CN218756957U - Quick mosaic structure of prefabricated bent cap and prefabricated pier - Google Patents
Quick mosaic structure of prefabricated bent cap and prefabricated pier Download PDFInfo
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- CN218756957U CN218756957U CN202223216039.6U CN202223216039U CN218756957U CN 218756957 U CN218756957 U CN 218756957U CN 202223216039 U CN202223216039 U CN 202223216039U CN 218756957 U CN218756957 U CN 218756957U
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Abstract
The utility model relates to a quick mosaic structure of prefabricated bent cap and prefabricated pier, including bent cap, prefabricated pier and the cushion cap that from top to bottom sets gradually, between bent cap and the prefabricated pier, all be equipped with tenon fourth of the twelve earthly branches formula connection structure between prefabricated pier and the cushion cap, prefabricated pier upper portion, cushion cap upper portion are equipped with pre-buried little steel pipe and pre-buried grout bellows respectively, bent cap lower part, prefabricated pier lower part are equipped with and are used for extending to the interior exposed reinforcing bar that exposes of pre-buried grout bellows or pre-buried grout bellows. The utility model has reasonable design and convenient use, can directly play the role of restraining and positioning the precast pier and the bent cap during construction, prevent the pier from tilting during construction and improve the construction safety; the small pre-buried steel pipes on the top surface of the prefabricated pier and the pre-buried corrugated pipes on the top surface of the bearing platform can be directly poured from the top surface of the prefabricated pier and the top surface of the bearing platform during construction, sequential grouting is not needed, and the construction efficiency is improved; the plumpness of the ultrahigh-performance mortar material filled in the pipe can be directly checked by naked eyes, so that the construction quality controllability is improved.
Description
Technical Field
The utility model relates to a structure is assembled fast to prefabricated bent cap and thin wall mound.
Background
The prefabricated assembled bridge piers are widely applied to bridge engineering at home and abroad. The spliced pier connected by grouting sleeves is commonly adopted in part of bridges in China, grouting needs to be performed on each grouting sleeve in sequence during construction, the grouting quantity is large, the construction efficiency is low, the grouting compactness of the sleeves is closely related to the connection strength of the sleeves, the grouting compactness of the sleeves is difficult to detect due to the shielding effect of metal sleeves such as steel sleeves and the like on electromagnetic signals, the grouting construction quality in the sleeves is difficult to detect and control, and potential safety hazards exist. In addition, the splicing seams of the prefabricated bridge pier are mostly flat seams, measures are needed to prevent the prefabricated bridge pier from suddenly turning on the side, opening and closing or dislocation inevitably occur under the action of horizontal load, and the reinforcing steel bars at the position are possibly corroded due to the fact that the reinforcing steel bars are exposed to the atmosphere and rainwater for a long time. For the construction between the pier and the capping beam, the traditional construction method needs to set up a support, and the concrete curing time is long, so that the construction efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model discloses improve above-mentioned problem, promptly the to-be-solved technical problem of the utility model is to provide a prefabricated bent cap and the quick mosaic structure of prefabricated pier, convenient to use and high-efficient can directly play restraint and positioning action to prefabricated pier and bent cap during the construction, prevent to take place to heel during the construction, improved efficiency of construction, construction quality's controllability and security.
The utility model discloses a constitute like this, it is including the bent cap, prefabricated pier and the cushion cap that from top to bottom set gradually, between bent cap and the prefabricated pier, all be equipped with tenon fourth of the twelve earthly branches formula connection structure between prefabricated pier and the cushion cap, prefabricated pier upper portion, cushion cap upper portion are equipped with pre-buried little steel pipe and pre-buried grout bellows respectively, bent cap lower part, prefabricated pier lower part are equipped with and are used for extending to the interior reinforcing bar that exposes of pre-buried grout bellows or pre-buried grout bellows.
Furthermore, grout pressing holes and grout outlet holes for pouring and filling gaps between the tenon-and-mortise type connecting structures are formed inside the prefabricated bridge pier and inside the bent cap.
Furthermore, gaps among the mortise and tenon type connecting structures, the inside of the embedded small steel pipes and the inside of the embedded grouting corrugated pipe are all provided with ultrahigh-performance mortar layers.
Furthermore, mortise and tenon type connection structure is including setting up in the concrete filled steel tube tenon of prefabricated pier top or cushion cap top, bent cap bottom or prefabricated pier bottom are provided with and are used for the recess with concrete filled steel tube tenon matched with.
Furthermore, short steel bars are welded on the outer sides of the steel pipe concrete tenons.
Furthermore, pier shaft reinforcing steel bars and stirrups are arranged inside the prefabricated pier.
Furthermore, the bottom of the bent cap and the upper part of the bearing platform are both provided with common concrete sections, the groove at the bottom of the bent cap is arranged in the middle of the common concrete section at the bottom of the bent cap, and the steel pipe concrete tenon above the bearing platform is arranged in the middle of the common concrete section at the upper part of the bearing platform.
Furthermore, carbon fiber cloth is arranged outside the exposed reinforcing steel bars.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) During assembly construction, the small embedded steel pipes on the top surface of the pier and the UHPM material plumpness filled in the embedded corrugated pipes on the top surface of the bearing platform can be directly checked by naked eyes, and construction quality controllability is improved. Meanwhile, compared with the traditional grouting sleeve connecting prefabricated spliced pier, the grouting frequency is greatly reduced, the construction efficiency is improved, and meanwhile, the construction management pressure is reduced;
(2) The prefabricated pier body stress steel bars near the splicing seams are wrapped by CFRP, so that the pier stress steel bars can be effectively protected, and the anti-corrosion capability of the pier is improved;
(3) Short steel bars are welded around the steel pipe concrete tenon to provide gaps for mortar, so that mortar pressing is facilitated, and the bonding effect of an interface is improved;
(4) The periphery of the bearing platform is provided with a connecting structure of grouting corrugated pipes, exposed reinforcing steel bars at the bottom of the prefabricated pier are connected with the bearing platform into a whole, the function of energy consumption reinforcing steel bars can be achieved under the action of an earthquake, pier top displacement is reduced, and meanwhile, the UHPM is adopted to effectively bond the interface between the concrete of the side wall of the groove at the bottom of the prefabricated pier and the steel pipe concrete tenon at the top surface of the bearing platform, so that the connection between the prefabricated pier and the bearing platform is strengthened, and the integrity of the pier is improved;
(5) The concrete filled steel tube tenon on the top surface of the bearing platform and the mortise-tenon type connection structure formed by the groove at the bottom of the prefabricated bridge pier, the mortise-tenon type connection structure formed by the concrete filled steel tube tenon on the top surface of the prefabricated bridge pier and the groove at the bottom of the capping beam, short steel bars are welded around the concrete filled steel tube tenon, the prefabricated bridge pier and the capping beam can be directly restrained and positioned during construction, the side inclination of the prefabricated bridge pier and the capping beam during construction is prevented, the construction safety degree is improved, the horizontal shearing dislocation of the spliced bridge pier possibly occurring at the splicing seam can be eliminated by the concrete filled steel tube tenon, and the shearing resistance of the spliced joint can be improved.
Drawings
Fig. 1 is a first schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of the present invention;
fig. 3 is a plan view of a pier body of a prefabricated pier according to an embodiment of the present invention;
FIG. 4 is a partial enlarged view of the splice seam according to the embodiment of the present invention;
in the figure: 1-grouting holes; 2-slurry outlet; 3-steel pipe concrete tenon; 4-embedding grouting corrugated pipes; 5-short reinforcing steel bars; 6-pier shaft steel bars; 7-stirrup; 8-Ultra High Performance Mortar (UHPM); 9-prefabricating a pier; 10-a cushion cap; 11-carbon fiber cloth; 12-a capping beam; 13-pre-burying the small steel pipes.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example (b): as shown in 1~4, in the embodiment, provide a quick mosaic structure of prefabricated bent cap and prefabricated pier, including bent cap 12, prefabricated pier 9 and cushion cap 10 that from top to bottom set gradually, all be equipped with mortise and tenon joint structure between bent cap and the prefabricated pier, between prefabricated pier and the cushion cap, prefabricated pier upper portion, cushion cap upper portion are equipped with pre-buried little steel pipe 13 and pre-buried grout bellows 4 respectively, bent cap lower part, prefabricated pier lower part are equipped with and are used for extending to the exposed reinforcing bar in pre-buried grout bellows or the pre-buried grout bellows.
The small pre-buried steel pipes on the top surface of the prefabricated pier and the pre-buried corrugated pipes on the top surface of the bearing platform can be directly poured from the top surface of the prefabricated pier and the top surface of the bearing platform during construction, grouting is not needed in sequence, the fullness of ultra-high performance mortar (UHPM) materials filled in the small pre-buried steel pipes on the top surface of the pier and the pre-buried corrugated pipes on the top surface of the bearing platform can be directly checked through naked eyes, and construction quality controllability is improved. Meanwhile, compared with the traditional grouting sleeve connection prefabricated assembled pier, the grouting frequency is greatly reduced, the construction efficiency is improved, and meanwhile, the pressure of construction management is reduced.
In addition, the grouting corrugated pipes are arranged on the periphery of the bearing platform, exposed reinforcing steel bars at the bottom of the prefabricated pier can be connected with the bearing platform into a whole, the effect of energy-consuming reinforcing steel bars can be achieved under the earthquake effect, pier top displacement is reduced, and meanwhile UHPM is adopted to effectively bond the concrete of the side wall of the groove at the bottom of the prefabricated pier and the interface between the steel pipe concrete tenon at the top surface of the bearing platform, so that the connection between the prefabricated pier and the bearing platform is enhanced, and the integrity of the pier is improved.
In this embodiment, grout pressing holes and grout outlet holes for pouring and filling gaps between the mortise-tenon type connecting structures are formed in the prefabricated pier and the bent cap; the gaps among the grout pressing holes, the grout outlet holes and the mortise-tenon type connecting structures are communicated, and the grout pressing holes and the grout outlet holes are communicated with the interior of the prefabricated bridge pier or the exterior of the bent cap.
The grout pressing hole positioned in the cover beam is transversely arranged at the side part of the groove of the cover beam, and the grout outlet hole positioned in the cover beam is vertically arranged at the upper part of the groove of the cover beam; the grouting holes in the prefabricated bridge piers are transversely arranged on the side portions of the grooves, and the grout outlet holes in the prefabricated bridge piers are obliquely arranged on the upper portions of the grooves and extend towards the outer portions of the lateral sides of the prefabricated bridge piers.
In this embodiment, the clearance between mortise-tenon joint formula connection structure, inside the pre-buried little steel pipe and the pre-buried inside grout corrugated pipe all are equipped with the ultra high performance mortar layer. The ultra-high performance mortar layer is formed by pouring ultra-high performance mortar 8 to the pre-buried small steel pipe and the pre-buried grouting corrugated pipe.
In this embodiment, mortise-tenon joint formula joint construction is including setting up in the concrete filled steel tube tenon 3 of prefabricated pier top or cushion cap top, bent cap bottom or prefabricated pier bottom are provided with and are used for the recess with concrete filled steel tube tenon matched with.
short reinforcing bars are welded around the steel pipe concrete tenon, gaps can be provided for mortar, when grouting is facilitated, the bonding effect of an interface is improved, the prefabricated pier and the capping beam can be directly restrained and positioned during construction, heeling can be prevented during construction, the construction safety is improved, the horizontal shearing dislocation of the assembled pier possibly occurring in the splicing seam can be eliminated through the steel pipe concrete tenon, and the shearing resistance of the splicing joint can be improved.
In the embodiment, pier body steel bars 6 and stirrups 7 are arranged inside the prefabricated pier; the exposed reinforcing steel bars are the portions of the pier body reinforcing steel bars extending downwards to the inside of the prefabricated pier.
The cover beam is internally provided with reinforcing steel bars which are staggered transversely and longitudinally, and the exposed reinforcing steel bars are the parts of the parts which extend downwards out of the cover beam.
In this embodiment, the bent cap bottom, cushion cap upper portion all are equipped with ordinary concrete section, and the recess setting of bent cap bottom is in the ordinary concrete section middle part that is located the bent cap bottom, and the steel pipe concrete tenon that is located the cushion cap top sets up in the ordinary concrete section middle part that is located the cushion cap upper portion.
The pre-buried grouting corrugated pipe is positioned in the common concrete section above the bearing platform, the upper end surface of the pre-buried grouting corrugated pipe is flush with the upper surface of the common concrete section, and one section of the lower end of the pre-buried grouting corrugated pipe extends into the bearing platform.
In this embodiment, the exposed steel bar is externally provided with a carbon fiber cloth 11. Preferably, the exposed reinforcing steel bars of the prefabricated pier body near the splicing seams are wrapped by carbon fiber Cloth (CFRP), and the exposed reinforcing steel bars are stressed reinforcing steel bars, so that the stressed reinforcing steel bars of the pier can be effectively protected, and the anti-corrosion capability of the pier is improved.
In this embodiment, the construction steps are as follows:
(1) Fixing the bearing platform 10, and filling the embedded corrugated pipe 4 on the top surface of the bearing platform with ultrahigh-performance mortar;
(2) Inserting exposed reinforcing steel bars exposed by pier body reinforcing steel bars on a prefabricated pier 9 into an embedded grouting corrugated pipe 4 on the top of a bearing platform 10, and inserting a steel pipe concrete tenon 3 on the top of the bearing platform 10 into a groove at the bottom of the prefabricated pier 9;
(3) After the prefabricated pier 9 and the bearing platform 10 are fixed, grouting is carried out from the grouting hole 1 by adopting ultra-high performance mortar, and a gap between the steel pipe concrete tenon 3 and the prefabricated pier 9 is filled until the ultra-high performance mortar 8 overflows from the mortar outlet hole 2;
(4) After the prefabricated bridge pier 9 and the bearing platform 10 are assembled, filling the embedded small steel pipes 13 on the top surface of the prefabricated bridge pier 9 with the ultrahigh-performance mortar 8;
(5) Inserting the exposed steel bars at the bottom of the bent cap 12 into the embedded small steel tubes 13 on the top surface of the prefabricated pier 9, and inserting the steel tube concrete tenons 3 on the top surface of the embedded pier 9 into the grooves at the bottom of the bent cap 12;
(6) After the prefabricated pier 9 and the bent cap 12 are fixed, grouting is carried out from the grouting hole 1 by adopting the ultrahigh-performance mortar 8, and gaps between the steel pipe concrete tenons 3 and the bent cap 12 are filled until the ultrahigh-performance mortar 8 overflows from the mortar outlet hole 2.
Any technical solution disclosed in the present invention is, unless otherwise stated, disclosed a numerical range if it is disclosed, and the disclosed numerical range is a preferred numerical range, and any person skilled in the art should understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Because numerical value is more, can't be exhaustive, so the utility model discloses just disclose some numerical values with the illustration the technical scheme of the utility model to, the numerical value that the aforesaid was enumerated should not constitute right the utility model discloses create the restriction of protection scope.
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.
Also, above-mentioned the utility model discloses if disclose or related to mutually fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also 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 addition, the terms used in any aspect of the present disclosure as described above to indicate positional relationships or shapes include similar, analogous, or approximate states or shapes unless otherwise stated.
The utility model provides an arbitrary part both can be formed by a plurality of solitary component parts equipment, also can be for the solitary part that the integrated into one piece technology made out.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (8)
1. The utility model provides a quick mosaic structure of prefabricated bent cap and prefabricated pier, its characterized in that, is including bent cap, prefabricated pier and the cushion cap that from top to bottom sets gradually, between bent cap and the prefabricated pier, all be equipped with tenon fourth of the twelve earthly branches formula connection structure between prefabricated pier and the cushion cap, prefabricated pier upper portion, cushion cap upper portion are equipped with pre-buried little steel pipe and pre-buried grout bellows respectively, bent cap lower part, prefabricated pier lower part are equipped with and are used for extending to the interior exposed reinforcing bar that exposes in pre-buried grout bellows or the pre-buried grout bellows.
2. The rapid splicing structure of the prefabricated capping beam and the prefabricated pier is characterized in that grouting holes and grout outlet holes for pouring and filling gaps among the mortise-tenon type connecting structures are formed in the prefabricated pier and the capping beam.
3. The rapid splicing structure of the prefabricated capping beam and the prefabricated pier according to claim 1, wherein ultrahigh-performance mortar layers are arranged in gaps among the mortise and tenon type connecting structures, the interiors of the embedded small steel pipes and the interiors of the embedded grouting corrugated pipes.
4. The rapid splicing structure of the precast capping beam and the precast pier according to any one of claims 1 to 3, wherein the mortise and tenon type connecting structure comprises a concrete filled steel tube tenon arranged on the top of the precast pier or above a bearing platform, and the bottom of the capping beam or the bottom of the precast pier is provided with a groove for matching with the concrete filled steel tube tenon.
5. The rapid splicing structure of the precast capping beam and the precast pier according to claim 4, wherein short steel bars are welded outside the concrete filled steel tube tenon.
6. The rapid splicing structure of the precast capping beam and the precast pier according to claim 4, wherein pier body reinforcing steel bars and stirrups are arranged inside the precast pier.
7. The rapid splicing structure of the precast capping beam and the precast pier according to claim 4, wherein the bottom of the capping beam and the upper part of the bearing platform are provided with common concrete sections, the groove at the bottom of the capping beam is arranged in the middle of the common concrete section at the bottom of the capping beam, and the steel pipe concrete tenon above the bearing platform is arranged in the middle of the common concrete section at the upper part of the bearing platform.
8. The rapid splicing structure of the precast capping beam and the precast pier according to claim 1, wherein carbon fiber cloth is disposed outside the exposed reinforcing steel bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223216039.6U CN218756957U (en) | 2022-12-02 | 2022-12-02 | Quick mosaic structure of prefabricated bent cap and prefabricated pier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223216039.6U CN218756957U (en) | 2022-12-02 | 2022-12-02 | Quick mosaic structure of prefabricated bent cap and prefabricated pier |
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| CN218756957U true CN218756957U (en) | 2023-03-28 |
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| CN202223216039.6U Active CN218756957U (en) | 2022-12-02 | 2022-12-02 | Quick mosaic structure of prefabricated bent cap and prefabricated pier |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116575317A (en) * | 2023-07-10 | 2023-08-11 | 湖南大学 | Connection structure and connection method of capping beam and bridge pier |
| CN116876887A (en) * | 2023-09-07 | 2023-10-13 | 南京工业大学 | Frame reinforcing structure based on precast concrete wallboard and reinforcing transformation method |
-
2022
- 2022-12-02 CN CN202223216039.6U patent/CN218756957U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116575317A (en) * | 2023-07-10 | 2023-08-11 | 湖南大学 | Connection structure and connection method of capping beam and bridge pier |
| CN116876887A (en) * | 2023-09-07 | 2023-10-13 | 南京工业大学 | Frame reinforcing structure based on precast concrete wallboard and reinforcing transformation method |
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