CN101914952A - Connecting joint between hollow steel tube concrete column and steel girder and construction method thereof - Google Patents
Connecting joint between hollow steel tube concrete column and steel girder and construction method thereof Download PDFInfo
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- CN101914952A CN101914952A CN 201010237437 CN201010237437A CN101914952A CN 101914952 A CN101914952 A CN 101914952A CN 201010237437 CN201010237437 CN 201010237437 CN 201010237437 A CN201010237437 A CN 201010237437A CN 101914952 A CN101914952 A CN 101914952A
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Abstract
The invention discloses a connecting joint between a hollow steel tube concrete column and a steel girder and a construction method thereof. The joint comprises a hollow steel tube concrete column, a steel girder, an end plate and a high-strength bolt, wherein the end plate is welded at the steel girder end; the steel girder end at the joint is connected with the hollow steel tube concrete column through the end plate and a bolt and is connected with a column through the prestressed high-strength bolt. In the construction method, the concrete in the steel tube can be prefabricated or cast in situ; the end plate can be welded in a factory; bolt holes on the end plate and the steel tube are preformed in the factory; and only bolt connection needs on-site construction. The joint structure has the advantages of economy, practicality, definite force transmission, simple manufacture, high prefabrication degree, convenient construction, and capacities of avoiding on-site welding and improving joint shock resistance and construction benefit.
Description
Technical field
The present invention relates to a kind of building structure node, particularly relate to the connected node and the job practices thereof of a kind of hollow steel tube concrete column and girder steel.
Background technology
The hollow steel tube concrete column is a kind of fill concrete between inside and outside two-layer steel pipe and the novel steel tube concrete structure that forms is compared with the solid encased structures of tradition, and it can alleviate dead load, increases the structure bending rigidity, has a good application prospect.But also double as building penetration pipe or construction drainage pipe of the hollow section of interior steel pipe wherein.Its section form is various, can cover side, the side of being, side's cover circle, square sleeve rectangle, rectangular sleeve rectangle etc.The research of present stage to the hollow concrete filled steel tube mainly is confined to post member part, and is less to the research that node carries out, and this has limited this greatly and has had the use and the popularization of the form of structure of superior function.
At present the joint form that uses of conventional steel concrete structure mainly contains inside and outside iris type, to strengthen ring type, grappling formula and beam through etc., full welding of the many employings of these joint forms or bolt weldering mix connection, on-the-spot welding operation is quite a lot of, the butt welded seam quality relies on heavier, shearing mainly relies on the vertical junction plate that is welded on post jamb to transmit by high-strength bolt or welding, moment of flexure is mainly welded by outer annular-stiffer plate on the edge of a wing and post table or the post and is transmitted, and edge of a wing height is established dividing plate or form anchor the pulling force that moment of flexure produces is passed to core concrete in post.Earthquake to U.S. Northridge in 1994 earthquake and nineteen ninety-five Japan Kobe earthquake studies show that, adopt full welding or bolt weldering to mix the node that connects and be subjected to serious tearing and brittle fracture, also expose this class and depend on the defective that the node of weld seam connects unduly, big and weldquality is difficult to guarantee as: field Welding difficulty of construction; Welding is bigger to the steel pipe walls heat affecting, causes brittle fracture easily, influences node ductility; There is three-dimensional stress in the steel of connecting portion, can't form side direction and shrink and shearing slip, cause flange of beam groove weld place to form the high stress concentrations district; Web fabrication hole root exists very big stress to concentrate and the joint load path is transmitted unreasonable or the like.
Summary of the invention
The objective of the invention is to overcome the prior art above shortcomings, the connected node and the job practices thereof of hollow steel tube concrete column and girder steel is provided.The present invention is connected girder steel on the hollow steel tube concrete column by the end plate bolt, and in girder steel and intercolumniation transmission power and moment of flexure, avoided bearing the unfavorable situation of load by weld seam, have economical and practical, power transmission clear and definite, make simple, prefabricated degree height, easy construction, and can avoid field Welding, can improve advantages such as node anti-seismic performance and construction benefit.
Purpose of the present invention is achieved through the following technical solutions:
The connected node of hollow steel tube concrete column and girder steel, comprise hollow steel tube concrete column and girder steel, be characterized in also comprising end plate and the high-strength bolt that hollow steel tube concrete column and girder steel are connected at the node place, described end plate is welded on the girder steel end, has the bolt hole that passes for described high-strength bolt on the outer layer pipe of the end plate at described node place and hollow steel tube concrete column; Described high-strength bolt passes end plate and realizes that with the bolt hole on the hollow steel tube concrete column node is connected.
In the connected node of above-mentioned hollow steel tube concrete column and girder steel, on the outer layer pipe of the hollow steel tube concrete column at described node place and inner layer steel pipe, all have the bolt hole that passes for described high-strength bolt.
In the connected node of above-mentioned hollow steel tube concrete column and girder steel, be filled with concrete between the inside and outside two-layer steel pipe of described hollow steel tube concrete column.
In the connected node of above-mentioned hollow steel tube concrete column and girder steel, described bolt hole number is more than two.End plate, outer layer pipe and inner layer steel pipe as mentioned above, puller bolt hole thereon as required.
The job practices of the above-mentioned hollow steel tube concrete column and the connected node of girder steel comprises the steps:
(1) bolt hole is opened in the position that is used to connect the hollow steel tube concrete column on end plate, end plate is welded on the girder steel end in factory;
(2) in factory respectively with hollow steel tube concrete column skin and inner layer steel pipe welding fabrication, bolt hole is offered in the position that is connected with end plate on outer layer pipe, and sockets reinforcing bar by spot welding carry out ectonexine steel pipe location at the bottom of hollow steel tube concrete column capital and post;
(3) if need prefabricated hollow steel tube concrete column, then earlier bolt is carried out no bonding measure in factory, bolt is passed bolt hole on the steel pipe after, carry out concreting, treat after the maintenance moulding prefabricated post and girder steel to be transported to the job site, prefabricated post is lifted the place, pillar location on construction plane; If need water the hollow steel tube concrete column at the construction field (site), then step (1) and the described steel pipe of step (2) and girder steel are transported to the job site, with the pillar location place of lifting steel pipes to the construction plane, then bolt is carried out no bonding measure, after bolt passed the steel pipe preformed hole, carry out concreting and maintenance;
(4) described girder steel is lifted the post node location, high-strength bolt is passed bolt hole on the end plate, girder steel is connected with the hollow steel tube concrete column by applying the prestressed stretch-draw high-strength bolt.
In the above-mentioned job practices, bolt hole is offered in the position that is used for being connected with end plate in the step (2) on outer layer pipe and inner layer steel pipe.
Compared with prior art, advantage of the present invention and effect are:
(1) the present invention adopts the prestressed high-strength bolt to carry out the bean column node connection, mainly transmits node area moment of flexure and shearing by end plate and bolt group, has avoided welding the related damages that mixed node brings by welding node and bolt, has improved the anti-seismic performance of structure;
(2) site construction technology of the present invention is simple, and node construction only need carry out bolt splicing and prestressed stretch-draw, and site operation difficulty and workload greatly reduce, and help improving efficiency of construction, reduction of erection time and reduction cost; But also improved the application property of structure simultaneously at cold district;
(3) the present invention does not need welding diaphragm in steel pipe, and girder steel need not run through steel pipe yet, is easy to guarantee concrete pouring quality;
(4) simplicity of design of the present invention, distinct, the prefabricated degree height of power transmission, making facility are convenient to mechanization production, are easy to promote.
Description of drawings
Fig. 1 is the structural representation of the connected node of hollow steel tube concrete column of the present invention and girder steel;
Fig. 2 is the sectional side view of the connected node of hollow steel tube concrete column of the present invention and girder steel;
Fig. 3 is the flat sectional drawing of the connected node of hollow steel tube concrete column of the present invention and girder steel;
Fig. 4 a～Fig. 4 e is the job practices flow chart of the connected node of hollow steel tube concrete column of the present invention and girder steel, wherein:
Fig. 4 a is girder steel end and perforate end plate welded structure figure;
Fig. 4 b is the sectional view that outer layer pipe and inner layer steel pipe are opened welding steel tie location between bolt hole and two-layer steel pipe;
Fig. 4 c is the sectional view that node is worn does not in advance have the bonding high-strength bolt;
Fig. 4 d is the sectional view behind the intranodal concreting;
Fig. 4 e is the structure chart after end plate bolt connection hollow steel tube concrete column of the present invention and girder steel node construction finish.
Among the figure: 1 outer layer pipe, 2 inner layer steel pipes, 3 concrete, 4 girder steels, 5 end plates, 6 high-strength bolts, 7 bolts hole, 8 steel ties.
The specific embodiment
Below in conjunction with accompanying drawing concrete enforcement of the present invention is described in further details, but enforcement of the present invention and protection domain are not limited thereto.
As Fig. 1～shown in Figure 3, the connected node of hollow steel tube concrete column and girder steel, the end plate 5 and the high-strength bolt 6 that comprise hollow steel tube concrete column, girder steel 4 and hollow steel tube concrete column and girder steel are connected at the node place, described end plate 5 is welded on the end of girder steel 4, has the bolt hole 7 that passes for described high-strength bolt 6 on the outer layer pipe of the end plate at node place and hollow steel tube concrete column; Described high-strength bolt 6 passes end plate 5 and realizes that with the bolt hole 7 on the hollow steel tube concrete column node is connected.According to steel pipe size and design needs, also can on the outer layer pipe of the hollow steel tube concrete column at described node place and inner layer steel pipe, all have the bolt hole 7 that passes for described high-strength bolt.Be filled with concrete 3 between the inside and outside two-layer steel pipe of hollow steel tube concrete column.
In concrete enforcement, the hollow steel tube concrete column can cover side, the side of employing, just overlap circle, square sleeve rectangle, rectangular sleeve square equal cross-section form, can fill regular tenacity concrete or high-strength concrete and self-compacting concrete between inside and outside two-layer steel pipe.Girder steel can adopt H section steel beam or I section steel beam, and the girder steel end is welded on the end plate.
Fig. 4 a～Fig. 4 e is an example with the end plate bolt connection side side's of the overlapping hollow steel tube concrete column and the girder steel node of steel pipe in the bolt-through, and its job practices flow process is as follows:
(1) opens bolt hole 7 in end plate 5 relevant positions, end plate is welded on girder steel 4 ends at steel pipe and girder steel processing factory;
(2) in described factory respectively with hollow steel tube concrete column outer layer pipe 1 and inner layer steel pipe 2 welding fabrications, offer bolt hole 7 at steel pipe and the corresponding position of end plate as required, and in the column top and the column bottom socket reinforcing bar 8 by spot welding and carry out ectonexine steel pipe location, steel pipe dislocation when preventing concreting 3;
(3) as the prefabricated hollow steel tube concrete column of need, then bolt 6 is carried out no bonding measure in described factory, bolt 6 is passed bolt hole 7 on outer layer pipe 1 and the inner layer steel pipe 2 after, carry out concrete 3 and build.Treat after the concrete 3 maintenance moulding prefabricated post and girder steel 4 to be transported to the job site, prefabricated post is lifted the place, pillar location on construction plane;
(4), then step (1) and the described steel pipe of step (2) and girder steel 4 are transported to the job site as the cast-in-place hollow steel tube concrete column of need.With the pillar location place of lifting steel pipes to the construction plane.Then bolt 6 is carried out no bonding measure, bolt 6 is passed bolt hole 7 on outer layer pipe 1 and the inner layer steel pipe 2 after, carry out building and maintenance of concrete 3;
(5) step (3) or the described girder steel 4 of step (4) are lifted the post node location, high-strength bolt 6 is passed end plate 5, girder steel 4 is connected with the hollow steel tube concrete column by applying prestressed stretch-draw high-strength bolt 6.
As above can realize the present invention, the foregoing description adopts the prestressed high-strength bolt to carry out the bean column node connection, mainly transmit node area moment of flexure and shearing, avoided welding the related damages that mixed node brings, improved the anti-seismic performance of structure by welding node and bolt by end plate and bolt group; Node construction only need carry out bolt splicing and prestressed stretch-draw, and site operation difficulty and workload greatly reduce, and help improving efficiency of construction, reduction of erection time and reduction cost; But also improved the application property of structure simultaneously at cold district.Do not need welding diaphragm in steel pipe, girder steel need not run through steel pipe yet, is easy to guarantee concrete pouring quality.
Claims (7)
1. the connected node of hollow steel tube concrete column and girder steel, comprise hollow steel tube concrete column and girder steel, it is characterized in that also comprising end plate and the high-strength bolt that hollow steel tube concrete column and girder steel are connected at the node place, described end plate is welded on the girder steel end, has the bolt hole that passes for described high-strength bolt on the outer layer pipe of the end plate at described node place and hollow steel tube concrete column; Described high-strength bolt passes end plate and realizes that with the bolt hole on the hollow steel tube concrete column node is connected.
2. the connected node of hollow steel tube concrete column according to claim 1 and girder steel is characterized in that all having the bolt hole that passes for described high-strength bolt on the outer layer pipe of the hollow steel tube concrete column at described node place and inner layer steel pipe.
3. according to claim 1 and 2 with the bolted hollow steel tube concrete column of end plate and girder steel node, it is characterized in that being filled with concrete between the inside and outside two-layer steel pipe of described hollow steel tube concrete column.
4. the connected node of hollow steel tube concrete column according to claim 1 and girder steel is characterized in that described bolt hole number is more than two.
5. the connected node of hollow steel tube concrete column according to claim 1 and girder steel, it is characterized in that the outer layer pipe of described hollow steel tube concrete column and the form of structure composition of cover side, inner layer steel pipe employing side, side's cover circle, square sleeve rectangle or rectangular sleeve rectangle, it is the girder steel of H type or I type that described girder steel adopts cross section.
6. the job practices of the connected node of described hollow steel tube concrete column of claim 1 and girder steel is characterized in that comprising the steps:
(1) bolt hole is opened in the position that is used to connect the hollow steel tube concrete column on end plate, end plate is welded on the girder steel end in the processing factory of hollow steel tube and girder steel;
(2) locate respectively with hollow steel tube concrete column skin and inner layer steel pipe welding fabrication in described factory, bolt hole is offered in the position that is connected with end plate on outer layer pipe, and sockets reinforcing bar by spot welding carry out ectonexine steel pipe location at the bottom of hollow steel tube concrete column capital and post;
(3) if need prefabricated hollow steel tube concrete column, then earlier bolt is carried out no bonding measure at described factory place, after bolt passed bolt hole on the steel pipe, carry out concreting, treat after the maintenance moulding prefabricated post and girder steel to be transported to the job site, prefabricated post is lifted the place, pillar location on construction plane; If need water the hollow steel tube concrete column at the construction field (site), then step (1) and the described steel pipe of step (2) and girder steel are transported to the job site, with the pillar location place of lifting steel pipes to the construction plane, then bolt is carried out no bonding measure, after bolt passed the steel pipe preformed hole, carry out concreting and maintenance;
(4) described girder steel is lifted the post node location, high-strength bolt is passed bolt hole on the end plate, girder steel is connected with the hollow steel tube concrete column by applying the prestressed stretch-draw high-strength bolt.
7. job practices according to claim 6 is characterized in that in the step (2) that the position that is used for being connected with end plate offers bolt hole on outer layer pipe and inner layer steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010237437 CN101914952A (en) | 2010-07-23 | 2010-07-23 | Connecting joint between hollow steel tube concrete column and steel girder and construction method thereof |
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| CN 201010237437 CN101914952A (en) | 2010-07-23 | 2010-07-23 | Connecting joint between hollow steel tube concrete column and steel girder and construction method thereof |
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| CN 201010237437 Pending CN101914952A (en) | 2010-07-23 | 2010-07-23 | Connecting joint between hollow steel tube concrete column and steel girder and construction method thereof |
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Application publication date: 20101215 |