≫TOP≫Various BuRURU's introduction ≫Pull Rope BURURU

The earthquake movement with very longer earthquake of the deep type at the cycle is more superior to the earthquake in the inland. Therefore, large damage is feared by the skyscraper's that shakes slowly easily resonating and shaking widely. This is an earthquake movement problem of the length cycle.

It is necessary to plan and design buildings avoiding the cycle which shakes the fandation frequently in order to prevent the damage of long cycle earthquake motion problem.

In the case of established buildings,several measures can be consodered such as repairing vibration control in order to reduce shaking in structures.

Pull Rope Bururu is a teaching aid targetting owners of high rise buildings and th residents. It aims at making them realize the fearfullness of shaking due to long cycle earthquake motion, and the necessity of taking preventive measures.

A rope is bound on the both ends of the cart installed on the rail, then pulled left and right by human strength. It is the primitive technique to reproduce shaking of unreproducible long stroke

＜A related page＞
Difference in the cycle of a shake ：Hand-crank Bururu
Reappearance of a long cycle earthquake motion with oscillating stand ：Self-propelled Bururu
Experiment of the effect of vibration control reinforcement ：Wooden Bururu

Fukuwa.lab 2005.12.18