CN211872617U

CN211872617U - Permanent isolation guardrail for urban bridge

Info

Publication number: CN211872617U
Application number: CN202020023195.2U
Authority: CN
Inventors: 谢尚英; 王朝伦; 孟祥勇; 胡亚龙; 熊威; 李春燕; 张胡芝; 易树海; 曾光虎; 陈凯; 夏东旭; 李奇辉; 夏宇; 甘岚
Original assignee: Sichuan Southwest Jiaoda Civil Engineering Design Co ltd
Current assignee: Sichuan Southwest Jiaoda Civil Engineering Design Co ltd
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2020-11-06
Anticipated expiration: 2030-01-07

Abstract

The permanent isolation guardrail for the urban bridge not only ensures the aesthetic property of the appearance structure of the bridge isolation facility, but also ensures the specific stress performance of the structure. This permanent isolation barrier includes that guardrail base, steel are established laterally the electric (ly) and the guardrail, and the steel is established the electric (ly) in the same direction as the bridge and is set up to the interval, and its lower extreme and guardrail base fixed connection, the guardrail of vertical interval setting are established the electric (ly) in the horizontal pipe and the steel and are established welded connection, and the guardrail base is connected as an organic wholely with the bridge structures.

Description

Permanent isolation guardrail for urban bridge

Technical Field

The utility model relates to a bridge, in particular to city bridge is with permanent isolation barrier.

Background

In urban roads, particularly main road sections, the phenomena of free transverse street crossing of pedestrians, free turning around of vehicles, lane driving by opposite directions and the like are common, so that a road traffic isolation guardrail or a green isolation belt is generally arranged on a road central isolation belt to prevent pedestrians from crossing the road, and to warn and force opposite motor vehicles to drive in different lanes, so that the road traffic can be ensured to be safe, smooth and orderly, and a certain anti-dazzle effect can be achieved. Isolation barrier generally adopts the movable in the urban road, and crashworthiness is lower, and the reason lies in that road traffic accident is less to road surface structure destructiveness, alright resume traffic after traffic accident handles generally.

Urban bridges are generally used for roads to cross natural or artificial barriers for building and passing vehicles and pedestrians, and road traffic accidents have great destructiveness to the urban bridges, so that the urban bridges can directly damage bearing structures and even damage surrounding buildings, vehicles and pedestrians. The green isolation belt generally needs continuous irrigation, and is difficult to realize on a bridge; and the width of the greening isolation belt is generally wider than that of the isolation guardrail, the width of the bridge deck needs to be increased, and the economy is poor, so that the permanent isolation guardrail is generally arranged on the urban bridge, particularly the bridge on the main road, and the enough anti-collision performance is ensured. Meanwhile, the isolation guardrail has certain influence on the landscape of the urban bridge, the form of the isolation guardrail is mainly concise, and the influence on the overall landscape of the bridge and the sense organ comfort of pedestrians is large due to the complexity. The general guardrail of isolation divide into rigid guardrail, semi-rigid guardrail, these three kinds of flexible guardrail, and rigid guardrail generally uses the poured concrete guardrail as main representative form, and semi-rigid guardrail generally uses the wave form guardrail as main representative form, and flexible guardrail generally uses the cable guardrail as main representative form. The guardrails are generally divided into B-grade guardrails, A-grade guardrails, SB-grade guardrails, SA-grade guardrails, SS-grade guardrails and the like according to different anti-collision capabilities. The guardrail structure form and the anticollision grade are generally selected according to the road grade and the traffic condition.

Concrete wall formula guardrail, guardrail are formed by concrete placement, and inside is furnished with ordinary reinforcing bar, can form permanent whole with pre-buried pedestal connection on the bridge construction, also can adopt prefabricated finished product component, places in bridge top surface traffic distribution area department. The concrete structure has the defects that the concrete structure has large mass, and the permanent load of a bridge deck, particularly a steel structure bridge, is further increased invisibly; the concrete structure guardrail is generally poured by adopting a wooden template, the surface is rough, and particularly, the landscape performance is poor due to the on-site pouring of components; the concrete is easy to crack due to shrinkage and creep action, is inconvenient to maintain and further influences the landscape.

The municipal movable guardrail is generally made of carbon steel, plastic steel and other steel materials, and the types of the movable guardrail comprise a fence type isolation guardrail, a fence plate type isolation guardrail, a lattice type isolation guardrail and the like. The anti-collision device has the defects that the anti-collision grade is low, the anti-collision device is easy to fall in sheets when being rubbed and bumped by vehicles, even more than hundreds of meters, the anti-collision device seriously interferes the opposite traffic and is easy to cause traffic jam; the structure is lighter and easy to be considered as moving or destroying.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a permanent isolation barrier is used to city bridge has both ensured bridge isolation facility outward appearance structure's aesthetic property, can ensure the specific atress performance of structure again.

The utility model provides a technical scheme that its technical problem adopted as follows:

the utility model discloses a city bridge is with permanent isolation barrier, characterized by: including guardrail base, steel and the guardrail violently pipe, the steel is established the electrical leakage in the same direction as the bridge to the interval setting, and its lower extreme and guardrail base fixed connection, the guardrail of vertical interval setting is violently managed and is established welding connection with the steel, and the guardrail base is connected as an organic wholely with bridge structures.

The utility model has the advantages that the steel upright posts and the guardrail transverse pipes are welded and connected, and are connected with the bridge structure into a whole through the guardrail base, so that the flexibility is strong, and the standardized finished product design of the component size can be carried out according to different traffic grades of the urban bridge; the main components are manufactured in a factory, the weight is light, the main components are transported to a site and hoisted in place and then welded with the main beam into a whole, the construction site is not occupied, and the construction period can be greatly saved; the surface of the isolation guardrail is generally subjected to hot galvanizing and plastic spraying, the decoration colors are various, and the effects of corrosion resistance and attractiveness can be achieved simultaneously. The appearance structure of the bridge isolation facility is ensured, the specific stress performance of the structure is ensured, and compared with the existing scheme, the bridge isolation facility has incomparable advantages in application, safety, economy and attractiveness.

Drawings

The specification includes the following five figures:

FIG. 1 is a schematic structural view of the permanent isolation fence for urban bridges of the present invention;

FIG. 2 is a cross-sectional view of embodiment 1 of the permanent isolation barrier for urban bridges according to the present invention;

FIG. 3 is a cross-sectional view of embodiment 1 of the permanent isolation barrier for urban bridges according to the present invention;

FIG. 4 is a schematic structural view of the permanent isolation fence for urban bridges of the present invention;

FIG. 5 is a cross-sectional view of the expansion joint of the permanent isolation guardrail for the urban bridge.

The figures show the components and corresponding references: the guardrail comprises a guardrail base 10, steel (magnetic) 20, a guardrail transverse tube 30, a sleeve 31, a protective cover 32, a steel structure base 11, a stiffening plate 12, a concrete base 13, an anchor bar 14, a pre-embedded steel plate 15, a bridge steel box beam 41, a pavement layer 42, a bridge concrete beam 43 and an expansion joint K.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Referring to fig. 1, the utility model discloses a permanent isolation barrier for urban bridge roof beam includes guardrail base 10, steel (electrical) 20 and guardrail violently pipe 30, and steel (electrical) 20 is in the same direction as the bridge and is set up to the interval, its lower extreme and guardrail base 10 fixed connection, and the guardrail violently pipe 30 and the steel (electrical) 20 welded connection that vertical interval set up are connected as an organic wholely with the bridge structures. The steel upright posts 20 and the guardrail transverse tubes 30 are welded and connected, and are connected with the bridge structure into a whole through the guardrail bases, so that the flexibility is high, and the standardized finished product design of the component size can be carried out according to different traffic grades of the urban bridge. The main components are manufactured in factories, the weight is light, the main components are transported to a site to be hoisted in place and then welded with the main beam into a whole, the construction site is not occupied, and the construction period can be greatly saved. The surface of the isolation guardrail is generally subjected to hot galvanizing and plastic spraying, the decoration colors are various, and the effects of corrosion resistance and attractiveness can be achieved simultaneously. The appearance structure of the bridge isolation facility is ensured, the specific stress performance of the structure is ensured, and compared with the existing scheme, the bridge isolation facility has incomparable advantages in application, safety, economy and attractiveness.

Referring to fig. 4 and 5, the permanent isolation guardrail is provided with a telescopic gap K at a certain distance along the bridge direction, and a sleeve 31 and a shield 32 spanning the telescopic gap K are arranged. The diameter of the sleeve 31 is smaller than that of the guardrail transverse tube 30, one end of the sleeve 31 is fixedly connected with the guardrail transverse tube 30 on one side, and the other end of the sleeve 31 extends into the guardrail transverse tube 30 on the other side. The protective cover 32 spans the telescopic gap K, one end of the protective cover is fixedly arranged on the guardrail base 10 at one side, and the other end of the protective cover is lapped with the guardrail base 10 at the other side.

Referring to embodiment 1 shown in fig. 2, the guardrail base 10 is a steel structure base 11, and the steel structure base 11 is welded with the bridge steel box girder 41. Referring to embodiment 3 shown in fig. 3, the guardrail housing 10 is a cast-in-place concrete base 13 integrally connected to the bridge concrete beam 43, and the steel casing 20 is fixedly connected to the cast-in-place concrete base 13 through the embedded steel plates 15 and the anchor bars 14. Referring to fig. 2 and 3, the steel (20) is welded using a steel plate, and the top surface is an arc-shaped surface.

The above is only used for illustrating the principles of the permanent isolation barrier for urban bridges of the present invention, and it is not intended to limit the present invention to the specific structure and application range shown and described, so all the corresponding modifications and equivalents that may be utilized all belong to the patent scope applied by the present invention.

Claims

1. City bridge is with permanent isolation barrier, characterized by: the permanent isolation guardrail comprises a guardrail base (10), steel (20) and a guardrail transverse tube (30), wherein the steel (20) is arranged at intervals in the bridge direction, the lower end of the steel (20) is fixedly connected with the guardrail base (10), the guardrail transverse tube (30) arranged at intervals in the bridge direction is welded with the steel (20), and the guardrail base (10) is connected with the bridge structure into a whole.

2. The permanent isolation fence for urban bridges of claim 1, which is characterized in that: the permanent isolation guardrail is provided with telescopic broken joints (K) at certain intervals along the bridge direction, and is provided with a sleeve (31) and a protective cover (32) which span the telescopic broken joints (K); the diameter of the sleeve (31) is smaller than that of the guardrail transverse tube (30), one end of the sleeve (31) is fixedly connected with the guardrail transverse tube (30) on one side, and the other end of the sleeve extends into the guardrail transverse tube (30) on the other side; the protective cover (32) spans the telescopic broken seam (K), one end of the protective cover is fixedly arranged on the guardrail base (10) at one side, and the other end of the protective cover is lapped with the guardrail base (10) at the other side.

3. The permanent isolation barrier for urban bridges according to claim 1 or 2, wherein: the guardrail base (10) is a steel structure base (11), and the steel structure base (11) is welded with the bridge steel box girder (41).

4. The permanent isolation barrier for urban bridges according to claim 1 or 2, wherein: the guardrail base (10) is connected cast in situ concrete base (13) as an organic whole with bridge concrete roof beam (43), and the steel (20) forms fixed connection through pre-buried steel sheet (15) and anchor (14) and cast in situ concrete base (13).

5. The permanent isolation fence for urban bridges of claim 1, which is characterized in that: the steel is welded (20) by steel plates, and the top surface is an arc-shaped surface.