermore, a steel cage is provided in the concrete column, and the longitudinal bars of the steel cage are welded and fixed to the rear end plate.

[0008] Furthermore, a vertical plug plate of a rectangular frame structure is provided on the surface of the rear end plate on one side of the steel cage, the longitudinal reinforcement is welded to the surface of the vertical plug plate, and the vertical plug plate extends into the interior of the concrete column.

[0009] Furthermore, a cross-shaped reinforcing connector is provided between the front end plate and the load-bearing plate, and between the load-bearing plate and the rear end plate.

[0010] Furthermore, the end face size of the concrete column is consistent with the end face size of the corresponding second steel connector.

[0011] Furthermore, the first steel connecting member and the second steel connecting member have the same structure.

[0012] A prestressed connection node adopts any of the prefabricated assembled concrete columns described above, and two second steel connecting pieces between two adjacent prefabricated assembled concrete columns are locked and connected by prestressed tendons.

[0013] Furthermore, both ends of the prestressed tendon pass through the connecting circular holes of the second steel connecting piece respectively and are locked with the anchor.

[0014] Beneficial effects of the utility model:

[0015] First, the connection node position of the prefabricated assembled concrete column with an outrigger proposed by the present invention is set at the inflection point position of the frame column, which can avoid excessive damage at the node position when subjected to force. At the same time, the node connection position is located in the floor space rather than at the connection position between floors, which is convenient for construction;

[0016] Second, the prefabricated assembled concrete column proposed by the present invention is provided with an outrigger beam, and a first steel connecting member is provided at the end of the outrigger beam, through which the outrigger beam can be quickly installed with the prefabricated beam;

[0017] Thirdly, the prestressed assembled concrete column connection node proposed in the present invention realizes the connection between concrete columns through prestressing, and the local prestressed connection can realize the self-resetting function of the connection node, effectively reducing the residual deformation of the structure, and the short prestressed connection facilitates the control, monitoring and maintenance of the construction quality;

[0018] Fourth, the application of prestress not only improves the energy consumption and self-reset capability of the structure, but also improves the comfort and functional recovery capability of the structure during and after the earthquake. The use of prestressed connections improves the initial stiffness of the connection nodes of prefabricated concrete columns.

[0019] Fifth, the structure is simple to construct. By setting a circular hole to match the slotted hole, the installation error limit is controlled while reducing the construction accuracy requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the prefabricated assembled concrete column structure of the utility model;

[0021] Figure 2This is a schematic diagram of the structure of the second steel connector of the utility model;

[0022] Figure 3 It is a schematic diagram of the connection between the steel cage and the steel connecting piece of the utility model;

[0023] Figure 4 It is a schematic diagram of the assembly of the connection nodes of the utility model;

[0024] Figure 5 It is a schematic diagram of the node connection of the utility model. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0026] Reference Figures 1 to 3 As shown, an embodiment of a prefabricated assembled concrete column with an outrigger beam of the utility model comprises a concrete column body 1, an outrigger beam 2 is arranged on the surface of the concrete column body, a first steel connector 3 is arranged at the end of the outrigger beam, the first steel connector is used to connect with the prefabricated concrete beam, second steel connectors 4 are arranged at both ends of the concrete column body, the second steel connector is used to connect with adjacent prefabricated assembled concrete columns, that is, two adjacent second steel connectors are connected to each other, the second steel connector is arranged at the inflection point position of the prefabricated assembled concrete column to reduce excessive damage at the node position when subjected to force, and at the same time, the node connection position is located in the floor space rather than at the connection position between floors, which is convenient for construction, the second steel connector comprises a front end plate 5, a load-bearing plate 6 and a rear end plate 7 connected at intervals, the front end plate is used for abutment and limiting between two adjacent prefabricated assembled concrete columns, a plurality of connecting circular holes 8 are evenly opened on the surface of the load-bearing plate along the circumferential direction, which are locking plates, a U-shaped avoidance groove 9 is arranged on the front end plate corresponding to the connecting circular holes, and the rear end plate is integrally cast and connected with the concrete column body.

[0027] Specifically, during the construction of the prefabricated assembled concrete column with an outrigger beam, firstly, according to the design, the prefabricated concrete column steel cage is tied with wire, that is, the steel cage 10 arranged in the concrete column, the steel cage is composed of longitudinal bars 11, column stirrups, outrigger beam longitudinal bars and outrigger beam stirrups, the longitudinal bars are connected with the column stirrups and the outrigger beam longitudinal bars are connected with the outrigger beam stirrups by wire tying, the outrigger beam longitudinal bars pass through the column and are tied together with the contacted column stirrups, the second steel connectors at both ends of the two concrete columns, the first steel connector at the outrigger beam end and the steel cage are placed in the constructed formwork, the longitudinal bars of the steel cage are welded and fixed to the rear end plate, that is, the steel cage and the second steel connector form an integrated structure, the outrigger beam longitudinal bars of the steel cage are welded and fixed to the first steel connector, that is, the steel cage and the first steel connector form an integrated structure, then concrete is poured, and after the curing is completed, the prefabricated assembled concrete column with an outrigger beam can be obtained;

[0028] In the above structure, a vertical plug plate 12 with a rectangular frame structure can be provided on the surface of the rear end plate on one side of the steel cage, and the longitudinal reinforcement is welded to the surface of the vertical plug plate. The vertical plug plate can have a good positioning effect on the longitudinal reinforcement, and the welding position is more precise. The vertical plug plate extends into the interior of the concrete column, and the bonding with the concrete is more firmly enhanced, thereby improving the connection strength between the second steel connector and the concrete column structure.

[0029] A crisscross-shaped reinforcing connector 13 can also be provided between the front end plate and the load-bearing plate, and between the load-bearing plate and the rear end plate. The crisscross-shaped reinforcing connector plays a good dividing role, and forms eight connecting circular holes and eight U-shaped avoidance grooves. The connection strength and the supporting strength are high. During the node installation process, the force on the load-bearing plate is evenly dispersed, and the stability of the second steel connector is better.

[0030] The end face size of the above-mentioned concrete column is consistent with the end face size of the corresponding second steel connecting piece, so that the rear end plate can be used as a template during the concrete pouring process.

[0031] Reference Figure 4 and Figure 5 As shown, the present application also discloses a prestressed connection node, which adopts the above-mentioned prefabricated assembled concrete column, and the two second steel connecting parts between two adjacent prefabricated assembled concrete columns are locked and connected by prestressed tendons 14, and the two ends of the prestressed tendons respectively pass through the connecting circular holes of the second steel connecting parts and are locked with the anchor 15.

[0032] Specifically, first install and fix the bottom prefabricated assembled concrete column in place, and then hoist the upper prefabricated assembled concrete column into place on the bottom prefabricated assembled concrete column, that is, overlap the two second steel connectors and provide temporary support; install prestressed tendons between the two load-bearing plates of the two second steel connectors adjacent to each other in the height direction of the prefabricated concrete column, insert one end of the prestressed tendons into the connecting circular hole of the bottom load-bearing plate, and insert the other end into the connecting circular hole of the upper load-bearing plate, and then fix it with an anchor to complete the connection. The U-shaped avoidance groove on the front end plate is used to avoid the installation of the prestressed tendons, and prestress needs to be applied during the installation process.

[0033] In one embodiment, the first steel connector and the second steel connector have the same structure, which reduces the complexity of the design and facilitates construction.

[0034] The above embodiments are only preferred embodiments for fully illustrating the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or changes made by technicians in this technical field on the basis of the present utility model are all within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the claims.

Claims

1. A prefabricated concrete column with an outrigger beam, It is characterized in that It includes a concrete column, a cantilever beam is arranged on the surface of the concrete column, a first steel connecting piece is arranged at the end of the cantilever beam, second steel connecting pieces are arranged at both ends of the concrete column, the second steel connecting piece is arranged at the inflection point of the prefabricated assembled concrete column, the second steel connecting piece includes a front end plate, a load-bearing plate and a rear end plate connected at intervals, a plurality of connecting circular holes are evenly opened on the surface of the load-bearing plate along the circumferential direction, a U-shaped avoidance groove is arranged on the front end plate corresponding to the connecting circular hole, and the rear end plate is integrally cast and connected to the concrete column.

2. The prefabricated assembled concrete column with cantilever beams as claimed in claim 1, It is characterized in that A steel cage is arranged in the concrete column, and the longitudinal bars of the steel cage are welded and fixed to the rear end plate.

3. The prefabricated assembled concrete column with cantilever beams as claimed in claim 2, It is characterized in that A vertical plug plate with a rectangular frame structure is arranged on the surface of the rear end plate located on one side of the steel cage, the longitudinal reinforcement is welded to the surface of the vertical plug plate, and the vertical plug plate extends into the interior of the concrete column.

4. The prefabricated assembled concrete column with cantilever beams as claimed in claim 1, It is characterized in that A cross-shaped reinforcing connector is provided between the front end plate and the load-bearing plate, and between the load-bearing plate and the rear end plate.

5. The prefabricated assembled concrete column with cantilever beams as claimed in claim 1, It is characterized in that The end face size of the concrete column is consistent with the end face size of the corresponding second steel connecting piece.

6. The prefabricated assembled concrete column with cantilever beams as claimed in claim 1, It is characterized in that The first steel connecting member and the second steel connecting member have the same structure.

7. A prestressed connection node, It is characterized in that The prefabricated assembled concrete column according to any one of claims 1 to 6 is adopted, and the two second steel connecting members between two adjacent prefabricated assembled concrete columns are locked and connected by prestressed tendons.

8. The prestressed connection node according to claim 7, It is characterized in that The two ends of the prestressed tendon pass through the connecting circular holes of the second steel connecting piece respectively and are locked with the anchor.

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