DepartmentofCivilEngineering;
FacultyofEngineering;
YamaguchiUniversity;
UbeYamaguchi-ken755-8611Japan;
DivisionofGeosphereEnvironmentalScience;
AbikoResearchLaboratory;
CentralResearchInstituteofElectricPowerInfidytu.Vjons-ken242-0014Japan;
DOWAEngineeringCo.Ltd.;
ShinbashiDOWABldg.;
Tokyo105-0004Japan;