Development of Design Method and Dynamic Performance of Modern Timber Bridges used Glulam

在本研究的实施过程中，需要澄清的问题如下：1。收集了全国47个行政区700座桥梁的现代木桥架设结果数据，从结构、类型、木材种类等因素的析因分析中，定量掌握了日本现代木桥的实际情况。通过收集7座桥梁的实际桥梁试验数据，分析了现代木结构巷道桥梁的动力性能响应、加速度、速度、振动位移。阐明了现代木桥的车辆通行能力和基于行人振动感的可使用性等实际情况。3 .虽然不需要对结构层合木进行联合车辆行驶重复动载试验，可以阐明层合木的动力影响和疲劳强度，但由于疲劳试验机的麻烦，无法对层合木的疲劳性能和强度进行定量评价。国际上首次建立了基于三维模型的现代木桥行车完整性的三维动力响应分析方法，发现了动态响应定量动态增量因子占空比动态响应系数的性能规律。从分析结果与试验结果的一致性出发，对现代木桥的混凝土设计方法进行了检验。在对上述动力性能进行特征评价的基础上，有可能发展出适合现代木桥和混凝土性能规范的部分性能设计方法，同时明确了综合、均匀和动力性能。

The matters, which are clarified in the performance of this study, are as follows.1. It was possible that it collected the data of 700 bridges from national 47 administrative divisions on the erection results of modern timber bridges, and that from the factorial analysis of structure, types, timber species, etc., it quantitatively grasps actual condition of modern timber bridges of in Japan.2. By the collection of actual bridge test data for the 7 bridges of the modern timber roadway bridge, dynamic behavior response acceleration velocity vibration displacement. In addition, vehicle moving ability of modern timber bridges and actual condition such as serviceability based on vibration sense of pedestrian were clarified.3. Though or, dynamical influence and fatigue strength of glulam would clarify it by not having experiment on the structural glulam by repetition dynamic load with the joint vehicle travel, the quantitative evaluation of fatigue behavior and strength of glulam could not be carried out from the trouble of fatigue testing machine.4. The three-dimensional dynamic response analysis method which is the completeness of modern timber bridges by the running vehicle with the three dimensional model is formulated for the first time in the world, and it was found out that dynamic response quantitative dynamic increment factor duty cycle dynamic response coefficient performance regulation. The concrete design method of modern timber bridges was examined from the consistency of this analytical result and experimental result.5. Based on the characteristic evaluation of above dynamic behavior, it was possible to develop the part of performance design method suitable for modern timber bridges and concrete performance regulation, while the synthetic, uniform and dynamic performance is clarified.