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Study on the Effect of Extra Pole Support on Seismic Resistance for Low-Rise RC Structures

机译：额外杆支护对低层RC结构抗震性抗震抗性影响的研究

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摘要

There is a common way to enhance the collapse safety of residential houses using extra tilted poles supporting poor structures from the outside before and/or after earthquakes in seismic regions, especially in rural areas. But, almost all of these supporting measures are still weak and lack of scientific design and evaluation. This study takes a poorly designed two-bay and three-story RC frame building as an object to explore the effect of this kind of support measures on structural seismic resistance by comparing with a standard-designed RC frame structure model as a contrastive case. The results obtained by performance-based methods indicate that extra poles can improve the seismic collapse safety and reduce structural seismic damage of the poorly designed structure (PDS) effectively. The median collapse capacity parameter theta increases from 1.31 g to the range of 1.92 similar to 2.39 g, and Sa)" open="(|"T1;10% (spectral acceleration at the first-mode period which causes 10% probability of structural collapse) also increases from 0.57 g to the range of 0.75 similar to 1.08 g. Study of dynamic structural damage shows a great damage reduction of PDS under seismic loads, especially Sa)" open="(|"T1 = 0.2 g. This study proves that this simple measure can improve the seismic resistance of PDS into an acceptable level by taking our suggested practical and efficient supporting schemes.
机译：使用额外的倾斜杆来增强住宅房屋的崩溃安全性，额外的倾斜杆从地震区域的地震前和/或地震中的地震前和/或后/或后/或地震区域之后的地震区域，特别是在农村地区。但是，几乎所有这些支持措施仍然弱势和缺乏科学的设计和评估。本研究采用了一个设计的双托架和三层RC框架建筑，作为一种物体，可以通过与标准设计的RC框架结构模型与对比情况相比，探讨这种支持措施对结构地震阻力的影响。通过基于性能的方法获得的结果表明，额外的磁极可以有效地改善地震塌陷的安全性并降低设计不良结构（PDS）的结构性地震损伤。中值崩溃容量参数θ从1.31g增加到1.92的范围，类似于2.39 g，sa）“开放=”（|“> t1; 10％（在第一模式时期的光谱加速度导致10％的概率结构塌陷也从0.57g增加到0.75的范围，类似于1.08克。动态结构损伤的研究表明，震动载荷下的PDS的巨大损害降低，特别是SA）“开放=”（|“> T1 = 0.2g。本研究证明，通过采取建议的实用和有效的支持方案，这种简单的措施可以提高PDS的地震阻力进入可接受的水平。

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  • 来源
    《Advances in civil engineering》 |2019年第14期|4763849.1-4763849.15|共15页
  • 作者

    Lu Pengjie; Wang Guoxin;

  • 作者单位

    Dalian Univ Technol State Key Lab Coastal & Offshore Engn Dalian 116024 Liaoning Peoples R China|Dalian Univ Technol Inst Earthquake Engn Sch Hydraul Engn Fac Infrastruct Engn Dalian 116024 Liaoning Peoples R China;

    Dalian Univ Technol State Key Lab Coastal & Offshore Engn Dalian 116024 Liaoning Peoples R China|Dalian Univ Technol Inst Earthquake Engn Sch Hydraul Engn Fac Infrastruct Engn Dalian 116024 Liaoning Peoples R China;

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