CN101798856B - Steel-concrete combined beam and construction method thereof - Google Patents

Steel-concrete combined beam and construction method thereof Download PDF

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Publication number
CN101798856B
CN101798856B CN2010101402193A CN201010140219A CN101798856B CN 101798856 B CN101798856 B CN 101798856B CN 2010101402193 A CN2010101402193 A CN 2010101402193A CN 201010140219 A CN201010140219 A CN 201010140219A CN 101798856 B CN101798856 B CN 101798856B
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CN
China
Prior art keywords
steel
concrete
connection
built
composite
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CN2010101402193A
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Chinese (zh)
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CN101798856A (en
Inventor
黄靓
易楚军
鲁懿虬
吴志维
肖岩
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湖南大学
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Abstract

The invention discloses a steel-concrete combined beam, comprising a reinforced concrete part for resisting pressure and a steel component part for resisting pulling force, wherein the reinforced concrete part is a reverse U-shaped section; reinforced bars extend out a certain distance from two ends of the beam for connection; and the steel component part is positioned on the bottom of the combined beam, and forms a whole with the reinforced concrete part through weld joint connection or bolt connection. The combined beam can improve the seismic resistance of the structure, increase the structure ductility, and accelerate the construction progress, thus being a steel-reinforced concrete combined beam with relatively lower engineering cost and convenient construction.

Description

A kind of steel-concrete composite beam and job practices thereof
Technical field
The present invention is mainly concerned with a kind of building structural element and job practices thereof, refers in particular to a kind of steel-concrete composite beam and job practices thereof.
Background technology
Reinforced concrete structure has advantages such as the convenience of drawing materials, good economy performance, construction technology be skillful, and is very extensive in the application of China.But because its deadweight is bigger, effect of inertia is big, and anti-seismic performance is not good.Longer because of its construction period again, be unfavorable for developer's capital turnover.And the labour who needs labor at present reinforced concrete structure; The industrial structure of China is just changed to technology-intensive type by labor-intensive; Labour's pay level is increasingly high, if also adopt this construction pattern of present stage, the developer need drop into more cost.Steel work also is that China uses more a kind of form of structure.It has lightweight, high-strength, characteristics that ductility is good, and speed of application is fast, and anti-seismic performance is good.But the construction of steel work needs the labor fund.
Monolithic reinforced concrete structure needs to influence time of setting the duration because of concrete; But existing structure still adopts monolithic reinforced concrete structure without prefabricated units; Only all do not have to connect reliably because of the most existing prefabricated units; Be unfavorable for antidetonation, in order to satisfy the more cost of shockproof requirements needs input.
Consider that from material property the concrete anti-pressure ability is very strong, and the phenomenon of unstability can not appear in steel when receiving tension, steel concrete has utilized these characteristics exactly.Steel reinforced concrete, concrete filled steel tube also are applied in some structures in addition, and they all have good performance.But its shortcoming is to conduct oneself with dignity greatlyyer, and expending of steel is also few.
Summary of the invention
The technical problem that the present invention will solve just is: be directed against the problem that structural performance, speed of application, construction cost can not be taken into account well in the prior art; The invention provides a kind of cost lower, design and produce simple and convenient, difficulty of construction is little, speed of application is fast, can be used in the steel-concrete composite beam of multiple form of structure.
In order to address the above problem; The solution that the present invention proposes is: a kind of steel-concrete composite beam, comprise steel concrete part (2) and steel member part (3), and steel concrete part (2) is the inverted U cross section; Reinforcing bar (4) stretches out certain distance and is used for connecting at the two ends of beam; Steel member part (3) is positioned at the bottom, and steel member part (3) is steel plate or girder steel, connects with concrete part (2) through weld seam connection or bolt to form a whole; When steel member part (3) and concrete part (2) adopted weld seam to be connected, concrete part (2) bottom was provided with built-in connection (6); When steel member part (3) and concrete part (2) adopted bolt to be connected, concrete base was provided with pre embedded bolt (5), and built-in connection has a plurality of in same beam; Its distribution is discontinuous, and its kind is divided into two big types, and one type is not connect between the built-in connection; Another kind of is to connect with weld seam through the elongated reinforcing bar (12) that connects built-in connection between the built-in connection, and pre embedded bolt (5) has a plurality of in same beam, and its distribution is discontinuous; Its kind is divided into two big types, and one type is not connect between the pre embedded bolt, and another kind of is to weld with weld seam through the elongated reinforcing bar (13) that connects pre-embedded bolt between the pre embedded bolt; Make the inverted U mould earlier, put into reinforcing bar mould and it is fixed, concreting is made into U shaped steel reinforced concrete member in mould then; And in concrete built-in connection or screw rod; At last the steel member is welded on the built-in connection or the steel member is put screw rod and also use nut screwing clamping, form steel-concrete composite beam, when steel-concrete composite beam is connected with pilaster or body of wall; Said compound beam is placed on pilaster or the body of wall; The reinforcing bar (4) that beam and beam stretch out with himself two ends is connected, and leaves a fixed gap between beam and the beam, and in the space, pours into stone concrete (8); Steel-concrete composite beam and cast-in-situ reinforced concrete column (1) are when being connected; Said compound beam is put into template when the cast-in-situ steel reinforced concrete formwork; The reinforcing bar that beam and beam stretch out with himself two ends is connected, and leaves a fixed gap between beam and the beam, in template, waters the bar pouring concrete again; Steel-concrete composite beam and precast plate (10) directly ride over the steel-concrete composite beam end face with precast plate when being connected, and a segment distance is stayed at precast plate (10) two ends, builds stone concrete (8); Steel-concrete composite beam and cast-in-situ reinforced concrete slab (11) be when being connected, and said compound beam is as the part of template, and exceed the certain distance of template, in template, inserts the bar pouring concrete again.
Being produced in the precast yard of steel-concrete composite beam accomplished; But production different specifications; The cross-sectional sizes and the quantity of reinforcement of its steel concrete part are confirmed by designing and calculating; Reinforcing bar confirms according to the anchorage length that structure requires that in the extension elongation at beam two ends the material and the cross-sectional sizes of steel member part are confirmed by designing and calculating.
A kind of manufacturing approach of steel-concrete composite beam is characterized in that manufacturing step is: 1. utilize existing or make new groove-shaped mold; 2. utilize groove-shaped mold to make the flute profile reinforced concrete member, and in concrete built-in connection or screw rod; 3. the steel member is welded on the built-in connection or with the steel member and puts screw rod and use nut screwing clamping, the formation steel-concrete composite beam
When steel-concrete composite beam was connected with body of wall 9, said compound beam was placed on the body of wall 9, and the reinforcing bar that beam and beam stretch out with himself two ends is connected, and leaves a fixed gap between beam and the beam, and in the space, pours into stone concrete 8; When steel-concrete composite beam is connected with cast-in-situ reinforced concrete column 1; Said compound beam is put into template when the cast-in-situ steel reinforced concrete formwork; The reinforcing bar that beam and beam stretch out with himself two ends is connected, leaves a fixed gap between beam and the beam, more slotting bar pouring concrete in template; When steel-concrete composite beam is connected with precast plate 10, precast plate is directly ridden over the steel-concrete composite beam end face, a segment distance is stayed at precast plate 10 two ends, builds stone concrete 8; When steel-concrete composite beam was connected with cast-in-situ reinforced concrete slab 11, said compound beam was as the part of template, and exceeded the certain distance of template, in template, inserted the bar pouring concrete again.
Compared with prior art, the present invention has taken into account structural performance, speed of application and construction cost, and can well be connected with the existing structure form, also can expand and develop into new form of structure, and its advantage is:
(1) part of the concrete in the steel-concrete composite beam of the present invention hollows out processing on the basis of rectangular cross section beam, makes the weight of beam significantly alleviate, and has good seismic resistance; Thin steel member partly is used to bear pulling force, the problem of unstability can not occur; Reinforcing bar through two ends between beam and the beam connects, and irritates real with concrete again, and its globality is as many as monolithic reinforced concrete structure;
(2) this compound beam has significantly reduction than steel work and steel reinforced concrete structure on steel using amount, can save great amount of cost;
(3) this compound beam completes in precast yard, and is die needed simple, makes flow process and understands;
(4) this compound beam can well be connected with multiple structure, and work progress is simple, need not formwork, and speed of application is fast;
(5) this compound beam adopts the assembling construction, and required manpower is few, can reduce the emolument expense, and can be the technology-intensive type construction and accumulate experience.
Description of drawings
Fig. 1 is a kind of schematic cross-section of steel-concrete composite beam, and wherein the steel member is connected through bolt with concrete, does not directly connect between the bolt;
Fig. 2 is a kind of schematic cross-section of steel-concrete composite beam, and wherein the steel member is connected through bolt with concrete, and same bolt on vertically connects through an elongated reinforcing bar;
Fig. 3 is a kind of schematic cross-section of steel-concrete composite beam, and wherein the steel member is connected through weld seam with concrete, does not connect between the bolt;
Fig. 4 is a kind of schematic cross-section of steel-concrete composite beam, and wherein the steel member is connected through weld seam with concrete, and same bolt on vertically connects through an elongated reinforcing bar;
Fig. 5 is the node sketch map that steel-concrete composite beam is connected with pilaster or body of wall;
Fig. 6 is the node sketch map that steel-concrete composite beam is connected with cast-in-situ reinforced concrete column;
Fig. 7 is the connected node sketch map of steel-concrete composite beam and precast plate;
Fig. 8 is the connected node sketch map of steel-concrete composite beam and cast-in-place plate;
Fig. 9 is the schematic perspective view of steel-concrete composite beam.
Marginal data:
1, cast-in-situ concrete post 2, steel concrete part
3, steel member part 4, reinforcing bar
5, pre embedded bolt 6, built-in connection
7, weld seam 8, stone concrete
9, body of wall 10, precast plate
11, the elongated reinforcing bar of cast-in-situ floor 12, connection built-in connection
13, the elongated reinforcing bar that connects pre-embedded bolt.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is explained further details.
Embodiment 1:
With reference to Fig. 2, a kind of steel-concrete composite beam, it mainly comprises the steel member part 3 that is used for measuring body steel concrete part 2 and is used for tension, the steel member partly adopts steel plate.Steel concrete part 2 is inverted U-shaped cross section, and steel plate part and steel concrete part 2 are connected through bolt.The elongated reinforcing bar 13 that connects pre-embedded bolt is set between the screw rod to link to each other.
Embodiment 2:
A kind of job practices of steel-concrete composite beam: make the inverted U mould earlier; Put into reinforcing bar mould and it is fixed; Concreting is made into U shaped steel reinforced concrete member in mould then; And pre embedded bolt 5 is set in concrete, and at last steel plate is welded on the built-in connection or steel plate is put screw rod and also use nut screwing clamping, form steel-concrete composite beam.Steel-concrete composite beam is connected (Fig. 5) with body of wall, said compound beam is placed on the wall body of wall, and the reinforcing bar that beam and beam stretch out with himself two ends is connected, and leaves a fixed gap between beam and the beam, and in the space, pours into stone concrete 8.

Claims (4)

1. steel-concrete composite beam; It is characterized in that: comprise steel concrete part (2) and steel member part (3); Steel concrete part (2) is the inverted U cross section, and reinforcing bar (4) stretches out certain distance and is used for connecting at the two ends of beam, and steel member part (3) is positioned at the bottom; Steel member part (3) is steel plate or girder steel; Connect or bolt connects with concrete part (2) and forms a whole through weld seam, when steel member part (3) and concrete part (2) adopted weld seam to be connected, concrete partly was provided with built-in connection (6) bottom (2); When steel member part (3) and concrete part (2) adopted bolt to be connected, concrete base was provided with pre embedded bolt (5).
2. a kind of steel-concrete composite beam according to claim 1; It is characterized in that: built-in connection has a plurality of in same beam; Its distribution is discontinuous; Its kind is divided into two big types, and one type is not connect between the built-in connection, and another kind of is to connect with weld seam through the elongated reinforcing bar (12) that connects built-in connection between the built-in connection.
3. a kind of steel-concrete composite beam according to claim 1; It is characterized in that: pre embedded bolt (5) has a plurality of in same beam; Its distribution is discontinuous; Its kind is divided into two big types, and one type is not connect between the pre embedded bolt, and another kind of is to weld with weld seam through the elongated reinforcing bar (13) that connects pre-embedded bolt between the pre embedded bolt.
4. the job practices of a steel-concrete composite beam is characterized in that: make the inverted U mould earlier, put into reinforcing bar mould and it is fixed; Concreting is made into U shaped steel reinforced concrete member in mould then, and in concrete built-in connection or screw rod, at last the steel member is welded on the built-in connection or the steel member is put screw rod and uses nut screwing clamping; Form steel-concrete composite beam; When steel-concrete composite beam was connected with pilaster or body of wall, said compound beam was placed on pilaster or the body of wall, and the reinforcing bar (4) that beam and beam stretch out with himself two ends is connected; Leave a fixed gap between beam and the beam, and in the space, pour into stone concrete (8); Steel-concrete composite beam and cast-in-situ reinforced concrete column (1) are when being connected; Said compound beam is put into template when the cast-in-situ steel reinforced concrete formwork; The reinforcing bar that beam and beam stretch out with himself two ends is connected, and leaves a fixed gap between beam and the beam, in template, waters the bar pouring concrete again; Steel-concrete composite beam and precast plate (10) directly ride over the steel-concrete composite beam end face with precast plate when being connected, and a segment distance is stayed at precast plate (10) two ends, builds stone concrete (8); Steel-concrete composite beam and cast-in-situ reinforced concrete slab (11) be when being connected, and said compound beam is as the part of template, and exceed the certain distance of template, in template, inserts the bar pouring concrete again.
CN2010101402193A 2010-04-07 2010-04-07 Steel-concrete combined beam and construction method thereof CN101798856B (en)

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CN105908898A (en) * 2016-06-15 2016-08-31 东南大学 Bionic composite beam/plate structure and construction method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1715586A (en) * 2004-06-14 2006-01-04 东洋综合建业株式会社 Prestress mixed beam with concrete plate and corrugate steel web beam
CN101139812A (en) * 2007-10-19 2008-03-12 清华大学 Lower edge open truss style corrugated steel web combination beam

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Publication number Priority date Publication date Assignee Title
KR100747661B1 (en) * 2005-12-07 2007-08-08 (주)엠씨에스공법 Mold-concrete composite Crossbeam and construction method using the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1715586A (en) * 2004-06-14 2006-01-04 东洋综合建业株式会社 Prestress mixed beam with concrete plate and corrugate steel web beam
CN101139812A (en) * 2007-10-19 2008-03-12 清华大学 Lower edge open truss style corrugated steel web combination beam

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