成灌铁路桥梁设计.pdf

成灌铁路桥梁设计陈列
文章编号:1003-4722(2011)05-0059-05
成灌铁路桥梁设计
陈
(中铁二院工程集团有限公司,四川成都610031)
摘要:成灌铁路客运专线全线以高架桥为主。为满足灾后科学重建的要求,通过优化桥面
布置减小了桥梁宽度,选用外形圖顺的箱形載面梁和桥墩增璠了桥梁景观效果,采用与相邻简支梁
平顺过渡的连续梁外形使桥梁线形流畅,采用配有阻尼器的盆式橡胶支座以降低连续梁主墩的地
作用,对无醯轨道道盆连续梁桥纵向分幅减小了桥梁横向仲編量,在上跨公路的框架墩柱上设竖
向拉槽改善了桥墩视觉效果,在长盖梁框架墩边柱顶设置支座以减小温度作用,结合结构整体受力
分析、局部应力分析及动力分析,确保了桥梁设计满足安全性、舒适性、经济合理性、可持续发展和
景观要求。
关鍵词;客运专线;铁路桥;简支梁桥;连续梁桥;优化设计;桥梁设计
中图分类号:U442.5;U48.13文献标志码:A
Design of Bridges on Chengdu-dujiangyan
Passenger Dedicated Railway
CHEN Lie
( China Railway Eryuan Engineering Group Co, Itd, Chengdu 610031, China)
Abstract: The bridges on the whole line of Chengdu-dujiangyan Passenger Dedicated Railway
mainly employ the viaducts. To meet the scientific reconstruction requirements after the earth
quake, the deck width of the bridges was reduced through optimization of deck arrangement. The
box girders and piers with smooth round appearances were used to protrude landscape effect, the
continuous girders with smooth transition appearances were used at their adjacent simply-suppor
ted girders to ensure gentle and graceful lines of the bridges and the rubber pot bearings furnished
with dampers were used on the main piers of the continuous girders to decrease earthquake ac-
tion. For the continuous girder bridges laid out with ballastless track switches, the decks of the
bridges were designed as the separate ones in the longitudinal direction to reduce transverse ex-
pansion amounts. For the frame piers of the bridges spanning highways, the columns of the piers
were vertically slotted to improve visual impact and at the tops of the side columns of the fame
piers with long capping beams, the bearings were set to reduce temperature effect. The global
forces, local stress and dynamic forces of the structures of the bridges were all analyzed to conse
quently ensure that the bridges could meet the requirements of safety, comfort, economy, ration
ality, sustainable development and landscape
Key words: passenger dedicated railway; railway bridge; simply-supported girder bridge
continuous girder bridge; optimization design; bridge design
收稿日期:2011-03-29
作者简介:陈列(1962-),男,教授级高工,1983年毕业于郑州工学院工业与民用建筑专业,工学学士,1988年毕业于西南交通大学桥梁隧
道及结构工程专业,工学硕士(chentaidao(asina.com)。