CN214219352U - Adopt assembled to exempt from to tear open combination pier stud of prefabricated template - Google Patents
Adopt assembled to exempt from to tear open combination pier stud of prefabricated template Download PDFInfo
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- CN214219352U CN214219352U CN202022599363.5U CN202022599363U CN214219352U CN 214219352 U CN214219352 U CN 214219352U CN 202022599363 U CN202022599363 U CN 202022599363U CN 214219352 U CN214219352 U CN 214219352U
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Abstract
The utility model relates to a bridge engineering technical field, concretely relates to adopt assembled exempt from to tear open combination pier stud of prefabricated template, including cushion cap, a plurality of prefabricated template and cup joint the device, the shell material of prefabricated template is ultra high performance concrete, the cushion cap is fixed in on the installation face, the cushion cap includes embedded bar and a plurality of reinforcing bar head, the template is including indulging muscle, stirrup, cup jointing device and core concrete layer, indulge muscle and stirrup and set up inside the prefabricated template, connect perpendicularly through cup jointing the device between the prefabricated template, the prefabricated template is installed perpendicularly in the cushion cap upper surface and passes the preformed hole and connect the bolt through the reinforcing bar head, finally makes prefabricated template and cushion cap relatively fixed through setting up the mortar fixed bed on the bulge loop. The utility model discloses simple structure provides a cost is low, and corrosion resistance, impermeability are strong and firm in connection's a combination pier stud that adopts prefabricated template is exempted from to tear open by assembled.
Description
Technical Field
The utility model relates to a bridge engineering technical field, concretely relates to adopt assembled exempt from to tear open combination pier stud of prefabricated template.
Background
In the prior art, the durability problem of the sea-crossing bridge is very prominent. Taking the substructure as an example, the reinforced concrete structure is basically adopted, and is easily corroded by seawater chloride ions, so that the structural performance is reduced, and the normal operation and the service life of the bridge are seriously influenced.
In the prior art, the pier of the sea-crossing bridge is mainly subjected to corrosion prevention by adopting the following measures: (1) marine concrete is used as a main body of the pier; (2) stainless steel bars or FRP bars are adopted to replace common steel bars; (3) wrapping the pier stud by using a corrosion-resistant foam plate; (4) the silane-permeable anti-corrosion terrace is arranged on the water surface of the cross-sea bridge and comprises a base layer, wherein the base layer is made of cement, a sealing layer is arranged on the upper surface of the base layer, a wear-resistant layer is arranged on one side, away from the base layer, of the sealing layer, and the terrace further comprises an adhesive layer, a leakage-proof isolation layer, a permeation layer and an anti-corrosion layer; (5) and a cathode circuit system is adopted to adsorb chloride ions to water outside the pier so as to prevent corrosion. The above configuration has disadvantages in that: (1) the manufacturing cost of the marine concrete is high, and the bridge adopting the marine concrete still has the corrosion problem; (2) by adopting cast-in-place construction, the number of the adopted steel prefabricated templates is large, and the steel prefabricated templates are in an ocean extreme environment, so that the turnover and reuse times are reduced, and the manufacturing cost is further increased; (3) the corrosion prevention measures such as the adoption of a cathode circuit system need long-term maintenance and replacement, and the manufacturing cost in the whole life cycle is increased.
In order to improve the technology in the aspect of the above deficiency (2), for example, the disassembly-free prefabricated formwork for manufacturing a square concrete pier stud disclosed in chinese patent CN207047684U includes a steel bar framework, a plurality of studs and a concrete cladding, wherein the studs are uniformly distributed on the inner hole wall of the reinforced concrete structure to strengthen the connection between the disassembly-free prefabricated formwork and the core concrete in the cast-in-place process, and the problem mainly solved is that the prefabricated formwork is difficult to disassemble in the pier construction. Based on the technical scheme, the concrete on the outer surface of the prefabricated template is not used in severe environments such as the ocean, and meanwhile, in the cast-in-place process, the prefabricated template and the prefabricated template are relatively unfixed, so that the prefabricated template is easy to displace or overturn.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to solve the technical problems that: the combined pier column adopting the prefabricated assembled form free of disassembly has the advantages of low manufacturing cost, strong corrosion resistance and permeability resistance and firm connection.
In order to solve the technical problem, the utility model discloses a technical scheme be: a combined pier column adopting an assembled disassembly-free prefabricated template is arranged on an installation surface and comprises a bearing platform, a plurality of prefabricated templates and a sleeving device, wherein the prefabricated templates are sequentially stacked and vertically arranged on the upper surface of the bearing platform;
the bearing platform is fixed on the mounting surface and comprises embedded steel bars and a plurality of steel bar heads, the embedded steel bars are arranged in the bearing platform, one ends of the steel bar heads are connected with the embedded steel bars, and the other ends of the steel bar heads protrude out of the upper surface of the bearing platform and extend upwards vertically;
the prefabricated template is in a hollow cylindrical shape with openings at two ends, the prefabricated template comprises a shell, longitudinal reinforcements, stirrups and a core concrete layer, the shell is made of ultrahigh concrete, the longitudinal reinforcements and the stirrups are arranged inside the shell, and the core concrete layer is positioned in a cavity surrounded by the shell;
the prefabricated template is vertically connected with the adjacent prefabricated template through a sleeving device;
the lower end of the prefabricated template directly connected with the bearing platform is provided with an annular first convex edge horizontally extending away from the shell cavity, a plurality of preformed holes are formed in the first convex edge, and the reinforcing steel bar head penetrates through the preformed holes and is connected with the bolt for fixing.
The sleeving device comprises a spiral steel bar and an embedded sleeve;
the prefabricated formwork's the upper end all is provided with the annular second protruding edge that the level extends towards the shell cavity on the border of lower extreme, adjacent prefabricated formwork's the protruding edge of relative second is provided with a plurality of blind holes respectively, pre-buried cover cylinder cup joints in one of them blind hole, the one end of spiral rod iron cup joints in pre-buried cover cylinder, the other end of spiral rod iron cup joints in another relative blind hole.
And a mortar fixing layer is also arranged on the first convex edge at the lower end of the prefabricated template directly connected with the bearing platform.
Wherein the thickness of the prefabricated template is 20-30 mm.
The diameter of the longitudinal ribs in the inner layer of the prefabricated template is 6-10 mm, and the distance between the hooping ribs is 100 mm.
The beneficial effects of the utility model reside in that:
(1) by adopting the RUHPC (reinforced high performance concrete) shell, the form is not required to be disassembled after pouring, and a prefabricated segment assembling mode is adopted, so that the assembling is convenient, and the construction efficiency is improved;
(2) the RUHPC shell has strong chloride ion permeability resistance and good corrosion resistance, so that the service life of the pier column in the ocean is effectively prolonged;
(3) the core concrete poured into the RUHPC prefabricated formwork is ordinary concrete, the manufacturing cost is lower than that of marine concrete, and meanwhile, the longitudinal reinforcements can be ordinary reinforcements, so that the manufacturing cost is further reduced;
(4) RUHPC prefabricated template is built for the festival segmentation in cast-in-place process, and convenient construction is through cup jointing the device between the prefabricated template of RUHPC simultaneously, and spiral rod iron and pre-buried sleeve effectively improve RUHPC prefabricated template concatenation process antidumping ability promptly.
Drawings
Fig. 1 is a front sectional view of the present invention;
FIG. 2 is a schematic view of the cross-sectional structure of A-A, B-B, C-C;
fig. 3 is a schematic structural view of the splicing joint of the prefabricated formworks.
Description of reference numerals: 1. prefabricating a template; 2. a spiral steel bar; 3. pre-burying a sleeve; 4. a mortar layer; 5. a core concrete layer; 6. a bolt; 7. a mortar fixed layer; 8. embedding reinforcing steel bars in advance; 9. longitudinal ribs; 10. hooping; 11. and (4) a reinforcement cage.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The utility model discloses the most crucial design lies in: through using the prefabricated template of the RUHPC of a kind of exempting from to tear open to carry out the pier stud and pour and reduce the pier stud cost, improve the corrosion-resistant and anti permeability of pier stud and prefabricated template and through cup jointing device installation stability, firm in connection, prevent the emergence that cast-in-place in-process prefabricated template topples.
Referring to fig. 1 to 3, the present invention relates to a combined pier stud using an assembly type non-dismantling prefabricated form 1, which is disposed on a mounting surface and comprises a bearing platform, a plurality of prefabricated forms 1 and a sleeve device, wherein the prefabricated forms 1 are sequentially stacked and vertically mounted on the upper surface of the bearing platform; the bearing platform is fixed on the mounting surface and comprises embedded steel bars 8 and a plurality of steel bar heads, the embedded steel bars 8 are arranged in the bearing platform, one ends of the steel bar heads are connected with the embedded steel bars 8, and the other ends of the steel bar heads protrude out of the upper surface of the bearing platform and extend upwards vertically; the prefabricated formwork 1 is in a hollow cylindrical shape with openings at two ends, the prefabricated formwork 1 comprises a shell, longitudinal ribs 9, stirrups 10 and a core concrete layer 5, the shell is made of ultrahigh concrete, the longitudinal ribs 9 and the stirrups 10 are arranged inside the shell, and the core concrete layer 5 is located in a cavity defined by the shell; the prefabricated template 1 is vertically connected with the adjacent prefabricated template 1 through a sleeving device; the lower end of the prefabricated template 1 directly connected with the bearing platform is provided with an annular first convex edge horizontally extending away from the cavity of the shell, a plurality of preformed holes are formed in the first convex edge, and the reinforcing steel bar head penetrates through the preformed holes and is connected with the bolts 6 for fixing.
Specifically, the utility model discloses a theory of operation does: the user is through fixing the cushion cap in the mounting groove, and later pass preformed template 1 of first layer through the reinforcing bar head preformed hole and bolt 6 is fixed, makes preformed template 1 and cushion cap relatively fixed, pours the core concrete into preformed template 1 this moment and forms core concrete layer 5, treats that the first layer pours the completion back, is connected prefabricated template 1 of second layer and the preformed template 1 of first layer through cup jointing the device, and continue to pour, repeats above-mentioned step to predetermineeing highly, in order to accomplish the cast-in-place process of combination pier stud.
It should be noted that the core concrete layer 5 may be ordinary concrete, i.e. further reducing the construction costs.
Optionally, the upper end of the embedded steel bar 8 protrudes out of the bearing platform and forms a steel bar cage 11, and the prefabricated formwork 1 is installed on the outer side of the steel bar cage 11 and poured.
As can be seen from the above description, the utility model has the advantages that: the construction period is shortened by the sectional type assembling and cast-in-place process of the prefabricated template 1; meanwhile, the prefabricated template 1 is free from being disassembled after the pouring is finished, and the shell has strong permeability resistance and corrosion resistance so as to further prolong the service life of the combined pier column in a severe marine environment; longitudinal ribs 9 and stirrups 10 are arranged on the inner layer of the prefabricated template 1 so as to further improve the impact-resistant and energy-consumption-resistant characteristics of the prefabricated template 1; the prefabricated templates 1 are vertically connected through the sleeve joint device so as to improve the anti-overturning capacity of the prefabricated templates 1 in the assembling process.
Further, the sleeving device comprises a spiral steel bar 2 and a pre-embedded sleeve 3; the edge of the upper end and the lower end of each prefabricated template 1 is provided with an annular second convex edge extending towards the housing cavity horizontally, the opposite second convex edges of the adjacent prefabricated templates 1 are respectively provided with a plurality of blind holes, the embedded sleeve 3 is sleeved in one of the blind holes, one end of the spiral steel bar 2 is sleeved in the embedded sleeve 3, and the other end of the spiral steel bar 2 is sleeved in the other opposite blind hole.
As can be seen from the above description, the assembling process of the prefabricated formworks 1 mainly includes that the lower end of the spiral steel bar 2 at the lower end of the upper prefabricated formwork 1 is connected with the embedded sleeve 3 at the upper end of the lower prefabricated formwork 1 to realize the relative connection of the two prefabricated formworks 1, that is, the anti-overturning capability of the prefabricated formworks 1 in the assembling process is improved through the process, and the construction period is prevented from being prolonged due to the overturning of the upper prefabricated formwork 1 in the assembling process and other construction problems are prevented.
Preferably, prefabricated template 1 is still including filling the chamber, it sets up inside prefabricated template 1 to fill the chamber, it includes inner chamber, outside passageway and inside passage to fill the chamber, outside passageway intercommunication inner chamber and the shell outside of prefabricated template 1, the terminal surface of inside passage connection inner chamber and adjacent prefabricated template 1, it is provided with mortar layer 4 to fill the intracavity.
It can be known from the above description that, after the two prefabricated formworks 1 are sleeved, the mortar layer 4 formed by pouring mortar into the cavity at the lower end of the prefabricated formwork 1 at the upper side is further connected and fixed with the two prefabricated formworks 1, so as to ensure the relative fixation of the connected prefabricated formworks 1 in the combined pier column cast-in-place process and prevent the prefabricated formworks 1 from overturning and relative displacement.
Further, a mortar fixing layer 7 is further arranged on the first convex edge at the lower end of the prefabricated formwork 1 directly connected with the bearing platform.
Specifically, after the reinforcement head passes through the preformed hole and is connected with the bolt 6 for fixing, mortar is continuously poured on the first convex edge to form a mortar fixing layer 7 so as to coat the reinforcement head and further fix the first convex edge and the upper surface of the bearing platform.
It should be noted that the mortar fixing layer 7 is made of ultra-high performance mortar, that is, the protruding edge is filled with the ultra-high performance mortar, so that the exposed end of the reinforcing steel bar head is prevented from being exposed in seawater in the actual installation process, and the service life of the pier column is prevented from being affected.
Further, the thickness of the prefabricated template 1 is 20-30 mm.
Further, the diameter of the longitudinal ribs 9 in the inner layer of the prefabricated formwork 1 is 6-10 mm, and the distance between the hoop ribs 10 is 100 mm.
From the above description, the basic requirements of the combined pier column cast-in-place process and the basic requirements of the combined pier column in the ocean severe environment can be met by further limiting the thickness of the prefabricated template 1, the diameter of the longitudinal ribs 9 in the prefabricated template 1 and the distance between the stirrups 10.
In conclusion, the RUHPC shell is adopted, the form is not required to be disassembled after pouring, a prefabricated section assembling mode is adopted, assembling is convenient, and construction efficiency is improved; the RUHPC shell has strong chloride ion permeability resistance and good corrosion resistance, so that the service life of the pier column in the ocean is effectively prolonged; the core concrete poured into the RUHPC prefabricated formwork 1 is ordinary concrete, the manufacturing cost is lower than that of marine concrete, and meanwhile, the longitudinal ribs 9 can be ordinary steel bars, so that the manufacturing cost is further reduced; RUHPC prefabricated template 1 is built for the festival segmentation in cast-in-place process, convenient construction, simultaneously through cup jointing the device between the RUHPC prefabricated template 1, spiral rod iron 2 and pre-buried sleeve 3 promptly effectively improve the 1 concatenation process antidumping ability of RUHPC prefabricated template.
Referring to fig. 1 to 3, a first embodiment of the present invention is:
a combined pier column adopting an assembled disassembly-free prefabricated template 1 is arranged on an installation surface and comprises a bearing platform, a plurality of prefabricated templates 1 and a sleeving device, wherein the prefabricated templates 1 are sequentially stacked and vertically arranged on the upper surface of the bearing platform;
the bearing platform is fixed on the mounting surface and comprises embedded steel bars 8 and a plurality of steel bar heads, the embedded steel bars 8 are arranged in the bearing platform, one ends of the steel bar heads are connected with the embedded steel bars 8, and the other ends of the steel bar heads protrude out of the upper surface of the bearing platform and extend upwards vertically;
the prefabricated formwork 1 is in a hollow cylindrical shape with openings at two ends, the prefabricated formwork 1 comprises a shell, longitudinal ribs 9, stirrups 10 and a core concrete layer 5, the shell is made of ultrahigh concrete, the longitudinal ribs 9 and the stirrups 10 are arranged inside the shell, and the core concrete layer 5 is located in a cavity defined by the shell;
the prefabricated template 1 is vertically connected with the adjacent prefabricated template 1 through a sleeving device;
the lower end of the prefabricated template 1 directly connected with the bearing platform is provided with an annular first convex edge horizontally extending away from the cavity of the shell, a plurality of preformed holes are formed in the first convex edge, and the reinforcing steel bar head penetrates through the preformed holes and is connected with a bolt 6 for fixing;
the sleeving device comprises a spiral steel bar 2 and a pre-embedded sleeve 3;
annular second convex edges extending towards the shell cavity horizontally are arranged on the edges of the upper end and the lower end of each prefabricated template 1, a plurality of blind holes are respectively formed in the second opposite convex edges of the adjacent prefabricated templates 1, the embedded sleeve 3 is sleeved in one of the blind holes, one end of the spiral steel bar 2 is sleeved in the embedded sleeve 3, and the other end of the spiral steel bar 2 is sleeved in the other opposite blind hole;
a mortar fixing layer 7 is also arranged on the first convex edge at the lower end of the prefabricated template 1 directly connected with the bearing platform;
the thickness of the prefabricated template 1 is 20-30 mm;
the diameter of the longitudinal ribs 9 in the inner layer of the prefabricated template 1 is 6-10 mm, and the distance between the hooping 10 is 100 mm.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (5)
1. A combined pier column adopting an assembled disassembly-free prefabricated template is arranged on an installation surface and is characterized by comprising a bearing platform, a plurality of prefabricated templates and a sleeving device, wherein the prefabricated templates are sequentially stacked and vertically arranged on the upper surface of the bearing platform;
the bearing platform is fixed on the mounting surface and comprises embedded steel bars and a plurality of steel bar heads, the embedded steel bars are arranged in the bearing platform, one ends of the steel bar heads are connected with the embedded steel bars, and the other ends of the steel bar heads protrude out of the upper surface of the bearing platform and extend upwards vertically;
the prefabricated template is in a hollow cylindrical shape with openings at two ends, the prefabricated template comprises a shell, longitudinal reinforcements, stirrups and a core concrete layer, the shell is made of ultrahigh concrete, the longitudinal reinforcements and the stirrups are arranged inside the shell, and the core concrete layer is positioned in a cavity surrounded by the shell;
the prefabricated template is vertically connected with the adjacent prefabricated template through a sleeving device;
the lower end of the prefabricated template directly connected with the bearing platform is provided with an annular first convex edge horizontally extending away from the shell cavity, a plurality of preformed holes are formed in the first convex edge, and the reinforcing steel bar head penetrates through the preformed holes and is connected with the bolt for fixing.
2. The combined pier column adopting the assembly type disassembly-free prefabricated formwork as claimed in claim 1, wherein the sleeving device comprises a spiral steel bar and an embedded sleeve;
the prefabricated formwork's the upper end all is provided with the annular second protruding edge that the level extends towards the shell cavity on the border of lower extreme, adjacent prefabricated formwork's the protruding edge of relative second is provided with a plurality of blind holes respectively, pre-buried cover cylinder cup joints in one of them blind hole, the one end of spiral rod iron cup joints in pre-buried cover cylinder, the other end of spiral rod iron cup joints in another relative blind hole.
3. The combined pier column adopting the prefabricated assembly-type disassembly-free template as claimed in claim 1, wherein a mortar fixing layer is further arranged on the first convex edge at the lower end of the prefabricated template directly connected with the bearing platform.
4. The assembled pier stud adopting the prefabricated assembled formwork without disassembly as claimed in any one of claims 1 to 3, wherein the thickness of the prefabricated formwork is 20-30 mm.
5. The assembled pier stud adopting the prefabricated assembled formwork free of disassembly as claimed in any one of claims 1 to 3, wherein the diameter of the longitudinal ribs in the inner layer of the prefabricated formwork is 6-10 mm, and the spacing of the stirrups is 100 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022599363.5U CN214219352U (en) | 2020-11-11 | 2020-11-11 | Adopt assembled to exempt from to tear open combination pier stud of prefabricated template |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022599363.5U CN214219352U (en) | 2020-11-11 | 2020-11-11 | Adopt assembled to exempt from to tear open combination pier stud of prefabricated template |
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| CN214219352U true CN214219352U (en) | 2021-09-17 |
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| CN202022599363.5U Active CN214219352U (en) | 2020-11-11 | 2020-11-11 | Adopt assembled to exempt from to tear open combination pier stud of prefabricated template |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541250A (en) * | 2022-01-18 | 2022-05-27 | 浙江宏日泰耐克新材料科技有限公司 | Ultrahigh-performance concrete combined pier and construction process thereof |
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2020
- 2020-11-11 CN CN202022599363.5U patent/CN214219352U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541250A (en) * | 2022-01-18 | 2022-05-27 | 浙江宏日泰耐克新材料科技有限公司 | Ultrahigh-performance concrete combined pier and construction process thereof |
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