Analyticaland experimental study of methods to intellectualize bridges

(1)动态试验结果表明，光纤传感器不仅可用于混凝土结构构件的静态应变测量，还可用于桥梁完整性智能监测所需的混凝土结构构件的动态应变测量。(2)在碳纤维格栅加固的效果，它被发现，在弯曲和斜裂缝的负载的增加甚至更大（60至120%）比非钢筋混凝土梁。(3)通过两种锤击法的锤击试验，绘制了钢筋混凝土桥梁混凝土离析分布图。(4)提出了利用桥梁检测数据库进行桥梁整体完整性评估的加权平均法。(5)为了通过测量振动特性的变化来识别钢结构的损伤，采用了局部激励振动试验方法。结果表明，局部激励法在钢结构损伤检测中的适用性。(6)根据30座公路钢拱桥的实测数据，提出了估算公路钢拱桥自振频率的精确公式。(7)通过对某梁系交通振动的分析，表明车辆振动的初始条件对跨度很短的梁系的影响很大。(8)基于坂神高速公路梅田入口桥在自卸车作用下的响应数据，利用LQ理论进行了主动控制的理论分析。

(1) As a result of dynamic experiments, it was demonstrated that optical fiber sensors were able to be applied to measurement of not only static strain but also dynamic strain, which was need for smart monitoring of bridge integrity, of reinforced-concrete structural members.(2) In the effect of the CFRP grid reinforcing, it was found that the increase in the load at which flexural and diagonal cracks was even greater (60 to 120%) than that of non-RC beam.(3) Based upon a blow test by using of two kinds of hammers, the distribution of separated concrete of RC bridges was able to be plotted.(4) Weighted average method using the database of inspection on bridge was proposed to evaluate the total integrity of a bridge.(5) In order to identify the damage of steel structures by measuring the change of vibration characteristics, local excitation method of vibration test was applied. As a result, applicability of local excitation method to detect damage of steel structures was shown.(6) Formulae to estimate the accurate natural frequency of various steel arch highway bridges were proposed by the use of experimental data obtained from measurements on 30 steel arch highway bridges.(7) It was demonstrated that the influence of the initial condition of vehicle vibration on a girder with very short span length was large, based upon analytical results on traffic-induced vibration of a girder system.(8) A theoretical analysis of active control was carried out using LQ theory, based on the data of a response of Umeda Entrance Bridge of Hanshin Expressway due to a dump truck.