CN218521682U - Guardrail system is strengthened to road bridge changeover portion foamed aluminum direction formula - Google Patents

Abstract

The utility model discloses a road and bridge transition section foamed aluminum guide type reinforced guardrail system, which consists of a concrete guardrail, a support column, a corrugated plate, a foamed aluminum buffer block, a foamed aluminum guide wheel and a sliding limiting plate; the corrugated plate is arranged on the supporting column, a foamed aluminum buffer block is arranged between the supporting column and the corrugated plate, and the foamed aluminum buffer block collapses to absorb impact force during impact; the foamed aluminum corrugated plate is adhered to the surface of the corrugated plate, and the end part of the corrugated plate is adhered with a foamed aluminum end plate, so that the shock resistance of the corrugated plate is improved; the foamed aluminum guide wheels are installed on support columns of the road and bridge transition sections, and the support columns are arranged in the road and bridge transition sections in an encrypted manner; the corrugated plates and the foamed aluminum guide wheels are arranged in a vertically staggered manner, and the foamed aluminum guide wheels are flush with the foamed aluminum corrugated plates, so that the guide effect of the foamed aluminum guide wheels on the vehicle is improved; the limiting plate that slides is fixed on the concrete barrier, and corrugated plate and limiting plate plug-in connection slide, corrugated plate can freely stretch out and draw back the aversion relatively the concrete barrier.

Description

Guardrail system is strengthened to way bridge changeover portion foamed aluminum direction formula

Technical Field

The utility model relates to a road bridge changeover portion guardrail construction especially relates to a guardrail system is strengthened to road bridge changeover portion foamed aluminum direction formula.

Background

The existing expressway usually adopts semi-rigid corrugated steel guardrails, but the bridge usually adopts concrete guardrails, and because the rigidity difference of the two guardrails is large, if the joint of the road and the bridge is collided, serious accidents are easily caused. Patent CN 112482215A provides a bridgehead transition section concrete anticollision barrier and wave form steel guardrail connection structure and construction method, and this method can promote the joint strength of two kinds of guardrails of linking section effectively, guarantees the reliability of structure when the vehicle strikes. However, due to the effects of thermal expansion and cold contraction, the main beam is easy to generate large expansion deformation, and large internal stress is easy to generate at the joint, so that the structure is damaged. Therefore, it is not suitable to use rigid connection directly at the joint of two guardrails.

The corrugated steel guardrail is usually fixed on the supporting column by adopting bolts, and when the impact occurs, the corrugated steel guardrail directly absorbs the impact force from the vehicle and transmits the impact force into the foundation through the supporting column. Because the overall rigidity of the corrugated steel guardrail is low, the corrugated steel guardrail can be damaged by slight impact. The patent CN 215888029U provides a foamed aluminum anti-block corrugated beam guardrail, wherein a foamed aluminum anti-block is arranged between a corrugated guardrail and a support column, and the foamed aluminum anti-block is collapsed and deformed during collision to absorb impact force, so as to protect vehicles and reduce damage to the corrugated guardrail. However, in practice, it is found that the foamed aluminum block does not fully exhibit the energy absorbing properties of the foamed aluminum material, and the application effect is not good.

In addition, for the impact force when reducing the vehicle and striking the guardrail, engineering technical personnel have researched and developed drum-type anti-collision guardrail, and when the vehicle struck drum-type anti-collision guardrail, the cylinder passed through rotatory guide vehicle and moved forward to impact force when reducing the striking. However, because the diameter of the rollers is generally large, a large included angle tends to exist between adjacent rollers. Thus, the rollers can guide the vehicle forward only if the vehicle impacts approximately parallel to the guardrail.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a problem that road bridge changeover portion anticollision barrier exists has proposed a road bridge changeover portion foamed aluminum direction formula and has strengthened the guardrail system. In order to achieve the purpose, the following technical scheme is adopted.

The utility model relates to a road and bridge transition section foamed aluminum guide type reinforced guardrail system, which consists of a concrete guardrail, a support column, a corrugated plate, a foamed aluminum buffer block, a foamed aluminum guide wheel and a sliding limiting plate; the foamed aluminum buffer block is positioned between the corrugated plate and the support column, the first bolt penetrates through the corrugated plate, the foamed aluminum buffer block and bolt holes in the support column to fix the corrugated plate on the support column, and when collision occurs, the foamed aluminum buffer block collapses to absorb the vehicle impact force and protect the vehicle and a guardrail structure; the foamed aluminum corrugated plate is adhered to the surface of the corrugated plate by structural adhesive, the end part of the corrugated plate is adhered with a foamed aluminum end plate, and the foamed aluminum corrugated plate is adhered to the surface of the corrugated plate to absorb impact force during collision, so that damages to vehicles and the corrugated plate are reduced; the foamed aluminum guide wheels are fixedly arranged on the support columns of the road and bridge transition section, and the support columns are arranged in the road and bridge transition section in an encrypted manner; the corrugated plates and the foamed aluminum guide wheels are arranged in a vertically staggered mode, and the foamed aluminum guide wheels are flush with the foamed aluminum corrugated plates, so that a vehicle is prevented from being directly punched into a gap between every two adjacent foamed aluminum guide wheels, and the guide effect of the foamed aluminum guide wheels on the vehicle is improved; the sliding limiting plate is fixed on the concrete guardrail through the second bolt, the corrugated plate is connected with the sliding limiting plate in an inserting mode, and the corrugated plate can freely stretch out and draw back longitudinally with the concrete guardrail.

Preferably, the foamed aluminum supporting cushion blocks are pasted on the sliding limiting plates and are tightly attached to the back faces of the corrugated plates, and the buffering capacity of the joints of the corrugated plates and the concrete guardrails is improved by the aid of the foamed aluminum supporting cushion blocks, so that damage caused by vehicle collision is reduced.

Preferably, the side of slip limiting plate is equipped with spacing rib, and the edge of wave form board is hugged closely to spacing rib, avoids the wave form board to drop in the slip limiting plate, does not influence the wave form board simultaneously and vertically slides along the slip limiting plate.

Preferably, a steel sleeve is arranged on the foamed aluminum guide wheel, the steel sleeve and the axis of the foamed aluminum guide wheel are on the same straight line, a rotating bearing is arranged between the steel sleeve and the foamed aluminum guide wheel, and locking screws are arranged at the upper end and the lower end of the steel sleeve; the steel sleeve is sleeved on the support column, the locking screw abuts against the surface of the support column, and the steel sleeve is fixed on the support column through the locking screw, so that the foamed aluminum guide wheel is quickly installed and fixed, and meanwhile, the maintenance and replacement operation of the foamed aluminum guide wheel is facilitated.

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

1. set up the foamed aluminum buffer block between wave plate and support column, foamed aluminum takes place to crumple and absorb the impact of vehicle when striking, and the foamed aluminum buffer block is the tubular structure, and full play foamed aluminum material's energy-absorbing characteristic promotes the guard effect.

2. The corrugated steel guardrail and the concrete guardrail are connected in an inserted mode, the corrugated plate can freely stretch and shift relative to the concrete guardrail, and temperature stress caused by rigid connection is avoided.

3. The foamed aluminum corrugated plate is adhered to the surface of the corrugated plate, so that the shock resistance of the corrugated plate is improved, and the damage to vehicles and the corrugated plate is reduced.

4. Road bridge links up the section and sets up the leading wheel, and the guide vehicle forward motion, the leading wheel is the foamed aluminum material, and impact force when absorbing the vehicle striking further reduces the damage of vehicle and guardrail.

5. The foamed aluminum guide wheels are flush with the foamed aluminum corrugated plate, so that the vehicle is prevented from directly rushing into a gap between every two adjacent foamed aluminum guide wheels, and the guide effect of the foamed aluminum guide wheels on the vehicle is improved.

Drawings

FIG. 1 is a schematic three-dimensional structure diagram of a road and bridge transition section foamed aluminum guide type reinforced guardrail system;

FIG. 2 isbase:Sub>A schematic view ofbase:Sub>A fixing structure of the corrugated plate and the supporting posts (section A-A in FIG. 1);

FIG. 3 is a schematic view of a three-dimensional structure of a corrugated plate fixed to a support column;

FIG. 4 is a schematic view of a fixing structure of the corrugated plate, the guide wheel and the support column (section B-B in FIG. 1);

FIG. 5 is a schematic view of a three-dimensional structure of a guide wheel fixed to a support column;

FIG. 6 is a schematic view of the sliding connection of the corrugated plate to the concrete barrier (section C-C in FIG. 1);

fig. 7 is a schematic diagram of a three-dimensional structure of the sliding connection of the corrugated guardrail plate and the concrete guardrail.

The figure is marked with: 11-concrete guardrail, 12-support column, 13-corrugated plate, 21-foamed aluminum corrugated plate, 22-foamed aluminum end plate, 23-foamed aluminum buffer block, 24-bolt I, 31-foamed aluminum guide wheel, 32-steel sleeve, 33-rotating bearing, 34-locking screw rod, 41-sliding limit plate, 42-limit rib, 43-foamed aluminum support cushion block and 44-bolt II.

Detailed Description

In order to deepen understanding of the present invention, the following embodiments of the present invention will be described in detail with reference to fig. 1 to 7, and the following embodiments are implemented on the premise of the technical solution of the present invention, and detailed embodiments are given, but the scope of protection of the present invention is not limited to the following embodiments.

As shown in the attached drawing 1, the utility model relates to a guardrail system is strengthened to way bridge changeover portion foamed aluminum direction formula comprises concrete barrier 11, support column 12, wave plate 13, foamed aluminum wave plate 21, foamed aluminum buffer block 23, foamed aluminum leading wheel 31 and slip limiting plate 41 etc..

As shown in fig. 2 and 3, the foamed aluminum buffer block 23 is positioned between the corrugated plate 13 and the support column 12, the first bolt 24 penetrates through the corrugated plate 13, the foamed aluminum buffer block 23 and bolt holes on the support column 12 to fix the corrugated plate 13 on the support column 12, when collision occurs, the foamed aluminum buffer block 23 is collapsed to absorb the collision force of the vehicle, the vehicle and a guardrail structure are protected, and meanwhile, the foamed aluminum buffer block 23 is simple in structure and convenient for later maintenance and replacement; the foamed aluminum corrugated plate 21 is adhered to the surface of the corrugated plate 13 by structural adhesive, the foamed aluminum end plate 22 is adhered to the end part of the corrugated plate 13, and the foamed aluminum corrugated plate 21 is adhered to the surface of the corrugated plate 13 to absorb the impact force during collision, so that the damage of the vehicle and the corrugated plate 13 is reduced.

As shown in fig. 1, the foamed aluminum guide wheel 31 is fixedly installed on the support column 12 of the road and bridge transition section, and the support column 12 is arranged in the road and bridge transition section in an encrypted manner; the corrugated plate 13 and the foamed aluminum guide wheels 31 are arranged in a vertically staggered mode, and the foamed aluminum guide wheels 31 are flush with the foamed aluminum corrugated plate 21, so that a vehicle is prevented from directly rushing into a gap between every two adjacent foamed aluminum guide wheels 31, and the guide effect of the foamed aluminum guide wheels 31 on the vehicle is improved.

As shown in fig. 4 and 5, a steel sleeve 32 is arranged on the foamed aluminum guide wheel 31, the steel sleeve 32 and the axis of the foamed aluminum guide wheel 31 are on the same line, a rotary bearing 33 is arranged between the steel sleeve 32 and the foamed aluminum guide wheel 31, and locking screws 34 are arranged at the upper end and the lower end of the steel sleeve 32; the steel sleeve 32 is sleeved on the support column 12, the locking screw 34 abuts against the surface of the support column 12, and the steel sleeve 32 is fixed on the support column 12 through the locking screw 34, so that the foamed aluminum guide wheel 31 is quickly installed and fixed, and meanwhile, the maintenance and replacement operation of the foamed aluminum guide wheel 31 is facilitated.

As shown in fig. 6 and 7, the sliding position limiting plate 41 is fixed on the concrete guardrail 11 through a second bolt 44, the corrugated plate 13 is connected with the sliding position limiting plate 41 in an inserting manner, and the corrugated plate 13 and the concrete guardrail 11 can freely and longitudinally stretch. The foamed aluminum supporting cushion blocks 43 are adhered to the sliding limiting plates 41, the foamed aluminum supporting cushion blocks 43 are attached to the back faces of the corrugated plates 13, and the foamed aluminum supporting cushion blocks 43 are arranged, so that the buffering capacity of the joints of the corrugated plates 13 and the concrete guardrails 11 is improved, and the damage caused by vehicle collision is reduced. The side edge of the sliding limiting plate 41 is provided with the limiting rib 42, and the limiting rib 42 is tightly attached to the edge of the corrugated plate 13, so that the corrugated plate 13 is prevented from falling off from the sliding limiting plate 41, and the longitudinal sliding of the corrugated plate 13 along the sliding limiting plate 41 is not influenced.

The present invention has been described in detail with reference to the embodiments, but the above description is only for the purpose of describing the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims (4)

1. A road and bridge transition section foamed aluminum guide type reinforced guardrail system is characterized by comprising a concrete guardrail (11), support columns (12), corrugated plates (13), foamed aluminum corrugated plates (21), foamed aluminum buffer blocks (23), foamed aluminum guide wheels (31) and sliding limiting plates (41);

the foamed aluminum buffer block (23) is positioned between the corrugated plate (13) and the supporting column (12), and the first bolt (24) penetrates through bolt holes in the corrugated plate (13), the foamed aluminum buffer block (23) and the supporting column (12) to fix the corrugated plate (13) on the supporting column (12);

the foamed aluminum corrugated plate (21) is adhered to the surface of the corrugated plate (13) by structural adhesive, and a foamed aluminum end plate (22) is adhered to the end part of the corrugated plate (13);

the foamed aluminum guide wheel (31) is fixedly arranged on a support column (12) of the road and bridge transition section, and the support column (12) is arranged in the road and bridge transition section in an encrypted manner; the corrugated plate (13) and the foamed aluminum guide wheel (31) are arranged in a vertically staggered manner, and the foamed aluminum guide wheel (31) is flush with the foamed aluminum corrugated plate (21);

the sliding limiting plate (41) is fixed on the concrete guardrail (11) through a second bolt (44), and the corrugated plate (13) is connected with the sliding limiting plate (41) in an inserted mode.

2. The aluminum foam guiding type reinforced guardrail system for the road and bridge transition section is characterized in that an aluminum foam supporting cushion block (43) is adhered to the sliding limit plate (41), and the aluminum foam supporting cushion block (43) is attached to the back surface of the corrugated plate (13).

3. The aluminum foam guide type reinforced guardrail system for the road and bridge transition section of claim 1, wherein the side edge of the sliding limit plate (41) is provided with a limit rib (42), and the limit rib (42) is tightly attached to the edge of the corrugated plate (13).

4. The foamed aluminum guide type reinforced guardrail system for the road and bridge transition section according to claim 1, characterized in that a steel sleeve (32) is arranged on the foamed aluminum guide wheel (31), the steel sleeve (32) and the foamed aluminum guide wheel (31) are on the same straight line, a rotating bearing (33) is arranged between the steel sleeve (32) and the foamed aluminum guide wheel (31), and locking screws (34) are arranged at the upper end and the lower end of the steel sleeve (32); the steel sleeve (32) is sleeved on the supporting column (12), and the locking screw (34) abuts against the surface of the supporting column (12).

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