| 强震下拱式体系桥梁震害特征及抗震研究 |
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| 引用本文： | 李晓莉,邹雨鹤,王东升.强震下拱式体系桥梁震害特征及抗震研究[J].世界地震工程,2018,34(2):033-43. |
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| 作者姓名： | 李晓莉 邹雨鹤 王东升 |
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| 作者单位： | 1. 大连海事大学 道路与桥梁工程研究所, 辽宁 大连 116026;2. 河北工业大学 土木与交通学院, 天津 300401 |
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| 摘 要： | 以汶川地震中拱式体系桥梁震害为主线，总结主拱圈、横向连接系和其它附属构件及减隔震设计拱桥的破坏情况，对国内外拱桥的震害特征及原因进行了剖析。以目前应用数量占优的钢管混凝土肋拱桥为具体背景，对拱式体系桥梁的抗震理论、抗震试验和减隔震设计进行了评述。分析认为拱式体系桥梁竖向和纵桥向抗震存在一定的安全储备，但横桥向存在明显的抗震薄弱环节。针对钢管混凝土肋拱桥横桥向振动及倒塌特点，就目前在拱式体系桥梁中引入防屈曲支撑代替横撑以形成耗能减震结构提出了建议及具体可行设计方式。
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| 关 键 词： | 拱式体系桥梁 震害 横向连接系 钢管混凝土肋拱桥 防屈曲支撑 |
Seismic damage characteristics and research of arch bridges under strong earthquake |
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| LI Xiaoli,ZOU Yuhe,WANG Dongsheng,' target="_blank" rel="external">.Seismic damage characteristics and research of arch bridges under strong earthquake[J].World Information On Earthquake Engineering,2018,34(2):033-43. |
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| Authors: | LI Xiaoli ZOU Yuhe WANG Dongsheng " target="_blank">' target="_blank" rel="external"> |
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| Affiliation: | 1. Institute of Road and Bridge Engineering, Dalian Maritime University, Dalian 116026, China;2. School of Civil Engineering, Hebei University of Technology, Tianjin 300401, China |
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| Abstract: | The seismic damage to arch bridge structures in the Wenchuan earthquake were mainly presented in this paper. The failure characteristics and damage reasons of the main arch ribs, lateral connections and the auxiliary components were summarized, and the seismic behavior of isolation arch bridges was also introduced. As the concrete-filled steel tube arch bridges have been widely constructed in practice, the earthquake response analysis, seismic test and isolation design of arch structures are reviewed taken the concrete-filled steel tube arch bridges as an example. It is found that the seismic resistance capacity of the arch bridges in the vertical and longitudinal directions of the bridges is enough when the bridges are constructed in good conditions of sites, but some obvious weak links in the transverse direction are found under the seismic actions. For improving the seismic capacity of transverse bracing of the arch bridges, according to the characteristics of transverse vibration and collapse mechanism of concrete-filled steel tube arch bridges,some design suggestions that using the buckling restrained braces (BRBs) instead of the traditional transverse braces are proposed to form the energy dissipation systems for earthquake resistance design of arch bridges. |
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| Keywords: | arch bridge structures seismic damage lateral connections concrete-filled steel tube arch bridges buckling restrained braces(BRBs) |
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