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移动式加载系统中运送动载对支撑架的影响
引用本文:余舜,张娟,王平,郑俊杰. 移动式加载系统中运送动载对支撑架的影响[J]. 华中科技大学学报(城市科学版), 2011, 28(4)
作者姓名:余舜  张娟  王平  郑俊杰
作者单位:1. 华中科技大学土木工程与力学学院,湖北武汉,430074
2. 中国—冶集团有限公司,湖北武汉,430081
摘    要:在对桥梁支撑架进行加载预压时,采用新型可移动式加载系统可以弥补传统加载预压试验中存在的缺陷,但设计时需考虑可移动式加载系统中运输小车的运送荷载作用.通过建立可移动式加载系统的三维分析模型,采用数值模拟的方法分析加载过程中运送动载对桥梁支撑架的影响规律,并分析了不同运送速度条件下运送荷载对桥梁支撑架的动力响应规律.结果表明:随着加载的进行,小车动荷载所占总荷载的比重降低,支撑架杆件动静力响应峰值之间的相对差值逐步降低;随着小车运行速度增大动力响应峰值呈非线性增长,小车运行速度越大动力响应峰值增长越快.

关 键 词:桥梁支撑架  可移动式加载系统  预制块  运送荷载  动力响应  数值模拟

Analysis of the Bridge Scaffold Under the Influence of Transportable Dynamic Load in the Portable Loading System
YU Shun , ZHANG Juan , WANG Ping , ZHENG Jun-jie. Analysis of the Bridge Scaffold Under the Influence of Transportable Dynamic Load in the Portable Loading System[J]. Journal of Huazhong University of Science and Technology, 2011, 28(4)
Authors:YU Shun    ZHANG Juan    WANG Ping    ZHENG Jun-jie
Affiliation:YU Shun1,ZHANG Juan1,WANG Ping2,ZHENG Jun-jie1(1.School of Civil Engineering and Mechanics,Huazhong University of Science and Technology,Wuhan 430074,China,2.China First Metallurgical Construction Group Corporation Ltd,Wuhan 430081,China)
Abstract:Deficiencies of traditional pre-loading tests of bridge scaffolds can be overcome by using new portable loading systems.The effect of transportable loads of small vehicle involved in the portable loading system needs to be considered in design.According to the mechanical characteristics of the new portable loading system,a series of three-dimensional elastic numerical modeling models was established.The influence of transportable loads on bridge scaffolds was calculated and analyzed.Then the results of tran...
Keywords:bridge scaffold  portable loading system  prefabricated concrete block  transportable load  dynamic response  numerical simulation  
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