Prefabricated beam-column connection node of double-column elevated station

Abstract

The application discloses an assembled double-column elevated station beam-column connecting joint, which comprises a cap beam, a frame beam and a frame column, the cap beam comprises a variable cross-section box-shaped steel, a pre-buried H-shaped steel and a pre-buried box-shaped steel, the pre-buried H-shaped steel extends out of prefabricated concrete on both sides to be connected with the frame beam, the outer edge of the variable cross-section box-shaped steel is provided with a cap beam steel reinforcement cage, the top and bottom of the variable cross-section box-shaped steel are provided with the pre-buried box-shaped steel, the lower end of the pre-buried box-shaped steel at the bottom extends out of pre-poured concrete to be connected with the frame column, the frame beam comprises a frame beam H-shaped steel, the frame beam H-shaped steel is arranged in a frame beam steel reinforcement cage, the frame column comprises a frame column box-shaped steel and a column steel reinforcement connecting plate, and the frame column box-shaped steel is placed in a frame column steel reinforcement cage; thus, the application can realize safe and reliable connection of the prefabricated reinforced concrete composite beam and the steel pipe column, improve the on-site installation construction efficiency, and has the advantages of low manufacturing difficulty, convenient construction, simple connecting form and clear stress.

Description

Technical Field

[0001] This invention relates to the technical field of precast concrete structures in civil engineering, and in particular to a prefabricated double-column elevated railway beam-column connection node. Background Technology

[0002] The prefabricated double-column elevated station structure is mainly composed of an upper frame structure and a lower column-beam structure, and is one of the most widely used structural forms in elevated stations of rail transit engineering. The prefabricated double-column elevated station structural system meets the requirements of industrialized construction and green building. This type of structural system has advantages such as convenient and rapid construction, stable and reliable quality, and minimal impact on traffic and the environment.

[0003] The core technology of precast concrete assembled double-column elevated station structures lies in the joint connection structure between the precast concrete cap beams, precast concrete columns, and longitudinal frame beams. Its quality directly affects the ultimate bearing capacity and seismic performance of this type of structure. How to construct a new type of column-cap beam joint connection structure with good load-bearing performance, reasonable structural measures, and convenient construction is a key technical challenge for assembled double-column elevated stations.

[0004] Therefore, in view of the above-mentioned defects, the designers of this invention, through dedicated research and design, and by integrating years of experience and achievements in related industries, have researched and designed a prefabricated double-column elevated station beam-column connection node to overcome the above-mentioned defects. Summary of the Invention

[0005] The purpose of this invention is to provide a prefabricated double-column elevated station beam-column connection node, which can realize a safe and reliable connection between precast reinforced concrete composite beams and steel pipe columns, improve on-site installation and construction efficiency, and has low manufacturing difficulty, convenient construction, simple connection form and clear stress.

[0006] To achieve the above objectives, this invention discloses a prefabricated double-column elevated station beam-column connection node, comprising a cap beam, a frame beam, and a frame column, characterized in that:

[0007] The cap beam includes variable cross-section box steel, embedded H-beams, and embedded box steel. Part of the embedded H-beams is welded inside the variable cross-section box steel, and part is embedded in precast concrete. Precast concrete extends from both sides of the embedded H-beams to connect with the frame beam. The outer edge of the variable cross-section box steel is provided with a cap beam reinforcement cage. Embedded box steel is provided at the top and bottom of the variable cross-section box steel. Embedded frame column connecting reinforcement is provided on the outer periphery of the embedded box steel. The outer end of the embedded frame column connecting reinforcement is welded with a cap beam reinforcement connecting plate. The lower end of the bottom embedded box steel extends into precast concrete to connect with the frame column. Finally, the entire cap beam is formed by precast concrete pouring.

[0008] The frame beam includes H-beams, which are placed in the frame beam reinforcement cage and finally cast with precast concrete to form the frame beam.

[0009] The frame column includes a frame column box steel and a column reinforcement connecting plate. The frame column box steel is placed in the frame column reinforcement cage. The upper end of the frame column reinforcement cage is provided with a column reinforcement connecting plate. Finally, the frame column is formed by pre-cast concrete.

[0010] Wherein: the cap beam reinforcement cage is woven from the upper reinforcing bars, the cap beam web bars, the cap beam lower reinforcing bars and the cap beam stirrups. The upper reinforcing bars are placed above the variable cross-section box steel, and the lower reinforcing bars are placed below the variable cross-section box steel. The upper and lower reinforcing bars are connected and fixed by the cap beam web bars and the cap beam stirrups.

[0011] Among them: stiffening ribs composed of several reinforcing steel plates are welded inside the variable cross-section box steel; the top and bottom of the pre-embedded H-beam are welded with reinforcing steel plates to be welded and fixed to the frame beam; and a lining plate is welded to the inner side of the pre-embedded box steel.

[0012] Wherein: the frame beam reinforcement cage is woven from the upper reinforcing bars of the frame beam, the frame beam web bars, the frame beam lower reinforcing bars and the frame beam stirrups. The upper reinforcing bars of the frame beam are set above the H-beams of the frame beam, and the lower reinforcing bars of the frame beam are set below the H-beams of the frame beam. The upper reinforcing bars and the lower reinforcing bars of the frame beam are fixed and connected by the frame beam web bars and the frame beam stirrups.

[0013] Wherein: the frame column reinforcement cage is formed by the longitudinal reinforcement of the frame column and the frame column stirrups. The longitudinal reinforcement of the frame column is arranged longitudinally at intervals around the outer periphery of the frame column box steel. Each longitudinal reinforcement of the frame column is fixed and positioned by the circumferential frame column stirrups.

[0014] Wherein: the ends of the longitudinal steel bars of the frame column are welded with column steel bar connecting plates.

[0015] Specifically, the pre-embedded H-beams in the cap beam are spliced ​​with the H-beams of the frame beam using bolts and connecting plates, and connecting concrete is poured at the connection points.

[0016] Specifically, the pre-embedded box-shaped steel and the box-shaped steel of the frame column are spliced ​​at the connection point with bolts and liners. The cap beam steel reinforcement connection plate is connected to the column steel reinforcement connection plate with a sealing plate. Then, the connecting concrete is poured at the splice point by drilling holes in the sealing plate around the perimeter and injecting grout.

[0017] As can be seen from the above, the prefabricated double-column elevated station beam-column connection node of the present invention has the following effects:

[0018] 1. Effectively achieves a safe and reliable connection between precast reinforced concrete composite beams and steel pipe columns, improving on-site installation efficiency. It also features low fabrication difficulty, convenient construction, simple connection methods, and clear stress distribution.

[0019] 2. Its structure adopts a precast concrete cap beam and precast concrete column joint connection form, which can effectively reduce the cross-sectional reinforcement, reduce weight, and improve the ultimate bearing capacity and seismic performance of this type of structure.

[0020] The details of this invention will become apparent from the following description and the accompanying drawings. Attached Figure Description

[0021] Figure 1 This diagram shows an overall schematic of the prefabricated double-column elevated station beam-column connection node of the present invention.

[0022] Figure 2A and Figure 2B A schematic diagram of the internal structure of the cap beam of the present invention is shown.

[0023] Figure 2C The diagram shows the connection between the upper and lower column steel sections inside the cap beam of the present invention.

[0024] Figure 3 A schematic diagram of the internal structure of the frame beam of the present invention is shown.

[0025] Figure 4A and Figure 4B A schematic diagram of the internal structure of the frame column of the present invention is shown.

[0026] Figure 5 A schematic diagram showing the connection of the cap beam and frame beam of the present invention is displayed.

[0027] Figure 6 A schematic diagram of the connection structure of the cap beam and frame column of the present invention is shown.

[0028] Figure 7A and Figure 7B The diagram shows the steel section connection area of ​​the cap beam and frame column of the present invention.

[0029] Figure 8A and Figure 8B A schematic diagram showing the connection between the cap beam and the frame column of the present invention is displayed.

[0030] Figure label:

[0031] 1. Cap beam; 2. Frame beam; 3. Frame column; 4. Precast concrete; 5. Bolt; 6. Variable cross-section box steel; 7. Embedded H-beam; 8. Embedded frame column connecting reinforcement; 9. Embedded box steel; 10. Upper reinforcing bars of cap beam; 10. Web reinforcement of cap beam; 10. Lower reinforcing bars of cap beam; 10. Stirrups of cap beam; 10. Lining plate; 10. Reinforcing steel plate; 11. Cap beam reinforcement connecting plate; 11. Frame beam H-beam; 20. Upper reinforcing bars of frame beam; 20. Web reinforcement of frame beam; 20. Lower reinforcing bars of frame beam; 20. Stirrups of frame beam; 20. Connecting plate; 20. Post-cast concrete; 20. Frame column box steel; 30. Longitudinal reinforcement of frame column; 30. Stirrups of frame column; 30. Column reinforcement connecting plate; 30. Sealing plate; 30. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings. The specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0033] See Figures 1 to 8B This illustrates the prefabricated double-column elevated station beam-column connection node of the present invention.

[0034] The prefabricated double-column elevated station beam-column connection node includes a cap beam 1, a frame beam 2, and a frame column 3, such as Figure 1 , Figure 2A , Figure 2B and Figure 2C As shown, the cap beam 1 includes a variable cross-section box girder 101, embedded H-beams 102, embedded frame column connecting reinforcement 103, embedded box girder 104, upper cap beam reinforcement 105, cap beam web reinforcement 106, lower cap beam reinforcement 107, cap beam stirrups 108, lining plate 109, reinforcing steel plate 110, and cap beam reinforcement connecting plate 111. A portion of the embedded H-beams 102 is welded inside the variable cross-section box girder 101, and a portion is embedded in precast concrete. The precast concrete extends from both sides of the embedded H-beams 102 to connect with the frame. The beam 2 is connected. The outer edge of the variable cross-section box steel 101 is provided with a cap beam reinforcement cage woven from the upper reinforcing bars 105, the cap beam web reinforcement 106, the cap beam lower reinforcing bars 107, and the cap beam stirrups 108. The upper reinforcing bars 105 are located above the variable cross-section box steel 101, and the lower reinforcing bars 107 are located below the variable cross-section box steel 101. The upper reinforcing bars 105 and the lower reinforcing bars 107 are connected and fixed by the cap beam web reinforcement 106 and the cap beam stirrups 108.

[0035] The web of the pre-embedded H-beam 102 has pre-reserved reinforcing bar holes so that the web reinforcement 106 of the cap beam reinforcement cage can pass through.

[0036] The variable cross-section box-shaped steel 101 is provided with embedded box-shaped steel 104 at both the top and bottom. The embedded box-shaped steel 104 is provided with embedded frame column connecting steel bars 103 on its outer perimeter. The outer end of the embedded frame column connecting steel bars 103 is welded with a cap beam steel bar connecting plate 111. The lower end of the bottom embedded box-shaped steel 104 extends out of the pre-cast concrete to connect with the frame column.

[0037] Among them, such as Figure 2C As shown, stiffening ribs composed of several reinforcing steel plates 110 are welded inside the variable cross-section box steel 101. The top and bottom of the pre-embedded H-beam 102 are both welded with reinforcing steel plates 110 to be welded and fixed to the frame beam (preferably to the longitudinal reinforcement of the frame beam). A liner plate 109 is welded to the inner side of the pre-embedded box steel 104. Finally, the entire cap beam 1 is formed by pre-cast concrete 4.

[0038] like Figure 3 As shown, the frame beam 2 includes a frame beam H-beam 201, upper reinforcing bars 202, web reinforcing bars 203, lower reinforcing bars 204, and stirrups. The frame beam H-beam 201 is placed in a frame beam reinforcement cage woven from the upper reinforcing bars 202, web reinforcing bars 203, lower reinforcing bars 204, and stirrups. The upper reinforcing bars 202 are positioned above the frame beam H-beam 201, and the lower reinforcing bars 204 are positioned below the frame beam H-beam 201. The upper reinforcing bars 202 and lower reinforcing bars 204 are fixed and connected by the web reinforcing bars 203 and stirrups. Finally, the frame beam 2 is formed by pouring precast concrete 4.

[0039] like Figure 4A and Figure 4B As shown, the frame column 3 includes a frame column box steel 301, frame column longitudinal steel bars 302, frame column stirrups 303, and column steel bar connecting plates 304. The frame column box steel 301 is placed in a frame column steel cage formed by the frame column longitudinal steel bars 302 and frame column stirrups 303. The frame column longitudinal steel bars 302 are arranged longitudinally around the outer periphery of the frame column box steel 301 at intervals. Each frame column longitudinal steel bar 302 is fixed and positioned by the circumferential frame column stirrups 303. The ends of the frame column longitudinal steel bars 302 are welded with column steel bar connecting plates 304. Finally, the frame column 3 is formed by pouring precast concrete 4.

[0040] like Figure 5In the arrangement of the cap beam and frame beam connection shown, after positioning and aligning the cap beam 1 and the frame beam 2, the pre-embedded H-beam 102 in the cap beam and the H-beam 201 in the frame beam are spliced ​​together with bolts 5 and connecting plates 206. The upper reinforcing steel bars 202 and the lower reinforcing steel bars 203 of the frame beam are respectively welded to the pre-arranged reinforcing steel plates 110 of the cap beam. Finally, connecting concrete 207 is poured at the connection point.

[0041] like Figure 6 The connection arrangement between the cap beam and the frame column is shown in the diagram. See also... Figure 7A and Figure 7B After aligning the cap beam 1 with the frame column 3, the embedded box-section steel 104 and the frame column box-section steel 301 are spliced ​​at the connection point using bolts 5 and lining plates 109. Then, the embedded frame column connecting steel bars 103 and the frame column longitudinal steel bars 302 are welded to the cap beam steel bar connecting plate 111. The cap beam steel bar connecting plate 111 is pre-connected to the embedded box-section steel 104 and the frame column box-section steel 301 at the factory using a steel plate perpendicular to the steel flange. See also... Figure 8A and Figure 8B On-site, sealing plates 305 are used to connect the cap beam reinforcement connecting plate 111 with the column reinforcement connecting plate 304. Finally, connecting concrete 207 is poured at the joint by drilling holes in the sealing plates 305 around the perimeter and injecting grout.

[0042] It is obvious that the above description and account are merely illustrative and not intended to limit the disclosure, application, or use of this invention. Although embodiments have been described and illustrated in the accompanying drawings, the invention is not limited to the specific examples exemplified by the drawings and described in the embodiments as currently considered the best mode for carrying out the teachings of the invention. The scope of the invention will include any embodiments falling within the foregoing description and the appended claims.

Claims

1. A prefabricated double-column elevated station beam-column connection node, comprising a cap beam, a frame beam, and a frame column, characterized in that: The cap beam includes variable cross-section box steel, embedded H-beams, and embedded box steel. Part of the embedded H-beams is welded inside the variable cross-section box steel, and part is embedded in precast concrete. Precast concrete extends from both sides of the embedded H-beams to connect with the frame beam. The outer edge of the variable cross-section box steel is provided with a cap beam reinforcement cage. Embedded box steel is provided at the top and bottom of the variable cross-section box steel. Embedded frame column connecting reinforcement is provided on the outer periphery of the embedded box steel. The outer end of the embedded frame column connecting reinforcement is welded with a cap beam reinforcement connecting plate. The lower end of the bottom embedded box steel extends into precast concrete to connect with the frame column. Finally, the entire cap beam is formed by precast concrete pouring. The frame beam includes H-beams, which are placed in the frame beam reinforcement cage and finally cast with precast concrete to form the frame beam. The frame column includes a frame column box steel and a column reinforcement connecting plate. The frame column box steel is placed in the frame column reinforcement cage. The upper end of the frame column reinforcement cage is provided with a column reinforcement connecting plate. Finally, the frame column is formed by pre-cast concrete.

2. The prefabricated double-column elevated station beam-column connection node as described in claim 1, characterized in that: The reinforcing cage of the cap beam is woven from the upper reinforcing bars, the web bars, the lower reinforcing bars, and the stirrups. The upper reinforcing bars are positioned above the variable cross-section box girder, and the lower reinforcing bars are positioned below the variable cross-section box girder. The upper and lower reinforcing bars are connected and fixed to each other by the web bars and stirrups.

3. The prefabricated double-column elevated station beam-column connection node as described in claim 1, characterized in that: The variable cross-section box-shaped steel is welded with stiffening ribs composed of several reinforcing steel plates. The top and bottom of the embedded H-beam are welded with reinforcing steel plates to be welded and fixed to the frame beam. A lining plate is welded to the inner side of the embedded box-shaped steel.

4. The prefabricated double-column elevated station beam-column connection node as described in claim 1, characterized in that: The frame beam reinforcement cage is woven from the upper reinforcing bars, web bars, lower reinforcing bars, and stirrups of the frame beam. The upper reinforcing bars are positioned above the H-beams of the frame beam, and the lower reinforcing bars are positioned below the H-beams of the frame beam. The upper and lower reinforcing bars are fixed and connected by the web bars and stirrups of the frame beam.

5. The prefabricated double-column elevated station beam-column connection node as described in claim 1, characterized in that: The frame column reinforcement cage is formed by the longitudinal reinforcement bars and stirrups of the frame column. The longitudinal reinforcement bars of the frame column are arranged longitudinally at intervals around the outer periphery of the frame column box steel, and each longitudinal reinforcement bar of the frame column is fixed and positioned by the circumferential frame column stirrups.

6. The prefabricated double-column elevated station beam-column connection node as described in claim 5, characterized in that: The ends of the longitudinal reinforcing bars of the frame columns are welded with column reinforcing bar connecting plates.

7. The prefabricated double-column elevated station beam-column connection node as described in claim 1, characterized in that: The pre-embedded H-beams in the cap beam are spliced ​​with the H-beams of the frame beam using bolts and connecting plates, and connecting concrete is poured at the connection points.

8. The prefabricated double-column elevated station beam-column connection node as described in claim 6, characterized in that: The pre-embedded box-section steel and the box-section steel of the frame column are spliced ​​at the connection with bolts and liners. The cap beam steel reinforcement connection plate is connected with the column steel reinforcement connection plate with a sealing plate. Then, the connecting concrete is poured at the splice by drilling holes in the sealing plate around the perimeter and injecting grout.

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