高桩码头PHC管桩设计极限状态的曲率计算方法  

Curvature Calculation Method of PHC Pipe Pile Used in High Pile Wharf under Design Limit States

作　　者：阮健[1] 陶桂兰[1] 

机构地区：[1]河海大学港口海岸与近海工程学院,江苏南京210098

出　　处：《水电能源科学》2016年第4期92-95,共4页Water Resources and Power

摘　　要：参照美国码头工程抗震设计标准,确定了高桩码头结构正常使用极限状态、损伤控制极限状态和不倒塌极限状态对应的材料极限应变限值,应用纤维模型法对高桩码头所采用的PHC管桩进行了截面弯矩—曲率分析。根据三种设计极限状态下材料的应变限值,计算确定了PHC管桩相应的截面曲率,讨论了不同轴压比和纵向配筋率对极限状态下桩截面曲率的影响,并考虑轴压比、纵向配筋率和管桩截面直径三个因素,对截面曲率进行拟合,获得了各设计极限状态下PHC管桩截面曲率计算回归公式。算例分析表明,该拟合公式可为基于位移的高桩码头抗震设计提供参考。The ultimate strain limits of serviceability limit state,damage control limit state and non-collapse limit state were determined respectively by reference to the American seismic design criteria for wharf engineering.According to the strain limit values of the materials under the three design limit states,the corresponding section curvatures of PHC pipe pile were obtained by using moment-curvature analysis.And the influence of axial compression ratio and longitudinal reinforcement ratio on the curvatures of the pile under the ultimate states was discussed.Considering the axial compression ratio,longitudinal reinforcement ratio and section diameter of three factors,the regression formula of curvature calculation is obtained by fitting the section curvatures.The formula provides a basis for the direct displacement-based seismic design of the high-piled wharf.

关 键 词：PHC管桩 极限状态 曲率分析 回归公式 

分 类 号：TV314[水利工程—水工结构工程]