CN104018521B - Subway twin columns overhead station steel reinforced concrete transformational structure reinforcing bar and construction method thereof - Google Patents
Subway twin columns overhead station steel reinforced concrete transformational structure reinforcing bar and construction method thereof Download PDFInfo
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- CN104018521B CN104018521B CN201410288061.2A CN201410288061A CN104018521B CN 104018521 B CN104018521 B CN 104018521B CN 201410288061 A CN201410288061 A CN 201410288061A CN 104018521 B CN104018521 B CN 104018521B
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Abstract
The present invention relates to a kind of subway twin columns overhead station steel reinforced concrete transformational structure reinforcing bar and construction method thereof.Subway overhead station limits due to road conditions, needs to arrange transformational structure, and ordinary reinforced concrete transformational structure can not provide good load-carrying properties and anti-seismic performance.The present invention includes reinforcing bar shell of column and short beam thereof, the reinforcing bar cantilever beam section of both sides and middle reinforcing bar middle girder section, short beam and reinforcing bar cantilever beam section and reinforcing bar middle girder section are fixed by reinforcing bar scab and high-strength bolt; Reinforced concrete column pars infrasegmentalis and reinforcing bar cantilever beam section end are provided with the changeover portion of variable cross-section; Reinforcing bar shell of column bean column node place is provided with post bar connecting plate and beam steel branch sleeve; The beam body of exchange pillar position is provided with holder Column border node post muscle through hole stiffening plate and holder Column border node steel frame beam section stiffener.Transformational structure constructed by reinforcing bar of the present invention, and component bending resistance, shear-carrying capacity greatly, are out of shape little, and anti-seismic performance improves, and is with a wide range of applications in subway twin columns overhead station.
Description
Technical field
the invention belongs to subway engineering technical field of structures, be specifically related to a kind of subway twin columns overhead station steel reinforced concrete transformational structure reinforcing bar and construction method thereof.
Background technology
Overhead station in subway, due to the restriction of road conditions, the entire infrastructure component built in drop shadow spread is not allowed to fall to putting on the ground, therefore, in order to not only ensure the current requirement of road but also realize the using function at station, structural system there is transformational structure AT STATION.Transformational structure solves the implementation problem at station, can realize the demand that structural system top and the bottom adopt different post net, it is few that road occupied by bottom, adopts the form that only structural column lands, the service function at guarantee station, top, still maintains the normal architectural post net of subway concourse, platform.The feature of twin columns overhead station transformational structure is, adopts twin columns single spans framework, and both sides are with comparatively large cantilever section.Because driving requires to make the Deformation control of overhead station strict, and station post net is large, load-bearing subordinate area is large, both sides crossbeam cantilever span is large, therefore common steel concrete transformational structure can not provide good load-carrying properties and anti-seismic performance, transfer structure system employing steel reinforced concrete structure preferably.
Summary of the invention
The object of this invention is to provide a kind of subway twin columns overhead station steel reinforced concrete transformational structure reinforcing bar and construction method thereof, effectively improve the bending resistance of conversion beam, shear-carrying capacity and anti-earthquake ductility.
The technical solution adopted in the present invention is:
Subway twin columns overhead station steel reinforced concrete transformational structure reinforcing bar, is characterized in that:
Comprise reinforcing bar shell of column and short beam, the reinforcing bar cantilever beam section of both sides and the reinforcing bar middle girder section of centre, all adopt H profile steel;
Reinforcing bar shell of column is two, is erected in side by side on basis; The edge of a wing of both sides, reinforcing bar shell of column top is all connected with short beam; The web of two reinforcing bar shell of columns outside short beam is separately fixed by the web of the reinforcing bar cantilever beam section of reinforcing bar scab and high-strength bolt and level, and the web of inner side short beam is fixed by the web of the reinforcing bar middle girder section of reinforcing bar scab and high-strength bolt and same level;
Reinforced concrete column pars infrasegmentalis is provided with the changeover portion of variable cross-section, and web width and flange width successively decrease all downwards;
The web width of reinforcing bar cantilever beam section is outwards successively decreased, and the flange width of end transits to 1/2 wide from overall with, is exchange pillar position above the 1/2 wide edge of a wing;
Be exchange pillar position above the edge of a wing in the middle part of reinforcing bar middle girder section.
With pre-buried shell of column column root-plate Joint in basis bottom reinforcing bar shell of column, shell of column column root-plate is fixed with the column bolt be embedded in equally in advance in basis;
Outside the web both sides of reinforcing bar shell of column suspension column and the edge of a wing and be all welded with shell of column suspension column between shell of column column root-plate and put more energy into floor.
Bottom surface, top flange below the exchange pillar of reinforcing bar cantilever beam section end is fixed with one holder Column border node post muscle through hole stiffening plate, and web both sides are all fixed with one holder Column border node steel frame beam section stiffener;
Bottom surface, top flange in the middle part of reinforcing bar middle girder section below exchange pillar is fixed with twice holder Column border node post muscle through hole stiffening plate, and web both sides are all fixed with twice holder Column border node steel frame beam section stiffener.
Be provided with post bar connecting plate outside the edge of a wing at reinforcing bar shell of column bean column node place, post bar connecting plate is made up of three pieces of risers perpendicular to the edge of a wing and the riser top level board perpendicular to the edge of a wing.
The beam steel branch sleeve of horizontally-arranged layout is interspersed with in the reinforcing bar shell of column edge of a wing above post bar connecting plate.
The web of reinforcing bar shell of column and the edge of a wing all offer column tie-bar through hole, and the edge of a wing of reinforced concrete column pars infrasegmentalis changeover portion is provided with reinforcing bar peg, reinforcing bar peg diameter 19mm, longitudinal pitch 200mm;
The upper and lower edge of a wing of reinforcing bar cantilever beam section is provided with reinforcing bar peg, reinforcing bar peg diameter 19mm, top flange longitudinal pitch 150mm, bottom flange spacing 200mm;
The top flange of reinforcing bar middle girder section is provided with reinforcing bar peg, peg diameter 19mm, longitudinal pitch 150mm.
The construction method of subway twin columns overhead station steel reinforced concrete transformational structure reinforcing bar, is characterized in that:
Realized by following steps:
Step one: the reinforcing bar shell of column of prefabricated H profile steel and short beam, reinforcing bar cantilever beam section and reinforcing bar middle girder section, be welded in both sides, reinforcing bar shell of column top by short beam;
Time prefabricated, in bean column node place prefabricated post bar connecting plate and the beam steel branch sleeve of reinforcing bar shell of column; Preformed open-cell on reinforcing bar shell of column and short beam, reinforcing bar cantilever beam section and reinforcing bar middle girder section also fixes reinforcing bar peg; Prefabricated holder Column border node steel frame beam section stiffener and holder Column border node post muscle through hole stiffening plate in reinforcing bar cantilever beam section and reinforcing bar middle girder section;
Step 2: perform basis, during construction in basis in pre-buried shell of column column root-plate and column bolt;
Step 3: lifting reinforcing bar shell of column, in basic end face, welds mutually with shell of column column root-plate, and weld shell of column suspension column and to put more energy into floor;
Step 4: lifting reinforcing bar middle girder section, settles reinforcing bar scab and high-strength bolt to be fixed between reinforcing bar middle girder section and short beam;
Step 5: lifting reinforcing bar cantilever beam section, settles reinforcing bar scab and high-strength bolt to be fixed between reinforcing bar cantilever beam section and short beam.
The present invention has the following advantages:
1, this reinforcing bar inserts in the conversion beam of transformational structure, and stiffness of structural member is improved, and distortion reduces, the rigidity of better adaptation train operation, amount of deflection requirement, improve shear-carrying capacity and the anti-earthquake ductility of holder post conversion beam simultaneously, can the post net on flexible arrangement conversion beam top, meet station service function.
2, in the support column under this reinforcing bar insertion conversion beam, the extension of reinforcing bar in post improves the anti-earthquake ductility of bean column node, reinforced frame Lateral resisting ability, and the shear behavior improving column section.
3, this reinforcing bar node factory can processing stage high, joint connection in site mode is simple, being beneficial to construction and implementing.
Accompanying drawing explanation
Fig. 1 is reinforcing bar drawing in side sectional elevation of the present invention;
Fig. 2 is reinforcing bar top view of the present invention;
Fig. 3 is reinforcing bar lateral plan of the present invention.
In figure, 1-reinforcing bar shell of column, 2-reinforcing bar cantilever beam section, 3-reinforcing bar middle girder section, 4-reinforcing bar scab and high-strength bolt, 5-post bar connecting plate, 6-beam steel branch sleeve, 7-reinforcing bar peg, 8-shell of column suspension column is put more energy into floor, 9-shell of column column root-plate, 10-column bolt, 11-holds in the palm Column border node steel frame beam section stiffener, and 12-holds in the palm Column border node post muscle through hole stiffening plate, 13-exchange pillar, 14-basis.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention will be described in detail.
The subway twin columns overhead station steel reinforced concrete transformational structure reinforcing bar that the present invention relates to, comprises reinforcing bar shell of column 1 and short beam, reinforcing bar cantilever beam section 2 and reinforcing bar middle girder section 3, all adopts H profile steel.
Reinforcing bar shell of column 1 is two, is erected on basis 14 side by side; The edge of a wing of both sides, reinforcing bar shell of column 1 top is all connected with short beam; The web of two reinforcing bar shell of columns 1 respective outside short beams is fixed with the web of the reinforcing bar cantilever beam section 2 of level by reinforcing bar scab and high-strength bolt 4, and the web of inner side short beam is fixed with the web of the reinforcing bar middle girder section 3 of same level by reinforcing bar scab and high-strength bolt 4.
Reinforcing bar shell of column 1 bottom is provided with the changeover portion of variable cross-section, and web width and flange width successively decrease all downwards.The web width of reinforcing bar cantilever beam section 2 is outwards successively decreased, and the flange width of end transits to 1/2 wide from overall with, is exchange pillar 13 position above the 1/2 wide edge of a wing.When reinforcing bar cantilever beam section 2 end arranges exchange pillar 13, the upper and lower flange width of reinforcing bar cantilever beam section 2 is reduced half, and adopts changeover portion to be connected, the reinforcing bar edge of a wing of narrowing, the reinforcing bar being beneficial to exchange pillar 13 runs through.It is exchange pillar 13 position above the edge of a wing in the middle part of reinforcing bar middle girder section 3.
With pre-buried shell of column column root-plate 9 Joint in basis 14 bottom reinforcing bar shell of column 1, shell of column column root-plate 9 is fixed with the column bolt 10 be embedded in equally in advance in basis 14.Outside the web both sides of reinforcing bar shell of column 1 suspension column and the edge of a wing and be all welded with shell of column suspension column between shell of column column root-plate 9 and put more energy into floor 8.
Bottom surface, top flange below reinforcing bar cantilever beam section 2 end exchange pillar 13 is fixed with one holder Column border node post muscle through hole stiffening plate 12, and web both sides are all fixed with one holder Column border node steel frame beam section stiffener 11, improves the shear-carrying capacity of node.Bottom surface, top flange in the middle part of reinforcing bar middle girder section 3 below exchange pillar 13 is fixed with twice holder Column border node post muscle through hole stiffening plate 12, and web both sides are all fixed with twice holder Column border node steel frame beam section stiffener 11, improves the shear-carrying capacity of node.
Be provided with post bar connecting plate 5 outside the edge of a wing at reinforcing bar shell of column 1 bean column node place, post bar connecting plate 5 is made up of, for connecting the post longitudinal reinforcement blocked by joist steel bone three pieces of risers perpendicular to the edge of a wing and the riser top level board perpendicular to the edge of a wing.The beam steel branch sleeve 6 of horizontally-arranged layout is interspersed with, for the plain bars of connecting-type steel concrete conversion beam in reinforcing bar shell of column 1 edge of a wing above post bar connecting plate 5.
The web of reinforcing bar shell of column 1 and the edge of a wing all offer column tie-bar through hole, and what ensure column tie-bar runs through connection.The edge of a wing of reinforcing bar shell of column 1 lower transition section is provided with reinforcing bar peg 7, reinforcing bar peg 7 diameter 19mm, longitudinal pitch 200mm, strengthens the power transmission between reinforcing bar and concrete material.The upper and lower edge of a wing of reinforcing bar cantilever beam section 2 is provided with reinforcing bar peg 7, reinforcing bar peg 7 diameter 19mm, top flange longitudinal pitch 150mm, bottom flange spacing 200mm, strengthens the power transmission between reinforcing bar and concrete material.The top flange of reinforcing bar middle girder section 3 is provided with reinforcing bar peg 7, peg diameter 19mm, longitudinal pitch 150mm.
The construction method of the subway twin columns overhead station steel reinforced concrete transformational structure reinforcing bar that the present invention relates to, is specifically realized by following steps:
Step one: the reinforcing bar shell of column 1 of prefabricated H profile steel and short beam, reinforcing bar cantilever beam section 2 and reinforcing bar middle girder section 3, be welded in both sides, reinforcing bar shell of column 1 top by short beam;
Time prefabricated, in bean column node place prefabricated post bar connecting plate 5 and the beam steel branch sleeve 6 of reinforcing bar shell of column 1; Preformed open-cell on reinforcing bar shell of column 1 and short beam, reinforcing bar cantilever beam section 2 and reinforcing bar middle girder section 3 also fixes reinforcing bar peg 7; Prefabricated holder Column border node steel frame beam section stiffener 11 and holder Column border node post muscle through hole stiffening plate 12 in reinforcing bar cantilever beam section 2 and reinforcing bar middle girder section 3;
Step 2: perform basis 14, during construction in basis 14 in pre-buried shell of column column root-plate 9 and column bolt 10;
Step 3: lifting reinforcing bar shell of column 1, in basic 14 end faces, welds mutually with shell of column column root-plate 9, and weld shell of column suspension column and to put more energy into floor 8;
Step 4: lifting reinforcing bar middle girder section 3, is settled reinforcing bar scab 4, and is fixed by reinforcing bar peg 7 between reinforcing bar middle girder section 3 and short beam;
Step 5: lifting reinforcing bar cantilever beam section 2, is settled reinforcing bar scab 4, and is fixed by reinforcing bar peg 7 between reinforcing bar cantilever beam section 2 and short beam.
All reinforcing bar plates and connector all complete blanking and welding in factory, and reinforcing bar plate adopts full penetration butt weld splicing, weld seam grade secondary.Junction plate, stiffener adopts the T-shaped butt weld of partial penetration to connect.Reinforcing steel bar connecting sleeve tube adopts partial penetration to be connected with corner connection composite welds.
After reinforcing bar component conveying to job site, carry out the node splicing of linkage section, node location upper and lower frange plate employing full penetration docking welding splicing, weld seam grade is one-level, and node location web adopts the double shear connection of cutting the type high-strength bolt of turning round and adding junction plate.
After the reinforcing bar shell of column 1 of reinforcing bar, reinforcing bar cantilever beam section 2 and reinforcing bar middle girder section 3 have been spliced, start the plain bars colligation of steel reinforced concrete structure, the reinforcing bar blocked by reinforcing bar node is on junction plate, employing twin fillet wolt connects, or connected by reinforcing steel bar connecting sleeve tube, need the reinforcing bar run through, pass in the through hole that factory offers in advance.In section steel beam section, beam plain bars lacing wire Site Welding is on the web of reinforcing bar H profile steel.Reinforcing bar binding completes and starts concreting after propping up vertical good post, beam forms, and concrete adopts the transport of concrete transportation tank car, and be pumped into mould, placement layer by layer, carry out continuously, poker vibrator vibrates.The concrete maximum aggregate diameter of steel reinforced concrete structure by being less than 1/3 of thickness of concrete cover outside shaped steel, and should not be greater than 25mm control.
Content of the present invention is not limited to cited by embodiment, and the conversion of those of ordinary skill in the art by reading manual of the present invention to any equivalence that technical solution of the present invention is taked, is claim of the present invention and contains.
Claims (7)
1. subway twin columns overhead station steel reinforced concrete transformational structure reinforcing bar, is characterized in that:
Comprise reinforcing bar shell of column (1) and short beam, the reinforcing bar cantilever beam section (2) of both sides and the reinforcing bar middle girder section (3) of centre, all adopt H profile steel;
Reinforcing bar shell of column (1) is two, is erected on basis (14) side by side; The edge of a wing of reinforcing bar shell of column (1) both sides, top is all connected with short beam; The web of two reinforcing bar shell of columns (1) respective outside short beams is fixed with the web of the reinforcing bar cantilever beam section (2) of level by reinforcing bar scab and high-strength bolt (4), and the web of inner side short beam is fixed with the web of the reinforcing bar middle girder section (3) of same level by reinforcing bar scab and high-strength bolt (4);
Reinforcing bar shell of column (1) bottom is provided with the changeover portion of variable cross-section, and web width and flange width successively decrease all downwards;
The web width of reinforcing bar cantilever beam section (2) is outwards successively decreased, and the flange width of end transits to 1/2 wide from overall with, is exchange pillar (13) position above the 1/2 wide edge of a wing;
Be exchange pillar (13) position above the edge of a wing at reinforcing bar middle girder section (3) middle part.
2. subway twin columns overhead station steel reinforced concrete transformational structure reinforcing bar according to claim 1, is characterized in that:
Shell of column column root-plate (9) Joint pre-buried bottom reinforcing bar shell of column (1) and in basis (14), shell of column column root-plate (9) is fixed with the column bolt (10) be embedded in equally in advance in basis (14);
Outside the web both sides of reinforcing bar shell of column (1) suspension column and the edge of a wing and be all welded with shell of column suspension column between shell of column column root-plate (9) and put more energy into floor (8).
3. subway twin columns overhead station steel reinforced concrete transformational structure reinforcing bar according to claim 2, is characterized in that:
The bottom surface, top flange of below, reinforcing bar cantilever beam section (2) end exchange pillar (13) is fixed with one holder Column border node post muscle through hole stiffening plate (12), and web both sides are all fixed with one holder Column border node steel frame beam section stiffener (11);
The bottom surface, top flange of reinforcing bar middle girder section (3) middle part exchange pillar (13) below is fixed with twice holder Column border node post muscle through hole stiffening plate (12), and web both sides are all fixed with twice holder Column border node steel frame beam section stiffener (11).
4. subway twin columns overhead station steel reinforced concrete transformational structure reinforcing bar according to claim 3, is characterized in that:
Be provided with post bar connecting plate (5) outside the edge of a wing at reinforcing bar shell of column (1) bean column node place, post bar connecting plate (5) is made up of three pieces of risers perpendicular to the edge of a wing and the riser top level board perpendicular to the edge of a wing.
5. subway twin columns overhead station steel reinforced concrete transformational structure reinforcing bar according to claim 4, is characterized in that:
The beam steel branch sleeve (6) of horizontally-arranged layout is interspersed with in reinforcing bar shell of column (1) edge of a wing of post bar connecting plate (5) top.
6. subway twin columns overhead station steel reinforced concrete transformational structure reinforcing bar according to claim 5, is characterized in that:
Web and the edge of a wing of reinforcing bar shell of column (1) all offer column tie-bar through hole, the edge of a wing of reinforcing bar shell of column (1) lower transition section are provided with reinforcing bar peg (7), reinforcing bar peg (7) diameter 19mm, longitudinal pitch 200mm;
The upper and lower edge of a wing of reinforcing bar cantilever beam section (2) is provided with reinforcing bar peg (7), reinforcing bar peg (7) diameter 19mm, top flange longitudinal pitch 150mm, bottom flange spacing 200mm;
The top flange of reinforcing bar middle girder section (3) is provided with reinforcing bar peg (7), peg diameter 19mm, longitudinal pitch 150mm.
7. the construction method of subway twin columns overhead station steel reinforced concrete transformational structure reinforcing bar, is characterized in that:
Realized by following steps:
Step one: the reinforcing bar shell of column (1) of prefabricated H profile steel and short beam, reinforcing bar cantilever beam section (2) and reinforcing bar middle girder section (3), be welded in reinforcing bar shell of column (1) both sides, top by short beam;
Time prefabricated, in bean column node place prefabricated post bar connecting plate (5) and the beam steel branch sleeve (6) of reinforcing bar shell of column (1); In reinforcing bar shell of column (1) and the upper preformed open-cell of short beam, reinforcing bar cantilever beam section (2) and reinforcing bar middle girder section (3) also fixing reinforcing bar peg (7) thereof; In reinforcing bar cantilever beam section (2) and reinforcing bar middle girder section (3) above prefabricated holder Column border node steel frame beam section stiffener (11) and holder Column border node post muscle through hole stiffening plate (12);
Step 2: perform basis (14), during construction in basis (14) in pre-buried shell of column column root-plate (9) and column bolt (10);
Step 3: lifting reinforcing bar shell of column (1), in basis (14) end face, is welded mutually with shell of column column root-plate (9), and weld shell of column suspension column and to put more energy into floor (8);
Step 4: lifting reinforcing bar middle girder section (3), settles reinforcing bar scab and high-strength bolt (4) to be fixed between reinforcing bar middle girder section (3) and short beam;
Step 5: lifting reinforcing bar cantilever beam section (2), settles reinforcing bar scab and high-strength bolt (4) to be fixed between reinforcing bar cantilever beam section (2) and short beam.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105569203B (en) * | 2015-12-21 | 2018-11-23 | 广州机施建设集团有限公司 | The optimization method of buttress node |
| CN106149979A (en) * | 2016-08-19 | 2016-11-23 | 中铁隧道勘测设计院有限公司 | A kind of underground engineering armored concrete combines y-type structure post with steel reinforced concrete |
| CN108678185A (en) * | 2018-06-04 | 2018-10-19 | 东北林业大学 | A kind of complete prefabricated detachable assembling type beam-column connection |
| CN109930437B (en) * | 2019-03-18 | 2023-12-19 | 中铁第四勘察设计院集团有限公司 | Transition system of straddle type monorail section turnout beam connection station |
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| CN2130861Y (en) * | 1992-06-09 | 1993-04-28 | 永宏安铁工厂有限公司 | Steel skeleton structure for iron frame |
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