A multi-dimensional and multi-functional restraint device, system and method for suspension bridge

Abstract

The present invention discloses a multi-dimensional and multi-functional constraint device, system and method for a suspension bridge. The multi-dimensional and multi-functional constraint device for a suspension bridge comprises a first elastic energy absorbing part and a second elastic energy absorbing part. The first elastic energy absorbing part and the second elastic energy absorbing part are both located between a main tower and a main beam. The first elastic energy absorbing part has two contact surfaces arranged opposite to each other. The sizes of the two contact surfaces of the first elastic energy absorbing part are different. The second elastic energy absorbing part has two abutment surfaces arranged opposite to each other. The preset shear force of the second elastic energy absorbing part is greater than that of the first elastic energy absorbing part. The sizes of the two abutment surfaces are consistent and both are greater than the contact surface. The multi-dimensional and multi-functional constraint device for a suspension bridge of the present application can realize graded energy absorption buffering of the bridge to adapt to different application scenarios.

Description

Technical Field

[0001] The present invention belongs to the technical field of bridge energy consumption, and more specifically, relates to a multi-dimensional and multi-functional restraint device, system and method for a suspension bridge. Background Art

[0002] A bridge is a structure built on rivers, lakes, and seas to allow vehicles and pedestrians to pass smoothly. The three-tower suspension bridge has a wide range of applications in wider river valleys due to its strong span capacity.

[0003] The three-tower suspension bridge has low stiffness and low damping. The geometric nonlinear effect caused by the flexibility of the bridge structure is more prominent. It is more sensitive to dynamic effects such as vehicle live load, temperature, strong wind, and earthquake, and the static and dynamic response of the structure is difficult to coordinate. A reasonable constraint system is a technical problem to solve the poor static and dynamic stress performance of the long-span three-tower suspension bridge. In traditional double-tower suspension bridges, the main beam and the main tower will undergo obvious relative deformation under the action of temperature, so it is difficult to set the main beam displacement constraint device. However, in the three-tower suspension bridge, the middle tower is located at the symmetrical point of the structure along the bridge direction, and the temperature deformation fixed point of the main beam along the bridge direction is also at this position. Therefore, the main beam-middle tower will not undergo relative deformation under temperature deformation, which provides the possibility for the installation of the constraint device.

[0004] In order to enable the three-tower suspension bridge to cope with the influence of live loads, strong winds, earthquakes, etc., how to set a multifunctional constraint device between the main beam and the main tower, make full use of the deformation characteristics between the main beam and the main tower, and achieve multi-level control of the main beam displacement and bridge structure response has become a problem that needs to be solved. Summary of the invention

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a multi-dimensional and multi-functional restraint device, system and method for a suspension bridge, aiming to enable the bridge to have multi-level buffering capacity to adapt to loads of different intensities.

[0006] To achieve the above object, the present invention provides a multi-dimensional and multi-functional restraint device for a suspension bridge, comprising:

[0007] A first elastic energy absorbing member and a second elastic energy absorbing member, wherein the first elastic energy absorbing member and the second elastic energy absorbing member are both located between the main tower and the main beam, the first elastic energy absorbing member has two contact surfaces arranged opposite to each other, the two contact surfaces of the first elastic energy absorbing member are of different sizes, the second elastic energy absorbing member has two abutting surfaces arranged opposite to each other, the preset shear force of the second elastic energy absorbing member is greater than that of the first elastic energy absorbing member, and the two abutting surfaces are of the same size and are both larger than the contact surface.

[0008] In one embodiment, the first elastic energy absorbing member is in a truncated cone shape.

[0009] In one embodiment, the second elastic energy dissipation member is a U-shaped metal damper.

[0010] The present invention also provides a multi-dimensional and multi-functional restraint system for a suspension bridge, comprising:

[0011] A connecting plate, wherein two connecting plates are provided, and the two connecting plates are fixedly connected to the main tower and the main beam respectively, and grooves are provided on both connecting plates;

[0012] A snap-fit ​​assembly, wherein the snap-fit ​​assembly is provided in two groups, one side of each group of snap-fit ​​assemblies is connected to a connecting plate, and the other side is snapped into a groove, the width of the snap-fit ​​assembly is smaller than the length of the groove, and the length of the snap-fit ​​assembly is smaller than the distance between the two grooves; and

[0013] As described in any one of the above-mentioned multi-dimensional and multi-functional restraint devices for suspension bridges, the multi-dimensional and multi-functional restraint device for suspension bridges is installed between the two engaging components.

[0014] In one embodiment, the two engaging components are crossed to be connected to two connecting plates respectively.

[0015] In one embodiment, the engaging assembly is composed of a plurality of steel plates, and a plurality of grooves are provided on the connecting plates.

[0016] In one embodiment, the snap-fit ​​assembly includes an end plate connected to the rear ends of the plurality of steel plates.

[0017] In one embodiment, the end plate is provided with a recessed bolt hole, and the bolt hole is located between the plurality of steel plates.

[0018] The present invention also provides a method for using the multi-dimensional and multi-functional restraint device for a suspension bridge as described in any one of the above, comprising the following steps:

[0019] S100, based on different bridge load sizes, step-by-step preset shear forces of the first elastic energy absorbing member and the second elastic energy absorbing member;

[0020] S200, respectively adjusting the contact areas of the first elastic energy absorbing member and the second elastic energy absorbing member to correspond to the matching shear force;

[0021] S300. According to the graded energy consumption direction required for the bridge, a multi-dimensional and multi-functional restraint device for the suspension bridge is installed accordingly.

[0022] In one embodiment, the multi-dimensional and multi-functional restraint device for a suspension bridge is installed at a temperature fixed point of a main beam of a three-tower suspension bridge.

[0023] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0024] The multi-dimensional and multi-functional restraint device for a suspension bridge of the present application is provided with a first elastic energy-absorbing member and a second elastic energy-absorbing member between the main tower and the main beam, and the shear force of the second elastic energy-absorbing member is set to be greater than the first elastic buffer member, so as to achieve energy-absorbing buffering with a smaller movement amplitude when the load is relatively small for the main beam and the main tower. When the load on the main beam and the main tower is relatively large, the first elastic energy-absorbing member is damaged to disconnect the connection with the main tower and the main beam, so as to achieve energy-absorbing buffering with a larger movement amplitude when the load is relatively large. In addition, since the multi-dimensional and multi-functional restraint device for a suspension bridge is only a structural change, the multi-dimensional and multi-functional restraint device for a suspension bridge can act in the longitudinal and transverse directions of the bridge and adapt to different installation areas. The multi-dimensional and multi-functional restraint device for a suspension bridge of the present application can achieve graded energy-absorbing buffering of the bridge to adapt to different application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of one state of use of a multi-dimensional and multi-functional restraint device for a suspension bridge according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of another state of use of a multi-dimensional and multi-functional restraint device for a suspension bridge according to an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of another state of use of a multi-dimensional and multi-functional restraint device for a suspension bridge according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic structural diagram of a first elastic energy-absorbing member of a multi-dimensional and multi-functional restraint device for a suspension bridge according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic structural diagram of a second elastic energy-absorbing member of a multi-dimensional and multi-functional restraint device for a suspension bridge according to an embodiment of the present invention;

[0030] Figure 6 An exploded diagram of a multi-dimensional and multi-functional restraint system for a suspension bridge according to an embodiment of the present invention;

[0031] Figure 7 This is a schematic structural diagram of a multi-dimensional and multi-functional restraint system for a suspension bridge according to an embodiment of the present invention;

[0032] Figure 8 for Figure 7 Enlarged view of point A in the middle;

[0033] Fig. 9 The present invention is a flowchart of a method for using a multi-dimensional and multi-functional restraint device for a suspension bridge according to an embodiment of the present invention.

[0034] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0035] 10. Multi-dimensional and multifunctional restraint system for suspension bridge; 11. Connecting plate; 111. Groove; 12. Clamping assembly; 121. Steel plate; 122. End plate; 1221. Bolt hole; 13. Multi-dimensional and multifunctional restraint device for suspension bridge; 131. First elastic energy absorbing part; 1311. Abutment surface; 132. Second elastic energy absorbing part; 1321. Abutment surface. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their 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 addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] like Figures 1 to 5 As shown, the present invention provides a multi-dimensional and multi-functional restraint device 13 for a suspension bridge. The multi-dimensional and multi-functional restraint device 13 for a suspension bridge includes a first elastic energy absorbing member 131 and a second elastic energy absorbing member 132 .

[0040] The first elastic energy absorbing member 131 and the second elastic energy absorbing member 132 are both arranged between the main tower and the main beam. The first elastic energy absorbing member 131 has two contact surfaces arranged opposite to each other. The two contact surfaces of the first elastic energy absorbing member 131 are of different sizes. The second elastic energy absorbing member 132 has two abutting surfaces 1321 arranged opposite to each other. The two abutting surfaces 1321 are of the same size and are both larger than the contact surfaces. The movable distance of the second elastic energy absorbing member 132 is greater than that of the first elastic member.

[0041] Specifically, the two opposite contact surfaces of the first elastic member are used to connect with the two opposite surfaces of the main tower and the main beam respectively. When a train or a car passes by the bridge, the load acting on the main beam in the direction along the bridge can be transferred to the contact surface. Since the first elastic member is elastic, the side of the first elastic member in contact with the main beam can move relative to the side of the first two abutting surfaces 1321 elastic member in contact with the main tower. Correspondingly, since the second elastic energy absorbing member 132 is respectively connected with the main tower and the main beam, and the second elastic energy absorbing member 132 is elastic, the second elastic energy absorbing member 132 can also be driven by the main beam to move relative to both sides.

[0042] Furthermore, the preset shear force of the second elastic energy absorbing member 132 is greater than that of the first elastic energy absorbing member 131. The preset shear force refers to the maximum shear force that the second elastic energy absorbing member 132 and the first elastic energy absorbing member 131 can withstand, that is, when the preset shear force of the first elastic energy absorbing member 131 is exceeded, the first elastic energy absorbing member 131 will be damaged, while the second elastic energy absorbing member 132 can work normally. Specifically, when cars and other vehicles pass along the bridge, the main beam is subjected to a smaller load in the along-bridge direction. At this time, since the main beam and the main tower are connected by two components, namely the first elastic energy absorbing member 131 and the second elastic energy absorbing member 132, the connection strength between the main beam and the main tower is relatively large. In this case, the first elastic energy absorbing member 131 and the second elastic energy absorbing member 132 can move relatively, and their movement range is constrained. This prevents cars driving on the main beam from being affected by the large shaking of the main beam. When the bridge encounters an earthquake or other situation, the load on the bridge is large, which makes the movement range between the main tower and the main beam large. The first elastic energy absorbing member 131 is damaged due to the large shear force. At this time, the main tower and the main beam are connected by the second elastic energy absorbing member 132, and the connection strength is correspondingly reduced, which enables the main tower and the main beam to respond to the earthquake with a larger movement range. Since the abutting surface 1321 of the second elastic energy absorbing member 132 is larger, the elastic deformation of the second elastic energy absorbing member 132 is larger to meet the larger movement distance between the main tower and the main beam.

[0043] It should be noted that according to τ=G*(deltau / deltax), τ is shear stress, G is shear modulus, deltau is displacement, and deltax is displacement; G=E / (2(1+NU)), E is elastic modulus, NU is Poisson's ratio; and Poisson's ratio is the ratio of the lateral normal strain of an object to the axial normal strain. It is not difficult to understand that due to the different sizes of the two contact surfaces of the first elastic energy absorbing member 131, the first elastic energy absorbing member 131 is easy to deform axially, that is, the axial deformation of the first elastic energy absorbing member 131 is greater than the lateral deformation, so that the Poisson's ratio of the first elastic energy absorbing member 131 is small, and then the shear modulus of the first elastic energy absorbing member 131 is large, and the shear stress it is subjected to is also large. It can be understood that the first elastic energy absorbing member 131 changes the shape to change the Poisson's ratio, thereby adjusting the preset shear force of the first elastic energy absorbing member 131.

[0044] In actual use, since the multi-dimensional and multi-functional restraint device 13 of the suspension bridge of the present application realizes graded buffer energy dissipation by changing the structural construction of the first elastic energy dissipation member 131 and the second elastic energy dissipation member 132, the installation positions of the first elastic energy dissipation member 131 and the second elastic energy dissipation member 132 can be adaptively adjusted. For example, when the width of the connection surface between the main tower and the main beam is narrow, the following can be adopted: Figure 1 The installation method shown is to arrange the first elastic energy absorbing member 131 and the second elastic buffer member in a straight line in the vertical direction. When the height of the connection surface between the main tower and the main beam is low, the following method can be used: Figure 2 The installation method shown is to arrange the first elastic energy absorbing member 131 and the second elastic buffer member in a straight line in the horizontal direction. Of course, if the area available for installation between the main tower and the main beam is large, the following method can also be adopted. Figure 3 Installation method shown.

[0045] It is worth noting that, since the multi-dimensional and multi-functional restraint device 13 of the suspension bridge of the present invention realizes graded buffer energy consumption by changing the structural construction of the first elastic energy absorbing member 131 and the second elastic energy absorbing member 132, the multi-dimensional and multi-functional restraint device 13 of the suspension bridge can be used not only in the longitudinal direction of the bridge, but also in the transverse direction of the bridge. Please refer to Figure 4 As shown, the first elastic energy absorbing member 131 and the second elastic buffer member can be installed vertically and connected to the main beam and the main tower respectively to achieve buffering energy absorption in the transverse direction of the bridge.

[0046] It can be understood that the multi-dimensional and multifunctional restraint device 13 of the suspension bridge of the present application, through the first elastic energy absorbing member 131 and the second elastic energy absorbing member 132 between the main tower and the main beam, and the shear force of the second elastic energy absorbing member 132 is set to be greater than the first elastic buffer member, so as to achieve energy buffering with a smaller movement amplitude when the load is relatively small for the main beam and the main tower. When the load on the main beam and the main tower is relatively large, the first elastic energy absorbing member 131 is damaged to disconnect the connection with the main tower and the main beam, so as to achieve energy buffering with a larger movement amplitude when the load is relatively large. In addition, since the multi-dimensional and multifunctional restraint device 13 of the suspension bridge is only a structural change, this enables the multi-dimensional and multifunctional restraint device 13 of the suspension bridge to act in the longitudinal and transverse directions of the bridge and adapt to different installation areas. The multi-dimensional and multifunctional restraint device 13 of the suspension bridge of the present application can achieve graded energy buffering of the bridge to adapt to different application scenarios.

[0047] In one embodiment, the first elastic energy absorbing member 131 is in the shape of a truncated cone. Among them, the upper and lower bottom surfaces of the truncated cone-shaped first elastic energy absorbing member 131 are two contact surfaces of different sizes. When the first elastic energy absorbing member 131 is damaged by shear force, specifically, the first elastic energy absorbing member 131 breaks from the maximum shear stress action surface. The side surface of the truncated cone-shaped first elastic energy absorbing member 131 is a curved surface. When the first elastic energy absorbing member 131 of this shape is subjected to force in all directions on the side surface, it can be elastically deformed accordingly. That is to say, when the multi-dimensional and multi-functional restraint device 13 of the suspension bridge is set in the direction along the bridge to realize graded energy consumption and buffering in the direction along the bridge, the first elastic energy absorbing member 131 in the transverse direction of the bridge can also be subjected to energy consumption and buffering accordingly when subjected to load, so as to achieve the multi-directional buffering capability of the multi-dimensional and multi-functional restraint device 13 of the suspension bridge. Accordingly, the multi-dimensional and multi-functional restraint device 13 of the suspension bridge is set in the transverse direction of the bridge, and can also be subjected to energy consumption and buffering accordingly in the direction along the bridge.

[0048] In one embodiment, the second elastic energy dissipation member 132 is a U-shaped metal damper. Specifically, the second elastic energy dissipation member 132 is formed by connecting the two ends of the mouth of two U-shaped metal dampers to form an elliptical shape. Since the metal material has elasticity and damping properties, the U-shaped metal damper can dissipate the energy in the vibration system in different forms, thereby reducing the vibration amplitude of the system. Since the second elastic energy absorbing member 132 is elliptical, and the contact surface 1321 of the elliptical second elastic energy absorbing member 132 is an arc surface, when the elliptical second elastic energy absorbing member 132 buffers and dissipates energy in the long axis direction, the two side surfaces of the elliptical second elastic energy absorbing member 132 can contact the main beam or the main tower accordingly. Specifically, when the long axis direction of the elliptical second elastic energy absorbing member 132 is consistent with the along-bridge direction, the second elastic energy absorbing member 132 buffers and dissipates energy in the along-bridge direction. When the main beam drives the second elastic energy absorbing member 132 to move relatively, the arc-shaped second elastic energy absorbing member 132 can roll back and forth on the main tower and the main beam to achieve buffering and dissipation. Since the second elastic energy absorbing member 132 is The abutment surface 1321 of 32 is larger, which makes the elliptical second elastic energy absorbing member 132 roll more smoothly on the main beam and the main tower. It should be noted that since the elastic deformation distance of the first elastic energy absorbing member 131 in the length direction is limited, when the load in the vertical bridge direction of the bridge is small, the vertical buffering energy absorption capacity of the multi-dimensional and multifunctional restraint device 13 of the suspension bridge is small, so as to avoid shaking in the vertical direction and affecting the driving of the car on the main beam. When the first elastic energy absorbing member 131 is damaged, since the elliptical second elastic energy absorbing member 132 has a movable gap in the middle, the second elastic energy absorbing member 132 can cope with the vertical load brought by the earthquake.

[0049] like Figures 6 to 8 As shown, the present invention further provides a suspension bridge multi-dimensional and multifunctional restraint system 10, which includes a connecting plate 11, a snap-fit ​​assembly 12 and the above-mentioned suspension bridge multi-dimensional and multifunctional restraint device 13.

[0050] There are two connecting plates 11, which are fixedly connected to the main tower and the main beam respectively. Grooves 111 are concavely provided on the two connecting plates 11. The snap-fit ​​components 12 are provided in two groups, one side of each snap-fit ​​component 12 is connected to a connecting plate 11, and the other side is snapped into the groove 111. The width of the snap-fit ​​component 12 is smaller than the length of the groove 111, and the length of the snap-fit ​​component 12 is smaller than the distance between the two grooves 111. The multi-dimensional and multi-functional restraint device 13 of the suspension bridge is installed between the two snap-fit ​​components 12.

[0051] Specifically, the two connecting plates 11 are relatively spaced apart, and one side of the two connecting plates 11 used for connecting with the main tower and the main beam is smooth and flat and has a large area, so that the two connecting plates 11 can respectively establish a relatively tight connection with the main tower and the main beam, and the two groups of snap-fit ​​components 12 are vertically spaced apart between the two connecting plates 11, and the spacing between the two groups of snap-fit ​​components 12 can be used for the placement of the multi-dimensional and multi-functional restraint device 13 of the suspension bridge. Since the width of the snap-fit ​​component 12 is less than the length of the groove 111, the snap-fit ​​component 12 can move in the direction of the inner groove length of the groove 111, which needs to be explained Yes, the length direction of the groove 111 corresponds to the direction along the bridge. It is easy to understand that under the drive of the locking assembly 12, the multi-dimensional and multi-functional restraint device 13 of the suspension bridge has a larger movable distance. Accordingly, the length of the locking assembly 12 is smaller than the distance between the two grooves 111, which enables the two sides of the length direction of the locking assembly 12 to move in the connection direction of the two grooves 111. It should be noted that the connection direction of the two grooves 111 corresponds to the transverse direction of the bridge. It is not difficult to understand that under the drive of the locking assembly 12, the multi-dimensional and multi-functional restraint device 13 of the suspension bridge has a larger movable distance. It can be understood that by the engagement assembly 12 moving in the groove 111 on the connecting plate 11, while ensuring the connection stability between the main beam and the main tower, the multi-dimensional and multi-functional restraint device 13 of the suspension bridge can move a larger distance, thereby achieving a better buffering and energy dissipation effect. The two engagement assemblies 12 are arranged at a relative interval, which enables the multi-dimensional and multi-functional restraint device 13 of the suspension bridge to have a position available for installation. In addition, when an earthquake occurs, the first elastic energy dissipation member 131 is damaged to ensure that the multi-dimensional and multi-functional restraint device 13 of the suspension bridge has a larger buffering and energy dissipation performance. After the earthquake, it is necessary to first connect the first elastic energy dissipation member 131 to the main tower and the main After the beams are disassembled, the newly made first elastic energy absorbing member 131 is installed. Due to the large mass of the main tower and the main beam, the first elastic energy absorbing member 131 is directly connected to the main tower and the main beam, which makes it difficult to disassemble the damaged first elastic energy absorbing member 131 and difficult to install the newly made first elastic energy absorbing member 131, that is, it is difficult for the bridge to be quickly opened to traffic after an earthquake. However, the first elastic energy absorbing member 131 is directly connected to the connecting plate 11 and the locking assembly 12, and the groove 111 on the connecting plate 11 provides a movable space, which makes it easier to install and disassemble the first elastic energy absorbing member 131, thereby being able to meet the demand for rapid traffic after an earthquake on the bridge.

[0052] In one embodiment, the two engaging assemblies 12 are cross-connected to be connected to the two connecting plates respectively. The cross-connection means that the two engaging assemblies 12 are arranged opposite to each other on one side for inserting into the groove 111. The advantage of such arrangement is that it can prevent the two engaging assemblies 12 from being subjected to a large load, resulting in a large movable spacing between the two engaging assemblies 12, thereby preventing the two engaging assemblies 12 from being separated from the groove 111 on one side, causing the main tower and the main beam to lose connection and cause safety hazards.

[0053] Furthermore, the clamping assembly 12 is composed of a plurality of steel plates 121, and the grooves 111 are provided on the connecting plate 11. Among them, since the plurality of steel plates 121 have a plurality of steel plates 121, the upper and lower sides of each steel plate 121 are in contact with the grooves 111 compared to a single steel plate 121, which makes the contact area larger, and thus the connection stability is higher. At the same time, since the steel plates 121 move in the grooves 111, the steel plates 121 will experience normal wear during the movement. If a single steel plate 121 is used, when the wear of the single steel plate 121 is more serious, it is difficult to break. The accommodation rate of the plurality of steel plates 121 is higher, which can avoid the occurrence of the above situation. In addition, due to the intervals between each steel plate 121, while ensuring the connection stability, it is avoided that the steel plates 121 are difficult to move due to their heavy mass.

[0054] Furthermore, the clamping assembly 12 includes an end plate 122, and the end plate 122 is connected to the tail ends of the plurality of steel plates 121. Specifically, the clamping assembly 12 is connected to the connecting plate 11 through the end plate 122. Since the surface of the end plate 122 is flat, the end plate 122 can be attached to the surface of the connecting plate 11, and the tail ends of the plurality of steel plates 121 are spaced apart on the surface of the end plate 122. It is not difficult to understand that by connecting the plurality of steel plates 121 through an end plate 122, it is avoided that the plurality of steel plates 121 need to be connected to the connecting plate 11, thus saving the installation process. At the same time, the larger installation area of ​​the end plate 122 makes the connection stability between the steel plates 121 and the connecting plate 11 higher.

[0055] To further improve the stability of the connection, in this embodiment, the multiple steel plates 121 and the end plate 122 are integrally formed and cast. It is easy to understand that the multiple steel plates 121 and the end plate 122 after integral molding can form a whole, and the overall structural strength is higher.

[0056] In one embodiment, the end plate 122 is provided with a bolt hole 1221, and the bolt hole 1221 is located between the multiple steel plates 121. Specifically, since there is a gap between the multiple steel plates 121, a position for setting the bolt hole 1221 can be vacated in the gap between two adjacent steel plates 121 on the end plate 122 for the bolt to pass through, and the bolt can establish a connection with the connecting plate 11 after passing through the end plate 122. It is not difficult to understand that by setting the bolt hole 1221 at the above position and then passing the bolt through the bolt hole 1221, the end plate 122 can be connected to the connecting plate 11 at multiple points, further improving the tightness of the connection.

[0057] The present invention also provides a method for using the multi-dimensional and multi-functional restraint device 13 for a suspension bridge, which specifically comprises the following steps:

[0058] S100. Based on different bridge load sizes, the shear force of the first elastic energy absorbing member 131 and the second elastic energy absorbing member 132 are preset in steps. Among them, different bridge load sizes refer to the load that the bridge can bear in the preset design. For example, the bridge has a maximum traffic volume. When the maximum traffic volume is met, the load borne by the bridge is the minimum shear force of the first elastic energy absorbing member 131. Correspondingly, the minimum seismic load that the bridge can bear is the maximum shear force of the first elastic energy absorbing member 131. Preferably, the shear force of the first elastic energy absorbing member 131 should be designed to be between the above two, and the shear force of the second elastic energy absorbing member 132 should meet the minimum seismic load that the bridge can bear. It is not difficult to understand that the purpose of graded energy absorption buffering can be achieved through this step-by-step preset method.

[0059] S200, respectively adjust the contact areas of the first elastic energy absorbing member 131 and the second elastic energy absorbing member 132 to correspond to the matching shear force. According to τ=G*(deltau / deltax), τ is the shear stress, G is the shear modulus, deltau is the displacement, and deltax is the displacement amount. It is not difficult to understand that when the first elastic energy absorbing member 131 and the second elastic energy absorbing member 132 are connected at the same time for energy dissipation buffering, since both are connected to the main tower and the main beam at the same time, the displacement and displacement amount of the two are the same, that is, the shear modulus is changed to correspond to the shear force of the first elastic energy absorbing member 131 and the second elastic energy absorbing member 132. Further, according to G=E / (2(1+NU)), E is the elastic modulus and NU is the Poisson's ratio. It is easy to understand that in order to save manufacturing and use costs, in this embodiment, the first elastic energy absorbing member 131 and the second elastic energy absorbing member 132 are made of the same material, so that the elastic modulus of the first elastic energy absorbing member 131 and the second elastic energy absorbing member 132 are the same, that is, the shear force of the first elastic energy absorbing member 131 and the second elastic energy absorbing member 132 is correspondingly adjusted by changing the Poisson's ratio. Further, the Poisson's ratio is the ratio of the lateral normal strain of an object to the axial normal strain. In this embodiment, due to the different sizes of the two contact surfaces of the first elastic energy absorbing member 131, the first elastic energy absorbing member 131 is easy to deform axially, that is, the axial deformation of the first elastic energy absorbing member 131 is greater than the lateral deformation, so that the Poisson's ratio of the first elastic energy absorbing member 131 is small, and then the shear modulus of the first elastic energy absorbing member 131 is large, and the shear stress it is subjected to is also large.

[0060] S300, according to the required graded energy dissipation direction of the bridge, the suspension bridge multi-dimensional multi-functional restraint device 13 is installed accordingly. In this, since the first elastic energy dissipation member 131 and the second elastic energy dissipation member 132 are both constructed to achieve graded buffering, the setting direction of the first elastic energy dissipation member 131 and the second elastic energy dissipation member 132 is adjusted accordingly, that is, graded buffering energy dissipation in the transverse direction or the longitudinal direction of the bridge can be achieved.

[0061] Furthermore, the multi-dimensional and multi-functional restraint device 13 of the suspension bridge is installed at the temperature fixed point of the main beam of the three-tower suspension bridge. Among them, since the main beam is prefabricated with concrete or steel structure, when the temperature changes, the main beam will also deform accordingly, specifically thermal expansion and contraction. When the main beam is deformed due to temperature, the middle tower of the main beam of the three-tower suspension bridge will not be relatively deformed. The three-tower suspension bridge includes a front tower, a middle tower and a rear tower along the bridge direction. Since the two ends of the main beam are extended or shortened, the middle tower is the temperature fixed point, that is, the main beam will expand and contract with the middle tower as the symmetrical point. Installing the multi-dimensional and multi-functional restraint device 13 of the suspension bridge at the temperature fixed point avoids the use of the multi-dimensional and multi-functional restraint device 13 of the suspension bridge being affected by the expansion and contraction of the main beam.

[0062] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A multi-dimensional and multi-functional restraint system for a suspension bridge, characterized in that: include: A connecting plate, wherein two connecting plates are provided, and the two connecting plates are fixedly connected to the main tower and the main beam respectively, and both connecting plates are provided with grooves; A snap-fit ​​assembly, wherein the snap-fit ​​assembly is provided in two groups, one side of each group of snap-fit ​​assemblies is connected to a connecting plate, and the other side is snapped into a groove, the width of the snap-fit ​​assembly is smaller than the length of the groove, and the length of the snap-fit ​​assembly is smaller than the distance between the two grooves; and A multi-dimensional and multi-functional restraint device for a suspension bridge, wherein the multi-dimensional and multi-functional restraint device for a suspension bridge is installed between the two engaging assemblies; The two engaging components are crossed to be connected to the two connecting plates respectively; The clamping assembly is composed of multiple steel plates, and the groove is provided with multiple strips on the connecting plate; The multi-dimensional and multi-functional restraint device for a suspension bridge comprises a first elastic energy absorbing member and a second elastic energy absorbing member, both of which are located between the main tower and the main beam, the first elastic energy absorbing member having two contact surfaces arranged opposite to each other, the two contact surfaces of the first elastic energy absorbing member having different sizes, the second elastic energy absorbing member having two abutting surfaces arranged opposite to each other, the preset shear force of the second elastic energy absorbing member being greater than that of the first elastic energy absorbing member, the two abutting surfaces having the same size and both being greater than the contact surface; The first elastic energy absorbing member is in a truncated cone shape; The second elastic energy dissipation member is a U-shaped metal damper; The second elastic energy absorbing member is connected by two ends of the mouth of the two U-shaped metal dampers to form an elliptical shape, and the contact surface of the elliptical second elastic energy absorbing member is an arc surface. When the elliptical second elastic energy absorbing member buffers and absorbs energy from the long axis direction, the two side surfaces of the elliptical second elastic energy absorbing member can contact the main beam or the main tower accordingly; When the long axis direction of the elliptical second elastic energy absorbing member is consistent with the direction along the bridge, the second elastic energy absorbing member performs buffering energy dissipation in the direction along the bridge. When the main beam drives the second elastic energy absorbing member to move relatively, the arc-shaped second elastic energy absorbing member can roll back and forth on the main tower and the main beam to achieve buffering energy dissipation. The abutment surface of the second elastic energy absorbing member is large, so that the elliptical second elastic energy absorbing member rolls more smoothly on the main beam and the main tower. The elastic deformation distance of the first elastic energy absorbing member in the length direction is limited to avoid shaking in the vertical direction and affecting the driving of the car on the main beam. When the first elastic energy absorbing member is damaged, the middle part of the elliptical second elastic energy absorbing member has a movable gap, so that the second elastic energy absorbing member can cope with the vertical load brought by the earthquake.

2. The multi-dimensional and multi-functional restraint system for a suspension bridge according to claim 1, characterized in that: The clamping assembly includes an end plate connected to the rear ends of the plurality of steel plates.

3. The multi-dimensional and multi-functional restraint system for a suspension bridge according to claim 2, characterized in that: The end plate is concavely provided with bolt holes, and the bolt holes are located between the plurality of steel plates.

4. A method for using the multi-dimensional and multi-functional restraint system for a suspension bridge according to any one of claims 1 to 3, characterized in that: The following steps are involved: S100, based on different bridge load sizes, step-by-step preset shear forces of the first elastic energy absorbing member and the second elastic energy absorbing member; S200, respectively adjusting the contact areas of the first elastic energy absorbing member and the second elastic energy absorbing member to correspond to the matching shear force; S300. According to the graded energy consumption direction required for the bridge, a multi-dimensional and multi-functional restraint device for the suspension bridge is installed accordingly.

5. The method for using the multi-dimensional and multi-functional restraint device for a suspension bridge according to claim 4, characterized in that: The multi-dimensional and multi-functional restraint device for suspension bridge is installed at the temperature fixed point of the main beam of the three-tower suspension bridge.

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