CN204491389U - The prefabricated trough girder of track traffic punched-type thin-walled - Google Patents
The prefabricated trough girder of track traffic punched-type thin-walled Download PDFInfo
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- CN204491389U CN204491389U CN201520107396.XU CN201520107396U CN204491389U CN 204491389 U CN204491389 U CN 204491389U CN 201520107396 U CN201520107396 U CN 201520107396U CN 204491389 U CN204491389 U CN 204491389U
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- track traffic
- trough girder
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Abstract
The utility model discloses the prefabricated trough girder of a kind of track traffic punched-type thin-walled, beam body is made up of support baseboard, web, web top sound insulation frange plate and band stopple caoutchouc elasticity closeouts four part.Two coxostermums and sound insulation frange plate are arranged symmetrically with; Rectangle and trapezoidal (short transverse is optimized for semicircle) perforation are set in support baseboard, in web, circular perforations is set; Between beam, seam crossing arranges band stopple caoutchouc elasticity closeouts, and thickness is the half of joint gap, after having set a roof beam in place, and gap between two closeouts closely connected substantial beam.The utility model makes beam body stressed more reasonable, and span is maximum reaches 40m, preferably resolves the little problem being difficult to cross over crossing of common u-shaped beam span; Avoid the blind area of this sound insulation and noise reduction of seam between beam, effectively reduce wheel track noise and girder construction noise to the impact of surrounding environment; Successfully solve the shortcoming of position out of the station tradition box beam body view difference.
Description
Technical field
The utility model discloses the prefabricated trough girder of a kind of track traffic punched-type thin-walled.
Background technology
Be CN200810304445.3 at application number, name is called the Chinese patent application of " city track traffic U type beam ", compare with other conventional beam type, this U-shaped beam has the advantage that landscape effect is good, noise reduction is excellent, comprehensive cost performance is high, therefore comparatively widely used in the orbit traffic overhead circuit in multiple city in recent years, but this U-shaped beam also exist stressed unreasonable, difficulty of construction is large, the shortcoming of easy to crack, two beam seam crossing noise reduction differences, sometimes cannot meet the instructions for use of track traffic, have a strong impact on the large-scale promotion application of U-shaped beam.
Utility model content
The purpose of this utility model solves unreasonable, the span of existing U-shaped beam stress to be difficult to break through 30m, to be easy between the defect that ftractures and beam the inharmonic problem of horn mouth Bridge Landscape before and after poor, the overhead island station of seam soundproof effect.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
The prefabricated trough girder of track traffic punched-type thin-walled, the web comprising support baseboard and upwards extend along support baseboard both sides, is provided with the sound insulation frange plate be integrated with it, and is all reserved with perforation on described support baseboard and web at the top of described web.
Described support baseboard and epiplastron are the thin wall construction of perforation, can arrange track one-way road, two ways, arrange the requirement that gradual change baseplate width can meet horn mouth variable cross-section section out of the station by adjustment support baseboard width.
Described sound insulation frange plate is T-shaped concrete structure, and have inside and outside two flanges, wherein inward flange size is larger than the size of outward flange.Rail transit noise source mainly contains wheel-rail noise, aerodynamic noise and construct noise etc., and wherein wheel-rail noise accounting is heavy maximum.Arrange sound insulation frange plate, wheel-rail noise reflection part outwards can propagated through this path, decreases the peripherad propagation path of wheel-rail noise.
Different according to power supply mode, electric supply installation can be set on support baseboard or frange plate, and inside web the installation component of pre-buried necessity.
Arrange rectangle (short transverse the is optimized for semicircle) perforation of a high 500mm in support baseboard central authorities, both sides respectively arrange high trapezoidal (short transverse the is optimized for semicircle) perforation being faded to 300mm by 500mm, and three perforated longer change according to baseplate width; The width of base plate is larger, and the length of perforation is longer; The circular perforations of two diameter 300mm is respectively set at two coxostermums; By arranging rational perforation, while significantly not increasing beam deadweight, support baseboard thickness increases, reduce the position of neutral axis of beam, increase depth of compression zone, thus increase effective load-bearing cross section, make cross section stressed more reasonable, be more conducive to play the high feature of compression strength of concrete structure, improve the bearing capacity of beam, span can be brought up to 35 ~ 40m by traditional about 30m.
The method for prefabricating of the prefabricated trough girder of track traffic punched-type thin-walled, as follows:
Step 1: colligation trough girder reinforcing cage, at punch position, is fixed on reinforcing cage by pre-buried PVC or fine coal ash pipe; Meanwhile, lay prestress wire and bellows, other built-in fittings are fixed on relevant position.
Step 2: carry out the installation of template, fixing, adjustment, its plan-position, elevation of top, node contacts and vertical lateral stability are checked;
Step 3: reinforcing cage handling is entered mould, enter the reinforcing cage after mould in place by designing requirement, levelling, assembled end mould is also adjusted to the right place, carries out pre-tensioned prestressing steel strand tension.
Step 4: concreting, carries out maintenance; Reach stripping after a condition of putting, pre-tensioned prestressing steel strand are put.
Step 5: continue natural curing, carry out post-tensioned prestressing steel strand tension after reaching stretch-draw condition, carry out duct grouting, build sealing off and covering anchorage concrete.
In the maintenance stage, utilize the protection of built-in pipe, avoid hole week concrete and directly contact with air, the approach of simultaneously boring a hole as inner concrete and external environment exchange heat, reduce temperature difference between inside and outside concrete, thus reduce maintenance stage component generation cracking phenomena; In operational phase, built-in pipe is played a supporting role to hole week concrete, the crack that all concrete of reduce orifice produce under load action;
Utilize perforation, between beam, seam crossing arranges band stopple caoutchouc elasticity closeouts, and thickness is the half of joint gap, and after having set a roof beam in place, gap between two closeouts closely connected substantial beam, makes beam there is not the blind area of sound insulation and noise reduction.
The beneficial effects of the utility model are as follows:
Under the prerequisite not increasing the deadweight of beam body, by arranging rational elongated perforation, increase depth of compression zone, thus increase effective load-bearing cross section, make cross section stressed more reasonable, be more conducive to play the high feature of compression strength of concrete structure, maximum load capacity improves 15%, span is maximum reaches 40m, can solve the little problem being difficult to cross over crossing of common u-shaped beam span preferably.
Part wheel-rail noise can reflect with web acting in conjunction by sound insulation frange plate, reduces noise and propagates to periphery, effectively reduce noise, reduce the impact on environment.
PVC or special flyash built-in pipe are set, the effect of protection beam body can be played, effectively reduce the appearance of beam body cracking phenomena; Meanwhile, perforation effectively can reduce the girder construction vibration that train causes, and reduces girder construction noise, reaches the effect of vibration and noise reducing.
Arrange band stopple caoutchouc elasticity closeouts, the reserved perforation of shutoff, after erection completes, closeouts is gap between closely connected substantial beam between two, compensate for the shortcoming that between beam, seam crossing noise is large.
Adjustment baseplate width can meet the requirement arranging track one-way road, two ways, arranges the requirement that gradual change baseplate width can meet horn mouth variable cross-section section out of the station, successfully solves the shortcoming of position out of the station tradition box beam body view difference.
Accompanying drawing explanation
The prefabricated trough girder drawing in side sectional elevation of Fig. 1 track traffic punched-type;
Fig. 2 two beam seam connecting belt stopple caoutchouc elasticity closeouts schematic diagram;
Fig. 3 band stopple caoutchouc elasticity closeouts schematic cross section;
In figure: 1 support baseboard, 2 webs, 3 sound insulation frange plates, 4 inward flanges, 5 outward flanges, 6 rectangular through-holes, 7 trapezoidal perforation, 8 circular perforations, 9 built-in pipes, 10 elasticity closeouts.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in detail:
The web 2 that the prefabricated trough girder of this track traffic punched-type thin-walled comprises support baseboard 1 and upwards extends along support baseboard both sides, the sound insulation frange plate 3 be integrated with it is provided with at the top of described web 2, and all reserved elongated perforation on described support baseboard 1 and web 2.
Support baseboard and epiplastron are the thin wall construction of perforation, can arrange track one-way road, two ways, arrange the requirement that gradual change baseplate width can meet horn mouth variable cross-section section out of the station by adjustment support baseboard width; Sound insulation frange plate is T-shaped concrete structure, and have inward flange 4 and outward flange 5, wherein inward flange size is relatively large.Rail transit noise source mainly contains wheel-rail noise, aerodynamic noise and construct noise etc., and wherein wheel-rail noise accounting is heavy maximum.Arrange sound insulation frange plate, wheel-rail noise reflection part outwards can propagated through this path, decreases the peripherad propagation path of wheel-rail noise.
The rectangle (short transverse is optimized for semicircle) arranging a high 500mm in support baseboard central authorities bores a hole 6, both sides respectively arrange high trapezoidal (short transverse is optimized for semicircle) fading to 300mm by 500mm 7, three perforated longer of boring a hole and change according to baseplate width; The width of base plate is larger, and the length of perforation is longer; The circular perforations 8 of two diameter 300mm is respectively set at two coxostermums; By arranging rational perforation, while significantly not increasing beam deadweight, support baseboard thickness increases, reduce the position of neutral axis of beam, increase depth of compression zone, thus increase effective load-bearing cross section, make cross section stressed more reasonable, be more conducive to play the high feature of compression strength of concrete structure, improve the bearing capacity of beam, span can be brought up to 35 ~ 40m by traditional about 30m.
Rectangular through-holes 6, trapezoidal perforation 7, circular perforations 8 are realized by built-in pipe 9, and built-in pipe 9 is PVC or fine coal ash pipe, and perforation 6,7 length are different according to different beam baseplate width.Between beam, seam crossing arranges band stopple caoutchouc elasticity closeouts 10, and thickness is the half of joint gap, and after having set a roof beam in place, gap between two closeouts closely connected substantial beam, makes beam there is not the blind area of sound insulation and noise reduction.
Track one-way road, two ways can be set by adjustment support baseboard 1 width, the requirement that gradual change width support baseboard 1 can meet horn mouth variable cross-section section out of the station is set; Electric supply installation can be set on support baseboard 1 or frange plate 3 according to power supply mode difference, and inside web 2 installation component of pre-buried necessity.
The method for prefabricating of the prefabricated trough girder of above-mentioned track traffic punched-type thin-walled, as follows:
Step 1: colligation trough girder reinforcing cage, at punch position, is fixed on reinforcing cage by pre-buried PVC or fine coal ash pipe; Meanwhile, lay prestress wire and bellows, other built-in fittings are fixed on relevant position.
Step 2: carry out the installation of template, fixing, adjustment, its plan-position, elevation of top, node contacts and vertical lateral stability are checked;
Step 3: reinforcing cage handling is entered mould, enter the reinforcing cage after mould in place by designing requirement, levelling, assembled end mould is also adjusted to the right place, carries out pre-tensioned prestressing steel strand tension.
Step 4: concreting, carries out maintenance; Reach stripping after a condition of putting, pre-tensioned prestressing steel strand are put.
Step 5: continue natural curing, carry out post-tensioned prestressing steel strand tension after reaching stretch-draw condition, carry out duct grouting, build sealing off and covering anchorage concrete.
Claims (9)
1. the prefabricated trough girder of track traffic punched-type thin-walled, it is characterized in that: the web comprising support baseboard and upwards extend along support baseboard both sides, the sound insulation frange plate be integrated with it is provided with at the top of described web, and all reserved perforation on described support baseboard and web.
2. the prefabricated trough girder of track traffic punched-type thin-walled as claimed in claim 1, is characterized in that: described support baseboard and web are the thin wall construction of perforation, and can arrange track one-way road or two ways by adjustment support baseboard width.
3. the prefabricated trough girder of track traffic punched-type thin-walled as claimed in claim 1, is characterized in that: the span of described trough girder is 35 ~ 40m.
4. the prefabricated trough girder of track traffic punched-type thin-walled as claimed in claim 1, it is characterized in that: described sound insulation frange plate is T-shaped concrete structure, have inside and outside two flanges, wherein inward flange size is larger than outward flange size.
5. the prefabricated trough girder of track traffic punched-type thin-walled as claimed in claim 1, is characterized in that: different according to power supply mode, and support baseboard or sound insulation frange plate can arrange electric supply installation, and inside web pre-buried installation component.
6. the prefabricated trough girder of track traffic punched-type thin-walled as claimed in claim 1, it is characterized in that: the rectangular through-holes that a high 500mm is set in support baseboard central authorities, both sides respectively arrange a high trapezoidal perforation being faded to 300mm by 500mm, and three perforated longer change according to baseplate width; The circular perforations of two diameter 300mm is respectively set at two coxostermums.
7. the prefabricated trough girder of track traffic punched-type thin-walled as claimed in claim 6, is characterized in that: the short transverse of described rectangular through-holes and trapezoidal perforation is optimized for semicircle.
8. the prefabricated trough girder of track traffic punched-type thin-walled as claimed in claim 1, is characterized in that: when constructing, and between beam, seam crossing arranges band stopple caoutchouc elasticity closeouts.
9. the prefabricated trough girder of track traffic punched-type thin-walled as claimed in claim 8, is characterized in that: the thickness of described caoutchouc elasticity closeouts is the half of joint gap, after having set a roof beam in place, and gap between two closeouts closely connected substantial beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520107396.XU CN204491389U (en) | 2015-02-13 | 2015-02-13 | The prefabricated trough girder of track traffic punched-type thin-walled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520107396.XU CN204491389U (en) | 2015-02-13 | 2015-02-13 | The prefabricated trough girder of track traffic punched-type thin-walled |
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| Publication Number | Publication Date |
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| CN204491389U true CN204491389U (en) | 2015-07-22 |
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|---|---|---|---|
| CN201520107396.XU Expired - Fee Related CN204491389U (en) | 2015-02-13 | 2015-02-13 | The prefabricated trough girder of track traffic punched-type thin-walled |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631302A (en) * | 2015-02-13 | 2015-05-20 | 济南轨道交通集团有限公司 | Perforated thin-wall precast channel beam for rail transit and precast method of perforated thin-wall precast channel beam for rail transit |
-
2015
- 2015-02-13 CN CN201520107396.XU patent/CN204491389U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631302A (en) * | 2015-02-13 | 2015-05-20 | 济南轨道交通集团有限公司 | Perforated thin-wall precast channel beam for rail transit and precast method of perforated thin-wall precast channel beam for rail transit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20170213 |