The seismic performance of bridges is particularly outstanding, even in the event of a strong earthquake, they can often maintain structural integrity and quickly restore traffic. The strong seismic resistance of Japanese bridges is not accidental, but the result of the combined effects of technology, standards, and details.

1、 Ultimate seismic design concept

1.1 Prioritize "flexible seismic resistance" over hard resistance

Japanese bridges do not pursue absolute rigidity, but adopt a flexible seismic design approach. By absorbing seismic energy through structural deformation, reducing the damage of impact force to the main body, and achieving "earthquake without collapse".

1.2 Wide application of seismic isolation and damping technology

A large number of bridges use seismic isolation bearings and damping devices,オナホール such as installing "shock absorbers" on bridges, effectively cutting off the transmission of seismic waves. Even if the ground shakes violently, the bridge body can maintain relative stability.

2、 Strict construction standards and specifications

2.1 Continuously upgraded seismic indicators

Japan will continue to improve the seismic standards for bridges based on the latest earthquake research. New bridges must be designed with higher intensity, and old bridges will also be regularly reinforced and renovated.

2.2 Material and Construction Highly Reliable

Bridges commonly use high-strength and high toughness concrete and steel to enhance structural ductility and durability. Strictly supervise the entire construction process to ensure that there are no hidden dangers in the details.

3、 Long term maintenance and monitoring system

Japanese bridges have a comprehensive system of regular inspections and real-time monitoring. By using sensors, unmanned inspections, and other methods, cracks, aging, and other issues can be detected in advance, and timely maintenance can be carried out to maintain the bridge in the best seismic state for a long time.

Why are Japanese bridges recognized for their strong seismic resistance?

Japan is located in an earthquake prone zone and has an extreme pursuit of building seismic resistance.