Fixed steel clad composite bridge anti-collision facilities, new bridge protection devices, rubber fende

  Introduction to fixed steel clad composite bridge anti-collision facilities fixed steel clad composite bridge anti-collision facilities are composed of steel + composite shell, steel + composite or composite lattice web and high-performance closed hole energy absorbing materials
Compared with fixed composite bridge anti-collision facilities, they increase greater rigidity and absorb greater impact kinetic energy
They are suitable for anti-collision of piers or bearing platforms with higher channel grade

The shell is steel + composite shell, which has greater rigidity than composite shell
The composite material has good corrosion resistance and water resistance
Moreover, UV absorbers and anti-aging agents are added to the outer surface of the composite material to make it better weatherability

Composite lattice webs and energy consuming steel plates enhance the anti-collision ability of anti-collision facilities
Composite materials have the characteristics of anisotropy, which can give full play to the role of deformation and energy absorption, and have a stronger ability to buffer and absorb energy
During impact deformation, the impact kinetic energy is transformed into elastic potential energy, and finally reduce the impact force

High performance closed cell energy absorbing material is a closed cell structure
During impact, it absorbs impact kinetic energy by extruding and pressure feeding to prolong the impact time and play a role in energy consumption

Fixed steel clad composite anti-collision facility structure the structure of pier or bearing platform is closely attached to the surface of pier and bearing platform to absorb kinetic energy and protect the safety of bridge, ship and personnel

Impact simulation effect of fixed steel clad composite bridge anti-collision facilities:
In this calculation, the most unfavorable impact condition is used for analysis, and the impact angle is 0 ° frontal impact, as shown in the figure below
As a reference, the rigid wall at the same angle is used as the working condition of impacting the bare pier, as shown in the figure below

The installation effect of bare pier is shown in the figure below
The bow is obviously deformed
The structural deformation of the bow position absorbs the ship's kinetic energy and forces the ship to stop moving

The anti-collision effect is shown in the figure below
The anti-collision facilities are partially deformed, sharing the dissipation of kinetic energy for the ship

The comparison of impact force is shown in the figure below:
Curve A is the ship impact force on the pier without bridge anti-collision facilities, and curve B is the impact force on the pier with bridge anti-collision facilities
It can be seen from the curve trend in the figure that after the anti-collision facilities are set, the ship impact force can be significantly reduced, the impact time can be prolonged, and the purpose of protecting the pier can be achieved

Features of fixed steel clad composite bridge anti-collision facilities 1
Flexible materials and good energy absorption of impact force
The fixed steel clad composite bridge anti-collision facilities are made of flexible materials + steel
They are filled with high-performance closed hole energy absorbing materials, which can greatly reduce the ship collision force, effectively protect the safety of people and bridges, and minimize the damage of ships

2
Excellent corrosion resistance, durability, impact resistance and fatigue resistance
Compared with pure steel bridge anti-collision facilities, steel + composite bridge anti-collision facilities have good corrosion resistance and durability, and do not need maintenance during use;
Good structural performance and can withstand multiple impacts of small boats;
The composite has strong fatigue resistance and good elasticity, and can recover after deformation

3
Light weight, convenient transportation, installation and replacement
The proportion of steel + composite shell is 1 / 4 of that of steel shell, and the proportion of high-performance closed cell energy absorbing material is lighter

The independent unit has light weight and low transportation and hoisting costs

4
The collision can change the ship's course
The fixed steel clad composite bridge anti-collision facilities are of fillet structure
When the ship collides with the anti-collision facilities, the anti-collision device can push away the bow of the ship so that it will not continue to impact the pier, so as to actively reduce the energy of the ship hitting the pier

5
Good connection form, convenient disassembly, transportation and installation
The fixed steel clad composite bridge anti-collision facilities are composed of multiple independent units, which can be connected by mortise and tenon or bolt
They can be disassembled, transported and installed conveniently and efficiently
It is convenient to repair and replace each unit after damage

6
The anti-collision device can be designed according to the specific conditions of the bridge pier
7
Beautiful and eye-catching appearance
The appearance of fixed steel clad composite bridge anti-collision facilities can be made into any color or pattern and set into eye-catching color or reflective form to improve the safety of piers

Installation diagram of fixed steel clad composite bridge anti-collision facilities anti-collision mechanism of fixed steel clad composite bridge anti-collision facilities in the protection system of fixed steel clad composite bridge anti-collision facilities, when the ship is in close contact with the anti-collision facilities, the cross-section of the anti-collision facilities itself can also bear large impact force
The shell of the facility cross-section is made of elastic composite materials, and the energy consuming materials filled in it have high shear strength and strong cushioning capacity

Because the bridge anti-collision system has the characteristics of light weight, cushioning and low elastic modulus, it can effectively protect the ship from local damage

The stress mechanism of fixed steel clad composite bridge anti-collision facilities is summarized, mainly including the following points:
Good elasticity, long fiber can effectively disperse the impact load and protect bridges and ships at the same time;
High fiber strength and light weight;
Corrosion resistance, good stability, maintenance free, paint free coating;
Green environmental protection materials;
Light weight, convenient transportation, installation and replacement;
The interior is tightly filled with energy consuming materials, and the energy consuming materials rub against each other to consume energy during impact, so as to reduce the impact force;
Small bumps do not break, medium bumps are easy to repair, and large bumps are easy to replace

Success stories:
Hengshui shengte Technology Co
, Ltd
customized and installed fixed steel clad composite bridge anti-collision facilities for the fourth Beijiang bridge in Qingyuan, Guangdong

Qingyuan Beijiang No
4 bridge is 1512m long and is a two-way six lane class I Highway and urban main road with a design speed of 60kg / h
It is the new central axis of urban landscape in Qingyuan City, which closely connects the provincial vocational education base and foqing from the expressway

Suntech has customized and produced bridge anti-collision facilities suitable for the bridge according to the requirements of customers

Scope of application: composite anti-collision fender is a fiber-reinforced composite material with different structures designed according to the size of the bridge and the characteristics of navigable ships
It is equipped with energy dissipation structure and filled with high-performance closed hole energy absorbing materials; It is mainly to consume and absorb the impact force of ship impact and change the direction of ship travel, so as to protect people, bridge body structure and ship from damage

Taking full advantage of the corrosion resistance, long service life and good structural performance of the composite materials, it can withstand various harsh environments such as precipitation, seawater, current and sediment impact in rivers or oceans, and its service life is up to decades

The composite anti-collision fender can be designed into standard type and customized type according to the bridge shape and navigation conditions:
The standard type of composite anti-collision fender is made into units with the same appearance shape, structural form and size, which are assembled and installed on the bridge cushion cap or pier on site;
The customized composite anti-collision fender can be designed into different appearance shapes, structural forms and anti-collision facilities of different sizes according to the pier cap and navigation conditions

Composite anti-collision fender can be classified into fixed type and self floating type according to the required form:
The fixed composite anti-collision fender is fixedly installed at the anti-collision part of the bridge pier;
The self floating composite anti-collision fender is installed around the pier of the bridge
With the height of the water level on the river (River and sea), the self floating composite anti-collision fender rises and falls up and down along the pier axis by relying on its own buoyancy, and the composite anti-collision fender is always at the impact height of the ship

Composite anti-collision fenders include rectangle, semicircle, circle, heterohedron, polygon and so on; The installation methods include single unit suspension type, multi unit mortise and tenon structure or bolt combination structure, and each structure type is convenient for transportation and installation