轻量内填充RC框架的高级单螺杆建模:验证和地震性能评估
Gehad Abou El-Fotuh1,2, Walid A Attia1, M S El-Feky3,4
1Department of Structural Engineering, Faculty of Engineering, Cairo University, Giza, Egypt.
Scientific reports
|January 27, 2026
概括
这项研究引入了一种新的单支柱模型,用于模拟用石头填充的钢筋混凝土 (RC) 框架. 该模型准确地预测了地震性能,揭示了不同填充材料的刚性和可塑性之间的权衡.
科学领域:
- 结构工程 结构工程
- 地震工程的工程是地震工程.
- 计算力学 计算力学 计算力学
背景情况:
- 精确地评估钢筋混凝土 (RC) 框架的地震性能,这是非常重要的.
- 现代轻量化灌装系统 (空洞的粘土,石膏块,自轻量化混凝土) 呈现出复杂的非线性行为.
- 传统的建模方法很难捕捉这些充填系统的独特故障机制.
研究的目的:
- 开发和验证一个先进的单支杆宏建模框架,用于石头填充RC框架.
- 准确模拟各种轻型灌装系统的非线性行为和地震性能.
- 为基于性能的地震设计和分析提供可靠的工具.
主要方法:
- 在SAP2000中实施单式宏观建模框架.
- 根据实验数据校准的特定材料的非线性轴链的开发.
- 复制不同的灌装失效机制:压碎 (HCB),剪切滑动 (GB) 和滑动硬化 (ALC).
主要成果:
- 校准模型实现了高预测准确性 (侧向容量和初始刚度的误差<10%).
- 空洞粘土 (HCB) 填充物显著增加了刚性 (471%),但显示了脆性失败.
- 自式轻质混凝土 (ALC) 面板提供了优越的柔性 (μ=5.39) 和能量消耗.
- 石膏块 (GB) 填充表现出由于突如其来的强度降解而造成的地震不足.
结论:
- 拟议的单宏建模框架是浸入RC框架的地震分析的可靠工具.
- 它可以有效地对不同灌装系统进行比较评估,并考虑度-柔性权衡.
- 经过验证的模型支持基于性能的设计,减少了昂贵的全面测试的需要.
更多相关视频
09:00Author Spotlight: Validation of SICOLE-R for Assessing Cognitive and Reading Skills in Spanish-Speaking Children and Its Role in Personalized Education
Published on: August 16, 2024
1.2K
10:13A Lightweight, Headphones-based System for Manipulating Auditory Feedback in Songbirds
Published on: November 26, 2012
14.8K
相关概念视频
Framing Effects
7.9K
Information is everywhere and its presentation—such as how and when items are presented—can impact our perceptions and decisions surrounding the info. This broad concept umbrellas framing effects—influences that occur due to the way information is framed in its appearance, whether it’s purely the order or the specific wording of a message. Let’s take a look at numerous ways in which two versions of something can objectively say the same thing, yet we respond in...
7.9K
Frames
838
Frames are essential components of various mechanical and structural systems used daily. These structures are known for their stability and ability to bear heavy loads. A frame is constructed using two-force and multi-force members, interconnected using pin joints. In contrast, trusses are made entirely of two-force members.
Frames are versatile and widely used in various applications such as structural supports for beams and columns, automobile chassis construction, and in the construction...
Frames are versatile and widely used in various applications such as structural supports for beams and columns, automobile chassis construction, and in the construction...
838
Frames: Problem Solving II
494
Consider a hydraulic hoist supporting a load of 1 kN. Assuming a simplified schematic representation of this frame structure, the force acting on BD and BF members can be determined.
494
Reliability and Validity
13.9K
Reliability and validity are two important considerations that must be made with any type of data collection. Reliability refers to the ability to consistently produce a given result. In the context of psychological research, this would mean that any instruments or tools used to collect data do so in consistent, reproducible ways.
13.9K
Frames: Problem Solving I
967
Consider a jib crane with an external load suspended from the pulley. The dimensions of the crane members are shown in the figure. A systematic analysis of the frame structure is required to determine the reaction forces at the pin joints, assuming that the pulleys are frictionless.
967
RC Circuit with Source
2.8K
When a DC source is abruptly applied to an RC (Resistor-Capacitor) circuit, the voltage can be represented as a unit step function. The voltage across the capacitor, known as the step response, characterizes how the circuit reacts to this sudden change in input.
Due to the inherent properties of a capacitor, its voltage cannot change instantaneously. This means that immediately after the switch is closed, the capacitor's voltage remains the same as it was just before the switch was closed.
Due to the inherent properties of a capacitor, its voltage cannot change instantaneously. This means that immediately after the switch is closed, the capacitor's voltage remains the same as it was just before the switch was closed.
2.8K
