CN104314234A

CN104314234A - Steel bone-steel tube gangue concrete combination post with T-shaped section

Info

Publication number: CN104314234A
Application number: CN201410590102.3A
Authority: CN
Inventors: 徐亚丰; 朱绍杰; 吕丛丛; 时庆泽; 陈谦; 翟章琳
Original assignee: Shenyang Jianzhu University
Current assignee: Shenyang Jianzhu University
Priority date: 2014-10-29
Filing date: 2014-10-29
Publication date: 2015-01-28

Abstract

The invention relates to a combination post with a T-shaped section in civil engineering. The steel bone-steel tube gangue concrete combination post with the T-shaped section consists of steel bones, a steel tube, a reinforcing steel bar skeleton and concrete, wherein the steel bone is formed by welding steel plates and is positioned on a limb of a T-shaped post enclosed by stirrups; the steel tube is positioned in the core of the T-shaped post; concrete is filled in the T-shaped post enclosed by the stirrups and in the steel tube; the steel bone is welded into a T shape. The concrete is gangue concrete; the concrete contains crushed gangue blocks which serve as aggregate. The self weight of the post is reduced by the gangue concrete; resources are saved; the environment is protected; the reinforcing steel bar skeleton has a restraining effect on the concrete, so that the bearing capacity of the post is enhanced. The steel bone-steel tube concrete combination post is a main component of a framework structure of a high-rise and large-span building, and has the characteristics of high bearing capacity, high rigidity, light weight, high plasticity, good toughness, impact resistance, fatigue resistance and seismic performance, high durability, energy conservation, environment friendliness and the like.

Description

Steel frame-steel pipe coal gangue concrete T section coupled column

Technical field

Having the present invention relates to a kind of concrete component, particularly related to a kind of for the concrete T-shaped post in civil engineering, is a kind of novel T section coupled column.

Background technology

Current social, along with the lifting of expanding economy and Living consumption, the requirement of people to house is more and more higher, especially more and more payes attention to building structure and room layout.Sectional dimension due to common concrete column is often greater than the thickness of body of wall, have impact on the use of the interior space, is difficult to meet building requirement attractive in appearance.In order to address this problem, there is the form of structure of RC T shape post.The advantage of RC T shape column structure system is more outstanding, and scholar both domestic and external, expert are to this has been extensive, deep research.The theoretical system of RC T shape post basically forms, and the provinces and cities such as such as Tianjin, Shenyang, Guangdong, Shanxi have completed writing of local code, and and guide in engineering practice, building area reaches tens million of square metres.

But along with the development of Super High and long span building structure, the shortcoming of pure RC T shape post is more and more outstanding.As being subject to the restriction of ratio of axial compressive force to axial compressive ultimate capacity of section, if still adopt reinforced concrete T shape post under larger load, the sectional dimension of post will be caused very large; The limb length of T-shaped post cannot be oversize, easily can produce shear lag phenomenon after post limb is long, and therefore usual length by the limb of T-shaped post is extended the deadline in certain proportion with limb; T-shaped pillar there occurs change due to section form, causes its mechanical characteristic also to there occurs change, and compared with ordinary rectangular post, supporting capacity and ductility decline all to some extent, and anti-seismic performance is unsatisfactory.

Meanwhile, gangue comprehensive utilization is the importance of comprehensive utilization of resources, and being the inevitable choice of China's energy resource structure, is also one of important measures of the Implement of sustainable development strategy." 12 " period " Central Committee of the Communist Party of China is about the suggestion of formulating national economy and social development the 12 five-year plan " points out: adhere to using building a resource-conserving and environment-friendly society as the important origin of force of accelerating transformation of the mode of economic development.Deeply implement and economize on resources and protection of the environment fundamental state policy, energy conservation, reduce greenhouse gas emission intensity, develop a circular economy, promote low-carbon technology, respond actively climate change.And the main aspect of the comprehensive utilization of gangue produces constructional materials exactly, comprise and produce lightweight aggregate, building product etc.

Therefore, herein under above-mentioned background, propose a kind of novel steel frame-steel pipe coal gangue concrete T section coupled column, this kind of coupled column combines the advantage of RC T shape post, steel core concrete column, combined steel and concrete column, coal gangue concrete post, alleviate resource pressure and environmental pressure, widen the application and development space of concrete T-shaped post greatly, there is very important Research Significance.

Summary of the invention

The object of this invention is to provide a kind of steel frame-steel pipe coal gangue concrete T section coupled column; this Novel combined column improves the stress performance of reinforced concrete T shape post incessantly, and takes full advantage of gangue, has accomplished effective utilization of discarded object; save resource, protect environment.The present invention is achieved through the following technical solutions: the T steel bone of steel frame-steel pipe coal gangue concrete T section coupled column is formed by Plate Welding, be positioned on the limb of T-shaped post, steel pipe is positioned at the center of post, first reinforcing bar and steel pipe are connected and fixed by welding or bolt when test specimen makes, then assembling reinforcement skeleton, formwork, builds coal gangue concrete.It is characterized in that: the reinforcing bar be positioned on T-shaped post limb improves limb portion stress performance; The steel pipe being positioned at core place improves supporting capacity and the ductility of T-shaped post; Containing the gangue fragment serving as aggregate in concrete, alleviate the deadweight of pillar; Due to the existence of peripheral coal gangue concrete, improve the fire resistance of coupled column.

Serve as the gangue fragment of aggregate in concrete, particle diameter at the gangue fragment of 5mm ~ 30mm, as the coarse aggregate in coal gangue concrete.According to every cubic metre of coal gangue concrete volume, coarse aggregate gangue weight 200kg ~ 1400kg, cement 400 kg ~ 600 kg, water 150 kg ~ 300 kg, the ratio of fine sand 150kg ~ 1500kg fully stirs.Gangue is too much not all right, can affect the intensity of coal gangue concrete, very few also not all right.

Advantage of the present invention and effect are:

1. make full use of discarded gangue, accomplish to turn waste into wealth, energy conservation, environmental protection;

2. steel pipe is positioned at the inside of direction concrete crossover sites in length and breadth, is subject to the protection of outer concrete, has good fire-resistant, decay resistance;

3. steel pipe inner concrete is in three-phase pressured state, improve the ultimate bearing capacity of pillar, is the application exhaust space of high-strength concrete;

4. reinforcing bar is positioned at the limb portion of T-shaped post, improves the stress performance in limb portion;

Containing the gangue fragment serving as aggregate in 5 concrete, alleviate the deadweight of pillar;

6. can first construct reinforcing bar, steel pipe, reinforcing bar, steel pipe are connected and fixed at bottom welding or bolt, then muscle and stirrup are indulged in colligation, pour into a mould coal gangue concrete after forming skeleton, thus form superposed column;

7., because the existence of reinforcing bar, steel pipe improves the ductility of post, improve the ultimate bearing capacity of post, be conducive to earthquake zone seismic design;

8. widen the application and development space of concrete T-shaped post, beautify architectural appearance.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of steel frame-steel pipe coal gangue concrete T section coupled column.

Be made up of reinforcing bar, steel pipe, coal gangue concrete and cage of reinforcement, to be wherein positioned at steel pipe inside and outside for coal gangue concrete, and reinforcing bar is positioned on the four limbs of T-shaped post, and steel pipe is positioned at the center of T-shaped post, and cage of reinforcement is in the surrounding of T-shaped post.In figure: 1 is longitudinal reinforcement, 2 is coal gangue concrete, and 3 is steel pipe, and 4 is stirrup, and 5 is reinforcing bar.

Detailed description of the invention

Steel frame-steel pipe coal gangue concrete T section coupled column of the present invention is made up of reinforcing bar, steel pipe, cage of reinforcement and concrete, reinforcing bar 5 is formed by Plate Welding, reinforcing bar is positioned on the limb of the cage of reinforcement T-shaped post that stirrup 4 surrounds, steel pipe 3 is positioned at the core of T-shaped post, is full of concrete in the cage of reinforcement T-shaped post that stirrup 4 surrounds and steel pipe 3.Reinforcing bar is welded into T-shaped shape.Described concrete is coal gangue concrete, and containing the gangue fragment serving as aggregate in concrete, described coal gangue concrete comprises the rough coal spoil aggregate of particle diameter at 5mm ~ 30mm.According to every cubic metre of coal gangue concrete volume, coarse aggregate gangue weight 200kg ~ 1400kg, cement 400 kg ~ 600 kg, water 150 kg ~ 300 kg, the ratio of fine sand 150kg ~ 1500kg fully stirs.

Concrete technology is as follows:

1. according to the rules Plate Welding is become reinforcing bar;

2. reinforcing bar and steel-pipe welding or bolt are connected and fixed, and keep vertical or certain angle;

3. assembling reinforcement skeleton;

4. in cage of reinforcement lateral branch template;

5. make the gangue fragment of particle diameter at 5mm ~ 30mm, as coarse aggregate in coal gangue concrete;

6. according to every cubic metre of coal gangue concrete volume, coarse aggregate gangue weight 200kg ~ 1400kg, cement 400 kg ~ 600 kg, water 150 kg ~ 300 kg, the ratio of fine sand 150kg ~ 1500kg fully stirs;

7. pour into a mould coal gangue concrete;

8. periodic maintenance;

9. arrive regulation maintenance day after date, form removal is shaping.

Claims

1. steel frame-steel pipe coal gangue concrete T section coupled column, be made up of reinforcing bar, steel pipe, cage of reinforcement and concrete, reinforcing bar (5) is formed by Plate Welding, reinforcing bar is positioned on the limb of the cage of reinforcement T-shaped post that stirrup (4) surrounds, steel pipe (3) is positioned at the core of T-shaped post, is full of concrete in the cage of reinforcement T-shaped post that stirrup (4) surrounds and steel pipe (3).

2. require the steel frame-steel pipe coal gangue concrete T section coupled column described in 1 according to claim, it is characterized in that: reinforcing bar (5) is welded into T-shaped shape.

3. require described steel frame-steel pipe coal gangue concrete T section coupled column according to right 1, it is characterized in that: described concrete is coal gangue concrete, containing the gangue fragment serving as aggregate in concrete.

4. require the steel frame-steel pipe coal gangue concrete T section coupled column described in 2 according to right 1, it is characterized in that: described coal gangue concrete comprises the rough coal spoil aggregate of particle diameter at 5mm ~ 30mm.

5. the coal gangue concrete in steel frame-steel pipe coal gangue concrete T section coupled column as claimed in claim 3, it is characterized in that: according to every cubic metre of coal gangue concrete volume, coarse aggregate gangue weight 200kg ~ 1400kg, cement 400 kg ~ 600 kg, water 150 kg ~ 300 kg, the ratio of fine sand 150kg ~ 1500kg fully stirs.