内力臂对胶合木张弦梁受弯性能影响的分析

摘要

In order the achieve the ideal status of the whole-section pressure,the paper points out the new anchor device to later the ending arm sizes,adopts SAP software to establish SPF wooden beam analysis model,analyzes the influence of the internal force arm on the loading capacity and deformation performance of SPF wooden beam under the same prestress,and proves by the result that the addition of internal force arm en-hances the wooden beam to exert its stressed strength,so as to enlarge the bending effect.%为使木梁达到全截面受压的理想状态，提出一种新型的锚固装置来改变端部力臂的大小，使用 SAP 软件建立了 SPF 木梁分析模型，分析了在相同预应力作用下，内力臂对 SPF 木梁承载能力及变形性能的影响程度，结果表明：增大内力臂有利于木梁充分发挥其受压强度，达到了增大其抗弯能力的效果。