【摘要】 通过对四根矩形截面杨木梁的受弯静力试验,研究了杨木梁的抗弯强度与抗弯弹性模量等主要抗弯性能。测得木梁在两点集中荷载作用下的跨中应变和挠度数据,分析了荷载与挠度及应变的关系,计算了杨木的抗弯强度与抗弯弹性模量。通过进行木材基本力学性能试验,确定了杨木顺纹抗拉、压强度与弹性模量,横纹抗压强度与弹性模量。试验结果为后期的木梁与木柱、梁—土坯组合墙体有限元数值分析提供了试验依据。更多还原

【Abstract】 The static bending tests on 4 rectangular poplar wood beams were carried out.The bending behavior,failure mode and the relationship between load and deflection as well as strain of wood beams are analyzed.At the same time,the bending strength and elastic modulus are calculated.Through the basic mechanical test,the compressive strength,tensile strength and elastic modulus parallel and perpendicular to the grain are determined,the experimental data of strain and deflection are obtained.The experimental results provide a reference for the later finite element numerical analysis on wood beams,wood column and beam-adobe composite wall.更多还原