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铁路大跨桥梁新型高墩抗震性能研究
引用本文:李小军.铁路大跨桥梁新型高墩抗震性能研究[J].兰州铁道学院学报,2009,28(4):49-53.
作者姓名:李小军
作者单位:中铁第一勘察设汁院集团有限公司桥隧处,陕西西安,710043 
摘    要:结合黄陵-韩城-侯马铁路可行性研究中的大浴河特大桥主桥的方案研究,提出了一种新型铁路高墩——四柱式桥墩.分析表明,在只研究桥墩刚度时,四柱式桥墩可以采用常用的梁单元进行建模.在具有相同自振特性的前提下,分别采用抛物线形及直线形的四柱式桥墩的主桥,其桥墩混凝土的用量相时于传统矩形空心墩,要分别减少约15%及20%.由于四柱式桥墩混凝土用量的减少及在构造上允许墩柱间隔板开裂,其抗震性能优于矩形空心墩.

关 键 词:铁路高墩  四柱式桥墩  力学性能

Research on Seismic Performance of Neotype Tall Pier for Long-span Railway Bridges
LI Xiao-jun.Research on Seismic Performance of Neotype Tall Pier for Long-span Railway Bridges[J].Journal of Lanzhou Railway University,2009,28(4):49-53.
Authors:LI Xiao-jun
Institution:LI Xiao-jun (The First Railway Survey and Design Group Co, Ltd. ,Xi'an 710043,China)
Abstract:With the project study on Dayuhe Bridge of Huangling-Hancheng-Houma Railway in course of feasibility study,a new type of railway high-pier(four-pillar pier)was introduced. It was found that beam element could 13e used in course of modeling about the four-pillar pier when paid more attention to the stiffness of the pier. Under the premise of the same vibration characteristics, the masonry work of the bridge which has four-pillar pier with parabola or line shape has reduced about 15% or 20% compared with the bridge which has traditional rectangular hollow pier. The seismic performance of four-pillar pier bridge was superior to the bridge with rectangular hollow pier because the reduction of concrete and the permission of cracking.
Keywords:railway high pier  four-pillar pier  seismic performance
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