Fabricated reinforced concrete steel structure combination column and connecting joint thereof

Abstract

The utility model relates to the technical field of reinforced concrete structures, in particular to an assembly type reinforced concrete steel structure combination column and a connecting joint thereof. A fabricated reinforced concrete steel structure combination column comprises a cup foundation and a prefabricated column arranged on the cup foundation, and an embedded connecting plate at one end of the prefabricated column is fixedly connected with the prefabricated column through a plurality of anchoring parts; the connecting joint comprises a plurality of the assembly type reinforced concrete steel structure combination columns and further comprises a main beam arranged on the top of the prefabricated column and a secondary beam arranged on one side of the main beam, and the main beam is fixedly connected with the prefabricated column through a connecting structure. The assembly type reinforced concrete steel structure combination column and the connecting joint thereof have the advantages of being good in anti-seismic performance, good in overall stability, good in firmness, good in engineering quality, long in service life, high in installation efficiency, short in construction period and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to reinforced concrete structure technical field especially relates to a kind of fabricated reinforced concrete steel structure composite column and its connecting joint. BACKGROUND

[0002] Industrial plant adopts steel beam steel column, and steel column is poor in fireproofing and corrosion resistance, surface needs to be treated with fireproofing and corrosion resistance (paint spraying / fireproofing coating spraying), due to the influence of ground humid environment, steel column close to ground part paint and fireproofing coating are easy to fall off, need to be maintained regularly, and there is security risk in column body corrosion due to maintenance not in place, and frequent structure maintenance can cause serious adverse effects on production and operation in the plant with humid working environment, high continuity requirement of production task or relatively precise equipment.

[0003] Chinese patent CN105484280B discloses an anti-corrosion industrial plant concrete cup mouth type prefabricated platform, which comprises a rectangular high-strength concrete body, an installation cup mouth for installing prefabricated concrete plant column or steel beam is reserved in the middle of the square concrete body, and the bottom of the cup mouth is a sealed reinforced concrete; the concrete body is designed with a high-strength steel reinforcement frame according to corresponding standard specifications; a reserved connecting groove is arranged on the vertical surface of the concrete body according to the need of steel reinforcement installation, and structural steel reinforcement is exposed in the groove to facilitate the connection of the steel reinforcement of ground beam; the concrete body is embedded with lifting bolts. The prefabricated product produced in the plant according to the assembly line mode can be repeatedly used, and has the advantages of good product quality, higher strength grade, fast production, energy saving and environmental protection, corrosion resistance, convenient construction, and can overcome the defects of cast-in-place construction, such as the need to set up complex wooden formwork, high cost, long construction period and many workers.

[0004] However, the installation position of the lifting bolt in the technical scheme can cause local stress concentration of the prefabricated column, especially at the connection between the bolt and the column body, and the insufficient bearing capacity of the bolt or the unreasonable installation position can cause excessive local stress of the column body, and even cause concrete cracking; and the installation and use of the lifting bolt can cause damage to the surface of the prefabricated column, especially when the tightening force of the bolt is too large, which can damage the concrete or coating on the surface of the column body, affecting its durability. UTILITY MODEL CONTENTS

[0005] One of the purposes of the utility model is to provide an XX device to solve the problems of the prior art, by installing a pre-embedded connecting plate on the top of the prefabricated column, and combining the pre-embedded connecting plate with a plurality of anchoring pieces between the pre-embedded connecting plate and the prefabricated column, so that the pre-embedded connecting plate can effectively transmit load and ensure reliable connection between the prefabricated column and the upper structure or the lower foundation. This connection method can improve the integrity and stability of the structure, and avoid structure loosening or damage due to loose connection.

[0006] In order to achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of prefabricated reinforced concrete steel structure composite column, comprising: cup mouth foundation and the prefabricated column being set on the cup mouth foundation, the prefabricated column is inserted into the recess in the cup mouth foundation upper end, one end of the prefabricated column is provided with embedded connecting plate, the embedded connecting plate is fixedly connected with the prefabricated column by several anchor pieces.

[0008] Preferably, the surface of the cup mouth foundation portion is brushed with a retarder after the prefabricated column is inserted.

[0009] Preferably, the cup mouth foundation and the prefabricated column are connected by high-strength non-shrinkage CGM grouting.

[0010] Preferably, the embedded connecting plate is provided with a shear plate at the lower part.

[0011] Another object of the utility model is to provide a connection joint for overcoming the deficiencies of the prior art, which connects the main beam and the prefabricated column together through a connecting mechanism, so that the construction site can be quickly assembled, the on-site wet work is reduced, the construction speed is fast, and the connecting structure used by the connection joint can adjust the position of the main beam according to the actual situation on site, so that the construction flexibility is high.

[0012] In order to achieve the above object, the utility model provides the following technical scheme:

[0013] A connection joint comprises a plurality of the prefabricated reinforced concrete steel structure composite columns, and further comprises a main beam arranged at the top of the prefabricated column and a secondary beam arranged at one side of the main beam, wherein the main beam and the prefabricated column are fixedly connected through a connecting structure.

[0014] Preferably, the connecting structure comprises a combination plate arranged above the embedded connecting plate, a fixed plate arranged above the combination plate, and a short connecting column arranged above the fixed plate and fixedly connected with the main beam, wherein the combination plate and the fixed plate have the same size.

[0015] Preferably, the combination plate is provided with a fixed screw rod, and the fixed screw rod penetrates through the fixed plate and extends upward.

[0016] Preferably, the top of the fixed screw rod is provided with a plurality of nuts for fixedly connecting the fixed plate and the combination plate.

[0017] Preferably, a pressing plate is arranged between the nut and the fixed plate.

[0018] Preferably, the main beam and the shear plate are arranged in parallel.

[0019] The utility model has the advantages that:

[0020] (1) The utility model discloses a shear plate is arranged at the lower part of the embedded connecting plate, and is specifically welded into shape to improve the shear resistance of the top of the prefabricated column, and the shear plate can be reliably connected with the embedded connecting plate to improve the connecting strength of the prefabricated column and other components, and the connecting mode can effectively transfer shear force and bending moment and can enhance the anti-seismic performance of the connecting part to ensure the integrity and stability of the structure.

[0021] (2) The utility model discloses that the surface of the cup mouth foundation part where the prefabricated column is inserted is brushed with a retarder, and the surface is made into a rough surface through high-pressure water flushing, and the rough surface can significantly improve the bonding strength between new and old concrete to ensure that the connection between the prefabricated column and the cup mouth foundation is more firm, the retarder can prolong the initial setting and final setting time of the concrete, the surface of the prefabricated column can keep plasticity for a long time, and the connection quality of the new and old concrete interface can be improved; the use of the retarder also reduces the mechanical treatment process such as chiseling, reduces energy consumption and noise pollution, avoids dust flying, and meets the requirements of green and environment-friendly construction.

[0022] (3) The utility model discloses that the column body of the short connecting column is welded with steel plates or H-shaped steel, and the short connecting column, the main beam and the secondary beam are connected through bolts or welding to form an integral structure stress system, the high-strength characteristics of steel can be fully utilized, the bearing capacity of the structure is significantly improved, the short connecting column can effectively transfer vertical load, the main beam and the secondary beam bear horizontal load and part of the vertical load, the stress path of the integral structure is clear, and the stress concentration problem is avoided.

[0023] (4) The utility model discloses that the main beam and the shear plate are arranged in parallel, the force transmission path of the structure is clearer, the main beam bears horizontal load and transfers the load to the prefabricated column body through the shear plate, the internal force redistribution of the structure can be effectively reduced through the arrangement, the stability of the integral structure is improved, and the anti-seismic performance is improved.

[0024] (5) The short connecting column, the main beam and the secondary beam are usually prefabricated in a factory, and are quickly installed on site through bolts or welding, and the construction mode greatly reduces the on-site wet operation and shortens the construction period.

[0025] In conclusion, the utility model has the advantages of good anti-seismic performance, good overall stability, good firmness, good engineering quality, long service life, high installation efficiency and short construction period. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the overall structure schematic view of the utility model embodiment one;

[0027] Figure 2 It is the overall installation schematic view of the utility model embodiment two;

[0028] Figure 3 Structure diagram of the connecting node of the second embodiment of the present application;

[0029] Figure 4 Structure diagram of the connecting node of the second embodiment of the present application; Figure 3 Structure diagram of the connecting node of the second embodiment of the present application;

[0030] Figure 5 Structure diagram of the connecting node of the second embodiment of the present application. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise” and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms “first” and “second” are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first” and “second” can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of “multiple” is two or more, unless otherwise specifically limited.

[0033] Embodiment one

[0034] As Figure 1As shown, the embodiment provides a prefabricated reinforced concrete steel structure composite column, which comprises a cup mouth foundation 1 and a prefabricated column 2 arranged on the cup mouth foundation 1. The prefabricated column 2 is inserted into the groove at the upper end of the cup mouth foundation 1. The top end of the prefabricated column 2 is provided with a pre-embedded connecting plate 21. The pre-embedded connecting plate 21 is fixedly connected with the prefabricated column 2 through a plurality of anchoring members 22. The anchoring members 22 are preferably anchoring steel bars. The pre-embedded connecting plate 21 can effectively transfer the load and ensure the reliable connection between the prefabricated column 2 and the upper structure or the lower foundation. This connection mode can improve the integrity and stability of the structure and avoid structural loosening or damage caused by loose connection.

[0035] Preferably, the cup mouth foundation 1 and the prefabricated column 2 are both cast-in-place reinforced concrete structures.

[0036] Meanwhile, the prefabricated column 2 is provided with longitudinal force steel bars and stirrups according to the stress condition. The longitudinal force steel bars can significantly improve the compression bearing capacity of the component, and the stirrups can constrain the core concrete to improve its compression strength and ultimate deformation capacity.

[0037] In the embodiment, the surface of the part of the cup mouth foundation 1 into which the prefabricated column 2 is inserted is brushed with a retarder and is roughened by high-pressure water flushing. The retarder can prolong the initial setting and final setting time of the concrete, so that the surface of the prefabricated column 2 remains plastic for a long time, which helps to improve the connection quality of the interface between the new and old concretes.

[0038] In the embodiment, the use of the retarder also reduces the mechanical treatment process such as chiseling, reduces energy consumption and noise pollution, avoids dust flying, and meets the requirements of green and environmentally friendly construction.

[0039] In the embodiment, the rough surface can significantly improve the bonding strength between the new and old concretes, and ensure that the connection between the prefabricated column 2 and the cup mouth foundation 1 is more firm.

[0040] Of course, the cup mouth foundation 1 and the prefabricated column 2 are connected by pouring high-strength non-shrinkage CGM grouting material, specifically, the high-strength non-shrinkage CGM grouting material with a strength two grades higher than the design strength of the prefabricated column 2 is used to pour the foundation into an integral whole.

[0041] In addition, the lower part of the pre-embedded connecting plate 21 is provided with a shear plate 23, which is specifically formed by welding, to improve the shear resistance of the top of the prefabricated column 2. Specifically, the shear plate 23 can form a reliable connection with the pre-embedded connecting plate 21 to improve the connection strength of the prefabricated column 2 and other components. This connection mode can effectively transfer shear force and bending moment and can enhance the seismic performance of the connection part to ensure the integrity and stability of the structure.

[0042] Embodiment two

[0043] As Figures 2-5 shown, wherein the same or corresponding parts as in example one are denoted by the same reference numerals, for the sake of brevity, only the difference from example one will be described below. The difference between this example two and example one is that:

[0044] This embodiment provides a connecting node, comprising several prefabricated reinforced concrete steel structure composite columns described in example one, further comprising: a main beam 3 arranged at the top of the prefabricated column 2 and a secondary beam 4 arranged at one side of the main beam 3, the main beam 3 and the prefabricated column 2 are fixedly connected through the connecting structure 5, the connecting structure 5 can be quickly assembled on site, reducing the wet operation on site, the construction speed is fast, and the connecting structure 5 used in the connecting node can adjust the position of the main beam 3 according to the actual situation on site, and the construction flexibility is high.

[0045] Among them, the connecting structure 5 includes: a combination plate 51 arranged above the embedded connecting plate 21, a fixed plate 52 arranged above the combination plate 51, and a short connecting column 53 arranged above the fixed plate 52 and fixedly connected with the main beam 3, the combination plate 51 and the fixed plate 52 are the same size.

[0046] At the same time, the combination plate 51 is provided with a fixed screw rod 54, and the fixed screw rod 54 extends upward through the fixed plate 52.

[0047] In this embodiment, the combination plate 51 cuts the fixed screw rod 54 hole according to the design requirement, the lower part of the hole is processed with a welding slope 57, the fixed screw rod 54 is inserted into the hole of the combination plate 51, and the bottom surface is planed after the plug welding is formed, the combination plate 51 is placed on the upper part of the embedded connecting plate 21 on the top of the prefabricated column 2 after the processing is completed, and the combination plate 51 is welded and connected with the embedded connecting plate 21 after the top elevation and the verticality of the column body of the prefabricated column 2 are corrected.

[0048] In this embodiment, the top of the fixed screw rod 54 is provided with a plurality of nuts 55 for fixedly connecting the fixed plate 52 and the combination plate 51, and a pressing plate 56 is arranged between the nut 55 and the fixed plate 52.

[0049] In this embodiment, the lower part of the short connecting column 53 is the fixed plate 52, the screw rod through hole is cut according to the position of the fixed screw rod 54 hole of the combination plate 51, and the short steel column and the prefabricated column 2 made of reinforced concrete are bolted through the pressing plate 56 and the thickened hexagonal nut 55.

[0050] In this embodiment, the column body of the short connecting column 53 is a steel plate welded or H-shaped steel, and the short connecting column 53 and the main beam 3, the main beam 3 and the secondary beam 4 are bolted or welded to form an integral structure stress system, which can fully exert the high strength characteristics of steel and significantly improve the bearing capacity of the structure.

[0051] In this embodiment, the short connecting column 53 can effectively transfer vertical loads, while the main beam 3 and secondary beam 4 bear horizontal loads and part of the vertical loads. The force path of the overall structure is clear, avoiding stress concentration problems.

[0052] Of course, the short connecting column 53, main beam 3 and secondary beam 4 are usually prefabricated in the factory and quickly installed on site by bolting or welding. This construction method greatly reduces on-site wet work and shortens the construction cycle.

[0053] In addition, the main beam 3 is arranged in parallel with the shear plate 23, which makes the force transmission path of the structure clearer. The main beam 3 bears the horizontal load and transmits it to the precast column 2 through the shear plate 23. This arrangement can effectively reduce the redistribution of internal forces in the structure, improve the stability of the overall structure, and thus improve the seismic performance.

[0054] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fabricated reinforced concrete steel structure composite column, characterized by, The utility model relates to a cup foundation and a prefabricated column, and the prefabricated column is inserted into a groove at the upper end of the cup foundation, and one end of the prefabricated column is provided with a pre-embedded connecting plate which is fixedly connected to the prefabricated column through a plurality of anchoring members. The surface of the cup foundation part is coated with a retarder.

2. The fabricated reinforced concrete-steel composite column according to claim 1, wherein The cup foundation and the prefabricated column are connected through high-strength non-shrinkage CGM grouting material.

3. The fabricated reinforced concrete-steel composite column according to claim 1, wherein The lower part of the pre-embedded connecting plate is provided with a shear plate.

4. The fabricated reinforced concrete-steel composite column of claim 1, wherein The utility model further relates to a combined column of a prefabricated column and a main beam and a secondary beam, and the main beam and the prefabricated column are fixedly connected through a connecting structure.

5. A connection node, characterized in that The connecting structure comprises a connecting plate arranged above the pre-embedded connecting plate, a fixed plate arranged above the connecting plate, and a short connecting column arranged above the fixed plate and fixedly connected to the main beam.

6. A connection node according to claim 5, characterized in that The connecting plate is provided with a fixed screw rod which extends upward through the fixed plate.

7. A connection node according to claim 6, characterized in that The top of the fixed screw rod is provided with a plurality of nuts for fixedly connecting the fixed plate and the connecting plate.

8. A connection node according to claim 7, characterized in that A pressing plate is arranged between the nuts and the fixed plate.

9. A connection node according to claim 8, characterized in that The main beam is arranged in parallel with the shear plate.

10. A connection node according to claim 5, characterized in that ​

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