超宽断面隧道声场分布规律

——以白佛隧道为例

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中图分类号：U453.8 文献标志码：A 文章编号：1672-9315（2025）04-0756-15

DOI：10. 13800/j. cnki. xakjdxxb.2025.0412

Distribution law of sound field in ultra-wide section tunnel： Taking Baifo Tunnel as an example

LIU Hui 1，2 ， LI Borong'，LIU Mengjie²，DAI Xinyue²，LI Biao，HE Jiazhou1

（1. CCCC First Highway Survey and Design Institute Co.， Ltd.， Xi’ an 71Oo65， China; 2.College ofArchitecture and Civil Engineering，Xi’an Universityof Science and Technology，Xi’an710o54，China; 3.Shijiazhuang Traffic Investment Development Co.， Ltd.， Shijiazhuang O5oooo， China）

Abstract： Tunnel noise has an important influence on tunnel traffic environment and traffic safety.It is of great practical engineering significance to explore the distribution law of sound field in ultra-wide section tunnel for solving the problem of tunnel noise pollution.Based on the Baifo tunnel project，the acoustic wave equation of the tunnel cross section was derived by means of the flow-induced sound source theory，and the three-dimensional model of the ultra-wide section tunnelis established.The distribution law of aerodynamic noise in the ultra-wide section tunnel under diffrent traffc flows and different vehicle speeds was calculated and analyzed by the finite element method，and compared with the field monitoring data. The results show that： The sound field control equation based on the k-ε equation and the N-S equation can use the sound pressure and sound velocity as the characterization parameters of the aerodynamic noise source ; Aerodynamic noise is controled by airflow，and the airflow environment caused by traffic flow is more complex than that of vehicle speed; There is a sudden increase in the noise at the entrance and exit section of the tunnel.The internal noise of the tunnel is significantly affcted by the traffic flow factors.The more complex the driving environment，the greater the internal noise value of the tunnel. The relevant research results provide a scientific basis for the safe operation of the tunnel.

Key words： tunnel; ultra-wide section;flow-induced noise; pneumatic sound source; numerical simulation

0 引言

隧道是城市公共交通的重要组成部分，其内部属于半封闭环境，声波反射远远高于隧道外部，因此隧道内噪声影响不容忽视。（剩余16806字）