Unlock instant, AI-driven research and patent intelligence for your innovation.

A special-shaped steel tube concrete column with a built-in skeleton

A technology of steel pipe concrete and special-shaped columns, which is applied in the direction of columns, pillars, pier columns, etc., can solve the problems of small operating space, thermal stress, uneven welding seam, etc., and achieve the effect of guaranteeing the effect and saving costs

Inactive Publication Date: 2021-06-11
CHINA NORTHWEST ARCHITECTURE DESIGN & RES INST CO LTD +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the traditional concrete-filled steel tube special-shaped column, the steel plate is made into the outer shell of the special-shaped column, and concrete is poured into the cavity to form an integrated steel tube concrete. Under the action of axial load, the inner corner area of ​​the traditional concrete-filled steel tube special-shaped column is most prone to stress concentration and damage. That is, the phenomenon of internal angle will greatly weaken the vertical bearing capacity of the structural column
In the prior art, methods such as multi-cavity steel pipe splicing or welding of reinforcing ribs are used to improve the restraint of concrete. However, whether it is steel pipe splicing or adding reinforcing ribs, welding process is involved. The welding process not only causes certain damage to the steel pipe, but also Thermal stress is generated, and at the same time, problems such as unevenness and missing welding between welds lead to the problem of how much local stress is easy to occur
And it is difficult to weld inside the steel plate shell, the operating space is small, the overall construction is difficult, and the project period is long

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A special-shaped steel tube concrete column with a built-in skeleton
  • A special-shaped steel tube concrete column with a built-in skeleton
  • A special-shaped steel tube concrete column with a built-in skeleton

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Refer to attached Figure 1-4 As shown, a special-shaped steel pipe concrete column with a built-in skeleton includes a hollow column 1 and a skeleton 2 made of steel plates, the skeleton 2 is placed in the cavity of the column 1, and the column 1 includes an intersection area 5 and several columns. Limb 6, the skeleton 2 includes some longitudinal ribs 3 and some transverse ribs 4, the longitudinal ribs 3 are arranged in the column limb 6, and the two ends of the transverse ribs 4 are respectively connected with two longitudinal ribs 3; The ratio of the height to the height of the 6 limbs is less than or equal to 5.

[0033] The skeleton 2 is located inside the column 1, and is placed across the intersection area 5 of the column 1. The skeleton 2 covers the intersection area 5 as much as possible. When the concrete in the center of the column 1 expands, the skeleton 2 is first squeezed. The internal corner 7 of the cylinder 1 is correspondingly provided with two longi...

Embodiment 2

[0039] Please refer to Figure 1-4 As shown, the difference between this embodiment and Embodiment 1 is that the cross section of the column 1 in this embodiment is T-shaped, and the skeleton 2 is optimized for the T-shaped special-shaped column.

[0040] In this embodiment, when the cross section of the column body 1 is T-shaped, the transverse reinforcing rib 4 includes a first transverse reinforcing rib 41 and a second transverse reinforcing rib 42, the second transverse reinforcing rib 42 is an arc-shaped structure, and three longitudinal reinforcing ribs Rib 3 , two rows of first transverse reinforcing ribs 41 and one row of second transverse reinforcing ribs 42 form skeleton 2 . When the special-shaped column is T-shaped, the cylindrical surface without internal angle 7 can be protected by the arc-shaped transverse reinforcement 4, and the arc-shaped reinforcement is evenly stressed when the concrete expands laterally.

[0041] In this embodiment, compared with the cros...

Embodiment 3

[0043] Please refer to Figure 1-4 As shown, the difference between this embodiment and Embodiment 3 is that the cross-section of the special-shaped column in this embodiment is L-shaped, and the structure of the skeleton 2 is optimized for the column 1 .

[0044] In this embodiment, when the cross section of the column 1 is L-shaped, the transverse reinforcing rib 4 includes a first transverse reinforcing rib 41 and a second transverse reinforcing rib 42, the second transverse reinforcing rib 42 is an arc-shaped structure, two longitudinal ribs The reinforcing rib 3 , a row of first transverse reinforcing ribs 41 and a row of second transverse reinforcing ribs 42 form a skeleton 2 , and the skeleton 2 has a semicircular structure. Similar to the T-shaped special-shaped column, the cylindrical surface of the L-shaped special-shaped column without internal corner 7 is protected by arc-shaped transverse ribs 4, so that the skeleton 2 is more evenly stressed.

[0045] As mention...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a special-shaped steel pipe concrete column with a built-in skeleton, which includes a hollow column made of steel plates and a skeleton, the skeleton is placed in the cavity of the column, the column includes an intersection area and several column limbs, and the skeleton includes several Longitudinal reinforcing ribs and several transverse reinforcing ribs, the longitudinal reinforcing ribs are arranged in the column limb, and the two ends of the transverse reinforcing ribs are respectively connected with two longitudinal reinforcing ribs. The concrete in the intersection area is restrained by setting a skeleton in the cavity of the steel pipe to limit the lateral expansion of the concrete and protect the inner corner of the special-shaped column. The skeleton adopts a frame design to form a mutually restrictive structure to prevent local uneven and excessive stress. Lead to deformation of the skeleton, thus losing the protection of the female corners.

Description

technical field [0001] The invention relates to the field of steel pipe concrete, in particular to a special-shaped steel pipe concrete column with a built-in skeleton. Background technique [0002] Special-shaped columns refer to columns with different geometrical cross-sections, such as: T, L, cross-shaped columns, etc. And the column whose limb-width-thickness ratio of each limb of the section is not greater than 4. Generally, the limbs of special-shaped columns are equal in length, and their earthquake resistance is better than that of unequal special-shaped columns. [0003] In the traditional concrete-filled steel tube special-shaped column, the steel plate is made into the outer shell of the special-shaped column, and concrete is poured into the cavity to form an integrated steel tube concrete. Under the action of axial load, the inner corner area of ​​the traditional concrete-filled steel tube special-shaped column is most prone to stress concentration and damage. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E04C3/34
CPCE04C3/34
Inventor 周鹏葛鸿鹏徐金俊薛建阳陈宗平刘祖强赵新宇黄新良陈宇良
Owner CHINA NORTHWEST ARCHITECTURE DESIGN & RES INST CO LTD