交通科技
交通科技
교통과기
TRANSPORTATION SCIENCE & TECHNOLOGY
2015年
3期
64-66,67
,共4页
铁路连续梁%支架现浇%悬臂浇筑%内力%预应力束%次内力
鐵路連續樑%支架現澆%懸臂澆築%內力%預應力束%次內力
철로련속량%지가현요%현비요축%내력%예응력속%차내력
railway continuous beam%support casting%cantilever casting%internal force%prestressed strand%secondary internal force
为研究不同施工方法对铁路预应力混凝土连续梁内力、配束的影响，采用 Midas有限元程序，分别对3种不同施工方法的预应力混凝土连续梁进行模拟建模分析。结果表明，不同施工方法引起的连续梁内力变化较大，进而影响配束方式；只有对不同施工方法的内力变化及体系转换过程进行分析，才能保证连续梁在施工阶段及运营阶段的安全适用、经济合理。
為研究不同施工方法對鐵路預應力混凝土連續樑內力、配束的影響，採用 Midas有限元程序，分彆對3種不同施工方法的預應力混凝土連續樑進行模擬建模分析。結果錶明，不同施工方法引起的連續樑內力變化較大，進而影響配束方式；隻有對不同施工方法的內力變化及體繫轉換過程進行分析，纔能保證連續樑在施工階段及運營階段的安全適用、經濟閤理。
위연구불동시공방법대철로예응력혼응토련속량내력、배속적영향，채용 Midas유한원정서，분별대3충불동시공방법적예응력혼응토련속량진행모의건모분석。결과표명，불동시공방법인기적련속량내력변화교대，진이영향배속방식；지유대불동시공방법적내력변화급체계전환과정진행분석，재능보증련속량재시공계단급운영계단적안전괄용、경제합리。
For the study of the influence of different construction methods on internal force and pres-tressed strand configuration of railway prestressed concrete continuous beam,the finite element pro-gram Midas is used to simulate and analyze prestressed concrete continuous beams respectively con-structed by three different methods,the results show that different construction methods has great in-fluence on internal force of continuous beam,which can further affect prestressed strand configura-tion;internal force changes of different construction methods and system conversion process should be analyzed to ensure the safety,applicability and economy of continuous beam in the construction stage and operation stage.
