CN218374720U

CN218374720U - Large-section combined assembly type steel pipe concrete column

Info

Publication number: CN218374720U
Application number: CN202222393363.9U
Authority: CN
Inventors: 付强; 徐春晖; 牟永花; 陈琦; 张琳琦; 汤景富; 谭妍
Original assignee: Yantai Feilong Construction Technology R & D Center Co ltd
Current assignee: Yantai Feilong Construction Technology R & D Center Co ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-01-24
Anticipated expiration: 2032-09-09

Abstract

The utility model relates to a big cross-section combination assembled steel core concrete column, including interior steel pipe (2) and cover outer steel pipe (1) in the interior steel pipe (2) outside, concrete placement space has between interior steel pipe (2) and outer steel pipe (1), fixedly connected with annular plate form and set up stiffening plate (3) of a plurality of concrete from discharge orifice (4) between interior steel pipe (2) and outer steel pipe (1). For current steel core concrete column, the utility model discloses steel core concrete column's mechanical properties is better, can show the overall stability and the ductility that promote combination steel-pipe column, and anti-seismic performance is more excellent. The inner stiffening plate enables the inner steel pipe column and the outer steel pipe column to be mutually supported, so that the instability critical stress of the inner pipe is obviously increased, and the bearing capacity of the steel pipe concrete column is improved.

Description

Large-section combined assembly type steel pipe concrete column

Technical Field

The utility model relates to a large cross-section assembled combination steel core concrete column, large cross-section generally indicates that outer steel pipe diameter is greater than 1m.

Background

The combined steel pipe concrete column is widely applied to industrial and civil fabricated building structures due to the advantages of high bearing capacity, high lateral stiffness, light dead weight, good earthquake resistance, high construction speed and the like. The combined concrete-filled steel tubular column in the prior art has great disadvantages in practical engineering: mainly lie in the inner tube because the packing that lacks the concrete, and the concrete in the inner tube outside can not effectively support the inner tube and to the inboard whole or local unstability, bucking, under very big vertical load and horizontal load effect, the extrusion of concrete to the inner tube leads to inner tube unstability bucking more easily to lead to whole root post bearing capacity to reduce by a wide margin, whole unstability destruction even.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a large-section combined assembled concrete filled steel tubular column, which firstly solves the instability problem of the inner column caused by lack of concrete support; and secondly, reliable butt joint between more than two inner steel pipes and between more than two outer steel pipes is realized.

The technical scheme of the utility model as follows:

the utility model provides a big cross-section combination assembled steel core concrete column, includes interior steel pipe and the outer steel pipe of cover in the interior steel pipe outside, the concrete placement space has between interior steel pipe and the outer steel pipe, its characterized in that: and an annular plate-shaped stiffening plate provided with a plurality of concrete self-flowing holes is fixedly connected between the inner steel pipe and the outer steel pipe.

Preferably, the outer steel pipe is assembled by more than two sections of steel pipes, a first liner pipe is welded and fixed on the inner side of the end part of each steel pipe, the length of the first liner pipe exceeds the end part of each steel pipe, the adjacent butted steel pipes are sleeved on the outer sides of the exceeding parts, and the adjacent butted steel pipes are in butt welding.

Preferably, the inner steel pipe is assembled by more than two sections of steel pipes, a second liner pipe is welded and fixed on the inner side of the end part of each steel pipe, the length of the second liner pipe exceeds the end part of each steel pipe, the adjacent butted steel pipes are sleeved on the outer sides of the exceeding parts, and the adjacent butted steel pipes are in butt welding.

Preferably, the concrete casting space is filled with concrete.

Preferably, the pipe wall of the outer steel pipe is provided with a pouring hole communicated with the concrete pouring space.

The utility model has the advantages of:

first, for current steel core concrete column, the utility model discloses the mechanical properties of post is better, can show the overall stability and the ductility that promote combination steel-pipe column, and anti-seismic performance is more excellent. The inner stiffening plate enables the inner steel pipe column and the outer steel pipe column to be mutually supported, so that the instability critical stress of the inner pipe is obviously increased, and the bearing capacity of the steel pipe concrete column is improved. Meanwhile, as each section of the outer steel pipe is provided with a pouring hole, the concrete pouring is more convenient.

Second, the utility model discloses owing to adopted the combination steel pipe, the butt joint location is reliable between the adjacent steel pipe, has avoided ligature reinforcing bar and on-the-spot formwork, is showing for the construction speed, reduced the cost of labor.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic view of the structure of the present invention viewed from above before concrete placement.

Fig. 3 is a schematic view of the structure of the utility model from above after concrete placement.

1. The concrete self-flowing hole is formed in the outer steel pipe, 2, the inner steel pipe, 3, the stiffening plate, 4, the concrete self-flowing hole, 5, the concrete, 6, the first liner pipe, 7, the pouring hole, 8 and the second liner pipe.

Detailed Description

The invention is further described with reference to the following figures and examples.

As shown in fig. 1, 2 and 3, the embodiment of the present invention includes an inner steel pipe 2 and an outer steel pipe 1 sleeved outside the inner steel pipe 2, and a concrete casting space is provided between the inner steel pipe 2 and the outer steel pipe 1. The wall of the outer steel pipe 1 is provided with four pouring holes 7 communicated with the concrete pouring space, and in the embodiment, the four pouring holes 7 are circumferentially and uniformly distributed. In the finished product of the steel tube concrete column, self-compacting concrete 5 is filled in the concrete pouring space. And a stiffening plate 3 which is in an annular plate shape and is provided with a plurality of concrete flowing holes 4 is welded between the inner steel pipe 2 and the outer steel pipe 1.

The outer steel pipe 1 is assembled by more than two sections of steel pipes, a first liner pipe 6 is welded and fixed on the inner side of the end part of each steel pipe, the length of the first liner pipe 6 exceeds the end part of each steel pipe, the adjacent butted steel pipes are sleeved on the outer sides of the exceeding parts, and the adjacent butted steel pipes are in butt welding.

The inner steel pipe 2 is assembled by more than two sections of steel pipes, the inner side of the end part of each steel pipe is fixedly welded with a second liner pipe 8, the length of each second liner pipe 8 exceeds the end part of each steel pipe, the adjacent butted steel pipes are sleeved on the outer sides of the exceeding parts, and the adjacent butted steel pipes are in butt welding.

The butt joint end part of the steel pipe is provided with a slope, an arc surface or a notch as a welding seam space. The weld space may be provided at the lower end of the upper steel pipe or the upper end of the lower steel pipe, as shown in fig. 1. Weld spaces can also be arranged at the lower end of the upper steel pipe and the upper end of the lower steel pipe.

In actual manufacturing, steel plates are respectively processed into an inner steel pipe 2 and an outer steel pipe 1 according to design requirements in a factory, a first liner pipe 6 for butt joint positioning between the adjacent outer steel pipes is welded on the inner side of the end part of the outer steel pipe 1, and a second liner pipe 8 for butt joint positioning between the adjacent inner steel pipes is welded on the inner side of the end part of the inner steel pipe 2. And (4) on a construction site, assembling the steel pipes and installing the stiffening plates 3, and finally pouring concrete through the pouring holes 7.

Each section of the outer steel pipe 1 is provided with four pouring holes 7 which are uniformly distributed in the circumferential direction, and when pouring is carried out, a section is poured from the bottom, and then the upper section is poured.

Claims

1. The utility model provides a big cross-section combination assembled steel core concrete column, includes outer steel pipe (1) in interior steel pipe (2) outside with the cover in interior steel pipe (2), concrete placement space has its characterized in that between interior steel pipe (2) and outer steel pipe (1): and an annular plate-shaped stiffening plate (3) provided with a plurality of concrete flowing holes (4) is fixedly connected between the inner steel pipe (2) and the outer steel pipe (1).

2. A large cross-section composite fabricated concrete-filled steel tubular column as claimed in claim 1, wherein: the outer steel pipe (1) is assembled by more than two sections of steel pipes, a first liner pipe (6) is welded and fixed on the inner side of the end part of each steel pipe, the length of the first liner pipe (6) exceeds the end part of each steel pipe, the adjacent butted steel pipes are sleeved on the outer sides of the exceeding parts, and the adjacent butted steel pipes are in butt welding.

3. A large cross-section sectional composite fabricated concrete filled steel tubular column as claimed in claim 1, wherein: the inner steel pipe (2) is assembled by more than two sections of steel pipes, a second liner pipe (8) is welded and fixed on the inner side of the end part of each steel pipe, the length of the second liner pipe (8) exceeds the end part of each steel pipe, the adjacent butted steel pipes are sleeved on the outer sides of the exceeding parts, and the adjacent butted steel pipes are in butt welding.

4. A large cross-section sectional composite fabricated concrete filled steel tubular column as claimed in claim 1, wherein: and concrete (5) is filled in the concrete pouring space.

5. A large cross-section sectional composite fabricated concrete filled steel tubular column as claimed in claim 1 or 2 or 3 or 4, wherein: and a pouring hole (7) communicated with the concrete pouring space is formed in the pipe wall of the outer steel pipe (1).