四川水泥
四川水泥
사천수니
Sichuan Cement
2015年
12期
309-309,7
,共2页
连续刚构%桥墩高差%反应谱分析%地震响应
連續剛構%橋墩高差%反應譜分析%地震響應
련속강구%교돈고차%반응보분석%지진향응
continuous rigid-frame bridge%elevation difference of pier%response spectrum method%seismic response
以某大跨度预应力混凝土连续刚构铁路桥为工程背景，研究了桥墩高差对大跨度预应力混凝土连续刚构桥地震响应的影响。研究表明：随着墩高高差的增大，主梁各关键截面位置和桥墩墩顶处纵桥向位移减小，当2#墩墩高在41.7m时，上部结构和下部结构各截面位移值和内力值较其他墩高变化很明显。研究结果可为此类大跨度预应力混凝土连续刚构桥梁的抗震设计提供参考。
以某大跨度預應力混凝土連續剛構鐵路橋為工程揹景，研究瞭橋墩高差對大跨度預應力混凝土連續剛構橋地震響應的影響。研究錶明：隨著墩高高差的增大，主樑各關鍵截麵位置和橋墩墩頂處縱橋嚮位移減小，噹2#墩墩高在41.7m時，上部結構和下部結構各截麵位移值和內力值較其他墩高變化很明顯。研究結果可為此類大跨度預應力混凝土連續剛構橋樑的抗震設計提供參攷。
이모대과도예응력혼응토련속강구철로교위공정배경，연구료교돈고차대대과도예응력혼응토련속강구교지진향응적영향。연구표명：수착돈고고차적증대，주량각관건절면위치화교돈돈정처종교향위이감소，당2#돈돈고재41.7m시，상부결구화하부결구각절면위이치화내력치교기타돈고변화흔명현。연구결과가위차류대과도예응력혼응토련속강구교량적항진설계제공삼고。
With the long-span continuous pre-stressed concrete rigid-frame bridges as the engineering back- ground, the influence of elevation difference of pier on seismic response of long-span continuous pre-stressed concrete rigid-frame bridges is researched. The result of our research shows that the greater elevation difference of pier is, the smaller displacement of each key section of girder and top location of bridge pier is. Compared with other high pier, the cross section displacement and internal force value of the upper structure and lower structure change obviously at 41.7 m high of 2 # pier. The research results may be applied to earthquake resistance design of the long-span continuous pre-stressed concrete rigid-frame bridge.
