CAJ | 학술논문

通过调研分析现有城市高架轨道交通声屏障的不足，针对高架轨道交通噪声的特性，研制了一种城市高架轨道交通新型声屏障。该新型声屏障综合运用了尖劈、微穿孔等多种吸声机理，大幅提高了声屏障的吸声性能，并通过优化屏障结构提高屏体隔声性能，有效降低屏体二次结构声，提高屏障的降噪效果。实验室和现场试验均显示，该新型声屏障具有良好的降噪效果，适用于高架轨道交通。
통과조연분석현유성시고가궤도교통성병장적불족，침대고가궤도교통조성적특성，연제료일충성시고가궤도교통신형성병장。해신형성병장종합운용료첨벽、미천공등다충흡성궤리，대폭제고료성병장적흡성성능，병통과우화병장결구제고병체격성성능，유효강저병체이차결구성，제고병장적강조효과。실험실화현장시험균현시，해신형성병장구유량호적강조효과，괄용우고가궤도교통。
Disadvantages of existing sound barriers on elevated railways are investigated and analyzed, and the new harrier, matching the characteristics of elevated railway noise is developed. Wedges and microperforated structures are used in the barri-er to improve the sound absorption property. The structure of the barrier is carefully designed to improve the sound insulation property and reduce the structure-borne noise. Laboratory and field tests prove that the new sound harrier has satisfactory effect of reducing noise and works effectively on elevated railwas.