A crashworthy precast segmental bridge pier

Abstract

The application discloses an anti-collision prefabricated segmental bridge pier, which comprises a spliced bridge pier body, wherein the spliced bridge pier body comprises an upper structure, a spliced bridge pier segment and a prefabricated pile cap, the spliced bridge pier segment is arranged on the prefabricated pile cap, the upper structure is arranged at the upper end of the spliced bridge pier segment, and the lower part of the spliced bridge pier segment is provided with an anti-collision device part. The spliced bridge pier segment is arranged on the prefabricated pile cap, the upper structure is arranged at the upper end of the spliced bridge pier segment, the upper structure, the spliced bridge pier segment and the prefabricated pile cap form the above-mentioned spliced bridge pier body, and the lower part of the spliced bridge pier segment is wrapped by the anti-collision device part, so that the energy dissipation capacity and the self-resetting performance of the spliced bridge pier body are enhanced, local shear damage and impact damage of the bridge pier after being impacted are effectively prevented, the impact resistance and the self-resetting performance of the bridge pier are improved, the construction process is simple, on-site construction is convenient, the construction quality is easy to guarantee, and the application is economic and environment-friendly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pier anti-collision, more particularly, the present application relates to a prefabricated segmental pier. BACKGROUND

[0002] With the rapid development of urban traffic, people are increasingly demanding high construction quality, short construction period and low disturbance to surrounding traffic and environment for bridges. Segmental prefabricated and assembled pier is born in this background. Segmental prefabricated and assembled pier has the advantages of fast construction speed, less impact on traffic, factory production and assembly construction, thereby providing reliable guarantee for the construction speed and construction quality of the pier. In addition, compared with the integral cast-in-situ concrete pier, the segmental pier also has good opening and closing energy dissipation effect, which greatly improves the seismic performance of the pier.

[0003] However, segmental assembled pier is still in its infancy in China, and there are still many deficiencies, such as the segment connection being a weak force point, the impact resistance being particularly weak, and the pier being prone to damage by sudden disasters such as vehicle and ship impact and rockfall impact. The existing reinforcement methods for enhancing impact resistance, such as segment insertion and overall reinforcement, not only have complex construction process and high construction cost, but also cannot fully play the opening and closing energy dissipation advantage of the segmental pier, which seriously deviates from the original intention of using segmental pier.

[0004] Therefore, it is necessary to provide a prefabricated segmental pier with anti-collision function to effectively solve the problems in the prior art. SUMMARY

[0005] A series of simplified concepts are introduced in the summary section, which will be further described in detail in the specific embodiment section. The summary section of the present application does not mean to attempt to limit the key features and necessary technical features of the claimed technical solution, nor to determine the protection scope of the claimed technical solution.

[0006] To at least partially solve the above problems, the present application provides a prefabricated segmental pier with anti-collision function, comprising: a segmental pier main body, the segmental pier main body comprising an upper structure, a segmental pier segment, and a prefabricated pile cap, the segmental pier segment being arranged on the prefabricated pile cap, the upper structure being arranged at the upper end of the segmental pier segment, and the lower part of the segmental pier segment being provided with an anti-collision device part.

[0007] According to the prefabricated segmental pier with anti-collision function of the present application, the anti-collision device part comprises a plurality of anti-collision sleeve plates which are detachably connected in sequence, and the anti-collision sleeve plate comprises an anti-collision sleeve plate shell and a wave-shaped energy dissipation web plate, and the wave-shaped energy dissipation web plate is arranged in the anti-collision sleeve plate shell.

[0008] The prefabricated segmental bridge pier of the application is provided with a fixed inner groove at one end of the anti-collision sleeve shell and a fixed plug plate at the other end, and two adjacent anti-collision sleeve shells are connected through the fixed plug plate and the fixed inner groove.

[0009] The prefabricated segmental bridge pier of the application is provided with a composite energy dissipation unit in the wave-shaped concave-convex section of the wave-shaped energy dissipation web, which includes a first anti-collision cylinder, a second anti-collision cylinder arranged in the first anti-collision cylinder, a vertical inner support arranged in the first anti-collision cylinder, an intermediate energy dissipation part between the first anti-collision cylinder and the second anti-collision cylinder, a plurality of rotating energy dissipation frames arranged between the first anti-collision cylinder and the second anti-collision cylinder from top to bottom, a plurality of inner rotating energy dissipation bodies arranged on the rotating energy dissipation frame, and a rotating elastic ring arranged between two adjacent rotating energy dissipation frame plates.

[0010] The prefabricated segmental bridge pier of the application is provided with a composite energy dissipation unit in the wave-shaped concave-convex section of the wave-shaped energy dissipation web, which includes a first anti-collision cylinder, a second anti-collision cylinder arranged in the first anti-collision cylinder, a vertical inner support arranged in the first anti-collision cylinder, an intermediate energy dissipation part between the first anti-collision cylinder and the second anti-collision cylinder, a plurality of rotating energy dissipation frames arranged between the first anti-collision cylinder and the second anti-collision cylinder from top to bottom, a plurality of inner rotating energy dissipation bodies arranged on the rotating energy dissipation frame, and a rotating elastic ring arranged between two adjacent rotating energy dissipation frame plates.

[0011] The prefabricated segmental bridge pier of the application is provided with a composite energy dissipation unit in the wave-shaped concave-convex section of the wave-shaped energy dissipation web, which includes a first anti-collision cylinder, a second anti-collision cylinder arranged in the first anti-collision cylinder, a vertical inner support arranged in the first anti-collision cylinder, an intermediate energy dissipation part between the first anti-collision cylinder and the second anti-collision cylinder, a plurality of rotating energy dissipation frames arranged between the first anti-collision cylinder and the second anti-collision cylinder from top to bottom, a plurality of inner rotating energy dissipation bodies arranged on the rotating energy dissipation frame, and a rotating elastic ring arranged between two adjacent rotating energy dissipation frame plates.

[0012] The prefabricated segmental bridge pier of the application is provided with a composite energy dissipation unit in the wave-shaped concave-convex section of the wave-shaped energy dissipation web, which includes a first anti-collision cylinder, a second anti-collision cylinder arranged in the first anti-collision cylinder, a vertical inner support arranged in the first anti-collision cylinder, an intermediate energy dissipation part between the first anti-collision cylinder and the second anti-collision cylinder, a plurality of rotating energy dissipation frames arranged between the first anti-collision cylinder and the second anti-collision cylinder from top to bottom, a plurality of inner rotating energy dissipation bodies arranged on the rotating energy dissipation frame, and a rotating elastic ring arranged between two adjacent rotating energy dissipation frame plates.

[0013] The anti-collision prefabricated segmental bridge pier according to the embodiment of the present application, the assembled bridge pier section comprises a first prefabricated concrete segment, a plurality of second prefabricated concrete segments, the plurality of second prefabricated concrete segments are sequentially arranged on a prefabricated bearing platform from top to bottom, the first prefabricated concrete segment is arranged at the upper end of the uppermost second prefabricated concrete segment, and the anti-collision device part is arranged on the lowermost second prefabricated concrete segment.

[0014] The anti-collision prefabricated segmental bridge pier according to the embodiment of the present application, the second prefabricated concrete segment comprises a protective layer, a reinforcing member is arranged in the protective layer, and a plurality of embedded reinforcing members are arranged between adjacent two second prefabricated concrete segments.

[0015] The anti-collision prefabricated segmental bridge pier according to the embodiment of the present application, a plurality of prestressed tendons are arranged between the superstructure, the assembled bridge pier section and the prefabricated bearing platform, the bottom of the prefabricated bearing platform is provided with a reserved groove, the lower end of the prestressed tendon extends out of the reserved groove, and the lower end of the prestressed tendon is provided with an anchor device.

[0016] Compared with the prior art, the present application at least has the following beneficial effects:

[0017] The anti-collision prefabricated segmental bridge pier according to the present application comprises an assembled bridge pier body, the assembled bridge pier body comprises a superstructure, an assembled bridge pier section and a prefabricated bearing platform, the assembled bridge pier section is arranged on the prefabricated bearing platform, and the superstructure is arranged at the upper end of the assembled bridge pier section; the superstructure, the assembled bridge pier section and the prefabricated bearing platform form the assembled bridge pier body, and the lower part of the assembled bridge pier section is wrapped by the anti-collision device part, so that the energy dissipation capacity and the self-resetting performance of the assembled bridge pier body are enhanced, the local shear damage and the outburst damage of the bridge pier after being impacted are effectively prevented, the impact resistance and the self-resetting performance of the bridge pier are improved, the construction process is simple, the on-site construction is convenient, the construction quality is easy to guarantee, and the present application is economic and environment-friendly.

[0018] The anti-collision prefabricated segmental bridge pier according to the present application, other advantages, objects and characteristics of the present application will be embodied in part through the following description, and will be understood by those skilled in the art through research and practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation on the present application. In the drawings:

[0020] Figure 1 It is a structural schematic diagram of the present application.

[0021] Figure 2 It is a structural top view of the first prefabricated concrete segment in the present application.

[0022] Figure 3 Structure plan view of the second precast concrete segment in the present application.

[0023] Figure 4 Structure schematic view of the anti-collision device part in the present application.

[0024] Figure 5 Internal structure schematic view of the anti-collision device part in the present application.

[0025] Figure 6 Structure plan view of the composite energy dissipation unit in the present application.

[0026] Figure 7 Partial structure schematic view of the intermediate energy dissipation part in the present application.

[0027] Figure 8 Structure side view of the intermediate energy dissipation part in the present application.

[0028] Figure 9 Partial structure side view of the intermediate energy dissipation part in the present application.

[0029] Figure 10 Structure schematic view of the inner reset support cylinder in the present application.

[0030] Figure 11 Structure schematic view of the A part in the present application Figure 6

[0031] Figure 12 Structure schematic view of the vertical inner support part in the present application. DETAILED DESCRIPTION

[0032] The present application will be further described in conjunction with the accompanying drawings and embodiments, so that those skilled in the art can implement the present application according to the description and figures.

[0033] It should be understood that the terms such as "have", "contain" and "include" used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0034] As Figures 1-12 ​As shown, the present application provides a kind of prefabricated segmental bridge pier of anti-collision, comprising: assembled bridge pier main body 100, the assembled bridge pier main body 100 includes upper structure 1, assembled bridge pier section 2, prefabricated platform 3, here assembled bridge pier section 2 is installed on prefabricated platform 3, and upper structure 1 is installed on the upper end of assembled bridge pier section 2, and the assembled bridge pier main body 100 is formed by upper structure 1, assembled bridge pier section 2, prefabricated platform 3, and the lower part of assembled bridge pier section 2 is wrapped by anti-collision device part 4, which can enhance the energy dissipation capacity and self-resetting performance of the assembled bridge pier main body 100, effectively prevent local shear failure and damage from being knocked out after the pier is hit, improve the impact resistance and self-resetting performance of the pier, the construction process is simple, the on-site construction is convenient, the construction quality is easy to guarantee, and it is economic and environmental protection.

[0035] Further, a plurality of prestressed tendons 6 are installed between the upper structure 1, the assembled bridge pier section 2 and the prefabricated platform 3 in some embodiments of the present application, and the plurality of prestressed tendons 6 are arranged from top to bottom in the upper structure 1, the assembled bridge pier section 2 and the prefabricated platform 3, so as to increase the structural strength of the entire assembled bridge pier main body 100; wherein a reserved groove 31 is formed at the bottom of the prefabricated platform 3, and the lower end of the prestressed tendon 6 extends out of the reserved groove 31, and an anchor 61 is installed at the lower end of the prestressed tendon 6, so as to firmly install the prestressed tendon 6 from the bottom in the prefabricated platform 3, facilitating the fixing and installation of the operator.

[0036] Exemplary assembled bridge pier section

[0037] As Figure 1 Further, the present application provides a specific structure of the assembled bridge pier section 2 in some embodiments, which comprises a first prefabricated concrete section 21 and a plurality of second prefabricated concrete sections 22, wherein the plurality of second prefabricated concrete sections 22 are sequentially installed on the prefabricated platform 3 from top to bottom, and the first prefabricated concrete section 21 is installed on the upper end of the uppermost second prefabricated concrete section 22, so as to retain the opening and energy dissipation of the assembled bridge pier main body 100 by the design of the first prefabricated concrete section 21 and the second prefabricated concrete section 22. Further, the anti-collision device part 4 is installed on the lowermost second prefabricated concrete section 22, so as to increase the anti-collision performance of the second prefabricated concrete section 22 by the anti-collision device part 4, and improve the impact resistance and self-resetting performance of the pier.

[0038] As Figures 2-3As shown, the aforementioned second precast concrete segment 22 further includes a protective layer 221, within which reinforcing bars 222 are installed, increasing the structural strength of the second precast concrete segment 22. Furthermore, multiple embedded reinforcing bars 223 are installed between adjacent second precast concrete segments 22, further increasing the impact resistance at the connection points of the second precast concrete segments 22. This prevents damage to the connection points of the second precast concrete segments 22 during sudden disasters such as vehicle / ship collisions or rockfalls.

[0039] Exemplary anti-collision device section

[0040] like Figure 4 As shown, further, some embodiments of the present invention provide a specific structure of the anti-collision device 4. The anti-collision device 4 includes a plurality of anti-collision sleeve plates 41 that are detachably connected in sequence. The number of anti-collision sleeve plates 41 can be set to 4. The 4 anti-collision sleeve plates 41 are sequentially connected and wrapped around the lower part of the assembled bridge pier section 2. Here, the anti-collision sleeve plate 41 includes an anti-collision sleeve shell 42 and a corrugated energy dissipation web 43. The corrugated energy dissipation web 43 is installed inside the anti-collision sleeve shell 42. Therefore, when an external object collides with the anti-collision sleeve shell 42, the internal corrugated energy dissipation web 43 can greatly improve the energy dissipation capacity and provide collision performance.

[0041] Furthermore, a foam buffer 44 is installed inside the anti-collision sleeve shell 42. Specifically, the foam buffer 44 fills the gap between the corrugated energy dissipation web 43 and the anti-collision sleeve shell 42, which can further enhance the energy dissipation capacity.

[0042] Furthermore, a fixing inner groove 421 is provided at one end of the anti-collision sleeve shell 42, and a fixing insert plate 422 is installed at the other end. In this way, two adjacent anti-collision sleeve plates 41 can be connected by the fixing insert plate 422 and the fixing inner groove 421. Corresponding screw holes are provided on the fixing inner groove 421 and the fixing insert plate 422. The fixing and disassembly connection of the fixing inner groove 421 and the fixing insert plate 422 are realized by the screw 423. This makes the construction process simple, the on-site construction convenient, the construction quality easy to guarantee, and economical and environmentally friendly.

[0043] Exemplary composite energy dissipation unit

[0044] like Figures 5-9As shown, in order to further increase the anti-collision ability of the anti-collision device part 4, a composite energy dissipation unit 45 is installed in the wave-shaped concave-convex section 431 of the wave-shaped energy dissipation web 43, and the foam buffer 44 is filled between the wave-shaped energy dissipation web 43 and the aperture of the anti-collision sleeve plate shell 42 after the composite energy dissipation unit 45 is installed in each wave-shaped concave-convex section 431 of the wave-shaped energy dissipation web 43, so that the foam buffer 44 can fix the composite energy dissipation unit 45, and when the external object collides with the anti-collision sleeve plate shell 42, the internal composite energy dissipation unit 45 can cooperate with the wave-shaped concave-convex section 431 to absorb and dissipate the anti-collision energy, so that the entire anti-collision device part 4 has good crashworthiness and self-resetting performance.

[0045] Further, the specific structure of the composite energy dissipation unit 45 is provided in some embodiments of the present application, which includes a first anti-collision cylinder 46, a second anti-collision cylinder 47, a vertical inner support part 48, and an intermediate energy dissipation part 49, wherein the second anti-collision cylinder 47 is installed in the first anti-collision cylinder 46, the vertical inner support part 48 is installed in the second anti-collision cylinder 47, and the intermediate energy dissipation part 49 is installed between the first anti-collision cylinder 46 and the second anti-collision cylinder 47, wherein the first anti-collision cylinder 46 and the second anti-collision cylinder 47 can be made of materials with moving elasticity, such as rubber, silicone or plastic. The first anti-collision cylinder 46 and the second anti-collision cylinder 47 respectively fix and shield the vertical inner support part 48 and the intermediate energy dissipation part 49, the vertical inner support part 48 internally supports the entire composite energy dissipation unit 45, and the intermediate energy dissipation part 49 serves as the main energy dissipation component.

[0046] The intermediate energy dissipation part 49 includes a plurality of rotating energy dissipation frames 491 and a plurality of inner rotating energy dissipation bodies 492, wherein the plurality of rotating energy dissipation frames 491 are sequentially installed between the first anti-collision cylinder 46 and the second anti-collision cylinder 47 from top to bottom, the plurality of inner rotating energy dissipation bodies 492 are evenly installed on the rotating energy dissipation frames 491, and a rotating elastic ring 490 is installed between two adjacent rotating energy dissipation frames 491, wherein the two adjacent rotating energy dissipation frames 491 can rotate relative to the second anti-collision cylinder 47 through the rotating elastic ring 490, so that when the rotating energy dissipation frames 491 and the inner rotating energy dissipation bodies 492 in the intermediate energy dissipation part 49 are subjected to external collision energy, the inner rotating energy dissipation bodies 492 can drive the rotating energy dissipation frames 491 to rotate under the action of the external collision energy, which allows the plurality of inner rotating energy dissipation bodies 492 to receive more external collision energy, thereby dispersing and consuming the external collision energy, thereby greatly increasing the anti-collision ability of the entire anti-collision device part 4.

[0047] Further, the inner rotating energy dissipation body 492 is rotatably installed on the rotating energy dissipation frame 491, and the inner rotating energy dissipation body 492 can also rotate on the outer wall of the second anti-collision cylinder 47, so that when the inner rotating energy dissipation body 492 is subjected to external collision energy, it can accept more collision energy through its own rotation, and cooperate with the wave-shaped concave-convex section 431 to absorb and dissipate the collision energy.

[0048] Here, the inner rotating energy dissipation body 492 of the structure includes a rotating cylinder 493, an inner shaft 494, and a plurality of energy dissipation springs 495, wherein a shielding cover 496 is installed at both ends of the rotating cylinder 493, the inner shaft 494 passes through the rotating cylinder 493 and is rotatably connected with the rotating energy dissipation frame 491, and the plurality of energy dissipation springs 495 are installed between the inner shaft 494 and the rotating cylinder 493. Here, the shielding cover 496 prevents the foam cushion 44 from entering the rotating cylinder 493 during the filling process, thereby preventing the energy dissipation springs 495 from being blocked and affecting the elastic support function of the energy dissipation springs 495. Therefore, when the rotating cylinder 493 is subjected to external collision energy, the rotating cylinder 493 deforms to transmit the external collision energy to the plurality of energy dissipation springs 495, and the plurality of energy dissipation springs 495 contract to generate elastic force to dissipate the external collision energy.

[0049] Further, the plurality of energy dissipation springs 495 can also drive the rotating cylinder 493 to rotate on the inner shaft 494, so that the entire inner rotating energy dissipation body 492 rotates on the rotating energy dissipation frame 491, and the plurality of inner rotating energy dissipation bodies 492 rotate, and the entire rotating energy dissipation frame 491 also rotates under the action of the external collision energy, so that the external collision energy is received by more inner rotating energy dissipation bodies 492, and more energy dissipation springs 495 contract to generate elastic force to dissipate the external collision energy, and the energy dissipation springs 495 can also be automatically reset, thereby further improving the self-resetting performance of the entire anti-collision device 4.

[0050] Further, the design of the plurality of rotating energy dissipation frames 491 and the plurality of inner rotating energy dissipation bodies 492 in the intermediate energy dissipation part 49 facilitates subsequent maintenance of the intermediate energy dissipation part 49. When external collision occurs, the damaged rotating energy dissipation frames 491 and inner rotating energy dissipation bodies 492 can be disassembled and replaced after the anti-collision sleeve plate 41 is disassembled, and the undamaged rotating energy dissipation frames 491 and inner rotating energy dissipation bodies 492 can be reused, thereby greatly reducing the use cost.

[0051] Exemplary inner support mechanism

[0052] As Figures 10-11As shown, further, the composite energy dissipation unit 45 in some embodiments of the present application also comprises an inner support mechanism 50, which is installed between the first anti-collision cylinder 46 and the intermediate energy dissipation part 49 through the inner support mechanism 50, supports the first anti-collision cylinder 46 from the inside of the first anti-collision cylinder 46, increases the anti-collision capability of the first anti-collision cylinder 46, supports the first anti-collision cylinder 46, prevents the first anti-collision cylinder 46 from directly contacting the intermediate energy dissipation part 49 to hinder the rotation of the intermediate energy dissipation part 49, and provides installation space for the intermediate energy dissipation part 49.

[0053] The inner support mechanism 50 of the structure comprises a plurality of inner reset support cylinders 51 and a plurality of reset rings 52. Specifically, the inner reset support cylinder 51 is installed between the inner rotating energy dissipation body 492 and the first anti-collision cylinder 46, a plurality of protruding strips 511 are installed on the outer wall of the inner reset support cylinder 51, the inner reset support cylinder 51 provides support for the first anti-collision cylinder 46 from the inside, and the reset ring 52 is sleeved on the inner reset support cylinder 51. The reset ring 52 comprises a plurality of inverted U-shaped reset plates 521, the inverted U-shaped reset plates 521 are buckled on the protruding strips 511, and a reset spring 522 is installed between two adjacent inverted U-shaped reset plates 521.

[0054] Further, in order to fix the inner reset support cylinder 51, a plurality of inner groove bodies 461 are formed on the inner wall of the first anti-collision cylinder 46, so that the above-mentioned protruding strips 511 can enter the inner groove bodies 461, and the corresponding inverted U-shaped reset plates 521 can extend into the inner groove bodies 461. Further, an outer protruding strip 462 is installed on the inner wall of the first anti-collision cylinder 46, which can abut against the outer wall of the inverted U-shaped reset plate 521, so that the first anti-collision cylinder 46 fixes the inner reset support cylinder 51.

[0055] Therefore, when the above-mentioned inner support mechanism 50 is subjected to external collision energy, the inner reset support cylinder 51 deforms to transmit the external collision energy to the internal intermediate energy dissipation part 49, and at this time the reset spring 522 is elongated to fix two adjacent inverted U-shaped reset plates 521 to prevent the two adjacent inverted U-shaped reset plates 521 from separating, and further under the action of the plurality of inverted U-shaped reset plates 521 and the plurality of reset springs 522, the inner reset support cylinder 51 can be reset to prevent the inner reset support cylinder 51 from hindering the plurality of rotating energy dissipation frames 491 and the inner rotating energy dissipation body 492 inside, so that the rotating energy dissipation frames 491 and the inner rotating energy dissipation body 492 can rotate;

[0056] In addition, the inner reset support cylinder 51 itself also has elastic force, so the inner reset support cylinder 51 can also be automatically reset, so as to realize the supporting effect of the inner support mechanism 50, increase the anti-collision ability of the first anti-collision cylinder 46, support the first anti-collision cylinder 46, prevent the first anti-collision cylinder 46 from directly contacting the middle energy dissipation part 49 and hindering the rotation of the middle energy dissipation part 49, and further improve the self-resetting performance of the entire anti-collision device part 4.

[0057] Exemplary vertical inner support part

[0058] As shown in 12, further, some embodiments of the present application provide a specific structure of the vertical inner support part, which includes the intermediate support rod 481 and the plurality of circumferential support rods 484, the intermediate support rod 481 and the plurality of circumferential support rods 484 are installed in the second anti-collision cylinder 47, and specifically, the plurality of circumferential support rods 484 are installed on the periphery of the intermediate support rod 481.

[0059] Among them, the intermediate support rod 481 of the structure includes the first vertical cylinder body 482 and the plurality of first vertical elastic core rods 483, and the plurality of first vertical elastic core rods 483 are installed in the first vertical cylinder body 482; the circumferential support rod 484 includes the second vertical cylinder body 485 and the plurality of second vertical elastic core rods 486, and the plurality of second vertical elastic core rods 486 are installed in the second vertical cylinder body 485.

[0060] It can be understood that the first vertical elastic core rod 483 and the second vertical elastic core rod 486 described above can be made of rubber, silica gel or plastic, so that the first vertical elastic core rod 483 and the second vertical elastic core rod 486 have good supporting elastic force and can resist external collision energy.

[0061] Through the design of the intermediate support rod 481 and the circumferential support rod 484 of the above structure, the vertical inner support part 48 can play an internal supporting role in the second anti-collision cylinder 47, so that when the entire composite energy dissipation unit 45 is subjected to external collision energy, the entire composite energy dissipation unit 45 is prevented from collapsing from the inside, thereby increasing the structural strength of the composite energy dissipation unit 45 and further improving the self-resetting performance of the entire anti-collision device part 4.

[0062] In the description of the application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0063] In the present application, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0064] Although the embodiments of the present application have been disclosed as above, it is not limited only to the applications listed in the specification and embodiments, and it can be fully applied to various fields suitable for the present application, and additional modifications can be easily realized by those skilled in the art, and therefore the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A precast segmental bridge pier for collision protection, characterized in that, include: The main body of the assembled bridge pier (100) includes a superstructure (1), an assembled bridge pier section (2), and a precast pier cap (3). The assembled bridge pier section (2) is set on the precast pier cap (3). The superstructure (1) is set at the upper end of the assembled bridge pier section (2). The lower part of the assembled bridge pier section (2) is provided with an anti-collision device (4). The anti-collision device (4) includes a plurality of anti-collision sleeve plates (41) that are detachably connected in sequence. The anti-collision sleeve plate (41) includes an anti-collision sleeve shell (42) and a corrugated energy dissipation web plate (43). The corrugated energy dissipation web plate (43) is disposed inside the anti-collision sleeve shell (42). The waveform concave-convex section (431) of the waveform energy dissipation web (43) is also provided with a composite energy dissipation unit (45). The composite energy dissipation unit (45) includes a first anti-collision cylinder (46), a second anti-collision cylinder (47) provided in the first anti-collision cylinder (46), and a vertical inner support part (48) provided in the first anti-collision cylinder (46). An intermediate energy dissipation part (49) is provided between the first anti-collision cylinder (46) and the second anti-collision cylinder (47). The intermediate energy dissipation part (49) includes multiple rotating energy dissipation frames (491) and multiple inner rotating energy dissipation bodies (492). The multiple rotating energy dissipation frames (491) are arranged from top to bottom between the first anti-collision cylinder (46) and the second anti-collision cylinder (47). The multiple inner rotating energy dissipation bodies (492) are arranged on the rotating energy dissipation frames (491). A rotating elastic ring (490) is provided between two adjacent rotating energy dissipation frames (491). The composite energy dissipation unit (45) further includes an inner support mechanism (50), which includes multiple inner reset support cylinders (51) and multiple reset rings (52). The inner reset support cylinders (51) are disposed between the inner rotating energy dissipation body (492) and the first anti-collision cylinder (46). Multiple protruding strips (511) are provided on the outer wall of the inner reset support cylinders (51). The reset rings (52) are sleeved on the inner reset support cylinders (51). The reset rings (52) include multiple inverted U-shaped reset plates (521). The position plate (521) is fastened to the protruding strip (511), and a reset spring (522) is provided between two adjacent inverted U-shaped reset plates (521). The inner wall of the first anti-collision cylinder (46) is provided with an inner groove (461) corresponding to the protruding strip (511), and the inverted U-shaped reset plate (521) extends into the inner groove (461). The inner wall of the first anti-collision cylinder (46) is also provided with an outer protruding strip (462), and the outer protruding strip (462) abuts against the outer wall of the inverted U-shaped reset plate (521).

2. The precast segmental bridge pier for collision protection according to claim 1, characterized in that, One end of the anti-collision sleeve shell (42) is provided with a fixed inner groove (421), and the other end is provided with a fixed insert plate (422). Two adjacent anti-collision sleeve plates (41) are connected by the fixed insert plate (422) and the fixed inner groove (421). A foam buffer (44) is also provided inside the anti-collision sleeve shell (42), and the foam buffer (44) fills the gap between the corrugated energy dissipation web (43) and the anti-collision sleeve shell (42).

3. The precast segmental bridge pier for collision protection according to claim 1, characterized in that, The inner rotating energy dissipator (492) includes a rotating cylinder (493), an inner shaft (494), and multiple energy dissipation springs (495). The rotating cylinder (493) has cover (496) at both ends. The inner shaft (494) passes through the rotating cylinder (493) and is rotatably connected to the rotating energy dissipator frame (491). The multiple energy dissipation springs (495) are arranged between the inner shaft (494) and the rotating cylinder (493).

4. The precast segmental bridge pier for collision protection according to claim 1, characterized in that, The vertical inner support part (48) includes an intermediate support rod (481) and a plurality of circumferential support rods (484). The plurality of circumferential support rods (484) are arranged around the intermediate support rod (481). The intermediate support rod (481) includes a first vertical cylinder (482) and a plurality of first vertical elastic core rods (483). The plurality of first vertical elastic core rods (483) are arranged inside the first vertical cylinder (482). The circumferential support rod (484) includes a second vertical cylinder (485) and a plurality of second vertical elastic core rods (486). The plurality of second vertical elastic core rods (486) are arranged inside the second vertical cylinder (485).

5. The precast segmental bridge pier for collision protection according to claim 1, characterized in that, The assembled bridge pier segment (2) includes a first precast concrete segment (21) and multiple second precast concrete segments (22). The multiple second precast concrete segments (22) are arranged sequentially from top to bottom on the precast pier (3). The first precast concrete segment (21) is arranged at the upper end of the uppermost second precast concrete segment (22), and the anti-collision device (4) is arranged on the lowermost second precast concrete segment (22).

6. The precast segmental bridge pier for collision protection according to claim 5, characterized in that, The second precast concrete segment (22) includes a protective layer (221), in which steel bars (222) are provided, and multiple embedded steel bars (223) are provided between two adjacent second precast concrete segments (22).

7. The precast segmental bridge pier for collision protection according to claim 1, characterized in that, Multiple prestressing tendons (6) are provided between the superstructure (1), the assembled pier section (2), and the precast pier (3), and a reserved groove (31) is provided at the bottom of the precast pier (3). The lower end of the prestressing tendon (6) extends out of the reserved groove (31), and an anchor (61) is provided at the lower end of the prestressing tendon (6).

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