双弯梁斜截面抗剪性能的有限元模拟

摘要

Introduced ANSYS software structure analysis of the basic theory, in literature [4] 9 uniformly distributed load with web reinforcement curved beam were simulated and analyzed, and the experimental results shows that, using ANSYS modeling for uniformly distributed loads with web reinforcement curved beam simula- tion is feasible. According to the results of ANSYS analysis, analysis of the double beams each stage of crack development, production process.Through the contrast analysis of double curved beam with single curved beam of the influence factors of shear and oblique crack, development process. Biaxial bending condition characteristic with single bend in similar circumstances, but its bending plane and section plane centroid principal inertia axis has an angle. Therefore, study of biaxial bending shear strength could draw a single bending shear strength of inclined section of research results.%本文介绍了ANSYS软件结构分析的基本理论,对文献[4]中的9根均布荷载有腹筋双弯梁进行模拟分析,与已有试验结果的对比表明,采用ANSYS建模对均布荷载作用下有腹筋双弯梁进行模拟分析是可行的。针对ANSYS分析的结果,分析了双弯梁各阶段裂缝的发展、产生的过程。通过对比分析双弯梁与单弯梁的抗剪影响因素和斜裂缝产生、发展的过程来看,双向受弯情况的特点与单弯情况相似,只是它的弯矩作用平面与截面的形心主惯性轴平面有一夹角。因此,探讨双向受弯构件斜截面抗剪强度问题时可借鉴单向受弯斜截面抗剪强度的研究成果。