High-pier bridge limiting system and bridge with same

Abstract

The utility model discloses a high-pier bridge limiting system and a bridge with the same. The high-pier bridge limiting system comprises a first mounting seat, a second mounting seat, a third mounting seat and a fourth mounting seat, wherein the first mounting seat is arranged on the side surface of the top of a pier; the second mounting seat is arranged at the beam bottom of the end part of the cover beam; the temperature sensing pressure self-balancing mechanism is arranged between the first mounting seat and the second mounting seat, the temperature sensing pressure self-balancing mechanism is provided with a movable gap which can be adjusted in the longitudinal direction of the bridge, and the movable gap is used for limiting the displacement amplitude of the pier top of the bridge pier in the longitudinal direction of the bridge. The high pier bridge limiting system has the advantages that adjustment, detection and early warning are integrated, limiting, monitoring, debugging and early warning can be carried out in a unified mode, installation constructors do not need to adjust one by one on site, the labor intensity is greatly reduced, the installation efficiency is improved, and in the daily maintenance process, the maintenance efficiency is greatly improved. And daily maintenance can be completed without checking the connecting parts of the bridge one by one, so that the maintenance difficulty is greatly reduced, and the automation degree is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of bridge engineering, and particularly relates to a high-pier bridge limiting system and a bridge with the same. BACKGROUND

[0002] The high-pier bridge refers to a bridge with a high pier, which is usually used to cross complex terrains such as deep valleys, large rivers and lakes. The bridge has the advantages of strong crossing capacity, large bearing capacity, good structural stability and convenient construction. The pier height of the high-pier bridge is usually greater than 20 m. Due to the low longitudinal stiffness of the pier column, when the beam bottom and the support surface are not horizontal, the unbalanced horizontal thrust will be generated at the top of the pier because of the load bias, automobile braking force and temperature difference effect, which will cause the longitudinal displacement of the pier top. The displacement of the pier top caused by the nonlinear effect is difficult to estimate, and if no control measures are taken, the displacement of the pier top will exceed the limit, which will cause the support position to deviate or the relative sliding of the upper and lower steel plates of the pot-type sliding support to be too large, resulting in damage to the support and expansion joint. In addition, the excessive displacement of the high-pier pier top will also increase the P-Δ effect, further accelerate the increase of the relative displacement between the pier top and the end of the main beam, and bring a series of adverse factors such as the increase of the pier bottom bending moment, the decrease of the bearing capacity of the bridge pier, the decrease of the durability and safety of the bridge structure, and the influence on the normal use performance. These problems have occurred in many bridges in China. If no measures are taken, the bridge joint will become larger, the displacement of the pier top will exceed the limit, and a series of problems such as damage to the support due to sliding, excessive expansion joint and other problems will occur. The problem is serious, which will cause the bridge pier to tilt, the bearing capacity to decrease seriously, and the normal use to be affected.

[0003] Bridge longitudinal limiter is used in many bridges in recent years, which can be roughly divided into cable limiter, block limiter and other types of limiters including spring limiter. For example, a kind of elastic bridge support for limiting pull rope (application number 201721240708.X) is provided in the patent, which indicates that the upper support mounting plate and the lower support mounting plate swing under the support of the double spherical inlay, when the swing amplitude increases and the rope is tensioned, the strong spring is pulled by the rope, the relative swing of the upper support mounting plate and the lower support mounting plate is blocked by the elasticity of the strong spring, and the structure stability is improved. For another example, a kind of elastic limiter for bridge deviation correction and bridge with automatic deviation correction function (application number 201820659989.0) is provided in the patent, when the bridge girder is affected by the deviation force, the strong spring buffers the deviation force of the bridge girder, so that the bridge girder is not easy to displace, if displacement occurs, the strong spring will pull the bridge girder back in the future vibration and bump, when it is necessary to adjust the tension of the strong spring, the handle is rotated, since the control rod is threadedly engaged with the movable rod, and the movable rod is limited in rotation by the limiting piece, the position of the movable rod is moved by rotating the handle, so as to adjust the tension of the strong spring. Although the above limiters can limit the bridge to a certain extent, they are basically based on the purpose of shock absorption, and are not aimed at the case that the relative displacement between the pier top and the main girder is too large due to long-term nonlinear effect. The mechanism of the relative displacement between the pier and the main girder caused by long-term nonlinear effect is completely different from that during earthquake. In actual engineering, the pier top displacement is mainly caused by the cumulative effect of temperature effect cycle, braking force and large longitudinal slope. However, the above limiters cannot well solve the problem of excessive relative displacement between the pier and the main girder caused by long-term nonlinear effect, and cannot provide early warning when the relative displacement between the pier and the main girder exceeds the limit. Moreover, special maintenance personnel are needed to check and maintain the bridge regularly during daily maintenance, which increases the difficulty of daily maintenance of the bridge. Practical new type content

[0004] In view of the above-mentioned defects of the prior art, the purpose of the present application is to provide a high pier bridge limiting system and a bridge with the system, which can solve the problems of excessive relative displacement between the pier and the main girder caused by long-term nonlinear effect, convenient maintenance and repair, and timely early warning.

[0005] To solve the above problems, the technical scheme adopted by the present application is:

[0006] The high pier bridge limiting system comprises:

[0007] A first mounting seat arranged on the side surface of the pier top;

[0008] a second mounting base arranged at the bottom of the end beam of the bent cap; and

[0009] a temperature-pressure self-balancing mechanism arranged between the first mounting base and the second mounting base, the temperature-pressure self-balancing mechanism having an adjustable gap in the longitudinal direction of the bridge, the gap being used to limit the displacement amplitude of the pier top in the longitudinal direction of the bridge.

[0010] As a preferred embodiment of the present application, the high-pier bridge limiting system further comprises:

[0011] a temperature detector for detecting the ambient temperature and sending temperature data to the control mechanism;

[0012] a displacement sensor arranged on the temperature-pressure self-balancing mechanism, the displacement sensor being used to detect the longitudinal width of the gap of the temperature-pressure self-balancing mechanism and send the longitudinal width data to the control mechanism; and / or

[0013] a control mechanism arranged on the pier top, the control mechanism being connected to the temperature detector, the displacement sensor, and the temperature-pressure self-balancing mechanism, and being used to receive the temperature data sent by the temperature detector and the longitudinal width data sent by the displacement sensor, and control the action and state of the temperature-pressure self-balancing mechanism according to the temperature data and the longitudinal width data.

[0014] As a preferred embodiment of the present application, the temperature-pressure self-balancing mechanism comprises a horizontal connecting rod, an inner limiting plate and an outer limiting plate arranged on the horizontal connecting rod and opposite to each other in the longitudinal direction of the bridge, one end of the horizontal connecting rod being connected to the first mounting base, and the other end of the horizontal connecting rod being connected to the outer limiting plate through the second mounting base and the inner limiting plate in sequence; an elastic spacing adjusting mechanism is arranged between the inner limiting plate and the first mounting base, the elastic spacing adjusting mechanism being connected to the control mechanism, and the control mechanism adjusting the longitudinal spacing between the inner limiting plate and the outer limiting plate through the elastic spacing adjusting mechanism to limit the displacement amplitude of the pier top in the longitudinal direction of the bridge.

[0015] As a preferred embodiment of the present application, the first mounting base, the second mounting base, the inner limiting plate, and the outer limiting plate are all steel members.

[0016] As a preferred embodiment of the present application, the elastic spacing adjustment mechanism comprises a first driving device, a second driving device, and a main elastic buffer assembly, the first driving device is mounted on the first mounting base, the second driving device is mounted on the second mounting base, the first driving device and the second driving device are connected to the inner limiting plate and the outer limiting plate through the corresponding main elastic buffer assembly, the first driving device drives the inner limiting plate to move along the longitudinal direction of the bridge to adjust the longitudinal width of the first gap between the inner limiting plate and the second mounting base, and the second driving device drives the outer limiting plate to move along the longitudinal direction of the bridge to adjust the longitudinal width of the second gap between the outer limiting plate and the second mounting base; the first driving device and the second driving device are connected to the control mechanism.

[0017] As a preferred embodiment of the present application, the main elastic buffer assembly comprises two push plates arranged oppositely and a plurality of first springs arranged between the two push plates, one of the push plates is connected to the first driving device or the second driving device, and the other push plate is connected to the inner limiting plate or the outer limiting plate.

[0018] As a preferred embodiment of the present application, the temperature and pressure self-balancing mechanism further comprises an auxiliary elastic buffer assembly, the auxiliary elastic buffer assembly is a second spring coaxially sleeved on the horizontal connecting rod, one end of the second spring is connected to the first mounting base, and the other end of the second spring is connected to the inner limiting plate or the outer limiting plate.

[0019] As a preferred embodiment of the present application, the first mounting base comprises a channel steel and an angle steel arranged on the upper part of the channel steel, the channel steel is vertically mounted on the side surface of the pier top, the side of the channel steel away from the second mounting base is fixedly mounted with the angle steel, and the bottom surface of the angle steel is crimped to the surface of the pier top; the side of the channel steel away from the angle steel is fixedly mounted with a mounting plate, and the horizontal connecting rod is mounted on the part of the channel steel exceeding the surface of the pier top.

[0020] As a preferred embodiment of the present application, the second mounting base comprises a pressure bearing plate and a connecting plate, the pressure bearing plate is fixedly mounted on the beam bottom of the end part of the bent cap, and the connecting plate is sleeved on the horizontal connecting rod between the inner limiting plate and the outer limiting plate and is parallel to the inner limiting plate and the outer limiting plate.

[0021] As a preferred embodiment of the present application, the pressure bearing plate and the connecting plate are perpendicular to each other.

[0022] As a preferred embodiment of the present application, a stiffening plate is connected between the connecting plate and the pressure bearing plate.

[0023] As a preferred embodiment of the present application, the pressure bearing plate, the connecting plate, and the stiffening plate are perpendicular to each other in pairs.

[0024] As a preferred embodiment of the present application, a stiffening rib is arranged between the connecting plate and the stiffening plate.

[0025] As preferred in the present application, a monitoring terminal device is further included, which is wirelessly connected with the control mechanism through a wireless transceiver, and is configured to receive monitoring data sent by the control mechanism.

[0026] As preferred in the present application, the temperature detector is arranged on the inner limiting plate and / or the outer limiting plate. The temperature detector can detect the temperature of the inner limiting plate and the outer limiting plate, and then flexibly adjust the width of the first gap and the second gap to limit the maximum displacement amplitude of the pier top.

[0027] The utility model also provides a bridge with high pier bridge limiting system, its characterized in be, including high pier bridge limiting system of the.

[0028] The utility model also provides a high pier bridge limiting control method, its characterized in, including the following steps:

[0029] The high pier bridge limiting system is installed between the pier top and the bent cap, and a first gap is reserved between the inner limiting plate of the high pier bridge limiting system and the second mounting seat, and a second gap is reserved between the outer limiting plate and the second mounting seat during installation.

[0030] The temperature detector detects the ambient temperature and transmits the temperature data to the control mechanism.

[0031] The control mechanism controls the first driving device and / or the second driving device to act to adjust the longitudinal width of the first gap and the second gap according to the temperature region where the received temperature data is located.

[0032] The longitudinal width data of the first gap and the second gap are obtained by using the displacement sensor, and the obtained longitudinal width data are transmitted to the control mechanism.

[0033] The control mechanism compares the received longitudinal width data with the preset longitudinal width threshold value of the first gap and the second gap, and if the longitudinal width threshold value is exceeded, the control mechanism sends position information and warning information to the monitoring terminal device.

[0034] As preferred in the present application, the first gap and the second gap constitute the temperature-sensitive pressure self-balancing mechanism with an adjustable gap in the longitudinal direction of the bridge, and the longitudinal width of the gap (i.e. the sum of the longitudinal width of the first gap d1 and the longitudinal width of the second gap d2) is not less than the longitudinal expansion amount d of the expansion joint between the adjacent two bent caps, and the difference between the longitudinal width of the gap and the longitudinal expansion amount d of the expansion joint is not more than 1 cm.

[0035] As preferred in the present application, the longitudinal width of the first gap d1 is greater than the longitudinal width of the second gap d2 at -5℃~10℃; the longitudinal width of the first gap d1 is less than or equal to the longitudinal width of the second gap d2 at 10℃~30℃.

[0036] Compared with the prior art, the present application has the following beneficial effects:

[0037] (1) The structure deforms under the action of horizontal force, and the additional effect caused by the horizontal deformation of the gravity load is caused. The greater the absolute value of the horizontal lateral displacement of the bridge, the more obvious the P-Δ effect. If the horizontal deformation of the bridge is too large, the structure may be unstable due to the second-order effect of gravity. The displacement amplitude of the pier top is limited by the temperature-sensitive pressure self-balancing mechanism, the displacement of the pier top is reduced, and the P-Δ effect is significantly reduced, thereby effectively reducing the adverse stress condition of the pier caused by the P-Δ effect from the source.

[0038] (2) The movable gap reserved between the steel plates of the high-pier bridge limiting system can be adjusted according to the ambient temperature. The displacement amplitude of the pier top is limited by limiting the size of the movable gap. When the displacement of the pier top is within the allowable range of the specification, i.e. the displacement of the pier top does not exceed the limit, it does not affect the stress of the structure and the normal use of the bridge. After the displacement of the pier top exceeds the limit, the movable gap reserved by the high-pier bridge limiting system does not play a role. When the pier top has a large displacement, the inner limiting plate or the outer limiting plate is pressed by the second mounting seat, and the high-pier bridge limiting system starts to work. The inner limiting plate or the outer limiting plate is displaced, so that the movable gap is compressed, and then the deformation of the elastic buffer assembly of the elastic spacing adjusting mechanism is used to reduce and limit the excessive displacement. It can not only play a flexible buffering role, but also reduce and limit the cumulative effect, effectively avoid the damage of the support and even the collapse of the main beam caused by the excessive displacement, reduce the difficulty of bridge maintenance, and prevent the displacement of the pier top from being too large to cause the pier to be stressed.

[0039] (3) The utility model discloses a simple longitudinal limiting by converting the multi-dimensional and complex space limiting, which can reduce the detection difficulty of the detection mechanism, improve the accuracy of the detection result and reduce the energy consumption.

[0040] (4) The high-pier bridge limiting system has a warning function, which can send a warning information when the pier top has a large displacement, and remind the bridge maintenance personnel to maintain the overloaded high-pier bridge limiting system.

[0041] (5) The high-pier bridge limiting system of the utility model integrates adjustment, detection and early warning, can uniformly limit, monitor, debug and early warn, does not need to be adjusted on site by installation constructors one by one, greatly reduces labor intensity, improves installation efficiency, in the daily maintenance process, the connecting parts of the bridge also do not need to be checked one by one, can complete daily maintenance, greatly reduces maintenance difficulty and improves automation degree. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is the high-pier bridge limiting regulation and control method flow chart of the application.

[0043] Figure 2 It is the structure schematic diagram of the high-pier bridge limiting system in an embodiment of the application.

[0044] Figure 3 It is the structure schematic diagram of the high-pier bridge limiting system in another embodiment of the application.

[0045] Figure 4 It is the installation schematic diagram of the high-pier bridge limiting system in an embodiment of the application.

[0046] Figure 5 It is the enlarged view of E of Figure 4

[0047] Figure 6 It is the A-A sectional view of Figure 5

[0048] Figure 7 It is the B-B sectional view of Figure 5

[0049] Figure 8 It is the C-C sectional view of Figure 5

[0050] Figure 9 It is the structure schematic diagram of the high-pier bridge limiting system in the third embodiment of the application.

[0051] Figure 10 It is the partial enlarged view of Figure 9

[0052] Figure 11 It is the installation schematic diagram of the high-pier bridge limiting system in the fourth embodiment of the application.

[0053] IN THE BRIEF DESCRIPTION OF DRAWINGS: 1 - first mounting seat;11 - channel steel;12 - angle steel;121 - reinforcing plate;13 - chemical anchor bolt;14 - mounting plate;

[0054] 2 - second mounting seat;21 - pressure bearing plate;22 - connecting plate;23 - stiffening plate;24 - stiffening rib; ​​​​​

[0055] 3-temperature sensing pressure self-balancing mechanism; 31-horizontal connecting rod; 32-inner limiting plate; 33-outer limiting plate; 34-elastic spacing adjusting mechanism; 341-first driving device; 342-second driving device; 343-main elastic buffering assembly; 3431-push plate; 3432-first spring; 35- auxiliary elastic buffering assembly; 36-limiting block;

[0056] 4-temperature detector;

[0057] 5-displacement sensor;

[0058] 6-monitoring terminal device;

[0059] 7-pier top;

[0060] 8-bent cap; 81-support;

[0061] 9-control mechanism. DETAILED DESCRIPTION

[0062] The above embodiments of the present application will be described in detail by specific examples. Other advantages and effects of the present application will be easily understood by those skilled in the art from the above description. The present application can also be implemented or applied by other different embodiments, and the details in the specification can be modified or changed based on different views and applications without departing from the spirit of the present application.

[0063] It should be noted that the process equipment or device not specifically mentioned in the following examples is the conventional equipment or device in the art.

[0064] It should be understood that the one or more method steps mentioned in the present application do not exclude that other method steps can exist before and after the mentioned combination steps or other method steps can be inserted between the mentioned steps, unless otherwise specified. It should also be understood that the combination connection relationship between the one or more devices mentioned in the present application does not exclude that other devices can exist before and after the mentioned combination devices or other devices can be inserted between the two mentioned devices, unless otherwise specified. Moreover, unless otherwise specified, the numbering of each method step is only a convenient tool to identify each method step, and is not intended to limit the arrangement order of each method step or to limit the scope of the present application. The change or adjustment of the relative relationship without substantial change of the technical content is also considered as the scope of the present application.

[0065] Embodiments of the present application are described below in detail with reference to the accompanying drawings, wherein the same or similar components or components having the same or similar functions are denoted by the same or similar reference numerals throughout the drawings. The embodiments described below by reference to the drawings are exemplary and are for the purpose of explaining the present application only and are not to be understood as limiting the present application.

[0066] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "axial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the features defined as "first", "second" can be explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0067] In the description of the present application, it needs to be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0068] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0069] The present application is further described below in conjunction with specific embodiments, but the protection scope of the present application is not limited thereto.

[0070] The utility model discloses a high pier bridge limiting system, it includes:

[0071] The first mounting seat 1 is arranged on the side surface of the pier top 7.

[0072] The second mounting seat 2 is arranged on the beam bottom of the bent cap 8 end part.

[0073] The temperature-sensitive pressure self-balancing mechanism 3 is arranged between the first mounting base 1 and the second mounting base 2, and has an adjustable gap in the longitudinal direction of the bridge, which is used for detecting the longitudinal displacement of the pier top 7 and adjusting the displacement amplitude of the pier top 7 in the longitudinal direction of the bridge.

[0074] The high-pier bridge limiting system also comprises:

[0075] The temperature detector 4 is used for detecting the ambient temperature and sending the temperature data to the control mechanism 9.

[0076] The displacement sensor 5 is arranged on the temperature-sensitive pressure self-balancing mechanism 3, and is used for detecting the longitudinal width of the gap of the temperature-sensitive pressure self-balancing mechanism 3 and sending the longitudinal width data to the control mechanism 9.

[0077] The control mechanism 9 is arranged on the pier top 7, and is connected with the temperature detector 4, the displacement sensor 5 and the temperature-sensitive pressure self-balancing mechanism 3, and is used for receiving the temperature data sent by the temperature detector 4 and the longitudinal width data sent by the displacement sensor 5, and controlling the action and state of the temperature-sensitive pressure self-balancing mechanism 3 according to the temperature data and the longitudinal width data.

[0078] In some embodiments of the utility model, the temperature-sensitive pressure self-balancing mechanism 3 includes a horizontal connecting rod 31, an inner limiting plate 32 and an outer limiting plate 33 which are arranged on the horizontal connecting rod 31 and are oppositely arranged along the longitudinal direction of the bridge, one end of the horizontal connecting rod 31 is connected with the first mounting base 1, and the other end is sequentially connected with the second mounting base 2 and the outer limiting plate 33 through the inner limiting plate 32, an elastic spacing adjusting mechanism 34 is arranged between the inner limiting plate 32 and the first mounting base 1, the elastic spacing adjusting mechanism 34 is connected with the control mechanism 9, and the control mechanism 9 adjusts the longitudinal spacing between the inner limiting plate 32 and the outer limiting plate 33 through the elastic spacing adjusting mechanism 34 to limit the displacement amplitude of the pier top 7 in the longitudinal direction of the bridge.

[0079] In some embodiments of the utility model, the elastic spacing adjustment mechanism 34 includes first drive equipment 341, second drive equipment 342 and main elastic buffer assembly 343, first drive equipment 341 is installed on first mounting seat 1, second drive equipment 342 is installed on second mounting seat 2, first drive equipment 341, second drive equipment 342 are connected with the inner limiting plate 32, the outer limiting plate 33 through the main elastic buffer assembly 343 of corresponding respectively, first drive equipment 341 drives the inner limiting plate 32 and moves along the bridge longitudinal direction to adjust the longitudinal width of the first gap between the inner limiting plate 32 and second mounting seat 2, and second drive equipment 342 drives the outer limiting plate 33 and moves along the bridge longitudinal direction to adjust the longitudinal width of the second gap between the outer limiting plate 33 and second mounting seat 2, first drive equipment 341, second drive equipment 342 are connected with control mechanism 9.

[0080] In some embodiments of the utility model, the main elastic buffer assembly 343 includes two push plates 3431 arranged oppositely and a plurality of first springs 3432 arranged between the two push plates, one of the push plates is connected with the first drive equipment 341 or the second drive equipment 342, and the other push plate is connected with the inner limiting plate 32 or the outer limiting plate 33. The first springs are welded between the two push plates to ensure that the springs can work together. The working load of the first springs in the working state is about 50kN-100kN, the ultimate load is about 200kN, the free length should not be too long and should be about 8cm-12cm, and the stiffness of the first springs should be large to ensure that the spring deformation is small in the working state and can play a limiting role. The stiffness of the springs working together should be such that the spring deformation under the ultimate load does not exceed 20% of the total length of the spring, i.e. about 6kN / mm-12kN / mm.

[0081] In some embodiments of the utility model, the temperature and pressure self-balancing mechanism 3 further includes an auxiliary elastic buffer assembly 35, the auxiliary elastic buffer assembly 35 is a second spring coaxially sleeved on the horizontal connecting rod 31, one end of the second spring is connected with the first mounting seat 1, and the other end is connected with the inner limiting plate 32 or the outer limiting plate 33. The working load of the second spring in the working state is about 50kN-100kN, the ultimate load is about 200kN, the free length should not be too long and should be about 8cm-12cm, and the stiffness of the second spring should be large to ensure that the spring deformation is small in the working state and can play a limiting role. The stiffness of the spring should be such that the spring deformation under the ultimate load does not exceed 20% of the total length of the spring, i.e. about 6kN / mm-12kN / mm.

[0082] In some embodiments of the utility model, first mount 1 including channel steel 11 and setting on channel steel upper angle steel 12, channel steel 11 is installed on the side of bridge pier top 7 vertically, the side of channel steel 11 away from second mount 2 is fixedly installed with angle steel 12, the bottom surface of angle steel 12 is crimped on the surface of bridge pier top 7, the side of channel steel 11 away from angle steel 12 is fixedly installed with mounting plate 14, and horizontal connecting rod 31 is installed on the part of channel steel 11 beyond the surface of bridge pier top 7.

[0083] In some embodiments of the utility model, the bent cap 8 is installed on the bridge pier top 7 through the support 81.

[0084] In some embodiments of the utility model, the channel steel 11 is fixedly installed on the side of the bridge pier top 7 away from the second mount 2 through a plurality of chemical anchors 13. When planting chemical anchors, attention should be paid to avoiding the original steel bars of the member.

[0085] In some embodiments of the utility model, a plurality of reinforcing plates 121 are arranged on the angle steel 12, the reinforcing plates 121 are perpendicular to the angle steel 12, and can play a supporting role.

[0086] In some embodiments of the utility model, the second mount 2 includes a pressure bearing plate 21 and a connecting plate 22, the pressure bearing plate 21 is fixedly installed on the end beam bottom of the bent cap 8, the connecting plate 22 is sleeved on the horizontal connecting rod 31 between the inner limiting plate 32 and the outer limiting plate 33 and is parallel to the inner limiting plate 32 and the outer limiting plate 33.

[0087] In some embodiments of the utility model, the pressure bearing plate 21 is fixedly installed on the end beam bottom of the bent cap 8 through a plurality of chemical anchors 13.

[0088] In some embodiments of the utility model, the pressure bearing plate 21 and the connecting plate 22 are perpendicular to each other.

[0089] In some embodiments of the utility model, the connecting plate 22 is connected with the pressure bearing plate 21 through a stiffening plate 23.

[0090] In some embodiments of the utility model, the pressure bearing plate 21, the connecting plate 22 and the stiffening plate 23 are perpendicular to each other in pairs.

[0091] In some embodiments of the utility model, a stiffening rib 24 is welded between the connecting plate 22 and the stiffening plate 23. The stiffening rib 24 can play a stable supporting role.

[0092] In some embodiments of the utility model, the displacement sensor 5 is arranged on the inner limiting plate 32 and / or the outer limiting plate 33 and is connected with the control mechanism 9, and is used for detecting the longitudinal width of the first gap and / or the second gap.

[0093] In some embodiments of the utility model, the high pier bridge limiting system further comprises a monitoring terminal device 6, the monitoring terminal device 6 is connected with the control mechanism 9 through wireless transceiver and wireless signal, and is used for receiving the monitoring data sent by the control mechanism 9.

[0094] In some embodiments of the utility model, the temperature and pressure self-balancing mechanism 3 is further provided with a limiting block 36. When the high pier bridge limiting system is early warned, the limiting block 36 can prevent the inner limiting plate from being continuously compressed.

[0095] The utility model further provides a bridge with high pier bridge limiting system, including high pier bridge limiting system described.

[0096] The utility model further provides a kind of high pier bridge limiting control method, comprising the following steps:

[0097] S1 high pier bridge limiting system is installed between pier top 7 and the end beam bottom of bent cap 8, when installation, first gap is reserved between the inner limiting plate 32 of high pier bridge limiting system and second mounting seat 2, second gap is reserved between outer limiting plate 33 and second mounting seat 2;

[0098] S2 temperature detector 4 detects the temperature of high pier bridge limiting system, and temperature data is transmitted to control mechanism 9;

[0099] S3 control mechanism 9 according to the temperature region where received temperature data is located, control first drive equipment 341 and / or second drive equipment 342 act to adjust the size of first gap, second gap;

[0100] S4 the longitudinal width of first gap and second gap is obtained using displacement sensor 5, and the distance data obtained is transmitted to control mechanism 9;

[0101] S5 control mechanism 9 compares received distance data with the safety distance threshold value of first gap and second gap, and if exceeding safety displacement threshold value, control mechanism 9 sends position information and early warning information to monitoring terminal device 6.

[0102] In some embodiments of the utility model, the first gap, the second gap constitute the temperature and pressure self -balancing mechanism has adjustable movable gap in the bridge longitudinal direction, movable gap can guarantee that the high pier bridge limiting system does not work when the pier top does not have too much displacement;The longitudinal width of movable gap (i.e. the sum of the longitudinal width of the first gap d1 and the longitudinal width of the second gap d2) is not less than the longitudinal expansion amount of the expansion joint between the adjacent two bent caps 8, and the difference between the longitudinal width of movable gap and the longitudinal expansion amount of the expansion joint is not more than 1cm.

[0103] In some embodiments of the utility model, the longitudinal width of the first gap d1 is greater than the longitudinal width of the second gap d2 when the temperature is-5℃~10℃;When the temperature is 10℃~30℃, the longitudinal width of the first gap d1 is less than the longitudinal width of the second gap d2.

[0104] Specifically, the inner limiting plate and the outer limiting plate are 80-shaped steel and 160-shaped steel, and the preferred values of the first gap d1 and the second gap d2 under different environmental temperatures are shown in Table 1.

[0105] Table 1

[0106]

[0107] Taking a 25m span as an example, the pier top displacement limit value is 2.5cm, and the size of the first gap d1 and the second gap d2 is adjusted according to the temperature, when the first gap d1 and the second gap d2 exceed the limit, the elastic buffer assembly in the elastic spacing adjusting mechanism intervenes in work, reduces and limits the excessive displacement by the deformation of the spring in the elastic buffer assembly, reduces and limits the accumulated effect, and the background warning is given when d1 and d2 reach 2.5cm. The conventional bridge displacement limit value is 1.5~1.8cm, and after introducing the system, the bearing 81 replacement period almost does not have alarm.

[0108] The above examples are intended to be illustrative and not exclusive. Various modifications and variations are possible in light of the above teachings without departing from the scope and spirit of the application. While the application has been described in connection with specific preferred embodiments, it should be understood that it can be carried out by alternative methods within the scope of the application. Accordingly, various modifications and changes can be made to the application without departing from the scope and spirit of the application.

Claims

1. A high pier bridge limiting system, characterized in that, include: The first mounting seat (1) is installed on the side of the top (7) of the bridge pier. The second mounting base (2) is installed at the bottom of the end beam of the cap beam (8); and A temperature-sensing pressure self-balancing mechanism (3) is provided between the first mounting base (1) and the second mounting base (2). The temperature-sensing pressure self-balancing mechanism (3) has an adjustable clearance in the longitudinal direction of the bridge. The adjustable clearance is used to limit the displacement amplitude of the pier top (7) in the longitudinal direction of the bridge.

2. The high-pier bridge limiting system according to claim 1, wherein Also includes: Temperature detector (4) is used to detect ambient temperature and send temperature data to control mechanism (9); A displacement sensor (5) is installed on the temperature- and pressure-sensing self-balancing mechanism (3). The displacement sensor (5) is used to detect the longitudinal width of the moving gap of the temperature- and pressure-sensing self-balancing mechanism (3) and send the longitudinal width data to the control mechanism (9); and / or The control mechanism (9) is installed on the top (7) of the bridge pier. The control mechanism (9) is connected to the temperature detector (4), the displacement sensor (5), and the temperature and pressure self-balancing mechanism (3). It is used to receive the temperature data sent by the temperature detector (4) and the longitudinal width data sent by the displacement sensor (5), and to control the action and state of the temperature and pressure self-balancing mechanism (3) according to the temperature data and the longitudinal width data.

3. The high-pier bridge limiting system according to claim 1, wherein: The temperature-sensing pressure self-balancing mechanism (3) includes a horizontal connecting rod (31), an inner limiting plate (32) and an outer limiting plate (33) arranged on the horizontal connecting rod (31) and opposite to each other along the longitudinal direction of the bridge. One end of the horizontal connecting rod (31) is connected to the first mounting seat (1), and the other end passes through the inner limiting plate (32), the second mounting seat (2) and the outer limiting plate (33) in sequence. An elastic spacing adjustment mechanism (34) is provided between the inner limiting plate (32) and the first mounting seat (1). The elastic spacing adjustment mechanism (34) is connected to the control mechanism (9). The control mechanism (9) adjusts the longitudinal spacing between the inner limiting plate (32) and the outer limiting plate (33) through the elastic spacing adjustment mechanism (34) to limit the displacement amplitude of the pier top (7) in the longitudinal direction of the bridge.

4. The high-pier bridge limiting system according to claim 3, characterized in that: The elastic spacing adjusting mechanism (34) comprises a first driving device (341), a second driving device (342) and a main elastic buffer assembly (343), the first driving device (341) is installed on the first mounting base (1), the second driving device (342) is installed on the second mounting base (2), the first driving device (341) and the second driving device (342) are connected with the inner limiting plate (32) and the outer limiting plate (33) through the main elastic buffer assembly (343), the first driving device (341) drives the inner limiting plate (32) to move along the longitudinal direction of the bridge to adjust the longitudinal width of the first gap between the inner limiting plate (32) and the second mounting base (2), and the second driving device (342) drives the outer limiting plate (33) to move along the longitudinal direction of the bridge to adjust the longitudinal width of the second gap between the outer limiting plate (33) and the second mounting base (2); the first driving device (341) and the second driving device (342) are connected with the control mechanism (9).

5. The high pier bridge limiting system according to claim 4, wherein: The main elastic buffer assembly (343) comprises two push plates (3431) arranged oppositely and a plurality of first springs (3432) arranged between the two push plates, one of the push plates is connected with the first driving device (341) or the second driving device (342), and the other push plate is connected with the inner limiting plate (32) or the outer limiting plate (33).

6. The high pier bridge limiting system according to claim 4, wherein: The temperature and pressure self-balancing mechanism (3) further comprises an auxiliary elastic buffer assembly (35), the auxiliary elastic buffer assembly (35) is a second spring coaxially sleeved on the horizontal connecting rod, one end of the second spring is connected with the first mounting base, and the other end of the second spring is connected with the inner limiting plate or the outer limiting plate.

7. The high-pier bridge limiting system according to claim 1, wherein: The first mounting base (1) comprises a channel steel (11) and an angle steel (12) arranged on the upper part of the channel steel, the channel steel (11) is installed vertically on the side surface of the pier top (7), the side of the channel steel (11) away from the second mounting base (2) is fixedly installed with the angle steel (12), and the bottom surface of the angle steel (12) is crimped on the surface of the pier top (7); the side of the channel steel (11) away from the angle steel (12) is fixedly installed with a mounting plate (14), and the horizontal connecting rod (31) is installed on the part of the channel steel (11) beyond the surface of the pier top (7).

8. The high-pier bridge limiting system according to claim 1, wherein: The second mounting base (2) comprises a pressure bearing plate (21) and a connecting plate (22), the pressure bearing plate (21) is fixedly installed on the end beam bottom of the bent cap (8), the connecting plate (22) is sleeved on the horizontal connecting rod (31) between the inner limiting plate (32) and the outer limiting plate (33) and is parallel to the inner limiting plate (32) and the outer limiting plate (33).

9. The high pier bridge limiting system according to claim 2, wherein: The monitoring terminal device (6) is wirelessly connected with the control mechanism (9) through a wireless transceiver, and is used for receiving monitoring data sent by the control mechanism (9).

10. A bridge having a high pier bridge limiting system, characterized by, The high-pier bridge limiting system comprises the high-pier bridge limiting system according to any one of claims 1-9.

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