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沪松公路跨线桥转体施工 被引量:2
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作者 魏伟 金永兴 +1 位作者 陆辉辉 陆喜龙 《城市道桥与防洪》 2004年第4期94-97,共4页
沪松公路跨线桥是跨越沪杭高速公路的一座连续刚构桥 ,为避免施工中严重影响沪杭高速公路的正常交通和保障施工安全 ,确定采用平衡转体的施工方案。即先在高速公路两侧浇筑梁体 ,然后通过转体使主梁就位 ,最后浇筑合拢段 ,使全桥贯通。... 沪松公路跨线桥是跨越沪杭高速公路的一座连续刚构桥 ,为避免施工中严重影响沪杭高速公路的正常交通和保障施工安全 ,确定采用平衡转体的施工方案。即先在高速公路两侧浇筑梁体 ,然后通过转体使主梁就位 ,最后浇筑合拢段 ,使全桥贯通。本文结合沪松公路跨线桥主桥施工 ,简要介绍转体技术在连续刚构桥施工中的应用。 展开更多
关键词 公路跨线桥 转体施工 连续刚构桥 转盘磨心
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Compact high-order quint-band superconducting band-pass filter
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作者 Di Wu Bin Wei +3 位作者 Xi-Long Lu Xin-Xiang Lu Xu-Bo Guo Bi-Song Cao 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第6期518-523,共6页
In this paper, we present a compact quint-band superconducting filter operating at 2.4, 3.5, 4.7, 5.3, and 5.9 GHz.Matching junctions with different impedance branch lines are used to connect a dual-band sub-filter wi... In this paper, we present a compact quint-band superconducting filter operating at 2.4, 3.5, 4.7, 5.3, and 5.9 GHz.Matching junctions with different impedance branch lines are used to connect a dual-band sub-filter with a tri-band sub-filter and to reduce the channel interactions. The quint-band filter design is divided into two sections to determine the controllable frequencies and bandwidths, while ensuring compact size and reducing design complexity. The filter is fabricated on double-sided YBCO film deposited on an Mg O substrate with a size of 26 mm×19 mm. The measured results match well with the simulations. 展开更多
关键词 high-temperature superconducting bandpass filter MULTI-BAND quint-band filter
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Compact superconducting single-and dual-band filter design using multimode stepped-impedance resonator
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作者 王翔 魏斌 +2 位作者 陆喜龙 郭旭波 曹必松 《Chinese Physics B》 SCIE EI CAS CSCD 2017年第12期617-621,共5页
This study presents two multimode stepped-impedance structures to design single-and dual-band filters. Transmission zeroes are introduced for the single-band filter by using dual-mode stepped-impedance resonators. The... This study presents two multimode stepped-impedance structures to design single-and dual-band filters. Transmission zeroes are introduced for the single-band filter by using dual-mode stepped-impedance resonators. The single-band filter with high selectivity is centered at 6.02 GHz and has a fractional bandwidth (FBW) of 25.6%. Four stubs (two low frequency and two high frequency ones) are connected to the rectangular patch in the center to construct a quadruple-mode resonator. The independent conditions of the center frequencies of the high and low bands of the resonator are analyzed. A dual-band filter, which operates at 1.53 GHz and 2.44 GHz with FWBs of 12.1% and 14.1%, respectively is designed. The single-and dual-band filters are both fabricated with double-sided YBCO films and they can be used in mobile and satellite communications. 展开更多
关键词 high-temperature superconducting bandpass filter multimode stepped-impedance resonator dual-band filter
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