摘要
对等效梁柱法和极限分析法进行对比分析.结果表明:极限分析法可充分考虑超静定拱结构的承载能力,可用于评估结构在罕遇地震、旧桥加固或超限荷载运输情况下的承载能力;等效梁柱法更符合实际桥梁的受力状况,被大量的规范所采用.与美国和日本桥梁设计规范不同的是,我国的《公路钢筋混凝土及预应力混凝土桥涵设计规范(JTG D62-2004)》和《公路圬工桥涵设计规范(JTG D61-2005)》中,在将拱比拟成等效梁柱时,没有考虑矢跨比的影响.
In this paper, limit analysis method and equivalent beam - column method are analyzed and compared, some ideas can be summarized as the following： limit analysis method can take full account of the ultimate load - carrying capacity of the statically indeterminate arch structure, which can be used for evaluation of the bearing carrying capacity of the structures under special situation, such as rehabilitation of an existed bridge, in case of an overload transportation or a rarely met earthquake; equivalent beam-column method, which is in accordance with the actual bridge more, has been adoptedby a lot of codes ; unlike the bridge design codes of the United States and the Japan, the influ-enee of the span - to - rise ratio of the arch to its ultimate load - carrying capacity has not been consid-ered when an arch is stimulated into a beam-column in the China design code for highway masonry bridges and culverts （JTG D62-2004 ） and the Design code for highway reinforced concrete and prestressed concrete bridges and culverts （ JTG D61 - 2005 ）.
出处
《福州大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第2期282-289,共8页
Journal of Fuzhou University(Natural Science Edition)
基金
交通部西部交通建设科技项目(2008-318-00013)
关键词
钢筋混凝土拱
承载力
模型试验
数值分析
极限分析法
等效梁柱法
reinforced concrete arch
load hearing capacity
model test
numerical analysis
limitanalysis method
equivalent beam-column method
