Self-resetting anti-impact layered assembly lattice type pier

Abstract

The invention discloses a self-resetting anti-impact layered assembly lattice type pier, and belongs to the field of lattice type piers, the self-resetting anti-impact layered assembly lattice type pier comprises a pier body, an energy dissipation resetting assembly and a bottom energy dissipation connecting piece, the pier body comprises a plurality of pier bodies which are sequentially arranged from top to bottom, and the energy dissipation resetting assembly is installed between the two pier bodies; the bottom energy dissipation connecting piece is installed at the lower end of the pier body. Structural deformation caused by impact can be concentrated on the contact face between the top connecting pieces and the contact face between the bottom plate and the foundation, huge deformation and serious damage of a main body structure are avoided, and the structure can be used for rapid first-aid repair when disasters happen, and it is guaranteed that the traffic lifeline is smooth.

Description

Technical Field

[0001] The invention belongs to the field of lattice bridge piers, and in particular relates to a self-resetting anti-impact layered assembly lattice bridge pier. Background Art

[0002] Bridges play a key role in disaster relief and transportation. The economic losses and casualties caused by the damage and interruption of transportation lifelines are incalculable.

[0003] At present, bridge piers mainly utilize the good impact toughness of steel to transform and dissipate energy through structural vibration, plastic hinges and thermal energy. However, structural vibration has a great impact on the traffic on the upper road surface. At the same time, under the strong effect of impact, once plastic hinges are generated, the stability and bearing capacity of the bridge piers will drop sharply.

[0004] Chinese patent application number UN202110962995.X discloses an energy-absorbing seismic pier, including a fixed pier and a connecting pier, which are flexibly connected by torsion springs and a base. At the same time, the outside of the pier is covered with a flexible inner core buffer layer and a multi-layer pipe-segment rigid surface protective layer, both of which are fixed to the pier by embedded steel bars. The protective layer is composed of multiple layers of offset butt-jointed arc-shaped pipe segments, which are firmly connected by transverse and longitudinal connecting bolts to form an effective protection system that effectively resists the impact of rolling stones. However, the construction period of this structure is relatively long. Once the pier fails, it is not easy to replace and repair, and it needs to be completely rebuilt.

[0005] Chinese patent application number UN202011579614.1 discloses an energy-absorbing swing pier, which realizes the consumption of seismic energy and the limitation of pier swinging through the deflection movement of the pier and the arc block in the arc groove and the intervention of the swing mechanism. The swing mechanism provides support and buffering when the pier swings greatly, and does not interfere with small swings or thermal expansion and contraction. In addition, the details such as the decreasing diameter design of the pier hole, the connection of the slider slide groove, and the clamping connection of the limit cylinder and limit column are optimized. However, the sliding connection, the coordination of the articulated connecting rod and the slider of the structure may require regular maintenance and inspection, and strict quality control and technical requirements are required during construction to meet the expected results, which will bring more cost and construction period.

[0006] Therefore, there is an urgent need for a bridge pier that can avoid huge deformation and serious damage to the main body when impacted, and can achieve rapid repair when a disaster occurs. Summary of the invention

[0007] The purpose of the present invention is to provide a self-resetting, impact-resistant, layered assembled lattice bridge pier, which can concentrate the structural deformation caused by impact on the contact surface between the top connecting parts and the contact surface between the bottom plate and the foundation, avoiding huge deformation and serious damage to the main structure, and can be used for rapid repairs when a disaster occurs to ensure smooth traffic lifelines.

[0008] In order to achieve the purpose of the present invention, the technical solution adopted is: a self-resetting anti-impact layered assembled lattice pier, including a pier body, an energy dissipation and reset assembly and a bottom energy dissipation connector, the pier body includes a plurality of pier bodies arranged in sequence from top to bottom, the energy dissipation and reset assembly is installed between two pier bodies; the bottom energy dissipation connector is installed at the lower end of the pier body.

[0009] Furthermore, the pier body includes four columns in a rectangular array, and two adjacent columns are connected with cross-arranged oblique web members and horizontally connected horizontal web members. Two adjacent columns are connected by two oblique web members and two horizontal web members to form a stable pier body. The energy dissipation and reset assembly is installed between the columns located on the same straight line in two adjacent pier bodies.

[0010] Since there are two horizontal web members and two diagonal web members between two adjacent columns, there are eight horizontal web members and eight diagonal web members in a pier. The horizontal web and the diagonal web members are both equilateral angle steels. In order to facilitate the installation of the horizontal web and the diagonal web members, bolt holes are reserved at both ends of the horizontal web and the diagonal web members. The multiple bolt holes at the ends of the horizontal web and the multiple bolt holes at the ends of the diagonal web members can be arranged along their axial direction or width direction, or in a rectangular array.

[0011] Furthermore, the column includes two oppositely arranged channel steels, a plurality of gusset plates are connected between the wing plates on the same side of the two channel steels, and the plurality of gusset plates are evenly spaced apart along the axial direction of the channel steels.

[0012] When the column is assembled, the openings of the two channel steels are opposite to each other, and the two ends of the gusset plate are respectively welded to the wing plates of the two channel steels, so that the gusset plate and the two channel steels are connected together to form a complete column, so that the structural strength of the column itself is guaranteed.

[0013] When the gusset plate is welded, the two ends of the gusset plate are flush with the webs of the two channel steels respectively, so that the surface of the column is smoother.

[0014] Furthermore, there are two horizontal web members between two adjacent columns, the two horizontal web members are located on both sides of the crossed oblique web members, and the two horizontal web members and the two crossed oblique web members together form two relative triangular structures.

[0015] Furthermore, the horizontal web members between two adjacent columns are oriented in opposite directions, that is, the opening of one horizontal web member is oriented toward the outside of the column, and the opening of the other horizontal web member is oriented toward the inside of the column; at the same time, for the four horizontal web members located on the same horizontal plane, the directions of two adjacent horizontal web members are opposite, and the directions of two opposite horizontal web members are the same.

[0016] Furthermore, a node plate for connecting the oblique web members and the horizontal web members is also installed on the column. Before the node plate is installed, in order to facilitate the installation of the node plate, an installation position of the node plate is reserved on the channel steel, that is, no welding of a gusset plate is required at the installation position.

[0017] When selecting the node plate, the shape of the node plate can be T-shaped; when the node plate and the gusset plate are located on the same side of the column, the wing plate size of the node plate is the same as that of the gusset plate; when the node plate is located on the web of the channel steel in the column, the wing plate width of the node plate is the same as the web width of the channel steel.

[0018] In addition, the height of the node plate is the same as that of the gusset plate, and bolt holes of the same size and position as those on the ends of the diagonal web members and the ends of the horizontal web members are reserved on the web of the node plate. When installing the diagonal web members and the horizontal web members, the bolt holes on the ends of the diagonal web members and the horizontal web members are aligned with the bolt holes on the node plate, and then fixed with high-strength bolts.

[0019] Since there are two horizontal web members and two diagonal web members connected to the columns, and the node plate is connected to the diagonal web plate and the horizontal web member at the same time, and since the four columns are arranged in a rectangular array, node plates are installed at the upper and lower ends of two faces of one column, that is, there are four node plates on one column, and the four node plates are respectively located at the two ends of the column, and the distances between the node plates located at the two ends of the column and the end faces of the two ends of the column are equal.

[0020] Furthermore, the energy dissipation and reset assembly includes U-shaped steel plates respectively fixed to two columns, the two U-shaped steel plates are staggered and interlocked, and the two U-shaped steel plates also have limit stops that interlock with each other; at least one viscoelastic material is installed between the interlocking ends of the two U-shaped steel plates and between the interlocking end of one U-shaped steel plate and the inner wall of the other U-shaped steel plate.

[0021] The two ends of the U-shaped steel plate are parallel, and the length of the sides of the two ends of the U-shaped steel plate is one end longer and the other end shorter, that is, one end of the U-shaped steel plate is the long side, and the other end of the U-shaped steel plate is the short side, and the short side of the U-shaped steel plate is inserted into the opening of the other U-shaped steel plate. After the two U-shaped steel plates are buckled together, the two ends of the U-shaped steel plate are parallel to the two ends of the other U-shaped steel plate, that is, the energy dissipation and reset assembly has four parallel sides.

[0022] The viscoelastic material 1 is installed between two edges parallel to each other, that is, the number of the viscoelastic material 1 in the energy dissipation and reset assembly is at least three.

[0023] In order to prevent the two U-shaped steel plates from being easily pulled out after being interlaced, a limit stopper extending toward the long side of the other U-shaped steel plate is set on the short side of the U-shaped steel plate, and a limit stopper extending toward the short side of the other U-shaped steel plate is set on the long side of the other U-shaped steel plate. Through the cooperation of the two limit stops, the two U-shaped steel plates cannot be pulled out from the locking direction. It should be noted that the locking direction here is not the mutual insertion direction when the energy dissipation and reset components are assembled, but the direction in which the short side of the U-shaped steel plate is inserted into the opening of the other U-shaped steel plate.

[0024] Since the limit stop on the short side of a U-shaped steel plate needs to be engaged with the limit stop on the long side of another U-shaped steel plate, the limit stop on the long side of the other U-shaped steel plate needs to be engaged with the limit stop on the short side of the U-shaped steel plate, that is, the actual short side of the U-shaped steel plate and the long side of the U-shaped steel plate both have limit stops, and the limit stops on the short side of the U-shaped steel plate and the long side of the U-shaped steel plate extend in the same direction.

[0025] Furthermore, a plurality of groups of springs are connected between the buckling end surface of one of the U-shaped steel plates and the inner wall of another U-shaped steel plate; a plurality of bolts are also passed through the buckling end of the U-shaped steel plate, one end of the bolt is fixed to the other U-shaped steel plate, the other end of the bolt is tightened with a nut, and a disc spring is also sleeved on the bolt to press between the buckling end of the U-shaped steel plate and the other U-shaped steel plate, and between the buckling end of the U-shaped steel plate and the nut.

[0026] One end of the spring is connected to the short side end face of the U-shaped steel plate, and the other end of the spring is connected to the middle section of another U-shaped steel plate, and the spring is in a horizontal state. The springs here are in multiple groups, and the multiple groups of springs are arranged at intervals along the width direction of the U-shaped steel plate.

[0027] The bolt 1 penetrates the short side of the U-shaped steel plate along the thickness direction of the U-shaped steel plate, the bolt 1 extends in the vertical direction, and the bolt 1 can reciprocate on the short side of the U-shaped steel plate, one end of the bolt 1 is fixed to the long side of the other U-shaped steel plate, and the nut is tightened on the end of the bolt that is not fixed; at the same time, the bolt 1 is sleeved with a disc spring 1 at both ends after penetrating the short side of the U-shaped steel plate. In addition, the disc spring 1 installed by the bolt 1 can be multiple groups, and the multiple groups of disc springs 1 are arranged at intervals along the width direction of the U-shaped steel plate. Of course, the number of groups of disc springs 1 arranged at intervals along the width direction of the U-shaped steel plate and the number of groups of spring edges arranged at intervals along the width direction of the U-shaped steel plate can be equal or different.

[0028] During the installation process of bolt 1, in order to avoid collision of bolt 1 with the spring when bolt 1 moves up and down on the U-shaped steel plate, the position of bolt 1 can be selected during the design so that bolt 1 corresponds to the gap between two adjacent springs.

[0029] Furthermore, the U-shaped steel plate also has a sleeve one, the end of the column is inserted and fixed in the sleeve one, and the plug-in end of the column is fixed to the sleeve one by high-strength bolts; at the same time, a stiffening rib one is arranged around the sleeve one and between the U-shaped steel plate, and the stiffening rib one is a right-angled triangle, one right-angled side of the stiffening rib one is fixed to the sleeve one, and the other right-angled side of the stiffening rib one is fixed to the U-shaped steel plate.

[0030] Furthermore, the bottom energy dissipation connector includes a bottom plate I and a bottom plate II that are parallel to each other, and at least one viscoelastic material II and multiple sets of disc springs II are installed between the bottom plate I and the bottom plate II. When there is one viscoelastic material II between the bottom plate I and the bottom plate II, the viscoelastic material II is located at the center between the bottom plate I and the bottom plate II; when there are multiple viscoelastic materials II between the bottom plate I and the bottom plate II, the multiple viscoelastic materials II are evenly arranged between the bottom plate I and the bottom plate II; at the same time, the multiple sets of disc springs II are respectively located on opposite sides or around the viscoelastic material II.

[0031] In order to facilitate the installation of disc spring 2, a bolt 2 extending vertically upward is fixed on the base plate II. The upper end of the bolt 2 passes through the base plate I, and the bolt 2 can move up and down relative to the base plate I, and the disc spring 2 is mounted on the bolt 2.

[0032] Furthermore, the base plate I is also provided with a sleeve II, the end of the column is inserted and fixed in the sleeve II, and the plug-in end of the column is fixed to the sleeve I by high-strength bolts; at the same time, stiffening ribs II are arranged around the base plate I and are formed in the form of a right-angled triangle, one right-angled side of stiffening rib II is fixed to the sleeve I, and the other right-angled side of stiffening rib II is fixed to the base plate I.

[0033] Furthermore, a top connector is installed on the top of the pier body, and the top connector includes a sleeve three which is sleeved on the end of the column, a top plate is installed on the upper end of the sleeve three, and stiffening ribs three are installed around the top plate and the sleeve three.

[0034] The top connecting piece is integrally formed in the factory, and a plurality of bolt holes are reserved on the top plate for easy connection with the upper structure. Bolt holes are reserved on the side surfaces of sleeve three, and threaded holes corresponding to the threaded holes on sleeve three are also reserved on the channel steel in the column. When sleeve three is installed on the column and the threaded holes on sleeve three correspond to the threaded holes on the channel steel in the column, high-strength bolts are used to fix sleeve three to the channel steel in the column.

[0035] The beneficial effects of the present invention are:

[0036] 1. Efficient assembly, showing extremely high application value in disaster rescue and emergency recovery. The design follows the core concept of modularization and prefabrication, disassembling the complex pier structure into several standardized, easy-to-manufacture modular units, which are convenient for long-distance transportation to the disaster site and rapid assembly. High-strength bolt connection can be used as the main connection form, and it has excellent mechanical properties and convenient installation characteristics, ensuring that the expected effect of the pier is as little affected by the quality of on-site construction as possible. When a disaster occurs, it can quickly respond to rescue needs and build a stable bridge in a short time, providing strong support for the transportation of rescue materials, the transfer of the wounded and the evacuation of personnel.

[0037] 2. It has good impact and seismic resistance, and has significant energy dissipation effect. Compared with reinforced concrete bridge piers, steel allows larger deformation due to its excellent impact toughness and plasticity, so that steel bridge piers can effectively withstand dynamic loads and absorb more impact energy. The spring and viscoelastic material 1 in the energy dissipation and reset assembly are used to consume and absorb external shear force, while the disc spring 1 and viscoelastic material are used to consume and absorb external bending moment. Disc spring 1 also has the function of energy storage, which assists the viscoelastic material to achieve self-reset. A limit block is set in the energy dissipation and reset assembly to prevent the energy dissipation and reset assembly from detaching from the upper and lower parts during impact, resulting in energy dissipation failure. The bottom energy dissipation connector includes viscoelastic material 2 and disc spring 2, which has the effect of energy dissipation self-reset. At the same time, the energy dissipation and reset assembly and the bottom energy dissipation connector can effectively shorten the duration of vibration and prevent fatigue damage to steel.

[0038] 3. Good applicability and interchangeability. Piers of different heights can be combined according to actual needs to meet a variety of engineering application scenarios. Each module unit follows a unified size standard and interface specification. In actual engineering, the appropriate pier height is selected and combined according to the design height, load-bearing requirements, and topography of the bridge. In the event of damage to a section of the pier, it does not need to be completely dismantled and rebuilt like traditional piers, and can be quickly and accurately replaced. It saves precious disaster relief time and reduces a lot of construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings illustrate exemplary embodiments of the present invention and together with the description serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.

[0040] Figure 1 It is a structural schematic diagram of the self-resetting anti-impact layered assembly lattice bridge pier provided by the present invention;

[0041] Figure 2 It is a structural diagram of the main body of the pier;

[0042] Figure 3 is a schematic diagram of the structure of the top connecting member;

[0043] Figure 4 It is a structural schematic diagram of the energy dissipation reset component;

[0044] Figure 5 It is a schematic diagram of the structure of the energy dissipation and reset component after being disassembled;

[0045] Figure 6 It is a structural schematic diagram of an energy dissipation connector.

[0046] Markings and corresponding parts names in the attached drawings:

[0047] 1. The main body of the pier;

[0048] 101, pier body, 102, channel steel, 103, gusset plate, 104, horizontal web member, 105, oblique web member, 106, node plate;

[0049] 2. Top connector;

[0050] 201, top plate, 202, sleeve three, 203, stiffening rib three;

[0051] 3. Energy dissipation reset component;

[0052] 301. a sleeve, 302. a stiffening rib, 303. a U-shaped steel plate, 304. a viscoelastic material, 305. a disc spring, 306. a spring, 307. a limit stopper;

[0053] 4. Bottom energy dissipation connector;

[0054] 401. Base plate I, 402. Base plate II, 403. Sleeve II, 404. Stiffening rib II, 405. Viscoelastic material II, 406. Disc spring II. DETAILED DESCRIPTION

[0055] The present invention is further described in detail below in conjunction with the accompanying drawings and implementation methods. It is understood that the specific implementation methods described herein are only used to explain the relevant content, rather than to limit the present invention. It is also necessary to explain that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings.

[0056] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0057] like Figure 1As shown, the present invention provides a self-resetting anti-impact layered assembled lattice pier, comprising a pier body 1, an energy dissipation and resetting assembly 3 and a bottom energy dissipation connector 4, wherein the pier body 1 comprises a plurality of pier bodies 101 arranged in sequence from top to bottom, and the energy dissipation and resetting assembly 3 is installed between two pier bodies 101; the bottom energy dissipation connector 4 is installed at the lower end of the pier body 1.

[0058] During installation, the bottom energy dissipation connector 4 is fixedly installed on the ground, and multiple pier bodies 101 are overlapped and installed on the bottom energy dissipation connector 4 in sequence, and energy dissipation reset components 3 are installed between two adjacent pier bodies 101, that is, two adjacent pier bodies 101 are connected by energy dissipation reset components 3. Specifically, when there are two pier bodies 101, the energy dissipation reset components 3 are one group; when there are two pier bodies 101, the energy dissipation reset components 3 are two groups; that is, the number of groups of energy dissipation reset components 3 = the number of pier bodies 101-1.

[0059] like Figure 2 As shown, the pier body 101 includes four columns, which are arranged in a rectangular array, and two adjacent columns are connected with cross-arranged oblique web members 105 and horizontally connected horizontal web members 104, that is, there are two oblique web members 105 between two adjacent columns; at the same time, there are also two horizontal web members 104 between two adjacent columns, and the two horizontal web members 104 are respectively located on the upper and lower sides of the two crossed oblique web members 105. At this time, the two horizontal web members 104 and the two crossed oblique web members 105 jointly form two relative triangular structures, and the two adjacent columns and the two oblique web members 105 and the two horizontal web members 104 located between the two adjacent columns cooperate to form a surface. In the pier body 101, the two adjacent columns are connected by two oblique web members 105 and two horizontal web members 104 to form a stable rectangular frame pier body 101. The energy dissipation and reset assembly 3 is installed between the columns located on the same straight line in the two adjacent pier bodies 1.

[0060] Since there are two horizontal web members 104 and two diagonal web members 105 between two adjacent columns, there are eight horizontal web members 104 and eight diagonal web members 105 in one pier body 101. The horizontal webs and diagonal web members 105 are both equilateral angle steels. To facilitate the installation of the horizontal webs and the diagonal web members 105, bolt holes are reserved at both ends of the horizontal webs and both ends of the diagonal web members 105. The multiple bolt holes at the ends of the horizontal webs and the multiple bolt holes at the ends of the diagonal web members 105 can be arranged along their axial direction or width direction, or in a rectangular array.

[0061] In the present invention, when two oblique webs between two adjacent columns are installed, the intersection of the two oblique webs can be fixed or not as required. When the intersection of the two oblique webs needs to be fixed, the intersection of the two oblique webs can be directly fixed by welding or bolts.

[0062] The column includes two oppositely arranged channel steels 102 with a certain distance between two adjacent channel steels 102; at the same time, a plurality of gusset plates 103 are connected between the wing plates on the same side of the two channel steels 102, and the two ends of the gusset plates 103 are respectively welded and fixed to the two channel steels 102.

[0063] When the column is assembled, the openings of the two channel steels 102 are opposite to each other, and the two ends of the gusset plate 103 are respectively welded to the wing plates of the two channel steels 102, so that the gusset plate 103 and the two channel steels 102 are connected together to form a complete column, so that the structural strength of the column itself is guaranteed.

[0064] When welding the gusset plates 103 , it should be noted that the spacing between the multiple gusset plates 103 on the same side of the two channel steels 102 is uniform, and the two ends of the gusset plates 103 are respectively flush with the webs of the two channel steels 102 to make the surface of the column smoother.

[0065] When the horizontal web members 104 between two adjacent columns are installed, the two horizontal web members 104 face opposite directions, that is, the opening of one horizontal web member 104 faces the outside of the column, and the opening of the other horizontal web member 104 faces the inside of the column; at the same time, among the four horizontal web members 104 located on the same horizontal plane, the directions of two adjacent horizontal web members 104 are also opposite, and the directions of two opposite horizontal web members 104 are the same. In the present invention, the installation method of the horizontal web members 104 makes the internal force distribution and transmission relatively uniform.

[0066] A node plate 106 for connecting the oblique web members 105 and the horizontal web members 104 is also installed on the column. In order to avoid interference between the node plate 106 and the gusset plate 103, the installation position of the node plate 106 is staggered from the installation position of the gusset plate 103, that is, when the node plate 106 is installed on the web of the channel steel 102, the gusset plate 103 can be installed normally. When the node plate 106 is installed together on the flanges on the same side of two channel steels 102, the gusset plate 103 does not need to be welded to the installation position of the node plate 106.

[0067] When selecting the node plate 106, the shape of the node plate 106 can be T-shaped; when the node plate 106 and the gusset plate 103 are located on the same side of the column, the flange size of the node plate 106 is the same as that of the gusset plate 103; when the node plate 106 is located on the web of the channel steel 102 in the column, the flange width of the node plate 106 is the same as the web width of the channel steel 102, and the height of the node plate 106 is the same as the height of the gusset plate 103.

[0068] In addition, bolt holes of the same size and position as the bolt holes on the ends of the oblique web members 105 and the ends of the horizontal web members 104 are reserved on the web of the node plate 106. When the oblique web members 105 and the horizontal web members 104 are installed, the bolt holes on the ends of the oblique web members 105 and the ends of the horizontal web members 104 are aligned with the bolt holes on the node plate 106, and then fixed with high-strength bolts, so that the pier body 101 forms a stable whole.

[0069] Since there are two horizontal web members 104 and two oblique web members 105 connected to the columns, and the node plates 106 are connected to the oblique web members and the horizontal web members 104 at the same time, and since the four columns are arranged in a rectangular array, node plates 106 are installed at the upper and lower ends of two faces of one column, that is, there are four node plates 106 on one column, and the four node plates 106 are respectively located at the two ends of the column, and the node plates 106 located at the two ends of the column are equidistant from the end faces of the two ends of the column.

[0070] like Figure 4 , Figure 5 As shown, the energy dissipation and resetting component 3 includes U-shaped steel plates 303 respectively fixed to two columns, the two U-shaped steel plates 303 are interlaced and buckled, and the two U-shaped steel plates 303 also have limit blocks 307 that buckle with each other; at least one viscoelastic material 304 is installed between the buckled ends of the two U-shaped steel plates 303 and between the buckled end of one U-shaped steel plate 303 and the inner wall of the other U-shaped steel plate 303.

[0071] In the present invention, the two ends of the U-shaped steel plate 303 are parallel, and the length of the sides of the two ends of the U-shaped steel plate 303 is one end longer than the other end, that is, one end of the U-shaped steel plate 303 is the long side, and the other end of the U-shaped steel plate 303 is the short side, and the short side of the U-shaped steel plate 303 is inserted into the opening of the other U-shaped steel plate 303. After the two U-shaped steel plates 303 are buckled together, the two ends of the U-shaped steel plate 303 are parallel to the two ends of the other U-shaped steel plate 303, that is, the energy dissipation reset component 3 has four parallel sides.

[0072] The viscoelastic material 1 304 is installed between two parallel edges, that is, there are at least three viscoelastic materials 1 304 in the energy dissipation and reset component 3; of course, multiple viscoelastic materials 1 304 can also be installed between two parallel edges of the two U-shaped steel plates 303. At this time, the multiple viscoelastic materials 1 304 between the two parallel edges are evenly arranged.

[0073] By using the viscoelastic material 1 304, when the impact or vibration of the energy dissipation and reset component 3 is transmitted to the viscoelastic material 1 304, or when the viscoelastic material 1 304 is impacted or vibrated, friction and hysteresis occur inside the viscoelastic material 1 304, part of the kinetic energy is converted into heat energy and the amplitude can be effectively reduced. At the same time, the viscoelastic material 1 304 in the present invention is a shape memory material, which can return to its original shape after vibration to maintain the stability of the structure.

[0074] In order to ensure that the energy dissipation and reset assembly 3 has a more neat appearance, the two U-shaped steel plates 303 have the same size. When there is one viscoelastic material 1 304 between two adjacent parallel sides of the two U-shaped steel plates 303, the width of the viscoelastic material 1 304 is the same as the width of the U-shaped steel plate 303, and the length of the viscoelastic material 1 304 is the same as the length of the short side of the U-shaped steel plate 303; when there are multiple viscoelastic materials 1 304 between two adjacent parallel sides of the two U-shaped steel plates 303, the multiple viscoelastic materials 1 304 should be arranged so that the viscoelastic materials 1 304 do not exceed the edge of the U-shaped steel plate 303.

[0075] In order to prevent the two U-shaped steel plates 303 from being easily pulled out after being interlaced and buckled and thus deforming too much, a stopper 307 extending toward the long side of another U-shaped steel plate 303 is provided on the short side of the U-shaped steel plate 303, and a stopper 307 extending toward the short side of the U-shaped steel plate 303 is provided on the long side of another U-shaped steel plate 303. Through the cooperation of the two stoppers 307, the two U-shaped steel plates 303 cannot be pulled out from the buckling direction. It should be noted that the buckling direction here is not the mutual insertion direction when the energy dissipation and reset assembly 3 is assembled, but the direction in which the short side of the U-shaped steel plate 303 is inserted into the opening of the other U-shaped steel plate 303.

[0076] Since the limit block 307 on the short side of one U-shaped steel plate 303 needs to be engaged with the limit block 307 on the long side of another U-shaped steel plate 303, the limit block 307 on the long side of the other U-shaped steel plate 303 needs to be engaged with the limit block 307 on the short side of the U-shaped steel plate 303, that is, the actual short side of the U-shaped steel plate 303 and the long side of the U-shaped steel plate 303 both have limit blocks 307, and the limit blocks 307 on the short side of the U-shaped steel plate 303 and the long side of the U-shaped steel plate 303 extend in the same direction.

[0077] In the present invention, the limit blocks 307 on the two U-shaped steel plates 303 are engaged with each other, thereby limiting the relative displacement of the two U-shaped steel plates 303, so that when the impact force is too large, the energy dissipation reset assembly 3 can be ensured not to be separated.

[0078] In order to increase the energy dissipation and self-resetting capabilities of the energy dissipation and reset assembly 3, a plurality of groups of springs 306 are connected between the buckling end face of one of the U-shaped steel plates 303 and the inner wall of another U-shaped steel plate 303; a plurality of bolts 1 are also passed through the buckling end of the U-shaped steel plate 303, one end of the bolt 1 is fixed to the other U-shaped steel plate 303, the other end of the bolt 1 is tightened with a nut, and a disc spring 1 305 is also sleeved on the bolt 1, which is tightly pressed between the buckling end of the U-shaped steel plate 303 and the other U-shaped steel plate 303, and between the buckling end of the U-shaped steel plate 303 and the nut.

[0079] When the spring 306 is installed, one end of the spring 306 is connected to the short side end face of the U-shaped steel plate 303, and the other end of the spring 306 is connected to the middle section of another U-shaped steel plate 303, and the spring 306 is in a horizontal state. The spring 306 here is in multiple groups, and the multiple groups of springs 306 are arranged at intervals along the width direction of the U-shaped steel plate 303. When shear force occurs in the structure due to external impact, the two U-shaped steel plates 303 are displaced, the spring 306 is compressed, and the auxiliary viscoelastic material 304 consumes the shear force and provides restoring force, so that the auxiliary viscoelastic material achieves a self-reset effect.

[0080] The bolt 1 penetrates the short side of the U-shaped steel plate 303 along the thickness direction of the U-shaped steel plate 303, extends in the vertical direction, and can reciprocate on the short side of the U-shaped steel plate 303. One end of the bolt 1 is fixed to the long side of the other U-shaped steel plate 303, and the nut is tightened on the end of the bolt that is not fixed. At the same time, after the bolt 1 penetrates the short side of the U-shaped steel plate 303, disc springs 1 305 are provided at both ends.

[0081] In addition, there may be multiple groups of disc springs 305 installed by bolt 1, and the multiple groups of disc springs 305 are arranged at intervals along the width direction of the U-shaped steel plate 303. Of course, the number of groups of disc springs 305 arranged at intervals along the width direction of the U-shaped steel plate 303 and the number of groups of springs 306 arranged at intervals along the width direction of the U-shaped steel plate 303 may be equal or unequal.

[0082] During the installation process, in order to avoid the bolt 1 from colliding with the spring 306 when it moves up and down on the U-shaped steel plate 303, the position of the bolt 1 can be selected during the design so that the bolt 1 corresponds to the gap between two adjacent springs 306.

[0083] In the present invention, by providing a disc spring 305, when the structure of the present invention is subjected to an impact and a bending moment occurs, due to the characteristics of the viscoelastic material 304, a relative rotation will occur between the two U-shaped steel plates 303. At this time, the disc spring 305 is compressed, and the disc spring 305 can store a certain amount of energy to assist the viscoelastic material 304 in consuming energy. When the external force disappears, the energy stored in the disc spring 305 can achieve self-reset.

[0084] The U-shaped steel plate 303 also has a sleeve 301, the shape of the sleeve 301 is adapted to the shape of the column, the end of the column is inserted and fixed in the sleeve 301, and corresponding bolt holes are provided on the channel steel 102 in the column and the sleeve 301, so that the plug-in end of the column and the sleeve 301 can be fixed by high-strength bolts, thereby forming a stable connection between the pier body 101 and the energy dissipation and reset assembly 3; at the same time, stiffening ribs 302 are arranged around the sleeve 301 and between the U-shaped steel plate 303, and the stiffening ribs 302 are right-angled triangles, one right-angled side of the stiffening rib 302 is fixed to the sleeve 301, and the other right-angled side of the stiffening rib 302 is fixed to the U-shaped steel plate 303.

[0085] like Figure 6 As shown, the bottom energy dissipation connector 4 includes a bottom plate I 401 and a bottom plate II 402 which are parallel to each other, and at least one viscoelastic material II 405 and a plurality of disc springs II 406 are installed between the bottom plate I 401 and the bottom plate II 402. When there is one viscoelastic material II 405 between the bottom plate I 401 and the bottom plate II 402, the viscoelastic material II 405 is located at the center between the bottom plate I 401 and the bottom plate II 402; when there are multiple viscoelastic materials II 405 between the bottom plate I 401 and the bottom plate II 402, the multiple viscoelastic materials II 405 are evenly arranged between the bottom plate I 401 and the bottom plate II 402; at the same time, the plurality of disc springs II 406 are respectively located on opposite sides or around the viscoelastic material II 405.

[0086] The bottom plate I 401 and the bottom plate II 402 in the bottom energy dissipation connector 4 are both rectangular steel plates. To facilitate the connection between the bottom energy dissipation connector 4 and the lower structure, bolt holes distributed in a rectangular shape are provided on the bottom plate II 402 .

[0087] In order to facilitate the installation of disc spring 2 406, a bolt 2 extending vertically upward is fixed on the base plate Ⅱ402, and the upper end of the bolt 2 passes through the base plate Ⅰ401, and the bolt 2 can move up and down relative to the base plate Ⅰ401, and the disc spring 2 406 is mounted on the bolt 2; of course, in order to prevent the bolt 2 from directly detaching from the base plate Ⅰ401 during the process of moving up and down relative to the base plate Ⅰ401, the upper end of the bolt 2 is tightened with a nut after passing through the base plate Ⅰ401.

[0088] In the present invention, the functions of the viscoelastic material 2 405 and the disc spring 2 406 are similar to those of the viscoelastic material 1 304 and the disc spring 1 305 in the energy dissipation and reset component 3, both of which are energy-saving and self-resetting. In addition, they also have a seismic isolation effect, which can minimize the vibration transmitted from the ground.

[0089] The base plate I 401 also has a sleeve II 403, and the end of the column is inserted and fixed in the sleeve II 403, and the plug-in end of the column is fixed to the sleeve I 301 by high-strength bolts; at the same time, stiffening ribs II 404 are arranged around the sleeve II 403 and between it and the base plate I 401, and the stiffening ribs II 404 are right-angled triangles, one right-angled side of the stiffening ribs II 404 is fixed to the sleeve I 301, and the other right-angled side of the stiffening ribs II 404 is fixed to the base plate I 401.

[0090] like Figure 3 As shown, a top connector 2 is also installed on the top of the pier body 1, and the top connector 2 includes a sleeve three 202 sleeved on the end of the column, a top plate 201 is installed on the upper end of the sleeve three 202, and stiffening ribs three 203 are installed around the top plate 201 and the sleeve three 202.

[0091] The top connecting piece 2 is integrally formed in the factory, and a plurality of bolt holes are reserved on the top plate 201 for connection with the upper structure. Bolt holes are reserved on the side of the sleeve three 202, and threaded holes corresponding to the threaded holes on the sleeve three 202 are also reserved on the channel steel 102 in the column. When the sleeve three 202 is sleeved on the column and the threaded holes on the sleeve three 202 correspond to the threaded holes on the channel steel 102 in the column, high-strength bolts are used to fix the sleeve three 202 to the channel steel 102 in the column.

[0092] When installing the self-resetting anti-impact layered assembly lattice pier provided by the present invention, the extension direction of the web in the U-shaped steel plate 303 should be perpendicular to the direction of the rolling stone, so as to achieve the best energy dissipation and impact resistance effect; similarly, the long side of the bottom energy dissipation connector 4 should be perpendicular to the direction of the rolling stone.

[0093] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine the different embodiments / methods or examples described in this specification and the features of the different embodiments / methods or examples, unless they are contradictory.

[0094] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0095] It should be understood by those skilled in the art that the above embodiments are only for the purpose of clearly illustrating the present invention, and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present invention.

Claims

1. A self-resetting anti-impact layered assembly lattice bridge pier, characterized in that: The invention comprises a pier body (1), an energy dissipation and resetting assembly (3) and a bottom energy dissipation connecting piece (4); the pier body (1) comprises a plurality of pier shafts (101) arranged in sequence from top to bottom; the energy dissipation and resetting assembly (3) is installed between two pier shafts (101); and the bottom energy dissipation connecting piece (4) is installed at the lower end of the pier body (1).

2. The self-resetting anti-impact layered assembly lattice bridge pier according to claim 1 is characterized in that: The pier body (1) comprises four columns in a rectangular array, and two adjacent columns are connected with cross-arranged oblique web members (105) and horizontally connected horizontal web members (104); the energy dissipation and reset assembly (3) is installed between the columns located on the same straight line in two adjacent pier bodies (1).

3. The self-resetting anti-impact layered assembly lattice bridge pier according to claim 2 is characterized in that: The column comprises two oppositely arranged channel steels (102), a plurality of gusset plates (103) are connected between the wing plates on the same side of the two channel steels (102), and the plurality of gusset plates (103) are evenly spaced and arranged along the axis direction of the channel steels (102).

4. The self-resetting anti-impact layered assembly lattice bridge pier according to claim 2 is characterized in that: There are two horizontal web members (104) between two adjacent columns, the two horizontal web members (104) are located on both sides of the crossed oblique web members (105), and the two horizontal web members (104) and the two crossed oblique web members (105) together form two opposite triangular structures.

5. The self-resetting anti-impact layered assembly lattice bridge pier according to claim 4 is characterized in that: The horizontal web members (104) between two adjacent columns are oriented in opposite directions; preferably, a node plate (106) for connecting the oblique web members (105) and the horizontal web members (104) is also installed on the column.

6. The self-resetting anti-impact layered assembly lattice bridge pier according to claim 1 is characterized in that: The energy dissipation and resetting assembly (3) comprises U-shaped steel plates (303) respectively fixed to two upright posts, the two U-shaped steel plates (303) are interlaced and buckled, and both ends of the U-shaped steel plates (303) are provided with mutually buckled limit blocks (307); at least one viscoelastic material (304) is installed between the buckled ends of the two U-shaped steel plates (303) and between the buckled end of one U-shaped steel plate (303) and the inner wall of the other U-shaped steel plate (303).

7. The self-resetting anti-impact layered assembly lattice bridge pier according to claim 6 is characterized in that: A plurality of groups of springs (306) are connected between the buckling end surface of one of the U-shaped steel plates (303) and the inner wall of another U-shaped steel plate (303); a plurality of bolts are also passed through the buckling end of the U-shaped steel plate (303); one end of the bolt is fixed to the other U-shaped steel plate (303); a nut is tightened on the other end of the bolt; and a disc spring (305) is sleeved on the bolt and pressed between the buckling end of the U-shaped steel plate (303) and the other U-shaped steel plate (303), and between the buckling end of the U-shaped steel plate (303) and the nut; preferably, the U-shaped steel plate (303) also has a sleeve (301), the end of the column is inserted and fixed in the sleeve (301), and a stiffening rib (302) is arranged around the sleeve (301) and between the U-shaped steel plate (303).

8. The self-resetting anti-impact layered assembly lattice bridge pier according to claim 1 is characterized in that: The bottom energy dissipation connecting member (4) comprises a bottom plate I (401) and a bottom plate II (402) which are parallel to each other, and at least one viscoelastic material II (405) and a plurality of disc springs II (406) are installed between the bottom plate I (401) and the bottom plate II (402).

9. The self-resetting anti-impact layered assembly lattice bridge pier according to claim 8 is characterized in that: The base plate II (402) is also provided with bolt II that passes through the base plate I (401) and extends upward, and disc spring II (406) is sleeved on bolt II; preferably, the base plate I (401) is also provided with sleeve II (403), the end of the column is inserted and fixed in sleeve II (403), and stiffening rib II (404) is provided around sleeve II (403) and between the base plate I (401).

10. The self-resetting anti-impact layered assembly lattice bridge pier according to any one of claims 1 to 9, characterized in that: A top connector (2) is also installed on the top of the pier body (1), and the top connector (2) comprises a sleeve three (202) sleeved on the end of the column, a top plate (201) is installed on the upper end of the sleeve three (202), and stiffening ribs three (203) are installed around the top plate (201) and the sleeve three (202).

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