A device for monitoring and actively protecting the main beam of a single-pillar pier bridge from overturning

Abstract

The present invention provides a single-column pier bridge main beam overturning monitoring and active protection device, including a laser monitoring unit and a safety emergency protection unit; the safety emergency protection unit includes a circular bottom anchor plate, a special steel barrel and a protection component; the circular bottom anchor plate is fixed to the bottom of the main beam; the protection component is installed on the circular bottom anchor plate; the special steel barrel is sleeved on the top of the pier and fixed with anchor bolts; the protection component includes an electromagnetic suction cup, a hanging rod and a turntable; the two ends of the hanging rod are respectively installed on the circular bottom anchor plate through the electromagnetic suction cup and the turntable; the hanging rod is adsorbed on one end of the electromagnetic suction cup and has a barb. When the bridge overturns, the hanging rod falls off the electromagnetic suction cup and is buckled on the special steel barrel to support the bridge. The device of the present invention not only has a simple structure, is easy to install, and is durable, but also can automatically monitor the deflection of the main beam at any time, and can also realize the function of active safety protection.

Description

Technical Field

[0001] The invention relates to the field of bridge monitoring and emergency technology, and in particular to a main beam overturning monitoring and active protection device for a single-column pier bridge. Background Art

[0002] Single-column pier bridges have been used for a long time. They are widely used in urban interchanges, highway ramps, and highway bridge crossovers due to their economical and beautiful appearance, less interference with driving vision, and less occupation of land under the bridge. However, most single-column piers adopt a non-pier-beam consolidation structure, and their pier tops have weak torsional and overturning resistance. Under overloaded or severely unbalanced traffic conditions, major accidents such as main beam overturning, vehicle destruction, and death may occur.

[0003] At present, the monitoring of single-column piers is mainly carried out through manual inspections, and the technical means are mainly regular or irregular manual visual inspections. There are no other effective monitoring technologies and methods for monitoring single-column pier box girders. At the same time, some places and cities where economic conditions permit have strengthened and renovated single-column piers, changed the structural form of single-column piers, and transformed single-column piers into multi-piers or multi-support piers, thereby improving the anti-overturning capacity of the main beam of single-column pier bridges.

[0004] The manual inspection method cannot achieve 24-hour uninterrupted monitoring of single-column pier bridges. Once an overloaded vehicle passes the bridge or the structural stability of the bridge changes, it is difficult to detect it immediately. In addition, manual inspection has the disadvantages of large manpower input, time-consuming and labor-intensive, and large errors caused by human interference, which makes it difficult to meet the needs of comprehensive and real-time supervision of safety hazards of a large number of single-column pier bridges.

[0005] At present, the reconstruction and reinforcement of single-column piers is achieved by adding bridge piers or adding corbels to the original piers. Although the anti-overturning capacity of the box beam of the single-column pier has been increased to a certain extent, the reinforcement and reconstruction work is large in volume and cost, making it difficult to promote it comprehensively. Moreover, the appearance of the reconstructed single-column pier has changed greatly and it occupies more space under the bridge, which completely changes the structural characteristics and transparent and beautiful effect of the single-column pier bridge.

[0006] At present, for a large number of single-column pier bridges that have been reinforced and renovated, there is no long-term real-time safety monitoring method and safety emergency protection device to monitor and actively protect the hidden dangers of box girder overturning of the single-column pier.

[0007] In summary, there is an urgent need for a single-column pier bridge main beam overturning monitoring and active protection device to solve the problems existing in the prior art. Summary of the invention

[0008] The purpose of the present invention is to provide a single-column pier bridge main beam overturning monitoring and active protection device, which adopts automatic monitoring and intelligent control technology as a means to solve the safety problem of single-column pier bridge box beam overturning.

[0009] To achieve the above-mentioned purpose, the present invention provides a single-column pier bridge main beam overturning monitoring and active protection device, including a laser monitoring unit and a safety emergency protection unit;

[0010] The safety emergency protection unit includes a circular bottom anchor plate, a special steel barrel and a protection component; the circular bottom anchor plate is fixed to the bottom of the main beam; the protection component is installed on the circular bottom anchor plate; the special steel barrel is sleeved on the top of the pier and fixed with anchor bolts;

[0011] The protection assembly includes an electromagnetic suction cup, a hanging rod and a rotating disk; the two ends of the hanging rod are respectively installed on the annular bottom anchor plate through the electromagnetic suction cup and the rotating disk; the hanging rod is adsorbed on one end of the electromagnetic suction cup and has a barb, when the bridge overturns, the hanging rod falls off the electromagnetic suction cup and is buckled on a special steel barrel to support the bridge;

[0012] The laser monitoring unit includes a laser rangefinder, a reflector and an equipment integration box; the laser rangefinder and the equipment integration box are both installed on the top of the pier, and the reflector is installed on the circular bottom anchor plate; the laser emitted by the laser rangefinder is reflected on the reflector to monitor the distance change between the main beam and the pier; a digital switch is installed in the equipment integration box, and the data measured by the laser rangefinder is transmitted to the digital switch through a cable. The digital switch is connected to the electromagnet suction cup through a cable and is used to control the on and off of the electromagnet suction cup.

[0013] Furthermore, a plurality of stiffening plates are arranged on the annular bottom anchor plate; the plurality of stiffening plates are evenly distributed in a ring shape on the annular bottom anchor plate.

[0014] Furthermore, the protection components are provided in multiple groups; the multiple groups of protection components are evenly distributed in a ring shape on the annular bottom anchor plate.

[0015] Furthermore, the annular bottom anchor plate and the stiffening plate are welded into a whole and fixed to the bottom of the main beam by anchor bolts.

[0016] Furthermore, the laser rangefinder is fixed to the top of the bridge pier by means of expansion bolts, and the reflective plate is glued to the circular bottom anchor plate by means of industrial glue.

[0017] Furthermore, the special steel barrel has a plurality of bayonet holes, which match the barbs of the hanging rod.

[0018] The application of the technical solution of the present invention has the following beneficial effects:

[0019] (1) The present invention places a laser rangefinder on the top of the bridge pier to monitor the main beam deviation in real time. It has high accuracy, stable data and strong reliability. It can make a reasonable assessment of the local performance and working status of the main beam, provide a scientific basis for bridge maintenance and management decisions, and ensure the safe operation of the bridge.

[0020] (2) The present invention sets a safety emergency protection unit at the bridge pier position. When the bridge deflects greatly, the device automatically starts, the hanging rod falls off the electromagnet suction cup, and snaps onto a special steel barrel, giving support to the main beam and enhancing the structural stability. It can prevent the occurrence of safety accidents such as bridge overturning in the first place, and the device will not change the original bridge structure during the operation of the bridge, nor will it affect the stress of the original designed bridge.

[0021] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure of the overturning monitoring and active protection device for the main beam of a single-column pier bridge;

[0024] Figure 2 yes Figure 1 Middle M section;

[0025] Figure 3 yes Figure 1 Middle N section;

[0026] Figure 4 yes Figure 1 Middle A large sample drawing (safety emergency protection unbraking state);

[0027] Figure 5 yes Figure 1 Middle A large sample drawing (safety emergency protection braking state);

[0028] Among them, 1. Embedded bolts, 2. Stiffening plates, 3. Ring-type bottom anchor plates, 4. Special steel barrels, 5. Laser rangefinders, 6. Equipment integration boxes, 7. Cables, 8. Reflective plates, 9. Electromagnetic suction cups, 10. Hanging rods, 11. Turntables, 12. Main beams, and 13. Supports. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0030] Embodiment 1:

[0031] See also Figure 1 to Figure 5 , a single-column pier bridge main beam overturning monitoring and active protection device, this embodiment is applied to the main beam of a bridge with a single pier and a single support.

[0032] A single-column pier bridge main beam overturning monitoring and active protection device includes a laser monitoring unit and a safety emergency protection unit;

[0033] The safety emergency protection unit includes a circular bottom anchor plate 3, a special steel barrel 4 and a protection component; the circular bottom anchor plate 3 is fixed to the bottom of the main beam 12; the protection component is installed on the circular bottom anchor plate 3; the special steel barrel 4 is sleeved on the top of the pier and fixed with a reinforcing bolt 1;

[0034] The protective assembly includes an electromagnetic suction cup 9, a hanging rod 10 and a turntable 11; the hanging rod 10 is made of iron, and both ends of the hanging rod 10 are respectively installed on the annular bottom anchor plate 3 through the electromagnetic suction cup 9 and the turntable 11; the hanging rod 10 is adsorbed on the electromagnetic suction cup 9 and has a barb at one end. When the bridge overturns, the hanging rod 10 falls off the electromagnetic suction cup 9 and is buckled on the special steel barrel 4 to support the bridge; the special steel barrel 4 has multiple bayonet ports, which match the barb ports of the hanging rod 10.

[0035] The laser monitoring unit includes a laser rangefinder 5, a reflector 8 and an equipment integration box 6; the laser rangefinder 5 is installed on the top of the bridge pier, and the reflector 8 is installed on the annular bottom anchor plate 3; the laser emitted by the laser rangefinder 5 is reflected on the reflector 8 to monitor the distance change between the main beam 12 and the bridge pier; the equipment integration box 6 is also placed on the top of the bridge pier to facilitate operators to install, debug and maintain the laser rangefinder together. A digital switch is installed in the equipment integration box 6, and the data measured by the laser rangefinder 5 is transmitted to the digital switch through the cable 7. The digital switch is connected to the electromagnet suction cup 9 through the cable 7. An early warning value is set to trigger the digital switch to control the power on and off of the electromagnet suction cup 9.

[0036] The equipment integration box 6 also includes a wireless transmission module. The data measured by the laser rangefinder 5 is transmitted to the wireless transmission module through the cable 7. The wireless transmission module then transmits the data to the server, so that the deflection state of the bridge can be monitored. The cable is routed along the bridge piers and the circular anchor plate 3.

[0037] A plurality of stiffening plates 2 are provided on the annular bottom anchor plate 3; the plurality of stiffening plates 2 are evenly distributed in an annular shape on the annular bottom anchor plate 3 to enhance the bearing capacity of the annular bottom anchor plate 3. Eight groups of protection components are provided; the eight groups of protection components are evenly distributed in an annular shape on the annular bottom anchor plate 3. The annular bottom anchor plate 3 and the stiffening plates 2 are welded into a whole and fixed to the bottom of the main beam 12 by the anchor bolts 1.

[0038] The laser rangefinder 5 is fixed to the top of the pier by expansion bolts, and the reflector 8 is glued to the bottom anchor plate of the circular ring by industrial glue. There are two laser rangefinders 5, which are placed on both sides of the support 13 on the top of the pier. When the distance data measured by the two laser rangefinders are inconsistent, it can be determined that the bridge has overturned. At this time, the digital switch controls the electromagnet suction cup to cut off the power, and the hanging rod automatically falls to hook the bayonet, giving the main beam 12 a support effect to prevent the main beam 12 from continuing to overturn. The device of the present invention not only takes into account the simple structure, easy installation, and durability, but also can achieve the function of automatically monitoring the deflection of the main beam 12 at any time, and can also realize the function of active safety protection.

[0039] The installation process and method of the above-mentioned single-column pier bridge main beam overturning monitoring and active protection device are as follows:

[0040] 1) Install the circular anchor plate 3. The circular anchor plate 3 can be welded into a whole in engineering processing and installed at the bottom of the main beam through the anchor bolt 1.

[0041] 2) Install the electromagnetic magnetic chuck 9. The electromagnetic chuck 9 is installed on the annular anchor plate 3 during prefabrication in the factory, and a position for installing the electromagnetic chuck 9 is reserved.

[0042] 3) Paste the reflector 8 and install the laser rangefinder 5. The reflector 8 is firmly attached to the annular anchor plate 3 with industrial glue, and the laser rangefinder 5 is fixed with expansion bolts.

[0043] 4) Install the special steel drum 4. All components of the special steel drum 4 are processed and welded into a whole in the factory, so the special steel drum 4 only needs to be installed on the bridge pier through the anchor bolts 1 on site.

[0044] 5) Install the hanging rod 10 and the rotating disk 11. The hanging rod 10 and the rotating disk 11 are processed and welded into a whole in the factory and fixed on the circular anchor plate 3 by expansion bolts.

[0045] 6) Laying the cables of the laser rangefinder 5 and the electromagnet suction cup 9 to the vicinity of the equipment integration box 6.

[0046] 7) Install the equipment integration box 6. All components of the equipment integration box are processed and welded into a whole in the factory, so it is only necessary to install the Beidou equipment integration box on the bridge pier through expansion bolts on site.

[0047] 8) Install the wireless transmission module and digital switch in the equipment integration box 6, and then debug to ensure the operation of the equipment.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A single-column pier bridge main beam overturning monitoring and active protection device, characterized in that: The invention comprises a safety emergency protection unit; the safety emergency protection unit comprises a circular bottom anchor plate (3), a special steel barrel (4) and a protection component; the circular bottom anchor plate (3) is fixed to the bottom of the main beam; the protection component is installed on the circular bottom anchor plate (3); the special steel barrel (4) is sleeved on the top of the bridge pier and fixed on the bridge pier; The protection component comprises an electromagnetic suction cup (9), a hanging rod (10) and a rotating disk (11); the two ends of the hanging rod (10) are respectively installed on the annular bottom anchor plate (3) through the electromagnetic suction cup (9) and the rotating disk (11); one end of the hanging rod (10) adsorbed on the electromagnetic suction cup (9) has a barb, and when the bridge overturns, the hanging rod (10) falls off the electromagnetic suction cup (9) and is buckled on the special steel barrel (4) to support the bridge; The invention also comprises a laser monitoring unit, wherein the laser monitoring unit comprises a laser rangefinder (5), a reflector (8) and an equipment integration box (6); the laser rangefinder (5) and the equipment integration box (6) are both installed on the top of the bridge pier, and the reflector (8) is installed on the annular bottom anchor plate (3); the laser emitted by the laser rangefinder (5) is reflected on the reflector (8) to monitor the change in the distance between the main beam and the bridge pier; a digital switch is installed in the equipment integration box (6), and the data measured by the laser rangefinder (5) is transmitted to the digital switch through a cable (7); the digital switch is connected to the electromagnet sucker (9) through the cable (7) to control the on and off of the electromagnet sucker (9).

2. The device for monitoring and actively protecting the main beam of a single-column pier bridge from overturning according to claim 1 is characterized in that: A plurality of stiffening plates (2) are arranged on the annular bottom anchoring plate (3); the plurality of stiffening plates (2) are evenly distributed in an annular shape on the annular bottom anchoring plate (3).

3. The device for monitoring and actively protecting the main beam of a single-column pier bridge from overturning according to claim 2 is characterized in that: The protection components are provided in multiple groups; the multiple groups of protection components are evenly distributed in a ring shape on the annular bottom anchoring plate (3).

4. The device for monitoring and actively protecting the main beam of a single-column pier bridge from overturning according to claim 2 is characterized in that: The annular bottom anchor plate (3) and the stiffening plate (2) are welded into a whole and fixed to the bottom of the main beam by means of anchor bolts (1).

5. The device for monitoring and actively protecting the main beam of a single-column pier bridge from overturning according to claim 1 is characterized in that: The laser rangefinder (5) is fixed to the top of the bridge pier by means of expansion bolts, and the reflective plate (8) is glued to the circular bottom anchor plate by means of industrial glue.

6. A device for monitoring and actively protecting the main beam of a single-column pier bridge from overturning according to any one of claims 1 to 5, characterized in that: The special steel barrel (4) has a plurality of bayonet holes, which match the barbs of the hanging rod (10).

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