郑州大学学报（理学版）2017，Vol.49Issue(1)：120-126,7.DOI:10.13705/j.issn.1671-6841.2016288
波形钢腹板连续箱梁的结构参数对其自振影响分析
Influence of Structural Parameters on the Vibration of Continuous Box Girder with Corrugated Steel Webs
摘要
Abstract
In order to analyze the influence of the structural parameters of the continuous box girder bridge with corrugated steel webs on the self-vibration, the Zhengzhou Longhai Elevated Road Changzhuang reservoir bridge was taken as example, by using ansys software,to build the fine finite element model of the 3 spans continuous bridge.The influence of the structural parameters such as prestressed, angle of the plate, width of the plate and thickness of the web, as well as diaphragm number were all analyzed.Results indicated that the prestressed tension had an stress softening impact to decrease of the total stiffness of the structure.Therefore the vibration frequency of composite box girder with corrugated steel webs was reduced.However, the concrete was in a complex stress state because of prestressed tension,and the elasticity modulus of the material was different from that of the uniaxial stress state.Through revising elastic modulus, the vibration frequency would increase along with the increase of the tensile force.And the results could be consistent with the experimental results.With the increase of the angle of the plate, the vibration frequency was shown to increase at first and then decrease, then there would be a small increase.With the increase of the width, the vibration frequency was shown to increase at first and then decrease.With the increase of the thickness, vertical vibration frequency, longitudinal vibration and torsional frequency all increased, but transverse vibration frequency decreased.The torsional vibration frequency could be obviously increased by increasing the number of diaphragm, but the growth rate of the torsional frequency gradually decreased with the increase of the number of the diaphragm.关键词
结构参数/波形钢腹板组合箱梁/连续梁/自振频率Key words
structural parameters/composite box girder with corrugated steel webs/continuous girder/vibration frequency分类
交通工程引用本文复制引用
李杰,周亚鹏,陈淮..波形钢腹板连续箱梁的结构参数对其自振影响分析[J].郑州大学学报（理学版）,2017,49(1):120-126,7.基金项目
河南省基础与前沿技术研究项目(162300410264). （162300410264）
