CN214695125U - UHPC shell energy-absorbing slow-release bridge pier - Google Patents
UHPC shell energy-absorbing slow-release bridge pier Download PDFInfo
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- CN214695125U CN214695125U CN202023151178.6U CN202023151178U CN214695125U CN 214695125 U CN214695125 U CN 214695125U CN 202023151178 U CN202023151178 U CN 202023151178U CN 214695125 U CN214695125 U CN 214695125U
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Abstract
The utility model discloses a UHPC shell energy-absorbing slow-release pier, including the pier stud and enclosing UHPC shell and the elasticity cavity module of closing in the periphery of pier stud, the internal diameter of UHPC shell is greater than the diameter of pier stud, elasticity cavity module sets up between UHPC shell and pier stud; the UHPC shell comprises at least two UHPC single bodies, two adjacent UHPC single bodies are closely spliced through a connecting structure of steps or a connecting structure of mortise and tenon arranged on the vertical side surface, and the connecting structures of the two adjacent UHPC single bodies are fixedly connected through a fixing piece; the inside of elasticity hollow module is provided with the cavity, and the top side surface of elasticity hollow module is provided with a plurality of through-holes that communicate with the cavity, has filled liquid in the cavity. The utility model discloses a UHPC casing adopts the ultra high performance concrete to make, has fine resistance to compression and shock resistance, has poured liquid in the elasticity cavity module, can absorb the energy of striking, plays dual guard action to the pier.
Description
Technical Field
The utility model belongs to the technical field of the bridge, specifically speaking, the utility model relates to a UHPC casing energy-absorbing slowly-releasing pier.
Background
China has built a large number of highway main line bridges, and most of the highway main line bridges belong to fabricated structural bridges. After the concrete bridge piers are manufactured, the load of the highway bridge becomes increasingly heavy along with the increasing traffic flow. The collision of vehicle in the traffic accident can be received to the pier in using, causes the damage of different degrees to the structure of pier for the condition of fracture, damage and infiltration appears in the pier, has destroyed the wholeness and the durability of pier, has weakened the security performance of the normal operation of this type of bridge, has shortened life, has increased the maintenance cost. In the prior art, materials such as rubber pads are enclosed at the periphery of the pier stud to serve as an anti-collision protection device, and the schemes have the following defects: firstly, although the rubber pad can play a certain role in buffering, the rubber pad has a small role in buffering, cannot effectively release energy when being impacted, easily transmits the energy when being impacted by a large truck to an internal pier, and has insufficient protection effect on the pier; secondly, the rubber pad has insufficient durability, is easy to be damaged during impact, and needs to be reinstalled once being damaged, so that the cost is high. The ultra-high performance concrete (UHPC) is a novel cement-based material with ultra-high strength, ultra-high toughness, ultra-durability and less shrinkage and creep, and is a new direction for future development of civil engineering. If the UHPC is applied to a protection device for a pier, the durability and the service life can be greatly improved.
In summary, it is urgently needed to provide a UHPC shell energy-absorbing slow-release pier, which solves the technical problems of limited protective effect, insufficient durability, high cost and the like of a pier collision protection device in the prior art on the pier.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the UHPC shell energy-absorbing slow-release bridge pier solves the technical problems that a bridge pier anti-collision protection device in the prior art has limited protection effect on the bridge pier, is not enough in durability, is high in cost and the like.
In order to realize the purpose, the utility model discloses the technical scheme who takes does:
a UHPC shell energy-absorbing slow-release bridge pier comprises a bridge pier column, a UHPC shell and an elastic hollow module, wherein the UHPC shell surrounds the periphery of the bridge pier column, the inner diameter of the UHPC shell is larger than the diameter of the bridge pier column, and the elastic hollow module is arranged between the UHPC shell and the bridge pier column; the UHPC shell comprises at least two UHPC single bodies, the two adjacent UHPC single bodies are connected in a close splicing manner through a connecting structure of steps or a connecting structure of mortise and tenon arranged on the vertical side surface, and the connecting structures of the two adjacent UHPC single bodies are fixedly connected through a fixing piece; the elastic hollow module is characterized in that a cavity is formed in the elastic hollow module, a plurality of through holes communicated with the cavity are formed in the surface of the top side of the elastic hollow module, and liquid is filled in the cavity.
According to the scheme, the elastic hollow module and the UHPC shell are sequentially enclosed at the periphery of the bridge pier column to form a novel bridge pier structure, at least two UHPC single bodies are connected in a close-fitting manner to form the UHPC shell, the UHPC single bodies with different sizes can be designed according to different bridge pier columns, and the installation is convenient; the ultra-high performance concrete is adopted for manufacturing, the strength and the durability of the UHPC shell are high, and the UHPC shell plays a good role in protecting a pier column structure. An elastic hollow module is arranged between the UHPC shell and the pier column, and a cavity of the elastic hollow module is filled with liquid. When a vehicle impacts the UHPC shell, the UHPC shell has good compression resistance and impact resistance, the UHPC shell transmits energy to the elastic hollow module after being impacted, one side of the elastic hollow module is elastic and can play a certain role in buffering, and the other side of the elastic hollow module is internally provided with a cavity so as to increase the deformation space of the elastic hollow module; and the liquid filled in the cavity of the elastic hollow module can absorb certain energy, and the liquid can flow out of the through hole after being extruded, so that the effect of absorbing and dispersing the impacted energy is achieved. In addition, in the using process, the elastic hollow module and the liquid can expand with heat and contract with cold, and the through hole can also form an outlet for the evaporation of the liquid.
On the basis of the above embodiment, in another improved embodiment, the number of the UHPC housings and the number of the elastic hollow modules are at least two, and at least two of the UHPC housings and at least two of the elastic hollow modules are sequentially arranged at intervals in the horizontal direction. Therefore, the UHPC shell and the elastic hollow module form a protective shell, and the protective shell is arranged in the protective shell to form at least two layers of protection for the pier columns; when the protective shell on the outermost layer is damaged by vehicle impact, the protective shell on the inner layer can further continuously protect the pier columns.
On the basis of the above embodiment, in another improved embodiment, the elastic hollow module close to the pier stud is an inner side elastic hollow module, the inner side elastic hollow module and the energy dissipation assembly are further arranged between the pier studs, the energy dissipation assembly comprises a positioning plate and an energy dissipation plate, the positioning plate is tightly attached to the inner side elastic hollow module in the vertical direction, the energy dissipation plate is an arc-shaped steel plate, and the arc-shaped steel plate is arranged at the positioning plate and the reserved space between the pier studs. With the arrangement, after the UHPC shell and the elastic hollow module are impacted, if the impact kinetic energy is large, the UHPC shell and the elastic hollow module can not finish the damage and release of the impact kinetic energy, and the locating plate and the energy dissipation plate on the inner side of the elastic hollow module can be further extruded. The energy dissipation plate is an arc-shaped steel plate, so that the energy dissipation plate can deform when being extruded, thereby absorbing a part of kinetic energy and releasing energy in the deformation process. More perfect protection can be formed to pier cylindricality through setting up power consumption subassembly.
On the basis of the above embodiment, in another improved embodiment, the arc-shaped steel plate is in an initial state of not deforming when being arranged at a reserved interval between the positioning plate and the pier column. Because the arc steel sheet is initial state, does not receive external effort, consequently the arc steel sheet can not become pressure to the pier column, can not destroy the surface integrality of pier column. When the arc-shaped steel plate is subjected to the extrusion force, energy can be released through deformation.
On the basis of the above embodiment, in another improved embodiment, the connection structure of the steps is a step-shaped notch arranged on two vertical side surfaces of the UHPC single body, and the step-shaped notches of two adjacent UHPC single bodies are matched with each other. By the arrangement, when two UHPC monomers are spliced on site, the splicing is simple and convenient, and the two UHPC monomers are not easy to separate after being spliced and fixed.
On the basis of the above embodiment, in another improved embodiment, the mortise and tenon connection structure is grooves or protrusions arranged on two vertical side surfaces of the UHPC single bodies, and the grooves and protrusions of two adjacent UHPC single bodies are matched with each other. According to the arrangement, when the two UHPC monomers are spliced on site, the bulge of one UHPC monomer is embedded into the groove of the other UHPC monomer, the installation is simple and convenient, and the two UHPC monomers are not easy to separate after being spliced and fixed.
On the basis of the above embodiment, in another improved embodiment, the width of the cavity is greater than the width of the UHPC shell, the liquid is water, and the filling capacity of the liquid is equal to or greater than half the volume of the cavity. Through pouring water in the cavity of elasticity hollow module, the cost of water is lower, and the source is wider, easily supplements in to the cavity through the through-hole after the evaporation.
On the basis of the above embodiment, in another modified embodiment, the shape of the UHPC monomer and the elastic hollow module is matched with that of the abutment column. By the arrangement, the UHPC monomer and the elastic hollow module which are matched with each other can be produced according to the shapes of different bridge piers, and the UHPC monomer and the elastic hollow module are assembled on a construction site.
On the basis of the above embodiment, in another improved embodiment, the fixing member is a high-strength bolt or a bolt and a nut, and a matching fixing hole is provided on the connection structure of the step or the connection structure of the mortise and tenon. By the arrangement, the two UHPC monomers can be fixedly connected by inserting the high-strength bolt or screw into the fixing hole of the two adjacent UHPC monomers on the construction site.
On the basis of the above embodiment, in another improved embodiment, the outer side surface of the UHPC monomer, which is far away from the elastic hollow module, is further provided with an antirust layer, and the antirust layer is integrally formed with the UHPC monomer. By means of the arrangement, the durability and the service life of the whole protection device can be further improved.
On the basis of the above embodiment, in another modified embodiment, the elastic hollow module is made of rubber or polyester elastomer or acryl-based elastomer or vinyl-based elastomer or fluorine/silicon elastomer. The elastic hollow module is made of materials such as rubber, on one hand, the elastic hollow module is ensured to have certain elasticity, and can play an effective role in buffering when encountering impact; on the other hand, the elastic hollow module can be made of materials such as recycled rubber and the like, so that the cost is low and the environment is protected.
The technical scheme of the utility model the beneficial technological effect who gains is:
the UHPC shell of the utility model is made of ultra-high performance concrete, the strength of the UHPC shell is higher than that of a concrete bridge pier column, and the UHPC shell plays a good role in protecting the structure of the bridge pier column; when a vehicle impacts the UHPC shell, the UHPC shell has good compression resistance and impact resistance, the UHPC shell transmits energy to the elastic hollow module after being impacted, and the elastic hollow module has elasticity and can play a certain buffering role; and the liquid filled in the cavity of the elastic hollow module can absorb certain energy, and the liquid can flow out of the through hole after being extruded, so that the effect of absorbing and dispersing the impacted energy is achieved.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation.
Fig. 1 is a top view of a UHPC shell energy-absorbing slow-release pier in example 1;
FIG. 2 is a vertical cross-sectional view of FIG. 1;
FIG. 3 is a plan view of a UHPC shell energy-absorbing slow-release pier in example 2 (the part of a pier column higher than an anti-collision protection device is cut off);
FIG. 4 is a vertical sectional view of a UHPC shell energy-absorbing slow-release pier in example 2;
FIG. 5 is a cross sectional view of a UHPC shell energy-absorbing slow-release pier in the horizontal direction in example 3;
fig. 6 is a cross-sectional view of a UHPC shell energy-absorbing slow-release pier in the horizontal direction in example 4.
Reference numerals: 1-UHPC shell, 101-UHPC monomer, 102-step-shaped notch, 2-elastic hollow module, 201-through hole, 202-cavity, 203-water, 3-fixing piece, 4-pier column, 5-positioning plate and 6-energy dissipation plate.
Detailed Description
The present invention will be described in detail with reference to the drawings, which are provided for illustrative and explanatory purposes only and should not be construed as limiting the scope of the present invention in any way. Furthermore, features from embodiments in this document and from different embodiments may be combined accordingly by a person skilled in the art from the description in this document.
Example 1
Referring to the schematic diagrams of fig. 1 and fig. 2, the UHPC shell energy-absorbing slow-release bridge pier of the present embodiment includes a UHPC shell 1 surrounding the periphery of a bridge pier column 4, and an elastic hollow module 2, wherein the inner diameter of the UHPC shell 1 is greater than the diameter of the bridge pier column 4, and the elastic hollow module 2 is disposed between the UHPC shell 1 and the bridge pier column 4; the UHPC shell 1 comprises at least two UHPC single bodies 101, the two adjacent UHPC single bodies 101 are connected in a close splicing manner through a connecting structure of steps or a mortise and tenon connecting structure arranged on the vertical side surface, and the connecting structures of the two adjacent UHPC single bodies 101 are fixedly connected through a fixing piece 3; the elastic hollow module 2 is internally provided with a cavity 202, the top surface of the elastic hollow module 2 is provided with a plurality of through holes 201 communicated with the cavity 202, and the cavity 202 is filled with liquid.
In the scheme, the elastic hollow module 2 and the UHPC shell 1 are sequentially enclosed at the periphery of the pier column 4 to form the UHPC shell energy-absorbing slow-release pier, at least two UHPC monomers 101 are closely spliced to form the UHPC shell 1, the UHPC monomers 101 with different sizes can be designed according to different pier columns 4, and the installation is convenient; the UHPC shell is made of ultra-high performance concrete, the UHPC shell 1 is high in strength and durability, and the structure of the pier column 4 is well protected. An elastic hollow module 2 is placed between the UHPC shell 1 and the pier stud 4, and a cavity 202 of the elastic hollow module 2 is filled with a liquid. When a vehicle impacts the UHPC shell 1, the UHPC shell 1 has good compression resistance and impact resistance, the UHPC shell 1 transmits energy to the elastic hollow module 2 after being impacted, one side of the elastic hollow module 2 has elasticity and can play a certain role in buffering, and the other side is internally provided with a cavity 202, so that the deformation space of the elastic hollow module 2 is increased; and the liquid filled in the cavity 202 of the elastic hollow module 2 can absorb certain energy, and the liquid can flow out from the through hole 201 after being squeezed, so that the function of absorbing and dispersing the impacted energy is achieved. In addition, the elastic hollow module 2 and the liquid can expand with heat and contract with cold during use, and the through hole 201 can form an outlet for the liquid to evaporate.
Referring to the schematic diagram of fig. 1, in this embodiment, the connection structure of the steps is a step-shaped notch 102 disposed on two vertical side surfaces of the UHPC single units 101, and the step-shaped notches 102 of two adjacent UHPC single units 101 are matched with each other. With the arrangement, when the two UHPC single bodies 101 are spliced on site, the splicing is simple and convenient, and the two UHPC single bodies are not easy to separate after being spliced and fixed.
In other embodiments, the mortise and tenon connection structure is grooves or protrusions arranged on two vertical side surfaces of the UHPC single bodies 101, and the grooves and protrusions of two adjacent UHPC single bodies 101 are matched with each other. By the arrangement, when the two UHPC single bodies 101 are spliced on site, the bulge of one UHPC single body 101 is embedded into the groove of the other UHPC single body 101, the installation is simple and convenient, and the two UHPC single bodies are not easy to separate after being spliced and fixed.
Referring to the schematic of fig. 2, in this embodiment, the width of the cavity 202 is greater than the width of the UHPC housing 1, the liquid is water 203, and the filling capacity of the liquid is equal to or greater than half the volume of the cavity 202. By filling the cavity 202 of the elastic hollow module 2 with water 203, the water 203 has a low cost and a wide source, and is easily replenished into the cavity 202 through the through hole 201 after evaporation.
Referring to the schematic of fig. 1, in the present embodiment, the shape of the UHPC monomer 101 and the elastic hollow module 2 is matched to the shape of the pier stud 4. By the arrangement, the UHPC monomer 101 and the elastic hollow module 2 which are matched with each other can be produced according to the shapes of different bridge piers 4, and the UHPC monomer and the elastic hollow module are assembled on a construction site.
Referring to the schematic illustration of fig. 1, in the present embodiment, the fixing member 3 is a high-strength bolt, and the connecting structure of the step is provided with a matching fixing hole. With the arrangement, the two UHPC single bodies 101 can be fixedly connected only by inserting the high-strength bolt into the fixing holes of the two adjacent UHPC single bodies 101 on the construction site. In other embodiments, screws and nuts may be used instead of high-tensile bolts.
In the present embodiment, the elastic hollow module 2 is made of rubber. The elastic hollow module 2 is made of materials such as rubber, on one hand, the elastic hollow module 2 is ensured to have certain elasticity, and can play an effective role in buffering when encountering impact; on the other hand, the elastic hollow module 2 can be made of materials such as recycled rubber and the like, so that the cost is low and the environment is protected. In other embodiments, it may be contemplated to make the resilient hollow modules 2 from polyester elastomers or propylene-based elastomers or ethylene-based elastomers or fluoro/silicone elastomers.
Example 2
Referring to the schematic diagrams of fig. 3 and fig. 4, the UHPC shell energy-absorbing slow-release pier of the present embodiment includes two UHPC shells 1 and two elastic hollow modules 2, which are enclosed around a pier column 4, and the two UHPC shells 1 and the two elastic hollow modules 2 are sequentially arranged at intervals in a water direction. Therefore, the UHPC shell 1 and the elastic hollow module 2 form a layer of protective shell, and the protective shell is arranged in the protective shell, so that at least two layers of protection can be formed on the pier column 4; when the protective shell at the outermost layer is damaged by vehicle impact, the protective shell at the inner layer can further continuously protect the pier column 4.
In other modified embodiments, three or more UHPC shells 1 and elastic hollow modules 2 may be sequentially spaced to provide multi-layer protection for the pier stud 4. When the protective shell at the outermost layer is damaged, the protective shell at the inner layer can continuously protect the pier stud 4.
Example 3
Referring to the schematic diagram of fig. 5, the UHPC shell energy-absorbing slow-release pier of the embodiment includes a UHPC shell 1 and an elastic hollow module 2 which are enclosed around a pier column 4, an energy dissipation assembly is further disposed between the elastic hollow module 2 and the pier column 4, the energy dissipation assembly includes a positioning plate 5 and an energy dissipation plate 6, the positioning plate 5 is disposed to be close to the inner elastic hollow module 2 in the vertical direction, the energy dissipation plate 6 is an arc-shaped steel plate, and the arc-shaped steel plate is disposed at a reserved distance between the positioning plate 5 and the pier column 4. With the arrangement, after the UHPC shell 1 and the elastic hollow module 2 are impacted, if the impact kinetic energy is large, the UHPC shell 1 and the elastic hollow module 2 cannot complete the breaking and releasing of the impact kinetic energy, and the locating plate 5 and the energy dissipation plate 6 on the inner side of the elastic hollow module 2 can be further extruded. The dissipative sheet 6 is an arc-shaped steel sheet and thus deforms when being pressed, thereby absorbing a part of kinetic energy and releasing energy during deformation. More perfect protection can be formed to pier post 4 through setting up power consumption subassembly.
In this embodiment, the arc-shaped steel plate is set in the initial state of non-deformation when the reserved space between the positioning plate 5 and the pier column 4 is reserved. Because the arc steel sheet is initial state, does not receive external effort, consequently the arc steel sheet can not be to pier column 4 formation pressure, can not destroy pier column 4's surface integrality. When the arc-shaped steel plate is subjected to the extrusion force, energy can be released through deformation.
In a modified embodiment of this embodiment, the outer side surface of the UHPC monomer 101 away from the elastic hollow module 2 is further provided with a rust-proof layer, and the rust-proof layer is integrally formed with the UHPC monomer 101. By means of the arrangement, the durability and the service life of the whole protection device can be further improved.
Example 4
Referring to the schematic diagram of fig. 6, the UHPC shell energy-absorbing slow-release pier of the present embodiment includes two UHPC shells 1 and two elastic hollow modules 2, which are enclosed around a pier column 4, and the two UHPC shells 1 and the two elastic hollow modules 2 are sequentially arranged at intervals in a horizontal 203 direction; still be provided with energy dissipation assembly between the elasticity cavity module 2 that is closest to pier stud 4 and pier stud 4, energy dissipation assembly includes locating plate 5 and energy dissipation board 6, locating plate 5 is hugged closely in vertical direction inboard elasticity cavity module 2 sets up, energy dissipation board 6 is the arc steel sheet, the arc steel sheet set up in the reservation interval between locating plate 5 and the pier stud 4. Due to the arrangement, the UHPC shell 1 and the elastic hollow module form a two-layer protective shell, so that energy generated when a vehicle is impacted can be effectively dispersed; after the two protective shells are damaged, the energy dissipation assembly can further absorb and release energy so as to reduce damage to the pier column 4.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A UHPC shell energy-absorbing slow-release bridge pier is characterized by comprising a bridge pier column, a UHPC shell and an elastic hollow module, wherein the UHPC shell and the elastic hollow module are enclosed at the periphery of the bridge pier column, the inner diameter of the UHPC shell is larger than the diameter of the bridge pier column, and the elastic hollow module is arranged between the UHPC shell and the bridge pier column; the UHPC shell comprises at least two UHPC single bodies, the two adjacent UHPC single bodies are connected in a close splicing manner through a connecting structure of steps or a connecting structure of mortise and tenon arranged on the vertical side surface, and the connecting structures of the two adjacent UHPC single bodies are fixedly connected through a fixing piece; the elastic hollow module is characterized in that a cavity is formed in the elastic hollow module, a plurality of through holes communicated with the cavity are formed in the surface of the top side of the elastic hollow module, and liquid is filled in the cavity.
2. The UHPC shell energy-absorbing slow-release bridge pier as claimed in claim 1, wherein the number of the UHPC shells and the number of the elastic hollow modules are at least two, and at least two of the UHPC shells and at least two of the elastic hollow modules are sequentially arranged at intervals in the horizontal direction.
3. The UHPC shell energy-absorbing slow-release pier as claimed in claim 1 or 2, wherein the elastic hollow module close to the pier stud is an inner elastic hollow module, an energy dissipation assembly is further arranged between the inner elastic hollow module and the pier stud and comprises a positioning plate and an energy dissipation plate, the positioning plate is arranged to be close to the inner elastic hollow module in the vertical direction, the energy dissipation plate is an arc-shaped steel plate, and the arc-shaped steel plate is arranged at a reserved interval between the positioning plate and the pier stud.
4. The UHPC shell energy-absorbing slow-release pier as claimed in claim 3, wherein the arc-shaped steel plate is in an initial state of not deforming when the positioning plate is arranged at a reserved distance from the pier stud.
5. The UHPC shell energy-absorbing slow-release bridge pier as claimed in claim 4, wherein the connection structure of the steps is stepped notches arranged on two vertical side surfaces of the UHPC single bodies, and the stepped notches of two adjacent UHPC single bodies are matched with each other.
6. The UHPC shell energy-absorbing slow-release pier according to claim 4, wherein the mortise and tenon connection structure is grooves or protrusions arranged on two vertical side surfaces of the UHPC single bodies, and the grooves and the protrusions of two adjacent UHPC single bodies are matched with each other.
7. The UHPC shell energy-absorbing slow-release pier according to claim 4, wherein the width of the cavity is larger than that of the UHPC shell, and the liquid is water.
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| CN202023151178.6U CN214695125U (en) | 2020-12-24 | 2020-12-24 | UHPC shell energy-absorbing slow-release bridge pier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263288A (en) * | 2022-01-14 | 2022-04-01 | 哈尔滨工业大学 | Steel plate concrete sandwich energy consumption protection structure and manufacturing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263288A (en) * | 2022-01-14 | 2022-04-01 | 哈尔滨工业大学 | Steel plate concrete sandwich energy consumption protection structure and manufacturing method thereof |
| CN114263288B (en) * | 2022-01-14 | 2024-02-02 | 哈尔滨工业大学 | Steel plate concrete sandwich energy consumption protection structure and manufacturing method thereof |
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