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新型单层空间大跨度不规则曲面钢网格结构施工关键技术
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作者 迂长伟 韩超 +2 位作者 王振辉 郭建营 胡延立 《建筑技术》 2022年第12期1627-1630,共4页
衢州市文化艺术中心和便民服务中心建筑外形新颖,结构复杂,安装精度要求高,通过施工模拟验算,合理选择起重设备,采用地面拼装、分单元吊装、科学卸载的技术思路进行施工,创新性地采用“屋脊环梁定位、主杆逆装”技术实现新型单层空间大... 衢州市文化艺术中心和便民服务中心建筑外形新颖,结构复杂,安装精度要求高,通过施工模拟验算,合理选择起重设备,采用地面拼装、分单元吊装、科学卸载的技术思路进行施工,创新性地采用“屋脊环梁定位、主杆逆装”技术实现新型单层空间大跨度不规则曲面钢网格结构精准高效安装。 展开更多
关键词 门式刚架 不规则曲面 钢网格 环梁定位 主杆逆装
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上海虹口体育中心钢屋盖安装技术
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作者 朱伟新 吴欣之 《建筑施工》 1999年第5期2-5,共4页
介绍上海虹口体育中心钢屋盖工程外环梁的临时搁置和定位以及特长悬挑桁架的安装技术。
关键词 体育建筑 钢结构屋盖 环梁定位 悬挑桁架 安装
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A Fourier spectrum-based strain energy damage detection method for beam-like structures in noisy conditions 被引量:1
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作者 YANG ZhiBo CHEN XueFeng +2 位作者 RADZIENSKI Maciej KUDELA Pawel OSTACHOWICZ Wieslaw 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2017年第8期1188-1196,共9页
In this paper,the Fourier spectrum-based strain energy damage detection method for beam-like structures is proposed based on the discrete Fourier transform.The classical strain energy damage detection method localizes... In this paper,the Fourier spectrum-based strain energy damage detection method for beam-like structures is proposed based on the discrete Fourier transform.The classical strain energy damage detection method localizes damage by the comparison of the strain energy between the intact and inspected structures.The evaluation of the 2nd-order derivative term in the strain energy plays a crucial part in the comparison.The classical methods are mostly based on a numerical derivative estimation for this term.The numerical derivative,however,introduces additional disturbances into damage indications.To address this problem,a discrete Fourier transform-based strain energy is proposed with the emphasis of enhancing the performance in noisy condition.The validations conducted on the simulated and experimental data show that the developed method is effective enough for composite beam damage detection in noisy environments. 展开更多
关键词 Fourier spectrum strain energy (SE) composite beam noisy condition damage detection mode shape
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