CN102864741A - Light structural steel and concrete combined bridge floor structure - Google Patents
Light structural steel and concrete combined bridge floor structure Download PDFInfo
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- CN102864741A CN102864741A CN2012103990428A CN201210399042A CN102864741A CN 102864741 A CN102864741 A CN 102864741A CN 2012103990428 A CN2012103990428 A CN 2012103990428A CN 201210399042 A CN201210399042 A CN 201210399042A CN 102864741 A CN102864741 A CN 102864741A
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- girt strip
- close girt
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- bridge deck
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Abstract
The invention discloses a light structural steel and concrete combined bridge floor structure which comprises a lower force bearing structure and a combined plate distributed on the lower force bearing structure. The lower force bearing structure is a light structural steel structure, and the combined plate comprises a profiled steel sheet distributed on the light structural steel structure and a concrete surface layer paved on the profiled steel sheet. The light structural steel structure comprises a plurality of dense rib beams distributed parallelly, two adjacent dense rib beams are fixedly connected through a plurality of transverse supporting parts, and the dense rib beams are cold-bending thin-wall structural steel. Dense rib beams are connected with the profiled steel sheet through a plurality of first connection parts, the profiled steel sheet is a plate rib, and the direction of the plate rib and the dense rib beams are connected in an orthogonality mode. The light structural steel and concrete combined bridge floor structure is simple in structure, reasonable in design, simple in construction process, short in construction period, good in using effect, light in self weight, excellent in mechanical property, high in force bearing, large in rigidness, and capable of reducing deformation under the effect of crowd load and improving spanning capability and comfortableness of bridges.
Description
Technical field
The invention belongs to the bridge construction field of engineering technology, especially relate to a kind of lightweight section and Combined concrete formula bridge deck structure.
Background technology
For a long time, China's city pedestrian overpass and Landscape Bridge, what usually all adopt is reinforced concrete bridge deck plate or steel bridge deck.Wherein, the reinforced concrete bridge deck plate is most widely used, and its design, construction technology are all relatively comparatively ripe.But, because the deadweight of reinforced concrete bridge deck plate is larger, thereby has limited the span ability of bridge, and seem more thick and heavy, affect attractive in appearance.Simultaneously, the long construction period of cast-in-situ concrete bridge deck, complex procedures, and construction quality is difficult to guarantee.Though steel bridge deck has alleviated the bridge floor deadweight, and construction technology is simple, but under pedestrian load's effect, the comfort of bridge deck is relatively poor, vibration and sound easily occur, thereby affects the normal usage function of steel bridge deck.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of lightweight section and Combined concrete formula bridge deck structure are provided, it is simple in structure, reasonable in design, construction technology is simple and short construction period, result of use are good, it is superior from heavy and light and mechanical property, bearing capacity is high, rigidity is large, can reduce the distortion under pedestrian load's effect of lightweight section and Combined concrete formula bridge deck structure, has strengthened span ability and the comfort level of bridge.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of lightweight section and Combined concrete formula bridge deck structure, it is characterized in that: comprise bottom load-carrying construction and the compoboard that is laid on the load-carrying construction of described bottom, described bottom load-carrying construction is light section steel structure, and described compoboard comprises the profiled sheet that is laid on the described light section steel structure and the concrete pavement of mating formation on described profiled sheet, and described bottom load-carrying construction is laid on the spandrel girder of institute's construction bridges; Described light section steel structure comprises that multiple tracks is the close girt strip of parallel laying, and the described close girt strip of multiple tracks is laid on the same plane, and is fixed connection by the multiple tracks horizontal support piece between the described close girt strip of adjacent twice, and described close girt strip is light gauge cold-formed steel shape; All be fixed by a plurality of connectors one between every together described close girt strip and the described profiled sheet and be connected; Described profiled sheet is rib of slab and its rib of slab direction and the orthogonal thereto laying of described close girt strip.
Above-mentioned a kind of lightweight section and Combined concrete formula bridge deck structure, it is characterized in that: pad is equipped with shearing-resistant member between described connector one and the described profiled sheet, and shearing-resistant member is light gauge cold-formed steel shape, and the middle part of described shearing-resistant member has the installing hole of installing for described connector one.
Above-mentioned a kind of lightweight section and Combined concrete formula bridge deck structure is characterized in that: the identical length of the described close girt strip of multiple tracks is same, and the described close girt strip of multiple tracks all is the direction across bridge laying.
Above-mentioned a kind of lightweight section and Combined concrete formula bridge deck structure is characterized in that: described close girt strip is C type light gauge cold-formed steel shape, is the box steel beam of box-shaped or is I-shaped i section steel beam by the cross section that two C type light gauge cold-formed steel shapes are assemblied to form back-to-back by the cross section that is assemblied to form behind two C type light gauge cold-formed steel shape make-ups; Described shearing-resistant member is C type light gauge cold-formed steel shape.
Above-mentioned a kind of lightweight section and Combined concrete formula bridge deck structure is characterized in that: be fixed by vertical connector between described close girt strip and the horizontal support piece and be connected, and described horizontal support piece is light gauge cold-formed steel shape with vertical connector.
Above-mentioned a kind of lightweight section and Combined concrete formula bridge deck structure is characterized in that: the web height of described close girt strip is 250mm～300mm, and the spacing between the described close girt strip of adjacent twice is 400mm～600mm; The rib height of described rib of slab is 30mm～75mm, and the pitch of waves of described rib of slab is 100mm～300mm; Spacing between the end face of described concrete pavement and the described rib of slab end face is 50mm～100mm.
Above-mentioned a kind of lightweight section and Combined concrete formula bridge deck structure is characterized in that: the described close girt strip of multiple tracks all is laid on the same level, and the length of described close girt strip is not more than 5m; The wall thickness of described close girt strip, horizontal support piece, vertical connector and shearing-resistant member is 1.09mm～2.5mm, and the thickness of slab of described profiled sheet is 0.75mm～1.6mm; The strength grade of concrete of described concrete pavement is C20～C40.
Above-mentioned a kind of lightweight section and Combined concrete formula bridge deck structure is characterized in that: the cross sectional shape of described horizontal support piece is C shape, and the cross sectional shape of described vertical connector is L shaped or C shape; The web of described vertical connector is fixed on the web of horizontal support piece by a plurality of connectors two, and a side wing edge of described vertical connector is fixed on the web of close girt strip by a plurality of connectors three.
Above-mentioned a kind of lightweight section and Combined concrete formula bridge deck structure is characterized in that: described connector one, described connector two and described connector three are tapping screw or plain bolt.
Above-mentioned a kind of lightweight section and Combined concrete formula bridge deck structure is characterized in that: a plurality of described connectors one are laid along the edge of a wing center line of close girt strip, and a plurality of described connector one is even laying; Described connector one is laid in the ripple trough place of described rib of slab.
The present invention compared with prior art has the following advantages:
1, simple in structure, reasonable in design and processing and fabricating and easy construction, the light section steel structure that adopts comprise that multiple tracks is the close girt strip of parallel laying, and close girt strip adopts light gauge cold-formed steel shape; Covering adopts the compoboard that is comprised of concrete pavement and profiled sheet, passes through self-drilling connection between profiled sheet and the close girt strip.
2, the profiled sheet pitch of waves that adopts is little, and connector one is laid intensive, thereby the combined effect between light section steel structure and the profiled sheet is good.Simultaneously, the compoboard that is formed by concrete pavement and profiled sheet not only can improve whole bridge floor along close girt strip and along profiled sheet rib direction horizontal rigidity planar, and with close girt strip combination after can also effectively improve the out-of-plane whole bending rigidity of bridge floor.
3, mechanical property is superior, and bearing capacity is high, rigidity is large.
4, dead load is light, making, transportation and easy for installation, and short construction period, artificial and machinery expenses is low.
5, the member factory normalization is produced, steady quality, and the members such as the light section steel structure that adopts and profiled sheet all can carry out standardized production in factory, and finish in advance on the ground to lift after the assembly unit again and install to spandrel girder, and efficiency of construction increases substantially.
6, all adopt tapping screw to connect between the light section steel structure that adopts and the profiled sheet, but not welding is easy to connect, reliable, have simultaneously detachable, recyclable and reuse, the advantage such as environmental protection.
7, the shearing-resistant member that adopts can effectively strengthen the adhesive property between concrete pavement and the profiled sheet, and prevents that effectively concrete pavement and profiled sheet from starting, peeling.Specifically at the trough place of the close girt strip edge of a wing supporting profiled sheet shearing-resistant member is set, thereby makes concrete pavement, shearing-resistant member and profiled sheet be bonded to integral body.In addition, for preventing the close girt strip unstability that twists, at its span centre or three branch places horizontal support piece is set.
8, result of use is good and comfort level is high, and the compoboard that adopts becomes integral body to come jointly stressed, compatible deformation with close girt strip by self-drilling connection, is applicable to pedestrian overpass and Landscape Bridge.
In sum, the present invention is simple in structure, reasonable in design, construction technology is simple and short construction period, result of use are good, it is superior from heavy and light and mechanical property, bearing capacity is high, rigidity is large, can reduce the distortion under pedestrian load's effect of lightweight section and Combined concrete formula bridge deck structure, strengthen span ability and the comfort level of bridge.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is structural representation of the present invention.
Description of reference numerals:
1-close girt strip; 2-horizontal support piece; 3-vertical connector;
4-profiled sheet; 5-shearing-resistant member; 6-concrete pavement;
7-tapping screw.
The specific embodiment
As shown in Figure 1, the present invention includes bottom load-carrying construction and the compoboard that is laid on the load-carrying construction of described bottom, described bottom load-carrying construction is light section steel structure, and described compoboard comprises the profiled sheet 4 that is laid on the described light section steel structure and the concrete pavement 6 of mating formation on described profiled sheet 4, and described bottom load-carrying construction is laid on the spandrel girder of institute's construction bridges.Described light section steel structure comprises that multiple tracks is the close girt strip 1 of parallel laying, and the described close girt strip 1 of multiple tracks is laid on the same plane, and is fixed connection by multiple tracks horizontal support piece 2 between the described close girt strip 1 of adjacent twice, and described close girt strip 1 is light gauge cold-formed steel shape.All be fixed by a plurality of connectors one between every together described close girt strip 1 and the described profiled sheet 4 and be connected.Described profiled sheet 4 is rib of slab and its rib of slab direction and the 1 orthogonal thereto laying of described close girt strip.
During practice of construction, the cross sectional shape of described rib of slab is corrugated, the rib of slab direction of described rib of slab (being its ripple lines) and described close girt strip 1 orthogonal thereto laying that is to say the angle α between the ripple center line of described rib of slab and the web center line of close girt strip 1=90 °.The described horizontal support piece 2 of multiple tracks is parallel laying.
In the present embodiment, pad is equipped with shearing-resistant member 5 between described connector one and the described profiled sheet 4.Described shearing-resistant member 5 is light gauge cold-formed steel shape, and the middle part of shearing-resistant member 5 has the installing hole of installing for described connector one.
In the present embodiment, described shearing-resistant member 5 is C type light gauge cold-formed steel shape.
During practice of construction, the specification of the described close girt strip 1 of multiple tracks is all identical, and described close girt strip 1 is for C type light gauge cold-formed steel shape, be the box steel beam of box-shaped or be I-shaped i section steel beam by the cross section that two C type light gauge cold-formed steel shapes are assemblied to form back-to-back by the cross section that is assemblied to form behind two C type light gauge cold-formed steel shape make-ups.
In the present embodiment, described close girt strip 1 is C type light gauge cold-formed steel shape.
In the present embodiment, the identical length of the described close girt strip 1 of multiple tracks is same, and the described close girt strip 1 of multiple tracks all is the direction across bridge laying.
During practice of construction, the described close girt strip 1 of multiple tracks is even laying.
During actual the laying, the described close girt strip 1 of multiple tracks all is laid on the same level, and the length of described close girt strip 1 is not more than 5m.And the length of described close girt strip 1 is not more than the transverse width of described profiled sheet 4.
In the present embodiment, the identical length of the described close girt strip 1 of multiple tracks is same, and the length of described close girt strip 1 is 3m～5m.The length of described close girt strip 1 is identical with the transverse width of described profiled sheet 4, and the two all the transverse width with the institute construction bridges is identical.
Be fixed by vertical connector 3 between described close girt strip 1 and the horizontal support piece 2 and be connected, and described horizontal support piece 2 is light gauge cold-formed steel shape with vertical connector 3.
In the present embodiment, described horizontal support piece 2 is vertical laying with vertical connector 3, and vertical connector 3 is parallel laying with close girt strip 1.Described vertical connector 3 is fixed on the web outside of close girt strip 1 by a plurality of connectors three, and is fixed by a plurality of connectors two between vertical connector 3 and the horizontal support piece 2 and is connected.
During practice of construction, the cross sectional shape of described horizontal support piece 2 is C shape, and the cross sectional shape of described vertical connector 3 is L shaped or C shape; The web of described vertical connector 3 is fixed on the web of horizontal support piece 2 by a plurality of connectors two, and a side wing edge of described vertical connector 3 is fixed on the web of close girt strip 1 by a plurality of connectors three.
In the present embodiment, the cross sectional shape of described horizontal support piece 2 is C shape, and namely horizontal support piece 2 is C type light gauge cold-formed steel shape; The cross sectional shape of described vertical connector 3 is C shape, and namely vertical connector 3 is C type light gauge cold-formed steel shape.
During practice of construction, described connector one, described connector two and described connector three are tapping screw 7 or plain bolt.
In the present embodiment, described connector one, described connector two and described connector three be preferred tapping screw 7 all.When adopting 7 pairs of members of tapping screw to connect, need not to carry out in advance punching, adopt the electronic screw gun of posittive clutch formula just can hammer into.
In addition, described connector one, described connector two and described connector three also can adopt plain bolt, but when adopting plain bolt, all offer be used to the bolt mounting holes that described plain bolt is installed at close girt strip 1, horizontal support piece 2, vertical connector 3, profiled sheet 4 and shearing-resistant member 5 in advance.
During actual the laying, a plurality of described connectors one are laid along the edge of a wing center line of close girt strip 1, and a plurality of described connector one is even laying; Described connector one is laid in the ripple trough place of described rib of slab.
The quantity of described connector one is identical with the ripple trough quantity of described profiled sheet 4, and a plurality of described connector one is even laying.
In the practice of construction process, the length that close girt strip 1 is exposed in described connector one bottom is not less than 3D, and wherein D is the thread pitch on the described connector one.
In the present embodiment, described connector one, described connector two and described connector three are the tapping screw that specification is ST4.2.
In addition, after described connector two and three installations of described connector, the termination protruded length of described connector two and described connector three all is not less than 3D.
In the present embodiment, the web height of described close girt strip 1 is 250mm～300mm, and the spacing between the described close girt strip 1 of adjacent twice is 400mm～600mm; The rib height of described rib of slab is 30mm～75mm, and the pitch of waves of described rib of slab (being the ripple wavelength of described rib of slab) is 100mm～300mm.
In the present embodiment, the wall thickness of described close girt strip 1, horizontal support piece 2, vertical connector 3 and shearing-resistant member 5 is 1.09mm～2.5mm, and the thickness of slab of described profiled sheet 4 is 0.75mm～1.6mm.
During actual processing and fabricating, can according to concrete needs, described close girt strip 1, horizontal support piece 2, vertical connector 3 and the wall thickness of shearing-resistant member 5 and the thickness of slab of described profiled sheet 4 be adjusted accordingly.
In the present embodiment, the strength grade of concrete of described concrete pavement 6 is C20～C40; Spacing between the end face of described concrete pavement 6 and the described rib of slab end face is 50mm～100mm.
In the practice of construction process, first according to beam body spacing and the bridge deck width of institute's construction bridges spandrel girder, determine cross section specification, length and the arrangement pitch of close girt strip 1; Afterwards, for guaranteeing the lateral stability of close girt strip 1, laying a plurality of horizontal support piece 2(between the close girt strip 1 of adjacent twice specifically lays at span centre or the three branch places of close girt strip 1), described vertical connector 3 edges of a wing and web respectively with the web of close girt strip 1 and the web of horizontal support piece 2, adopt tapping screw 7 to connect, after to be connected the finishing, then finish the assembly unit process of described light section steel structure.After described light section steel structure assembly unit is finished, cover one deck profiled sheet 4, the rib of slab direction of profiled sheet 4 and close girt strip 1 quadrature arrangement on the top (the specifically top flange of close girt strip 1) of close girt strip 1 again; Described shearing-resistant member 5 is arranged in the ripple trough place of profiled sheet 4, and the spacing between adjacent two described shearing-resistant members 5 is identical with the pitch of waves of described profiled sheet 4; Then, adopt tapping screw 7 to connect shearing-resistant member 5, profiled sheet 4 and the girt strip 1 of being connected, then finish the installation process of described profiled sheet 4, after profiled sheet 4 is finished, then obtain the steel splicing structure, just can deposit, transport and install.During practice of construction, adopt hanging device that the steel splicing structure is lifted to spandrel girder, and after on-site hoisting is in place, requires concreting and obtain concrete pavement 6 according to the deck paving design thickness again, through the maintenance certain hour, finally finish the making of whole bridge floor.
The above; it only is preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, every any simple modification, change and equivalent structure of above embodiment being done according to the technology of the present invention essence changes, and all still belongs in the protection domain of technical solution of the present invention.
Claims (10)
1. a lightweight section and Combined concrete formula bridge deck structure, it is characterized in that: comprise bottom load-carrying construction and the compoboard that is laid on the load-carrying construction of described bottom, described bottom load-carrying construction is light section steel structure, and described compoboard comprises the profiled sheet (4) that is laid on the described light section steel structure and the concrete pavement (6) on described profiled sheet (4) of mating formation, and described bottom load-carrying construction is laid on the spandrel girder of institute's construction bridges; Described light section steel structure comprises that multiple tracks is the close girt strip (1) of parallel laying, the described close girt strip of multiple tracks (1) is laid on the same plane, and be fixed connection by multiple tracks horizontal support piece (2) between the described close girt strips of adjacent twice (1), described close girt strip (1) is light gauge cold-formed steel shape; All be fixed by a plurality of connectors one between every together described close girt strip (1) and the described profiled sheet (4) and be connected; Described profiled sheet (4) is rib of slab and its rib of slab direction and the orthogonal thereto laying of described close girt strip (1).
2. according to a kind of lightweight section claimed in claim 1 and Combined concrete formula bridge deck structure, it is characterized in that: pad is equipped with shearing-resistant member (5) between described connector one and the described profiled sheet (4), and shearing-resistant member (5) is light gauge cold-formed steel shape, and the middle part of described shearing-resistant member (5) has the installing hole of installing for described connector one.
3. according to claim 1 or 2 described a kind of lightweight sections and Combined concrete formula bridge deck structure, it is characterized in that: the identical length of the described close girt strip of multiple tracks (1) is same, and the described close girt strip of multiple tracks (1) all is the direction across bridge laying.
4. according to a kind of lightweight section claimed in claim 2 and Combined concrete formula bridge deck structure, it is characterized in that: described close girt strip (1) is for C type light gauge cold-formed steel shape, be the box steel beam of box-shaped or be I-shaped i section steel beam by the cross section that two C type light gauge cold-formed steel shapes are assemblied to form back-to-back by the cross section that is assemblied to form behind two C type light gauge cold-formed steel shape make-ups; Described shearing-resistant member (5) is C type light gauge cold-formed steel shape.
5. according to claim 1 or 2 described a kind of lightweight sections and Combined concrete formula bridge deck structure, it is characterized in that: be fixed by vertical connector (3) between described close girt strip (1) and the horizontal support piece (2) and be connected, and described horizontal support piece (2) is light gauge cold-formed steel shape with vertical connector (3).
6. according to claim 1 or 2 described a kind of lightweight sections and Combined concrete formula bridge deck structure, it is characterized in that: the web height of described close girt strip (1) is 250mm～300mm, and the spacing between the described close girt strips of adjacent twice (1) is 400mm～600mm; The rib height of described rib of slab is 30mm～75mm, and the pitch of waves of described rib of slab is 100mm～300mm; Spacing between the end face of described concrete pavement (6) and the described rib of slab end face is 50mm～100mm.
7. according to a kind of lightweight section claimed in claim 5 and Combined concrete formula bridge deck structure, it is characterized in that: the described close girt strip of multiple tracks (1) all is laid on the same level, and the length of described close girt strip (1) is not more than 5m; The wall thickness of described close girt strip (1), horizontal support piece (2), vertical connector (3) and shearing-resistant member (5) is 1.09mm～2.5mm, and the thickness of slab of described profiled sheet (4) is 0.75mm～1.6mm; The strength grade of concrete of described concrete pavement (6) is C20～C40.
8. according to a kind of lightweight section claimed in claim 5 and Combined concrete formula bridge deck structure, it is characterized in that: the cross sectional shape of described horizontal support piece (2) is C shape, and the cross sectional shape of described vertical connector (3) is L shaped or C shape; The web of described vertical connector (3) is fixed on the web of horizontal support piece (2) by a plurality of connectors two, and a side wing edge of described vertical connector (3) is fixed on the web of close girt strip (1) by a plurality of connectors three.
9. according to a kind of lightweight section claimed in claim 8 and Combined concrete formula bridge deck structure, it is characterized in that: described connector one, described connector two and described connector three are tapping screw (7) or plain bolt.
10. according to claim 1 or 2 described a kind of lightweight sections and Combined concrete formula bridge deck structure, it is characterized in that: a plurality of described connectors one are laid along the edge of a wing center line of close girt strip (1), and a plurality of described connector one is even laying; Described connector one is laid in the ripple trough place of described rib of slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210399042.8A CN102864741B (en) | 2012-10-19 | 2012-10-19 | Light structural steel and concrete combined bridge floor structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210399042.8A CN102864741B (en) | 2012-10-19 | 2012-10-19 | Light structural steel and concrete combined bridge floor structure |
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| CN102864741A true CN102864741A (en) | 2013-01-09 |
| CN102864741B CN102864741B (en) | 2014-07-02 |
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| CN113605207A (en) * | 2021-08-11 | 2021-11-05 | 长安大学 | Corrugated steel web plate combined box girder, suspension splicing nondestructive positioning device and construction method |
| CN116219865A (en) * | 2023-05-08 | 2023-06-06 | 北京建工土木工程有限公司 | Assembled corrugated steel web-steel pipe composite beam and cantilever assembly construction method thereof |
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| CN113605207A (en) * | 2021-08-11 | 2021-11-05 | 长安大学 | Corrugated steel web plate combined box girder, suspension splicing nondestructive positioning device and construction method |
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| CN102864741B (en) | 2014-07-02 |
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