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Structural Engineering
Wood Beam Bending and Strength Tests
Description
Wood is a common building material used in construction. It is renewable and sustainable, and it also has strong visual appeal. More buildings are likely made with wood than with any other structural material today.
Many wood structures are single-family homes. Wood framing is also used in larger...
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Transcript
木材是一种无处不在的材料,自古以来就被用于建筑。作为一种可再生且可持续的材料,木材在工程中被广泛用作结构材料,用于建造独户住宅建筑,也用于商业和工业建筑中的隔断框架及其他非结构部件。
由于木材具有天然来源,其力学性能与树木的具体树种密切相关。含水率及其他变量,例如缺陷的存在,都会影响其性能。对于特定应用,设计人员必须仔细考虑木材构件或结构所承受的预期荷载,以确保材料发挥最大效能。
本视频将演示如何测试不同类型木材的力学性能,并确定其应力-应变行为和抗弯性能。
木材由细长、圆形或矩形的管状细胞构成,这些细胞的长度远大于其宽度。在细胞壁内,由微纤丝形成多个层次,而微纤丝是纤维素聚合物的束状结构。
微纤丝链在细胞壁各层内沿不同方向排列。中间层的...
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