水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2012年
5期
33-36
,共4页
钢管混凝土拱桥%拱肋拼装%偏差%力学分析%加固
鋼管混凝土拱橋%拱肋拼裝%偏差%力學分析%加固
강관혼응토공교%공륵병장%편차%역학분석%가고
concrete-filled steel tube arch bridge%rib assembly%deviation%mechanical analysis%reinforcement
为了研究钢管混凝土拱桥拱肋拼装过程中拱轴线偏差引起的受力性能变化规律，利用大型通用有限元计算软件建立了某钢管混凝土拱桥拱轴线不同偏差的力学计算模型，分析了拱肋轴线在不同偏差时焊缝截面的内力和应力的变化规律，提出了对焊缝截面进行加固的技术措施，并建立了与加固前相对应的计算模型，通过计算及对比分析，提出了该拱桥施工时拱轴线允许偏差的合理范围，将计算结果与现行技术规程进行对比，验证了文中所提的加固方案是可行的。
為瞭研究鋼管混凝土拱橋拱肋拼裝過程中拱軸線偏差引起的受力性能變化規律，利用大型通用有限元計算軟件建立瞭某鋼管混凝土拱橋拱軸線不同偏差的力學計算模型，分析瞭拱肋軸線在不同偏差時銲縫截麵的內力和應力的變化規律，提齣瞭對銲縫截麵進行加固的技術措施，併建立瞭與加固前相對應的計算模型，通過計算及對比分析，提齣瞭該拱橋施工時拱軸線允許偏差的閤理範圍，將計算結果與現行技術規程進行對比，驗證瞭文中所提的加固方案是可行的。
위료연구강관혼응토공교공륵병장과정중공축선편차인기적수력성능변화규률，이용대형통용유한원계산연건건립료모강관혼응토공교공축선불동편차적역학계산모형，분석료공륵축선재불동편차시한봉절면적내력화응력적변화규률，제출료대한봉절면진행가고적기술조시，병건립료여가고전상대응적계산모형，통과계산급대비분석，제출료해공교시공시공축선윤허편차적합리범위，장계산결과여현행기술규정진행대비，험증료문중소제적가고방안시가행적。
In order to study the variation of mechanical properties caused by the arch axis deviation during the rib assembly of concrete-filled steel tube arch bridge, the mechanical calculation model is established by using a large general finite element software, and the variation of the internal force and stress in the weld section is analyzed while the arch rib axis is at the different deviation. Based on this, the reinforcement measures for the weld section are proposed, and the corresponding calculation model is established. Through the calculation and comparative analysis, the reasonable deviation of the arch axis during construction is put forward, and then the calculation results are compared with the current technical regulations, verifying that the reinforcement scheme proposed here is feasible.
