CN105604246A - Construction method of steel-section-concrete T-shaped section column - Google Patents

Abstract

The invention relates to a construction method of a steel-section-concrete T-shaped section column. The construction method comprises the following steps: 1) producing T-shaped steel sections and square steel tubes; 2) punching holes in steel flange plates and web plates on two sides of the T-shaped steel sections and in tube walls of four sides of the square steel tubes; 3) mounting the vertical T-shaped steel sections in each column limb of the T-shaped column respectively, and mounting vertical square steel tubes (4) in the core zone of the T-shaped section column, wherein all the steel sections (1-4) are anchored at the top of a foundation, and welding end plates to strengthen anchoring; 4) arranging longitudinal force-bearing steel bars; 5) arranging stirrups (9, 10) at certain intervals in directions parallel to the flange and the web plate of the T-shaped section column respectively by tightly adhering to the outer surfaces of the longitudinal force-bearing steel bars; 6) mounting a moulding plate; 7) pouring concrete. By the construction method of the steel-section-concrete T-shaped section column, provided by the invention, a specially-shaped column structure can be popularized and applied to high-rise buildings and buildings in a region with high seismic fortification intensity.

Description

A kind of steel reinforced concrete T section column construction method

Technical field

The invention belongs to steel reinforced concrete structure technical field, relate to a kind of steel reinforced concrete T section column construction method.

Background technology

The corner angle of the outstanding metope of frame column make post limb thickness equate with infilled wall, and the high length depth ratio of the limb of the each limb in cross section is not more than 4 post, are called abnormityPost, comprises L shaped, T shape, cross and Z-shaped etc. Adopt frame structure and the frame shear wall structure of Special-Shaped Column to be called Structure System with Special-shaped Column.Compared with traditional structural system, the infilled wall uniform thickness in Structure System with Special-shaped Column post limb and room, indoor do not have post rib to protrude, and can avoid room dressRepair with furniture and arrange the inconvenience bringing, beautiful and applicable, layout is flexible, in residential structure, is widely used. Structure System with Special-shaped Column can utilizeThe materials for wall of insulation, light energy conservation replaces traditional clay brick, meets the call of nation-building resource-conserving friendly environment society. ButAlong with the increase of structure level number, load strengthens, and common armored concrete (RC) Special-Shaped Column, owing to limited by the elongated uiform section of its post limb, exists axleThe problems such as pressure ratio limit value is low, bearing capacity is low, ductility is poor, poor seismic behavior, have affected it at skyscraper and compared with high seismic fortification intensity areaPromotion and application, be mainly applicable to that multilayer or small sized multiple story building and fortification intensity 7 are spent and the building in the 7 following areas of degree in.

In order to improve bearing capacity and the anti-seismic performance of Special-Shaped Column, in concrete, configure shaped steel, and be furnished with appropriate longitudinal reinforcement and stirrup, thenCast concrete forms steel reinforced concrete (SRC) Special-Shaped Column. SRC Special-Shaped Column can not only keep the outstanding advantages of RC special-shaped column structure, Er QienengIncrease substantially limit value of axial compression ratio and the bearing capacity of structure, improve ductility and the anti-seismic performance of total, be specially adapted to high-rise and high earthquake intensity groundIn the building of shake fortified defence area. Compared with steel construction, SRC Special-Shaped Column is wrapped in shaped steel in concrete, and concrete can effectively stop shaped steel to produceWarpage also prevents shaped steel corrosion, improves durability and the fire resistance of structure.

According to national sector standard " reinforced concrete composite structure technical regulation " regulation (JGJ138-2001), in steel reinforced concrete frame postShaped steel, should adopt and be full of the real abdomen shaped steel of type. But in T section Special-Shaped Column, configure real abdomen shaped steel, be parallel to the edge of a wing and web direction stirrup andThe Reinforcement of beam column node core area beam can be because of the stopping of real abdomen formula shaped steel in post, need on shaped steel, punch through or welding, construction is complicatedAnd difficulty is larger.

Summary of the invention

The above-mentioned deficiency that the object of the invention is to overcome prior art, provides the type that a kind of bearing capacity is high, ductility good, anti-seismic performance is good and simple for productionSteel concrete T section column construction method can be promoted special-shaped column structure in the building in skyscraper and high seismic fortification intensity areaApplication.

The technical solution used in the present invention is:

A kind of steel reinforced concrete T section column construction method, described steel reinforced concrete T section post is the side column in Framed Structure with Special-Shaped Columns, its spyLevy and be to comprise following step:

1) make tee bar and square steel tube;

2) in the punching across a certain distance mutually of tee bar two side wing edge steel plates, web and square steel tube four side steel pipe walls;

3) tee bar and the square steel tube of having beaten hole are transported to job site, in the each post limb of T shape post, vertical T shape are installed respectively by measurement and positioningShaped steel, installs vertical square steel tube (4) at T section post core space, and all shaped steel (1-4) all anchors to basic top, and is welded with end plate increasingAdd anchoring, avoid shaped steel to be pulled out generation fastening destruction;

4) configure the Reinforcement in outside, each tee bar edge of a wing, the Reinforcement in outside, (4) four bights of configuration square steel tube;

5) be close to the direction that Reinforcement exocuticle is parallel to respectively the T section post edge of a wing and web and configure at a certain distance stirrup (9,10);

6) stop protective layer thickness, installation form in stirrup (9,10) outside;

7) cast concrete, vibrates that to build one-shot forming be steel reinforced concrete T section post, completes construction.

Beneficial effect of the present invention is as follows:

1. the present invention has overcome that common RC Special-Shaped Column limit value of axial compression ratio is low, ductility is poor, and the technical problem that anti-seismic performance is weak, by rational layout typeSteel, has improved bearing capacity and the ductility of member, has improved the anti-seismic performance of member, makes the Special-Shaped Column can be strong at skyscraper and high earthquake protectionSpend in regional building and applied, particularly the skyscraper in the seismic fortification intensity 8 above areas of degree.

The core space of 2.T shaped column, is positioned at the position, turning in cross section, and T shape post is in the stressed complexity in this position. Compared with prior art, the present inventionAt T section post core space setting party steel pipe, can make the restrained condition of its inner concrete in three dimension stress, limit concrete transversely deforming,Improve the compression strength of T section post, ductile performance be improved significantly, make T section post there is superior anti-seismic performance.

3. the present invention can solve the inconvenience that is parallel to the edge of a wing and the colligation of web direction stirrup, is convenient to steel bar stress in the beam of beam column node core area simultaneouslyPass, avoid welding or punching, easy construction.

4. the present invention punches on tee bar and square steel tube, has increased shaped steel and concrete bonding, has effectively improved shaped steel and concrete mutualEffect, has guaranteed that concrete and shaped steel can collaborative works, jointly stressed.

Brief description of the drawings

The steel reinforced concrete T section column section schematic diagram that Fig. 1 the present invention adopts;

One of steel reinforced concrete T section post schematic three dimensional views that Fig. 2 the present invention adopts;

The steel reinforced concrete T section post schematic three dimensional views that Fig. 3 the present invention adopts.

Detailed description of the invention

Below in conjunction with accompanying drawing and example, the present invention is further described.

The present invention is for the side column in Framed Structure with Special-Shaped Columns provides a kind of steel reinforced concrete T section column construction method, comprise T section concrete column,Tee bar, square steel tube, vertical muscle, stirrup configure tee bar, square steel tube, vertical muscle and stirrup in described T shape post.

In the each post limb of T section post, configure tee bar 1,2,3, at core space configuration square steel tube 4. For reinforced steel and concrete bonding,Ensure that the two works jointly, be separated by necessarily in the symmetric position of symmetric position, web and the square steel tube four side steel pipe walls of tee bar two side wing edge steel platesSpacing punching, makes it be longitudinal arrangement. Configure respectively Reinforcement 5,6,7,8 at tee bar and square steel tube outside, and be parallel to TThe edge of a wing of shape post and web direction configure respectively closed stirrup 9,10.

Concrete construction method:

1), according to actual requirement of engineering, produce needed tee bar 1,2,3 and square steel tube 4 in specialized Gang Gou company in advance, by correspondingThe Plate Welding of specification combines;

2) for reinforced steel and concrete bonding, in symmetric position, web and the square steel tube four side steel pipe walls of tee bar two side wing edge steel platesMutually punching across a certain distance of symmetric position, make it be longitudinal arrangement, the shape in hole can be circle or polygon, concrete coarse aggregate is wanted can be lightEasily see through aperture, to ensure the density of later stage concreting;

3) shaped steel is transported to job site, by measurement and positioning, vertical tee bar 1,2,3 is installed in the each post limb of T section post respectively,At T shape post core space, vertical square steel tube 4 is installed. All shaped steel 1,2,3,4 all anchors to basic top, and is welded with end plate increase anchoring, keeps awayExempt from shaped steel and be pulled out generation fastening destruction;

4) according to existing " concrete profiled pile structure technology code " (JGJ149-2006) and " reinforced concrete composite structure technical regulation " (JGJ138-2001), configuration Reinforcement and restriction hoop. As shown in Figure 1, Figure 2 and Figure 3, join longitudinally and be subject in the outside, the edge of a wing of tee bar 1Power reinforcing bar 5, joins Reinforcement 6 in the outside, the edge of a wing of tee bar 2, joins Reinforcement 7 in the outside, the edge of a wing of tee bar 3,Reinforcement 8 is joined in the outside in 4 four bights of square steel tube, is close to the edge of a wing and web side that Reinforcement exocuticle is parallel to respectively T shape postTo configuration transverse seal stirrup 9,10, stirrup should be vertical with vertical muscle, makes the concrete of Special-Shaped Column within the scope of stressed rear stirrup in three received strength shapeState, strengthens the aggregate interlocking force between concrete and shaped steel, and cohesive force is between the two improved;

5) stop thickness of concrete cover in stirrup outside, installation form, shuttering supporting must be firm, guarantee geometry, intensity, rigidity andStability; Formwork edge joint must be tight, ensures to there will not be when concreting is vibrated spillage phenomenon; After formwork completes, again check Template LocationWhether whether size is accurate, fixing firm;

6) cast concrete, in casting process, should note vibrating time, spacing and insertion depth, and vibrator is inserted point and is quincunx evenly distributed,Adopt the order of determinant to move, the distance of shift position should be not more than 40CM, ensure not leak and shake, Bu Guozhen, ensure concrete density andDesign strength. Dismounting post mould after maintenance completes, the construction of finishing type steel concrete T section post.

Claims (1)

1. a steel reinforced concrete T section column construction method, described steel reinforced concrete T section post is the side column in Framed Structure with Special-Shaped Columns, itsBe characterised in that and comprise following step:

1) make tee bar and square steel tube;

2) in the punching across a certain distance mutually of tee bar two side wing edge steel plates, web and square steel tube four side steel pipe walls;

3) tee bar and the square steel tube of having beaten hole are transported to job site, in the each post limb of T shape post, vertical T shape are installed respectively by measurement and positioningShaped steel, installs vertical square steel tube (4) at T section post core space, and all shaped steel (1-4) all anchors to basic top, and is welded with end plate increasingAdd anchoring, avoid shaped steel to be pulled out generation fastening destruction;

4) configure the Reinforcement in outside, each tee bar edge of a wing, the Reinforcement in outside, (4) four bights of configuration square steel tube;

5) be close to the direction that Reinforcement exocuticle is parallel to respectively the T section post edge of a wing and web and configure at a certain distance stirrup (9,10);

6) stop protective layer thickness, installation form in stirrup (9,10) outside;

7) cast concrete, vibrates that to build one-shot forming be steel reinforced concrete T section post, completes construction.