CN216999268U - Conical hollow concrete pier column of non-dismantling formwork - Google Patents
Conical hollow concrete pier column of non-dismantling formwork Download PDFInfo
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- CN216999268U CN216999268U CN202220647945.2U CN202220647945U CN216999268U CN 216999268 U CN216999268 U CN 216999268U CN 202220647945 U CN202220647945 U CN 202220647945U CN 216999268 U CN216999268 U CN 216999268U
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Abstract
The utility model provides a free of form removal's hollow concrete pier stud of toper, belongs to bridge engineering construction technical field, including ultra high performance concrete shell and ultra high performance concrete inner shell, the ultra high performance concrete shell is hollow toper structure, and arranges ultra high performance concrete inner shell at its inside coaxial, and the cover is equipped with framework of steel reinforcement outside the ultra high performance concrete inner shell, is provided with the concrete of encapsulation framework of steel reinforcement between ultra high performance concrete inner shell and ultra high performance concrete outer shell. The concrete pier column can solve the problems of difficulty in cast-in-place concrete construction of the supporting template and complex transportation, hoisting and construction of fully-prefabricated concrete components in complex areas, shortens the construction period and well reflects the construction requirements of green buildings.
Description
Technical Field
The utility model belongs to the technical field of bridge engineering construction, and particularly relates to a conical hollow concrete pier stud of a non-dismantling template.
Background
In recent years, with the rapid development of traffic industry, high-pier bridges appear in many highway bridges and railway bridges, bridge piers are one of important bridge components, and have the capacity of resisting horizontal earthquake action besides the capacity of bearing vertical load, and practice proves that hollow concrete piers are used in many high-pier large-span bridges. The hollow concrete pier column has the advantages of light dead weight, high self rigidity, high strength/mass ratio, high rigidity/mass ratio and good anti-seismic performance. The construction of the high pier bridge generally comprises the steps of firstly building a template support, installing a template, binding an internal steel reinforcement framework, pouring concrete, and removing the template and the template support after the concrete reaches the design strength. The construction method adopting the cast-in-place concrete is relatively difficult in areas with poor construction environments, consumes a large amount of time, has long construction period and large influence on the environment, and is not beneficial to promoting the development of building energy conservation and green buildings. Along with the development of bridge construction technology, prefabricated assembled concrete bridges appear, and the prefabricated assembled concrete bridges mainly comprise integral prefabricated concrete bridges and part of prefabricated concrete bridges. Due to the limitation of conditions such as manufacturing, hoisting, transporting and installing of precast concrete components, the use of an integral type prefabricated concrete structure has a plurality of problems, and a semi-prefabricated construction process adopting part of precast concrete becomes an effective construction method, namely, part of the components are prefabricated, or one part of the components are prefabricated, and the other parts are cast in situ, so that the complex procedures and technical difficulties of manufacturing, transporting, hoisting, constructing and the like of the components can be effectively solved. At present, in the construction of domestic and foreign bridges, the number of prefabricated concrete components adopted for the upper structures is relatively large, the number of prefabricated concrete components adopted for the lower structures such as abutments, piers and the like in the bridges is relatively small, the main reason is that the bridge piers need to bear the vertical load and horizontal earthquake, for this reason, the prefabricated concrete segmental type piers are adopted during the design of the piers, the connection among segments becomes the most key technical problem, the integral prefabricated concrete piers have better integrity and better earthquake resistance, however, the sectional size and the dead weight of the integral pier stud are relatively large, and particularly, for a high-pier bridge pier stud, the integral precast concrete pier stud is adopted, the manufacturing, hoisting, transporting, installing and the like of the pier stud are difficult or even impossible to realize, and in order to solve the technical problem of the construction of the integral high-pier bridge pier stud, a conical hollow concrete pier stud of a non-dismantling template is researched and designed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a disassembly-free template conical hollow concrete pier stud, namely, an inner shell and an outer shell are made of ultra-high performance concrete materials with high strength, large elastic modulus and good durability, namely, a large diameter is used as the outer side, a small diameter is placed in the large diameter and used as a disposable template, a steel reinforcement framework is placed between the two shells, and concrete is poured between the two shells, so that the disassembly-free template conical hollow concrete pier stud with strong corrosion resistance, convenient construction and good durability is formed. The combined pier column can solve the problems of difficulty in cast-in-place concrete construction of the supporting template and complex transportation, hoisting and construction of fully-prefabricated concrete components in complex areas, shortens the construction period and well reflects the construction requirements of green buildings.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the conical hollow concrete pier column comprises an ultrahigh-performance concrete outer shell and an ultrahigh-performance concrete inner shell, wherein the ultrahigh-performance concrete outer shell is of a hollow conical structure, the ultrahigh-performance concrete inner shell is coaxially arranged in the ultrahigh-performance concrete outer shell, a steel reinforcement framework is sleeved on the outer side of the ultrahigh-performance concrete inner shell, and concrete for packaging the steel reinforcement framework is arranged between the ultrahigh-performance concrete inner shell and the ultrahigh-performance concrete outer shell.
Gaps are arranged between the steel bar framework and the ultra-high performance concrete inner shell and between the steel bar framework and the ultra-high performance concrete outer shell.
The steel bar framework comprises vertical longitudinal bars and oblique longitudinal bars, wherein the vertical longitudinal bars are arranged at equal intervals along the circumferential direction, inner stirrups are welded on the outer side of the steel bar framework at equal intervals along the length direction, the oblique longitudinal bars are arranged at equal intervals along the circumferential direction, and outer stirrups are welded on the outer side of the steel bar framework at equal intervals along the length direction.
The inclination angle of the inclined longitudinal ribs is consistent with that of the section of the ultra-high performance concrete shell.
The utility model has the technical effects that:
the inner shell and the outer shell are made of ultra-high performance concrete materials with high strength, large elastic modulus and good durability, namely, the large diameter is used as the outer side, the small diameter is placed in the large diameter and used as a disposable template, the reinforcement cage is placed between the two shells, and concrete is poured between the two shells, so that the template-free tapered hollow concrete pier column with strong corrosion resistance, convenient construction and good durability is formed. The combined pier column can solve the problems of difficulty in cast-in-place concrete construction of the supporting template and complex transportation, hoisting and construction of fully-prefabricated concrete components in complex areas, shortens the construction period and well reflects the construction requirements of green buildings.
Drawings
FIG. 1 is a cross-sectional view of a tapered hollow concrete pier of the demolition-free form of the present invention when no concrete is poured;
FIG. 2 is a schematic view of the utility model taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view of a tapered hollow concrete pier of the demolition-free form of the present invention;
FIG. 4 is a schematic view of the utility model taken along line B-B of FIG. 3;
1-ultrahigh-performance concrete outer shell, 2-vertical longitudinal bar, 3-oblique longitudinal bar, 4-inner stirrup, 5-outer stirrup, 6-concrete and 7-ultrahigh-performance concrete inner shell.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples.
As shown in fig. 1 to 4, a conical hollow concrete pier stud of a non-dismantling formwork comprises an ultra-high performance concrete outer shell 1 and an ultra-high performance concrete inner shell 7, wherein the ultra-high performance concrete outer shell 1 is of a hollow conical structure, the ultra-high performance concrete inner shell 7 is coaxially arranged in the ultra-high performance concrete outer shell, a steel reinforcement framework is sleeved outside the ultra-high performance concrete inner shell 7, and concrete 6 for encapsulating the steel reinforcement framework is arranged between the ultra-high performance concrete inner shell 7 and the ultra-high performance concrete outer shell 1.
Gaps are arranged between the steel bar framework and the ultra-high performance concrete inner shell 7 and between the steel bar framework and the ultra-high performance concrete outer shell 1.
The steel bar framework comprises vertical longitudinal bars 2 and oblique longitudinal bars 3, wherein the vertical longitudinal bars 2 are arranged at equal intervals along the circumferential direction, inner stirrups 4 are welded on the outer sides of the vertical longitudinal bars at equal intervals along the length direction and are arranged close to the ultra-high performance concrete inner shell 7, the oblique longitudinal bars 3 are arranged at equal intervals along the circumferential direction, outer stirrups 5 are welded on the outer sides of the vertical longitudinal bars at equal intervals along the length direction and are arranged close to the ultra-high performance concrete outer shell 1.
The inclination angle of the inclined longitudinal ribs 3 is consistent with that of the section of the ultra-high performance concrete shell 1.
Example 1
A construction method of a conical hollow concrete pier stud of a non-dismantling formwork comprises the following steps:
(1) Preparing structural size and materials, determining the height, width and length of the pier according to the design bearing capacity requirement, and determining the strength grade of concrete and the used steel bars; according to the design size requirement, manufacturing a conical ultra-high performance concrete outer shell 1 and an ultra-high performance concrete inner shell 7 in different places or factories;
(2) binding a steel bar framework: binding a steel bar framework inside the pier column in advance according to design requirements;
Firstly, hoisting a bound reinforcement cage, fixing the reinforcement cage on a specified position, and connecting the reinforcement cage with a foundation; selecting proper hoisting equipment according to the weight of the ultrahigh-performance concrete shell 1, hoisting the ultrahigh-performance concrete shell 1, sleeving the ultrahigh-performance concrete shell 1 on the outer side of the steel reinforcement framework, ensuring that a gap is reserved between the steel reinforcement framework and the ultrahigh-performance concrete shell 1, and fixing the lower part of the ultrahigh-performance concrete shell and a foundation; secondly, hoisting the ultra-high performance concrete inner shell 7, placing the ultra-high performance concrete inner shell on the inner side of the steel bar framework, ensuring that a gap is reserved between the steel bar framework and the ultra-high performance concrete inner shell 7, and fixing the lower part of the ultra-high performance concrete inner shell with the foundation; and finally, pouring concrete 6 in a gap between the ultrahigh-performance concrete outer shell 1 and the ultrahigh-performance concrete inner shell 7, and forming the conical hollow concrete pier column of the non-dismantling formwork after the concrete 6 reaches the design strength.
Example 2
A construction method of a conical hollow concrete pier stud of a non-dismantling formwork comprises the following steps:
(1) Preparing structural size and materials, determining the height, width and length of the pier according to the design bearing capacity requirement, and determining the strength grade of concrete and the used steel bars; according to the design size requirement, manufacturing a conical ultra-high performance concrete outer shell 1 and an ultra-high performance concrete inner shell 7 in different places or factories;
Firstly, selecting proper hoisting equipment according to the weight of the ultra-high performance concrete shell 1, hoisting the ultra-high performance concrete shell 1, fixing the lower part of the ultra-high performance concrete shell 1 with a foundation, and then binding a steel reinforcement framework in the ultra-high performance concrete shell and connecting the steel reinforcement framework with the foundation; secondly, hoisting the ultra-high performance concrete inner shell 7, and fixing the lower part of the ultra-high performance concrete inner shell with the foundation; and finally, pouring concrete 6 between the ultra-high performance concrete outer shell 1 and the ultra-high performance concrete inner shell 7 to form the conical hollow concrete pier stud without detaching the template.
Claims (4)
1. The conical hollow concrete pier column is characterized by comprising an ultrahigh-performance concrete outer shell and an ultrahigh-performance concrete inner shell, wherein the ultrahigh-performance concrete outer shell is of a hollow conical structure, the ultrahigh-performance concrete inner shell is coaxially arranged in the ultrahigh-performance concrete outer shell, a steel reinforcement framework is sleeved on the outer side of the ultrahigh-performance concrete inner shell, and concrete for packaging the steel reinforcement framework is arranged between the ultrahigh-performance concrete inner shell and the ultrahigh-performance concrete outer shell.
2. The conical hollow concrete pier stud of the disassembly-free template of claim 1, which is characterized in that: gaps are arranged between the steel bar framework and the ultra-high performance concrete inner shell and between the steel bar framework and the ultra-high performance concrete outer shell.
3. The conical hollow concrete pier stud of the disassembly-free template of claim 1, which is characterized in that: the steel bar framework comprises vertical longitudinal bars and oblique longitudinal bars, wherein the vertical longitudinal bars are arranged at equal intervals along the circumferential direction, inner stirrups are welded on the outer side of the steel bar framework at equal intervals along the length direction, the oblique longitudinal bars are arranged at equal intervals along the circumferential direction, and outer stirrups are welded on the outer side of the steel bar framework at equal intervals along the length direction.
4. The conical hollow concrete pier stud of the disassembly-free template of claim 3, which is characterized in that: the inclination angle of the inclined longitudinal ribs is consistent with that of the section of the ultra-high performance concrete shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220647945.2U CN216999268U (en) | 2022-03-24 | 2022-03-24 | Conical hollow concrete pier column of non-dismantling formwork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220647945.2U CN216999268U (en) | 2022-03-24 | 2022-03-24 | Conical hollow concrete pier column of non-dismantling formwork |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216999268U true CN216999268U (en) | 2022-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220647945.2U Active CN216999268U (en) | 2022-03-24 | 2022-03-24 | Conical hollow concrete pier column of non-dismantling formwork |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216999268U (en) |
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2022
- 2022-03-24 CN CN202220647945.2U patent/CN216999268U/en active Active
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