摘要
主要介绍了广西某高速公路特大桥的设计与计算。该桥为连续刚构桥,跨径布置为131 m+198 m+131 m,边中跨比例0.66,大于一般同类桥梁。采用MIDAS/Civil进行了有限元静力和抗震分析,并针对新建大跨径预应力混凝土连续箱梁桥在运营阶段的跨中下挠和结构开裂问题,设置了预应力备用束。
The article mainly introduces the design and calculation of a large expressway bridge in Guangxi. This bridge is a continuous rigid frame bridge with the span layout of 131 m+198 m+131 m and the sidespan and midspan proportion of 0.66 larger than the general same bridges. The article introduces the finite element static and seismic analysis by MIDAS/Civil. The back-up prestressed strand is set up for the span deflection and structure crack of the newly built long-span prestressed concrete continuous box girder bridge in the operation period.
出处
《城市道桥与防洪》
2013年第9期87-90,10-11,共4页
Urban Roads Bridges & Flood Control
关键词
连续刚构
有限元
静力
体外预应力
continuous rigid frame
finite element
static
external prestressing
