| 刘磊.宁波轨道交通1号线声屏障设计中的若干问题研究[J].声学技术,2020,39(3):342~348 |
| 宁波轨道交通1号线声屏障设计中的若干问题研究 |
| Study on some problems in the design of noise barriers for Ningbo rail transit Line 1 |
| 投稿时间：2020-02-12 修订日期：2020-03-16 |
| DOI：10.16300/j.cnki.1000-3630.2020.03.015 |
| 中文关键词: 声屏障 城市轨道交通 宁波1号线 专题研究 景观 材料比选 声学设计 测试 |
| 英文关键词: noise barrier rail transit urban Ningbo rail transit Line 1 project research landscape design material selection acoustical design test |
| 基金项目: |
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| 中文摘要: |
| 在国内的同期城市轨道交通声屏障建设工程中，宁波轨道交通1号线规模最大、投资最多，特别是大量应用了全封闭的声屏障措施，由此带来的诸多问题需要在设计过程中研究解决。结合工程特点，提出了声屏障设计的任务、原则和重点，并进行了若干专题研究。景观造型专题中，采取了多项景观设计措施，并对三种桥面布置方案作了对比分析；根据性能特点，选择了适当的声屏障材料；在全封闭声屏障性能研究中，分别对内部热环境、排烟和声学效果进行了分析，并给出了综合的解决方案。最后介绍了1号线的声屏障设计方案。声屏障实施后的测试结果达到设计预期降噪量，满足环保要求。该工程对国内城市轨道交通声屏障设计具有示范作用。 |
| 英文摘要: |
| The scale and the investment for the noise barrier construction of Ningbo rail transit Line 1 are all largest in the urban rail transit projects over the same period in China. In particular, a large number of fully-enclosed noise barrier measures are adopted. Therefore, many problems need to be researched and solved in the design process. According to the characteristics of this project, the design tasks, principles and emphases of noise barrier are put forward, and some special researches are carried out. In the subject of landscape modeling, a number of landscape design measures are adopted and three kinds of deck layout schemes are compared and analyzed. Appropriate noise barrier materials are selected according to specific properties. In the research on the performance of the fully-enclosed noise barrier, combined with the respective analysis of the internal thermal environment, the influence on the smoke extraction and the acoustic effect, and the comprehensive solutions are given. Finally, the design scheme of the noise barriers of Line 1 is introduced. The test results of the noise barriers after implementation reach the expected noise reduction effects and meet the requirements of environmental protection. This project has a demonstration function to the noise barrier design of domestic urban rail transit. |
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