Self-resetting bridge pier adapting to torsion

Abstract

The invention relates to the technical field of bridges, and provides a self-resetting pier adapting to torsion. The self-resetting pier adapting to torsion comprises a bearing platform, a pier column and a plurality of energy dissipation components, wherein the pier column is arranged on the bearing platform; the multiple energy consumption parts are distributed on the periphery of the pier column at intervals and located between the bearing platform and the pier column. And under the condition that the pier column is twisted, the energy consumption part rotates relative to the bearing platform along with the pier column. According to the self-resetting bridge pier, the defect that a self-resetting bridge pier in the prior art cannot cope with coupling stress of lateral force and torque is overcome, the self-resetting bridge pier adapting to torsion is achieved, decoupling of pier column torsion displacement and lateral deformation in the bridge pier is achieved, and an energy consumption device is prevented from being damaged in advance under complex stress.

Description

Technical Field

[0001] The invention relates to the technical field of bridges, and in particular to a self-resetting bridge pier capable of adapting to torsion. Background Art

[0002] Self-resetting bridge piers are made by disconnecting the longitudinal reinforcement of the pier column and the abutment, and then connecting them through dry joints. Each component is connected only by built-in unbonded prestressed tendons and energy dissipation devices to form a whole. In the event of an earthquake, the energy dissipation device dissipates the seismic energy to avoid serious damage to the bridge piers; the prestressed tendons and the bridge's own weight self-reset to reduce residual deformation and achieve rapid recovery.

[0003] Traditional self-centering bridge piers are usually designed for the condition that only lateral forces exist on the top of the piers during earthquakes. Under the action of earthquakes, the piers of irregular bridges (curved bridges, skew bridges, skew curved bridges, etc.) may have lateral forces and torques along the pier axis at the same time, and there is a coupled force of compression, bending, shear and torsion. Under the coupled state of lateral force and torque, the energy dissipation device of traditional self-centering bridge piers may be damaged prematurely, causing the piers to lose their lateral bearing capacity and cause the collapse of the bridge structure. Summary of the invention

[0004] The present invention provides a self-resetting bridge pier that can adapt to torsion, so as to solve the defect that the self-resetting bridge piers in the prior art cannot cope with the coupled stress of lateral force and torque, and realize a self-resetting bridge pier that can adapt to torsion, so as to realize the decoupling of the torsional displacement of the pier column and the lateral deformation in the pier, avoid the premature destruction of the energy-consuming device, and further realize the self-resetting and recoverable performance of the irregular bridge under the earthquake action of the coupled compression, bending and torsion.

[0005] The present invention provides a self-resetting bridge pier capable of adapting to torsion, comprising: platform; Pier column, set on the foundation; A plurality of energy-absorbing damping components are distributed at intervals on the outer periphery of the pier column, and the energy-absorbing damping components are located between the cap and the pier column; when the pier column is twisted, the energy-absorbing damping components rotate relative to the cap along with the pier column.

[0006] According to the torsion-adaptable self-resetting bridge pier provided by the present invention, the cap includes: The top of the pedestal body is provided with a placement groove, which is used to limit the pier column; The track plate is arranged inside the placement groove; the track plate is provided with a guide rail, and the energy dissipation damping component is slidably arranged on the guide rail.

[0007] According to the self-resetting pier that adapts to torsion provided by the present invention, the pedestal also includes a limiting component, the limiting component is arranged on the top of the guide rail, the energy-absorbing and damping component passes through the limiting component, and the limiting component is used to prevent the energy-absorbing and damping component from leaving the guide rail.

[0008] According to the self-resetting bridge pier adapted to torsion provided by the present invention, the limiting component comprises: A first limiting plate is provided on the track plate, and the first limiting plate at least partially extends to the top of the guide rail on one side of the track plate; The second limiting plate is arranged on the track plate, and at least a part of the second limiting plate extends to the top of the guide rail on the other side of the track plate.

[0009] According to the torsion-adaptable self-resetting bridge pier provided by the present invention, the pier column comprises: A pier column body, the side of which is connected to the damping energy-absorbing component, the bottom end of the pier column body is located in the placement groove, and a first prestressed pipe is arranged inside the pier column body; The prestressed component passes through the first prestressed pipe, and the bottom end of the prestressed component extends to the interior of the base body.

[0010] According to the self-resetting bridge pier capable of adapting to torsion provided by the present invention, the prestressed component comprises at least two anchors, and a plurality of stress tendons are arranged between the two anchors.

[0011] According to the self-resetting pier adapted to torsion provided by the present invention, a second prestressed pipe is provided at the bottom of the accommodating groove, the second prestressed pipe has the same diameter as the first prestressed pipe, and the second prestressed pipe is coaxially arranged with the first prestressed pipe.

[0012] According to the torsion-adaptive self-resetting bridge pier provided by the present invention, the damping energy-absorbing component includes a slider and an arc-shaped yielding energy absorber. The slider is slidably arranged on a guide rail. One end of the arc-shaped yielding energy absorber is connected to the slider, and the other end is connected to the pier column.

[0013] According to the torsion-adaptive self-resetting bridge pier provided by the present invention, the cross-section of the arc-shaped yielding energy absorber is a U-shaped structure, and the width of the arc-shaped yielding energy absorber gradually decreases from the end connected to the slider to the end connected to the pier column.

[0014] According to the self-resetting bridge pier capable of adapting to torsion provided by the present invention, a polytetrafluoroethylene plate is provided on the top surface of the pedestal, and a stainless steel plate is provided on the bottom surface of the pier column.

[0015] The present invention provides a self-resetting bridge pier that adapts to torsion. In addition to being able to cope with the lateral thrust of the pier column, the present invention also realizes that when the pier column needs to rotate due to external factors, the energy-consuming component can follow the pier column to rotate appropriately relative to the cap, without deformation, and without bringing additional torque to the pier column. The torsional displacement of the pier column and the lateral deformation in the bridge pier can be decoupled, avoiding premature damage to the energy-consuming device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a three-dimensional diagram of the self-resetting bridge pier that can adapt to torsion provided by the present invention.

[0018] Figure 2 It is a cross-sectional view of the self-resetting bridge pier capable of adapting to torsion provided by the present invention.

[0019] Figure 3 It is a structural schematic diagram of the foundation of the self-resetting bridge pier that can adapt to torsion provided by the present invention.

[0020] Figure 4 It is a schematic structural diagram of a track plate of a self-resetting bridge pier that is adaptable to torsion provided by the present invention.

[0021] Figure 5 It is a schematic structural diagram of a limiting component of a self-resetting bridge pier that is adaptable to torsion provided by the present invention.

[0022] Figure 6 It is a schematic structural diagram of a pier column of a self-resetting bridge pier that can adapt to torsion provided by the present invention.

[0023] Figure 7 It is a structural schematic diagram of the prestressed component of the self-resetting bridge pier that adapts to torsion provided by the present invention.

[0024] Figure 8 It is a schematic structural diagram of the energy-consuming component of the self-resetting bridge pier that can adapt to torsion provided by the present invention.

[0025] Reference numerals: 100: capping platform; 110: capping platform body; 111: placement groove; 112: second prestressed pipe; 120: track plate; 121: guide rail; 122: channel; 123: first limiting hole; 130: first limiting plate; 131: second limiting hole; 140: second limiting plate; 141: third limiting hole; 200: pier column; 210: pier column body; 211: first prestressed pipe; 212: fourth limiting hole; 220: prestressed component; 221: anchor; 222: stress tendon; 300: energy-consuming component; 310: slider; 320: outer arc segment; 330: arch segment; 340: inner arc segment; 350: fifth limiting hole. DETAILED DESCRIPTION

[0026] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0029] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0031] Combine the following Figure 1-Figure 8 The structure and working principle of the self-resetting bridge pier capable of adapting to torsion provided by the present invention are described.

[0032] Reference Figure 1 or Figure 2 A self-resetting pier that adapts to torsion provided by the present invention includes a cap 100, a pier 200 and a plurality of energy-absorbing components 300, wherein the pier 200 is arranged on the cap 100; the plurality of energy-absorbing components 300 are distributed at intervals on the periphery of the pier 200, and the energy-absorbing components 300 are located between the cap 100 and the pier 200; when the pier 200 is torsionally twisted, the energy-absorbing components 300 rotate relative to the cap 100 along with the pier 200.

[0033] In the above structure, when the top of the pier 200 is subjected to lateral force and produces lateral displacement, multiple energy-absorbing components 300 distributed on the periphery of the pier 200 and located between the cap 100 and the pier 200 will respond immediately. The energy-absorbing components 300 are made of materials with high energy-absorbing coefficients such as low-yield point steel, and have good deformation and energy-absorbing capabilities. Through their own plastic deformation, they convert external input energy into energy in the form of strain energy and heat energy for dissipation, thereby effectively reducing the amplitude of the pier 200, reducing the accumulation of internal stress in the structure, and avoiding damage caused by excessive deformation. At the same time, when the pier 200 needs to rotate due to external factors (such as earthquakes causing the main beam to rotate and then drive the bridge pier to twist), the energy-absorbing components 300 can follow the pier 200 to perform appropriate sliding rotation relative to the cap 100, without deformation, and will not bring additional torque to the pier 200. The torsional displacement and lateral deformation of the pier 200 are decoupled, avoiding premature damage to the energy-absorbing device.

[0034] In some specific embodiments, a plurality of energy-absorbing components 300 are arranged in a circular array around the pier 200. With such arrangement, firstly, this layout ensures uniform distribution of force. When the pier 200 is subjected to lateral force or torque, the energy-absorbing components 300 arranged in a circular array can respond simultaneously from all directions, dispersing the concentrated force to the entire system, and avoiding early damage caused by excessive concentration of local stress. This means that both the lateral force in the horizontal direction and the torsional effect on the vertical axis can be effectively absorbed and dissipated, thereby reducing the impact on the core part of the pier 200.

[0035] Secondly, the circular array arrangement improves the dynamic stability of the pier 200. When facing natural disasters such as earthquakes, self-resetting piers often experience complex movement patterns, including swaying, rotation, and even vibration. At this time, the energy-absorbing components 300 evenly distributed around the periphery of the pier 200 can provide all-round support and adjust their positions synchronously with the movement of the pier 200, which not only enhances the structure's ability to resist deformation, but also reduces the vibration amplitude of the structure through a continuous energy absorption process, thereby reducing the risk of collapse of the pier 200.

[0036] In addition, with such a configuration, each energy absorbing component 300 is an independent energy absorbing unit, and they work together to form an efficient energy management system. When the pier 200 is impacted, the energy absorbing component 300 can be quickly activated and begin to consume energy, which helps to reduce the total amount of energy transmitted to the pier 200, further protecting the structure from damage. At the same time, when a certain energy absorbing component 300 is damaged, it can be replaced separately.

[0037] Reference Figure 3 and 4 In some embodiments of the present invention, the cap 100 includes a cap body 110 and a track plate 120. A placement groove 111 is provided on the top of the cap body 110. The placement groove 111 is used to limit the pier 200. It should be noted that the shape of the cross section of the placement groove 111 is compatible with the shape of the cross section of the pier 200, and the size of the cross section of the placement groove 111 is larger than the size of the cross section of the pier 200.

[0038] The track plate 120 is arranged inside the placement groove 111. Specifically, the track plate 120 can be fixedly installed inside the placement groove 111, or can be detachably arranged inside the placement groove 111 by means of bolts or the like. The bottom of the pier 200 is located inside the track plate 120. It can be understood that the track plate 120 is an annular structure with a hole 122 in the middle. The function of the hole 122 is to provide an escape space for the installation of the pier 200, so that the bottom of the pier 200 can contact the bottom of the placement groove 111. It should be noted that a gap is provided between the pier 200 and the inner wall of the hole 122. Such an arrangement can allow the pier 200 to have a certain activity space in movement modes such as swinging and twisting, so as to avoid the impact of the anti-seismic performance due to collision, friction and other reasons between the pier 200 and the track plate 120.

[0039] The track plate 120 is provided with a guide rail 121. Specifically, the guide rail 121 is opened on the top of the track plate 120. The guide rail 121 is arranged along the top surface contour of the track plate 120, that is, when the track plate 120 is circular, the guide rail 121 is also circular; when the track plate 120 is square, the guide rail 121 is also square. The energy-absorbing component 300 is slidably arranged on the guide rail 121. Specifically, one end of the energy-absorbing component 300 is slidably arranged inside the guide rail 121, and the other end is detachably connected to the pier 200 by bolts.

[0040] In the above structure, the placement groove 111 provided on the top of the platform body 110 not only defines the position of the pier 200, ensuring that it can remain stable when subjected to lateral force, but also provides a precise space for the installation of the track plate 120. The track plate 120 is fixed inside the placement groove 111, and the bottom of the pier 200 is located in the track plate 120. This layout enables the pier 200 to rotate along the guide rail 121 on the track plate 120 when subjected to torque in the axial direction.

[0041] Secondly, the guide rail 121 provided on the track plate 120 is combined with the energy absorbing component 300 slidingly provided thereon to form an efficient energy absorption and dissipation system. When the pier 200 rotates due to external loads, these energy absorbing components 300 can slide appropriately on the guide rail 121 and adjust their positions according to actual needs, thereby effectively responding to forces in different directions. This dynamic adjustment mechanism not only allows the energy absorbing component 300 to provide necessary support under the action of lateral forces, but also can rotate with the pier 200 during the torsion of the pier 200, further dispersing and consuming the extra energy caused by the torsion.

[0042] In some embodiments of the present invention, the cap 100 further includes a limiting component, which is disposed at the top of the guide rail 121, and the energy absorbing component 300 passes through the limiting component, and the limiting component is used to prevent the energy absorbing component 300 from being separated from the guide rail 121. The limiting component limits the deformation of the energy absorbing component 300 in the vertical direction, and when the pier 200 generates a swaying behavior, the energy absorbing component 300 can be deformed in the vertical direction, and the deformation of the energy absorbing component 300 can ensure that the energy input by the earthquake is effectively dissipated, thereby achieving the effect of ensuring the overall safety of the structure.

[0043] Specifically, when the bridge pier encounters natural disasters such as earthquakes, which cause severe vibration or torsion, the pier column 200 and the energy-absorbing components 300 around it will experience complex dynamic changes. In this case, since the top of the guide rail 121 is open, under extreme conditions, the energy-absorbing component 300 can easily detach from the top of the guide rail 121, thereby causing failure. By arranging the limiting component at the top of the guide rail 121, the top of the guide rail 121 can be closed, but since the energy-absorbing component 300 passes through the limiting component, it will not prevent the energy-absorbing component 300 from sliding. Such a setting not only prevents the energy-absorbing component 300 from detaching from the guide rail 121, but also ensures that the energy-absorbing component 300 can slide normally.

[0044] Reference Figure 2 and Figure 5 In some embodiments of the present invention, the limiting component includes a first limiting plate 130 and a second limiting plate 140. The first limiting plate 130 is arranged on the track plate 120, and the first limiting plate 130 at least partially extends to the top of the guide rail 121 on one side of the track plate 120; the second limiting plate 140 is arranged on the track plate 120, and the second limiting plate 140 at least partially extends to the top of the guide rail 121 on the other side of the track plate 120.

[0045] It can be understood that if the center of the platform body 110 is defined as the inside and the outside of the platform body 110 is defined as the outside, the first limiting plate 130 is located on the inside of the energy consuming component 300, and the second limiting plate 140 is located on the outside of the energy consuming component 300. There is a gap between the two, and the energy consuming component 300 can pass through the gap to connect with the pier 200. Specifically, the track plate 120 is provided with a first limiting hole 123, the first limiting plate 130 is provided with a second limiting hole 131, the second limiting plate 140 is provided with a third limiting hole 141, the pier 200 is provided with a fourth limiting hole 212, and the energy consuming component 300 is provided with a fifth limiting hole 350.

[0046] Among them, the first limiting hole 123 is arranged corresponding to the second limiting hole 131 and the third limiting hole 141, that is, when the first limiting plate 130 needs to be installed on the track plate 120, the corresponding first limiting hole 123 of the second limiting hole 131 can be penetrated by a high-strength bolt; when the second limiting plate 140 needs to be installed on the track plate 120, the third limiting hole 141 and the corresponding first limiting hole 123 can be penetrated by a high-strength bolt.

[0047] The fourth limiting hole 212 and the fifth limiting hole 350 are arranged correspondingly. When the energy absorbing component 300 needs to be connected to the pier 200, it is only necessary to pass the high-strength bolts through the fourth limiting hole 212 and the fifth limiting hole 350. Through the above bolt connection, the present invention can replace the damaged energy absorber after the earthquake to ensure the normal operation of the bridge during the next earthquake.

[0048] Reference Figure 6 and Figure 7 In some embodiments of the present invention, the pier 200 includes a pier body 210 and a prestressed component 220. The side of the pier body 210 is connected to the energy dissipation component 300. The bottom end of the pier body 210 is located in the placement groove 111. A first prestressed pipe 211 is provided inside the pier body 210. The prestressed component 220 passes through the first prestressed pipe 211, and the bottom end of the prestressed component 220 extends to the inside of the platform body 110. The prestressed component 220 includes at least two anchors 221, and a plurality of stress ribs 222 are provided between the two anchors 221.

[0049] In the above structure, the overall performance and earthquake resistance of the self-resetting pier are further enhanced by the combination of the pier body 210 and the prestressed component 220. The pier body 210 is not only connected to the energy-absorbing component 300 on its side, ensuring that it can effectively absorb and dissipate energy under the action of lateral force, but also its bottom end is located in the placement groove 111 on the top of the platform body 110, providing a stable foundation support for the pier 200. In addition, the first prestressed pipe 211 set inside the pier body 210 runs through the entire structure, and the prestressed component 220 passes through this pipe, and its bottom end extends to the inside of the platform body 110. This design not only strengthens the rigidity of the pier 200 itself, but also improves the stability of the entire structure by prestressing.

[0050] Specifically, when the pier 200 is subjected to external loads, such as lateral forces caused by earthquakes or torque along the axis, the presence of the prestressed component 220 enables the pier 200 to maintain a certain elastic recovery force while withstanding large deformation. This means that even under extreme conditions, the pier 200 can quickly return to its initial state, thereby ensuring the overall safety and functional integrity of the bridge structure. At the same time, since the prestressed component 220 extends from the pier body 210 to the inside of the platform body 110, this connection method effectively combines the pier 200 with the foundation tightly, further enhancing the overall rigidity of the structure.

[0051] Reference Figure 3 and Figure 6 In some embodiments of the present invention, a second prestressed pipe 112 is provided at the bottom of the placement groove 111, and the second prestressed pipe 112 passes through the platform body 110. The second prestressed pipe 112 has the same diameter as the first prestressed pipe 211, and the second prestressed pipe 112 is coaxially arranged with the first prestressed pipe 211. When the stress rib 222 is installed on the platform body 110, the stress rib 222 needs to pass through the second prestressed pipe 112, and the anchor 221 at the bottom needs to be anchored at the bottom end of the platform body 110.

[0052] In the above structure, this design not only enhances the integrity of the structure, but also optimizes the force transmission path, ensuring that the prestressed component 220 can smoothly extend from the pier body 210 to the inside of the platform body 110, forming a continuous and stable prestressed system. When the pier 200 is subjected to lateral force or torque, the prestressed component 220 runs through the coaxially arranged second prestressed pipes 112 and the first prestressed pipes 211, providing necessary prestressed support for the entire structure. Such an arrangement enables the prestressed component 220 to maintain a good linear state when the pier 200 is displaced or rotated, thereby effectively controlling the deformation degree of the pier 200 and ensuring its ability to return to its initial position. In addition, since the second prestressed pipe 112 is coaxially arranged with the first prestressed pipe 211, the prestressed component 220 can distribute stress more evenly, avoiding the problem of local stress concentration, and further improving the ability of the structure to resist complex stress conditions.

[0053] In some possible embodiments, the first prestressed pipe 211 and the second prestressed pipe 112 are both arranged at their respective center positions, so that when the pier 200 is twisted, the prestressed component 220 is located at the torsion center of the pier 200, thereby avoiding the shearing effect on the prestressed component 220 when the interface between the pier 200 and the platform 100 is displaced due to torsion, thereby protecting the prestressed component 220.

[0054] Reference Figure 8 In some embodiments of the present invention, the energy absorbing component 300 includes a slider 310 and an arc-shaped yield energy absorber (the damper as a whole can be regarded as an arc segment cut out from the annular tube, with an arc-shaped cross section and an outer contour that presents an arc-shaped annular tube segment as a whole), the slider 310 is slidably arranged on the guide rail 121, one end of the arc-shaped yield energy absorber is connected to the slider 310, and the other end is connected to the pier 200, the arc-shaped yield energy absorber is a U-shaped structure, and the width of the arc-shaped yield energy absorber gradually decreases from the end connected to the slider 310 to the end connected to the pier 200. It can be understood that the arc-shaped yield energy absorber is a fan-shaped structure in a flat state. That is, the yield damper that is fan-shaped in a flat state is bent into an arc shape, which constitutes an arc-shaped yield energy absorber.

[0055] Specifically, the arc ring yield energy absorber includes an outer arc segment 320, an arch segment 330 and an inner arc segment 340, wherein the outer arc segment 320 is connected to the slider 310. The slider 310, the outer arc segment 320, the arch segment 330 and the inner arc segment 340 can be integrally formed. The fifth limiting hole 350 is provided on the inner arc segment 340, and the inner arc segment 340 is connected to the pier body 210. The arc ring yield energy absorber can be made of materials such as low yield point steel, with low material cost, simple installation method, and saved construction cost.

[0056] In the above structure, the U-shaped structural design not only enhances the resistance of the pier 200 to lateral forces and torques, but also optimizes the energy absorption and dissipation mechanism. This U-shaped structure allows the energy absorber to produce appropriate plastic deformation when subjected to external forces, thereby effectively absorbing and dispersing the impact energy caused by natural disasters such as earthquakes. When the pier 200 is displaced or rotated due to external loads, the arc-shaped yield energy absorber can slide freely along the guide rail 121 on the track plate 120 while maintaining connection with the side of the pier body 210, ensuring the flexibility and stability of the entire system. Due to the U-shaped design of the energy absorber, it can consume excess energy through its own yield deformation when subjected to greater stress, reducing the force directly transmitted to the core part of the pier 200, thereby protecting the pier 200 from excessive damage.

[0057] In some embodiments of the present invention, a polytetrafluoroethylene plate is provided on the top surface of the cap 100, and a stainless steel plate is provided on the bottom surface of the pier 200. The torque of the pier 200 is only the torque generated by the friction between its bottom surface and the cap 100. Since the friction coefficient of the polytetrafluoroethylene plate is very small, the internal torque of the pier 200 can be kept small when the pier 200 is twisted. It should be noted that the top surface of the cap 100 is the side where the cap 100 contacts the pier 200, and the bottom surface of the pier 200 is the side where the bottom surface of the pier 200 contacts the cap 100.

[0058] The following provides the production methods of each part.

[0059] The steel cage is tied up during the pouring of the pier column 200 according to the actual structural requirements, and the nuts are welded and lengthened by erecting steel bars at the designed fourth limiting hole 212 position to form a whole with the steel cage, and then concrete is poured to form the fourth limiting hole 212.

[0060] The track plate 120 is made of steel, and after being made, a guide rail 121 is milled out on the top thereof and a first limit hole 123 is machined out. The specific installation method is as follows: first, the steel cage of the cap 100 is tied according to actual requirements, and a corresponding space is reserved for the track plate 120 at the center of the top of the cap 100. Then, the track plate 120 is installed, and the track plate 120 and the steel cage of the cap 100 are welded into a whole, and finally, concrete is poured to complete the installation of the track plate 120 and form the placement groove 111.

[0061] The energy dissipation component 300 can be made of steel with a high energy dissipation coefficient and a low yield point, and after being made, a fifth limiting hole 350 is drilled at the inner arc section 340. The first limiting plate 130 and the second limiting plate 140 are made by cutting steel plates, and then a second limiting hole 131 and a third limiting hole 141 are drilled on the two plates respectively.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-resetting bridge pier adapted to torsion, characterized in that: include: Platform (100); A pier column (200) is arranged on the cap (100); A plurality of energy-absorbing components (300) are distributed at intervals on the periphery of the pier column (200), and the energy-absorbing components (300) are located between the cap (100) and the pier column (200); when the pier column (200) is twisted, the energy-absorbing components (300) rotate relative to the cap (100) along with the pier column (200).

2. The self-resetting bridge pier capable of adapting to torsion according to claim 1, characterized in that: The support platform (100) comprises: The support body (110) is provided with a placement groove (111) on the top, and the placement groove (111) is used to limit the position of the pier column (200); A track plate (120) is arranged inside the placement groove (111), and the bottom of the pier (200) is located inside the track plate (120); the track plate (120) is provided with a guide rail (121), and the energy-consuming component (300) is slidably arranged on the guide rail (121).

3. The self-resetting bridge pier capable of adapting to torsion according to claim 2, characterized in that: The support platform (100) further comprises a limiting component, the limiting component is arranged on the top of the guide rail (121), the energy-consuming component (300) passes through the limiting component, and the limiting component is used to prevent the energy-consuming component (300) from detaching from the guide rail (121).

4. The self-resetting bridge pier capable of adapting to torsion according to claim 3, characterized in that: The limiting component comprises: A first limiting plate (130) is provided on the track plate (120), wherein the first limiting plate (130) at least partially extends to the top of the guide rail (121) on one side of the track plate (120); The second limiting plate (140) is provided on the track plate (120), and the second limiting plate (140) at least partially extends to the top of the guide rail (121) located on the other side of the track plate (120).

5. The self-resetting bridge pier capable of adapting to torsion according to claim 2, characterized in that: The pier (200) comprises: A pier column body (210), the side of the pier column body (210) being connected to the energy-consuming component (300), the bottom end of the pier column body (210) being located in the placement groove (111), and a first prestressed pipe (211) being provided inside the pier column body (210); A prestressed component (220) passes through the first prestressed pipe (211), and a bottom end of the prestressed component (220) extends into the interior of the support platform body (110).

6. The self-resetting bridge pier capable of adapting to torsion according to claim 5, characterized in that: The prestressed component (220) comprises at least two anchors (221), and a plurality of stress ribs (222) are arranged between the two anchors (221).

7. The self-resetting bridge pier capable of adapting to torsion according to claim 5 or 6, characterized in that: A second prestressed pipe (112) is provided at the bottom of the placement groove (111); the second prestressed pipe (112) has the same diameter as the first prestressed pipe (211), and the second prestressed pipe (112) and the first prestressed pipe (211) are coaxially arranged.

8. The self-resetting bridge pier capable of adapting to torsion according to claim 2, characterized in that: The energy dissipation component (300) comprises a slider (310) and an arc-shaped yielding energy dissipator. The slider (310) is slidably disposed on the guide rail (121). One end of the arc-shaped yielding energy dissipator is connected to the slider (310), and the other end is connected to the pier (200).

9. The self-resetting bridge pier capable of adapting to torsion according to claim 8, characterized in that: The cross section of the arc-shaped yielding energy absorber is a U-shaped structure, and the width of the arc-shaped yielding energy absorber gradually decreases from the end connected to the slider (310) to the end connected to the pier (200).

10. The self-resetting bridge pier capable of adapting to torsion according to any one of claims 1 to 9, characterized in that: A polytetrafluoroethylene plate is provided on the top surface of the base (100), and a stainless steel plate is provided on the bottom surface of the pier (200).

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