人行天桥人致振动及舒适度评价研究
发布时间：2018-11-05 14:40
【摘要】：人行桥振动问题由来已久，但直到英国千禧桥发生的桥梁过度振动事件，大量的研究才投入到人行桥的人致振动及其舒适度标准上。随着土木工程技术的发展，轻质、大跨度、低阻尼比的桥梁结构越来越多，这样的新型桥梁方便了人民群众的出行，也美化了城市景观，但也正是人致振动问题最严重的桥梁结构。目前，国内外已经形成了大量的科研成果，并在很多国家最新的人行桥设计规范得到了应用，取得了显著的社会和经济效益。随着我国土木工程建设的发展，人行桥的建设日益增多，人行桥的人致振动也成了我国桥梁建设中的一个重要问题，需要认真研究如何将已有的科学研究成果和外国规范的先进经验融入到我国人行桥设计中。目前国内的研究大多集中在人行桥的人致振动计算理论和套用国外规范的规定进行计算方面，少有涉及人行桥人致振动的实桥测试结果，难以了解这些理论和计算方法对于国内人行桥的适用情况。因此，本文依托一座人行桥实例，对人行桥人致振动的计算方法、人行桥人致振动舒适性测试方法、人行桥人致振动实测等进行了研究，内容主要如下： 1.使用ANSYS建立桥梁的有限元模型，通过多种方法计算桥梁的人致振动响应。并对不同方法的计算结果进行对比。 2.通过单人和多人的人行桥行走试验，测试行人行走时桥梁的振动响应。与计算结果进行对比，验证行走试验测试方法的实用性，同时评估不同加速度条件下的行人舒适度感受。 3.测试日常使用中桥梁的振动响应，与理论计算的结果进行对比。评估理论计算方法的适用性。
[Abstract]:The vibration problem of pedestrian bridge has a long history, but it is not until the excessive vibration of bridge occurred at Millennium Bridge in England that a great deal of research has been devoted to the standard of human induced vibration and its comfort degree of pedestrian bridge. With the development of civil engineering technology, there are more and more bridges with light weight, large span and low damping ratio. This new type of bridge facilitates the travel of the people and beautifies the urban landscape. But it is also the most serious problem of the bridge structure caused by human vibration. At present, a large number of scientific research achievements have been formed at home and abroad, and have been applied in many countries in the latest pedestrian bridge design code, and achieved remarkable social and economic benefits. With the development of civil engineering construction in our country, the construction of pedestrian bridge is increasing day by day. It is necessary to carefully study how to integrate the existing scientific research results and the advanced experience of foreign norms into the design of pedestrian bridges in China. At present, most of the domestic researches are focused on the calculation theory of artificial vibration of footbridge and the application of the rules of foreign codes for calculation. There are few real bridge test results related to the man-made vibration of footbridge. It is difficult to understand the applicability of these theories and calculation methods to domestic footbridges. Therefore, based on an example of a pedestrian bridge, this paper studies the calculation method of the human-induced vibration of the footbridge, the testing method of the human-induced vibration comfortableness of the footbridge, the measurement of the human-induced vibration of the footbridge, and so on. The main contents are as follows: 1. The finite element model of the bridge is established by using ANSYS, and the human vibration response of the bridge is calculated by a variety of methods. The calculation results of different methods are compared. 2. The vibration response of the bridge was tested by walking test of single and multi-person footbridge. Compared with the calculated results, the practicability of the walking test method is verified, and the pedestrian comfort feeling under different acceleration conditions is evaluated at the same time. 3. The vibration response of the bridge in daily use is tested and compared with the theoretical results. To evaluate the applicability of the theoretical calculation method.
【学位授予单位】：北京市市政工程研究院
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U448.11
本文编号：2312386
[Abstract]:The vibration problem of pedestrian bridge has a long history, but it is not until the excessive vibration of bridge occurred at Millennium Bridge in England that a great deal of research has been devoted to the standard of human induced vibration and its comfort degree of pedestrian bridge. With the development of civil engineering technology, there are more and more bridges with light weight, large span and low damping ratio. This new type of bridge facilitates the travel of the people and beautifies the urban landscape. But it is also the most serious problem of the bridge structure caused by human vibration. At present, a large number of scientific research achievements have been formed at home and abroad, and have been applied in many countries in the latest pedestrian bridge design code, and achieved remarkable social and economic benefits. With the development of civil engineering construction in our country, the construction of pedestrian bridge is increasing day by day. It is necessary to carefully study how to integrate the existing scientific research results and the advanced experience of foreign norms into the design of pedestrian bridges in China. At present, most of the domestic researches are focused on the calculation theory of artificial vibration of footbridge and the application of the rules of foreign codes for calculation. There are few real bridge test results related to the man-made vibration of footbridge. It is difficult to understand the applicability of these theories and calculation methods to domestic footbridges. Therefore, based on an example of a pedestrian bridge, this paper studies the calculation method of the human-induced vibration of the footbridge, the testing method of the human-induced vibration comfortableness of the footbridge, the measurement of the human-induced vibration of the footbridge, and so on. The main contents are as follows: 1. The finite element model of the bridge is established by using ANSYS, and the human vibration response of the bridge is calculated by a variety of methods. The calculation results of different methods are compared. 2. The vibration response of the bridge was tested by walking test of single and multi-person footbridge. Compared with the calculated results, the practicability of the walking test method is verified, and the pedestrian comfort feeling under different acceleration conditions is evaluated at the same time. 3. The vibration response of the bridge in daily use is tested and compared with the theoretical results. To evaluate the applicability of the theoretical calculation method.
【学位授予单位】：北京市市政工程研究院
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U448.11
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相关期刊论文 前3条
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，本文编号：2312386
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