福平铁路(92.05+2×168+92.05)m公铁合建连续刚构桥设计

Design of(92.05 + 2 × 168 + 92.05) m Combined Rail and Road Continuous Rigid Frame Bridge on Fu Ping Railway

福平铁路在平潭县东海海域采用连续刚构桥跨越东北口水道,孔跨布置为(92.05+2×168+92.05)m,大桥分3幅,中间为1幅双线铁路桥,两侧各有1幅3车道高速公路桥,3幅桥孔跨布置相同,梁部和墩身分离,共用承台和桩基础,介绍该桥的设计情况。计算分析表明该桥结构刚度大,各项指标均满足规范要求,为公铁合建桥梁的设计提供了一种新的思路。

Fu Ping railway spans over the northeast water channel in the East China Sea by continuous rigid frame bridge in Pingtan County. The Bridge is designed with spans of（ 92. 05 ＋ 2 × 168 ＋ 92. 05）m,and divided into three sections. The center section is a double-line railway bridge and the two sections on each end are three-lane highway bridges. The three sections have the same span arrangement with separated beams and piers and common cap and pile foundation. This paper introduces the design of the bridge,and the structure analysis shows that the bridge has great stiffness,meets the specifications and provides new concepts for rail and road bridge design.