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首页> 外文会议>Structural Engineers Association of California and Structural Engineers Association of New Mexico Convention 2012 >Seismic Behavior of Unattached Solar Arrays on Flat Roofs: Analysis, Shake Table Testing, and Proposed Requirements
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Seismic Behavior of Unattached Solar Arrays on Flat Roofs: Analysis, Shake Table Testing, and Proposed Requirements

机译：平屋顶独立式太阳能电池阵列的抗震性能：分析，振动台测试和拟议要求

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摘要

Solar photovoltaic arrays are an increasingly popular and important source of sustainable energy, and a significant portion of new solar projects consist of large arrays installed on existing flat or low-slope roofs. Where possible, building owners and solar installers typically prefer to use solar panel support systems that do not require structural attachments to the building because penetrations through the roof membrane can be costly to install and can lead to maintenance issues. For many projects, unattached ballasted structural systems provide an effective solution, so there is interest in demonstrating that such systems can withstand earthquake shaking and comply with current building codes. This paper describes: 1. structural analyses to investigate the seismic behavior of unattached solar arrays 2. shake table testing to complement analytical studies 3. proposed building code requirements developed by SEAOC to address this issue Nonlinear response history analysis and shake table testing indicate that for solar arrays on flat or low-slope roofs, friction between the solar array supports and the roof surface can effectively limit the displacement of the arrays when subjected to seismic shaking. The numerical analyses and the experimental tests use recorded roof motions from past earthquakes, spectral-matched to design spectra and scaled to different levels of design earthquake shaking. The analyses use coefficients of friction obtained from experimental pull-tests of solar array supports on roof surfaces. Based on the findings of these and other investigations, the SEAOC Solar Photovoltaic Systems committee is developing a document titled "Structural Seismic Requirements and Commentary for Rooftop Solar Photovoltaic Systems" (SEAOC 2012). This document provides proposed requirements for attached and unattached systems, including prescriptive procedures for estimating seismic displacement, as well as options for more detailed analysis or testing.
机译：太阳能光伏阵列是越来越受欢迎的重要的可持续能源，并且新的太阳能项目的很大一部分由安装在现有的平坦或低坡度屋顶上的大型阵列组成。在可能的情况下，建筑物所有者和太阳能安装人员通常更喜欢使用不需要在建筑物上进行结构连接的太阳能电池板支撑系统，因为穿过屋顶膜的安装成本可能很高，并且可能导致维护问题。对于许多项目而言，独立式压载结构系统提供了有效的解决方案，因此有兴趣证明此类系统可以承受地震震动并符合当前的建筑规范。本文介绍：1.结构分析，以研究独立式太阳能电池板的地震行为； 2.振动台测试，以补充分析研究； 3. SEAOC为解决此问题而提出的建筑规范要求非线性响应历史分析和振动台测试表明，对于平坦或低坡度屋顶上的太阳能电池阵列，太阳能电池阵列支撑件和屋顶表面之间的摩擦力在受到地震震动时可以有效地限制阵列的位移。数值分析和实验测试使用记录的过去地震的屋顶运动，进行频谱匹配以达到设计频谱，并缩放到不同级别的设计地震震荡。分析使用了从屋顶表面上的太阳能电池阵列支架的实验拉力测试获得的摩擦系数。基于这些调查和其他调查的结果，SEAOC太阳能光伏系统委员会正在制定一份名为“屋顶太阳能光伏系统的结构地震要求和评注”的文件（SEAOC 2012）。该文档提供了对连接和未连接系统的建议要求，包括用于估计地震位移的规定程序，以及用于更详细的分析或测试的选项。

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