Longitudinal seismic system for continuous beams, seismic device and installation method

Abstract

The application relates to a longitudinal anti-seismic system of a continuous beam, an anti-seismic device and a mounting method, which comprises a pier column, a support fixed at the top end of the pier column, a main beam installed on the support, a longitudinal anti-seismic block structure fixed at the bottom of the main beam, the support and the longitudinal anti-seismic block structure being arranged at intervals along the longitudinal bridge direction, and a longitudinal adjusting member clamped between the support and the longitudinal anti-seismic block structure, so that the longitudinal adjusting member exerts a longitudinal pre-tightening force on the longitudinal anti-seismic block structure and the support, or the longitudinal adjusting member is clamped between the pier column and the longitudinal anti-seismic block structure, so that the longitudinal adjusting member exerts a longitudinal pre-tightening force on the longitudinal anti-seismic block structure and the pier column. By exerting the longitudinal pre-tightening force on the longitudinal anti-seismic block structure and the support or the pier column through the longitudinal adjusting member, the fixed anti-seismic block structure and the longitudinal adjusting member play the role of longitudinally fixing the support under the action of static force, and the fixed anti-seismic block structure actively participates in resisting the horizontal force in the bridge direction in advance, so that the anti-seismic effect is better.

Description

Technical Field

[0001] This application relates to the field of bridge technology, specifically to a longitudinal seismic resistance system, seismic resistance device, and installation method for a continuous beam. Background Technology

[0002] Qinghai-Tibet and Sichuan are earthquake-prone areas in my country, making bridge seismic resistance a particularly prominent issue. Seismic design is often a key consideration in the entire bridge design process, and the longitudinal seismic resistance of multi-span long continuous beams is especially critical.

[0003] Typically, multi-span continuous beams employ longitudinal seismic blocks on one or more piers to resist longitudinal seismic forces. Common longitudinal seismic blocks often employ a passive load-bearing method, meaning a gap exists between the block and the support or pier. Under seismic load, relative displacement occurs between the main beam and the support or pier, causing the longitudinal seismic block to come into contact with and interact with the support or pier. However, with multiple longitudinal seismic blocks, it's impossible to guarantee that the gaps between each block and the support or pier are identical during on-site construction and installation. Furthermore, the direction of the horizontal seismic force is often uncertain. This passive load-bearing method leads to uneven stress distribution among the multiple longitudinal seismic blocks. In extreme cases, if one seismic-resistant structure bears a large load, it may fail before reaching the seismic design load, causing the entire main beam seismic-resistant structure to fail. Summary of the Invention

[0004] This application provides a longitudinal seismic resisting system, seismic resisting device, and installation method for a continuous beam, which can solve the technical problem in related technologies where uneven stress occurs among multiple longitudinal seismic resisting blocks. In extreme cases, one of the seismic resisting structures may bear a large load and fail before reaching the seismic design load, thus causing the entire main beam seismic resisting structure to fail.

[0005] In a first aspect, embodiments of this application provide a longitudinal seismic resistance system for a continuous beam, comprising: a pier, the top of which is fixed with a support; a main beam, which is installed on the support, and a longitudinal seismic blocking structure is fixed at the bottom of the main beam, the support and the longitudinal seismic blocking structure being arranged at intervals along the longitudinal direction of the bridge; and a longitudinal adjusting member, which is engaged between the support and the longitudinal seismic blocking structure, thereby applying a longitudinal preload to the longitudinal seismic blocking structure and the support; or the longitudinal adjusting member is engaged between the pier and the longitudinal seismic blocking structure, thereby applying a longitudinal preload to the longitudinal seismic blocking structure and the pier.

[0006] In conjunction with the first aspect, in one embodiment, a plurality of the piers are distributed at intervals along the longitudinal direction of the main beam, and longitudinal seismic blocking structures are symmetrically installed on opposite sides of some of the piers. The longitudinal adjusting member is engaged between the longitudinal seismic blocking structure on each side and the pier or the support.

[0007] In conjunction with the first aspect, in one embodiment, the longitudinal adjustment member includes: a fixed stop block, the fixed stop block being fixed to the side of the pier or the support, and the fixed stop block protruding towards the side close to the longitudinal seismic blocking block structure to form an inclined surface; and a self-locking wedge block structure, the self-locking wedge block structure including a wedge block and an adjustment member connecting the wedge block, the adjustment member being configured to drive the wedge block to engage with the fixed stop block and the longitudinal seismic blocking block structure along the inclined surface.

[0008] In conjunction with the first aspect, in one embodiment, the adjusting member includes a screw; the inclined surface includes a first inclined surface and a second inclined surface, the first inclined surface and the second inclined surface being symmetrically disposed on the fixed stop block; the wedge block includes a first wedge block and a second wedge block, the first wedge block being sandwiched between the first inclined surface and the longitudinal seismic stop block structure, the first wedge block being tightly fitted with the first inclined surface, the second wedge block being sandwiched between the second inclined surface and the longitudinal seismic stop block structure, the second wedge block being tightly fitted with the second inclined surface, the screw passing through the first wedge block and the second wedge block, the cross-sectional dimensions of the first wedge block and the second wedge block gradually increasing along the axis of the screw block in a direction away from each other.

[0009] In conjunction with the first aspect, in one embodiment, the longitudinal adjusting member further includes a support plate, the support plate being fixed to one side of the longitudinal anti-seismic block structure, and the support plate supporting the wedge block.

[0010] In conjunction with the first aspect, in one embodiment, the longitudinal seismic blocking block structure includes two parallel first vertical side plates and a bottom plate sandwiched between the two first vertical side plates. The two first vertical side plates are arranged in the same direction as the main beam, and a portion of the first vertical side plates extends into the main beam. The longitudinal seismic blocking block structure also includes two end plates, which are respectively disposed at both ends of the first vertical side plates. The first vertical side plates and the bottom plate are both connected to the end plates, and the wedge block is in contact with one of the end plates.

[0011] In conjunction with the first aspect, in one embodiment, the longitudinal seismic blocking block structure further includes a second vertical side plate, which is disposed between two first vertical side plates and is parallel to the first vertical side plates. The second vertical side plate is connected to the bottom plate and the end plate respectively, and a portion of the second vertical side plate is also fixed to the main beam.

[0012] Secondly, embodiments of this application provide a longitudinal seismic resisting device for a continuous beam, used for installation between a pier or support and the main beam. The seismic resisting device includes: a longitudinal seismic resisting block structure, which is used for installation on the main beam; and a longitudinal adjusting member, which is disposed along the longitudinal direction of the bridge on one side of the longitudinal seismic resisting block structure. The longitudinal adjusting member is used to engage between the support and the longitudinal seismic resisting block structure, so that the longitudinal adjusting member applies a longitudinal preload to the longitudinal seismic resisting block structure and the support; or it is used to engage between the pier and the longitudinal seismic resisting structure, so that the longitudinal adjusting member applies a longitudinal preload to the longitudinal seismic resisting block structure and the pier.

[0013] Thirdly, embodiments of this application provide an installation method for an anti-seismic device, comprising the following steps: fixing a longitudinal anti-seismic block structure to a main beam; locking a longitudinal adjusting member between a support below the main beam and the longitudinal anti-seismic block structure, so that the longitudinal adjusting member applies a longitudinal preload to the longitudinal anti-seismic block structure and the support; or locking a longitudinal adjusting member between a pier below the main beam and the longitudinal anti-seismic block structure, so that the longitudinal adjusting member applies a longitudinal preload to the longitudinal anti-seismic block structure and the pier.

[0014] In conjunction with the third aspect, in one embodiment, the longitudinal adjusting member includes a first wedge, a second wedge, a screw, and a fixing block. The step of engaging the longitudinal adjusting member between the support below the main beam and the longitudinal seismic blocking block structure, thereby applying a longitudinal preload to the longitudinal seismic blocking block structure and the support, or engaging the longitudinal adjusting member between the pier below the main beam and the longitudinal seismic blocking block structure, thereby applying a longitudinal preload to the longitudinal seismic blocking block structure and the pier, includes: fixing the fixing block to the side of the support or pier; engaging the first and second wedges between the fixing block and the longitudinal seismic blocking block structure; inserting the screw through the first and second wedges; and turning the screw to move the first and second wedges towards each other.

[0015] The beneficial effects of the technical solutions provided in this application include: By connecting the longitudinal seismic abutment structure with the pier or support using longitudinal adjusting components, and by applying longitudinal preload to the longitudinal seismic abutment structure and the support or pier, the longitudinal seismic abutment structure can be pre-locked with the support or pier, which is equivalent to applying active force to the bridge. When an earthquake generates longitudinal horizontal force, all seismic abutment structures can work simultaneously. This solves the technical problem in related technologies where uneven stress occurs among multiple longitudinal seismic abutments. In extreme cases, due to uneven stress among multiple longitudinal seismic abutments, one seismic structure may bear a large load and fail before reaching the earthquake design load, thus causing the entire main beam seismic structure to fail. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the main view of the continuous beam provided in the embodiments of this application; Figure 2 This is a structural schematic diagram of the continuous beam provided in the embodiments of this application from another perspective; Figure 3 This is a schematic diagram of the structure of the longitudinal adjustment member and the support provided in the embodiments of this application; Figure 4 for Figure 3 Sectional view of AA; Figure 5 for Figure 3 Sectional view of BB; Figure 6 This is a partial structural schematic diagram of the longitudinal seismic-resistant block structure provided in the embodiments of this application; Figure 7 This is a schematic diagram showing the connection between the first wedge, the second wedge, and the screw provided in the embodiments of this application; Figure 8 This is a schematic diagram of the structure of the first inclined surface and the second inclined surface in the fixed block provided in the embodiments of this application.

[0018] In the picture: 1. Piers; 2. Support; 3. Main beam; 4. Longitudinal seismic blocking block structure; 41. First vertical side plate; 42. Bottom plate; 43. End plate; 44. Second vertical side plate; 45. Stiffening plate; 5. Longitudinal adjusting component; 51. Fixed stop block; 511. First inclined surface; 512. Second inclined surface; 52. Wedge block; 521. First wedge block; 522. Second wedge block; 53. Adjusting component; 531. Screw; 54. Support plate; 6. Longitudinal movable support. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0020] This application provides a longitudinal seismic resisting system for continuous beams, which can solve the technical problem in related technologies where uneven stress occurs among multiple longitudinal seismic resisting blocks, and in extreme cases, one of the seismic resisting structures bears a large load and fails before reaching the seismic design load, thus causing the entire main beam seismic resisting structure to fail.

[0021] See Figure 1 The diagram illustrates a longitudinal seismic resistance system for a continuous beam according to an embodiment of this application. It may include: a pier 1, with a support 2 fixed to its top; a main beam 3, mounted on the support 2, with a longitudinal seismic blocking block structure 4 fixed to its bottom; the support 2 and the longitudinal seismic blocking block structure 4 being spaced apart along the longitudinal direction of the bridge; and a longitudinal adjusting member 5, which is engaged between the support 2 and the longitudinal seismic blocking block structure 4, allowing the longitudinal adjusting member 5 to adjust the longitudinal seismic blocking block structure 4 and the support 2. The longitudinal preload is applied to the support 2; or the longitudinal adjustment member 5 is engaged between the pier 1 and the longitudinal seismic blocking block structure 4, so that the longitudinal adjustment member 5 applies a longitudinal preload to the longitudinal seismic blocking block structure 4 and the pier 1. That is, when the longitudinal adjustment member 5 is engaged between the longitudinal seismic blocking block structure 4 and the support 2, the support 2 and the longitudinal seismic blocking block structure 4 are arranged at intervals along the longitudinal direction of the bridge. When the longitudinal adjustment member 5 is engaged between the longitudinal seismic blocking block and the pier 1, the pier 1 and the longitudinal seismic blocking block structure 4 are arranged at intervals along the longitudinal direction of the bridge.

[0022] This embodiment connects the longitudinal seismic-resistant block structure 4 to the pier 1 or support 2 using a longitudinal adjusting member 5. The longitudinal adjusting member 5 applies a longitudinal preload to the longitudinal seismic-resistant block structure 4 and the support 2 or pier 1, allowing the fixed seismic-resistant block structure to proactively resist the horizontal force along the bridge direction in advance. In other words, the longitudinal seismic-resistant block structure 4 is pre-locked to the support 2 or pier 1, effectively applying an active force to the bridge. When an earthquake occurs, and the direction of the longitudinal horizontal force is uncertain, all the longitudinal seismic-resistant block structures 4 can work simultaneously. This eliminates the problem of uneven stress distribution among the longitudinal seismic-resistant block structures 4 due to sequential stress distribution, resulting in better seismic resistance. This solves the technical problem in related technologies where uneven stress distribution among multiple longitudinal seismic-resistant blocks can lead to failure of the entire main beam seismic-resistant structure under extreme conditions, where a single seismic-resistant structure bears a large load and fails before reaching the earthquake design load. See also... Figure 1 and Figure 2 As shown, in some optional embodiments, multiple piers 1 are distributed longitudinally along the main beam 3. Longitudinal seismic blocking structures 4 are symmetrically installed on opposite sides of some of the piers 1. A longitudinal adjusting member 5 is engaged between the longitudinal seismic blocking structure 4 on each side and the pier 1 or the support 2. That is, in this embodiment, multiple piers 1 are arranged along the longitudinal direction of the main beam 3, and longitudinal seismic blocking structures 4 are symmetrically installed on opposite sides of some of the piers 1. At this time, a longitudinal adjusting member 5 is also engaged between the pier 1 or the support 2 and the seismic blocking structure. The longitudinal adjusting members 5 on both sides of the pier 1 can have the same preload on the pier 1 or the support 2, so that the longitudinal adjusting members 5 on both sides of the pier 1 can function simultaneously, ensuring that the longitudinal adjusting members 5 at each location are evenly stressed under seismic action. Preferably, a longitudinal movable support can be installed at the pier 1 where the longitudinal seismic blocking structure 4 is not installed.

[0023] In some optional embodiments, the longitudinal adjusting member 5 may include: a fixed stop 51, which is fixed to the side of the pier 1 or the support 2. When the pier 1 or the support 2 is made of steel, the fixed support 2 can be directly welded to it. When the pier 1 or the support 2 is made of reinforced concrete, an embedded part can be provided to connect with the fixed stop 51. The fixed stop 51 protrudes towards the side close to the longitudinal seismic blocking block structure 4 to form an inclined surface; a self-locking wedge block structure, wherein the self-locking... The fixed wedge block structure includes a wedge block 52 and an adjusting member 53 connecting the wedge block 52. The adjusting member 53 is configured to drive the wedge block 52 to engage between the fixed stop block 51 and the longitudinal seismic blocking block structure 4 along the inclined surface. It should be understood that in this embodiment, after the wedge block 52 is engaged between the fixed stop block 51 and the longitudinal seismic blocking block, it fits against the inclined surface of the fixed stop block 51. The fixed stop block 51 is also a wedge structure. The wedge block 52 and the fixed stop block 51 with the wedge structure can be mutually engaged under the action of the adjusting member 53.

[0024] See Figure 7 and Figure 8 As shown, in some optional embodiments, the adjusting member 53 includes a screw 531; the inclined surface includes a first inclined surface 511 and a second inclined surface 512, the first inclined surface 511 and the second inclined surface 512 being symmetrically arranged on the fixed stop block 51; the wedge block 52 includes a first wedge block 521 and a second wedge block 522, the first wedge block 521 being sandwiched between the first inclined surface 511 and the longitudinal seismic blocking block structure 4, the first wedge block 521 being tightly fitted with the first inclined surface 511, the second wedge block 522 being sandwiched between the second inclined surface 512 and the longitudinal seismic blocking block structure 4, the second wedge block 522 being tightly fitted with the second inclined surface 512, the screw 531 passing through the first wedge block 521 and the second wedge block 522, the cross-sectional dimensions of the first wedge block 521 and the second wedge block 522 being along the screw 531. The axis of 1 gradually increases in the direction of mutual distance. In this embodiment, the adjusting member 53 is a screw 531. In some other embodiments, the adjusting member 53 can also be a clamping member to fasten the first wedge 521 and the second wedge 522 by clamping. The first wedge 521 and the second wedge 522 can both be provided with threaded through holes so that the screw 531 can pass through. When the screw 531 is gradually tightened, the first wedge 521 and the second wedge 522 gradually approach each other, so that the first wedge 521 and the second wedge 522 are gradually locked with the fixed stop 51. Preferably, the first wedge 521 and the second wedge 522 can have the same structure. The first wedge 521 and the second wedge 522 with the same structure can generate a squeezing effect between the screw 531 and the fixed stop 51 when the screw 531 is tightened, so that the forces between them can be balanced, thereby generating a preload force in the longitudinal direction.

[0025] In some optional embodiments, the longitudinal adjusting member 5 further includes a support plate 54, which is fixed to one side of the longitudinal seismic blocking block structure 4 and supports the wedge block 52. In this case, the support plate 54 can support the first wedge block 521 and the second wedge block 522. In this embodiment, the first wedge block 521 and the second wedge block 522 can both be placed vertically, that is, along the transverse bridge, the cross-sectional dimensions of the first wedge block 521 and the second wedge block 522 gradually decrease as they get closer to the middle position of the transverse bridge of the main beam 3. Setting the support plate 54 can facilitate the installation of the first wedge block 521 and the second wedge block 522.

[0026] See Figures 3 to 5 As shown, in some optional embodiments, the longitudinal seismic blocking structure 4 includes two parallel first vertical side plates 41 and a bottom plate 42 sandwiched between the two first vertical side plates 41. The two first vertical side plates 41 are arranged in the same direction as the main beam 3. It should be understood that, in this embodiment, "arranged in the same direction" means that the first vertical side plates 41 also extend along the longitudinal direction of the bridge, and a portion of the first vertical side plates 41 extends into the main beam 3. It should be understood that "extending into the main beam 3" here can mean that corresponding stiffening plates are welded to corresponding positions inside the main beam 3 to ensure that the local stress meets the requirements. At this time, the stiffening plates are welded inside the main beam 3, and the first vertical side plates 41 are welded to the bottom of the main beam 3. The stiffening plates and the first vertical side plates 41 can be arranged opposite each other on both sides of the bottom plate of the main beam. Preferably, the support plate 54 is disposed at the bottom end of the longitudinal seismic blocking block structure 4, that is, one side of the support plate 54 is connected to the bottom plate 42; the longitudinal seismic blocking block structure 4 also includes two end-sealing plates 43, which are respectively disposed at both ends of the first vertical side plate 41. The first vertical side plate 41 and the bottom plate 42 are both connected to the end-sealing plates 43, and the wedge block 52 is in contact with one of the end-sealing plates 43. That is, the two first vertical side plates 41 are welded into a whole by the end-sealing plates 43. The end-sealing plate 43 in contact with the wedge block 52 is the end-sealing plate 43 on the side closer to the pier column 1. The end-sealing plate 43 and the wedge block 52 can be tightly fitted or just touching each other. See Figure 6As shown, in some optional embodiments, the longitudinal seismic-resistant block structure 4 further includes a second vertical side plate 44. The second vertical side plate 44 is disposed between two first vertical side plates 41, and the second vertical side plate 44 is parallel to the first vertical side plates 41. The second vertical side plate 44 is connected to the bottom plate 42 and the end plate 43 respectively, and a portion of the second vertical side plate 44 is also fixed to the main beam 3. The first vertical side plates 41 and the first vertical side plates 41 can have the same structure. The second vertical side plate 44 disposed between two first vertical side plates 41 can improve the longitudinal seismic resistance of the longitudinal seismic-resistant block structure 4. In this embodiment, multiple stiffening plates can be disposed inside the main beam. The multiple stiffening plates are respectively disposed opposite to the first vertical side plates 41, the second vertical side plates 44 and the end plate 43 on both sides of the bottom plate of the main beam. Preferably, the longitudinal seismic blocking block structure 4 also includes two stiffening plates 45. Each stiffening plate 45 is respectively disposed between one of the first vertical side plates 41 and the second vertical side plates 44. The stiffening plates 45 can be arranged parallel to the bottom plate 42 in the longitudinal seismic blocking block structure 4 to better transmit shear force. In this embodiment, the end plate 43 near the pier 1 can be regarded as a bearing plate. One end of the stiffening plate 45 can be fixed on the bearing plate. The plate surface of the stiffening plate 45 is perpendicular to the wedge block 52. That is, if the stiffening plate extends along the longitudinal direction of the bridge towards the side near the pier 1, it is perpendicular to the wedge block 52. The length of the stiffening plate 45 along the longitudinal direction of the bridge can be less than the length of the first vertical side plate 41 along the longitudinal direction of the bridge. That is, the other end of the stiffening plate 45 can not contact the end plate 43 on the other side. In this embodiment, the stiffening plate 45 is polished and tightened or directly welded to the bearing plate to transmit axial (i.e., longitudinal bridge) pressure. It is also welded to the first vertical side plate 41 and the second vertical side plate 44 to transmit longitudinal bridge shear force. The transmission path can be that the longitudinal horizontal force transmitted to the longitudinal seismic block structure 4 by the joint action of the wedge block 52 and the fixed stop block 51 first acts on the bearing plate, and the bearing plate then directly transmits part of the longitudinal horizontal force to the first vertical side plate 41 and the second vertical side plate 44, while the other part of the longitudinal horizontal force is transmitted to the stiffening plate 45, and the stiffening plate 45 then transmits it to the first vertical side plate 41 and the second vertical side plate 44, so that the longitudinal horizontal force ultimately acts on the first vertical side plate 41 and the second vertical side plate 44.

[0027] This application embodiment also provides a longitudinal seismic resisting device for a continuous beam, used for installation between the pier 1 or support 2 and the main beam 3. The seismic resisting device may include: a longitudinal seismic resisting block structure 4, which is used for installation on the main beam 3; and a longitudinal adjusting member 5, which is disposed along the longitudinal direction of the bridge on one side of the longitudinal seismic resisting block structure 4. The longitudinal adjusting member 5 is used to engage between the support 2 and the longitudinal seismic resisting block structure 4, so that the longitudinal adjusting member 5 applies a longitudinal preload to the longitudinal seismic resisting block structure 4 and the support 2; or it is used to engage between the pier 1 and the longitudinal seismic resisting block structure 4, so that the longitudinal adjusting member 5 applies a longitudinal preload to the longitudinal seismic resisting block structure 4 and the pier 1. The seismic resisting device may adopt the longitudinal adjusting member 5 and the longitudinal seismic resisting block structure 4 in any of the above embodiments, which will not be described in detail here.

[0028] This application also provides a method for installing a seismic device, which may include the following steps: SI: The longitudinal seismic blocking structure 4 is fixed to the main beam 3. The longitudinal seismic blocking structure 4 may include two first vertical side plates 41, a second vertical side plate 44, a bottom plate 42, two end plates 43, and two stiffening plates 45. The longitudinal seismic blocking structure 4 is fixed to the main beam 3 by welding in the factory according to the relevant welding sequence. It should be noted that all plates of the longitudinal seismic blocking structure 4 connected to the main beam 3 are welded with full penetration welding. Parts of the two first vertical side plates 41 and the second vertical side plates 44 are welded to the bottom plate 42 of the main beam 3 with double-sided beveled penetration welds. Before fixing the longitudinal seismic blocking structure 4 to the main beam 3, a corresponding seismic force finite element model can be established based on the bridge structure layout and design drawings to obtain the longitudinal seismic force of the main beam 3. This is used as the resistance of the device, thereby determining the component dimensions of each structure. In this embodiment, each component may be the longitudinal seismic blocking structure 4, the fixed block 51, and the wedge block 52.

[0029] S2: The longitudinal adjustment component 5 is engaged between the support 2 below the main beam 3 and the longitudinal seismic blocking block structure 4, so that the longitudinal adjustment component 5 applies a longitudinal preload to the longitudinal seismic blocking block structure 4 and the support 2; or the longitudinal adjustment component 5 is engaged between the pier 1 below the main beam 3 and the longitudinal seismic blocking block structure 4, so that the longitudinal adjustment component 5 applies a longitudinal preload to the longitudinal seismic blocking block structure 4 and the pier 1. That is to say, after the longitudinal adjustment component 5 is engaged between the pier 1 and the longitudinal seismic blocking block or between the support 2 and the longitudinal seismic blocking block, the preload of the longitudinal adjustment component 5 can be increased by adjusting the structure in the longitudinal adjustment component 5, so as to adapt to a greater degree of vibration.

[0030] In some optional embodiments, the longitudinal adjustment member 5 includes a first wedge 521, a second wedge 522, a screw 531, and a fixed stop 51. The first inclined surface 511 and the second inclined surface 512 of the first wedge 521, the second wedge 522, and the fixed stop 51 should have completely consistent angles of inclination, and these angles should be within a reasonable range. Furthermore, the inclined surfaces should have a certain degree of smoothness to ensure free sliding. At this point, the friction between the wedge 52 and the fixed stop 51 should be minimized, so that the force transmitted between the wedge 52 and the fixed stop 51 is as perpendicular to the wedge surface as possible. This allows for the release of... The vertical force between the longitudinal seismic blocking block structure 4 at the bottom of the main beam 3 and the support 2 does not interfere with the support 2 bearing the vertical load. Secondly, by tightening the screw 531, the axial force of the screw 531 can be effectively converted into a horizontal force along the bridge direction between the wedge block 52 and the fixed stop 51, so that the wedge block 52 and the fixed stop 51 are clamped together, which is equivalent to applying a preload. This allows the longitudinal seismic blocking block structure 4 to generate a longitudinal interaction force with the pier 1 or the support 2. Furthermore, when there are multiple longitudinal seismic blocking block structures 4, the magnitude of the preload can be changed by adjusting the tightness of the screw 531, so that the multiple longitudinal seismic blocking block structures 4 are subjected to uniform force. The method of securing the longitudinal adjusting member 5 between the support 2 below the main beam 3 and the longitudinal seismic blocking block structure 4, so that the longitudinal adjusting member 5 applies a longitudinal preload to the longitudinal seismic blocking block structure 4 and the support 2; or securing the longitudinal adjusting member 5 between the pier 1 below the main beam 3 and the longitudinal seismic blocking block structure 4, so that the longitudinal adjusting member 5 applies a longitudinal preload to the longitudinal seismic blocking block structure 4 and the pier 1, includes: fixing the fixed block 51 to the side of the support 2 or the pier 1, securing the first wedge 521 and the second wedge 522 between the fixed block 51 and the longitudinal seismic blocking block structure 4, and passing the screw 531 through the first wedge 521 and the second wedge 522. Tightening the screw 531 causes the first wedge 521 and the second wedge 522 to move toward each other. In this embodiment, the main beam 3 is a multi-span continuous beam with multiple piers 1 along its longitudinal direction. Since the longitudinal horizontal force generated by the multi-span continuous beam is large, the support 2 cannot fully bear its force. Therefore, a longitudinal seismic blocking block structure 4 is usually set. By tightening the screw 531 at each position to a certain extent at the location of the longitudinal seismic blocking block structure 4, the preload between the wedge 52 and the fixed block 51 at each position can reach almost the same size, so that the multiple longitudinal seismic blocking blocks are evenly stressed, thereby achieving a better seismic effect and having better economic efficiency.

[0031] The seismic resisting device described in this application is mainly applicable to the longitudinal seismic resisting of the steel main beam 3. When the main beam 3 is a concrete beam or the lower pier column 1 is a concrete structure, the device can also be adjusted accordingly, and has a wide range of applicability.

[0032] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0033] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A longitudinal seismic resisting system for continuous beams, characterized in that, It includes: Pier (1), with a support (2) fixed at the top of the pier (1); The main beam (3) is installed on the support (2). The bottom of the main beam (3) is fixed with a longitudinal seismic blocking block structure (4). The support (2) and the longitudinal seismic blocking block structure (4) are arranged at intervals along the longitudinal direction of the bridge. A longitudinal adjusting member (5) is engaged between the support (2) and the longitudinal seismic blocking block structure (4), so that the longitudinal adjusting member (5) applies a longitudinal preload to the longitudinal seismic blocking block structure (4) and the support (2); or the longitudinal adjusting member (5) is engaged between the pier (1) and the longitudinal seismic blocking block structure (4), so that the longitudinal adjusting member (5) applies a longitudinal preload to the longitudinal seismic blocking block structure (4) and the pier (1); the longitudinal adjusting member (5) includes: a fixed block. (51) The fixed stop (51) is fixed to the side of the pier (1) or the support (2), and the fixed stop (51) protrudes to the side close to the longitudinal seismic block structure (4) to form an inclined surface; self-locking wedge block structure, the self-locking wedge block structure includes a wedge block (52) and an adjusting member (53) connecting the wedge block (52), the adjusting member (53) is configured to drive the wedge block (52) to be inserted into the fixed stop (51) and the longitudinal seismic block structure (4) along the inclined surface.

2. The longitudinal seismic resisting system for continuous beams as described in claim 1, characterized in that: Multiple piers (1) are distributed longitudinally along the main beam (3). The longitudinal seismic blocking structure (4) is symmetrically installed on the opposite sides of some of the piers (1). The longitudinal adjusting component (5) is engaged between the longitudinal seismic blocking structure (4) on each side and the pier (1) or the support (2).

3. The longitudinal seismic resisting system for continuous beams as described in claim 1, characterized in that: The adjusting member (53) includes a screw (531); The inclined surface includes a first inclined surface (511) and a second inclined surface (512), with the first inclined surface (511) and the second inclined surface (512) symmetrically arranged on the fixed stop (51). The wedge block (52) includes a first wedge block (521) and a second wedge block (522). The first wedge block (521) is sandwiched between the first inclined surface (511) and the longitudinal seismic blocking structure (4). The first wedge block (521) is in close contact with the first inclined surface (511). The second wedge block (522) is sandwiched between the second inclined surface (512) and the longitudinal seismic blocking structure (4). The second wedge block (522) is in close contact with the second inclined surface (512). The screw (531) passes through the first wedge block (521) and the second wedge block (522). The cross-sectional dimensions of the first wedge block (521) and the second wedge block (522) gradually increase along the axis of the screw (531) in a direction away from each other.

4. The longitudinal seismic resisting system for continuous beams as described in claim 1, characterized in that: The longitudinal adjustment member (5) also includes a support plate (54), which is fixed to one side of the longitudinal seismic block structure (4) and supports the wedge block (52).

5. The longitudinal seismic resisting system for continuous beams as described in claim 1, characterized in that: The longitudinal seismic blocking block structure (4) includes two parallel first vertical side plates (41) and a bottom plate (42) sandwiched between the two first vertical side plates (41). The two first vertical side plates (41) are arranged in the same direction as the main beam (3), and part of the first vertical side plate (41) extends into the main beam (3). The longitudinal seismic blocking block structure (4) also includes two end plates (43), which are respectively located at both ends of the first vertical side plate (41). The first vertical side plate (41) and the bottom plate (42) are both connected to the end plates (43), and the wedge block (52) is in contact with one of the end plates (43).

6. The longitudinal seismic resisting system for continuous beams as described in claim 5, characterized in that: The longitudinal seismic blocking block structure (4) also includes a second vertical side plate (44), which is located between two first vertical side plates (41) and is parallel to the first vertical side plates (41). The second vertical side plate (44) is connected to the bottom plate (42) and the end plate (43) respectively, and part of the second vertical side plate (44) is also fixed to the main beam (3).

7. A longitudinal seismic resisting device for a continuous beam, used for installation between a pier (1) or support (2) and a main beam (3), characterized in that, The earthquake-resistant device includes: Longitudinal seismic blocking structure (4), the longitudinal seismic blocking structure (4) is used to be installed on the main beam (3); A longitudinal adjusting member (5) is disposed on one side of the longitudinal seismic blocking block structure (4) along the longitudinal direction of the bridge. The longitudinal adjusting member (5) is used to be engaged between the support (2) and the longitudinal seismic blocking block structure (4), so that the longitudinal adjusting member (5) applies a longitudinal preload to the longitudinal seismic blocking block structure (4) and the support (2); or it is used to be engaged between the pier (1) and the longitudinal seismic blocking block structure (4), so that the longitudinal adjusting member (5) applies a longitudinal preload to the longitudinal seismic blocking block structure (4) and the pier (1); the longitudinal The adjusting member (5) includes: a fixed stop (51), which is fixed to the side of the pier (1) or the support (2), and the fixed stop (51) protrudes towards the side close to the longitudinal seismic block structure (4) to form an inclined surface; and a self-locking wedge block structure, which includes a wedge block (52) and an adjusting member (53) connecting the wedge block (52), wherein the adjusting member (53) is configured to drive the wedge block (52) to engage between the fixed stop (51) and the longitudinal seismic block structure (4) along the inclined surface.

8. A method for installing a seismic resisting device, used for installing the longitudinal seismic resisting device for a continuous beam as described in claim 7, characterized in that, It includes the following steps: The longitudinal seismic blocking block structure (4) is fixed to the main beam (3); The longitudinal adjustment component (5) is positioned between the support (2) below the main beam (3) and the longitudinal seismic blocking block structure (4), so that the longitudinal adjustment component (5) applies longitudinal preload to the longitudinal seismic blocking block structure (4) and the support (2); or the longitudinal adjustment component (5) is positioned between the pier (1) below the main beam (3) and the longitudinal seismic blocking block structure (4), so that the longitudinal adjustment component (5) applies longitudinal preload to the longitudinal seismic blocking block structure (4) and the pier (1).

9. The installation method as described in claim 8, characterized in that, The longitudinal adjusting member (5) includes a first wedge (521), a second wedge (522), a screw (531), and a fixing block (51). The step of clamping the longitudinal adjusting member (5) between the support (2) below the main beam (3) and the longitudinal seismic blocking block structure (4) so ​​that the longitudinal adjusting member (5) applies longitudinal preload to the longitudinal seismic blocking block structure (4) and the support (2); or clamping the longitudinal adjusting member (5) between the pier (1) below the main beam (3) and the longitudinal seismic blocking block structure (4) so ​​that the longitudinal adjusting member (5) applies longitudinal preload to the longitudinal seismic blocking block structure (4) and the pier (1), includes: Fix the fixed block (51) to the side of the support (2) or the pier (1), and place the first wedge (521) and the second wedge (522) between the fixed block (51) and the longitudinal seismic block structure (4). Insert the screw (531) through the first wedge (521) and the second wedge (522), and screw the screw (531) to make the first wedge (521) and the second wedge (522) move toward each other.

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