大跨度预应力混凝土框架墩受力分析  

Mechanial Analysis on Prestressed Concrete Framework Pier with Long Span

作　　者：郑纪研[1] 单宏伟[1] 曹伟星 胡洋[1] 

机构地区：[1]江苏省交通规划设计院股份有限公司,江苏南京210005

出　　处：《现代交通技术》2016年第1期42-44,共3页Modern Transportation Technology

摘　　要：大跨度预应力混凝土框架墩是常用的桥梁下部结构形式,文章分析了该类结构的受力特性,重点对群桩基础的几种建模方法进行了对比分析。并结合工程实际,总结了考虑群桩基础与框架结构共同工作的计算模型,提出了改善结构受力状态的施工措施,计算方法及施工措施可供类似工程参考。Large span prestressed concrete framework piers is commonly used in substructure. This paper analyzes the structure characteristics of concrete framework piers and modeling methods for the group pile foundation mainly. Combining with engineering practice,the calculation models that take into account of the group pile foundations working together with frame are proposed. The calculation methods and construction measures are put forward to improve structure stress state,which could be taken as reference to the similar structures.

关 键 词：框架墩 群桩基础 预应力混凝土受力分析 计算模型 施工措施 

分 类 号：U443.22[建筑科学—桥梁与隧道工程]