Specification for anti-collision guardrail of highway bridge

First, bridge railings should have the functions of isolation, buffering and correct guidance. The common anti-collision guardrail of bridge has sufficient compressive strength and ductility, and is reliably connected with the main project of highway bridge;

Second, the common anti-collision guardrail for bridges In the construction of highway bridges or tunnels in big cities with a design speed of 50km/h or above, the theme movable guardrail should be set on the middle green belt, and the anti-skid grade of the movable guardrail should be consistent with that of the middle guardrail of the highway bridge section to which it belongs.

3. Transition sections should be set at the joints of bridge railings with different structural forms or different bending stiffness, so that the bending stiffness of the guardrail can be gradually connected to form a whole.

Four, the bridge railing can choose rigid, semi-rigid or flexible guardrail methods, and choose different waterproof grades and structural forms according to the actual situation.

Five, the bridge commonly used anti-collision guardrail for safety protection to solve the starting and ending points of bridge railings.