摘要
河口黄河大桥位于兰州市西固区河口镇,是兰州南绕城高速公路的控制型工程。桥梁上部结构为(177+360+177+2×40+5×35)m预制箱梁与变截面连续梁组合桥,下部为柱式墩台。桥基主要持力层为白垩系黏土岩,属于弱膨胀性软岩。确定单桩承载力是该桥勘察设计的主要任务之一。基于自平衡法静载试验,对桥址白垩系黏土岩的单桩承载特性进行了系统研究。
The Hekou Yellow River Bridge is located at Hekou Town in Xigu District of Lanzhou City. It is the control engineering of South Ring Expressway in Lanzhou. The superstructure of bridge is a combined bridge of precastboxgirderandcontinuousbeamwithvariablecross-section(177m+360m+177m+2×40m+5×35m),and the substructure is a cylinder pier platform. The main bearing stratum of pile foundation is the cretaceous clay rock, which belongs to the weak swelling soft rock. The determination of the bearing capacity of single pile is one of the main tasks in the survey and design of this bridge. Based on the static load test by self-balanced method, the bearingcharacteristicsofsinglepileofthecretaceousclayrockinbridgesitearesystemicallystudiedinthispaper.
出处
《城市道桥与防洪》
2016年第10期100-103,14,共4页
Urban Roads Bridges & Flood Control
关键词
自平衡法
单桩承载力
黏土岩
河口黄河大桥
self-balanced method
bearingcapacityofsinglepile
clayrock
Hekou Yellow River Bridge
