≫TOP≫Various Bururu's introduction≫Wooden Bururu
 
   
 
　Wodden Bururu can experiment by displaying the building model of two houses with a different structural characteristic on the truck.
　The building assumes two story "ZAIRAI JIKUGUMI KOUHOU" between depths 3 between width 2 with a wooden model of reduced scale ratio 1/10.
　It is possible to experiment on various menus by the difference of the reinforcement method as follows.
 

Experiment animations are in " The importance of earthquake-proof of wooden housing proved by model experiments".
①　Effect of the diagonal brace ②　Effect of the reinforcing metal ③　Balance of the plane rigid
　The structure model on the right which does not have braces leaned largely in spite of a little vibration.Boards do not have enough resistance to the quake. 　On the right model, the braces which tried to resist to the horizontal force ended up being off the pillars and the structure collapsed entirely. 　In spite of the same number of the reinforcing metal, ill-balanced placement of them makes the structure weak. Therefore, the first floor of the model on the right bends and falls.
④　Balance of the up-and-down rigid ⑤　Effect of the damper ⑥　Differnce of the roof's weight
　The model on the right collapses eventually because the first floor cannot sustain the upper floor. The model on the left, on the other hand, the plywood is placed in both first and second floors in balanced manner. 　On the right model, Six dampers absorb the power of quake, and vibrations’ amplitude in the model with damper is smaller and it also decreases faster. 　No damage is seen in the model on the left because of light roof, which reduced horizontal force applied to the house.
⑦　Difference of the fandation ⑧　Difference of the ground

⑨　Reinforcement of the furniture
　In the model on the right, foundations collapsed and anchor bolts came out, so that the house slide to the front. 　The model on the right, sustained by soft soil, vibrates slowly and largely. On the soft soil, seismic force tends to be amplified. 　The pieces of furniture without the metal fittings falls down because of the initial horizontal force,. so we have no time to escape.