CN216864818U

CN216864818U - Dual energy dissipation rail guard of bridge floor

Info

Publication number: CN216864818U
Application number: CN202122786669.6U
Authority: CN
Inventors: 向中富; 成锐; 黎人亮; 何旭东; 黄海东; 刘涛
Original assignee: Chongqing Jiaotong University
Current assignee: Chongqing Jiaotong University
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-07-01
Anticipated expiration: 2031-11-15

Abstract

The utility model discloses a bridge floor dual energy dissipation protective guard which comprises a steel railing post and a railing post foot hinged plate and is characterized in that the railing post foot hinged plate and a railing post foot energy dissipation block are fixedly connected with the bottom of the steel railing post, a pin shaft is rotatably connected in the railing post foot hinged plate, a railing post surface FRP energy dissipation pipe is fixedly connected to the top of the steel railing post, and a connecting plate, steel upper, middle and lower handrails, and upper, middle and lower handrail FRP energy dissipation pipes are fixedly connected with the outer part of the railing post surface FRP energy dissipation pipe. The combined protective guard has the advantages that double energy dissipation is adopted structurally, the combined protective guard of the steel structure, the FRP energy dissipation pipe and the rubber block or the spring energy dissipation block is adopted, the combined protective guard is convenient to install, maintain and replace, the protective guard can play an effective protective role when a vehicle collides, and the protective guard does not damage the protective guard, the bridge structure and the vehicle.

Description

Dual energy dissipation rail guard of bridge floor

Technical Field

The utility model relates to the technical field of bridge floor anti-collision facilities, in particular to a bridge floor dual energy dissipation protective guard.

Background

The bridge deck guard rail is an important facility for guaranteeing the driving safety of the bridge deck. At present, bridge deck guard rails have various forms, including reinforced concrete guard rails, steel-concrete combined guard rails and the like. The connection between the guard rails and the bridge structure (steel structure, concrete structure) is also in multiple modes due to the bridge structure form.

However, in view of the long-term application, the bridge deck guard rail is not convenient to install, is not convenient to maintain and replace, has an insufficient effect of resisting vehicle impact, is too rigid and strong, and causes the problems that the vehicle is damaged too much or the bridge structure is damaged when the vehicle impacts, and the like, and a new guard rail is needed.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

The utility model aims to solve the problems that in the prior art, a bridge deck guard rail is not convenient to mount, not convenient to maintain and replace and not obvious enough in effect of resisting vehicle impact, and provides a bridge deck dual energy dissipation guard rail.

2. Technical scheme

In order to achieve the purpose, the utility model adopts the following technical scheme:

the dual energy dissipation protective guard for the bridge floor comprises a steel railing post and a railing post foot hinged plate, and is characterized in that the railing post foot hinged plate and a railing post foot energy dissipation block are fixedly connected with the bottom of the steel railing post, a pin shaft is rotatably connected in the railing post foot hinged plate, a railing post table FRP energy dissipation pipe is fixedly connected to the top of the steel railing post, and an upper handrail, a middle handrail, a lower handrail, an upper handrail FRP energy dissipation pipe, a middle handrail and a lower handrail FRP energy dissipation pipe are fixedly connected with the outside of the railing post table FRP energy dissipation pipe.

Preferably, the steel railing post is connected with the bridge structure through a railing post foot hinged plate and a pin shaft, and connecting plates for connecting the steel upper handrail, the steel middle handrail and the steel lower handrail through bolts are welded on two opposite side surfaces of the longitudinal bridge of the railing post.

Preferably, the last articulated slab of railing column foot articulated slab welds in the railing column bottom, and lower articulated slab welds on bridge structures.

Preferably, a distance which is the same as the installation compression amount of the railing column foot energy dissipation block is reserved between the pin shaft and the bridge structure before installation.

Preferably, after the energy dissipation block of the column foot is installed in place, the steel column foot is installed by applying a certain pressure to the column foot to complete the installation of the hinged plate of the column foot, and the magnitude of the applied pressure depends on the prepressing amount of the energy dissipation block.

Preferably, the wall thickness of the FRP energy dissipation pipes of the balustrade surface and the FRP energy dissipation pipes of the upper handrail, the middle handrail and the lower handrail depends on the requirement of second energy dissipation amount.

Preferably, the railing post foot energy dissipation block adopts a rubber block or a spring, and the height of the rubber block or the spring is higher than the elastic compression amount and depends on the requirement of a second energy dissipation amount.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages that:

according to the utility model, by adopting dual energy dissipation in the structure and adopting the combined protective guard of the steel structure, the FRP energy dissipation pipe and the rubber block or the spring energy dissipation block, the installation, the maintenance and the replacement of the combined protective guard are convenient, and the protective guard can play an effective protective role when a vehicle is impacted, namely the protective guard is not damaged, a bridge structure is not damaged, and the vehicle is not damaged.

Drawings

Fig. 1 is a schematic front view of a dual energy dissipation guard rail for a bridge deck according to the present invention;

fig. 2 is a schematic side view of a dual energy dissipation guard rail of a bridge deck according to the present invention;

FIG. 3 is a schematic view of the structure in the direction B-B in FIG. 1;

FIG. 4 is a schematic view of the structure in the direction C-C in FIG. 2;

FIG. 5 is a schematic view of the structure at D in FIG. 2;

FIG. 6 is a schematic cross-sectional view taken at D1-D1 in FIG. 5;

FIG. 7 is a schematic cross-sectional view taken at D2-D2 in FIG. 5;

FIG. 8 is a schematic cross-sectional view taken at D3-D3 in FIG. 5;

fig. 9 is a schematic cross-sectional view at E in fig. 2.

In the figure: 1-steel railing post; 2-railing column base hinged plate; 3-a pin shaft; 4-connecting a plate; 5-steel upper, middle and lower armrests; 6-railing column foot energy dissipation block; 7-FRP energy dissipation pipes of the railing post surface; 8-FRP energy dissipation pipes for the upper, middle and lower armrests.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1:

referring to fig. 1-9, a bridge deck dual energy dissipation protective guard comprises a steel railing post 1 and a railing post foot hinged plate 2, wherein an upper hinged plate of the railing post foot hinged plate 2 is welded at the bottom of the railing post, a lower hinged plate is welded on a bridge structure, the railing post foot hinged plate 2 and a railing post foot energy dissipation block 6 are both fixedly connected with the bottom of the steel railing post 1, a pin shaft 3 is rotatably connected in the railing post foot hinged plate 2, and a distance equal to the installation compression amount of the railing post foot energy dissipation block 6 is reserved between the pin shaft 3 and the bridge structure before installation;

in the utility model, a steel railing post 1 is connected with a bridge structure through a railing post foot hinged plate 2 and a pin shaft 3, and connecting plates 4 for connecting steel upper, middle and lower handrails 5 through bolts are welded on two opposite side surfaces of a longitudinal bridge of the railing post;

in the utility model, the top of a steel railing column 1 is fixedly connected with a railing column surface FRP energy dissipation pipe 7, and a connecting plate 4, steel upper, middle and lower handrails 5, and upper, middle and lower handrail FRP energy dissipation pipes 8 are all fixedly connected with the outside of the railing column surface FRP energy dissipation pipe 7;

in the utility model, after a rod foot energy dissipation block 6 of a steel railing column 1 is installed in place, a certain pressure is applied to the railing column to complete the installation of a hinging plate 2 of the railing column foot, the magnitude of the applied pressure depends on the prepressing amount of the rod foot energy dissipation block 6, and the wall thicknesses of an FRP (fiber reinforce Plastic) energy dissipation pipe 7 and FRP energy dissipation pipes 8 of an upper handrail, a middle handrail and a lower handrail depend on the requirements of a second heavy energy dissipation amount according to the shapes of the wall thicknesses;

in the utility model, the railing column foot energy dissipation block 6 adopts a rubber block or a spring, and the height of the rubber block or the spring is higher than the elastic compression amount and depends on the requirement of the second energy dissipation amount.

The utility model discloses a mounting method of a bridge deck double energy dissipation protective guard, which comprises the following steps:

step 1: firstly, mounting steel upper, middle and lower armrests 5 on a steel railing post 1 through a connecting plate 4;

step 2: then arranging a railing post foot energy dissipation block 6 between the steel railing post 1 and the bridge structure, applying a certain vertical pressure to the steel railing post 1, and installing the pin shaft 3 in place after the railing post foot energy dissipation block 6 is subjected to required compression deformation;

and step 3: and then the energy dissipation pipes 7 of the railing column surface and the energy dissipation pipes 8 of the upper handrail surface, the middle handrail surface and the lower handrail surface are bonded on the steel railing column 1 and the steel upper handrail, the middle handrail surface and the lower handrail surface 5.

In the utility model, the energy dissipation pipes 7 of the railing column surface and the energy dissipation pipes 8 of the upper handrail surface, the middle handrail surface and the lower handrail surface can be glued before the steel railing column 1 and the steel upper handrail 5, or can be glued after the steel railing column 1 and the steel upper handrail 5, the middle handrail 5 are mounted.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a dual energy dissipation rail guard of bridge floor, includes steel railing post (1) and railing post foot articulated slab (2), its characterized in that, railing post foot articulated slab (2), railing post foot energy dissipation piece (6) all with the bottom fixed connection of steel railing post (1), railing post foot articulated slab (2) internal rotation is connected with round pin axle (3), the top fixed connection of steel railing post (1) has railing post table FRP energy dissipation pipe (7), railing post table FRP energy dissipation pipe (7) outside fixed connection have connecting plate (4), steel on, in, under handrail (5) and FRP energy dissipation pipe (8).

2. A bridge deck double energy dissipation protective guard according to claim 1, wherein the steel railing columns (1) are connected with the bridge structure through railing column foot hinged plates (2) and pin shafts (3), and connecting plates (4) for connecting upper, middle and lower steel handrails (5) through bolts are welded on two opposite side surfaces of the longitudinal bridge of the railing columns.

3. A bridge deck double energy dissipation guard rail according to claim 1, wherein the upper hinged plate of the hinged plate (2) of the railing post base is welded on the bottom of the railing post, and the lower hinged plate is welded on the bridge structure.

4. A bridge deck double energy dissipation guard rail according to claim 1, wherein a distance equal to the installation compression of the railing column foot energy dissipation block (6) is reserved between the pin shaft (3) and the bridge structure before installation.

5. A bridge deck dual energy dissipation guard rail according to claim 1, wherein the railing column foot energy dissipation blocks (6) are rubber blocks or springs.