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铁路桥梁钢结构
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  steel railway bridge
     To study the reliability of the design of Tianxingzhou Road/rail Yangtze River Bridge, the finite element model of the bridge is built with Ansys, and live load combinations are analyzed, calculated and compared based on its initial state. Element stress under each load combination is calculated based on criterion of steel railway bridge design, through which the worst load combination is found.
     为研究天兴洲公铁两用长江大桥设计方案的可靠性,运用Ansys软件建立大桥的有限元模型,在成桥状态基础上,分析、计算和比较活载的荷载工况,依照铁路桥梁钢结构设计规范计算各工况下杆件的应力,从而得到最危险的荷载工况;
短句来源
  “铁路桥梁钢结构”译为未确定词的双语例句
     THE STEEL STRUCTURAL DESIGN AND MARKET OPPORTUNITY OF CHINA RAILWAY BRIDGE
     中国铁路桥梁钢结构设计及市场机遇
短句来源
     It was included in the Code for Design on Steel Structure of Railway Bridge TB10002 2 99 issued and implemented in 2000.
     并被纳入 2 0 0 0年公布实施的《铁路桥梁钢结构设计规范》TB10 0 0 2 2 99。
短句来源
     The first group of experiments is fatigue tests carried out by using large size samples to imitate 12 kinds of welded fatigue details with 44mm plate butt weld, integral joint and precision cutting technology in order to find out the sensitive places where the fatigue crack tends to create and their S-N curve equations. Those fatigue resistance obtained from the tests renewed the design code, and the conclusion had played a guide role for the safety design in Wuhu Changjiang Bridge.
     ⑴通过大尺寸试样疲劳试验模拟44mm 钢板对接、整体节点、精密焰切工艺等12 种焊接构造细节,得到疲劳裂纹敏感部位和试验方程,所得疲劳抗力更新了规范,结论对芜湖长江大桥安全设计起到指导作用,研究成果纳入铁路桥梁钢结构设计规范TB 10002.2-99;
短句来源
     Code for design on steel structure of railway bridge (TB10002.2-2005) based on many experiments has some property such as advancement, applicability and reliability. It can show our manufacture craft and level, and the real condition of bridge structures.
     在长期大量结构疲劳试验基础上制定的铁路桥梁钢结构设计规范(TB10002.2—2005),具有先进性、适用性和可靠性的特点,比较真实的反映了我国的制造工艺和水平,以及桥梁结构的实际工作状况。
短句来源
     The fundamental problem is also pointed out in stipulating for the limit value of lateral rigidity of continuous steel truss girder bridge in the design criterion for steel structure of railway bridge in China. It is necessary to modify the limit value of lateral rigidity of railway bridge based on the theory of random energy analysis of train derailment on the bridge.
     最后,指出我国《铁路桥梁钢结构设计规范》中制订连续钢桁梁桥横向刚度限值时存在的问题,论证了按列车脱轨能量随机分析理论重新制订桥梁横向刚度限值的必要性。
短句来源
  相似匹配句对
     THE STEEL STRUCTURAL DESIGN AND MARKET OPPORTUNITY OF CHINA RAILWAY BRIDGE
     中国铁路桥梁结构设计及市场机遇
短句来源
     Methods of Corrosion Protection for Steel Structure Bridges
     结构桥梁的防腐蚀方法
短句来源
     Corrosion-controlling of the Steel Struefure Bridge
     结构桥梁的腐蚀控制
短句来源
     CTOD performance of railway bridge base steels and weld seams
     铁路桥梁及焊缝的CTOD性能
短句来源
     A Study on Anti-Corrosion Technology of Steel Structural Bridge
     结构桥梁防腐蚀工艺研究
短句来源
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  steel railway bridge
Prediction of fatigue life and the technicoeconomic efficiency of high-strength steel railway bridge structures
      


Wuhu Yangtze River bridge is a new type of railway highway bridge with the longest span and the largest scale in China at the end of 20th century. A series of new technology, new structure style, new steel material and new processing technology, have been used in the design. As one of the key technology research projects of Wuhu Bridge, this article will introduce the fatigue design method and the fatigue model test for some important structural details in Wuhu Bridge. That includes general theory, the design...

Wuhu Yangtze River bridge is a new type of railway highway bridge with the longest span and the largest scale in China at the end of 20th century. A series of new technology, new structure style, new steel material and new processing technology, have been used in the design. As one of the key technology research projects of Wuhu Bridge, this article will introduce the fatigue design method and the fatigue model test for some important structural details in Wuhu Bridge. That includes general theory, the design theory and method adopted by Wuhu Bridge, the fatigue test with high tonnage, model description of some details based on the destroyed samples, as well as the results of the fatigue tests. This research achievement was provided promptly to bridge design, and therefore insured the design quality of the bridge and the building time for the project. It was included in the Code for Design on Steel Structure of Railway Bridge TB10002 2 99 issued and implemented in 2000.

芜湖长江大桥是中国 2 0世纪末修建的跨度最大、规模最大的公铁两用新型桥梁 ,设计中采用了一系列新技术———新结构、新材料、新工艺。本文作为芜湖桥关键技术研究项目之一 ,对钢梁疲劳设计方法以及对重要构造细节疲劳试验研究予以介绍 ,包括一般理论、芜湖桥研究采用的设计理论和方法、所进行的大吨位疲劳试验、试件破坏的形态描述和所得到的疲劳试验结果。该研究成果及时提供给大桥设计者 ,保证了大桥的设计质量和建设工期。并被纳入 2 0 0 0年公布实施的《铁路桥梁钢结构设计规范》TB10 0 0 2 2 99。

To study the reliability of the design of Tianxingzhou Road/rail Yangtze River Bridge, the finite element model of the bridge is built with Ansys, and live load combinations are analyzed, calculated and compared based on its initial state. Element stress under each load combination is calculated based on criterion of steel railway bridge design, through which the worst load combination is found. Five-grade failure tree is generated based on fault analysis algorithm of minimum load increment with the APDL (Ansys...

To study the reliability of the design of Tianxingzhou Road/rail Yangtze River Bridge, the finite element model of the bridge is built with Ansys, and live load combinations are analyzed, calculated and compared based on its initial state. Element stress under each load combination is calculated based on criterion of steel railway bridge design, through which the worst load combination is found. Five-grade failure tree is generated based on fault analysis algorithm of minimum load increment with the APDL (Ansys Parametric Design Language) in data processing. The analysis indicates: The design is reliable, some key elements are very important for the bridge reliability, and reinforcement of those elements would efficiently improve the bridge reliability; and APDL language of Ansys software could be very convenient for model building and data processing of complex structures.

为研究天兴洲公铁两用长江大桥设计方案的可靠性,运用Ansys软件建立大桥的有限元模型,在成桥状态基础上,分析、计算和比较活载的荷载工况,依照铁路桥梁钢结构设计规范计算各工况下杆件的应力,从而得到最危险的荷载工况;以最小荷载增量准则为失效分析理论,利用Ansys的APDL参数化设计语言进行后处理,生成大桥前五级失效历程的失效树。分析结果表明:该大桥设计方案可靠性较高;某些关键杆件对桥梁的可靠性尤其重要,加强这些杆件能高效提高设计方案的可靠性;Ansys软件的APDL参数化设计语言对复杂结构的建模和数据处理尤为方便。

Using automatic control theory,mechanical mechanism of derailment of train running on a bridge was discussed.It is found that the derailment results from losing stability of transverse vibration of train-bridge time-variant system.According to the theory of random energy analysis of train derailment on the bridge,a derailment case of freight train running on Youshui Bridge in Jiaoliu line was calculated and analyzed,respectively.The calculated results are corresponded to the real results,and the time history...

Using automatic control theory,mechanical mechanism of derailment of train running on a bridge was discussed.It is found that the derailment results from losing stability of transverse vibration of train-bridge time-variant system.According to the theory of random energy analysis of train derailment on the bridge,a derailment case of freight train running on Youshui Bridge in Jiaoliu line was calculated and analyzed,respectively.The calculated results are corresponded to the real results,and the time history curves of vibration response of the system were obtained when the train derails.Meanwhile,before reinforcing the bridge,the suggested limit value of velocity for preventing train on the bridge from derailment was presented,which is consistent with the limit velocity value obtained by field test.The fundamental problem is also pointed out in stipulating for the limit value of lateral rigidity of continuous steel truss girder bridge in the design criterion for steel structure of railway bridge in China.It is necessary to modify the limit value of lateral rigidity of railway bridge based on the theory of random energy analysis of train derailment on the bridge.

结合自动控制理论,研究了桥上列车脱轨的力学机理,发现桥上列车脱轨是列车-桥梁时变系统横向振动丧失稳定的结果。根据桥上列车脱轨能量随机分析理论,对焦柳线酉水大桥上货物列车是否脱轨进行了计算和分析,并得到了列车脱轨时此系统振动响应的时程曲线;同时,提出了该桥在不采取加固措施的条件下预防列车脱轨的限速建议值,该值与该桥实车振动试验所确定的限速值一致。最后,指出我国《铁路桥梁钢结构设计规范》中制订连续钢桁梁桥横向刚度限值时存在的问题,论证了按列车脱轨能量随机分析理论重新制订桥梁横向刚度限值的必要性。

 
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