CN103741577A - T-shaped beam bridge with lower flat connection and construction method of T-shaped beam bridge - Google Patents

T-shaped beam bridge with lower flat connection and construction method of T-shaped beam bridge Download PDF

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Publication number
CN103741577A
CN103741577A CN201310742480.4A CN201310742480A CN103741577A CN 103741577 A CN103741577 A CN 103741577A CN 201310742480 A CN201310742480 A CN 201310742480A CN 103741577 A CN103741577 A CN 103741577A
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shaped
lateral bracing
bridge
construction
water chestnut
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CN201310742480.4A
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CN103741577B (en
Inventor
李�杰
陈淮
高冰
陈代海
王艳
葛素娟
罗军
付志方
赵文龙
杨立甫
郑洋
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Zhengzhou University
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Zhengzhou University
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Abstract

The invention relates to a T-shaped beam bridge with a lower flat connection and a construction method of the T-shaped beam bridge. The T-shaped beam bridge comprises two opposite T-shaped side beams, T-shaped middle beams are continuously arranged between the two T-shaped side beams, a plurality of diaphragm plates are arranged on one side of each T-shaped side beam close to the corresponding T-shaped middle beam and on two sides of each T-shaped middle beam, each T-shaped side beam or each T-shaped middle beam is provided with a horseshoe wrapped steel plate, a plurality of rectangular lower flat connection units are arranged between adjacent T-shaped beams, each rectangular lower flat connection unit comprises lower flat connection gusset plates arranged at four top corners respectively, lower flat connection profile steels are connected between the lower flat connection gusset plates at directly facing and/or diagonal positions, two lower flat connection gusset plates are arranged on each T-shaped beam, and the lower flat connection gusset plates are arranged on the bottom face or the side face of the horseshoe wrapped steel plate between the two adjacent diaphragm plates arranged on the same T-shaped beam. The T-shaped beam bridge with the lower flat connection is convenient in construction, and the overall stress performance and durability of the assembled T-shaped beam bridge are greatly improved.

Description

A kind of T-shaped beam bridge and construction method thereof that bottom lateral bracing is set
Technical field
The invention belongs to bridge construction technical field, be specifically related to a kind of T-shaped beam bridge and construction method thereof that bottom lateral bracing is set.
Background technology
For highway prestressed concrete T beam bridge, China has worked out standard design drawing for 25m, 30m, 35m, 40m across footpath, and T-shaped beam bridge adopts in a large number in highway construction.The Huo Liang factory of TXing Liang precast yard of such bridge is prefabricated, the on-the-spot erection construction of bridge location, the cross section of T-shaped beam is frange plate-web-water chestnut form, prestressed concrete T beam adopts post stretching, along base plate and web, prestressed reinforcement is longitudinally set more, laterally connects the cast-in-place seam and the frange plate stem grafting seam that rely between T beam diaphragm between the T-shaped beam of multi-disc.Its construction method is first by prefabricated T-shaped beam hoisted in position, then the diaphragm place between adjacent T-shaped beam sets up template, concreting, welded flange plate and diaphragm are reserved steel plate, by stem grafting, stitched with the wet seam of concrete the T-shaped beam of each piece is laterally connected to become to integral body along bridge.Owing to only depending on the reserved steel plate of diaphragm and frange plate top board to be connected between adjacent T-shaped beam, poor along bridge transverse integral, integral bridge antitorque a little less than, and be prone to seaming position place along bridge crack longitudinally, cause vehicle pitching, affect normal use and the durability of bridge, when situation is serious, there will be the T-shaped beam stress of monolithic, bury hidden trouble to bridge traffic safety and structure durability.
Summary of the invention
The object of the present invention is to provide a kind of T-shaped beam bridge and construction method thereof that bottom lateral bracing is set.
Based on above-mentioned purpose, the present invention adopts following technical scheme:
A kind of T-shaped beam bridge that bottom lateral bracing is set, comprise the two T-shaped side bars that are oppositely arranged, in the middle of two T-shaped side bars, be provided with continuously T-shaped central sill, each T-shaped side bar is provided with several diaphragms by a side of T-shaped central sill, each T-shaped central sill both sides is equipped with several diaphragms, each T-shaped side bar or T-shaped central sill are equipped with water chestnut encased steel plate, between adjacent T-shaped beam, be provided with several rectangle bottom lateral bracing unit, described each rectangle bottom lateral bracing unit comprises the bottom lateral bracing gusset plate that minute is located at four drift angle places, in over against and/or two bottom lateral bracing gusset plates at diagonal position place between be connected with bottom lateral bracing shaped steel, wherein on each T-shaped beam, two bottom lateral bracing gusset plates are respectively set, bottom lateral bracing gusset plate is located on the bottom surface or side of water chestnut encased steel plate between the adjacent twice diaphragm of same T-shaped beam.
The thickness of described bottom lateral bracing gusset plate is not less than the thickness of water chestnut encased steel plate.
Described bottom lateral bracing shaped steel is angle steel, channel-section steel or i iron.
The described construction method that the T-shaped beam bridge of bottom lateral bracing is set, comprises the following steps:
(1) prefabricated reinforced concrete or prestressed concrete T beam: the water chestnut encased steel plate of making T-shaped beam, press design and construction code requirement and settle steel form, prefabricated T-shaped side bar and T-shaped central sill, water chestnut encased steel plate is connected with T-shaped beam baseplate reinforcing bar, maintenance prefabricated T-shaped beam, removes steel form except water chestnut encased steel plate (water chestnut encased steel plate when pouring into a mould as steel form);
(2) bottom lateral bracing gusset plate welding: weld bottom lateral bracing gusset plate on the bottom surface of the water chestnut encased steel plate between the adjacent twice diaphragm of same T-shaped beam or side;
(3) lift T-shaped beam: the prefabricated T-shaped beam completing is transported to bridge construction place hoisted in position;
(4) the cast-in-place seam of T-shaped beam diaphragm and the construction of frange plate stem grafting seam: the design laterally connecting according to the T-shaped beam of routine and construction requirement complete the construction of frange plate stem grafting seam, the cast-in-place seam of diaphragm;
(5) bottom lateral bracing welding or bolt: from T-shaped beam-ends position, between adjacent T-shaped beam, over against and/or two bottom lateral bracing gusset plates at diagonal position place between welding or bolt bottom lateral bracing shaped steel, finally between adjacent T-shaped beam, form several rectangle bottom lateral bracing unit, finally according to common process, complete whole bridge span structure construction.
The thickness of the water chestnut encased steel plate that step (1) is described is not less than the thickness of steel form.
While adopting technical scheme of the present invention, the water chestnut encased steel plate in step (1) longitudinally can be not elongated along T-shaped beam, and encased steel plate disconnects near diaphragm, avoids T-shaped beam overreinforced.
The present invention is by water chestnut encased steel plate is set, and this steel plate is connected with T-shaped beam baseplate reinforcing bar, and during T-shaped beam prefabricated construction, this steel plate is as steel form; T-shaped beam is built prefabricated, removes other position template, and the steel plate at water chestnut position is not removed, and welds bottom lateral bracing gusset plate in side or the bottom surface of steel plate; From T-shaped beam-ends position, between adjacent T-shaped beam, over against and/or two bottom lateral bracing gusset plates at diagonal position place between welding or bolt bottom lateral bracing shaped steel, finally between adjacent T-shaped beam, form several rectangle bottom lateral bracing unit, with this, improve the holistic resistant behavior of the T-shaped bridge of assembling, overcome existing T-shaped beam and only depend on stem grafting seam, diaphragm cast-in-situ concrete between frange plate to link the shortcoming a little less than causing the whole stress-bearing capability of the T-shaped beam bridge of assembling, effectively strengthened the whole stress-bearing capability of the T-shaped beam bridge structure of assembling; Meanwhile, the steel plate of water chestnut outer wrapping can be avoided beam base concrete cracking, improves the durability of T-shaped beam.Prefabricated and the existing T-shaped beam prefabricated construction technology of this kind of T beam is consistent, constant to equipment and technical requirements, only the prefab form at water chestnut position is simply replaced, and the steel plate of parcel can weld or bolt bottom lateral bracing easily.The T-shaped beam bridge easy construction that bottom lateral bracing is set of the present invention, to the holistic resistant behavior of the T-shaped beam bridge of assembling and the durability effect of having greatly improved.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the I-I view of Fig. 1.
Fig. 3 is Fig. 1's view.
In figure: 1 is T-shaped side bar, 2 is T-shaped central sill, and 3 is water chestnut encased steel plate, and 4 is bottom lateral bracing gusset plate, and 5 is bottom lateral bracing shaped steel, and 6 is diaphragm.
The specific embodiment
With reference to figure 1-3, the T-shaped beam bridge of single span that the present invention forms with 5 T-shaped beams describes, but the present invention is equally applicable to adopt single span or the T-shaped beam bridge of multispan of other quantity.
A kind of T-shaped beam bridge that bottom lateral bracing is set, comprise the two T-shaped side bars 1 that are oppositely arranged, in the middle of two T-shaped side bars 1, be provided with continuously T-shaped central sill 2, each T-shaped side bar 1 is provided with 5 diaphragms 6 by a side of T-shaped central sill 2, each T-shaped central sill 2 both sides is equipped with 5 diaphragms 6, each T-shaped side bar 1 or T-shaped central sill 2 are equipped with water chestnut encased steel plate 3, between adjacent T-shaped beam, be provided with several rectangle bottom lateral bracing unit, described each rectangle bottom lateral bracing unit comprises the bottom lateral bracing gusset plate 4 that minute is located at four drift angle places, in over against and/or two bottom lateral bracing gusset plates 4 at diagonal position place between be connected with bottom lateral bracing shaped steel 5, wherein on each T-shaped beam, two bottom lateral bracing gusset plates 4 are respectively set, bottom lateral bracing gusset plate 4 is located on the side of 6 water chestnut encased steel plates 3 of the adjacent twice diaphragm of same T-shaped beam.The thickness of described bottom lateral bracing gusset plate 4 is not less than the thickness of water chestnut encased steel plate 3.Described bottom lateral bracing shaped steel 4 is angle steel.
The described construction method that the T-shaped beam bridge of bottom lateral bracing is set, comprises the following steps:
(1) according to design parameterss such as bridge class, span, bridge deck widths, carry out T-shaped beam bridge structure analysis, the sectional dimension of the T-shaped beam of calculative determination, plain bars and longitudinal prestressing reinforcing bar, and according to connection request calculative determination bottom lateral bracing shaped steel 4 sizes between adjacent T-shaped beam;
(2) prefabricated reinforced concrete or prestressed concrete T beam: as built as shown in Fig. 1, make the water chestnut encased steel plate 3 of T-shaped beam, water chestnut encased steel plate 3 thickness are got 3mm, press design and construction code requirement and settle steel form, need altogether prefabricated 2 T-shaped beam 1(side bars) and 3 T-shaped beam 2(central sills); Assembling reinforcement skeleton (post-tensioned prestressed concrete beam reserving hole channel, installs bellows), welds water chestnut encased steel plate 3 and T-shaped beam 1,2 baseplate reinforcing bars by reinforcing bar or steel plate bar, notes guaranteeing that clean topping meets design requirement; Build T-shaped beam 1,2 concrete and diaphragm 6,1,2 maintenances of prefabricated T-shaped beam; As be prestressed concrete T beam 1,2, after maintenance, form removal, adopt post stretching technique to apply longitudinal prestressing reinforcing bar anchoring, remove the template except water chestnut encased steel plate 3;
(3) bottom lateral bracing gusset plate 4 welding: weld bottom lateral bracing gusset plate 4 on the bottom surface of the water chestnut encased steel plate 3 of 6 of the adjacent twice diaphragms of same T-shaped beam or side, gusset plate thickness is 4mm;
(4) the prefabricated T-shaped beam 1,2 with water chestnut encased steel plate 3 completing is transported to bridge site hoisted in position, arranges the connecting reinforcement of diaphragm 6 positions, colligation or be welded to connect reinforcing bar, sets up the wet joint template in diaphragm 6 places; Welded flange plate and diaphragm 6 pre-embedded steel slabs form horizontal stem grafting seam; The concrete of building diaphragm 6 wet seams, cast-in-situ concrete intensity is not less than beam body concrete intensity, and maintenance, form removal complete the wet seam construction of diaphragm 6;
(5) bottom lateral bracing angle steel 5 welding or bolts: from T-shaped beam 1,2 ends, between adjacent T-shaped beam, over against and/or two bottom lateral bracing gusset plates 4 at diagonal position place between welding or bolt bottom lateral bracing angle steel 5, finally between adjacent T-shaped beam, form several rectangle bottom lateral bracing unit, angle steel 5 is selected 2L50 * 4, finally according to common process, completes whole spanning construction.

Claims (5)

1. the T-shaped beam bridge that bottom lateral bracing is set, comprise the two T-shaped side bars that are oppositely arranged, in the middle of two T-shaped side bars, be provided with continuously T-shaped central sill, each T-shaped side bar is provided with several diaphragms by a side of T-shaped central sill, each T-shaped central sill both sides is equipped with several diaphragms, each T-shaped side bar or T-shaped central sill are equipped with water chestnut encased steel plate, it is characterized in that: between adjacent T-shaped beam, be provided with several rectangle bottom lateral bracing unit, described each rectangle bottom lateral bracing unit comprises the bottom lateral bracing gusset plate that minute is located at four drift angle places, in over against and/or two bottom lateral bracing gusset plates at diagonal position place between be connected with bottom lateral bracing shaped steel, wherein on each T-shaped beam, two bottom lateral bracing gusset plates are respectively set, bottom lateral bracing gusset plate is located on the bottom surface or side of water chestnut encased steel plate between the adjacent twice diaphragm of same T-shaped beam.
2. the T-shaped beam bridge that bottom lateral bracing is set according to claim 1, is characterized in that: the thickness of described bottom lateral bracing gusset plate is not less than the thickness of water chestnut encased steel plate.
3. the T-shaped beam bridge that bottom lateral bracing is set according to claim 1, is characterized in that: described bottom lateral bracing shaped steel is angle steel, channel-section steel or i iron.
4. according to the construction method of the T-shaped beam bridge that bottom lateral bracing is set described in claims 1 to 3 any one, it is characterized in that: comprise the following steps:
(1) prefabricated reinforced concrete or prestressed concrete T beam: the water chestnut encased steel plate of making T-shaped beam, press design and construction code requirement and settle steel form, prefabricated T-shaped side bar and T-shaped central sill, water chestnut encased steel plate is connected with T-shaped beam baseplate reinforcing bar, maintenance prefabricated T-shaped beam, removes the steel form except water chestnut encased steel plate;
(2) bottom lateral bracing gusset plate welding: weld bottom lateral bracing gusset plate on the bottom surface of the water chestnut encased steel plate between the adjacent twice diaphragm of same T-shaped beam or side;
(3) lift T-shaped beam: the prefabricated T-shaped beam completing is transported to bridge construction place hoisted in position;
(4) the cast-in-place seam of T-shaped beam diaphragm and the construction of frange plate stem grafting seam: the design laterally connecting according to the T-shaped beam of routine and construction requirement complete the construction of frange plate stem grafting seam, the cast-in-place seam of diaphragm;
(5) bottom lateral bracing welding or bolt: from T-shaped beam-ends position, between adjacent T-shaped beam, over against and/or two bottom lateral bracing gusset plates at diagonal position place between welding or bolt bottom lateral bracing shaped steel, finally between adjacent T-shaped beam, form several rectangle bottom lateral bracing unit, finally according to common process, complete whole bridge span structure construction.
5. a kind of construction method that the T-shaped beam bridge of bottom lateral bracing is set according to claim 4, is characterized in that: the described water chestnut encased steel plate thickness of step (1) is not less than the thickness of steel form.
CN201310742480.4A 2013-12-30 2013-12-30 A kind of T-shaped beam bridge and construction method thereof that bottom lateral bracing is set Active CN103741577B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103938556A (en) * 2014-04-29 2014-07-23 长安大学 Transverse reinforcing device of space double K-shaped supports of concrete beam bridge with T-shaped section
CN105019362A (en) * 2015-07-09 2015-11-04 中交第二航务工程局有限公司 Pier top block of precast beam constructed by stub matching method
CN106087694A (en) * 2016-08-15 2016-11-09 福州大学 Assembling steel plate beams of concrete combined bridge structure and construction method
CN106677049A (en) * 2017-01-20 2017-05-17 福州大学 Assembled steel-concrete combination structure bridge and construction method
CN109024219A (en) * 2018-07-30 2018-12-18 湖南大学 A kind of prefabricated ultra-high performance concrete-normal concrete composite beam bridge girder construction and construction method

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CN203128995U (en) * 2013-02-25 2013-08-14 同济大学 Combined T-girder component and combined T-girder bridge
CN203639799U (en) * 2013-12-30 2014-06-11 郑州大学 T-shaped beam bridge provided with lower horizontal bracings

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JPH0718624A (en) * 1993-06-21 1995-01-20 P S Co Ltd Manufacture of bridge block and t-section girder
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CN201276670Y (en) * 2008-08-15 2009-07-22 龙建路桥股份有限公司 50m T-shaped beam
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103938556A (en) * 2014-04-29 2014-07-23 长安大学 Transverse reinforcing device of space double K-shaped supports of concrete beam bridge with T-shaped section
CN105019362A (en) * 2015-07-09 2015-11-04 中交第二航务工程局有限公司 Pier top block of precast beam constructed by stub matching method
CN106087694A (en) * 2016-08-15 2016-11-09 福州大学 Assembling steel plate beams of concrete combined bridge structure and construction method
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CN106677049A (en) * 2017-01-20 2017-05-17 福州大学 Assembled steel-concrete combination structure bridge and construction method
CN106677049B (en) * 2017-01-20 2018-08-17 福州大学 Assembled steel-concrete combined structure bridge and construction method
CN109024219A (en) * 2018-07-30 2018-12-18 湖南大学 A kind of prefabricated ultra-high performance concrete-normal concrete composite beam bridge girder construction and construction method

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