木环梁在 Adobe 砌体结构动态响应中的定量贡献

CivilEng Pub Date : 2023-11-27 DOI:10.3390/civileng4040065
Georgios Xekalakis, P. Christou, D. Pitilakis, N. Kyriakides
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引用次数: 0

摘要

用土坯砌成的土木结构是一个复杂的系统,因此很难确定其行为,尤其是在需要承受地震力等侧向力的情况下。本文介绍了一项数值研究,用于评估未加固的土坯砌体结构的结构响应,以及安装木环梁对其整体抗性的影响。在数值研究的框架内,创建了有限元模型来模拟有无木环梁的土坯建筑的响应。测试建筑位于地中海东南部地震带的塞浦路斯。本研究中使用的材料属性可在文献中找到,并基于当地材料的实验数据。模型承受了地震荷载,进行了时间历程分析,以计算相关的位移和应力。研究结果表明,集成木环梁可将基本周期降低 6%,并改变建筑物的抗震性能。这种改变不仅体现在应力的大小上,还体现在应力的分布上,从而导致应力分布分层。峰值应力主要集中在环梁周围。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Quantitative Contribution of Timber Ring Beams in the Dynamic Response of Adobe Masonry Structures
Earthen structures made of adobe bricks are complex systems that making the identification of their behavior difficult, especially when they have to sustain lateral forces such as seismic forces. This paper presents a numerical investigation for the assessment of the structural response of unreinforced adobe masonry structures and how the installation of wooden ring beams contributes to their overall resistance. In the framework of the numerical investigation, finite element models were created to simulate the response of an adobe building with and without the presence of wooden ring beams. The test building is located in Cyprus, in the South Eastern Mediterranean region which is a seismic area. The material properties used in this study were found in the literature and were based on experimental data for local materials. The models were subjected to earthquake loads, performing time history analyses for the calculation of pertinent displacements and stresses. The findings indicate that integrating wooden ring beams reduces the fundamental period by 6% and modifies the building’s seismic behavior. This modification is evident not just in the magnitude of the stresses but also in their distribution, leading to a stratified stress profile. Peak stresses are primarily concentrated around the ring beams.
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