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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。
Through the bending static tests of four rectangular-section poplar beams, the main bending properties of poplar beams such as flexural strength and flexural modulus were studied. The mid-span strain and deflection data under two concentrated loads were measured. The relationship between load and deflection and strain was analyzed, and the flexural strength and flexural modulus of poplar were calculated. Through the basic wood mechanical properties test, the tensile, compressive strength and elastic modulus, transverse compressive strength and elastic modulus of poplar were determined. The test results provide the experimental basis for the numerical analysis of the beam-adobe wall, the beam-adobe composite wall later.