Elucidation of deteriorative mechanism of construction structures and development of diagnostic method by optic full-field measurement techniques

利用三维激光扫描仪、平板成像扫描仪、三维摄影测量、散斑全息干涉测量和数字成像相关测量等光学全场测量技术，对由钢、混凝土、薄膜和复合材料等组成的建筑结构的劣化机理进行了全场测量，并对其劣化机理进行了阐明。在此基础上，研究了光学全场检测技术在建筑结构无损检测和维修诊断中的适用性。具体内容如下：(1)钢构件残余应力的测量和焊接构件裂缝扩展的测量与分析(2)各向异性FRP板的振动和应力测量及其在粘结破坏等缺陷检测中的应用(3)张拉膜皱纹的产生和形态的测量与分析(4)环氧树脂试件的压缩破坏试验测量与分析(5)混凝土养护过程中收缩和温度裂缝的测量与分析(6)碱-硅酸反应模拟试验阐明混凝土的劣化机理(7)大型结构的三维测量及其在抗震诊断中的应用以及对结构健康监测的可能性的追求

By using of the optical full-field measurement techniques such as three dimensionally laser scanner, flat-bed imaging scanner, three dimensionally photogrametry, speckle and holographic interferometry measurement and digital imaging correlation measurement, deteriorative mechanism of construction structures which constitutes with steel, concrete, membrane and composite materials etc. have been full-field measured, and their deteriorative mechanism have been elucidated. And then the applicability to nondestructive test and diagnostic method for maintenance of construction structures of optical full-field measurement techniques have been studied. Detail are as follow,(1) Measurement of resisual stress of steel member and measurement and analysis of crack propagating of welded steel member(2) Measurement of vibration and stress of anisotropic FRP plates and the application for defect detection such as adhesion failure(3) Measurement and analysis of generation and configuration of wrinkle of tensioned membrane(4) Measurement and analysis of compressive failure test of the epoxy resin specimens(5) Measurement and analysis of shrinkage and thermal cracks among cure process of concrete(6) Elucidation of deteriorative mechanism of concrete by Arkali Silica Reaction simulation test(7) Three dimensionally measurement of large scale structures and its application to seismic diagnosis by static and dynamic analysis, and pursuit of possibilities for the structural health monitoring