A variable-height connection structure of a square steel pipe concrete column and a concrete beam

Abstract

The utility model discloses a square steel pipe concrete column and concrete beam's variable height difference connecting structure, including square steel pipe concrete column and concrete frame beam, the concrete frame beam of two side edges is arranged with one section height staggered, and square steel pipe concrete column includes square steel pipe and column concrete, and concrete frame beam includes H type steel, upper beam longitudinal reinforcement, lower beam longitudinal reinforcement and pours beam concrete, and the end of H type steel is welded with the outer wall of square steel pipe, and upper beam longitudinal reinforcement and lower beam longitudinal reinforcement are welded with H type steel. Through setting variable height difference connection, can make stress distribution more uniform, reduce stress concentration phenomenon, improve the connecting strength and stability, can adjust the height difference of connecting portion according to the demand, and the building of different height requirement is adapted, can according to actual load distribution situation, the beam height is adjusted flexibly, makes the structure more reasonable and economic, can avoid using too many materials in the part of not needing high bearing capacity, thereby saves steel and concrete, reduces cost.

Description

Technical Field

[0001] This utility model belongs to the field of construction technology combining concrete structure and steel structure, and particularly relates to a variable height difference connection structure between a square steel tube concrete column and a concrete beam. Background Technology

[0002] The demand for the construction of high-rise buildings and large public facilities is increasing, and these buildings often involve complex structural forms and high construction technology requirements.

[0003] Traditional connection methods, such as simple on-site casting and rebar tying, have the following problems:

[0004] Insufficient connection strength makes connection nodes prone to becoming weak points in high-rise and long-span structures, making it difficult to meet high strength requirements.

[0005] The existing connection method has poor seismic performance, and the nodes are prone to damage under earthquake loads, affecting the overall stability of the structure. This problem is particularly prominent in high-intensity earthquake zones.

[0006] The construction is complex and time-consuming. Traditional connection methods involve cumbersome procedures, are inefficient, and require highly skilled construction personnel, which increases the difficulty and cost of construction. Utility Model Content

[0007] The purpose of this utility model is to provide a variable height connection structure for square steel tube concrete columns and concrete beams. Through innovative structural design, it solves the problems of insufficient connection strength, poor seismic performance, and complex construction in traditional cast-in-place concrete methods, improves the safety and durability of the connection nodes, and meets the high standards of modern building engineering.

[0008] This utility model is implemented as follows: a variable height connection structure between a square steel tube concrete column and a concrete beam includes a square steel tube concrete column and concrete frame beams located on opposite sides of the column, with the two concrete frame beams staggered vertically by a certain height. The square steel tube concrete column comprises a square steel tube and column concrete poured inside it. The concrete frame beam comprises H-beams, upper longitudinal reinforcement, lower longitudinal reinforcement, and poured beam concrete. The ends of the H-beams are welded to the outer wall of the square steel tube, and the upper and lower longitudinal reinforcements are welded to the upper and lower flanges of the H-beams, respectively.

[0009] Furthermore, the upper beam longitudinal reinforcement includes a first row and a second row of upper beam longitudinal reinforcement distributed at intervals, and the lower beam longitudinal reinforcement includes a second row of lower beam longitudinal reinforcement distributed at intervals and a first row of lower beam longitudinal reinforcement; wherein, the first row of upper beam longitudinal reinforcement is welded to the upper flange of the H-beam, and the first row of lower beam longitudinal reinforcement is welded to the lower flange of the H-beam; the second row of upper beam longitudinal reinforcement and the second row of lower beam longitudinal reinforcement are tied together with tie bars.

[0010] Furthermore, the square steel tube is provided with several internal partitions, the positions of which correspond to the positions of the upper and lower flanges of the H-beam.

[0011] Furthermore, the square steel tube concrete column is provided with beam top reinforcement and beam bottom reinforcement distributed at intervals, and the beam top reinforcement and beam bottom reinforcement are welded on both sides to the two inner partition plates corresponding to the H-shaped steel on both sides.

[0012] Furthermore, the square steel tube concrete column is also provided with a waist reinforcement and rectangular stirrups inside, and the waist reinforcement is tied to the stirrups.

[0013] Furthermore, several studs are welded onto the inner partition.

[0014] Furthermore, the surface of the H-beam is welded with several studs.

[0015] Compared with the prior art, the variable height difference connection structure provided by this utility model has the following advantages:

[0016] 1. Improve connection strength: By setting up a variable height difference connection between the steel tube concrete column and the concrete frame beam, the stress distribution can be more uniform, reducing stress concentration and the risk of fatigue failure at the connection point. This effectively improves the strength and stability of the connection point and ensures the safety of the structure.

[0017] 2. Adaptable to different height requirements; This connection structure allows for adjustment of the height difference between the connection points according to actual needs, adapting to building structures with different height requirements.

[0018] 3. Enhance local load-bearing capacity; increasing the beam height in areas that need to withstand large loads can significantly improve the load-bearing capacity of those areas, meet design requirements, and adapt to different load demands; variable height difference design can flexibly adjust the beam height according to the actual load distribution, making the structure more rational and economical.

[0019] 4. Reduce material usage: By using different beam heights in different locations, excessive materials can be avoided in areas where high load-bearing capacity is not required, thereby saving steel and concrete and reducing costs. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the horizontal cross-section of a square steel tube concrete column and a concrete beam with varying height difference, provided in an embodiment of this utility model.

[0021] Figure 2 It is along Figure 1 Schematic diagram of the cross section along section AA.

[0022] Marked in the image:

[0023] 1. Square steel tube concrete column; 11. Square steel tube; 12. Column concrete; 13. Internal diaphragm; 14. Beam top reinforcement; 15. Beam bottom reinforcement; 16. Web reinforcement; 17. Stirrups; 18. Shear studs; 2. Concrete frame beam; 21. H-beam; 221. Longitudinal reinforcement of the first row of upper beams; 222. Longitudinal reinforcement of the second row of upper beams; 223. Longitudinal reinforcement of the second row of lower beams; 224. Tie bars; 23. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0026] Please see Figure 1 and Figure 2This embodiment illustrates a variable height connection structure between a square steel tube concrete column and a concrete beam, including a square steel tube concrete column 1 and concrete frame beams 2 located on opposite sides of the column. The concrete frame beams 2 on both sides are staggered by a certain height. The square steel tube concrete column 1 includes a square steel tube 11 and column concrete 12 poured inside it. The concrete frame beam 2 includes an H-beam 21, upper beam longitudinal reinforcement, lower beam longitudinal reinforcement, and poured beam concrete. The end of the H-beam is welded to the outer wall of the square steel tube 11, and the upper and lower beam longitudinal reinforcements are welded to the upper and lower flanges of the H-beam 21, respectively.

[0027] Specifically, in this embodiment, the upper beam longitudinal reinforcement includes a first row of upper beam longitudinal reinforcement 221 and a second row of upper beam longitudinal reinforcement 222, which are spaced apart vertically. The lower beam longitudinal reinforcement includes a second row of lower beam longitudinal reinforcement 223 and a first row of lower beam longitudinal reinforcement 224, which are spaced apart vertically. The first row of upper beam longitudinal reinforcement 221 is welded to the upper flange of the H-beam 21, and the first row of lower beam longitudinal reinforcement 224 is welded to the lower flange of the H-beam 21. The second row of upper beam longitudinal reinforcement 222 and the second row of lower beam longitudinal reinforcement 223 are tied together by tie bars 23, which are spaced 100mm apart.

[0028] The square steel tube 11 has several internal partitions 13 inside, and the positions of the internal partitions 13 correspond to the positions of the upper and lower flanges of the H-beam 21. By setting the internal partitions 13, the structural strength of the square steel tube 11 can be enhanced, as well as its shear strength can be improved.

[0029] The square steel tube concrete column 1 has upper and lower spaced beam top reinforcement 14 and beam bottom reinforcement 15 inside. The beam top reinforcement 14 and beam bottom reinforcement 15 are welded on both sides to two inner partition plates 13 corresponding to the H-beams 21 on both sides. By welding the beam top reinforcement 14 and beam bottom reinforcement 15 to the inner partition plates 13, the square steel tube 11, inner partition plates 13, and H-beams 21 can be firmly connected together.

[0030] Furthermore, the square steel-concrete composite column 1 is also equipped with web reinforcement 16 and rectangular stirrups 17, with the web reinforcement 16 tied to the stirrups 16. By setting the stirrups 17, the shear strength of the concrete frame beam 2 and the component can be effectively improved, preventing shear failure under shear force. At the same time, the stirrups 17, by confining the concrete, distribute the shear force to a larger area, reducing local stress concentration; they can also prevent crack propagation, limit crack width, and improve the durability and service performance of the component.

[0031] Furthermore, in this embodiment, a number of studs 18 are welded to the surfaces of the inner partition 13 and the H-beam 21. By setting the studs 18, the bonding force between the square steel pipe 11 and the column concrete 12, and between the H-beam 21 and the beam concrete can be improved.

[0032] In summary, the variable height difference connection structure provided in this embodiment has at least the following advantages compared with the prior art:

[0033] 1. Improve connection strength: By setting a variable height difference connection between the steel tube concrete column 1 and the concrete frame beam 2, the stress distribution can be more uniform, reducing stress concentration and the risk of fatigue failure at the connection point. This effectively improves the strength and stability of the connection point and ensures the safety of the structure.

[0034] 2. Adaptable to different height requirements; This connection structure allows for adjustment of the height difference between the connection points according to actual needs, adapting to building structures with different height requirements.

[0035] 3. Enhance local load-bearing capacity; increasing the beam height in areas that need to withstand large loads can significantly improve the load-bearing capacity of those areas, meet design requirements, and adapt to different load demands; variable height difference design can flexibly adjust the beam height according to the actual load distribution, making the structure more rational and economical.

[0036] 4. Reduce material usage: By using different beam heights in different locations, excessive materials can be avoided in areas where high load-bearing capacity is not required, thereby saving steel and concrete and reducing costs.

[0037] 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 variable-height connection structure between a square steel-concrete composite column and a concrete beam, characterized in that, It includes a square steel tube concrete column and concrete frame beams located on opposite sides of the column, with the concrete frame beams on both sides staggered at a certain height. The square steel tube concrete column includes a square steel tube and column concrete poured inside it. The concrete frame beam includes H-beams, upper beam longitudinal reinforcement, lower beam longitudinal reinforcement, and poured beam concrete. The ends of the H-beams are welded to the outer wall of the square steel tubes, and the upper and lower beam longitudinal reinforcements are welded to the upper and lower flanges of the H-beams, respectively.

2. The variable elevation difference connection structure according to claim 1, characterized in that, The upper beam longitudinal reinforcement includes a first row and a second row of upper beam longitudinal reinforcement distributed at intervals. The lower beam longitudinal reinforcement includes a second row of lower beam longitudinal reinforcement distributed at intervals and a first row of lower beam longitudinal reinforcement. The first row of upper beam longitudinal reinforcement is welded to the upper flange of the H-beam, and the first row of lower beam longitudinal reinforcement is welded to the lower flange of the H-beam. The second row of upper beam longitudinal reinforcement and the second row of lower beam longitudinal reinforcement are tied together with tie bars.

3. The variable elevation difference connection structure according to claim 1, characterized in that, The square steel tube has several internal partitions inside, and the positions of the internal partitions correspond to the positions of the upper and lower flanges of the H-beam.

4. The variable elevation difference connection structure according to claim 3, characterized in that, The square steel tube concrete column is provided with beam top reinforcement and beam bottom reinforcement distributed at intervals. The beam top reinforcement and beam bottom reinforcement are welded on both sides to the two inner partition plates corresponding to the H-shaped steel on both sides.

5. The variable elevation difference connection structure according to claim 3, characterized in that, The square steel tube concrete column is also provided with a waist reinforcement and rectangular stirrups inside, and the waist reinforcement is tied to the stirrups.

6. The variable elevation difference connection structure according to claim 3, characterized in that, Several studs are welded onto the inner partition.

7. The variable elevation difference connection structure according to claim 1, characterized in that, The surface of the H-beam is welded with several studs.

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