CN216839929U

CN216839929U - Variable cross section steel core concrete column crossover sub

Info

Publication number: CN216839929U
Application number: CN202123099776.8U
Authority: CN
Inventors: 彭宁; 任峰
Original assignee: CITIC General Institute of Architectural Design and Research Co Ltd
Current assignee: CITIC General Institute of Architectural Design and Research Co Ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-06-28
Anticipated expiration: 2031-12-10

Abstract

A kind of variable cross section steel tube concrete column crossover sub, including the crossover sub body, the top surface of the crossover sub body is square annular, the bottom surface is circular, the cross section shape of the crossover sub body changes from square annular to circular ring gradually from top to bottom, the top surface connects with the square annular plate of horizontal stiffening, the bottom surface connects with the circular plate of horizontal stiffening, the middle part connects with the horizontal stiffening, the cross section shape of the said horizontal stiffening is identical to the cross section shape of the said crossover sub body; a plurality of vertical stiffening plates which are connected with the peripheral web plate of the adapter body in a welding mode are arranged in the adapter body at intervals, studs connected to the peripheral web plate of the adapter body are arranged between the vertical stiffening plates, and concrete is filled in the peripheral web plate of the adapter body. Through the configuration the utility model discloses can reach the changeable purpose of frame post below circle cross section shape, satisfy the changeable needs of building at the frame post bending resistance bearing capacity of different altitude ranges simultaneously, also can be convenient for be connected with the brickwork infilled wall, avoid the brickwork fracture.

Description

Variable cross section steel core concrete column crossover sub

Technical Field

The utility model relates to a building engineering technical field especially relates to a variable cross section steel core concrete column crossover sub.

Background

In engineering practice, because of the building functional requirement, building bottom floor needs the pleasing to the eye requirement of big space, and the frame post adopts steel core concrete column, and the upper portion floor does not have big space requirement, and frame post limit and brickwork have the requirement of being connected or the frame post needs to support members such as large-span steel truss, girder steel, if still adopt steel core concrete column, there is following shortcoming: 1. the connecting structure of the arc-shaped column edge and the masonry is inconvenient and easy to crack; 2. under the condition that the side length and the diameter of the section are the same and the thickness of the web plate is also the same, the section bending resistance bearing capacity of the square steel pipe concrete column is larger than that of the round steel pipe column. The specification and the drawing set do not show the condition that the upper and lower section shapes of the concrete filled steel tubular column are different, except the condition that the design of the concrete filled steel tubular column with the variable section can be adopted, the design of the variable section can also be considered in some special conditions (for example, the original design is that a column base is embedded according to a round steel tubular column, and the upper part needs to be changed into a rectangular concrete filled steel tubular column due to scheme modification).

Disclosure of Invention

In order to fill up the not enough of standard and atlas on variable cross section steel core concrete column structure type, the utility model provides a variable cross section steel core concrete column crossover sub provides optional structural scheme for relevant node design.

In order to achieve the above purpose, the utility model discloses an adopt following technical scheme: a kind of variable cross section steel tube concrete column crossover sub, including the crossover sub body, the top surface of the crossover sub body is square annular, the bottom surface is circular, the cross section shape of the crossover sub body changes from square annular to circular gradually from top to bottom, the top surface of the crossover sub body connects with the square annular plate of horizontal stiffening, the bottom surface connects with the circular plate of horizontal stiffening, the middle part of the crossover sub body connects with the horizontal stiffening annular plate, the cross section shape of the said horizontal stiffening annular plate is identical to the cross section shape of the place of the crossover sub body; a plurality of vertical stiffening plates which are connected with the peripheral web plate of the adapter body in a welding mode are arranged in the adapter body at intervals, studs connected to the peripheral web plate of the adapter body are arranged between the vertical stiffening plates, and concrete is filled in the peripheral web plate of the adapter body.

Concrete pouring holes not smaller than 200mm and air holes not smaller than 25mm are reserved on the transverse stiffening square ring plate, the transverse stiffening circular ring plate and the transverse stiffening ring plate.

The transverse stiffening ring plates are arranged according to a conventional structure, the vertical stiffening plates are designed according to the structure of the stiffening plates in the rectangular steel pipe column, and in order to strengthen the connection between the concrete inside the steel pipe and the steel pipe, the studs are arranged between the vertical stiffening plates.

The utility model has the advantages that: through the configuration the utility model discloses a variable cross section steel core concrete column crossover sub can reach the changeable purpose of frame post cross sectional shape, satisfies the changeable needs of building at the frame post bending resistance bearing capacity of not co-altitude range simultaneously, also can be convenient to be connected with the infilled wall brickwork, avoids the brickwork fracture, has good construction maneuverability and economic nature.

Drawings

FIG. 1 shows a cross-section-variable steel pipe concrete column adapter of the present invention.

Fig. 2 is an enlarged view of a-a of fig. 1.

Fig. 3 is an enlarged view of B-B of fig. 1.

Fig. 4 is an enlarged view of C-C of fig. 1.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

The variable cross-section steel pipe concrete column conversion joint scheme shown in the figures 1-4 is as follows: the top surface of the conversion joint body is square ring-shaped, the bottom surface of the conversion joint body is ring-shaped, the cross section shape of the conversion joint body from top to bottom gradually changes from square ring-shaped to ring-shaped, the top surface of the conversion joint body is connected with a transverse stiffening square ring plate 3, the bottom surface of the conversion joint body is connected with a transverse stiffening circular ring plate 1, the middle part of the conversion joint body is connected with a transverse stiffening circular ring plate 2, the cross section shape of the transverse stiffening circular ring plate is consistent with the cross section shape of the conversion joint body, such as a square ring plate 2 with four arc corners; a plurality of vertical stiffening plates 4 which are connected with the peripheral web plate of the adapter body in a welding mode are arranged in the adapter body at intervals, studs 5 connected to the peripheral web plate of the adapter body are arranged between the vertical stiffening plates 4, and concrete is filled in the peripheral web plate of the adapter body.

In fig. 1, the upper part of the conversion joint is connected with a square steel pipe with the side length of B and the thickness of tw1, and the lower part of the conversion joint is connected with a round steel pipe with the diameter of D and the thickness of tw2, so that the thickness tw3 of the conversion joint is the larger value of tw1 and tw 2. The mean value of the maximum slope and the minimum slope of the variable section is not more than 1: 6.

as shown in figures 2, 3 and 4, the inner wall of the adapter is provided with vertical stiffeners 4, the thickness of each vertical stiffener 4 is 0.75tw3, the plate width is not less than 250mm, and the pipe diameter is not more than 0.25 times. This vertical stiffening rib makes the horizontal nothing of crossover sub panel prop up length and is not more than 1000mm, and the crossover sub inner wall sets up level and vertical interval and is not more than 300 mm's peg 5 simultaneously, and the purpose of this structure is in order to prevent that the concrete filled steel tube crossover sub pipe wall from being pressed the bucking to and avoid the interior concrete shrink to produce adverse effect to concrete filled steel tube's combined action performance.

As shown in figures 2, 3 and 4, three transverse stiffening ring plates (a transverse stiffening square ring plate 3, a transverse stiffening circular ring plate 1 and a transverse stiffening ring plate 2) are respectively arranged at the upper part, the middle part and the lower part of the conversion joint of the variable cross-section steel pipe concrete column, a concrete pouring hole 7 not smaller than 200mm and an air vent 6 not smaller than 25mm need to be reserved on the ring plates, the transverse

stiffening ring plates

1, 2 and 3 and the vertical stiffening ribs 4 are arranged to increase the external rigidity of the wall surface of the steel pipe, and the deformation of the pipe wall caused by construction can be effectively prevented.

Claims

1. The utility model provides a variable cross section steel core concrete column crossover sub, characterized by: the top surface of the conversion joint body is square ring-shaped, the bottom surface of the conversion joint body is ring-shaped, the cross section shape of the conversion joint body gradually changes from square ring-shaped to ring-shaped from top to bottom, the top surface of the conversion joint body is connected with a transverse stiffening square ring plate, the bottom surface of the conversion joint body is connected with a transverse stiffening circular ring plate, the middle part of the conversion joint body is connected with a transverse stiffening circular ring plate, and the cross section shape of the transverse stiffening circular ring plate is consistent with that of the conversion joint body; a plurality of vertical stiffening plates which are connected with the peripheral web plate of the adapter body in a welding mode are arranged in the adapter body at intervals, studs connected to the peripheral web plate of the adapter body are arranged between the vertical stiffening plates, and concrete is filled in the peripheral web plate of the adapter body.

2. The adapter for concrete filled steel tubular columns according to claim 1, wherein: concrete pouring holes not smaller than 200mm and air holes not smaller than 25mm are reserved on the transverse stiffening square ring plate, the transverse stiffening circular ring plate and the transverse stiffening ring plate.