关于异常RHS梁柱连接的平面初始旋转刚度的研究
Xiaonong Guo1, Weixin Li1, Zeyu Xv1
1College of Civil Engineering, Tongji University, Shanghai 200092, China.
Materials (Basel, Switzerland)
|July 29, 2023
概括
这项研究开发了一种方程式,用于异常矩形空洞截面 (RHS) 关节的初始旋转刚度. 研究结果显示,网状板变形是关键因素,在分析中可以忽略空间效应.
科学领域:
- 结构工程 结构工程
- 机械工程 机械工程
- 材料科学 材料科学 材料科学
背景情况:
- 奇特的矩形空洞截面 (RHS) 接头在框架结构中提供了增强的机械性能和空间利用.
- 对于初始旋转刚度,简化有限元分析以及异常RHS接头的空间效应的理解有限.
研究的目的:
- 建立一个计算公式,以计算异常RHS接头的初始旋转刚度.
- 在复杂的压力条件下研究空间效应的影响.
- 提出一种简化的数学模型来分析异常RHS接头.
主要方法:
- 开发一个初始旋转刚度的计算公式.
- 有限元分析用于研究空间效应并验证数学模型.
- 对几何比率 (深度与宽度,厚度,宽度与厚度) 和硬化效应进行参数研究.
主要成果:
- 网板变形刚度是影响初始旋转刚度的主要因素.
- 旋转刚度随着梁与柱子的深度与宽度,梁与柱子的厚度和柱子的宽度与厚度比率的提高而增加.
- 时刻分布显著影响旋转刚度,当梁与柱的侧边宽度比超过0.7;硬化剂具有附加效应;空间效应可以忽略不计.
结论:
- 一个经过验证的功率函数模型准确地模拟了异常RHS接头的静态负载行为.
- 拟议的模型简化了对异常RHS接头的分析,考虑了关键的几何参数.
- 该研究为设计和分析使用异常RHS接头的结构提供了关键数据.
相关概念视频
Design of Columns under an Eccentric Load
590
Designing columns to withstand eccentric loads is a critical aspect of structural engineering, ensuring structures can support off-center loads without failure. This design process must account for the additional normal stresses introduced by eccentric loading, which can significantly influence a column's stress distribution and overall stability. An eccentric load applied to a column induces normal stresses that can be conceptualized as a combination of stresses due to an equivalent...
590
Eccentric Loading
429
Eccentric loading is a crucial concept in the study of structural engineering and mechanics, particularly when analyzing the stability and stress distribution in columns. Unlike centric loading, where the force is applied along the centroidal axis, causing uniform compression, eccentric loading occurs when a force is applied off-center. This off-center application introduces not only direct compressive stress but also bending stress, significantly influencing the column's behavior under...
429
Eccentric Axial Loading in a Plane of Symmetry
226
Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.
226
Euler's Formula to Columns with Other End Conditions
557
Euler's formula is very important in the field of structural engineering, providing a foundation for understanding the critical loading conditions of pin-ended columns. This formula links the modulus of elasticity, the moment of inertia of the cross-section, and the column's length, offering a precise calculation of the critical load at which a column is prone to buckling.
557
Bending of Members Made of Several Materials
224
In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
224
Internal Loadings in Structural Members: Problem Solving
1.3K
When designing or analyzing a structural member, it is important to consider the internal loadings developed within the member. These internal loadings include normal force, shear force, and bending moment. Engineers can ensure that the structural member can support the applied external forces by calculating these internal loadings.
To illustrate this, let's consider a beam OC of 5 kN, inclined at an angle of 53.13° with the horizontal and supported at both ends. Determine the internal...
To illustrate this, let's consider a beam OC of 5 kN, inclined at an angle of 53.13° with the horizontal and supported at both ends. Determine the internal...
1.3K


