CN216919987U

CN216919987U - Bridge bearing with force measuring function

Info

Publication number: CN216919987U
Application number: CN202220136216.0U
Authority: CN
Inventors: 方圣恩; 郑金林; 江星
Original assignee: Fujian Rongsheng Municipal Engineering Co ltd; Fuzhou University
Current assignee: Fujian Rongsheng Municipal Engineering Co ltd; Fuzhou University
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-07-08
Anticipated expiration: 2032-01-19

Abstract

The utility model provides a bridge beam supports with dynamometry function, includes controller, bedplate down, goes up the bedplate, the interval is provided with magnetite, lower magnetite from top to bottom between bedplate down and the bedplate down, and lower magnetite S utmost point is upwards, goes up the magnetite S utmost point downwards, goes up the magnetite and mutually supports through S utmost point in opposite directions with lower magnetite, bears and calculates the support counter-force of bridge, this bridge beam supports simple structure, and reasonable in design measures the relative distance of two magnetite through displacement sensor to calculate the support counter-force of bridge, reach real-time supervision' S effect, reduced the estimation error of support counter-force.

Description

Bridge support with force measuring function

Technical Field

The utility model relates to the technical field of bridge supports, in particular to a bridge support with a force measuring function.

Background

The bridge support is an important component for connecting the upper and lower structures of the bridge, is a supporting part of a bridge span and an important component of the whole bridge structure, has the main function of transferring various loads borne by the upper structure to the abutment, can adapt to the deformation of the upper structure of the bridge, and enables the actual stress conditions of the upper and lower structures to conform to a design and calculation diagram.

Since the 21 st century, the manufacturing technology of bridge supports in China has been developed greatly, and the types, bearing tonnage and processing quality of the supports are improved. On widely used rubber bearings, there are appeared, for example, plate-type rubber bearings, pot-type rubber bearings, lead-core rubber bearings, and the like. However, the rubber material is subject to aging and cracking under the influence of environmental factors such as ozone, ultraviolet rays and the like and external force, thereby seriously reducing the bearing capacity of the support and shortening the service life of the support. Simultaneously because the rubber support has certain elasticity, its vertical power is not convenient for monitor, and cold area rubber materials's mechanical properties receives great influence, if can't know vertical power size in real time, has the potential safety hazard easily.

The monitoring of the counter force of the support is helpful for knowing the whole stress state of the bridge structure, and whether the assumption of boundary conditions is reasonable or not in the design process can be verified. The existing support counter-force monitoring principle is that a jack is installed beside a measured support, the jacking force is exerted in a grading manner, the vertical displacement of the support under the action of each level of jacking force is recorded, a force-displacement relation graph is drawn, and the actual counter-force value of the support is obtained through analysis and comparison. But the method has the defects of complex operation, larger calculated support reaction force error due to certain elasticity of the rubber material, and difficulty in reflecting the real stress performance of the support.

Disclosure of Invention

The utility model aims to overcome the defects and provides a stress-dispersed bridge support with a force measuring function.

According to the technical scheme, the bridge support with the force measuring function comprises magnets, a lower seat plate and an upper seat plate, wherein the upper magnets and the lower magnets are arranged between the lower seat plate and the lower seat plate at intervals from top to bottom, the S poles of the lower magnets face upwards, the S poles of the upper magnets face downwards, and the upper magnets and the lower magnets are matched with each other through opposite S poles.

Further, still include the controller, the magnetite upper end is provided with displacement sensor down, and displacement sensor passes through wire and controller electric connection, and displacement sensor real-time measurement goes up the magnetite and down the interval displacement between the magnetite to feed back to the controller, the function of support counter-force and transmission is calculated according to the numerical value of displacement sensor feedback to the controller.

Further, a bottom basin is arranged at the upper end of the lower seat plate, a bottom magnetism isolating material layer is arranged at the inner bottom of the bottom basin, a lower magnet is fixedly installed on the upper surface of the bottom magnetism isolating material layer, a middle steel plate is arranged on the bottom basin, the lower end of the middle steel plate is sleeved in the bottom basin, and an upper magnet is installed at the lower end of the middle steel plate in an embedded mode.

Furthermore, a side magnetic isolation material layer is arranged on the inner wall or the outer wall of the periphery of the bottom basin.

Compared with the prior art, the utility model has the following beneficial effects: simple structure, reasonable in design measures the relative distance of two magnetite through displacement sensor to calculate the support counter-force of bridge, reach real-time supervision's effect, reduced the estimation error of support counter-force.

Drawings

The utility model is further described with reference to the following figures.

Fig. 1 is a front sectional view of a stand-off structure.

FIG. 2 is a side cross-sectional view of a standoff structure.

Fig. 3 is an exploded view of the stand structure.

Fig. 4 is a schematic view of a structure of a holder provided with a displacement sensor.

In the figure: 1-lower seat plate, 2-bottom basin, 3.1-bottom magnetic isolation material, 3.2-side magnetic isolation material, 4.1-lower magnet, 4.2-upper magnet, 5-middle steel plate, 6-polytetrafluoroethylene sliding plate, 7-stainless steel plate, 8-upper seat plate, 9-shock absorption material, 10-controller, 11-displacement sensor and 12 wires.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-3, a bridge support with force measuring function comprises a controller and a 10 lower seat plate 1, wherein a bottom basin 2 is arranged at the upper end of the lower seat plate, a bottom magnetic isolation material layer 3.1 and a side magnetic isolation material layer 3.2 are respectively arranged at the inner bottom and the peripheral side wall of the bottom basin, a lower magnet 4.1 with an upward S pole is fixed on the upper surface of the bottom magnetic isolation material layer, a middle steel plate 5 is arranged on the bottom basin, the lower end of the middle steel plate is sleeved in the bottom basin, an upper magnet 4.2 with a downward S pole is embedded at the lower end of the middle steel plate, and the upper magnet and the lower magnet are mutually matched through the opposite S poles to bear and calculate the support counter force of the bridge;

as shown in fig. 4, for realizing real-time force measurement, a displacement sensor 11 is arranged at the upper end of a lower magnet in a bottom basin, the displacement sensor is electrically connected with a controller through a wire 12, the displacement sensor measures the displacement of the distance between the upper magnet and the lower magnet in real time and feeds back the displacement to the controller, the controller calculates the counter force of a support according to the value fed back by the displacement sensor and transmits the counter force, the bridge support bears the vertical force from the upper structure of the bridge through the mutual matching of repulsive forces generated by the two magnets with opposite S poles, the relative distance between the two magnets is measured through the displacement sensor, the counter force of the support of the bridge is calculated, the effect of real-time monitoring is achieved, and the estimation error of the counter force of the support is reduced.

In this embodiment, middle steel sheet upper end be equipped with polytetrafluoroethylene slide 6, be equipped with the upper seat board 8 that the bottom is corrosion resistant plate 7 on the polytetrafluoroethylene slide, slide through the plane between tetrafluoroethylene board and the corrosion resistant plate and adapt to the horizontal longitudinal displacement requirement of bridge, avoided the mechanical properties degradation of low temperature effect undersetting.

In this embodiment, the middle steel plate and the two ends of the upper seat plate are provided with the damping materials 9, so that the received vibration is relieved, and the possibility that the support and the pier collide simultaneously to generate larger pressure is avoided.

In this embodiment, the upper surface of middle steel sheet is equipped with the recess, and in the middle of the polytetrafluoroethylene board embedding steel sheet recess, the polytetrafluoroethylene board upper end was located middle steel sheet top.

In this embodiment, bedplate, middle steel sheet and last bedplate surface all are equipped with the protective paint layer down, and the protective paint layer makes the support difficult by the erosion oxidation, life-span, reduce cost.

During force measurement:

firstly, calibrating, namely loading a calibration loading force on an upper seat plate, recording the relative distance between an upper magnet and a lower magnet, and obtaining a relational expression between the calibration loading force and the relative distance between the two magnets;

then, measuring the force, and reversely obtaining a vertical loading force value on the bridge support by recording the relative distance of the two magnets according to a relational expression between the calibrated loading force and the relative distance of the two magnets;

in order to realize real-time force measurement, the relative distance between the two magnets is measured in real time through the displacement sensor, the measured value is transmitted to the controller in real time, and the controller reversely obtains a vertical loading force value on the bridge support through the displacement value measured in real time through the displacement sensor according to a relational expression of the calibrated loading force and the displacement value of the displacement sensor.

If this patent discloses or refers to parts or structures that are fixedly connected to each other, the fixedly connected may be understood as: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).

In the description of this patent, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the patent, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

The above-mentioned preferred embodiments, further illustrating the objects, technical solutions and advantages of the present invention, should be understood that the above-mentioned are only preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a bridge beam supports with dynamometry function, includes magnetite, bedplate, last bedplate down, its characterized in that: an upper magnet and a lower magnet are arranged between the lower seat plate and the lower seat plate at intervals up and down, the S pole of the lower magnet faces upwards, the S pole of the upper magnet faces downwards, and the upper magnet and the lower magnet are matched with each other through opposite S poles;

still include the controller, the magnetite upper end is provided with displacement sensor down, and displacement sensor passes through wire and controller electric connection, and displacement sensor real-time measurement goes up the magnetite and down the interval displacement between the magnetite to feed back to the controller, the controller is according to the numerical value calculation support counter-force of displacement sensor feedback and outwards transmission.

2. The bridge bearing with force measuring function of claim 1, wherein: the improved water-saving basin is characterized in that a bottom basin is arranged at the upper end of the lower base plate, a bottom magnetic isolation material layer is arranged at the inner bottom of the bottom basin, a lower magnet is fixedly arranged on the upper surface of the bottom magnetic isolation material layer, a middle steel plate is arranged on the bottom basin, a lower end of the middle steel plate is sleeved in the bottom basin, and an upper magnet is embedded in the lower end of the middle steel plate.

3. The bridge bearing with force measuring function of claim 2, wherein: and a side magnetic isolation material layer is arranged on the inner wall or the outer wall of the periphery of the bottom basin.