Multifunctional vertical coupling beam device based on chain type belt energy dissipation component

Abstract

The invention relates to the technical field of bridge seismic resistance, in particular to a multifunctional vertical coupling beam device based on a chain type belt energy dissipation component, which comprises an energy dissipation component, a chain type structure, a pier connecting assembly, a beam connecting assembly and an embedded assembly, the chain structures are arranged at the two ends of the energy dissipation component, the pier connecting assembly is arranged on one side of a pier in the longitudinal bridge direction and connected with the chain structures, and the beam connecting assembly is arranged on one side of a beam in the longitudinal bridge direction and connected with the chain structures. The pre-embedded assembly is connected with the pier connecting assembly and the beam connecting assembly. Multi-directional limiting of the main beam can be effectively achieved, the stability and safety of the overall structure of a bridge are improved, and hazards caused by earthquakes, floods and other disasters and damage caused by overweight, support displacement and the like under the normal use condition are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of bridge earthquake resistance, and in particular to a multifunctional vertical connecting beam device based on a chain-type belt energy-absorbing component. Background Art

[0002] The construction of highway and railway bridges has greatly enhanced the convenience of transportation. However, disasters such as earthquakes, floods, and mudslides can cause serious damage to bridges.

[0003] In particular, the existing beam coupling devices have failed to achieve effective control of bridge damage caused by bearing debonding. Normally, strong earthquakes will cause bearing debonding. During the use stage, if there is a serious overload condition, it will also cause bearing debonding. Small-span bridges with a large live load ratio are particularly susceptible to this effect. When a bearing is debonded, the support points of the beam body will be reduced from the original four to three or two. On the one hand, this will greatly increase the load on the remaining bearings, and on the other hand, it will cause stress concentration in the beam body, which will cause local cracks and damage. The use of reasonable limit devices can achieve coordination between the internal force response and displacement response of the bridge structure, avoid excessive relative displacement between the upper and lower adjacent structures of the bridge, and especially for the movable bearings of the beam bridge, measures should be taken to limit its vertical displacement.

[0004] However, traditional beam coupling devices often perform poorly when disasters occur. There are three main types of traditional beam coupling devices currently used in bridges: plate type, rod type, and cable type. Plate type and rod type beam coupling devices mainly provide rigid limit, but have problems of insufficient durability and poor torsional performance, and the limit direction is relatively single, and the allowed horizontal displacement is small. As for the cable type limit device, although it uses flexible cable materials, it is easy to rust and has high maintenance costs. In addition, the construction is relatively complicated and difficult to replace. Summary of the invention

[0005] The purpose of the present invention is to provide a multifunctional vertical connecting beam device based on a chain belt energy-absorbing component in view of the problem that the connecting beam device in the prior art cannot achieve multi-directional tensile resistance and has a single function.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0007] A multifunctional vertical connecting beam device based on a chain-type energy-absorbing component comprises an energy-absorbing component, a chain structure, a pier connection component, a beam connection component and an embedded component; the chain structure is arranged at both ends of the energy-absorbing component, the pier connection component is arranged on one side of the longitudinal bridge of the pier and connected to the chain structure, the beam connection component is arranged on one side of the longitudinal bridge of the beam and connected to the chain structure, and the embedded component is respectively connected to the pier connection component and the beam connection component.

[0008] Furthermore, the energy-absorbing component includes a pull rod and an end plate, wherein the end plate is arranged at both ends of the pull rod; the end plate is provided with a fixing hole for fixing the pull rod; and the end plate is also provided with a mounting hole for connecting the chain structure.

[0009] Furthermore, the pull rod is made of FRP tendons or FRP strands.

[0010] Furthermore, the chain structure includes at least one track ring, and adjacent track rings are socketed with each other.

[0011] Furthermore, the runway ring includes a pair of C-rings arranged opposite to each other and a connecting rod for connecting the C-rings, and connecting holes are arranged on the C-rings and the connecting rod.

[0012] Furthermore, the pier connection assembly includes a stopper, a first connecting ring, a fixing nut, an adjusting bolt, a first fixing block and a first anchoring steel plate, the adjusting bolt passes through a reserved hole in the first fixing block, the fixing nuts are respectively arranged at both ends of the first fixing block, the stopper is arranged on a side of the adjusting bolt close to the energy-absorbing component, one end of the first connecting ring is connected to the stopper, and the other end is connected to the chain structure, and the first anchoring steel plate is fixedly connected to the first fixing block.

[0013] Furthermore, the embedded component includes an embedded steel plate and embedded steel rods, and a plurality of embedded steel rods are evenly arranged on one side of the embedded steel plate.

[0014] Furthermore, the first anchoring steel plate passes through the embedded steel plate through a first anchoring bolt.

[0015] Furthermore, the connecting assembly at the beam includes a second connecting ring, a second fixed block and a second anchoring steel plate, one end of the second connecting ring is connected to the second fixed block, and the other end is connected to the chain structure, and the second anchoring steel plate is fixedly connected to the second fixed block.

[0016] Furthermore, the second anchoring steel plate passes through the embedded steel plate through a second anchoring bolt.

[0017] In summary, due to the adoption of the above scheme, compared with the prior art, the present invention has the following advantages and technical effects:

[0018] 1. The multifunctional vertical connecting beam device based on the chain-type energy-absorbing component described in the present invention is used to connect the pier body and the beam body. When responding to external forces from different directions of disasters such as earthquakes and strong winds, the device is pulled to limit the relative displacement of beams and piers in different directions, thereby improving the stability and safety of the overall bridge structure and reducing the losses caused by disasters.

[0019] 2. The chain-like connection between rings ensures that when the device restricts the displacement of the bridge and deforms under the action of a disaster, the energy-absorbing component can always remain in a state of tension along the component direction, thereby maximizing the performance of the energy-absorbing component.

[0020] 3. The multifunctional vertical connecting beam device based on the chain-type energy-absorbing component of the present invention has high damping characteristics using materials such as SMA used in the energy-absorbing component, so that the device has good energy-absorbing characteristics and self-resetting characteristics.

[0021] 4. The chain structure is highly flexible and applicable. The design of the detachable fasteners can be replaced in time when the functional components are damaged. The maintenance efficiency of the device is higher and it can be used for various types of bridges. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a plan view of a pull-rod type energy-absorbing component composed of two pull rods according to an embodiment of the present invention;

[0024] Figure 2 It is a schematic plan view of the installation of a pull-rod type energy-absorbing component device according to an embodiment of the present invention;

[0025] Figure 3 for Figure 2 Left view of

[0026] Figure 4 It is a schematic plan view of the ring-shaped fastener structure of the chain-type structure runway according to an embodiment of the present invention;

[0027] Figure 5 It is a schematic plan view of a position adjustment system composed of a lower end connection assembly according to an embodiment of the present invention;

[0028] Figure 6 It is a schematic plan view of a parallel energy-absorbing component composed of a pull rod and a chain structure connected in parallel according to an embodiment of the present invention;

[0029] Figure 7 It is a schematic plan view of the installation of a parallel energy-consuming component device according to an embodiment of the present invention;

[0030] Figure 8 It is a plan view of a damper type energy dissipation component according to an embodiment of the present invention;

[0031] Fig. 9It is a schematic diagram of the installation plan of the damper type energy dissipation component device according to an embodiment of the present invention;

[0032] Fig.10 Taking the device of the pull rod type energy dissipation component as an example in the embodiment of the present invention, the installation schematic diagram of the device when connecting the bridge and the pier;

[0033] Fig.11 It is a deformation schematic diagram and a force diagram of the device when the bridge according to the embodiment of the present invention undergoes longitudinal displacement;

[0034] Fig.12 It is a deformation schematic diagram and a force diagram of the device when the bridge according to the embodiment of the present invention undergoes transverse displacement.

[0035] Description of reference numerals:

[0036] 1: energy-absorbing component; 11: tie rod; 12: end plate; 13: small chain structure; 2: chain structure; 21: C-ring; 22: connecting rod; 23: connecting hole; 3: connecting assembly at pier; 31: first connecting ring; 32: stopper; 33: adjusting bolt; 34: first fixing block; 35: fixing nut; 36: first anchoring steel plate; 37: first anchoring bolt; 4: connecting assembly at beam; 41: second connecting ring; 42: second fixing block; 43: second anchoring steel plate; 5: embedded assembly; 51: embedded steel plate; 52: embedded steel rod; 61: beam body; 62: pier body. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0039] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Example 1

[0041] refer to Figures 1 to 11 The present invention provides a multifunctional vertical beam connecting device based on a chain-type belt energy-absorbing component, comprising an energy-absorbing component 1 for tension resistance, a chain structure 2, a pier connection component 3, a beam connection component 4, and embedded components 5 respectively arranged at the beam and the pier. The chain structure 2 is arranged at both ends of the energy-absorbing component 1, the pier connection component 3 is arranged on one side of the longitudinal bridge of the pier and connected to the chain structure 2, the beam connection component 4 is arranged on one side of the longitudinal bridge of the beam and connected to the chain structure 2, and the embedded components 5 are respectively connected to the pier connection component 3 and the beam connection component 4.

[0042] Specifically, Figure 1 As shown, the energy-absorbing component 1 includes a tie rod 11 and an end plate 12, and the end plate 12 is arranged at both ends of the tie rod 11. A fixing hole is arranged on the end plate 12 for fixing the tie rod 11. A mounting hole is also arranged on the end plate 12 for connecting the chain structure 2. The tie rod 11 is made of two SMAs or other flexible materials with high tensile strength such as high-strength spring steel, copper alloy, aluminum alloy, etc. Preferably, the tie rod 11 is made of FRP tendons or FRP strands. The tie rod 11 passes through the mounting holes on the end plates 12 at the upper and lower ends respectively, and the diameters at the two ends of the tie rod 11 are larger than the diameter in the middle. The tie rod 11 is fixed by blocking the two ends of the tie rod 11 by the end plates 12 at the upper and lower ends. At the same time, a mounting hole is also reserved on the top of the end plate 12, and the mounting hole of the upper end plate 12 is connected to the lower end ring of the upper chain structure 2, and the mounting hole of the lower end plate 12 is connected to the upper end ring of the lower chain structure 2.

[0043] Furthermore, the chain structure 2 includes at least one runway ring, and adjacent runway rings are connected to each other. The runway ring includes a pair of C-rings 21 arranged opposite to each other and a connecting rod 22 for connecting the C-rings 21, and both the C-rings 21 and the connecting rod 22 are provided with connecting holes 23. The runway ring is formed by anchoring the C-ring 21 and the connecting rod 22 with an anchor rod through the connecting hole 23. There are grooves at both ends of the C-ring 21 to facilitate the docking and anchoring installation of the connecting rod 22. The runway ring is any one or n rings in the chain structure 2, which facilitates the chain structure 2 to be buckled on the connecting assembly 3 at the pier and the connecting assembly 4 at the beam.

[0044] The pier connection assembly 3 includes a stopper 32, a first connection ring 31, a fixing nut 35, an adjusting bolt 33, a first fixing block 34 and a first anchoring steel plate 36. The adjusting bolt 33 passes through a reserved hole in the first fixing block 34. The fixing nuts 35 are respectively arranged at both ends of the first fixing block 34. The stopper 32 is arranged on the side of the adjusting bolt 33 close to the energy-absorbing component 1. One end of the first connection ring 31 is connected to the stopper 32, and the other end is connected to the chain structure 2. The first anchoring steel plate 36 is fixedly connected to the first fixing block 34. The diameter of the reserved hole in the first fixing block 34 is larger than that of the adjusting bolt 33, which is used to facilitate the adjustment bolt 33 to pass through the first fixing block 34 and avoid the inconvenience of installation or adjustment and damage to the device caused by thermal expansion and contraction. The adjusting bolt 33 passes through the first fixing block 34 and is fixed in a reasonable position by two upper and lower fixing nuts 35. The pier connection assembly 3 is a position adjustment system, which is used to adjust the connection position of the pier. The harm of thermal expansion and contraction can be avoided by adjusting the position. The side edge of the first fixing block 34 in the pier connection assembly 3 is fixedly connected to the first anchoring steel plate 36 , which can be achieved by welding or designing as an integral component.

[0045] The beam connection assembly 4 includes a second connection ring 41, a second fixing block 42 and a second anchoring steel plate 43. One end of the second connection ring 41 is connected to the second fixing block 42, and the other end is connected to the chain structure 2. The second anchoring steel plate 43 is fixedly connected to the second fixing block 42, which can be achieved by welding or designing as an integral component. The second anchoring steel plate 43 passes through the embedded steel plate 51 through the second anchoring bolt 44.

[0046] Furthermore, the embedded component 5 includes an embedded steel plate 51 and an embedded steel rod 52, and a plurality of embedded steel rods 52 are evenly arranged on one side of the embedded steel plate 51. The first anchoring steel plate 36 passes through the embedded steel plate 51 through the first anchoring bolt 37. The embedded steel rod 52 is used to be embedded in the beam body 61 or the pier body 62 structure and fixed to the reinforced concrete structure, so that the embedded steel plate 51 is more firmly arranged and more conducive to the device to transmit the starting load or braking load. The second anchoring steel plate 43 is provided with a mounting hole, and the second anchoring steel plate 43 and the first anchoring steel plate 36 are fixed to the embedded steel plate 51 with the second anchoring bolt 44 and the first anchoring bolt 37, and the second anchoring bolt 44 and the first anchoring bolt 37 can be threadedly connected with the embedded steel rod 52 through the embedded steel plate 51.

[0047] In order to facilitate the installation and replacement of the device, a bolt connection method is adopted to fix the embedded component 5 and the connecting beam device. If necessary, welding reinforcement can also be performed at the corresponding connection parts.

[0048] Specifically, the multifunctional vertical connecting beam device based on the chain belt energy-absorbing component described in this example should be arranged symmetrically on both sides along the longitudinal bridge to better play its role. The device should be installed on the lower side of the beam body 61 and the lower side of the pier body 62 to facilitate installation, maintenance and replacement of accessories.

[0049] Example 2

[0050] Based on Example 1, the energy absorbing component 1 can be set as a pull-rod type energy absorbing component based on speed, or as a parallel type energy absorbing component based on the combination of speed and displacement ( Figure 6 ), the parallel energy-absorbing component is composed of two SMA or other flexible materials with high tensile strength such as high-strength spring steel, copper alloy, aluminum alloy, etc., and a small chain structure 13 connected in parallel through upper and lower end plates 14. The upper and lower end plates 14 are both provided with two left and right mounting holes for mounting and fixing the SMA rod 11, and two upper and lower connecting holes for connecting the chain structure 2 and the small chain structure 13. When the rod is installed, prestress can be applied to keep it in a tension state at all times. With the tension of the chain structure, it can not only achieve the limit but also achieve a strong self-reset function. After the energy-absorbing component 1 fails, the device can still maintain its function, which is suitable for bridges in higher intensity disaster-prone areas.

[0051] Example 3

[0052] Based on Example 1, the energy absorbing component 1 can be set as a pull-rod type energy absorbing component based on speed or a pull-rod type energy absorbing component based on displacement. In the case of unchanged form ( Figure 1 ), the energy dissipation pull rod 11 is replaced by high-strength tensile materials such as FRP tendons and FRP strands.

[0053] Example 4

[0054] Based on Example 1, the energy dissipation structure is a speed-based energy dissipation component, which can be set as a viscous damper ( Figure 8 ), the two ends are connected by upper and lower chain structures 2 to the beam connection component 4 and the pier connection component 3, such as Fig. 9 As shown, the energy dissipation function is achieved by the viscous damper.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multifunctional vertical connecting beam device based on a chain-type belt energy-absorbing component, characterized in that: The invention comprises an energy-absorbing component (1), a chain structure (2), a pier connection component (3), a beam connection component (4) and an embedded component (5); the chain structure (2) is arranged at both ends of the energy-absorbing component (1); the pier connection component (3) is arranged on one side of the longitudinal bridge of the pier and connected to the chain structure (2); the beam connection component (4) is arranged on one side of the longitudinal bridge of the beam and connected to the chain structure (2); and the embedded component (5) is respectively connected to the pier connection component (3) and the beam connection component (4).

2. The multifunctional vertical connecting beam device based on the chain belt energy-absorbing component according to claim 1 is characterized in that: The energy-absorbing component (1) comprises a pull rod (11) and an end plate (12), wherein the end plate (12) is arranged at both ends of the pull rod (11); the end plate (12) is provided with a fixing hole for fixing the pull rod (11); the end plate (12) is also provided with a mounting hole for connecting the chain structure (2).

3. The multifunctional vertical connecting beam device based on the chain belt energy-absorbing component according to claim 2 is characterized in that: The pull rod (11) is made of FRP tendons or FRP strands.

4. The multifunctional vertical connecting beam device based on the chain belt energy absorbing component according to claim 1 is characterized in that: The chain structure (2) comprises at least one track ring, and adjacent track rings are sleeved with each other.

5. The multifunctional vertical connecting beam device based on the chain belt energy absorbing component according to claim 4 is characterized in that: The runway ring comprises a pair of C-rings (21) arranged opposite to each other and a connecting rod (22) used to connect the C-rings (21). Both the C-rings (21) and the connecting rod (22) are provided with connecting holes (23).

6. The multifunctional vertical connecting beam device based on the chain belt energy absorbing component according to claim 1 is characterized in that: The pier connection assembly (3) comprises a stopper (32), a first connecting ring (31), a fixing nut (35), an adjusting bolt (33), a first fixing block (34) and a first anchoring steel plate (36); the adjusting bolt (33) passes through a reserved hole in the first fixing block (34); the fixing nuts (35) are respectively arranged at two ends of the first fixing block (34); the stopper (32) is arranged on a side of the adjusting bolt (33) close to the energy absorbing component (1); one end of the first connecting ring (31) is connected to the stopper (32) and the other end is connected to the chain structure (2); and the first anchoring steel plate (36) is fixedly connected to the first fixing block (34).

7. The multifunctional vertical connecting beam device based on the chain belt energy absorbing component according to claim 6 is characterized in that: The embedded component (5) comprises an embedded steel plate (51) and embedded steel rods (52), and a plurality of embedded steel rods (52) are evenly arranged on one side of the embedded steel plate (51).

8. The multifunctional vertical connecting beam device based on the chain belt energy absorbing component according to claim 7 is characterized in that: The first anchoring steel plate (36) passes through the embedded steel plate (51) via a first anchoring bolt (37).

9. The multifunctional vertical connecting beam device based on the chain belt energy absorbing component according to claim 8 is characterized in that: The beam connection assembly (4) comprises a second connection ring (41), a second fixing block (42) and a second anchoring steel plate (43); one end of the second connection ring (41) is connected to the second fixing block (42), and the other end is connected to the chain structure (2); the second anchoring steel plate (43) is fixedly connected to the second fixing block (42).

10. The multifunctional vertical connecting beam device based on the chain belt energy absorbing component according to claim 9 is characterized in that: The second anchoring steel plate (43) passes through the embedded steel plate (51) via a second anchoring bolt (44).

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