| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquefaction countermeasure structure of a weak foundation for providing the sufficient liquefaction preventive effect even if an opposed wall interval of an underground wall 6 is large, by preventing rocking vibration of a structure, by transmitting a vertical load of the structure to a structure just under foundation 31, by transmitting structure inertial force generated in an earthquake to the underground wall 6 arranged on the structure outer periphery via an underground wall 7 connected to the structure.SOLUTION: The liquefaction countermeasure structure of the foundation comprises a structure 2, an outside underground wall 4 drawn up to an unliquefied foundation 4 by surrounding a structure just under foundation 31 by slightly separating outside from the structure outer periphery and an inside underground wall 7 connected to the lower edge vicinity of the structure, in which the structure inertial force in the horizontal direction by the earthquake is transmitted to the outside underground side 6 via the inside underground wall 7, and reduces external force by the structure inertial force acting on the structure just under foundation 31, and reduces shear stress of the foundation, and restrains the rocking vibration of the structure by the earthquake by friction between the inside underground wall 7 and the foundation, and makes the whole vertical load of the structure act on the structure just under foundation, and increases effective stress of the foundation. |
