结构工程硕士论文：圆孔蜂窝梁 模型设计 滞回剖析 破坏形式(国外英文资料).docVIP

结构工程硕士论文：圆孔蜂窝梁 模型设计 滞回分析 破坏模式(国外英文资料) Structural engineering masters thesis: the hysteresis performance and failure mode analysis of circular hole cell beam 【 abstract 】 cellular (opening) web steel girder is a form of cross section, bending stiffness, high bearing capacity and economic benefit of construction of new steel structure components. At present, the research on the structure of this kind of structure is mainly the bearing capacity and stability, and the research on the delay analysis is very small. In this paper, on the basis of the research has, using the finite element software ANSYS to cellular beams under low reversed cyclic loading hysteresis property and failure mode for the system research, the main contents are as follows: (1) introduced the making process of the honeycomb beam, and through the similar than of physical quantities of model and prototype. (2) the cross ratio D = 10, 12, 14, 16, 18 hole honeycomb beam in the low cyclic across two concentrated load and concentrated load, span across all studies on the system under the action of uniformly distributed load, and discuss the different span ratio of round hole honeycomb beam under the three loading method of hysteresis curves and skeleton curves. Through the initial stiffness, bearing capacity, displacement ductility and energy dissipation coefficient analysis of indicators, it is concluded that when the cross ratio D = 14, the most full hysteretic curve, ductility and energy dissipation coefficient is the largest, has good energy dissipation capacity, and with the increase of cross ratio, the round hole of the bearing capacity of the honeycomb beam and the initial stiffness decreases. (3) the cross ratio D = 10, 12, 14, 16, 18 hole honeycomb beam in the low cyclic across two concentrated load and concentrated load, across all across the Von Mises stress distribution under uniformly distributed load research, discusses the different forms of cross ratio and different load failure mode of