A reinforced concrete connection joint and its construction method

Abstract

The present invention provides a steel reinforced concrete connection joint, which comprises a steel column and a number of beam main reinforcements; a beam connection part is arranged on the steel column, a number of connecting steel plates are arranged at the bottom end of the beam connection part, through holes are arranged on the connecting steel plates, and the number of connecting steel plates are welded to the steel column to form a support platform, a number of node reinforcements pass through the through holes and form a steel reinforcement cage on the support platform; a number of the beam main reinforcements extend into the steel reinforcement cage, and the length for the beam main reinforcements to extend into the steel reinforcement cage is greater than or equal to the pre-anchorage length of the beam main reinforcements. And a construction method for the steel reinforced concrete connection joint. The present invention can make full use of the cross-sectional dimension of the original steel column, while ensuring the full anchorage of the beam main reinforcements, improving the construction efficiency at the connection joint.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction engineering, and particularly relates to a steel reinforced concrete connection node and a construction method thereof. Background Art

[0002] In traditional steel reinforced concrete node connection operations, when there are many layers of beam main reinforcements, the beam main reinforcements cannot be anchored into the column; for example, when there are three or more rows of beam main reinforcements, due to the limited space outside the steel column, the beam main reinforcements cannot be fully anchored into the steel reinforced concrete node, directly affecting the connection construction quality at the node.

[0003] To solve the above problem of insufficient anchorage length, the traditional methods are as follows:

[0004] First, drill holes in the flange of the steel column for the beam main reinforcements to pass through to increase the anchorage length; however, in this method,

[0005] 1. There are errors in drilling, making it difficult for the beam main reinforcements to pass through;

[0006] 2. Even if the beam main reinforcements can pass through, when passing through in two directions, it is difficult to fully avoid; too many drill holes even directly affect the strength of the steel column.

[0007] Second, weld the beam main reinforcements to the steel column; however, in this method,

[0008] 1. When the number of rows of beam main reinforcements is small, it can be solved; but when there are multiple rows of beam main reinforcements, there is still a problem of insufficient anchorage length for some, and the welding amount is large.

[0009] 2. If welded first, it is difficult to pass the stirrups; if welded later, due to errors, a backing plate needs to be added during the welding of the beam main reinforcements.

[0010] Third, weld threaded sleeves on the flange of the steel column; however, in this method,

[0011] 1. The welding quality of the threaded sleeves is not easy to guarantee; when the quantity is large, there are also problems of large welding amount and high cost;

[0012] 2. Threaded connection must be implemented before the beam stirrups are passed through; the stirrup operation needs to be installed in sequence, with low efficiency. Summary of the Invention

[0013] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a steel reinforced concrete connection node and a construction method thereof, which can make full use of the cross-sectional dimensions of the original steel column, while ensuring the full anchorage of the beam main reinforcements, improving the construction efficiency at the connection node.

[0014] The technical solution adopted by the present invention to solve its technical problems is:

[0015] A rigid steel-concrete connection joint, comprising a steel column and several beam main steels;

[0016] A beam connection part is arranged on the steel column, several connecting steel plates are arranged at the bottom end of the beam connection part, through holes are arranged on the connecting steel plates, and the several connecting steel plates are welded to the steel column to form a supporting platform, and several node steel bars pass through the through holes and form a steel reinforcement cage on the supporting platform;

[0017] Several of the beam main steels extend into the steel reinforcement cage, and the length for the beam main steels to extend into the steel reinforcement cage is greater than or equal to the pre-anchorage length of the beam main steels.

[0018] Preferably, a top steel plate is arranged at the top end of the beam connection part, and several of the through holes are also arranged on the top steel plate;

[0019] Several of the node steel bars are wound between the top steel plate and the supporting platform to form the steel reinforcement cage.

[0020] Preferably, the steel reinforcement cage comprises an outer cage body formed by tying in a rectangular shape and several inner cage bodies, and several stirrups are welded and arranged on the outer side of the outer cage body.

[0021] Preferably, several column side steel bars are arranged around the steel column on the steel column itself, and the several column side steel bars pass through the supporting platform and connect the inner cage bodies.

[0022] Preferably, the cross section of the steel column is in a "cross" shape, side plates perpendicular to the ends are arranged at the ends of the "cross" shape, and the width of the side plates is less than the width of the steel column;

[0023] The supporting platform is arranged in a rectangular shape, and the connecting steel plates include a first steel plate welded at the inner angle of the "cross" shape, a second steel plate welded on the outer side of the side plate, and a third steel plate welded and arranged at the corner end of the supporting platform.

[0024] Preferably, at least two of the first steel plate, the second steel plate, and the third steel plate are integrally formed.

[0025] Preferably, the supporting platform is arranged in a circular shape or an n-sided shape, where n = 3 or n is any positive integer greater than 4.

[0026] A construction method for a rigid steel-concrete connection joint, applicable to the rigid steel-concrete connection joint described above, comprising the following steps:

[0027] S1. Hoist the steel column and ensure that the hoisting of the steel column meets the strength requirements;

[0028] S2. Weld and install the connecting steel plate on the profiled steel column to form the supporting platform;

[0029] S3. Bind the steel reinforcement cage on the supporting platform and complete the binding and fixing of the beam top reinforcement;

[0030] S4. Seal the formwork with templates and carry out concrete pouring.

[0031] Further, before step S2, according to the actual parameters of the profiled steel column and the connection node, open through holes on the connecting steel plate; so that the steel reinforcement cage can pass through the through holes to form on the supporting platform.

[0032] Further, in step S3, a top steel plate is also hoisted and installed corresponding to the steel reinforcement cage, and the outer contour of the top steel plate corresponds to the outer contour of the supporting platform.

[0033] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0034] In this solution, a supporting platform is ingeniously arranged on the basis of the profiled steel column. By arranging a steel reinforcement cage on the supporting platform, and then connecting the beam top reinforcement to the steel reinforcement cage and then pouring and forming, it effectively avoids the situation of drilling the profiled steel column in the traditional technology and ensures the strength of the profiled steel column; in addition, the connection and binding operations with the beam top reinforcement can be carried out while binding the steel reinforcement cage, avoiding the need for additional welding in the traditional technology, realizing the synchronous construction among the steel reinforcement cage, the beam top reinforcement and the stirrups, greatly improving the operation efficiency at the connection node, and real-time binding is more convenient for quality control; at the same time, by adopting the connection method of the steel reinforcement cage and the beam top reinforcement, it can better adapt to the anchorage length of the beam top reinforcement and ensure the anchorage quality; and the profiled steel column and the beam top reinforcement are integrally poured through the steel reinforcement cage, further improving the integrity at the connection node. The structure in this solution is simple, improves the construction efficiency while ensuring the quality, and has great market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0036] Figure 1 It is a schematic structural diagram of the connection node of the present invention.

[0037] Figure 2 It is Figure 1 The sectional structural schematic diagram of the A position (removing the beam) in

[0038] Figure 3 For Figure 1 The sectional structure schematic diagram at position B (beam removed) in

[0039] Figure 4 The top view structure schematic diagram of the steel reinforcement cage of the present invention.

[0040] Figure 5 The structure schematic diagram of the steel reinforcement cage of the present invention.

[0041] Figure 6 For Figure 1 The sectional structure schematic diagram at position C (beam removed) in

[0042] Figure 7 The structure schematic diagram of the connecting steel plate of the present invention.

[0043] Figure 8 For Figure 1 The sectional structure schematic diagram at position D in

[0044] Figure 9 The connection structure schematic diagram between the steel reinforcement cage and the beam surface reinforcement in the present invention.

[0045] Wherein:

[0046] 1 - steel column, 11 - beam connection part, 111 - connecting steel plate, 1111 - through hole, 1112 - first steel plate, 1113 - second steel plate, 1114 - third steel plate, 112 - top steel plate, 12 - supporting platform, 13 - steel reinforcement cage, 131 - outer cage body, 132 - inner cage body, 133 - stirrup, 14 - column side reinforcement, 15 - side plate;

[0047] 2 - beam surface reinforcement. Detailed implementation manners

[0048] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific implementation manners. It should be noted that, without conflict, the implementation manners of the present application and the features in the implementation manners can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present invention. The described implementation manners are only a part of the implementation manners of the present invention, rather than all of the implementation manners. All other implementation manners obtained by those of ordinary skill in the art based on the implementation manners in the present invention without making creative efforts belong to the scope of protection of the present invention.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention herein are only for the purpose of describing specific implementation manners and are not intended to limit the present invention.

[0050] Example 1

[0051] As shown in Figure 1-9 Figure, in this embodiment, a steel reinforced concrete connection joint is provided, including a steel section column 1 and several beam top reinforcements 2.

[0052] Furthermore, a beam connection part 11 is arranged on the steel section column 1. At the bottom end of the beam connection part 11, several connecting steel plates 111 are arranged. Through holes 1111 are arranged on the connecting steel plates 111. The several connecting steel plates 111 are welded to the steel section column 1 to form a supporting platform 12. Several joint steel bars pass through the through holes 1111 and form a steel bar cage 13 on the supporting platform 12.

[0053] As a preferred solution, a top steel plate 112 is arranged at the top end of the beam connection part 11. Several of the through holes 1111 are also arranged on the top steel plate 112; so that on the steel section column 1, a space for arranging the steel bar cage 13 is formed between the top steel plate 112 and the supporting platform 12. The several joint steel bars are wound between the top steel plate 112 and the supporting platform 12 to form the steel bar cage 13.

[0054] In this embodiment, the steel bar cage 13 includes an outer cage body 131 and an inner cage body 132 which are bound into a rectangular body. Among them, the inner cage body 132 can be arranged in one layer or multiple layers. The inner cage body 132 is wrapped inside the outer cage body 131; several stirrups 133 are welded on the outer sides of the inner cage body 132 and the outer cage body 131.

[0055] In addition, several column side steel bars 14 are arranged around the steel section column 1 itself on the steel section column 1. The several column side steel bars 14 pass through the supporting platform 12 and are connected to the inner cage body 132.

[0056] The several beam top reinforcements 2 extend into the steel bar cage 13, and the length for the beam top reinforcements 2 to extend into the steel bar cage 13 is greater than or equal to the pre-anchorage length of the beam top reinforcements 2; in this embodiment, the steel bar cage 13 and the beam top reinforcements 2 can be synchronously tied, so that the steel bar cage 13 can timely adjust for the anchorage length of the beam top reinforcements 2 to ensure the anchorage quality of the beam top reinforcements 2.

[0057] As a preferred solution, in this embodiment, the cross section of the steel section column 1 is in a "cross" shape. Side plates 15 perpendicular to each end are arranged at the four ends of the "cross" shape. The side plates 15 are arranged along the length direction of the steel section column 1 and are the same as the length of the steel section column 1; the width of the side plates 15 is smaller than the width of the steel section column 1.

[0058] Furthermore, the support platform 12 is rectangularly arranged. The connecting steel plate 111 includes a first steel plate 1112 welded to the four inner corners of the "cross" shape, a second steel plate 1113 in a rectangular shape welded to the outer side of the side plate 15, and a third steel plate 1114 welded at the four corner ends of the support platform 12.

[0059] As a preferred solution, at least two of the first steel plate 1112, the second steel plate 1113, and the third steel plate 1114 are integrally formed; for example, the first steel plate 1112 and the third steel plate 1114 are designed to be integral, and at this time, the hoisting and welding time of the connecting steel plate 111 can be effectively shortened; obviously, the first steel plate 1112, the second steel plate 1113, and the third steel plate 1114 can also be designed to be an integral structure, or the entire support platform 12 can be designed to be an integral structure, so as to facilitate the hoisting and installation of the whole plate and improve the integrity of the support platform 12.

[0060] In addition, the support platform 12 can also be set to be circular or n-sided, where n = 3 or n is any positive integer greater than 4.

[0061] In addition, for the convenience of further understanding of this solution, this embodiment also provides a construction method for the stiffened concrete connection joint, which is applicable to the stiffened concrete connection joint described above, and includes the following steps:

[0062] S1. Hoist the steel section column 1 at the corresponding construction position and ensure that the pile foundation installation of the steel section column 1 meets the strength requirements;

[0063] S2. Weld and install the connecting steel plate 111 on the steel section column 1 to form the support platform 12;

[0064] S3. Bind the steel reinforcement cage 13 on the support platform 12 and complete the binding and fixing of the beam top reinforcement 2;

[0065] S4. Seal the formwork with a template and carry out concrete pouring.

[0066] Furthermore, before step S2, according to the actual parameters of the steel section column 1 and the connection node, the through hole 1111 is opened on the connecting steel plate 111, so that the steel reinforcement cage 13 can pass through the through hole 1111 to form on the support platform 12. At the same time, it is also convenient for the penetration of the column side reinforcement 14 and its connection with the inner cage body 132.

[0067] Even further, in step S3, a top steel plate 112 is also hoisted and arranged corresponding to the steel reinforcement cage 13, and the outer contour of the top steel plate 112 corresponds to the outer contour of the support platform 12.

[0068] As described above, it is only the preferred embodiment of the present invention, and there is no limitation in any form to the present invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A rigid steel-concrete connection joint, characterized in that, It includes a profiled steel column and several beam main steels; A beam connection part is arranged on the profiled steel column. Several connecting steel plates are arranged at the bottom end of the beam connection part. Through holes are arranged on the connecting steel plates. The several connecting steel plates are welded to the profiled steel column to form a supporting platform. Several node steel bars pass through the through holes and form a steel reinforcement cage on the supporting platform; Several of the beam main steels extend into the steel reinforcement cage, and the length for the beam main steels to extend into the steel reinforcement cage is greater than or equal to the pre-anchorage length of the beam main steels; A top steel plate is arranged at the top end of the beam connection part, and several of the through holes are also arranged on the top steel plate; The outer contour of the top steel plate corresponds to the outer contour of the supporting platform; the supporting platform is arranged in a rectangle; Several of the node steel bars are wound between the top steel plate and the supporting platform to form the steel reinforcement cage; The steel reinforcement cage includes an outer cage body tied into a rectangular body and several inner cage bodies. Several stirrups are welded on the outside of the outer cage body; Several column side steel bars are arranged around the profiled steel column on the profiled steel column. The several column side steel bars pass through the supporting platform and are connected to the inner cage bodies; The cross section of the profiled steel column is in a "cross" shape. Side plates perpendicular to the ends are arranged at the ends of the "cross" shape. The width of the side plates is smaller than the width of the profiled steel column; the side plates are arranged along the length direction of the profiled steel column and are consistent with the length of the profiled steel column; The connecting steel plates include a first steel plate welded at the inner angle of the "cross" shape, a second steel plate welded on the outer side of the side plate, and a third steel plate welded at the corner end of the supporting platform; The second steel plate and the third steel plate are formed in an integral structure.

2. A construction method for a rigid steel-concrete connection joint, characterized in that, For the steel reinforced concrete connection node described in claim 1 above, it includes the following steps: S1. Hoist the profiled steel column and ensure that the hoisting of the profiled steel column meets the strength requirements; Before step S2, according to the actual parameters of the profiled steel column and the connection node, open through holes on the connecting steel plates; so that the steel reinforcement cage can pass through the through holes and thus be formed on the supporting platform; S2. Weld and install the connecting steel plates on the profiled steel column to form the supporting platform; S3. Bind the steel reinforcement cage on the supporting platform and complete the binding and fixing of the beam main steels; In step S3, a top steel plate is also hoisted corresponding to the steel reinforcement cage; S4. Seal the formwork with a template and carry out concrete pouring.

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