CN202830759U - Non-dismantling template applied to inner side of anti-collision guardrail concrete-base - Google Patents
Non-dismantling template applied to inner side of anti-collision guardrail concrete-base Download PDFInfo
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- CN202830759U CN202830759U CN 201220575332 CN201220575332U CN202830759U CN 202830759 U CN202830759 U CN 202830759U CN 201220575332 CN201220575332 CN 201220575332 CN 201220575332 U CN201220575332 U CN 201220575332U CN 202830759 U CN202830759 U CN 202830759U
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Abstract
The utility model discloses a non-dismantling template applied to the inner side of an anti-collision guardrail concrete-base, which comprises a prefabricated sheet, and the prefabricated sheet is made of high-performance cement-based materials. The prefabricated sheet is applied to the inner side of the guardrail concrete-base, and combined with the guardrail concrete-base which is subjected to consolidation forming after the guardrail base is subjected to concrete placing. The thickness of the prefabricated sheet is 2.5-3.0 cm, the height of the prefabricated sheet is same as that of the anti-collision guardrail base, and the length of the prefabricated sheet is 200-300 cm. The non-dismantling template disclosed by the utility model can ensure the anti-deicing salt erosion resistance of the guardrail base, and can accelerate the construction speed of the guardrail base, and the prefabricated sheet is replaced easily during the operation period.
Description
Technical field
The utility model relates to a kind of free removal template for anticollision barrier concrete bed inboard.
Background technology
In order to improve the crashproof ability of anticollision barrier, usually in the steel guard rail bottom concrete bed is set, the height of base does not wait from 20 ~ 60cm.The inboard concrete of guardrail base often be subject to the driving a vehicle rainwater that splashes and the erosion that contains the snow-broth of deicer salts, under the deicer salts corrosion function, through one or several winters, the guardrail base concrete will occur that the top layer slurry comes off even the phenomenon of loose concrete.These breakoff phenomenons reflect that all guardrail base is concrete second-rate, and the ability that especially anti-deicer salts is destroyed is lower.Guardrail base cast-in-situ concrete is as the round-off work of bridge engineering, and is short and structure section is little because of its design service life, concrete preparation, build, maintenance etc. often can not get paying attention to, and causes the guardrail base concrete to have mass defect.
In order to guarantee the effective force of anticollision barrier base and beam body, the guardrail base concrete adopts cast in place process more, and steel form is as the guardrail base inner side template, and prefabricated hanging block is as outboard template.The guardrail total length is to be four times in bridge length, and for some long-span bridge, guardrail base reaches dozens or even hundreds of kilometer.To within the short as far as possible time, finish the guardrail base concrete, or increase template number, otherwise in advance form removal, increasing template number and will certainly increase the engineering input, construction enterprises are unwilling to bear; Although in advance form removal can improve the template turn-around speed, accelerating construction progress, concrete quality will be affected, and the operations such as the dismounting of template, polishing, installation still account for the larger time.If form removal is too early, the guardrail base concrete tends to occur early stage dehydration cracking, the phenomenons such as local arrisdefect; If the template polishing is not careful, concrete surface quality is just poor; If install too fastly, the piece imprecision just the problems such as spillage, faulting of slab ends occur easily.
The utility model content
Task of the present utility model is to solve uses steel form to build the defective that anticollision barrier concrete bed technical approach exists in the prior art, provide a kind of for the inboard free removal template of anticollision barrier concrete bed.
Its technical solution is:
A kind ofly comprise prefabricated plate for the inboard free removal template of anticollision barrier concrete bed, prefabricated plate adopts high performance cement-based material to make.
It is inboard that above-mentioned prefabricated plate is used for the guardrail concrete bed, and the guardrail concrete bed with coagulation forming after guardrail base concreting combines.
The thickness of above-mentioned prefabricated plate is 2.5～3.0cm, and height is identical with the anticollision barrier base, and length is 200～300cm.
A kind of above-mentioned application process for the inboard free removal template of anticollision barrier concrete bed comprises the early-stage preparations step and builds step; Above-mentioned early-stage preparations step comprises: prepare some prefabricated plates and some guardrail link plates, prefabricated plate wherein adopts high performance cement-based material to make, with the inner side template of prefabricated plate as the guardrail concrete bed, carry out spacing with square wood strip and anchor bolt in a side of prefabricated plate, carry out spacing with the cushion block of colligation on the guardrail base reinforcing bar at the opposite side of prefabricated plate, reserving a section at square wood strip near the bottom of prefabricated plate one side is square breach, place an aerated capsule in the breach, utilize the space between aerated capsule sealing back and the prefabricated plate, mortar leakage prevention, utilize the back-pressure nut at anchor bolt top and around the rope chain of guardrail base square wood strip is carried out spacingly, and make square wood strip, aerated capsule and prefabricated plate keep close contact; After above-mentioned early-stage preparations step is finished, begin to build step, carry out at the scene the guardrail base pouring concrete, build and after maintenance finished, prefabricated plate and guardrail base concrete combined.
Comprise following concrete steps in the above-mentioned early-stage preparations step:
Step 2, at beam flange plate anchor bolt is set, leave between anchor bolt and the prefabricated plate be used to the gap of laying square wood strip, square wood strip is placed between anchor bolt and the prefabricated plate, square wood strip contacts with beam flange plate, prefabricated plate simultaneously, places aerated capsule in the breach of square wood strip;
Step 3 is connected to an end of above-mentioned rope chain on the back-pressure nut, and the other end is connected on the hook, and the bottom by hook catches on the guardrail link plate arranges the regulating sleeve that can regulate rope chain relaxation degree in the stage casing of rope chain; At the top of prefabricated plate and guardrail link plate an isodiametric round steel pipe is set respectively, between two round steel pipe transverse support bar is set, above-mentioned rope chain is walked around round steel pipe.
The utility model uses the prefabricated plate made by high performance cement-based material as the inner side template of anticollision barrier concrete bed, is used for improving the ability that the inboard opposing of anticollision barrier base deicer salts is destroyed, and accelerates the construction speed of guardrail base.With the inner side limiting-position of square wood strip and anchor bolt realization prefabricated plate, realize the spacing of opposite side with the cushion block of colligation on the guardrail base reinforcing bar; Reserve the space (breach) of a square cross-section at square wood strip near a side of prefabricated plate, a built-in aerated capsule utilizes the space between aerated capsule sealing back and the prefabricated plate, avoids spillage.Utilize the rope chain of the back-pressure nut at anchor bolt top and ring guardrail base to realize the spacing of square wood strip and guaranteed the close contact of square wood strip, aerated capsule and prefabricated plate.Rope chain one end of ring guardrail base connects the back-pressure nut, the other end connects the link plate bottom in the guardrail base outside, middle regulating sleeve with length adjustable links to each other, prefabricated plate and guardrail link plate top arrange respectively an isodiametric round steel pipe, and the transverse support bar of some is set between two round steel pipe.Realize the relaxation of rope chain by the length of adjusting regulating sleeve, thereby realize the Horizontal limiting at prefabricated plate top.When prefabricated plate part or overall durability occur and destroys, can change the full wafer thin plate and keep the guardrail base main body and do not change, can significantly reduce maintenance workload and maintenance cost.
Above-mentioned prefabricated plate adopts high performance cement-based material moulding in precasting yard, maintenance, can make it possess high strength, high tenacity, high resistance deicer salts erosiveness fully by preferred material, proportioning and precasting process; In addition, select present commercially available high performance cement-based material just can realize above-mentioned purpose.The inboard thickness of protection tier of anticollision barrier base is generally 4cm; the thickness of prefabricated plate can be set to 2.5 ~ 3.0cm, and every 200cm supposes the high 60cm of guardrail base as a sections; then the weight of every prefabricated plate is about 70kg ~ 85kg, and two workmans can realize its carrying and install.
Can save the operations such as form removable, polishing with above-mentioned prefabricated plate as the guardrail base inner side template, shorten on-site construction time, the more important thing is that the surface part of guardrail base possesses good military service performance, can save the expense of anticorrosive coating.When durability damage appears in prefabricated plate part or integral body, can only change thin plate and keep the guardrail base main body and not change, can save a large amount of maintenance costs.
The utlity model has following useful technique effect:
The utility model principle is clear and definite, and is simple to operate, can guarantee the ability that guardrail base opposing deicer salts corrodes, can accelerate the guardrail base speed of application, prefabricated plate is changed easily during the operation, can save a large amount of maintenances and replacement cost, in general, technology and remarkable in economical benefits.
Description of drawings
Below in conjunction with accompanying drawing and the specific embodiment the utility model is illustrated further:
Figure is the structural principle schematic diagram that is used for a kind of embodiment of application process of the inboard free removal template of anticollision barrier concrete bed.
Among the figure: 1. beam flange plate, 2. prefabricated plate, 3. guardrail link plate, 4. reinforcing bar, 5. anchor bolt, 6. back-pressure nut in the base, 7. square wood strip, 8. aerated capsule, 9. cushion block, 10. rope chain, 11. round steel pipe, 12. regulating sleeves, 13. sleeve handles, 14. transverse support bar, 15. hooks.
The specific embodiment
A kind ofly comprise prefabricated plate for the inboard free removal template of anticollision barrier concrete bed, prefabricated plate adopts high performance cement-based material to make.It is inboard that above-mentioned prefabricated plate is used for the guardrail concrete bed, and the guardrail concrete bed with coagulation forming after guardrail base concreting combines.The thickness of above-mentioned prefabricated plate is 2.5～3.0cm, and height is identical with the anticollision barrier base, and length is 200～300cm; Preferred length is 200cm.
Referring to accompanying drawing, a kind of above-mentioned application process for the inboard free removal template of anticollision barrier concrete bed comprises following content:
With reinforcing bar 4 straightening in the base at beam flange plate 1 top, select and install cushion block 9 according to the thickness of reinforcement cover design thickness and prefabricated plate 2.
Cross dimensions according to square wood strip 7 is anchor bolt 5 unwrapping wire at the top of beam flange plate 1, and select suitable interval anchor bolt 5 to be fixed on the top of beam flange plate 1, the square wood strip 7 that aerated capsule 8 is housed is installed in anchor bolt 5 and prefabricated plate 2 intermediate gap, utilizes fixedly square wood strip 7 of back-pressure nut 6.
An isodiametric round steel pipe 11 is set respectively at the top of prefabricated plate 2 tops and link plate 3, and the two ends 14 of each transverse support bar are welded together with two round steel pipe 11 respectively, transverse support bar can arrange some, and can arrange successively at certain interval.
Until prefabricated plate 2 accurately behind the location, inflation in the aerated capsule 8, reach certain pressure after, beginning guardrail base concrete and maintenance.When treating that guardrail base cast-in-situ concrete reaches a length of time, aerated capsule 8 venting, turnbarrel handle 13, extract hook 15, remove back-pressure nut 6, anchor bolt 5, then remove square wood strip 7, the guardrail concrete bed of prefabricated plate and coagulation forming combines.And then the template frame that carries out other highway section anticollision barrier that joins is vertical.
The relevant technologies content of not addressing in the aforesaid way is taked or is used for reference prior art and can realize.
Need to prove that those skilled in the art can also make such or such easy variation pattern under the instruction of this manual, such as equivalent way, or obvious mode of texturing.Above-mentioned variation pattern all should be within protection domain of the present utility model.
Claims (3)
1. one kind is used for the inboard free removal template of anticollision barrier concrete bed, it is characterized in that comprising prefabricated plate, and prefabricated plate adopts high performance cement-based material to make.
2. according to claim 1 a kind of for the inboard free removal template of anticollision barrier concrete bed, it is characterized in that: it is inboard that above-mentioned prefabricated plate is used for the guardrail concrete bed, combines with the guardrail base concrete after guardrail base concreting.
3. according to claim 1 a kind of it is characterized in that: the thickness of above-mentioned prefabricated plate is 2.5～3.0cm for the inboard free removal template of anticollision barrier concrete bed, and height is identical with the anticollision barrier base, and length is 200～300cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220575332 CN202830759U (en) | 2012-11-05 | 2012-11-05 | Non-dismantling template applied to inner side of anti-collision guardrail concrete-base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220575332 CN202830759U (en) | 2012-11-05 | 2012-11-05 | Non-dismantling template applied to inner side of anti-collision guardrail concrete-base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202830759U true CN202830759U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220575332 Expired - Fee Related CN202830759U (en) | 2012-11-05 | 2012-11-05 | Non-dismantling template applied to inner side of anti-collision guardrail concrete-base |
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| CN (1) | CN202830759U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102912748A (en) * | 2012-11-05 | 2013-02-06 | 山东高速青岛公路有限公司 | Removal-free template on inner side of concrete base of anti-collision guardrail and application method thereof |
| CN106758808B (en) * | 2017-02-23 | 2018-07-03 | 湖南品智工程技术有限公司 | For the template expanding unit of bridge concrete guardrail slding form operation |
| CN111074765A (en) * | 2019-12-01 | 2020-04-28 | 中交路桥建设有限公司 | Granite embedded surface concrete guardrail and construction method thereof |
-
2012
- 2012-11-05 CN CN 201220575332 patent/CN202830759U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102912748A (en) * | 2012-11-05 | 2013-02-06 | 山东高速青岛公路有限公司 | Removal-free template on inner side of concrete base of anti-collision guardrail and application method thereof |
| CN102912748B (en) * | 2012-11-05 | 2014-03-12 | 甘肃路桥建设集团有限公司 | Removal-free template on inner side of concrete base of anti-collision guardrail and application method thereof |
| CN106758808B (en) * | 2017-02-23 | 2018-07-03 | 湖南品智工程技术有限公司 | For the template expanding unit of bridge concrete guardrail slding form operation |
| CN111074765A (en) * | 2019-12-01 | 2020-04-28 | 中交路桥建设有限公司 | Granite embedded surface concrete guardrail and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20141105 |
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| EXPY | Termination of patent right or utility model |