摘要
连续刚构桥实际合拢温度高于设计合拢温度时,合拢温差将使墩顶产生水平位移,导致结构产生温度附加内力,可通过施加水平顶推力来消除合拢温差的不利影响。以龙潭河特大桥为工程实例,采用消除墩顶水平位移法来计算水平顶推力,且实测数据与理论计算结果基本一致。表明分析方法是可行的。
When the continuous rigid frame bridge s actual closure temperature is higher than the design closure temperature,the closure temperature s difference will cause horizontal displacement at top of pier,and cause the structure to have the temperature intennal force.A horizontal jacking force is exerted to eliminate the adverse effect of closure temperature s difference.Taking the Longtan River Bridge as a practice example,eliminating the horizontal displacement at top of pier method be used,and the measured data and theoretical calculations are basically the same.
出处
《公路工程》
2009年第5期83-86,97,共5页
Highway Engineering
关键词
连续刚构桥
合拢温差
顶推力
墩顶水平位移
continuous rigid-frame bridge
closure temperature s difference
jacking force
horizontal displacement at top of pier
