CN110815542A - Construction process for prefabricated artificial wet brushed stone concrete handrail - Google Patents
Construction process for prefabricated artificial wet brushed stone concrete handrail Download PDFInfo
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- CN110815542A CN110815542A CN201911086214.4A CN201911086214A CN110815542A CN 110815542 A CN110815542 A CN 110815542A CN 201911086214 A CN201911086214 A CN 201911086214A CN 110815542 A CN110815542 A CN 110815542A
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- handrail
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/022—Means for inserting reinforcing members into the mould or for supporting them in the mould
- B28B23/024—Supporting means
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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention provides a construction process for a prefabricated imitation wet brushed stone concrete railing, which comprises the following specific steps of opening a stand column, a handrail and a railing sheet by adopting a silica gel mold, performing pressurized grouting after a reinforcement cage and a steel plate are configured, integrally pouring a veneer and the railing sheet, welding a steel plate at the bottom of the stand column and a reserved steel plate on a sidewalk, mechanically connecting the handrail and the stand column, and pouring and sealing a hole of the stand column by adopting grouting material; the rail fields (26687) are cast in situ, binding reinforcing steel bars are reserved through holes from the bottoms of the upright posts and are penetrated, the integral body is formed by cast in situ, and gaps and cavities existing at the joint positions are filled by structural adhesive after assembly is completed. The invention has the beneficial effects that: when saving the engineering time, solve the engineering restriction that does not possess the site pouring, and utilize the water brush stone material matter to once pour and form, can make surface course and structural layer cohesiveness better, have better durability and associativity, more green, construction are swift to make the surface course be water brush stone surface course effect.
Description
Technical Field
The invention relates to a construction process of a prefabricated imitation water brush stone concrete railing, and belongs to the technical field of bridge railing construction.
Background
At present, most projects in China need to use concrete structures. In the case of a concrete structure, deterioration of concrete, whether surface defects of concrete can be controlled, and whether durability of concrete can satisfy a service life are closely related to a construction process, construction details, and curing of concrete at a construction site.
Most of the traditional concrete railing construction processes are in-situ pouring construction, and the following problems are easy to occur: improper concrete vibrating sequence and method; the concrete member is not maintained; when the concrete is poured, the falling process or the thickness of the pouring layer is overlarge; the strength of the concrete is lower than the stripping strength, so that the stripping is early; the construction unit can treat the concrete quality defect freely; optionally adding water in a construction site; the pouring management is not proper, and the thickness of the reinforcing bars and the protective layer is not reasonable; the slump is required to be overlarge on the construction site; sprinkling raw water and collecting noodles; ultrahigh pouring and delayed vibrating; and waiting for too long time of concrete on a construction site, and the like.
At present, China has a large number of concrete handrail structures, and the invention can lead the produced concrete handrail to have the characteristics of environmental protection, quick construction, firm quality and natural appearance. Moreover, the technology disclosed by the invention has very important practical significance for the current development of the fabricated building in China, and has wide application prospect.
Disclosure of Invention
The technical problem is as follows: aiming at the problems in the background technology, the invention provides the construction process of the prefabricated imitation water brushed stone concrete railing, which has the advantages of more standard and controllable construction process, better cohesiveness between the surface layer and the structural layer, better durability and combination, and water brushed stone surface layer effect in appearance and color, and the construction time and the cost are lower.
The technical scheme is as follows: the technical scheme adopted by the invention is as follows: a construction process for prefabricating a waterproof brushed stone concrete railing comprises the following steps:
A) the finished product of the handrail is produced in a factory and transported to a site for installation, firstly, the stand column is subjected to mold opening by a silica gel mold, the embedded steel plate and the reinforcement cage are placed and then pressurized grouting is carried out, the handrail and the handrail sheet are processed and produced by the same principle, and the veneer and the handrail sheet are integrally cast;
B) reserving steel plates at corresponding positions of a newly poured and prefabricated sidewalk plate, welding and fixing the bottom steel plate of the first stand column and the reserved steel plate part of the sidewalk plate, hoisting the handrail and the fence piece by using a forklift, and inserting the handrail and the fence piece into the first reserved hole and the second reserved hole of the stand column;
C) the other end of the handrail is inserted into the first reserved hole, and a steel bar of a reserved bolt is arranged at one end of the handrail to mechanically connect the cross bar with the upright post;
D) welding a second upright column bottom steel plate and a sidewalk plate steel plate, sealing the pre-embedded upright column hole by adopting high-grade cement mortar after the design requirements are met and the concealed acceptance is passed, and preventing the steel plate from being corroded;
E) binding a steel bar with the rail field (26687), and penetrating the steel bar through a preformed hole at the bottom of the upright post to form an integral body after pouring;
F) the installation of the handrail is carried to the on-site splicing, a gap hole exists at the joint position, and the part is filled with structural adhesive after the installation is finished.
Preferably, the design and matching ratio and related indexes of the materials for the railing are as follows: the water-to-glue ratio is 0.35-0.45, and the sand rate is 40-45%; the concrete per cubic meter comprises 0.30-0.35% of water, 0.8-1.2% of cement, 0.2-0.3% of coarse quartz sand, 0.0005-0.0008% of mineral powder, 0.2-0.3% of fine quartz sand, 0.0005-0.0008% of gravel and 0.002-0.004% of admixture.
Preferably, the holes in the handrail in the step C) are sealed by adopting a flexible material such as modified asphalt hemp and the like.
Preferably, the opposite through holes of the first preformed hole and the second preformed hole are hermetically connected by adopting the same material as the handrail.
Preferably, the railing field 26687 is cast in situ and is disconnected at the position of the expansion joint.
Preferably, the diameter requirement of the reserved sleeve hole of the railing field (26687) is (d)Reinforcing bar+2）*3。
Preferably, the upright posts are integrally cast by adopting fine aggregate concrete materials, and the surface is demoulded and washed when the upright posts are semi-dry so as to achieve the effect of brushing a stone surface layer.
Preferably, the handrail is integrally cast by adopting a fine aggregate concrete material, and the surface is demoulded and washed when the handrail is semi-dry so as to achieve the effect of brushing a stone surface layer.
Preferably, the fence piece and the veneer are integrally cast by adopting a fine aggregate concrete material, and the surface is demoulded and washed by water to achieve the effect of a buff coat when the surface is semi-dry.
Has the advantages that: compared with the prior art, the invention has the following beneficial effects:
1. the construction is quick, and the combination and the durability are better
The watershed stone surface layer and the structural layer of the prefabricated imitation watershed stone concrete rail disclosed by the invention are poured once, so that the construction time can be greatly saved, and the bonding performance and the durability of the watershed stone surface layer and the structural layer are better.
2. The construction flexibility is higher
The traditional bridge upright post and the sidewalk plate are integrally cast, once positioning errors or construction errors occur, only the pouring can be chiseled, time and labor are wasted, and cost is wasted.
3. Green environment protection
The surface layer of the traditional water brush stone on the surface of the railing is sprayed or smeared, so that surface layer slurry is easy to fall off, and the surrounding environment is polluted greatly.
4. Reliable strength and easy protection of cultural heritage
Because most of the concrete railings of the water brushed stone surface layer exist in the historical bridge building and have important historical value, artistic value and scientific value, the water brushed stone surface layer effect of the concrete railings, which is realized by the invention, follows the authenticity and integrity requirements in the cultural relic protection and conforms to the requirements of the cultural relic protection law. And because the scrubbing stone surface course and the structural layer are integrally cast in one step, experiments show that the strength meets the design specifications.
Drawings
Fig. 1 is a schematic view of a connecting joint of a railing upright post and an upper cross beam and a lower cross beam in the invention.
Fig. 2 is a sectional view of the first prepared hole of fig. 1.
Fig. 3 is a sectional view of the second preformed hole of fig. 1.
FIG. 4 is a cross-sectional view of the railing field 26687 of FIG. 1.
Fig. 5 is a schematic view of a connecting joint between a railing upright post and a sidewalk board in the invention.
List of reference numerals:
1-pre-buried steel plates, 2-reinforcement cages, 3-steel plates, 5-first preformed holes, 6-second preformed holes, 7-steel bars, 8-high-grade cement mortar, 9-railing field \26687, 10-gap holes, 11-top edges of sidewalk boards and 12-bottom edges of sidewalk boards.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention.
Examples
As shown in the figure, when the approach bridge railing of a certain bridge is constructed, the approach bridge railing construction method disclosed by the invention is adopted for the approach bridge railing construction.
(1) The finished product handrail is produced in a factory and transported to a site for installation, firstly, the stand column is subjected to silica gel mold opening, the pre-buried steel plate 1 and the reinforcement cage 2 are placed and then pressurized grouting is carried out, the stand column is integrally cast by adopting a fine aggregate concrete material, the handrail is integrally cast by adopting a fine aggregate concrete material, the fence piece and the veneer are integrally cast by adopting a fine aggregate concrete material, and the surface of the handrail is demoulded and washed when the handrail is semi-dry, so that the surface of the handrail has the effect of a cement stone surface layer; the design matching ratio and related indexes of the materials for the handrail are as follows: the water-glue ratio is 0.41, and the sand rate is 42%; the concrete has the material dosage ratio of 0.32 per cubic meter, 1 cement, 0.25 coarse quartz sand, 0.0005 mineral powder, 0.25 fine quartz sand, 0.0005 gravel and 0.003 additive.
(2) Reserving a steel plate 3 at the corresponding position of a newly poured and prefabricated sidewalk plate, welding and fixing the bottom steel plate of a first upright post and the reserved steel plate part of the sidewalk plate, hoisting a handrail and a fence piece by using a forklift, and inserting the handrail and the fence piece into a first reserved hole 5 and a second reserved hole 6 of the upright post; the first preformed hole 5 and the second preformed hole 6 are hermetically connected with the through holes by adopting the same material as the handrail.
(3) The other end of the handrail is inserted into the preformed hole 5 of the column cap, the inner hole of the handrail is sealed by adopting flexible materials such as modified asphalt hemp and the like, and one end of the handrail is provided with a steel bar 7 of a preformed bolt to mechanically connect the cross bar with the upright post.
(4) Weld second stand bottom steel sheet and sidewalk board steel sheet, reach the designing requirement and through hiding the acceptance check back, adopt high-grade cement mortar 8 to seal pre-buried stand hole, prevent the steel sheet corrosion.
(5) Binding steel bars on the railing field (266879), wherein the steel bars penetrate through a preformed hole at the bottom of the upright post, and the diameter requirement of the preformed sleeve hole of the railing field (266879)Reinforcing bar+ 2) — 3, so that the upright post and the ground \26687are cast into a whole; the railing field 26687 is cast in situ with 9 concrete and disconnected at the position of the expansion joint.
(6) The installation of the handrail is carried to the on-site splicing, a gap hole 10 is formed in the joint position, and the part is filled with structural adhesive after the installation is finished.
The above is only a preferred embodiment of the present invention, and is intended to show the prominent technical effects and advantages of the present invention, and not to limit the technical solution of the present invention. It should be understood by those skilled in the art that all modifications, changes or substitutions based on the technical contents of the present invention should be covered within the technical scope of the appended claims.
Claims (9)
1. The construction process of the prefabricated imitation water brushed stone concrete handrail is characterized by comprising the following steps of:
A) adopting a factory to produce a prefabricated product rail, firstly opening the upright post, the handrail and the rail piece by using a silica gel mold, placing the embedded steel plate (1) and the reinforcement cage (2) and then performing pressurized grouting, and integrally pouring the veneer and the rail piece;
B) a steel plate (3) is reserved on the sidewalk plate, the steel plate at the bottom of the first upright post and the reserved steel plate (3) of the sidewalk plate are welded and fixed, and then the handrail and the fence piece are respectively inserted into a first reserved hole (5) and a second reserved hole (6) of the upright post;
C) the other end of the handrail is inserted into the first preformed hole (5), and a steel bar (7) of a preformed bolt is arranged at one end of the handrail to mechanically connect the handrail and the upright post;
D) welding a second column bottom steel plate and a sidewalk plate steel plate (3), and sealing the pre-embedded column hole by adopting high-grade cement mortar (8);
E) binding steel bars on the railing fields (26687) (9), and penetrating the steel bars through preformed holes at the bottoms of the upright posts;
F) the gap hole (10) at the joint position of the handrail is filled with structural adhesive.
2. The construction process of the imitation wet brushed stone concrete handrail as claimed in claim 1, wherein: the design matching ratio and related indexes of the materials for the handrail are as follows: the water-to-glue ratio is 0.35-0.45, and the sand rate is 40-45%; the concrete per cubic meter comprises 0.30-0.35% of water, 0.8-1.2% of cement, 0.2-0.3% of coarse quartz sand, 0.0005-0.0008% of mineral powder, 0.2-0.3% of fine quartz sand, 0.0005-0.0008% of gravel and 0.002-0.004% of admixture.
3. The construction process of the imitation wet brushed stone concrete handrail as claimed in claim 1, wherein: and C), sealing the inner pores of the handrail by adopting flexible materials such as modified asphalt hemp threads and the like.
4. The imitation wet brushed stone concrete handrail construction process of claim 2, characterized in that: the opposite-penetrating holes of the first preformed hole (5) and the second preformed hole (6) are hermetically connected with the same material of the railing.
5. The construction process of the imitation wet brushed stone concrete handrail as claimed in claim 1, wherein: the railing field (26687).
6. The construction process of the imitation wet brushed stone concrete handrail as claimed in claim 1, wherein: the diameter of the reserved sleeve hole of the railing field (26687)Reinforcing bar+2）*3。
7. The construction process of the imitation wet brushed stone concrete handrail as claimed in claim 1, wherein: the upright posts are integrally cast by adopting fine aggregate concrete materials, and the surfaces of the upright posts are washed by stripping and washing when the upright posts are semi-dry.
8. The construction process of the imitation wet brushed stone concrete handrail as claimed in claim 1, wherein: the handrail is formed by integrally pouring fine aggregate concrete materials, and the surface is washed by stripping and washing when the handrail is semi-dry.
9. The construction process of the imitation wet brushed stone concrete handrail as claimed in claim 1, wherein: the fence piece and the veneer are integrally cast by adopting a fine aggregate concrete material, and the surface is washed by stripping and washing when the fence piece and the veneer are semi-dry.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911086214.4A CN110815542B (en) | 2019-11-08 | 2019-11-08 | Construction process for prefabricated artificial wet brushed stone concrete handrail |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911086214.4A CN110815542B (en) | 2019-11-08 | 2019-11-08 | Construction process for prefabricated artificial wet brushed stone concrete handrail |
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| CN110815542A true CN110815542A (en) | 2020-02-21 |
| CN110815542B CN110815542B (en) | 2021-07-13 |
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Citations (7)
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| KR200201260Y1 (en) * | 2000-05-04 | 2000-11-01 | 안성환 | Triple pipe panel structure |
| KR100888643B1 (en) * | 2007-09-19 | 2009-03-12 | 한양대학교 산학협력단 | Figurative eco-environment fence |
| CN101581139A (en) * | 2009-05-28 | 2009-11-18 | 于永强 | Combination balustrade and construction technology |
| CN103993778A (en) * | 2014-05-08 | 2014-08-20 | 陕西建工第三建设集团有限公司 | Bare concrete handrail combination overall-pouring one-step forming construction technology of pseudo-classic architecture |
| CN204676990U (en) * | 2015-05-13 | 2015-09-30 | 中泰国际高新技术有限公司 | Novel protective railing |
| CN107914332A (en) * | 2016-10-10 | 2018-04-17 | 北京市建筑工程研究院有限责任公司 | A kind of prefabricated exposed aggregate finish wallboard and preparation method thereof |
| CN207958991U (en) * | 2018-01-22 | 2018-10-12 | 三能集成房屋股份有限公司 | A kind of piece for assembling type fence |
-
2019
- 2019-11-08 CN CN201911086214.4A patent/CN110815542B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200201260Y1 (en) * | 2000-05-04 | 2000-11-01 | 안성환 | Triple pipe panel structure |
| KR100888643B1 (en) * | 2007-09-19 | 2009-03-12 | 한양대학교 산학협력단 | Figurative eco-environment fence |
| CN101581139A (en) * | 2009-05-28 | 2009-11-18 | 于永强 | Combination balustrade and construction technology |
| CN103993778A (en) * | 2014-05-08 | 2014-08-20 | 陕西建工第三建设集团有限公司 | Bare concrete handrail combination overall-pouring one-step forming construction technology of pseudo-classic architecture |
| CN204676990U (en) * | 2015-05-13 | 2015-09-30 | 中泰国际高新技术有限公司 | Novel protective railing |
| CN107914332A (en) * | 2016-10-10 | 2018-04-17 | 北京市建筑工程研究院有限责任公司 | A kind of prefabricated exposed aggregate finish wallboard and preparation method thereof |
| CN207958991U (en) * | 2018-01-22 | 2018-10-12 | 三能集成房屋股份有限公司 | A kind of piece for assembling type fence |
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| CN110815542B (en) | 2021-07-13 |
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