公路声屏障计算机辅助设计系统初步研究与实现

基于CAD二次开发技术的基本原理，步骤和方法，研究了声屏障计算机辅助设计系统的框架和结构，利用Visual Ba-sic的ActiveX Automaiton技术，初步开发了基于AutoCAD的公路声屏障计算机辅助设计软件，该软件在输入必要的环境条件和公路噪声的参数后，可自由进行公路交通噪声预测，评价和声屏的设计，并以表格的形式输出交通噪声预测值，以AutoCAD图形格式输出声屏障设计平面图，断面图，立面图等以及有无声屏障时交通噪声的空间等声级曲线图。

Study on Traffic Sound Barrier Computer Aided Design System

On the basis of fundamental,steps and methods of second development of computer aided design,the component of traffic sound barrier CAD system is studied and a CAD software based on AutoCAD system is developed with the ActiveX Automation technology of Visual Basic.This software can finish the prediction and assessment of traffic sound and design of sound barrier,outputting the prediction result of traffic noise with table,all sound barrier design drawing with the format of AutoCAD drawing and sound pressuere level contour both being a sound barrier and not being a sound barrier,after inputting necessary environment condition and traffic sound parameter.