A0声屏障固定尺寸
道路声屏障计算机辅助设计
摘要
现如今我国城市建设迅猛，国民私家车保有量显着提高，据不完全统计，目前全国民用汽车保有量达到7619万辆。随之而来的交通噪声污染不仅对道路沿线两侧居民的正常生活造成了相当程度的干扰，还加剧了交通事故的发生。针对此情况，国内外大都在道路两侧设立声屏障来降低交通噪声污染，虽有一定的降噪效果，但程度有限，还需进行复杂的设计计算和模拟。
目前有关声屏障设计方面的不少，但并没有一套完整的设计流程，而且在对声屏障进行计算机设计时，某一个参数的改变，往往对障板整体设计带来很大影响。本针对声屏障的设计计算，参考《声屏障声学设计和测量规范》，安排了一套切实可行的完整的设计流程，并在此基础上开发了一款道路声屏障计算机辅助设计的软件。该软件通过输入实地测量的数据，经预先设计好的计算方法，计算出声屏障的各个设计参数，然后根据已算好的参数，自动生成对应型号的声屏障障板，供设计人员使用。
通过输入模拟数据来检验此软件的运行，在数据的整体准确性和声屏障的计算机绘图效率上来说，都较一般声屏障的设计有显着提升。因此，本不仅给设计人员带来一套清晰完整的设计流程，而且所设计的软件也会大幅提高制图效率，对声屏障的设计会有较大程度的提高。
关键词：噪声声屏障计算机辅助设计
ABSTRACT
With the acceleration of urban construction and the improvement of per capita income, the number of private car ownership has increased significantly, according to incomplete statistics, the current national civilian car ownership reached 76 million 190 thousand. The ensuing traffic noise pollution not only caused a considerable degree of disturbance to the normal life of residents on both sides of the road, but also exacerbated the occurrence of traffic accidents. In view of this situation, most of the domestic and foreign sound barriers are set up on both sides of the road to reduce traffic noise pollution, although there is a certain noise reduction effect, but the degree is limited, the need for complex design and simulation.
The sound barrier design aspects of the paper a lot, but does not have a complete design flow, and the sound barrier in computer design, a parameter change, often have a great impact on the overall design of baffle. This thesis focuses on the design of sound barrier calculation, reference "noise barrier acoustical design and measurement standards", designed a complete design process is feasible, and on the basis of the development of a computer aided design software of noise barrier. The software input through the field measurement data, the calculation method of pre designed well, calculate the various design parameters of the sound barrier, then according to the good parameters, automatic generation of sound barrier baffle the corresponding models, for designers to use.
Through the input of simulation data to test the operation of the software, the overall accuracy of the data and the efficiency of the computer drawing of the barrier, are significantly improved than the general design of the sound barrier. Therefore, this paper not only brings a set of clear and complete design process, but also greatly improves the efficiency of the design of the software, the design of the sound barrier will be greatly improved.
Key words： Noise Sound barrier Computer aided design
目录
摘要I
ABSTRACT II
1绪论- 3 -
1.1我国道路交通发展状况- 3 -
1.2我国道路交通噪声污染现状和带来的危害- 3 -
1.3采用声屏障治理道路交通噪声污染- 4 -
1.4国内外道路声屏障适用性发展状况- 5 -
1.5研究内容及意义- 5 -
2道路声屏障降噪机理- 7 -
2.1相关名词解释- 7 -
2.1.1声屏障- 7 -
2.1.2隔声量- 7 -
2.1.3吸声系数- 7 -
2.1.4声屏障插入损失- 7 -
2.1.5降噪系数- 7 -
2.2道路声屏障的降噪机理- 8 -
2.2.1透射（transmission) - 8 -
2.2.2反射（reflection) - 8 -
2.2.3绕射（diffraction） - 9 -
3.对声屏障进行结构设计- 10 -
3.1确定声屏障设计目标值- 10 -
3.1.1噪声保护对象的确定- 10 -
3.1.2受声区的确定- 10 -
3.1.3声屏障设立初的背景噪声值- 10 -
3.1.4声屏障设计目标值的确定- 10 -
3.2位置的确定- 11 -
3.3几何尺寸的确定- 11 -
3.3.1长度- 11 -
3.3.2高度- 11 -
3.3.3厚度- 12 -
3.4声学设计- 12 -
3.4.1绕射声衰减- 12 -
3.4.2反射降低量- 13 -
3.4.3透射减小量- 13 -
3.4.4插入损失- 14 -
3.5结构设计- 14 -
3.5.1声屏障的隔声降噪设计- 14 -
3.5.2声屏障吸声降噪设计- 16 -
3.5.3密封结构的设计- 16 -
3.5.4景观设计- 16 -
4．声屏障计算机实现- 17 -
4.1声屏障降噪目标值主要程序- 17 -
4.2尺寸结构设计主要程序- 18 -
4.3声学参数计算的主要程序- 18 -
4.4障板参数统计主要程序- 19 -
4.5cad图纸- 22 -
5结论- 23 -
附录一- 25 -
附录二- 31 -
致谢- 36 -
声屏障降噪目标值主要程序
设计所包含文件
道路声屏障的降噪机理
设计字数统计
设计目录
中英文摘要
障板参数统计主要程序
