A bridge pier anti-collision device convenient to replace and a construction method thereof

Abstract

The present application relates to a kind of bridge pier anti-collision device and construction method of convenient replacement, including two circles of steel wire rope around being installed in bridge pier anti-collision part upper and lower part, a circle of closely arranged anti-collision sheet is arranged in the circumferential direction outside bridge pier anti-collision part, the anti-collision sheet is composed of outer layer rubber sheet and inner layer super high performance concrete sheet, the upper and lower part of the inner surface of the super high performance concrete sheet is hung on corresponding steel wire rope.This device can be conveniently replaced, and vehicle and personnel can be protected to a certain extent.

Description

Technical Field

[0001] The invention relates to a conveniently replaceable bridge pier anti-collision device and a construction method. Background Art

[0002] Vehicle impacts with bridge piers have become one of the main causes of bridge failure in cities around the world. As the primary vertical load-bearing components of bridges, vehicle impacts can lead to damage, reduced bearing capacity, and even collapse of the bridge superstructure.

[0003] While rigid protective measures such as outsourcing concrete and steel boxes can help protect piers by increasing the rigidity of pier protection structures, the rigid protection design does not fully consider the impact of collisions on vehicles and personnel. Therefore, in recent years, the use of outsourcing flexible porous sandwich sacrificial collision-proof structures has been proposed. Examples include the double-layer flexible pier collision-proof device combining fiber cloth-constrained bulk and foam, disclosed in Patent No. CN202011569711.2, and the buffering, energy-absorbing web-reinforced composite collision-proof device disclosed in Patent No. CN201120564825.8. These devices can dissipate the energy generated during the collision, reduce the initial peak impact force, prevent severe damage to the piers, and mitigate vehicle damage.

[0004] Although the flexible sandwich structure achieves two-way protection for vehicles and bridge piers, the installation and construction of the anti-collision device is complicated, and the repair and replacement cycle after impact damage is long, and it cannot be replaced in time; in addition, in order to protect the bridge piers, rigid materials are often used on the outside of traditional anti-collision devices, which cannot protect vehicles and personnel; scaffolding must be set up during installation and construction, occupying the road and affecting traffic. Summary of the Invention

[0005] The purpose of the present invention is to provide a bridge pier anti-collision device and a construction method that can be easily replaced. The device can be easily replaced and can provide certain protection for vehicles and personnel.

[0006] The technical solution of the present invention is: a conveniently replaceable bridge pier anti-collision device, including two circles of steel wire rope installed around the upper and lower parts of the bridge pier anti-collision part, and a circle of tightly arranged anti-collision plates arranged along the circumferential direction on the outside of the bridge pier anti-collision part. The anti-collision plates are composed of an outer rubber plate and an inner ultra-high performance concrete plate, and the upper and lower parts of the inner surface of the ultra-high performance concrete plate are both hung on the corresponding steel wire ropes.

[0007] Furthermore, the upper and lower parts of the inner surface of the ultra-high performance concrete sheet are provided with L-shaped steel grooves for embedding steel wire ropes, a steel mesh is provided inside the ultra-high performance concrete sheet, and the rubber sheet is adhered to the outer surface of the ultra-high performance concrete sheet.

[0008] Furthermore, the rubber sheet is bonded to the ultra-high performance concrete sheet via an adhesive.

[0009] Furthermore, the steel wire rope is evenly provided with a plurality of bases connected to the anti-collision parts of the bridge pier in the circumferential direction, and the two ends of the steel wire rope are connected via a connector.

[0010] Furthermore, the connector includes a threaded sleeve rotatably connected to one end of the wire rope, and the other end of the wire rope is rotatably connected to a threaded rod for threaded connection with the threaded sleeve.

[0011] Furthermore, the threaded sleeve and the threaded rod are both provided with a nut portion at one end close to the wire rope.

[0012] Furthermore, the base includes a sleeve for being sleeved on the steel wire rope, and a support rod embedded in the bridge pier by drilling and planting reinforcement is fixed on the sleeve.

[0013] Furthermore, a base is sleeved on the support rod, and the base is bonded to the bridge pier.

[0014] Furthermore, five bases are evenly fixed on the anti-collision portion of the pier along the circumferential direction.

[0015] A construction method for a conveniently replaceable bridge pier anti-collision device, comprising the following steps:

[0016] (1) Put five bases on each of the two steel ropes and wrap them around the bridge pier. Connect the two ends of the steel ropes with connectors.

[0017] (2) Drill five holes evenly along the circumference of the anti-collision part of the bridge pier. Put the support rods on the base and insert them into the holes of the bridge pier. Apply strong glue inside the holes and on the bottom surface of the base.

[0018] (3) After the super glue solidifies, rotate the connector to apply pre-tightening force;

[0019] (4) Prefabricate several equally divided rubber sheets and ultra-high performance concrete sheets according to the size of the bridge piers; L-shaped steel grooves are embedded in the upper and lower inner surfaces of the ultra-high performance concrete sheets before pouring. After the ultra-high performance concrete sheets are cast and formed, they are bonded to the rubber sheets with SiKa32LP adhesive to form anti-collision sheets;

[0020] (5) Hang the anti-collision plate on the wire rope;

[0021] (6) After assembly, use sealant to fill the gaps between the anti-collision plates and between the anti-collision plates and the bridge piers;

[0022] (7) When a collision occurs on the bridge pier during service, part of the anti-collision plate is damaged. Simply replace the damaged anti-collision plate, hang a new one, and then repeat the above steps (5)-(6).

[0023] Compared with the prior art, the present application has the following advantages:

[0024] 1. The device helps to solve the problems of existing pier anti-collision device installation complexity, long repair replacement period, road occupation of erected scaffold, etc., and perfects the rigid protection difficult to realize the bidirectional protection of the bridge pier, vehicle and personnel.

[0025] 2. The device is composed of the anti-collision sheet of ultra-high performance concrete and rubber, which can play the role of consuming impact energy and buffering; at the same time, it provides greater stiffness and strength to protect the bridge pier, realizes the bidirectional protection of the vehicle and the bridge pier, can avoid the serious impact damage of the bridge pier and reduce the damage of the vehicle.

[0026] 3. The device adopts the suspension type assembly anti-collision sheet, avoids the erection of scaffold, modular assembly, simple construction, and short repair replacement time. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is the overall structural diagram of the present application;

[0028] Figure 2 is the structure schematic diagram of the anti-collision sheet of the present application;

[0029] Figure 3 is the connection schematic diagram of the steel wire rope and the bridge pier of the present application;

[0030] Figure 4 is the structure schematic diagram of the connector of the present application;

[0031] Figure 5 is the structure schematic diagram of the base of the present application;

[0032] Figure 6 is the construction flow chart of the present application;

[0033] In the figure: 1-pier 10-steel wire rope 21-rubber sheet 22-ultra-high performance concrete sheet 221-L-shaped steel groove 30-base 31-sleeve 32-strut 33-base 40-connector 41-threaded sleeve 42-threaded rod 43-nut part. DETAILED DESCRIPTION

[0034] In order to make the above features and advantages of the present application more obvious and easy to understand, the following embodiments are specifically described, and the detailed description is as follows with reference to the accompanying drawings, but the present application is not limited thereto.

[0035] REFERENCE Figures 1 to 6

[0036] A conveniently replaceable bridge pier anti-collision device comprises two coils of steel wire rope 10 installed around the upper and lower portions of the anti-collision area of ​​a bridge pier 1. A tightly packed anti-collision sheet 20 is arranged circumferentially around the outer portion of the anti-collision area. The anti-collision sheet consists of an outer rubber sheet 21 and an inner ultra-high performance concrete sheet 22. The rubber sheet dissipates impact energy and acts as a buffer, while the ultra-high performance concrete sheet provides greater rigidity and strength to protect the pier from damage. The upper and lower inner surfaces of the ultra-high performance concrete sheet are hooked onto corresponding steel wire ropes, facilitating assembly and disassembly.

[0037] In this embodiment, L-shaped steel channels 221 for inserting steel cables are provided on both the upper and lower portions of the inner surface of the ultra-high performance concrete sheet. These channels provide for suspended installation and reinforce the concave corners. A steel mesh is incorporated into the ultra-high performance concrete sheet to enhance the concrete's ductility and impact resistance. The rubber sheet is bonded to the outer surface of the ultra-high performance concrete sheet using SiKa32LP adhesive.

[0038] In this embodiment, the steel wire rope is evenly fixed with five bases 30 connected to the anti-collision parts of the bridge pier along the circumferential direction, the angle between two adjacent bases is 72°, and the two ends of the steel wire rope are connected via a connector 40.

[0039] In this embodiment, the connector includes a threaded sleeve 41 rotatably connected to one end of the wire rope. The other end of the wire rope is rotatably connected to a threaded rod 42 for threaded engagement with the threaded sleeve. Both the threaded sleeve and the threaded rod are provided with a nut portion 43 at the end near the wire rope, which drives the corresponding threaded sleeve and threaded rod to rotate. The connector not only connects the two ends of the wire rope, but also adjusts the preload of the wire rope by rotating the nut portion, ensuring that the anti-collision plate suspended by the wire rope does not slip.

[0040] In this embodiment, the base includes a sleeve 31 for fitting over a steel wire rope, which slides on the sleeve. A support rod 32, embedded in the pier using drilled rebar, is fixed to the sleeve. The support rod is bonded to a hole in the pier using strong glue. A base 33 is fitted over the support rod to increase the load-bearing area. The bottom surface of the base is bonded to the pier using strong glue.

[0041] A construction method for a conveniently replaceable bridge pier anti-collision device, comprising the following steps:

[0042] (1) Put five bases on each of the two steel ropes and wrap them around the bridge pier. Connect the two ends of the steel ropes with connectors.

[0043] (2) Drill five holes evenly along the circumference of the anti-collision area of ​​the bridge pier, with the angle between the two holes being 72°. Put the support rods on the base and insert them into the holes of the bridge pier. Apply strong glue inside the holes and on the bottom surface of the base.

[0044] (3) After the super glue solidifies, rotate the connector to apply pre-tightening force;

[0045] (4) Prefabricate several equally divided rubber sheets and ultra-high performance concrete sheets according to the size of the bridge piers; L-shaped steel grooves are embedded in the upper and lower inner surfaces of the ultra-high performance concrete sheets before pouring. After the ultra-high performance concrete sheets are cast and formed, they are bonded to the rubber sheets with SiKa32LP adhesive to form anti-collision sheets;

[0046] (5) Hang the anti-collision plate on the wire rope;

[0047] (6) After assembly, use sealant to fill the gaps between the anti-collision plates and between the anti-collision plates and the bridge piers; improve the durability and service life of the internal steel wire ropes and connectors.

[0048] (7) When a collision occurs on the bridge pier during service, part of the anti-collision plate is damaged. Simply replace the damaged anti-collision plate, hang a new one, and then repeat the above steps (5)-(6).

[0049] The above is only a preferred embodiment of the present invention. For ordinary technicians in this field, according to the teachings of the present invention, it does not require creative labor to design a conveniently replaceable bridge pier anti-collision device and construction method in different forms. Without departing from the principles and spirit of the present invention, all equal changes, modifications, replacements and variations made within the scope of the patent application of the present invention should be covered by the scope of the present invention.

Claims

1. A conveniently replaceable bridge pier anti-collision device, characterized in that: The invention comprises two circles of steel wire rope installed around the upper and lower parts of the anti-collision part of the bridge pier, and a circle of tightly arranged anti-collision sheets is arranged along the circumferential direction on the outer side of the anti-collision part of the bridge pier. The anti-collision sheet is composed of an outer rubber sheet and an inner ultra-high performance concrete sheet. The upper and lower parts of the inner surface of the ultra-high performance concrete sheet are both hung on the corresponding steel wire rope; the upper and lower parts of the inner surface of the ultra-high performance concrete sheet are both provided with L-shaped steel grooves for embedding steel wire ropes, a steel mesh is provided in the ultra-high performance concrete sheet, and the rubber sheet is adhered to the outer surface of the ultra-high performance concrete sheet; the steel wire rope is arranged along the circumferential direction Several bases connected to the anti-collision parts of the bridge pier are evenly distributed in the circumferential direction, and the two ends of the wire rope are connected via a connector; the connector includes a threaded sleeve rotatably connected to one end of the wire rope, and the other end of the wire rope is rotatably connected to a threaded rod for threaded connection with the threaded sleeve; the threaded sleeve and the threaded rod are both provided with a nut portion at one end close to the wire rope; the base includes a sleeve for sleeved on the wire rope, and a support rod embedded in the pier by drilling and planting reinforcement is fixed on the sleeve; a base is sleeved on the support rod, and the base is bonded to the pier.

2. The conveniently replaceable bridge pier anti-collision device according to claim 1, characterized in that: The rubber sheet is bonded to the ultra-high performance concrete sheet via an adhesive.

3. The conveniently replaceable bridge pier anti-collision device according to claim 1 is characterized in that: The anti-collision portion of the bridge pier is evenly fixed with five bases along the circumferential direction.

4. A construction method for a conveniently replaceable bridge pier anti-collision device according to claim 1, characterized in that: Here are the steps: (1) Put five bases on each of the two steel ropes and wrap them around the bridge pier. Connect the two ends of the steel ropes with connectors. (2) Drill five holes evenly along the circumference of the anti-collision part of the bridge pier. Put the support rods on the base and insert them into the holes of the bridge pier. Apply strong glue inside the holes and on the bottom surface of the base. (3) After the super glue solidifies, rotate the connector to apply pre-tightening force; (4) Prefabricate several equally divided rubber sheets and ultra-high performance concrete sheets according to the size of the bridge piers; before pouring, L-shaped steel grooves are embedded in the upper and lower inner surfaces of the ultra-high performance concrete sheets. After the ultra-high performance concrete sheets are cast and formed, they are bonded to the rubber sheets with an adhesive to form anti-collision sheets; (5) Hang the anti-collision plate on the wire rope; (6) After assembly, use sealant to fill the gaps between the anti-collision plates and between the anti-collision plates and the bridge piers; (7) When a collision occurs on the bridge pier during service, part of the anti-collision plate is damaged. Simply replace the damaged anti-collision plate, hang a new one, and then repeat the above steps (5)-(6).

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