Development of a load capacity theory of timber panel elements

木板元件承载能力理论的发展

• 批准号: 385052327
• 负责人: Professor Dr.-Ing. Mike Sieder
• 金额: --
• 依托单位: Institut für Baukonstruktion und Holzbau
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/385052327?language=en
• 关键词: Development; load; capacity; theory; timber

The specific objective of the activities in this research period is the development of anextended shear field model in a plastic area for the calculation of planar shear-stressed timber panel elements with partially free edge of the panels. The prerequisites and fundamentals of this development have been developed in the previous research sections.It refers to:the experimental proof of the possible fully plasticized state of the composite of ribs and sheathing boards, the extended shear field model for planar timber panel elements with partially free panel edges for the determination of the elastic limit state, the rod composite model for planar timber panel elements.In the extended shear field model, the continuous ribs are replaced by a link chain with hinges in the area of the sheathing boards. In distinction to the rod composite model, not only the deformations of the sheathing boards but also the rib sections of the link chain are neglected. It can be described as a rigid body model with elastic / plastic composite.In addition to the rod composite model, this model has the validity to provide simple determination equations for the estimation of stresses in the plastic limit state.

在这一研究阶段的活动的具体目标是在塑性区的扩展剪切场模型的发展与部分自由边缘的面板的平面剪应力木面板单元的计算。这一发展的前提和基础已在前面的研究部分中得到了发展，包括：肋板和板的复合材料可能的完全塑化状态的实验证明，确定弹性极限状态的板边部分自由的平面木板单元的扩展剪切场模型，平面木板单元的杆复合模型，在扩展剪切场模型中，连续肋板在板的区域被铰链链代替。与杆件组合模型不同，不仅忽略了板件的变形，而且忽略了链肋截面的变形。该模型可描述为一个弹塑性复合体的刚体模型，与杆复合体模型相比，该模型可为塑性极限状态下的应力估算提供简单的确定方程。