CN204849562U - Little box girder bridge roof beam - Google Patents
Little box girder bridge roof beam Download PDFInfo
- Publication number
- CN204849562U CN204849562U CN201520568798.XU CN201520568798U CN204849562U CN 204849562 U CN204849562 U CN 204849562U CN 201520568798 U CN201520568798 U CN 201520568798U CN 204849562 U CN204849562 U CN 204849562U
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- box girder
- small box
- bridge
- girder bridge
- roof beam
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 22
- 238000000034 method Methods 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 230000001174 ascending effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000005303 weighing Methods 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model is suitable for a bridge structures engineering field provides a little box girder bridge roof beam, including at least two the horizontal little case roof beams that link to each other, be provided with the ascending recess of opening direction on the junction of the flange plate of two arbitrary transverse connection's little case roof beam. Through setting up the recess two little case roof beam junctions, place in the recess as the steel sheet of the die block of cast -in -place wet seam or concrete slab also or combined material panel, can effectually prevent water clock and the production of weighing down the thing, reduce and has stopped the potential safety hazard of construction period to the underbridge even, guaranteed the safety of electrochemical railway, road or the construction of structures top, the seam that wets in the recess, wet seam can be connected with the prefabricated plate after pouring and taking shape, have improved the flexural rigidity of wet seam crossing greatly, and the while has also strengthened the horizontal wholeness of bridge to a certain extent, on -the -spot little case roof beam transverse connection construction work process continuity is high, has improved construction quality, the very big blockade control time that has shortened railway, highway.
Description
Technical field
The utility model belongs to bridge construction engineering field, particularly relates to a kind of small box girder bridge.
Background technology
Case beam is the girder construction of a kind of similar boxed-section shape in bridge engineering, small box girder due to its bridge construction globality better, also relatively strong on the convenience of erection, bridge most form adopting split type combination small box girder when crossing over existing railway, highway of current medium and small span.
Electric railway line, the operation of small box girder bridge construction is done when such as building the constructions such as wet seam above road or structure, concrete slurry may be had, aggregate is under even template associated components etc. falls to bridge, if encounter contact net or vehicle, lead to great driving accident, security risk is huge, therefore the operation of small box girder bridge construction all needs to do safeguard procedures, protection method of the prior art is generally sets up protecting canopy frame, set up defences in frame upper berth again above electric railway high-voltage breakdown insulating slab (all-insulated plate) isolation, all material all wants Fire Hazard Area, pay special attention to continuous print current when construction can not flow on railroad high voltage wire.This kind of protection method is unobstructed above electric railway, road, and under there is the condition setting up frame basis both sides, adopts physically-isolated mode to solve the problem falling thing above electrochemical line.But this kind of protection method also has certain limitation, particularly above electric railway, such as when wet seam is built on top, cannot complete 100% problem of accomplishing isolated top dropping; There is works wired top again or both, and the clear distance of railway electrification line and works cannot meet the requirement of setting up frame, and the method for frame physical isolation now just cannot be leaned on to have dealt with problems.
In addition, small box girder bridge construction scheme must through railway, the relevant departments such as road carry out review, evaluation is by rear, must to railway, road agency application is blocked, control time point is implemented, and to railway, it is limited with each duration of power off time that point is blocked in the application of road relevant departments, only have every day can carry out line operates very short a period of time, be pressed for time, cause limited efficacy, time prior art medium and small box girder construction bridge floor lateral connection (wet seam), the time of meeting at substantial carries out reinforcing bar binding, welding, vertical film, build, the work such as maintenance, required on-line operation overlong time, cause the duration than non-railway, road elongates nearly ten times even tens times across place, overall work progress is caused to follow up.
Utility model content
The object of the utility model embodiment is to provide a kind of small box girder bridge, to solve the problem of prior art.
The utility model embodiment is achieved in that a kind of small box girder bridge, and described bridge comprises the small box girder that at least two transverse directions are connected, and the junction of the frange plate 1 of the small box girder of any two lateral connection is provided with opening direction groove upwards.
The beneficial effect of a kind of small box girder bridge that the utility model provides comprises:
A kind of small box girder bridge that the utility model embodiment provides, by arranging groove two small box girder junctions, the steel plate of the bed die being used as cast-in-place wet seam is placed in groove, effectively can prevent the generation of water clock and pendant thing, reduce and even stopped construction period to the potential safety hazard under bridge, ensure that the safety of constructing above electrified railway, road or structure.
Wet seam is carried out in groove, directly be bed die with precast plate and precast plate one side upward plucking before placement because upper lateral connects, can be connected with precast plate after wet seam builds shaping, improve the bending rigidity of wet seam crossing significantly, also enhance the globality of bridge lateral simultaneously to a certain extent.
On-the-spot small box girder lateral connection construction working process continuity is high, improve construction quality, highly shortened bridge down train influence time, the time that essence need interrupt railway operation or highway road traffic at least can reduce half, drastically increase the service efficiency of railway and road, also greatly reduce conveyance loss expense simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the embodiment of the enclosed construction of the small box girder of two lateral connection in a kind of small box girder bridge that Fig. 1 provides for the utility model;
Fig. 2 is part A partial enlarged drawing in Fig. 1;
In figure, 1 is frange plate, and 2 is precast plate, and 3 is layer of concrete, and 4 is C50 waterproof concrete layer, and 5 is filler.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
In order to technical scheme described in the utility model is described, be described below by specific embodiment.
Be illustrated in figure 1 the structural representation of the embodiment of the enclosed construction of the small box girder of two lateral connection in a kind of small box girder bridge that the utility model provides, be illustrated in figure 2 part A partial enlarged drawing in Fig. 1 that the utility model provides, from Fig. 1 and Fig. 2, in this enclosed construction:
The width of groove and the degree of depth can adjust according to the practical structures of small box girder and operation environment, and the scope of width can be 300-1000mm, and the scope of the degree of depth can be 15-25mm.The cross section of groove can be trapezoidal, U-shaped or rectangle.In the embodiment that Fig. 1 and Fig. 2 provides, the width of groove is 400mm, and the degree of depth is 20mm, and cross section is rectangle.
Further, the bottom surface of this groove being placed with the precast plate 2 that size and groove size match, as the bed die of cast-in-place wet seam, inside grooves precast plate 2 is layer of concrete 3.
Precast plate 2 can be steel plate, concrete slab or composite board, and the body that this composite board edge can be fixed on beam body bracket has comparatively large rigidity, and fixing Hou Ban center is indeformable.The thickness of precast plate 2 and layer of concrete 3 sets flexibly according to site environment, and when precast plate 2 is steel plate, thickness range can be 0.5-3cm; During for concrete slab, thickness range can be 4-10cm; During for composite board, thickness range can be respectively 2cm and 18cm in the embodiment that provides of 2-18cm, Fig. 1 and Fig. 2.
Preferably, before building wet seam this steel plate and frange plate 1 seam crossing gap in be filled with airtight filler 5.This filler 5 can be half flexible long-acting filler, such as epoxy resin or elastic body (TST) etc.Can prevent concrete slurries from dropping to bridge from gap, and have certain link effect.
Further, after carrying out wet seam in groove, the layer of concrete 3 that wet seam is formed and two small box girder be equipped with C50 waterproof concrete layer 4 above, the thickness of this C50 waterproof concrete layer 4 sets according to on-site actual situations, scope can be 10cm in the embodiment that provides of 8-20cm, Fig. 1 and Fig. 2.
A kind of bridge that the present embodiment provides, any two transverse directions be connected the junction of small box girder be provided with groove, the precast plate of the bed die being used as cast-in-place wet seam is placed in groove, effectively can prevent the generation of water clock and pendant thing, reduce and even stopped construction period to the potential safety hazard under bridge, ensure that the safety of constructing above electrified railway, road or structure.
Wet seam is carried out in groove, directly be bed die with precast plate and precast plate one side upward plucking before placement because upper lateral connects, can be connected with precast plate after wet seam builds shaping, improve the bending rigidity of wet seam crossing significantly, also enhance the globality of bridge lateral simultaneously to a certain extent.
On-the-spot small box girder lateral connection construction working process continuity is high, improve construction quality, highly shortened bridge down train influence time, the time that essence need interrupt railway operation or highway road traffic at least can reduce half, drastically increase the service efficiency of railway and road, also greatly reduce conveyance loss expense simultaneously.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. a small box girder bridge, is characterized in that, described bridge comprises the small box girder that at least two transverse directions are connected, and the junction of the frange plate (1) of the small box girder of any two lateral connection is provided with opening direction groove upwards.
2. small box girder bridge as claimed in claim 1, is characterized in that, the cross section of described groove is trapezoidal, U-shaped or rectangle;
The scope of the width of described groove is 300-500mm, and the scope of the degree of depth is 15-25mm.
3. small box girder bridge as claimed in claim 1, is characterized in that, the bottom surface of described groove is placed with the precast plate (2) that size and described groove size match.
4. small box girder bridge as claimed in claim 3, is characterized in that, described precast plate (2) is steel plate, concrete slab or composite material; During for steel plate, thickness range is 0.5-3cm; During for concrete slab, thickness range is 4-10cm; During for composite board, thickness range is 2-18cm.
5. bridge as claimed in claim 3, is characterized in that, is filled with airtight filler (5) in described precast plate (2) and the gap of the seam crossing of described frange plate (1).
6. small box girder bridge as claimed in claim 5, it is characterized in that, described filler (5) is half flexible long-acting filler, comprises epoxy resin and elastic body.
7. small box girder bridge as claimed in claim 1, is characterized in that, the upper layer of concrete (3) for wet seam formation of precast plate (2) described in described concave part.
8. small box girder bridge as claimed in claim 7, is characterized in that, is equipped with C50 waterproof concrete layer (4) above the described layer of concrete (3) that wet seam is formed and two described small box girder;
The scope of the thickness of described C50 waterproof concrete layer (4) is 8-20cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520568798.XU CN204849562U (en) | 2015-07-31 | 2015-07-31 | Little box girder bridge roof beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520568798.XU CN204849562U (en) | 2015-07-31 | 2015-07-31 | Little box girder bridge roof beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204849562U true CN204849562U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520568798.XU Active CN204849562U (en) | 2015-07-31 | 2015-07-31 | Little box girder bridge roof beam |
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| CN (1) | CN204849562U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155399A (en) * | 2015-07-31 | 2015-12-16 | 中铁第四勘察设计院集团有限公司 | Small box girder bridge and building method thereof |
| CN106835931A (en) * | 2017-02-20 | 2017-06-13 | 孙英 | A kind of small box girder bridge |
| CN107916625A (en) * | 2017-12-25 | 2018-04-17 | 山西省交通规划勘察设计院 | A kind of widening structure and its method of width cantilever boxgirder |
| CN110983940A (en) * | 2019-11-25 | 2020-04-10 | 清华大学 | A kind of precast concrete box girder bridge and its construction method |
-
2015
- 2015-07-31 CN CN201520568798.XU patent/CN204849562U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155399A (en) * | 2015-07-31 | 2015-12-16 | 中铁第四勘察设计院集团有限公司 | Small box girder bridge and building method thereof |
| CN106835931A (en) * | 2017-02-20 | 2017-06-13 | 孙英 | A kind of small box girder bridge |
| CN107916625A (en) * | 2017-12-25 | 2018-04-17 | 山西省交通规划勘察设计院 | A kind of widening structure and its method of width cantilever boxgirder |
| CN110983940A (en) * | 2019-11-25 | 2020-04-10 | 清华大学 | A kind of precast concrete box girder bridge and its construction method |
| CN110983940B (en) * | 2019-11-25 | 2024-04-12 | 清华大学 | Precast concrete box girder bridge and construction method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |