CN213571513U - Prefabricated assembling pier column - Google Patents
Prefabricated assembling pier column Download PDFInfo
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- CN213571513U CN213571513U CN202022301764.8U CN202022301764U CN213571513U CN 213571513 U CN213571513 U CN 213571513U CN 202022301764 U CN202022301764 U CN 202022301764U CN 213571513 U CN213571513 U CN 213571513U
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Abstract
The invention relates to a prefabricated assembled pier stud, which comprises a concrete pier stud, wherein the concrete pier stud comprises an upper concrete pier stud, a prefabricated steel component and a lower concrete pier stud which are sequentially connected and integrally poured, a plurality of preformed holes for the end parts of longitudinal main reinforcements of a reinforcement cage in the upper concrete pier stud and the lower concrete pier stud to pass through are uniformly distributed on the periphery of the upper end and the lower end of the prefabricated steel component, the end part of the longitudinal main reinforcement is sequentially provided with a backing plate and a nut from inside to outside, the end part of the longitudinal main reinforcement is anchored on the prefabricated steel component through the nut, grouting materials are poured between the prefabricated steel component and the upper concrete pier stud and between the prefabricated steel component and the lower concrete pier stud, the prefabricated assembled pier stud is connected with the steel component from bottom to top to realize the integration of the assembled pier stud, the upper pier stud and the lower pier stud can be prefabricated in advance and can be produced in batches, the site construction is simple and convenient, the construction efficiency is improved.
Description
Technical Field
The invention relates to a prefabricated assembled pier stud.
Background
At present, most construction modes of pier columns at the lower parts of bridges mainly adopt cast-in-place, but the construction modes still have some defects, such as many processes, requirements from pier column reinforcement binding, template installation, concrete pouring to maintenance are required for at least ten days, a large number of templates are required, concrete vibration is inconvenient, the field workload is large, and the construction progress cannot be guaranteed; the pier column concrete poured on site needs manual vibration, the compactness is low, the impermeability is poor, pier column reinforcing steel bars are easy to corrode, the thickness of a protective layer is not easy to control, and poor pouring quality can cause the appearance of the pier column to have quality defects such as color difference, water ripple, honeycomb pitted surface and crack generation; the site operation probably produces noise pollution to the surrounding environment and then influences the normal life of leading near resident, and raise dust and dust that give off can cause air pollution in the work progress reduces the air visibility in city, makes resident's health receive harm even, causes various common respiratory disease, produces a large amount of sewage and building rubbish simultaneously, if not handle in time, will cause serious influence to earth's surface quality of water and soil.
Aiming at various defects and shortcomings of the cast-in-situ pier stud construction, most problems can be effectively avoided by adopting prefabricated pier stud construction. The existing assembly type bridge pier assembly modes comprise post-tensioning prestress connection, grouting sleeve connection, friction self-locking connection, socket joint type connection and the like. At present, the connection between the pier columns mainly adopts a grouting sleeve connection mode, but the phenomena of grouting incompactness, grouting leakage, steel bar truncation or dislocation and the like often exist in the construction process due to foreign matters in the sleeve or irregular operation in grouting, so that the connection strength cannot be ensured, and finally the damages of steel bar pulling damage, grouting material cleavage damage, grouting material pulling damage, sleeve pulling fracture and the like are caused; in addition, the construction cost of the grouting sleeve is high, so that the engineering cost is increased in the construction of an assembly type building which needs a large number of grouting sleeve connections, in order to reduce the cost, the variety of grouting materials is stolen in part of projects, the observation hole of the grouting materials is artificially faked, the expensive grouting sleeve is replaced by a low-price counterfeit product, and the like, so that the quality potential hazard of the constructed assembly type building is caused, and even the quality accident is caused; meanwhile, whether the sleeve is full or not directly influences the shear bearing capacity and the shock resistance of the structure, so that the grouting fullness must be detected in order to ensure that the grouting compactness meets the standard requirement. However, the grouting sleeve structure is formed by alternating metal and nonmetal multilayer media, the mortar body is very thin in radial thickness, and most of the existing engineering detection methods cannot effectively detect the grouting material, so that in actual construction, the filling degree and grouting quality of the grouting material in the sleeve are often judged by detection means such as experience, ultrasound and rays, the empirical judgment has certain limitation, the ultrasonic detection is easily limited by a detection interface, the requirement on the arrangement of the positions of measuring points is high, the precision hardly meets the detection requirement, the radiation detection has radiation safety requirement on the site, the detection cost is high, and the comprehensive development is difficult, so that the existing grouting filling degree detection method has great limitation, and the safety and reliability of the connection of the assembly type building components are seriously affected.
Disclosure of Invention
In order to meet the requirements of standardization, high production efficiency, construction rapidity and the like of the prefabricated components for bridge industrialization, the invention provides a prefabricated assembled pier column with main reinforcements connected through steel components and a construction method thereof.
The prefabricated assembled pier column comprises an upper concrete pier column, a prefabricated steel component and a lower concrete pier column which are sequentially connected and poured into a whole, wherein a plurality of preformed holes for the end parts of longitudinal main reinforcements of a reinforcement cage in the upper concrete pier column and the lower concrete pier column to penetrate are uniformly distributed on the periphery of the upper end and the lower end of the prefabricated steel component, a base plate and a nut are sequentially sleeved at the end of each longitudinal main reinforcement from inside to outside, the end of each longitudinal main reinforcement is anchored on the prefabricated steel component through the nut, and grouting materials are poured between the prefabricated steel component and the upper concrete pier column as well as between the prefabricated steel component and the lower concrete pier column.
Further, prefabricated steel component is connected including two end plates of central line collineation and interval setting from top to bottom, and the preformed hole setting is connected through the radial connection riser of a plurality of circumference equipartitions between two upper and lower end plate outer ends at the end plate, radial connection riser and preformed hole crisscross setting.
Furthermore, the middle parts of the upper end plate and the lower end plate are connected through an inner stiffening ring which is collinear with the central line of the upper end plate and the lower end plate, and the inner stiffening ring is radially connected with the inner stiffening ring in the vertical plate.
Furthermore, the longitudinal main ribs in the upper concrete pier column and the longitudinal main ribs in the lower concrete pier column are arranged in a one-to-one correspondence mode, and the preformed holes in the upper end plate and the lower end plate are arranged in a one-to-one correspondence mode.
Further, the length of the steel bar of the longitudinal main reinforcement extending into the end plate of the steel member is not more than half of the height of the radial connecting vertical plate, and is not less than the sum of the thicknesses of the end plate of the steel member, the base plate and the nut.
Furthermore, the clear distance from the outer edge of the prefabricated steel component to the outer edge of the concrete pier column is not less than 40 mm.
Furthermore, the longitudinal main bar is a finish-rolled threaded steel bar.
Further, the grouting material is high-strength grouting concrete, common concrete, high-performance concrete, ultrahigh-performance concrete or steel fiber concrete.
Compared with the prior art, the invention has the following beneficial effects: simple structure, reasonable in design, be connected through vertical main muscle and steel member from bottom to top and become an organic whole, the connection problem between the pier stud festival section has been solved effectively, avoid adopting grout sleeve quality to be difficult to control, be difficult to the inspection scheduling problem, make the atress transmission between the pier stud more reasonable, realize assembled pier stud integration, the whole atress performance and the anti-seismic performance of assembled pier stud have been guaranteed, upper and lower festival section pier stud can be prefabricated and batch production in mill in advance, only need carry out a small amount of anchor connection and the cast-in-place work of grout that excels in at the scene, make the construction of assembling on the spot simple and easy convenient, thereby improve the efficiency of construction.
Drawings
The invention is further described with reference to the following figures.
FIG. 1 is a schematic longitudinal section of a prefabricated assembled pier stud;
FIG. 2 is a schematic longitudinal section of a prefabricated steel member without internal stiffening rings;
FIG. 3 is a schematic cross-sectional view of a prefabricated steel member without internal stiffeners;
FIG. 4 is a schematic longitudinal section of a prefabricated steel member provided with internal stiffening rings;
FIG. 5 is a schematic cross-sectional view of a prefabricated steel member provided with an inner stiffener ring.
In the figure: 1-placing concrete pier stud; 2, mounting a concrete pier column; 3-longitudinal main reinforcement; 4-hoop reinforcement; 5-prefabricating a steel member; 6-end plate; 7-connecting the vertical plate in the radial direction; 8-grouting material; 9-casting concrete in situ; 10-a cushion cap; 11-preparing holes; 12-a backing plate; 13-high-strength nut; 14-internal stiffening ring.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1-5, a prefabricated pier stud of assembling, including the concrete pier stud, the concrete pier stud is including connecting gradually and pouring integrative last concrete pier stud 1, prefabricated steel component 5, lower concrete pier stud 2, the preformed hole 11 that the tip that the circumference equipartition of lower extreme periphery had a plurality of confessions to go up the vertical main muscle 3 of the steel reinforcement cage in concrete pier stud, the lower concrete pier stud passed, and the end of vertical main muscle is from interior to exterior has set gradually the cover and is equipped with backing plate 12, nut 13, and the end of vertical main muscle is through the nut anchor on the prefabricated steel component, and grout material 8 has been pour between prefabricated steel component and last concrete pier stud and the lower concrete pier stud.
In this embodiment, cast-in-place concrete 9 is cast around the precast steel member.
In this embodiment, the steel reinforcement cage includes a plurality of vertical main muscle of circumference equipartition, and the steel reinforcement cage is provided with a plurality of hoop stirrup 4 from top to bottom interval outward, and the hoop stirrup cover is established on the steel reinforcement cage, and the hoop stirrup is fixed with the ligature of vertical main muscle.
In this embodiment, prefabricated steel component is connected including two end plates 6 of central line collineation and upper and lower interval setting, and the preformed hole setting is connected through the radial connection riser 7 of a plurality of circumference equipartitions between two upper and lower end plate outer ends at the end plate, radial connection riser and the crisscross setting of preformed hole.
In this embodiment, the middle parts of the upper end plate and the lower end plate are connected through the inner stiffening ring 14 which is collinear with the central line of the upper end plate and the lower end plate, and the inner stiffening ring is radially connected with the inner stiffening ring in the vertical plate.
In this embodiment, the cross sectional shape of end plate can be circular, square and rectangle, and interior stiffening ring is steel pipe or steel box that the steel sheet encloses, and end plate and radial connection riser welding, end plate, radial connection riser all with interior stiffening ring welding, welding adopt the penetration welding welded mode.
In this embodiment, go up the setting of the vertical main muscle one-to-one in the concrete pier stud and the lower concrete pier stud, the preformed hole one-to-one on upper end plate, the lower end plate sets up.
In this embodiment, the length of the steel bar of the longitudinal main reinforcement extending into the end plate of the steel member is not more than half of the height of the radial connecting vertical plate and is not less than the sum of the thicknesses of the end plate of the steel member, the backing plate and the nut.
In this embodiment, the clear distance from the outer edge of the precast steel member to the outer edge of the concrete pier is not less than 40 mm.
Furthermore, the longitudinal main bar is a finish-rolled threaded steel bar.
Further, the grouting material is high-strength grouting concrete, common concrete, high-performance concrete, ultrahigh-performance concrete or steel fiber concrete.
The construction method comprises the following steps:
(1) processing the prefabricated steel component: manufacturing radial connecting vertical plates and end plates according to the design size, arranging reserved holes in the positions, corresponding to the longitudinal main ribs, on the end plates, arranging the radial connecting vertical plates between the reserved holes, uniformly arranging the radial connecting vertical plates along the radial direction of the end plates and around the end plates, and performing fusion penetration welding on the connecting vertical plates and the end plates to form a steel member;
(2) manufacturing a lower concrete pier column reinforcement cage: penetrating the longitudinal main reinforcement through an end plate at the lower end of the steel member to a designed extension length, sequentially screwing a base plate and a nut into the end part of the longitudinal main reinforcement, ensuring that the longitudinal main reinforcement and the end plate at the lower end of the steel member are fastened together, and binding a hoop reinforcement outside the longitudinal main reinforcement to form a lower concrete pier column reinforcement cage;
(4) manufacturing an upper concrete pier stud reinforcement cage: installing the upper concrete pier column longitudinal main reinforcement on a positioning die, temporarily reinforcing the end part of the longitudinal main reinforcement and a steel plate die with a reserved hole, and binding a hoop reinforcement on the outer side of the longitudinal main reinforcement to form an upper concrete pier column reinforcement cage;
(5) manufacturing a lower section of the concrete pier column: erecting a reinforcement cage of the lower concrete pier stud from the plane, erecting a formwork according to the size of the prefabricated pier stud, pouring and maintaining the concrete, and removing the formwork after the strength of the concrete reaches the formwork removal strength;
(6) manufacturing an upper section of the concrete pier column: erecting the upper concrete pier stud reinforcement cage from the plane, erecting a formwork according to the size of the prefabricated pier stud, pouring and maintaining concrete, and removing the formwork after the strength of the concrete reaches the formwork removal strength;
(7) constructing the lower section of the concrete pier column: transporting the prefabricated concrete pier column to a construction site, and pouring and forming the lower section of the concrete pier column and the bearing platform 10 through vertical steel bar connection;
(8) segment assembling: the method comprises the following steps that longitudinal main reinforcements of an upper section of a concrete pier column extend into a preformed hole in an end plate at the upper end of a steel member of a lower section of the concrete pier column, a base plate and nuts are sequentially screwed into the end parts of the longitudinal main reinforcements, and the longitudinal main reinforcements and the steel member are guaranteed to be fastened together;
(9) sealing the steel member: formwork erecting is carried out according to the size of the steel member, high-strength grouting material sealing operation and maintenance are carried out, and formwork dismantling can be carried out after the strength of the grouting material reaches the formwork dismantling strength, so that the concrete pier columns are connected into a whole from bottom to top, and the construction of the prefabricated pier columns is completed.
In the step (1), an inner stiffening ring can be arranged in the radial connecting vertical plate, the center lines of the inner stiffening ring and the end plate are ensured to be collinear, and the inner stiffening ring and the end plate are welded.
If this patent discloses or refers to parts or structures that are fixedly connected to each other, the fixedly connected may be understood as: a detachable fixed connection (for example using a bolt or screw connection) can also be understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In the description of this patent, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the patent, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
The above-mentioned preferred embodiments, further illustrating the objects, technical solutions and advantages of the present invention, should be understood that the above-mentioned are only preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a pier stud is assembled in prefabrication, includes concrete pier stud, its characterized in that: concrete pier stud including connect gradually and pour integrative last concrete pier stud, prefabricated steel component, concrete pier stud down, the preformed hole that lower extreme periphery circumference equipartition has a plurality of confessions to go up the concrete pier stud, the tip of the vertical main muscle of the steel reinforcement cage in the concrete pier stud down passes on the prefabricated steel component, and the end of vertical main muscle is from interior to exterior has set gradually the cover and is equipped with backing plate, nut, and the end of vertical main muscle passes through the nut anchor on prefabricated steel component, and grout material has been pour between prefabricated steel component and last concrete pier stud and the lower concrete pier stud.
2. The prefabricated assembled pier stud of claim 1, wherein: the prefabricated steel component is connected and includes two end plates that the central line collineation set up with the interval from top to bottom, and the preformed hole setting is connected through the radial connection riser of a plurality of circumference equipartitions between two upper and lower end plate outer ends at the end plate, radial connection riser and preformed hole crisscross setting.
3. The prefabricated assembled pier stud of claim 2, wherein: the middle parts of the upper end plate and the lower end plate are connected through an inner stiffening ring collinear with the central line of the upper end plate and the lower end plate, and the upper end plate and the lower end plate are radially connected with the inner stiffening ring in the vertical plate.
4. The prefabricated assembled pier stud of claim 2, wherein: the longitudinal main ribs in the upper concrete pier column and the longitudinal main ribs in the lower concrete pier column are arranged in a one-to-one correspondence mode, and the preformed holes in the upper end plate and the lower end plate are arranged in a one-to-one correspondence mode.
5. The prefabricated assembled pier stud of claim 2, wherein: the length of the steel bar of the longitudinal main reinforcement extending into the end plate of the steel member is not more than half of the height of the radial connecting vertical plate, and is not less than the sum of the thicknesses of the end plate of the steel member, the base plate and the nut.
6. The prefabricated assembled pier stud of claim 1, wherein: the clear distance from the outer edge of the prefabricated steel member to the outer edge of the concrete pier is not less than 40 mm.
7. The prefabricated assembled pier stud of claim 1, wherein: the longitudinal main reinforcement is a finish-rolled twisted steel.
8. The prefabricated assembled pier stud of claim 1, wherein: the grouting material is high-strength grouting concrete, common concrete, high-performance concrete, ultrahigh-performance concrete or steel fiber concrete.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022301764.8U CN213571513U (en) | 2020-10-16 | 2020-10-16 | Prefabricated assembling pier column |
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| CN202022301764.8U CN213571513U (en) | 2020-10-16 | 2020-10-16 | Prefabricated assembling pier column |
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| CN213571513U true CN213571513U (en) | 2021-06-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112095455A (en) * | 2020-10-16 | 2020-12-18 | 福州大学 | Prefabricated assembled pier column and construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112095455A (en) * | 2020-10-16 | 2020-12-18 | 福州大学 | Prefabricated assembled pier column and construction method |
| CN112095455B (en) * | 2020-10-16 | 2024-06-07 | 福州大学 | Prefabricated assembled pier column and construction method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230519 Address after: 4-3, No.1 Xuefu Road, Xiazhu Township, Minqing County, Fuzhou City, Fujian Province, 350100 Patentee after: Fujian Guoheng Construction Engineering Co.,Ltd. Address before: Fuzhou University, No.2, wulongjiang North Avenue, Fuzhou University Town, Minhou County, Fuzhou City, Fujian Province Patentee before: FUZHOU University |
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| TR01 | Transfer of patent right |