An experimental study of utilization for large-scale wood structure using glulam from Shinshu in which it aimed at forestry reproduce

本研究采用大尺度的松树落叶松胶凝材料，进行了弯曲试验、蠕变试验等试验。然后，我们获得了一些知识。主要研究结果如下：1.大型韧皮材(高600 cm和800 cm)的弯曲试验。其尺寸效应小于一般的尺寸效应。在长野县的四个地点进行了蠕变试验。不同部位的蠕变行为不同。尤其重要的是，在一天内改变温度和湿度的值。提出了梁柱连接节点和连接节点采用传统的木节点，并对其进行了性能试验。对于柱与梁的连接，采用了“纽基”、胶粘剂和螺栓连接。结果得到了良好的刚度和韧性。4.对于联轴节，作为抗弯节点能够得到合理的结果。作为他们的结果，我们再次确认了仅使用胶合板就可以建造大型建筑。5.我们发现胶合板在招牌上使用了十年，目的是调查胶合板的强度和杨氏模量的恶化情况。通过剥离外层来更新表面的颜色。剥离外层后试件的杨氏模数与剥离前相同。

In this study, some tests that were used large scale glulam from Shinshu larch were done for example bending test, creep test and so on. Then some knowledge was gotten. The findings are following as ;1.The bending tests of large scale glulam (they were 600cm and 800cm height.) were found size effect less than general ones. And estimating model was able to calculate the bending strengths.2.The creep experiments were tested at the four places in Nagano prefecture. Their creep behaviors were difference at the each place. Especially it was important that was changing values in temperature and humidity in a day. But they didn't show size effect.3.The column to beam connections and the coupling joints were proposed using the traditional wooden joint and they were tested for finding property. About column to beam connections, it was used the "Nuki", the adhesive and the bolts joint. As a result, we got good stiffness and toughness.4.About coupling joints, they were able to get reasonable result as moment resistant joint. As their results, we reconfirmed to be able to build large scale building using only glulam.5.We found the glulam used post of signboard for ten years in which it was aimed investigating about the deterioration of strength and Young's modulus of glulam. The color of surface was renewed by peeling off the outside layer. And the Young's modules of specimen after peeling off the outside layer was as same as before peeling.