Bridge girder transverse creeping limiting and monitoring integrated device and using method thereof

Abstract

The invention relates to a transverse creeping limiting and monitoring integrated device for a bridge girder and a using method of the transverse creeping limiting and monitoring integrated device. The integrated device is transversely mounted between a main beam and a cover beam of a bridge, and specifically comprises a base arranged on the cover beam; the contact block is arranged on the main beam; the limiting module is arranged between the base and the contact block and is used for limiting the transverse displacement of the main beam and / or at least partially recovering the transverse position of the main beam; and the monitoring module is arranged on the base and is used for monitoring the transverse displacement of the bridge. The limiting module comprises a rubber blocking block arranged on the base, a first spring and a second spring, wherein the first spring and the second spring penetrate through the rubber blocking block and are connected with the base. The rigidity of the first spring is smaller than that of the second spring, and the other end of the first spring is rotationally connected with the contact block. Compared with the prior art, the transverse displacement of the bridge girder can be effectively limited and monitored, and comprehensive guarantee is provided for safe operation of the bridge.

Description

Technical Field

[0001] The present invention relates to the technical field of bridges, and more particularly to an integrated device for transverse creep limit and monitoring of bridge main girders and a method for using the same. Background Art

[0002] As an important part of transportation infrastructure, bridges bear heavy traffic loads and long-term load effects. Therefore, the stability and safety of their structures are crucial for smooth traffic and social and economic development. The transverse creep of bridge main girders is usually affected by factors such as temperature changes, traffic loads, and seismic effects. The transverse creep of bridge main girders may cause structural deformation and joint misalignment, and in severe cases, it may even affect the overall safety of the bridge.

[0003] At present, bridge lateral displacement control technology has been gradually developed, but in practical applications, the following problems still exist: (1) Most of the existing transverse limit devices for bridge main girders are set up by installing stoppers on the cap beams. However, there are often gaps between the stoppers and the main girders. When the main girders are in close contact with the stoppers, the transverse creep of the main girders is often large, and in the future service state of the bridge, the stoppers are prone to damage. Moreover, the setting of stoppers often lacks dynamic adjustment functions and is difficult to adapt to the changes in external actions during the long-term service of the bridge structure. (2) At present, the monitoring means for the transverse creep of bridge main girders mainly rely on regular manual inspections, which have certain limitations in terms of monitoring timeliness and accuracy and are difficult to detect potential structural problems in a timely manner. (3) There is a lack of comprehensive devices in the existing technology that can simultaneously achieve the transverse creep limit and real-time monitoring of bridge main girders, which cannot effectively avoid the long-term negative impacts caused by lateral displacement on the bridge, nor can it understand the operating state of the bridge under various load actions in real time.

[0004] Therefore, developing a device that can combine the transverse creep limit and real-time monitoring of bridge main girders has become an urgent problem to be solved in the current field of bridge engineering.

[0005] CN221545260U discloses a lateral movement limiting assembly for an energy dissipation type bridge in the field of bridge seismic technology, which includes multiple pairs of energy dissipation limiting mechanisms for installation on the inner side of the pier cap block, and multiple pairs of buffer mechanisms installed on the outer side of the bridge body, and the buffer mechanisms are all located within the corresponding energy dissipation limiting mechanisms. The energy dissipation limiting mechanism includes a block steel plate anchored to the inner side of the pier cap block, which can dissipate the action of seismic forces and limit the displacement of the bridge body. However, this technical solution requires the installation of mechanisms on both the outer side of the bridge body and the inner side of the block to work together, with high precision requirements for the installation of the two mechanisms; and installing mechanisms on the outer side of the bridge body will damage the surface of the main girder, which is the main load-bearing member, reducing the safety and durability of the main girder; and under extreme loads such as strong earthquakes, once the displacement exceeds the maximum allowable compression of the internal spring member, the mechanism on the outer side of the bridge body and the limit seat installed on the block will come into rigid contact, further directly applying the force to the block, and the block is prone to damage. In addition, this technical solution is mainly applied under seismic conditions and does not monitor lateral creep. And under the normal operating state of the bridge, lateral creep will also occur under vehicle loads and temperature effects. For the bridge maintenance department, it is necessary to timely understand the state of the bridge under the operating state in order to maintain the bridge in a timely manner.

[0006] In view of the above problems, there is an urgent need to develop a new integrated device that combines the functions of limiting and real-time monitoring technology to take into account the dual functions of effectively limiting the lateral displacement of the bridge main girder and monitoring its operating state, providing all-round protection for the safe operation of the bridge. Summary of the Invention

[0007] The purpose of the present invention is to provide a device for integrating the limit of lateral creep and monitoring of the bridge main girder and its usage method to overcome the defect of the prior art that it is impossible to take into account both limiting the lateral displacement of the bridge main girder and monitoring the operating state of the bridge.

[0008] The purpose of the present invention can be achieved through the following technical solutions:

[0009] The present invention first provides a device for integrating the limit of lateral creep and monitoring of the bridge main girder, which is horizontally installed between the main girder and the pier cap of the bridge. The integrated device includes:

[0010] A base provided on the pier cap;

[0011] A contact block provided on the main girder;

[0012] A limit module provided between the base and the contact block for limiting the lateral displacement of the main girder and / or at least partially restoring the lateral position of the main girder;

[0013] A monitoring module provided on the base for monitoring the lateral displacement of the bridge;

[0014] Among them, the limiting module includes a rubber blocking block provided on the base, and a first spring and a second spring that pass through the rubber blocking block and are connected to the base; the stiffness of the first spring is less than that of the second spring, and the other end of the first spring is rotatably connected to the contact block.

[0015] Furthermore, the base is installed on the stop block of the capping beam through fasteners.

[0016] Furthermore, the contact block is fitted and installed on the main girder web of the main beam.

[0017] Furthermore, the inclination angle α of the contact block close to the main girder surface of the bridge is consistent with the inclination angle of the main girder web.

[0018] Furthermore, the first spring and the second spring are coaxially arranged, and the inner diameter of the second spring is greater than the outer diameter of the first spring.

[0019] Furthermore, the length of the second spring is less than the length of the first spring.

[0020] Furthermore, the first spring is connected to the side of the contact block facing away from the main beam through a spherical hinge.

[0021] Furthermore, the spherical hinge includes a spherical hinge sphere connected to the end of the first spring and a spherical hinge housing fitted on the contact block.

[0022] Furthermore, the monitoring module includes a laser displacement sensor, a power supply connected to the laser displacement sensor, and a protective cover covering the outside of the laser displacement sensor and the power supply.

[0023] Furthermore, the protective cover is made of a transparent material and will not block the laser emitted by the laser displacement sensor.

[0024] Furthermore, the height of the protective cover is less than the thickness of the rubber blocking block, and the height of the protective cover is greater than the heights of the laser displacement sensor and the power supply.

[0025] Furthermore, a reflector matching the laser displacement sensor is installed on the side of the contact block facing away from the main beam for reflecting the laser emitted by the laser displacement sensor.

[0026] The present invention also provides a method for using an integrated device for lateral creep limit and monitoring of a bridge main beam, including the following steps:

[0027] S1. Calculate the maximum lateral force under each load condition or combination of the target bridge;

[0028] Among them, the maximum lateral force under the normal service state of the bridge is F1, the maximum lateral force F2 under the ultimate limit state of bearing capacity, and the conservative coefficients are γ1 and γ2 respectively;

[0029] S2. Determine the limit value of the lateral displacement of the target bridge;

[0030] Among them, the displacement limit value under the normal service state of the bridge is D1, and the displacement limit value under the ultimate bearing capacity state of the bridge is D2;

[0031] S3. Determine the lengths l and stiffnesses K of the first spring and the second spring;

[0032] S4. Install the base, contact block, limit module and monitoring module;

[0033] S5. Perform lateral creep limit and monitoring on the main girder of the bridge.

[0034] Furthermore, in step S3, the lengths l and stiffnesses K of the first spring and the second spring are determined according to the following boundary conditions:

[0035]

[0036] Among them, the stiffness of the first spring is K1, and the length is l1; the stiffness of the second spring is K2, and the length is l2, satisfying K2 > K1 and l2 < l1.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] (1) Through the synergistic effect of the limit module and the monitoring module, the integrated device of the present invention can effectively limit and monitor the lateral displacement of the main girder of the bridge under normal operation and extreme seismic loads; and the limit module of the present invention can achieve hierarchical limit through springs and rubber blocking blocks with different stiffnesses, which not only meets the requirements of the normal service state but also provides stronger limiting ability under the ultimate state.

[0039] (2) The present invention combines small-stiffness springs, large-stiffness springs and rubber blocking blocks in sequence to achieve the segmented stiffness of the limit module, which is beneficial to the force of the bridge while limiting the lateral displacement of the bridge. When the lateral displacement of the bridge is small, only the small-stiffness spring works, so as not to excessively increase the internal force level of the main girder of the bridge during the limiting process; when the lateral displacement of the bridge is large, there is a risk that the main girder of the bridge slides off the support. Compared with limiting the internal force level of the bridge, limiting is more important. At this time, the small-stiffness spring and the large-stiffness spring work together, greatly improving the lateral limiting ability; under extreme loads such as earthquakes, the springs in the limiting device can play an energy dissipation role. If the extreme load is so large that the spring is crushed and fails, the rubber limit block will play a role in blocking and buffering, preventing the main girder from squeezing and damaging the monitoring module, and also preventing hard contact between the main girder and the stop block.

[0040] (3) When the external actions or loads that cause the lateral creep of the main girder disappear during the operation of the bridge, the present invention can utilize the elastic forces of the large-stiffness spring and the small-stiffness spring to restore or partially restore the lateral position of the bridge main girder. Moreover, through the rotational connection design between the first spring and the contact block, it is ensured that the spring can adapt to the displacement direction of the main girder, improving the restoration effect and preventing the bridge structure from being damaged due to excessive displacement.

[0041] (4) The monitoring module of the present invention can monitor the lateral displacement of the bridge in real time, providing data support, facilitating the timely detection of abnormalities, and providing all-round guarantee for the safe operation of the bridge. When the lateral displacement of the main girder reaches the limit value, the maintenance department can be notified in time for bridge maintenance to extend the service life of the bridge. After the device reaches the end of its service life, the stiffness of the device spring can be adjusted according to the actual service data of the specific bridge, enabling the device to better serve the specific bridge.

[0042] (5) The base, contact block, limit module, and monitoring module of the present invention adopt a modular design, which is convenient for installation and maintenance, applicable to various bridge structures, and particularly has a remarkable effect in bridges with prominent lateral displacement problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a schematic structural diagram of the bridge of the present invention.

[0044] Figure 2 is an installation schematic diagram of the integrated device of the present invention.

[0045] Figure 3 is a schematic structural diagram of the integrated device of the present invention.

[0046] Figure 4 is a schematic structural diagram of the integrated device of Embodiment 2 of the present invention.

[0047] Figure 5 is a schematic structural diagram of the monitoring module of Embodiment 3 of the present invention.

[0048] Figure 6 is a schematic structural diagram of the base of the present invention.

[0049] Figure 7 is a schematic structural diagram of the first spring and the spherical hinge sphere of the present invention.

[0050] Figure 8 is a schematic structural diagram of the contact block and the spherical hinge housing of the present invention.

[0051] Figure 9 is a flowchart of the usage method of the integrated device of the present invention.

[0052] Description of the reference numerals in the drawings:

[0053] 1 - Bridge, 11 - Main girder, 111 - Main girder web, 12 - Capping beam, 121 - Stop block, 13 - Bearing;

[0054] 2 - Foundation;

[0055] 3 - Contact block;

[0056] 4 - Limiting module, 41 - Rubber blocking block, 42 - First spring, 43 - Second spring, 44 - Ball hinge, 441 - Ball hinge sphere, 442 - Ball hinge housing;

[0057] 5 - Monitoring module, 51 - Laser displacement meter, 52 - Power supply, 53 - Protective cover, 54 - Reflector, 55 - Wire;

[0058] 6 - Fastener. Detailed implementation mode

[0059] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and gives the detailed implementation mode and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0060] In the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly defined and limited, the terms "installed", "connected", "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 an indirect connection through an intermediate medium, and it can be the communication inside two elements. 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 situations.

[0061] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0062] Embodiment 1:

[0063] This embodiment provides an integrated device for lateral creep limit and monitoring of the main girder of a bridge. The integrated device is horizontally installed between the main girder 11 and the capping beam 12 of the bridge 1. AsFigures 1-4 As shown in the figure, the integrated device of this embodiment specifically includes a base 2 provided on the capping beam 12, a contact block 3 provided on the main beam 11, a limiting module 4 provided between the base 2 and the contact block 3, and a monitoring module 5 provided on the base 2 for monitoring the lateral displacement of the bridge 1.

[0064] The limiting module 4 of this embodiment is used to limit the lateral displacement of the main beam 11 and / or at least partially restore the lateral position of the main beam 11. The limiting module 4 includes a rubber blocking block 41 provided on the base 2, and a first spring 42 and a second spring 43 that pass through the rubber blocking block 41 and are connected to the base 2. The stiffness of the first spring 42 is less than that of the second spring 43, and the other end of the first spring 42 is rotatably connected to the contact block 3.

[0065] The using method of the integrated device for limiting and monitoring the lateral creep of the bridge main beam in this embodiment specifically includes the following steps:

[0066] S1. Calculate the maximum lateral force under each load condition or combination of the target bridge;

[0067] Among them, the maximum lateral force of the bridge 1 under the normal use state is F1, and the maximum lateral force F2 under the ultimate bearing capacity state, and the conservative coefficients are γ1 and γ2 respectively;

[0068] S2. Determine the limit value of the lateral displacement of the target bridge;

[0069] Among them, the displacement limit value of the bridge 1 under the normal use state is D1, and the displacement limit value under the ultimate bearing capacity state is D2;

[0070] S3. Determine the lengths l and stiffnesses K of the first spring 42 and the second spring 43;

[0071] S4. Install the base 2, the contact block 3, the limiting module 4 and the monitoring module 5;

[0072] S5. Carry out limiting and monitoring on the lateral creep of the main beam 11 of the bridge 1.

[0073] Through the coordinated action of the limiting module 4 and the monitoring module 5, the integrated device of this embodiment can effectively limit and monitor the lateral displacement of the bridge main beam. And the limiting module 4 of this embodiment can achieve hierarchical limiting through springs with different stiffnesses and the rubber blocking block 41, which not only meets the requirements of the normal use state, but also provides stronger limiting ability under the ultimate state.

[0074] Embodiment 2:

[0075] The present embodiment provides an integrated device for limiting and monitoring the transverse creep of a bridge main beam, and the integrated device is transversely installed between the main beam 11 and the cap beam 12 of the bridge 1. The integrated device of the present embodiment specifically includes a base 2 arranged on the cap beam 12, a contact block 3 arranged on the main beam 11, a limiting module 4 arranged between the base 2 and the contact block 3, and a monitoring module 5 arranged on the base 2 for monitoring the transverse displacement of the bridge 1.

[0076] The difference from the first embodiment is that the base 2 of the present embodiment is mounted on the stopper 121 of the cap beam 12 by means of the fastener 6, and the fastener 6 is a self-tapping screw. The contact block 3 is fitted on the main beam web 111 of the main beam 11, so that the inclination angle α of the surface of the contact block 3 close to the bridge main beam 11 is consistent with the inclination angle of the main beam web 111.

[0077] The first spring 42 and the second spring 43 of this embodiment are coaxially arranged, and the inner diameter of the second spring 43 is larger than the outer diameter of the first spring 42. The length of the second spring 43 is smaller than the length of the first spring 42. When the lateral displacement of the bridge 1 is small, only the first spring 42 with small stiffness works, so as not to excessively increase the internal force level of the bridge main beam 11 itself during the limiting process; when the lateral displacement of the bridge 1 is large, the bridge main beam 11 is at risk of sliding off the support 13. Compared with limiting the internal force level of the bridge 1, limiting is more important. At this time, the first spring 42 with small stiffness and the second spring 43 with large stiffness work together, which greatly improves the lateral limiting capacity.

[0078] The first spring 42 of this embodiment is connected to the side of the contact block 3 facing away from the main beam 11 through a ball joint 44. Figures 7-8 As shown, the ball joint 44 includes a ball joint sphere 441 connected to the end of the first spring 42 and a ball joint housing 442 matched with the contact block 3. The rotation of the ball joint 44 can make the contact block 3 and the surface of the main beam 11 form a good contact.

[0079] Embodiment 3:

[0080] The present embodiment provides an integrated device for limiting and monitoring the transverse creep of a bridge main beam, and the integrated device is transversely installed between the main beam 11 and the cap beam 12 of the bridge 1. The integrated device of the present embodiment specifically includes a base 2 arranged on the cap beam 12, a contact block 3 arranged on the main beam 11, a limiting module 4 arranged between the base 2 and the contact block 3, and a monitoring module 5 arranged on the base 2 for monitoring the transverse displacement of the bridge 1.

[0081] The difference from Example 1 is that Figure 5As shown in the figure, the monitoring module 5 of this embodiment includes a laser displacement meter 51, a power supply 52 connected to the laser displacement meter 51, and a protective cover 53 covering the outside of the laser displacement meter 51 and the power supply 52. The power supply 52 is a mobile power supply. The protective cover 53 is made of a transparent material and will not block the laser emitted by the laser displacement meter 51. The height of the protective cover 53 is greater than the heights of the laser displacement meter 51 and the power supply 52, and less than the thickness of the rubber blocking block 41, making the rubber blocking block 41 a natural limit for protecting the monitoring module 5, and the lateral displacement of the bridge 1 will not affect the normal operation of the monitoring module 5.

[0082] Embodiment 4:

[0083] This embodiment provides an integrated device for limiting and monitoring the lateral creep of a bridge main girder. The integrated device is horizontally installed between the main girder 11 and the capping beam 12 of the bridge 1. The integrated device of this embodiment specifically includes a base 2 provided on the capping beam 12, a contact block 3 provided on the main girder 11, a limiting module 4 provided between the base 2 and the contact block 3, and a monitoring module 5 provided on the base 2 for monitoring the lateral displacement of the bridge 1.

[0084] The difference from Embodiment 3 is that a reflector 54 matching the laser displacement meter 51 is installed on the side of the contact block 3 facing away from the main girder 11 for reflecting the laser emitted by the laser displacement meter 51. The laser displacement meter 51 measures the distance by emitting a laser beam and receiving the reflected light, and the reflector 54 reflects the laser emitted by the laser displacement meter 51 back, enabling the laser displacement meter 51 to accurately calculate the lateral displacement between the main girder 11 and the capping beam 12, improving the measurement accuracy and signal strength. In addition, the reflector 54 is installed on the contact block 3 and moves synchronously with the main girder 11, eliminating the need for additional position adjustment, simplifying the installation process, and being able to adapt to complex external environments.

[0085] Embodiment 5:

[0086] This embodiment provides an integrated device for limiting and monitoring the lateral creep of a bridge main girder, specifically including a limiting module and a monitoring module. The limiting module includes a base 2, a contact block 3, self-tapping screws (i.e., fasteners 6), rubber blocking blocks 41, small-stiffness springs (i.e., first springs 42), large-stiffness springs (i.e., second springs 43), and spherical hinges 44, which are used to limit the lateral displacement of the main girder 11 and can restore or partially restore the lateral position of the bridge main girder 11. The monitoring module includes a laser displacement meter 51, a mobile power supply 52, a protective cover 53, and a wire 55, which monitors the lateral displacement of the main girder 11.

[0087] In this embodiment, this embodiment is installed between the bridge main girder 11 and the left and right stop blocks 121. The base 2 of this embodiment is fixed to the stop block 121 by self-tapping screws, and the contact block 3 is in contact with the surface of the main girder web 111 of the bridge main girder 11.

[0088] In this embodiment, the base 2 is fixed to the stop block 121 on the bridge capping beam 12 by self-tapping screws, the rubber blocking block 41 is fixed to the base 2, and the large-stiffness spring and the small-stiffness spring pass through the rubber blocking block 6 and are connected to the base 2. One side of the small-stiffness spring is connected to the contact block 3 through a spherical hinge 44, and the rotation of the spherical hinge 44 enables the other side of the contact block 3 to form good contact with the surface of the main girder 11.

[0089] In this embodiment, as Figure 3 shown, the laser displacement meter 51 and the mobile power supply 52 are fixed to the base 2, and the mobile power supply 52 supplies power to the laser displacement meter 51 through a wire 55. The protective cover 53 contains the laser displacement meter 51, the wire 55 and the mobile power supply 52 inside, preventing the laser displacement meter 51, the wire 55 and the mobile power supply 52 from being affected by the external environment such as rainwater.

[0090] In this embodiment, as Figure 1 and Figure 2 shown, the inner diameter of the large-stiffness spring is larger than the outer diameter of the small-stiffness spring, the length of the large-stiffness spring is smaller than the length of the small-stiffness spring, and the axes of the large-stiffness spring and the small-stiffness spring coincide and are both located at the center of the rubber blocking block 41.

[0091] In this embodiment, as Figure 4 shown, the spherical part of the spherical hinge 44 is connected to the end of the small-stiffness spring. As Figure 5 shown, the housing part of the spherical hinge 44 is embedded in the surface of the contact block 3 away from the bridge main girder 11.

[0092] In this embodiment, as Figure 5 shown, the inclination angle α of the surface of the contact block 3 close to the bridge main girder 11 is kept consistent with the inclination angle of the main girder web 111.

[0093] In this embodiment, as Figure 1 and Figure 3 shown, the height of the protective cover 53 is greater than the heights of the laser displacement meter 51 and the mobile power supply 52, and the height of the protective cover 53 is less than the thickness of the rubber blocking block 41. The protective cover 53 uses a transparent material and will not block the laser emitted by the laser displacement meter 51.

[0094] In this embodiment, a reflector 54 matching the laser displacement meter 51 can be installed on the surface of the contact block 3 away from the bridge main girder 11 for reflecting the laser emitted by the laser displacement meter 51.

[0095] The usage method of this embodiment is as Figure 9 shown, specifically including the following steps:

[0096] S1. Calculate the maximum lateral force under each load condition or combination of the target bridge.

[0097] According to the current relevant specifications for bridge engineering, calculate the maximum lateral force F1 under the normal service condition of Bridge 1 and the maximum lateral force F2 under the ultimate limit state of bearing capacity, and then multiply them by conservative coefficients γ1 and γ2 greater than 1 respectively as the design external loads of the device.

[0098] S2. Determine the limit value of the lateral displacement of the target bridge.

[0099] According to the design requirements of the specific bridge and the requirements of the operation and management department, determine the displacement limit value D1 under the normal service condition of Bridge 1 and the displacement limit value D2 under the ultimate limit state of bearing capacity.

[0100] S3. Determine the lengths l and stiffnesses K of the first spring 42 and the second spring 43 according to the following boundary conditions.

[0101]

[0102] Among them, the stiffness of the first spring 42 is K1 and the length is l1; the stiffness of the second spring 43 is K2 and the length is l2, satisfying K2>K1 and l2<l1.

[0103] Under the normal service condition of the bridge, that is, when the lateral force or lateral displacement of Bridge 1 is small, only the small-stiffness spring works, so as to ensure the limit function and not overly increase the internal force level of the main beam 11 of the bridge during the limiting process. Under the ultimate limit state of bearing capacity of Bridge 1, that is, when the lateral force or lateral displacement of Bridge 1 is large, there is a risk that the main beam 11 slides off the bearing 13, and the limit is more important, and the small-stiffness spring and the large-stiffness spring work together.

[0104] S4. Install the base 2, the contact block 3, the limit module 4 and the monitoring module 5.

[0105] Fix the device inside the bridge block 121 by using self-tapping screws. Make the contact block 3 closely fit with the outer surface of the main beam web 111 by rotating the spherical hinge 44, and then install the limit module 4 and the monitoring module 5.

[0106] S5. Monitor the lateral creep displacement value.

[0107] After the integrated device is installed, the monitoring module 5 starts to work. The protective cover 53 protects the laser displacement sensor 51, the wire 55 and the mobile power supply 52 from the influence of the environment such as rain. The mobile power supply 52 supplies power to the laser displacement sensor 51 through the wire 55. The laser displacement sensor 51 can be used to measure the lateral creep displacement value of the main beam 11 of the bridge in real time, analyze the statistical law of the measured data for further scientific research, and when the lateral displacement of the main beam 11 reaches the limit value, it can timely notify the maintenance department to carry out bridge maintenance.

[0108] Limit position under ultimate loads such as earthquakes

[0109] Under extreme loads such as earthquakes, the large-stiffness spring and the small-stiffness spring may fail. At this time, the rubber blocking block 41 plays a buffering role between the main beam 11 and the stop block 121, preventing "hard" contact between the main beam 11 and the stop block 121, and greatly reducing the probability of damage to the stop block 121.

[0110] S7. Replacement when the device life expires

[0111] After the device life expires, the self-tapping screw can be unscrewed to replace the old device, so as to install a new device. For the parameters of the new device, the stiffness of the large-stiffness spring and the small-stiffness spring can be optimized conversely according to the actual operation data of the bridge obtained through the tests in the foregoing steps, and a more suitable spring stiffness can be determined, so that the device can better serve the specific bridge.

[0112] The working principle of the integrated device of the present invention is as follows:

[0113] Under the normal use state of the bridge 1, the main beam 11 of the bridge undergoes lateral creep under external actions. When the lateral displacement is small, only the small-stiffness spring works, so as not to excessively increase the internal force level of the main beam 11 of the bridge itself during the limit position process; when the lateral displacement is large, there is a risk that the main beam 11 of the bridge slides off the bearing 13. Compared with restricting the internal force level of the main beam 11 of the bridge, the limit position is more important. At this time, the small-stiffness spring and the large-stiffness spring work together, greatly improving the lateral limit position ability. After the external action ends, the elastic force of the spring can restore or partially restore the lateral position of the main beam of the bridge. Under extreme loads such as earthquakes, the small-stiffness spring and the large-stiffness spring in the limit position device can play an energy dissipation role. If the extreme load is so large that the small-stiffness spring and the large-stiffness spring are crushed and fail, the rubber blocking block 41 will play a role of blocking and buffering, preventing the main beam 11 from squeezing and damaging the monitoring module 5, and also preventing hard contact between the main beam 11 and the stop block 121.

[0114] In addition, the monitoring module 5 of this embodiment can conduct long-term monitoring on the lateral displacement of the bridge 1. The long-term monitoring data obtained can be used for statistical law analysis to serve further scientific research. And when the lateral displacement of the main beam 11 reaches the limit value, the maintenance department of the bridge can be notified in time for bridge maintenance. The stiffness of the large-stiffness spring and the small-stiffness spring can also be optimized conversely according to the service condition of the specific bridge. After the device life expires, a more suitable spring stiffness can be determined according to the actual operation data of the bridge, so that the device can better serve the specific bridge.

[0115] The above description of the embodiments is provided to enable those of ordinary skill in the art to understand and use the invention. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative efforts. Therefore, the present invention is not limited to the above embodiments, and all improvements and modifications made by those skilled in the art without departing from the scope of the present invention according to the disclosure of the present invention should be within the protection scope of the present invention.

Claims

1. An integrated device for transverse climbing limit and monitoring of a bridge main girder, which is horizontally installed between the main girder (11) and the capping beam (12) of the bridge (1), and is characterized in that, The integrated device includes: A base (2) provided on the capping beam (12); A contact block (3) provided on the main beam (11); A limiting module (4) provided between the base (2) and the contact block (3) for restricting the lateral displacement of the main beam (11) and / or at least partially restoring the lateral position of the main beam (11); A monitoring module (5) provided on the base (2) for monitoring the lateral displacement of the bridge (1); Wherein, the limiting module (4) includes a rubber blocking block (41) provided on the base (2), and a first spring (42) and a second spring (43) that pass through the rubber blocking block (41) and are connected to the base (2); the stiffness of the first spring (42) is less than that of the second spring (43), and the other end of the first spring (42) is rotatably connected to the contact block (3).

2. The integrated device for transverse creep limit and monitoring of a bridge main girder according to claim 1, characterized in that, The base (2) is installed on the stop block (121) of the capping beam (12) through a fastener (6); The contact block (3) is fitted and installed on the main beam web (111) of the main beam (11).

3. The integrated device for transverse climbing limit and monitoring of a bridge main girder according to claim 1, characterized in that, The first spring (42) and the second spring (43) are coaxially arranged, and the inner diameter of the second spring (43) is greater than the outer diameter of the first spring (42).

4. An integrated device for lateral creep limit and monitoring of a bridge main girder according to claim 1, characterized in that, The length of the second spring (43) is less than the length of the first spring (42).

5. The integrated device for transverse climbing limit and monitoring of a bridge main girder according to claim 1, characterized in that, The first spring (42) is connected to the side of the contact block (3) facing away from the main beam (11) through a spherical hinge (44); The spherical hinge (44) includes a spherical hinge sphere (441) connected to the end of the first spring (42) and a spherical hinge housing (442) fitted and provided on the contact block (3).

6. The integrated device for transverse climbing limit and monitoring of a bridge main girder according to claim 1, characterized in that, The monitoring module (5) includes a laser displacement sensor (51), a power supply (52) connected to the laser displacement sensor (51), and a protective cover (53) covering the outside of the laser displacement sensor (51) and the power supply (52).

7. An integrated device for transverse creep limit and monitoring of a bridge main girder according to claim 6, characterized in that, The protective cover (53) is made of a transparent material, and the height of the protective cover (53) is less than the thickness of the rubber blocking block (41).

8. An integrated device for lateral climbing limit and monitoring of a bridge main girder according to claim 6, characterized in that, A reflecting mirror (54) matching the laser displacement sensor (51) is installed on the side of the contact block (3) facing away from the main beam (11).

9. A method for using the integrated device for transverse creep limit and monitoring of a bridge main girder according to any one of claims 1-8, characterized in that, It includes the following steps: S1. Calculate the maximum lateral force under each load condition or combination of the target bridge; Wherein, the maximum lateral force in the normal service state of the bridge is F1, and the maximum lateral force F2 in the ultimate limit state of bearing capacity, and the conservative coefficients are γ1 and γ2 respectively; S2. Determine the limit value of the lateral displacement of the target bridge; Wherein, the displacement limit value in the normal service state of the bridge is D1, and the displacement limit value in the ultimate limit state of bearing capacity is D2; S3. Determine the lengths l and stiffnesses K of the first spring (42) and the second spring (43); S4. Install the base (2), the contact block (3), the limiting module (4) and the monitoring module (5); S5. Carry out lateral creep limit and monitoring on the main beam (11) of the bridge (1).

10. The method for using the integrated device for lateral creep limit and monitoring of bridge main girders according to claim 9, characterized in that In step S3, the lengths l and stiffnesses K of the first spring (42) and the second spring (43) are determined according to the following boundary conditions: Wherein, the stiffness of the first spring (42) is K1 and the length is l1; the stiffness of the second spring (43) is K2 and the length is l2, satisfying K2 > K1 and l2 < l1.

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