Beam-column connection node structure of equivalent steel reinforced concrete structure system and construction method of beam-column connection node structure

Abstract

The invention discloses an equivalent steel-reinforced concrete structure system beam-column connection node structure and a construction method thereof.The structure comprises a prefabricated column section which comprises a first framework and first concrete, and the first framework comprises a plurality of vertical steel plates and a plurality of column stirrups hooped outside the vertical steel plates; the inner sides of the upper portions of the vertical steel plates are connected with connecting pieces, the lower portions of the first frameworks and the lower portions of the connecting pieces are wrapped with the first concrete, the upper ends of the first frameworks are exposed out of the first concrete, and profile steel connectors connected to the connecting pieces are arranged on the outer sides of the prefabricated column sections. The precast beam comprises a second framework and second concrete, the second framework comprises a plurality of longitudinal steel plates and a plurality of beam stirrups hooped outside the longitudinal steel plates, the second concrete wraps the lower portion of the second framework, and end steel plates are embedded in the inner sides of the ends of the longitudinal steel plates. The end part of the longitudinal steel plate and one end of the end steel plate are exposed out of the second concrete and are connected to the profile steel joint; and the third concrete is poured at the upper ends of the precast beam and the first framework, and the third concrete covers the end parts of the profile steel joint and the longitudinal steel plate and one end of the end steel plate. The beam-column connecting joint solves the problems that a traditional beam-column connecting joint of an assembly type concrete structure is complex in connecting technology and large in construction difficulty.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a beam-column connection node structure of an equivalent steel-framed concrete structural system and a construction method thereof. Background Art

[0002] Prefabricated concrete structure technology is an efficient construction method that prefabricates concrete components in a factory and then transports them to the construction site for assembly. This technology has been widely used in the field of modern construction due to its advantages such as efficient production, rapid construction and precise quality control. However, the connection nodes between beams, columns and walls in prefabricated concrete structures currently mainly use traditional methods such as steel bar binding, welding or mechanical connection. These methods face problems such as complex connection process, great construction challenges and potential quality risks. Especially under extreme natural conditions such as earthquakes, the node connection area often becomes a weak point of the structure and is easily damaged.

[0003] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0004] In order to overcome the defects of the prior art, an equivalent steel-framed concrete structural system beam-column connection node structure and a construction method thereof are provided to solve the problems of complex connection process and great construction difficulty in the beam-column connection nodes of traditional prefabricated concrete structures.

[0005] To achieve the above object, an equivalent steel-reinforced concrete structural system beam-column connection node structure is provided, comprising:

[0006] A prefabricated column section, comprising a first frame and first concrete, wherein the first frame comprises a plurality of vertical steel plates and a plurality of column stirrups arranged outside the plurality of vertical steel plates, a connecting piece is connected to the inner side of the upper part of the plurality of vertical steel plates, the first concrete is coated on the first frame and the lower part of the connecting piece, the upper end of the first frame is exposed outside the first concrete, and a steel joint connected to the connecting piece is arranged on the outer side of the prefabricated column section;

[0007] A precast beam, comprising a second frame and second concrete, wherein the second frame comprises a plurality of longitudinal steel plates and a plurality of beam stirrups arranged outside the plurality of longitudinal steel plates, the second concrete is coated on the lower part of the second frame, end steel plates are buried inside the ends of the plurality of longitudinal steel plates, the ends of the longitudinal steel plates and one end of the end steel plates are exposed outside the second concrete and connected to the section steel joint;

[0008] The third concrete is poured on the upper ends of the precast beam and the first skeleton, and the third concrete covers the steel joint, the end of the longitudinal steel plate and one end of the end steel plate.

[0009] Furthermore, the steel joint is an I-shaped steel joint.

[0010] Furthermore, the connecting member is a two-layer partition, the lower partition is connected to the lower flange of the steel joint, and the upper partition is connected to the upper flange of the steel joint.

[0011] Furthermore, the upper longitudinal steel plate of the precast beam is connected to the upper flange, the lower longitudinal steel plate of the precast beam is connected to the lower flange, and the end steel plate is connected to the web of the steel joint.

[0012] Furthermore, the end steel plate is connected to the web via a connecting steel plate.

[0013] The present invention provides a construction method for a beam-column connection node structure of an equivalent steel-framed concrete structural system, comprising the following steps:

[0014] Install precast column sections;

[0015] Hoisting the prefabricated beam and connecting the end of the longitudinal steel plate and one end of the end steel plate of the prefabricated beam to the steel joint of the prefabricated column section;

[0016] A third concrete is poured at the upper end of the first skeleton of the precast beam and the precast column section, and the third concrete is coated on the steel joint, the end of the longitudinal steel plate and one end of the end steel plate to consolidate and form an equivalent steel-concrete structural system beam-column connection node structure.

[0017] The beneficial effect of the present invention is that the equivalent steel-framed concrete structural system beam-column connection node structure of the present invention proposes a construction method for the beam-column and wall connection nodes of the equivalent steel-framed concrete structural system. The core of this construction method is to introduce vertical (longitudinal) steel plates (such as steel plates or angle steels) as core force-bearing elements, and combine them with concrete to form a composite structure, thereby achieving optimization and innovation of the connection nodes between beams and columns and walls. The equivalent steel-framed concrete structural system beam-column connection node structure of the present invention has a relatively simple beam-column node connection process and low construction difficulty, providing a more reliable, efficient and environmentally friendly structural solution for modern buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0019] Figure 1It is a structural schematic diagram of the beam-column connection node structure of the equivalent steel-reinforced concrete structural system according to an embodiment of the present invention.

[0020] Figure 2 for Figure 1 Cross-sectional view at AA in .

[0021] Figure 3 for Figure 1 Cross-sectional view at BB in .

[0022] Figure 4 Schematic diagram of the structure of a connecting member according to an embodiment of the present invention. DETAILED DESCRIPTION

[0023] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] Reference Figures 1 to 4 As shown, the present invention provides an equivalent steel-concrete structural system beam-column connection node structure, including: a prefabricated column section 1, a prefabricated beam 2, and a third concrete 3.

[0026] There are multiple prefabricated column sections 1. The multiple prefabricated column sections are vertically arranged and coaxially connected.

[0027] Specifically, the prefabricated column section includes a first frame and a first concrete 12 .

[0028] The first frame includes a plurality of vertical steel plates 111 and a plurality of column stirrups 112. Figure 1 As shown, a plurality of vertical steel plates 111 are arranged in a matrix. A plurality of column stirrups 112 are arranged outside the plurality of vertical steel plates 111. A coupling 113 is connected to the inner side of the upper part of the plurality of vertical steel plates 111. The vertical steel plates are angle steels. The coupling is connected to the inner side of the plurality of vertical steel plates.

[0029] The first concrete 12 is coated on the lower part of the first frame and the connecting piece 113. The upper end of the first frame is exposed outside the first concrete 12. A steel joint 114 connected to the connecting piece 113 is provided on the outer side of the prefabricated column section 1.

[0030] Two upper and lower adjacent prefabricated column sections are connected together by bolt welding to form a structural column.

[0031] The precast beam 2 includes a second frame and a second concrete 22 .

[0032] Specifically, the second skeleton includes a plurality of longitudinal steel plates 211 and a plurality of beam stirrups 212. The plurality of beam stirrups 212 are disposed outside the plurality of longitudinal steel plates 211.

[0033] In this embodiment, the plurality of longitudinal steel plates are arranged in multiple layers, and specifically, include at least two layers of longitudinal steel plates.

[0034] The second concrete 22 is coated on the lower part of the second frame. An end steel plate 213 is buried inside the end of the plurality of longitudinal steel plates 211. The end steel plate is arranged between two layers of longitudinal steel plates.

[0035] The end of the longitudinal steel plate 211 and one end of the end steel plate 213 are exposed outside the second concrete 22 and connected to the steel joint 114 .

[0036] The third concrete 3 is poured on the upper end of the precast beam 2 and the first frame. The third concrete 3 is coated on the steel joint 114 and the end of the longitudinal steel plate 211 and one end of the end steel plate 213.

[0037] As a preferred implementation, the steel joint 114 is an I-shaped steel joint.

[0038] The coupling member 113 is a two-layer diaphragm. The lower diaphragm is connected to the lower flange of the profiled steel joint 114. The upper diaphragm is connected to the upper flange of the profiled steel joint 114.

[0039] See also Figure 4 As shown, the shape and size of the partition are adapted to the shape and size of the cross section of the first frame of the prefabricated column section. Grouting holes a are provided on the partition. The outer edge of the partition extends along the board surface to form an outer convex plate. The outer convex plate extends to the outside of the first frame through the gap between two adjacent vertical steel plates and is connected to the steel joint.

[0040] In this embodiment, the partition is connected to the steel joint through the outer convex plate and is integrally formed with the steel joint. Specifically, the outer convex plate of the lower partition is connected to the lower flange of the steel joint 114. The outer convex plate of the upper partition is connected to the upper flange of the steel joint 114.

[0041] In this embodiment, three side surfaces of the prefabricated column section are respectively connected with prefabricated beams, and correspondingly, outer edges of three side portions of the partition plate are respectively formed with outer convex plates and are respectively connected with profiled steel joints.

[0042] The upper longitudinal steel plate 211 of the precast beam 2 is connected to the upper flange. The lower longitudinal steel plate 211 of the precast beam 2 is connected to the lower flange, and the end steel plate 213 is connected to the web of the steel joint 114.

[0043] The end steel plate 213 is connected to the web through a connecting steel plate. Both sides of the connecting steel plate are respectively connected to the end steel plate and the web of the steel joint by bolts.

[0044] The present invention provides a construction method for a beam-column connection node structure of an equivalent steel-framed concrete structural system, comprising the following steps:

[0045] S1. Install prefabricated column section 1.

[0046] S2, hoisting the prefabricated beam 2 and connecting the end of the longitudinal steel plate 211 and one end of the end steel plate 213 of the prefabricated beam 2 to the steel joint 114 of the prefabricated column section 1.

[0047] S3, pour the third concrete 3 behind the upper end of the first skeleton of the precast beam 2 and the precast column section 1, and the third concrete 3 is coated on the steel joint 114, the end of the longitudinal steel plate 211 and one end of the end steel plate 213 to consolidate and form an equivalent steel-concrete structural system beam-column connection node structure.

[0048] The equivalent steel-framed concrete structural system beam-column connection node structure of the present invention is intended to improve the structural reliability and safety of the beam-column connection nodes of the prefabricated structure. Specifically, the equivalent steel-framed concrete structural system beam-column connection node structure of the present invention adopts longitudinal (or vertical) steel plates (whose strength and area are equivalent to the original longitudinal force-bearing steel bars) as substitute materials in the process of prefabricating concrete beams, columns and wall components. At the connection between the column and the beam, an extended I-shaped steel joint should be provided on the outside of the column. At the same time, a coupling piece needs to be arranged inside the column at the upper and lower flange elevations of the steel joint. The coupling piece and the steel joint should be made in an integrated manner to ensure that the thickness of the coupling piece and the thickness of the flange of the I-shaped steel joint meet or exceed the thickness of the longitudinal steel plate of the beam.

[0049] For the connection of the upper and lower columns, the connection method of the connecting piece is adopted, and the connecting piece and the vertical steel plate should be connected by a full penetration groove weld. In addition, grouting holes for concrete pouring are set on the connecting piece to facilitate the concrete pouring operation.

[0050] In the connection between the beam and column connector, the upper and lower steel plates of the beam and the column connector should be connected by full penetration butt welds, while the end steel plates of the beam are frictionally connected by high-strength bolts. These webs and bolts must meet the shear bearing capacity requirements under the most unfavorable working conditions during construction to ensure the stability of the connection.

[0051] At the construction site, the beams, columns and wall components are connected by connecting steel plates and installing bolts, and then the longitudinal steel plates of the beams and the steel joints of the connecting parts are welded to connect the precast concrete beams, columns and wall components into a structural system.

[0052] The equivalent steel-framed concrete structural system beam-column connection node structure of the present invention proposes a construction method for the connection nodes between beams and columns and walls of an equivalent steel-framed concrete structural system. The core of this construction method is to introduce vertical (longitudinal) steel plates (such as steel plates or angle steels) as core force-bearing elements and combine them with concrete to form a composite structure, thereby achieving optimization and innovation of the connection nodes between beams and columns and walls. This technology provides a more reliable, efficient and environmentally friendly structural solution for modern buildings.

[0053] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An equivalent steel-reinforced concrete structural system beam-column connection node structure, characterized in that: include: A prefabricated column section, comprising a first frame and first concrete, wherein the first frame comprises a plurality of vertical steel plates and a plurality of column stirrups arranged outside the plurality of vertical steel plates, a connecting piece is connected to the inner side of the upper part of the plurality of vertical steel plates, the first concrete is coated on the first frame and the lower part of the connecting piece, the upper end of the first frame is exposed outside the first concrete, and a steel joint connected to the connecting piece is arranged on the outer side of the prefabricated column section; A precast beam, comprising a second frame and second concrete, wherein the second frame comprises a plurality of longitudinal steel plates and a plurality of beam stirrups arranged outside the plurality of longitudinal steel plates, the second concrete is coated on the lower part of the second frame, end steel plates are buried inside the ends of the plurality of longitudinal steel plates, the ends of the longitudinal steel plates and one end of the end steel plates are exposed outside the second concrete and connected to the section steel joint; The third concrete is poured on the upper ends of the precast beam and the first skeleton, and the third concrete covers the steel joint, the end of the longitudinal steel plate and one end of the end steel plate.

2. The equivalent steel-reinforced concrete structural system beam-column connection node structure according to claim 1, characterized in that: The steel joint is an I-shaped steel joint.

3. The equivalent steel-reinforced concrete structural system beam-column connection node structure according to claim 2, characterized in that: The connecting piece is a two-layer partition, the lower partition is connected to the lower flange of the steel joint, and the upper partition is connected to the upper flange of the steel joint.

4. The equivalent steel-reinforced concrete structural system beam-column connection node structure according to claim 3, characterized in that: The upper longitudinal steel plate of the precast beam is connected to the upper flange, the lower longitudinal steel plate of the precast beam is connected to the lower flange, and the end steel plate is connected to the web of the steel joint.

5. The equivalent steel-reinforced concrete structural system beam-column connection node structure according to claim 4, characterized in that: The end steel plate is connected to the web plate via a connecting steel plate.

6. A construction method for the equivalent steel-reinforced concrete structural system beam-column connection node structure as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: Install precast column sections; Hoisting the prefabricated beam and connecting the end of the longitudinal steel plate and one end of the end steel plate of the prefabricated beam to the steel joint of the prefabricated column section; A third concrete is poured at the upper end of the first skeleton of the precast beam and the precast column section, and the third concrete is coated on the steel joint, the end of the longitudinal steel plate and one end of the end steel plate to consolidate and form an equivalent steel-concrete structural system beam-column connection node structure.

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