科技创新导报
科技創新導報
과기창신도보
Science and Technology Innovation Herald
2015年
25期
60-61
,共2页
漂浮体系%拱桥%制动力%梁轨相互作用
漂浮體繫%拱橋%製動力%樑軌相互作用
표부체계%공교%제동력%량궤상호작용
Floating Type%Arch Bridge%Braking Force%Interaction Force Between Beam and Rail
以某漂浮体系中承式拱桥为工程背景,采用桥上无缝线路分析理论,建立制动力作用下的梁轨相互作用模型,研究了拱肋横梁与桥面的纵向相对位移、梁轨快速相对位移及钢轨制动附加力.结果表明:当偏安全考虑、不计硬木的弹性约束作用时,拱肋横梁与桥面的纵向相对位移最大值为1.8 mm,梁轨快速相对位移不超过0.8 mm,该纵向限位方案能够满足安全运营要求.
以某漂浮體繫中承式拱橋為工程揹景,採用橋上無縫線路分析理論,建立製動力作用下的樑軌相互作用模型,研究瞭拱肋橫樑與橋麵的縱嚮相對位移、樑軌快速相對位移及鋼軌製動附加力.結果錶明:噹偏安全攷慮、不計硬木的彈性約束作用時,拱肋橫樑與橋麵的縱嚮相對位移最大值為1.8 mm,樑軌快速相對位移不超過0.8 mm,該縱嚮限位方案能夠滿足安全運營要求.
이모표부체계중승식공교위공정배경,채용교상무봉선로분석이론,건립제동력작용하적량궤상호작용모형,연구료공륵횡량여교면적종향상대위이、량궤쾌속상대위이급강궤제동부가력.결과표명:당편안전고필、불계경목적탄성약속작용시,공륵횡량여교면적종향상대위이최대치위1.8 mm,량궤쾌속상대위이불초과0.8 mm,해종향한위방안능구만족안전운영요구.
The engineering background of this paper is a half-through arch bridge of floating type. Base on the theory of CWR on bridge, a model of interaction between beam and rail under braking force was built to analyze relative displacement between arch rib's cross-beam and deck, rapid relative displacement between beam and rail, as well as additional force in rail. For safety reason, the elastic constraint effect of hardwood was not considered. The calculation results show that the relative displacement between arch rib's cross-beam and deck is 1.8 mm, the rapid relative displacement between beam and rail is 0.8 mm, and thus the longitudinal stop design meets safety operation requirements.
