连续刚构桥纵向顶推刚度计算模式比较研究  

The Comparative Study of Continuous Rigid Frame Bridge Longitudinal Incremental Launching Stiffness

作　　者：陈从春[1] 熊飞[1] 

机构地区：[1]上海应用技术学院城市建设与安全工程学院,上海201418

出　　处：《公路工程》2016年第1期163-166,187,共5页Highway Engineering

基　　金：上海应用技术学院科研项目(10110L140007)

摘　　要：连续刚构桥施加跨中合龙顶推力后,墩顶水平位移实测值和理论计算值往往相差很大。比较了群桩基础不同计算模式,并结合实桥施工数据,对合龙顶推力作用下的墩顶水平位移进行了计算分析。研究表明,以双柱刚架模式来模拟群桩基础,从而计算连续刚构桥的纵向抗推刚度,理论计算与实际位移最接近。There are much difference between the measured horizontal displacement and theoretical value of the pier top when the continuous rigid frame bridge jacked by horizontal closure force. The pile group foundation theoretic models are compared and the horizontal displacement of pier top is calculated under the practical bridge construction. The research proved that the double-column-frame-model theoretical value is more closed to that of measured.

关 键 词：连续刚构桥 合龙 顶推力 墩顶水平位移 群桩 刚度 

分 类 号：U448.23[建筑科学—桥梁与隧道工程]