High-pier bridge limiting system, bridge with high-pier bridge limiting system and limiting regulation and control method

Abstract

The invention discloses a high-pier bridge limiting system, a bridge with the high-pier bridge limiting system and a limiting regulation and control method. The high-pier bridge limiting system comprises a first mounting seat, a second mounting seat and a limiting device, wherein the first mounting seat is arranged on the side face 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 beneficial effects that the high-pier bridge limiting system integrates adjustment, detection and early warning, limiting, monitoring, debugging and early warning can be carried out in a unified mode, one-by-one adjustment by installation constructors on site is not needed, 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 present application belongs to the technical field of bridge engineering, and specifically relates to a high-pier bridge limiting system, a bridge having the system, and a limiting control method. Background Art

[0002] High pier bridges refer to bridges with relatively high piers, usually used to cross complex terrains such as deep valleys, large rivers, and lakes. This type of bridge has the advantages of strong spanning capacity, large bearing capacity, good structural stability, and convenient construction. The pier height of high pier bridges is usually greater than 20m. Due to the low longitudinal stiffness of the pier columns in the route of this type of bridge, when the contact surface between the bottom of the beam and the bearing surface is not horizontal, due to the effects of load bias, vehicle braking force, and temperature difference, an unbalanced horizontal thrust will be generated on the pier top, resulting in a longitudinal displacement of the pier top. The displacement of the pier top caused by the nonlinear effect is difficult to estimate, and as the effect accumulates over a long period of time, if control measures are not taken, the displacement of the pier top will exceed the limit, causing the bearing support position to deviate or the upper and lower steel plates of the pot-type sliding bearing to slide too much relative to each other, resulting in a series of defects such as bearing damage and expansion joint damage. In addition, excessive displacement of the pier top will also lead to an increase in the P-Δ effect, further accelerating the increase in the relative displacement between the pier top and the main beam end, and bringing about a series of unfavorable factors such as increased bending moment at the pier bottom, decreased bearing capacity of the pier, reduced durability and safety of the bridge structure, and impact on normal performance. These problems have occurred in many domestic bridges. If no measures are taken, the gaps between bridges will become larger, the displacement of the pier top will exceed the limit, and a series of problems will occur, such as damage to the bearings due to sliding and excessive expansion joints. In serious cases, the piers will tilt, the bearing capacity will seriously decrease, and normal use will be affected.

[0003] Longitudinal bridge limiters have been used in many bridges in recent years. They can be roughly divided into cable limiters, block limiters and other types of limiters including spring limiters. For example, the patent for a rope-limited elastic bridge bearing (application number 201721240708.X) points out an elastic bridge bearing with rope limit, in which the upper bearing mounting plate and the lower bearing mounting plate swing under the support of the double spherical inlay. When the swing amplitude increases and the rope is tightened, the rope is used to pull the strong spring, and the elasticity of the strong spring is used to block the relative swing of the upper bearing mounting plate and the lower bearing mounting plate, thereby improving the stability of the structure. Another example is a patent for an elastic limiter for bridge correction and a bridge with automatic correction function (application number 201820659989.0). When the bridge beam is subjected to an offset force, the elastic limiter of this application uses a strong spring to buffer the offset force on the bridge beam, making it less likely for the bridge beam to be displaced. If displacement occurs, the strong spring will also pull the bridge beam back in subsequent vibrations and bumps. When the tension of the strong spring needs to be adjusted, the handle is rotated. Since the control rod is threadedly engaged with the movable rod and the movable rod is restricted in its rotation ability by the limit plate, the position of the movable rod can be moved by rotating the handle to adjust the tension of the strong spring. Although the above-mentioned limiters can limit the bridge to a certain extent, they are basically based on the purpose of shock absorption. They are not designed to address the situation where the relative displacement between the pier top and the main beam is too large due to the long-term nonlinear effect of high bridge piers. This is because the mechanism of the excessive relative displacement between the pier and the main beam caused by the long-term nonlinear effect is completely different from that during an earthquake. In actual engineering, the pier top displacement is mostly caused by the cumulative effects of factors such as temperature effect cycles, braking force, and large longitudinal slopes. However, the above-mentioned limiters cannot solve the problem of excessive relative displacement between the pier and the main beam caused by the long-term nonlinear effect. Once the relative displacement between the pier and the main beam exceeds the limit, no early warning can be issued. In addition, the current daily maintenance of bridges requires special maintenance personnel to conduct regular inspections and repairs, which increases the difficulty of daily maintenance of bridges. Summary of the invention

[0004] In view of the shortcomings of the prior art mentioned above, the purpose of the present application is to provide a high-pier bridge limit system, a bridge with the system and a limit control method, which are used to solve the current problem of excessive relative displacement between piers and main beams caused by long-term nonlinear effects, facilitate inspection and maintenance, and provide timely warnings.

[0005] To solve the above problems, the technical solution adopted in this application is: A high pier bridge limiting system according to the present invention is characterized by comprising: A first mounting seat disposed on the side surface of the pier top; A second mounting seat disposed at the bottom of the cap beam end; and A temperature-sensitive pressure self-balancing mechanism is arranged between the first mounting seat and the second mounting seat, and the temperature-sensitive pressure self-balancing mechanism has an adjustable movable gap in the longitudinal direction of the bridge, and the movable gap is used to limit the displacement amplitude of the pier top in the longitudinal direction of the bridge.

[0006] As a preferred embodiment of the present application, the high pier bridge limiting system further includes: A temperature detector, used to detect the ambient temperature and send the temperature data to the control mechanism; A displacement sensor disposed on the temperature-sensing pressure self-balancing mechanism, the displacement sensor is used to detect the longitudinal width of the active gap of the temperature-sensing pressure self-balancing mechanism and send the longitudinal width data to the control mechanism; and / or A control mechanism is arranged on the top of the pier, and is connected to a temperature detector, a displacement sensor, and a temperature-sensing pressure self-balancing mechanism, and is used to receive temperature data sent by the temperature detector and longitudinal width data sent by the displacement sensor, and control the action and state of the temperature-sensing pressure self-balancing mechanism according to the temperature data and the longitudinal width data.

[0007] As a preferred embodiment of the present application, the temperature-sensitive pressure self-balancing mechanism includes a horizontal connecting rod, an inner limit plate and an outer limit plate which are arranged on the horizontal connecting rod and relatively arranged along the longitudinal direction of the bridge, one end of the horizontal connecting rod is connected to the first mounting seat, and the other end passes through the inner limit plate and the second mounting seat in sequence to be connected to the outer limit plate; an elastic spacing adjustment mechanism is arranged between the inner limit plate and the first mounting seat, the elastic spacing adjustment mechanism is connected to a control mechanism, and the control mechanism adjusts the longitudinal spacing between the inner limit plate and the outer limit plate through the elastic spacing adjustment mechanism to limit the displacement amplitude of the pier top in the longitudinal direction of the bridge.

[0008] As a preferred embodiment of the present application, the first mounting seat, the second mounting seat, the inner limiting plate, and the outer limiting plate are all steel components.

[0009] As a preferred embodiment of the present application, the elastic spacing adjustment mechanism includes a first driving device, a second driving device and a main elastic buffer assembly, the first driving device is installed on a first mounting seat, the second driving device is installed on a second mounting seat, the first driving device and the second driving device are respectively connected to the inner limit plate and the outer limit plate through corresponding main elastic buffer assemblies, the first driving device drives the inner limit plate to move in the longitudinal direction of the bridge to adjust the longitudinal width of the first gap between the inner limit plate and the second mounting seat, and the second driving device drives the outer limit plate to move in the longitudinal direction of the bridge to adjust the longitudinal width of the second gap between the outer limit plate and the second mounting seat; the first driving device and the second driving device are connected to the control mechanism.

[0010] As a preferred embodiment of the present application, the main elastic buffer assembly includes two push plates arranged opposite to each other and a plurality of first springs arranged between the two push plates, wherein one push plate is used to connect to the first drive device or the second drive device, and the other push plate is connected to the inner limit plate or the outer limit plate.

[0011] As a preferred embodiment of the present application, the elastic spacing adjustment mechanism also includes an auxiliary elastic buffer assembly, which is a second spring coaxially sleeved on the horizontal connecting rod, one end of the second spring is connected to the first mounting seat, and the other end is connected to the inner limit plate or the outer limit plate.

[0012] As a preferred embodiment of the present application, the first mounting seat includes a channel steel and an angle steel arranged on the upper part of the channel steel, the channel steel is vertically installed on the side of the pier top, the angle steel is fixedly installed on the side of the channel steel away from the second mounting seat, and the bottom surface of the angle steel is crimped to the surface of the pier top; a mounting plate is fixedly installed on the side of the channel steel away from the angle steel, and a horizontal connecting rod is installed on the portion of the channel steel that exceeds the surface of the pier top.

[0013] As a preferred embodiment of the present application, the second mounting seat includes a pressure plate and a connecting plate. The pressure plate is fixedly installed on the bottom of the end beam of the cap beam. The connecting plate is sleeved on the horizontal connecting rod between the inner limit plate and the outer limit plate, and is parallel to the inner limit plate and the outer limit plate.

[0014] As a preferred embodiment of the present application, the pressure plate and the connecting plate are perpendicular to each other.

[0015] As a preferred embodiment of the present application, a stiffening plate is connected between the connecting plate and the pressure plate.

[0016] As a preferred embodiment of the present application, the pressure plate, the connecting plate and the stiffening plate are perpendicular to each other.

[0017] As a preferred embodiment of the present application, stiffening ribs are provided between the connecting plate and the stiffening plate.

[0018] As a preferred embodiment of the present application, it also includes a monitoring terminal device, which is connected to the control mechanism by wireless signals via a wireless transceiver and is used to receive monitoring data sent by the control mechanism.

[0019] As a preferred embodiment of the present application, the temperature detector is arranged on the inner limit plate and / or the outer limit plate. The temperature detector can detect the temperature of the inner limit plate and the outer limit 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.

[0020] The present invention also provides a bridge with a high-pier bridge limiting system, characterized in that it comprises the high-pier bridge limiting system.

[0021] The present invention also provides a method for regulating and controlling the position of a high pier bridge, which is characterized by comprising the following steps: The high pier bridge limit system is installed between the pier top and the cap beam, and during installation, a first gap is reserved between the inner limit plate and the second mounting seat of the high pier bridge limit system, and a second gap is reserved between the outer limit plate and the second mounting seat; The temperature detector detects the ambient temperature and transmits the temperature data to the control mechanism; The control mechanism controls the first driving device and / or the second driving device to adjust the longitudinal widths of the first gap and the second gap according to the temperature zone of the received temperature data; Using a displacement sensor to obtain longitudinal width data of the first gap and the second gap, and transmitting the obtained longitudinal width data to a control mechanism; The control mechanism compares the received longitudinal width data with the preset longitudinal width thresholds of the first gap and the second gap. If the longitudinal width thresholds are exceeded, the control mechanism sends location information and warning information to the monitoring terminal device.

[0022] As a preferred embodiment of the present application, the first gap and the second gap constitute the temperature-sensitive pressure self-balancing mechanism having a movable gap that is adjustable in the longitudinal direction of the bridge, and the longitudinal width of the 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 d of the longitudinal expansion joint between two adjacent cap beams, and the difference between the longitudinal width of the movable gap and the longitudinal expansion amount d of the expansion joint does not exceed 1 cm.

[0023] As a preferred embodiment of the present application, at -5°C ~ 10°C, the longitudinal width of the first gap d1 is greater than the longitudinal width of the second gap d2; at 10°C ~ 30°C, the longitudinal width of the first gap d1 is less than or equal to the longitudinal width of the second gap d2.

[0024] Compared with the prior art, the beneficial effects of this application are: (1) The structure deforms under the action of horizontal force, and the gravity load causes additional effects due to the horizontal deformation. The larger the absolute value of the horizontal displacement of the bridge, the more obvious the P-Δ effect. If the horizontal deformation of the bridge is too large, the structure may become unstable due to the second-order effect of gravity. The present application limits the displacement amplitude of the pier top through the temperature-sensitive pressure self-balancing mechanism, reduces the displacement of the pier top, significantly reduces the P-Δ effect, and effectively reduces the adverse stress condition of the pier caused by the P-Δ effect from the source.

[0025] (2) The movable gap reserved between the steel plates in the high pier bridge limit system of the present invention 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, that is, when the displacement of the pier top is not exceeded, it does not affect the structural stress and does not affect 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 limit system does not play a role. When the pier top is excessively displaced, the inner limit plate or the outer limit plate is squeezed by the second mounting seat, the high pier bridge limit system starts to work, the inner limit plate or the outer limit plate is displaced, so that the movable gap is compressed, and then the excessive displacement is reduced and limited by the deformation of the elastic buffer component of the elastic spacing adjustment mechanism, which can not only play the role of flexible buffering, but also reduce and limit the cumulative effect, effectively avoiding the damage of the bearing or even the collapse of the main beam due to excessive displacement, reducing the difficulty of bridge maintenance, and preventing the pier top displacement from accumulating too much and causing adverse pier stress.

[0026] (3) The present invention converts multi-dimensional complex spatial limitations into simple longitudinal limitations, which can reduce the detection difficulty of the detection mechanism, improve the accuracy of the detection results, and reduce energy consumption.

[0027] (4) The high pier bridge limit system of the present invention has an early warning function, which can issue an early warning message when the pier top is excessively deviated, reminding bridge maintenance personnel to maintain the overloaded high pier bridge limit system.

[0028] (5) The high pier bridge limit system of the present invention integrates adjustment, detection and early warning, and can perform limit, monitoring, debugging and early warning in a unified manner. There is no need for installation construction personnel to make adjustments on site one by one, which greatly reduces labor intensity and improves installation efficiency. During daily maintenance, there is no need to check the connecting parts of the bridge one by one, and daily maintenance can be completed, which greatly reduces the difficulty of maintenance and improves the degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a flowchart of the high pier bridge limit control method of this application.

[0030] Figure 2 It is a structural schematic diagram of a high pier bridge limiting system in one embodiment of the present application.

[0031] Figure 3 It is a structural schematic diagram of a high pier bridge limiting system in another embodiment of the present application.

[0032] Figure 4 This is a schematic diagram of the installation of a high pier bridge limiting system in one embodiment of the present application.

[0033] Figure 5 for Figure 4Enlarged view of point E.

[0034] Figure 6 for Figure 5 AA section view.

[0035] Figure 7 for Figure 5 BB cross-sectional view.

[0036] Figure 8 for Figure 5 CC cross-sectional view.

[0037] Fig. 9 This is a schematic structural diagram of a high pier bridge limiting system in the third embodiment of the present application.

[0038] Fig.10 for Fig. 9 A partial enlarged view of .

[0039] Fig.11 This is a schematic diagram of the installation of a high pier bridge limiting system in the fourth embodiment of the present application.

[0040] In the accompanying drawings: 1-first mounting seat; 11-channel steel; 12-angle steel; 121-reinforcement plate; 13-chemical anchor bolt; 14-mounting plate; 2-second mounting seat; 21-pressure bearing plate; 22-connecting plate; 23-stiffening plate; 24-stiffening rib; 3-temperature sensing pressure self-balancing mechanism; 31-horizontal connecting rod; 32-inner limit plate; 33-outer limit plate; 34-elastic spacing adjustment mechanism; 341-first driving device; 342-second driving device; 343-main elastic buffer assembly; 3431-push plate; 3432-first spring; 35-auxiliary elastic buffer assembly; 36-limit block; 4- Temperature detector; 5- Displacement sensor; 6-Monitoring terminal equipment; 7- Top of pier; 8- cap beam; 81- support; 9- Control mechanism. DETAILED DESCRIPTION

[0041] The following describes the implementation of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application.

[0042] It should be noted that the process equipment or devices not specifically specified in the following embodiments are all conventional equipment or devices in the art.

[0043] In addition, it should be understood that one or more method steps mentioned in this application do not exclude the existence of other method steps before or after the combination step or the insertion of other method steps between these explicitly mentioned steps, unless otherwise specified; it should also be understood that the combination connection relationship between one or more devices / apparatuses mentioned in this application does not exclude the existence of other devices / apparatuses before or after the combination device / apparatus or the insertion of other devices / apparatuses between these two explicitly mentioned devices / apparatuses, unless otherwise specified. Moreover, unless otherwise specified, the numbering of each method step is only a convenient tool for identifying each method step, and is not intended to limit the order of arrangement of each method step or the scope of implementation of this application. Changes or adjustments in their relative relationships shall also be regarded as the scope of implementation of this application without substantial changes in the technical content.

[0044] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0045] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "inner", "outer", "axial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application 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 on the present application. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0046] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", 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 this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0048] The present application is further described below in conjunction with specific embodiments, but the protection scope of the present application is not limited thereto.

[0049] A high pier bridge limiting system according to the present invention comprises: A first mounting seat 1 arranged on the side of the pier top 7; A second mounting seat 2 disposed at the bottom of the end of the cap beam 8; and A temperature-sensing pressure self-balancing mechanism 3 is arranged between the first mounting seat 1 and the second mounting seat 2. The temperature-sensing pressure self-balancing mechanism 3 has an adjustable movable gap in the longitudinal direction of the bridge. The movable gap is used to detect the longitudinal displacement of the pier top 7 and adjust the displacement amplitude of the pier top 7 in the longitudinal direction of the bridge.

[0050] The high pier bridge limiting system of the present invention further comprises: A temperature detector 4 is used to detect the ambient temperature and send the temperature data to the control mechanism 9; A displacement sensor 5 is provided on the temperature-sensing pressure self-balancing mechanism 3, wherein the displacement sensor 5 is used to detect the longitudinal width of the active gap of the temperature-sensing pressure self-balancing mechanism 3 and send the longitudinal width data to the control mechanism 9; and / or A control mechanism 9 is arranged on the top of the pier 7, and is connected to the temperature detector 4, the displacement sensor 5, and the temperature-sensing pressure self-balancing mechanism 3. The control mechanism 9 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 control the action and state of the temperature-sensing pressure self-balancing mechanism 3 according to the temperature data and the longitudinal width data.

[0051] In some embodiments of the present invention, the temperature-sensing pressure self-balancing mechanism 3 includes a horizontal connecting rod 31, an inner limit plate 32 and an outer limit plate 33 which are arranged on the horizontal connecting rod 31 and relatively arranged in 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 limit plate 32, the second mounting seat 2 and the outer limit plate 33 in sequence; an elastic spacing adjustment mechanism 34 is arranged between the inner limit plate 32 and the first mounting seat 1, and the elastic spacing adjustment mechanism 34 is connected to the control mechanism 9, and the control mechanism 9 adjusts the longitudinal spacing between the inner limit plate 32 and the outer limit 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.

[0052] In some embodiments of the present invention, the elastic spacing adjustment mechanism 34 includes a first driving device 341, a second driving device 342 and a main elastic buffer component 343, the first driving device 341 is installed on the first mounting seat 1, and the second driving device 342 is installed on the second mounting seat 2, the first driving device 341 and the second driving device 342 are respectively connected to the inner limit plate 32 and the outer limit plate 33 through the corresponding main elastic buffer component 343, the first driving device 341 drives the inner limit plate 32 to move along the longitudinal direction of the bridge to adjust the longitudinal width of the first gap between the inner limit plate 32 and the second mounting seat 2, and the second driving device 342 drives the outer limit plate 33 to move along the longitudinal direction of the bridge to adjust the longitudinal width of the second gap between the outer limit plate 33 and the second mounting seat 2; the first driving device 341 and the second driving device 342 are connected to the control mechanism 9.

[0053] In some embodiments of the present invention, the main elastic buffer assembly 343 includes two push plates 3431 arranged opposite to each other and a plurality of first springs 3432 arranged between the two push plates, wherein one push plate is used to connect with the first driving device 341 or the second driving device 342, and the other push plate is connected with the inner limit plate 32 or the outer limit plate 33. The first spring is welded between the two push plates to ensure that the springs can work together; the working load of the first spring in the working state is about 50kN to 100kN; the limit load is about 200kN; the free length should not be too long, preferably about 8cm to 12cm; the stiffness of the first spring should take a larger value to ensure that the spring deformation in the working state is small and can play a role of limiting, and the stiffness of the springs working together should be taken so that the spring deformation under the limit load does not exceed 20% of the total length of the spring, that is, about 6kN / mm to 12kN / mm.

[0054] In some embodiments of the present invention, the temperature-sensitive pressure self-balancing mechanism 3 further includes an auxiliary elastic buffer component 35, which is a second spring coaxially sleeved on the horizontal connecting rod 31, one end of the second spring is connected to the first mounting seat 1, and the other end is connected to the inner limit plate 32 or the outer limit plate 33. The working load of the second spring in the working state is about 50kN~100kN; the limit load is about 200kN; the free length should not be too long, preferably about 8cm~12cm; the stiffness of the second spring should take a larger value to ensure that the spring deformation is small in the working state, and can play a role in limiting. The spring stiffness is preferably taken so that the spring deformation under the limit load does not exceed 20% of the total length of the spring, that is, about 6kN / mm~12kN / mm.

[0055] In some embodiments of the present invention, the first mounting seat 1 includes a channel steel 11 and an angle steel 12 arranged on the upper part of the channel steel, the channel steel 11 is vertically installed on the side of the pier top 7, the angle steel 12 is fixedly installed on the side of the channel steel 11 away from the second mounting seat 2, and the bottom surface of the angle steel 12 is crimped to the surface of the pier top 7; the mounting plate 14 is fixedly installed on the side of the channel steel 11 away from the angle steel 12, and the horizontal connecting rod 31 is installed on the portion of the channel steel 11 that exceeds the surface of the pier top 7.

[0056] In some embodiments of the present invention, the cap beam 8 is installed on the pier top 7 via a support 81 .

[0057] In some embodiments of the present invention, the channel steel 11 is fixedly installed on the side of the pier top 7 away from the second mounting seat 2 by a plurality of chemical anchor bolts 13. When planting the chemical anchor bolts, it is important to avoid the original steel bars of the component.

[0058] In some embodiments of the present invention, a plurality of reinforcing plates 121 are disposed on the angle steel 12 . The reinforcing plates 121 are perpendicular to the angle steel 12 and can play a supporting role.

[0059] In some embodiments of the present invention, the second mounting seat 2 includes a pressure plate 21 and a connecting plate 22. The pressure plate 21 is fixedly installed on the bottom of the end beam of the cap beam 8. The connecting plate 22 is sleeved on the horizontal connecting rod 31 between the inner limit plate 32 and the outer limit plate 33, and is parallel to the inner limit plate 32 and the outer limit plate 33.

[0060] In some embodiments of the present invention, the pressure plate 21 is fixedly installed at the bottom of the end of the cap beam 8 by a plurality of chemical anchor bolts 13 .

[0061] In some embodiments of the present invention, the pressure plate 21 and the connecting plate 22 are perpendicular to each other.

[0062] In some embodiments of the present invention, a stiffening plate 23 is connected between the connecting plate 22 and the pressure plate 21 .

[0063] In some embodiments of the present invention, the pressure plate 21, the connecting plate 22, and the stiffening plate 23 are perpendicular to each other.

[0064] In some embodiments of the present invention, a stiffening rib 24 is welded between the connecting plate 22 and the stiffening plate 23 to provide a stable support.

[0065] In some embodiments of the present invention, the displacement sensor 5 is disposed on the inner limit plate 32 and / or the outer limit plate 33 and connected to the control mechanism 9 for detecting the longitudinal width of the first gap and / or the second gap.

[0066] In some embodiments of the present invention, the high pier bridge limiting system further includes a monitoring terminal device 6 , which is wirelessly connected to the control mechanism 9 via a wireless transceiver and is used to receive monitoring data sent by the control mechanism 9 .

[0067] In some embodiments of the present invention, the temperature-sensing pressure self-balancing mechanism 3 is further provided with a limit stopper 36. When the high pier bridge limit system is warned, the limit stopper 36 can prevent the inner limit plate from being further compressed.

[0068] The present invention also provides a bridge with a high-pier bridge limiting system, comprising the high-pier bridge limiting system.

[0069] The present invention also provides a method for regulating and controlling the position of a high pier bridge, comprising the following steps: S1: Install the high pier bridge limit system between the pier top 7 and the end beam bottom of the cap beam 8. During installation, a first gap is reserved between the inner limit plate 32 of the high pier bridge limit system and the second mounting seat 2, and a second gap is reserved between the outer limit plate 33 and the second mounting seat 2; S2 temperature detector 4 detects the temperature of the high pier bridge limit system and transmits the temperature data to the control mechanism 9; S3 the control mechanism 9 controls the first driving device 341 and / or the second driving device 342 to adjust the size of the first gap and the second gap according to the temperature zone of the received temperature data; S4: using the displacement sensor 5 to obtain the longitudinal width of the first gap and the second gap, and transmitting the obtained distance data to the control mechanism 9; S5 The control mechanism 9 compares the received distance data with the preset safety distance thresholds of the first gap and the second gap. If the safety displacement threshold is exceeded, the control mechanism 9 sends the location information and warning information to the monitoring terminal device 6.

[0070] In some embodiments of the present invention, the first gap and the second gap constitute the temperature-sensitive pressure self-balancing mechanism with an adjustable movable gap in the longitudinal direction of the bridge, and the movable gap can ensure that the high pier bridge limit system does not work when the pier top does not have a large displacement; the longitudinal width of the movable gap is smaller than the pier top displacement limit required by the specification (the "Highway Engineering Quality Inspection and Evaluation Standard" (JTGF80 / 1-2004) allows a verticality deviation of 3‰, and the "Highway Bridge Technical Condition Evaluation Standard" (JTG / T H21- 2011) pier top displacement limit L is the minimum span between box beam piers, measured in meters), so that after the spring is compressed and deformed, the pier top displacement is still not too large. The longitudinal width of the movable gap (that is, 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 longitudinal expansion joint between the two adjacent cap beams 8, and the difference between the longitudinal width of the movable gap and the longitudinal expansion amount of the expansion joint does not exceed 1 cm.

[0071] In some embodiments of the present invention, at -5°C to 10°C, the longitudinal width of the first gap d1 is greater than the longitudinal width of the second gap d2; at 10°C to 30°C, the longitudinal width of the first gap d1 is smaller than the longitudinal width of the second gap d2.

[0072] Specifically, taking the inner limit plate and the outer limit plate as 80-type steel and 160-type steel as an example, the preferred values ​​of the first gap d1 and the second gap d2 under different ambient temperatures are shown in Table 1.

[0073] Table 1 Taking a span of 25m as an example, the displacement limit of the top of the pier is 2.5cm. The first gap d1 and the second gap d2 are adjusted to the designed size according to the temperature. When the first gap d1 and the second gap d2 exceed the limit, the elastic buffer component in the elastic spacing adjustment mechanism intervenes to reduce and limit the excessive displacement through the deformation of the spring in the elastic buffer component, and the cumulative effect is reduced and limited. When d1 and d2 reach 2.5cm, the background warning is issued. The displacement limit of conventional bridges is 1.5~1.8cm. After the introduction of this system, there is almost no alarm during the replacement period of the bearing 81.

[0074] The above examples are for the purpose of illustrating the embodiments disclosed in the present application and should not be construed as limiting the present application. In addition, the various modifications listed herein and the variations of methods and compositions in the invention are obvious to those skilled in the art without departing from the scope and spirit of the present application. Although the present application has been specifically described in conjunction with various specific preferred embodiments of the present application, it should be understood that the present application should not be limited to these specific embodiments. In fact, various modifications obvious to those skilled in the art as described above to obtain inventions should be included within the scope of the present application.

Claims

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

2. A high pier bridge limiting system according to claim 1, characterized in that: Also includes: A temperature detector (4) for detecting the ambient temperature and sending the temperature data to a control mechanism (9); a displacement sensor (5) disposed on the temperature-sensitive pressure self-balancing mechanism (3), the displacement sensor (5) being used to detect the longitudinal width of the active gap of the temperature-sensitive pressure self-balancing mechanism (3) and to send longitudinal width data to the control mechanism (9); and / or A control mechanism (9) is disposed on the top of a pier (7), the control mechanism (9) being connected to a temperature detector (4), a displacement sensor (5), and a temperature-sensitive pressure self-balancing mechanism (3), and being used for receiving temperature data sent by the temperature detector (4) and 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.

3. A high pier bridge limiting system according to claim 1, characterized in that: The temperature-sensitive pressure self-balancing mechanism (3) comprises 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 arranged relatively in 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 arranged between the inner limiting plate (32) and the first mounting seat (1); the elastic spacing adjustment mechanism (34) is connected to a 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 adjustment mechanism (34) to limit the displacement amplitude of the pier top (7) in the longitudinal direction of the bridge.

4. A high pier bridge limiting system according to claim 3, characterized in that: The elastic spacing adjustment mechanism (34) comprises a first driving device (341), a second driving device (342) and a main elastic buffer component (343); the first driving device (341) is mounted on the first mounting seat (1); the second driving device (342) is mounted on the second mounting seat (2); the first driving device (341) and the second driving device (342) are connected to the inner limit plate (32) and the outer limit plate (33) via corresponding main elastic buffer components (343); the first driving device (341) drives the inner limit plate (32) to move in the longitudinal direction of the bridge to adjust the longitudinal width of the first gap between the inner limit plate (32) and the second mounting seat (2); the second driving device (342) drives the outer limit plate (33) to move in the longitudinal direction of the bridge to adjust the longitudinal width of the second gap between the outer limit plate (33) and the second mounting seat (2); the first driving device (341) and the second driving device (342) are connected to the control mechanism (9).

5. A high pier bridge limiting system according to claim 1, characterized in that: The first mounting seat (1) comprises a channel steel (11) and an angle steel (12) arranged on the upper part of the channel steel, the channel steel (11) being vertically mounted on the side of the pier top (7), the angle steel (12) being fixedly mounted on the side of the channel steel (11) away from the second mounting seat (2), the bottom surface of the angle steel (12) being pressed against the surface of the pier top (7); a mounting plate (14) being fixedly mounted on the side of the channel steel (11) away from the angle steel (12), and a horizontal connecting rod (31) being mounted on the portion of the channel steel (11) that exceeds the surface of the pier top (7).

6. A high pier bridge limiting system according to claim 1, characterized in that: The second mounting seat (2) comprises a pressure-bearing plate (21) and a connecting plate (22); the pressure-bearing plate (21) is fixedly mounted on the bottom of the end beam of the cap beam (8); the connecting plate (22) is sleeved on a horizontal connecting rod (31) between an inner limit plate (32) and an outer limit plate (33), and is parallel to the inner limit plate (32) and the outer limit plate (33).

7. A high pier bridge limiting system according to claim 2, characterized in that: It also includes a monitoring terminal device (6), which is connected to the control mechanism (9) by wireless signals via a wireless transceiver and is used to receive monitoring data sent by the control mechanism (9).

8. A bridge with a high pier bridge limit system, characterized in that: It comprises the high pier bridge limiting system according to any one of claims 1 to 7.

9. A method for limiting and controlling a high pier bridge, characterized in that: The following steps are involved: The high pier bridge limiting system is installed between the pier top (7) and the cap beam (8), and during the installation, a first gap is reserved between the inner limiting plate (32) of the high pier bridge limiting system and the second mounting seat (2), and a second gap is reserved between the outer limiting plate (33) and the second mounting seat (2); The temperature detector (4) detects the ambient temperature and transmits the temperature data to the control mechanism (9); The control mechanism (9) controls the first driving device (341) and / or the second driving device (342) to operate according to the temperature zone of the received temperature data so as to adjust the longitudinal widths of the first gap and the second gap; Using a displacement sensor (5) to obtain the longitudinal widths of the first gap and the second gap, and transmitting the obtained longitudinal width data to a control mechanism (9); The control mechanism (9) compares the received longitudinal width data with preset longitudinal width thresholds of the first gap and the second gap. If the longitudinal width thresholds are exceeded, the control mechanism (9) sends position information and warning information to the monitoring terminal device (6).

10. The method for controlling the position of a high pier bridge according to claim 9, characterized in that: The first gap and the second gap constitute the temperature-sensitive pressure self-balancing mechanism with an adjustable movable gap in the longitudinal direction of the bridge. The longitudinal width of the movable gap is not less than the longitudinal expansion amount of the longitudinal expansion joint between two adjacent cap beams, and the difference between the longitudinal width of the movable gap and the longitudinal expansion amount of the expansion joint does not exceed 1 cm.

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