Prefabricated single-column elevated station beam-column connection joint

Abstract

The application discloses a prefabricated single-column elevated station beam-column connecting joint, which comprises a prefabricated reinforced concrete cover beam at the upper part and a prefabricated steel pipe concrete stand column at the lower part. The prefabricated reinforced concrete cover beam comprises a box-shaped variable cross-section section steel with open ends and a hollow cavity. The lower end of the box-shaped variable cross-section section steel is welded with an upper butt joint section steel, which is a rectangular frame structure. An upper reinforcement cage is arranged outside the box-shaped variable cross-section section steel and the upper butt joint section steel. First concrete is poured to form the prefabricated reinforced concrete cover beam. The prefabricated steel pipe concrete stand column comprises a lower butt joint section steel. The periphery of the lower butt joint section steel is provided with a lower reinforcement cage. Second concrete is poured to form the prefabricated steel pipe concrete stand column. A connecting structure is arranged between the prefabricated reinforced concrete cover beam and the prefabricated steel pipe concrete stand column. Thus, the application realizes safe and reliable connection of the cover beam and the stand column, improves the on-site installation and construction efficiency, and can be widely applied to prefabricated buildings.

Description

Technical Field

[0001] This invention relates to the technical field of building structures, and more particularly to a prefabricated single-column elevated railway station beam-column connection node. Background Technology

[0002] Prefabricated elevated station structures are mainly composed of an upper frame structure and a lower cap beam and column structure, and are one of the most widely used structural forms in elevated stations of rail transit engineering.

[0003] Existing single-column elevated stations often face technical challenges such as large spans, extensive steel reinforcement, precast structures, difficulties in connecting precast components at joints, and less than ideal energy dissipation and seismic resistance. How to construct a new type of column-beam joint connection structure with good load-bearing performance, reasonable structural measures, and convenient construction is a technical challenge of beam-column joints in existing prefabricated 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 single-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 single-column elevated station beam-column connection node, which realizes a safe and reliable connection between the prefabricated reinforced concrete cap beam and the prefabricated steel pipe concrete column, improves on-site installation and construction efficiency, and can be widely used in prefabricated buildings.

[0006] To achieve the above objectives, this invention discloses a prefabricated single-column elevated station beam-column connection node, comprising an upper precast reinforced concrete cap beam and a lower precast steel-concrete composite column, characterized in that:

[0007] The precast reinforced concrete cap beam includes a box-shaped variable cross-section steel that is open at both ends and hollow. The lower end of the box-shaped variable cross-section steel is welded with an upper butt-joint steel, which is a rectangular frame structure.

[0008] An upper reinforcing cage is provided outside the box-shaped variable cross-section steel and the upper butt-joint steel. The lower end of the butt-joint steel extends out of the lower edge of the upper reinforcing cage to provide a connection position. An upper reinforcing connecting plate is welded to the lower end of the upper reinforcing cage. At the same time, a lining plate is welded inside the upper butt-joint steel. Finally, the first concrete is poured to form a precast reinforced concrete cap beam.

[0009] The precast steel-concrete composite column includes a lower butt steel section, a lower reinforcing cage is provided around the periphery of the lower butt steel section, the upper end of the lower butt steel section extends out of the lower reinforcing cage to provide a connection, and a lower reinforcing cage is welded to the upper end of the lower reinforcing cage. Then, a second concrete is poured to form the precast steel-concrete composite column.

[0010] A connection structure is provided between the precast reinforced concrete cap beam and the precast steel pipe concrete column. The connection structure includes multiple studs and a vertical steel plate that welds the two together as a whole. Post-cast concrete is formed outside the vertical steel plate to form a complete connection area.

[0011] Wherein: the upper reinforcing cage includes upper reinforcing bars, lower reinforcing bars, upper stirrups, web bars, column reinforcing bars and column stirrups. The upper reinforcing bars are arranged above the box-shaped variable cross-section steel, and the lower reinforcing bars are arranged below the box-shaped variable cross-section steel. The upper reinforcing bars and the lower reinforcing bars are connected by upper stirrups and web bars on both sides of the box-shaped variable cross-section steel.

[0012] Wherein: the column reinforcement bars and column stirrups are set on the outer periphery of the butt steel section, thereby forming an upper reinforcement cage through the upper stressed reinforcement bars, lower stressed reinforcement bars, upper stirrups, waist bars, column reinforcement bars and column stirrups.

[0013] Among them, the lower end of the column reinforcement is welded with an upper reinforcement connecting plate.

[0014] Wherein: the lower reinforcing cage includes longitudinal reinforcing bars and stirrups, and the longitudinal reinforcing bars are welded with lower reinforcing bar connecting plates at the ends of the reinforcing bars.

[0015] Specifically: after aligning the precast reinforced concrete cap beam with the precast steel pipe concrete column, multiple studs are welded at intervals around the connection ends of the upper and lower butt steel sections, and the upper and lower ends of the vertical steel plate are welded to the upper and lower reinforcing bar connecting plates to form a whole.

[0016] Wherein: the inner side of the box-shaped variable cross-section steel is welded with a steel plate corresponding to the upper butt-joint steel as a stiffening rib to effectively improve rigidity.

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

[0018] 1. The precast concrete cap beam and precast concrete column joint connection structure is adopted, which can effectively reduce the cross-sectional reinforcement, reduce weight, and improve the ultimate bearing capacity and seismic performance of this type of structure.

[0019] 2. The structure is simple and the construction is relatively convenient. It can provide a safe and reliable connection for prefabricated steel pipe concrete columns and prefabricated reinforced concrete cap beams.

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

[0021] Figure 1AThis diagram shows the internal structure of the precast steel-concrete cap beam of the prefabricated single-column elevated station beam-column connection node of the present invention.

[0022] Figure 1B Showing Figure 1A A schematic diagram of its breakdown.

[0023] Figure 2A The diagram shows a precast steel-concrete cap beam of the prefabricated single-column elevated station beam-column connection node of the present invention after concrete pouring.

[0024] Figure 2B Showing Figure 2A A schematic diagram of the lower part after decomposition.

[0025] Figure 3A A schematic diagram of the internal structure of the precast reinforced concrete column of the present invention is shown.

[0026] Figure 3B Showing Figure 3B A schematic diagram of its breakdown.

[0027] Figure 4 A schematic diagram of the connection structure between the precast steel-concrete cap beam and the precast reinforced concrete column of the present invention is shown.

[0028] Figure 5A A schematic diagram showing the connection between the precast steel-concrete cap beam and the precast reinforced concrete column of the present invention is shown.

[0029] Figure 5B Showing Figure 5A A schematic diagram of its breakdown.

[0030] Figure label:

[0031] 1. Precast reinforced concrete cap beam; 2. Precast steel pipe concrete column; 3. Studs; 4. Vertical steel plate; 5. Post-cast concrete; 6. Box-shaped variable cross-section steel; 7. Upper reinforcing bars; 8. Lower reinforcing bars; 9. Upper stirrups; 10. Web reinforcement; 105. First concrete; 106. Column reinforcement; 107. Steel plate; 108. Column stirrups; 109. Upper butt-joint steel; 110. Lining plate; 111. Upper reinforcing bar connecting plate; 112. Lower butt-joint steel; 201. Longitudinal reinforcing bars; 202. Lower stirrups; 203. Lower reinforcing bar connecting plate; 204. Second concrete; 205. Detailed Implementation

[0032] See Figures 1A to 5B This illustrates the prefabricated single-column elevated station beam-column connection node of the present invention.

[0033] The prefabricated single-column elevated station beam-column connection node includes an upper precast reinforced concrete cap beam 1 and a lower precast steel-concrete composite column 2, such as... Figure 1A , Figure 1B , Figure 2A and Figure 2B As shown, in one embodiment, the precast reinforced concrete cap beam 1 includes a box-shaped variable cross-section steel 101 that is open at both ends and hollow. The lower end of the box-shaped variable cross-section steel 101 is welded with an upper butt steel 110. The upper butt steel 110 is a rectangular frame structure, and the inner side of the box-shaped variable cross-section steel 101 is welded with a steel plate 108 corresponding to the upper butt steel 110 as a stiffening rib to effectively improve rigidity.

[0034] An upper reinforcing cage is provided outside the box-shaped variable cross-section steel 101 and the upper butt-joint steel 110. The lower end of the butt-joint steel 110 extends beyond the lower edge of the upper reinforcing cage to provide a connection position. An upper reinforcing connecting plate 112 is welded to the lower end of the upper reinforcing cage. At the same time, a lining plate 111 is welded inside the upper butt-joint steel 110. Finally, the first concrete 106 is poured to form the final shape. Figure 2B The precast reinforced concrete cap beam 1 is shown.

[0035] The upper reinforcing cage includes upper reinforcing bars 102, lower reinforcing bars 103, upper stirrups 104, web bars 105, column reinforcing bars 107, and column stirrups 109. The upper reinforcing bars 102 are positioned above the box-shaped variable cross-section steel 101, and the lower reinforcing bars 103 are positioned below the box-shaped variable cross-section steel 101. The upper reinforcing bars 102 and the lower reinforcing bars 103 are connected by two sides of the box-shaped variable cross-section steel 101. The upper stirrups 104 and the waist bars 105 are connected to expose the two ends of the box-shaped variable cross-section steel 101. The column steel bars 107 and the column stirrups 109 are set on the outer periphery of the butt steel 110. Thus, the upper steel cage is formed by the upper stressed steel bars 102, the lower stressed steel bars 103, the upper stirrups 104, the waist bars 105, the column steel bars 107, and the column stirrups 109. The lower end of the column steel bars 107 is welded with an upper steel bar connecting plate 112.

[0036] like Figure 3A and Figure 3B As shown, the precast steel-concrete composite column 2 includes a lower connecting steel section 201, with a lower reinforcing cage around the periphery of the lower connecting steel section 201. The upper end of the lower connecting steel section 201 extends out of the lower reinforcing cage to provide a connection. A lower reinforcing cage connecting plate 204 is welded to the upper end of the lower reinforcing cage. Then, a second concrete 205 is poured to form the precast steel-concrete composite column 2.

[0037] The lower reinforcing cage includes longitudinal reinforcing bars 202 and stirrups 203, and the longitudinal reinforcing bars 202 have a lower reinforcing bar connecting plate 204 welded at the bar ends.

[0038] like Figure 4 , Figure 5A and Figure 5BAs shown, in this embodiment, a connection structure is provided between the precast reinforced concrete cap beam 1 and the precast steel pipe concrete column 2. The connection structure includes multiple studs 3 and a vertical steel plate 4 that welds the two together as a whole, and post-cast concrete 5 is formed outside the vertical steel plate 4 to form a complete connection area.

[0039] In this process, after aligning the precast reinforced concrete cap beam 1 with the precast steel pipe concrete column 2, multiple studs 3 are welded at intervals around the connection ends of the upper butt steel section 110 and the lower butt steel section 201, and the upper and lower ends of the vertical steel plate 4 are welded to the upper steel bar connecting plate 112 and the lower steel bar connecting plate 204 to form a whole.

[0040] Therefore, the advantages of the present invention are:

[0041] 1. The precast concrete cap beam and precast concrete column joint connection structure is adopted, which can effectively reduce the cross-sectional reinforcement, reduce weight, and improve the ultimate bearing capacity and seismic performance of this type of structure.

[0042] 2. The structure is simple and the construction is relatively convenient. It can provide a safe and reliable connection for prefabricated steel pipe concrete columns and prefabricated reinforced concrete cap beams.

[0043] 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 single-column elevated railway station beam-column connection node, comprising an upper precast reinforced concrete cap beam and a lower precast steel-concrete composite column, characterized in that: The precast reinforced concrete cap beam includes a box-shaped variable cross-section steel that is open at both ends and hollow. The lower end of the box-shaped variable cross-section steel is welded with an upper butt-joint steel, which is a rectangular frame structure. An upper reinforcing cage is provided outside the box-shaped variable cross-section steel and the upper butt-joint steel. The lower end of the butt-joint steel extends out of the lower edge of the upper reinforcing cage to provide a connection position. An upper reinforcing connecting plate is welded to the lower end of the upper reinforcing cage. At the same time, a lining plate is welded inside the upper butt-joint steel. Finally, the first concrete is poured to form a precast reinforced concrete cap beam. The precast steel-concrete composite column includes a lower butt steel section, a lower reinforcing cage is provided around the periphery of the lower butt steel section, the upper end of the lower butt steel section extends out of the lower reinforcing cage to provide a connection, and a lower reinforcing cage is welded to the upper end of the lower reinforcing cage. Then, a second concrete is poured to form the precast steel-concrete composite column. A connection structure is provided between the precast reinforced concrete cap beam and the precast steel pipe concrete column. The connection structure includes multiple studs and a vertical steel plate that welds the two together as a whole. Post-cast concrete is formed outside the vertical steel plate to form a complete connection area.

2. The prefabricated single-column elevated station beam-column connection node as described in claim 1, characterized in that: The upper reinforcing cage includes upper reinforcing bars, lower reinforcing bars, upper stirrups, web bars, column reinforcing bars, and column stirrups. The upper reinforcing bars are located above the box-shaped variable cross-section steel, and the lower reinforcing bars are located below the box-shaped variable cross-section steel. The upper and lower reinforcing bars are connected by upper stirrups and web bars on both sides of the box-shaped variable cross-section steel.

3. The prefabricated single-column elevated station beam-column connection node as described in claim 2, characterized in that: The column reinforcement bars and column stirrups are set on the outer periphery of the upper butt steel section, thereby forming an upper reinforcement cage through the upper stressed reinforcement bars, lower stressed reinforcement bars, upper stirrups, waist bars, column reinforcement bars, and column stirrups.

4. The prefabricated single-column elevated station beam-column connection node as described in claim 3, characterized in that: The lower end of the column reinforcement is welded with an upper reinforcement connecting plate.

5. The prefabricated single-column elevated station beam-column connection node as described in claim 4, characterized in that: The lower reinforcing cage includes longitudinal reinforcing bars and stirrups, and the longitudinal reinforcing bars are welded with lower reinforcing bar connecting plates at the ends of the reinforcing bars.

6. The prefabricated single-column elevated station beam-column connection node as described in claim 5, characterized in that: After aligning the precast reinforced concrete cap beam with the precast steel pipe concrete column, multiple studs are welded at intervals around the connection ends of the upper and lower butt steel sections, and the upper and lower ends of the vertical steel plate are welded to the upper and lower reinforcing bar connecting plates to form a whole.

7. The prefabricated single-column elevated station beam-column connection node as described in claim 1, characterized in that: The inner side of the box-shaped variable cross-section steel is welded with a steel plate corresponding to the upper butt-joint steel to serve as stiffening ribs, thereby effectively improving rigidity.

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