单通道测压管路系统的优化设计

Optimization of Dynamic Pressure Measurement of Single-channel Tubing Systems

建筑物的脉动风压的信息对于结构风振响应的计算有重要意义 .为了避免测压管路系统测量的脉动风压力发生畸变 ,需采用一些气动措施 ,如加限制器的方法是方便而有效的 .为此提出了对串联限制器的测压管路进行优化设计的一种方法 ,并对优化后测压管路系统的频率响应函数进行了实验测试 ,理论计算的频率响应函数与实验测量值吻合得很好 .进一步对比了当输入信号为随机压力时 ,测压管路系统分别为优化后的测压管路系统、强阻尼及弱阻尼测压系统测量的压力信号 .

Measuring dynamic pressure is important in computing wind-induced dynamic responses of buildings.To avoid the distortion of measured dynamic pressure,the restrictor which has been proven to be effective is usually adopted for practical purpose.This paper proposes an optimal method for designing the tubing system with restrictors for measuring dynamic pressure.The tranfer functions of optimized tubing systems are then tested.The theoretical and experimental results agree well with each other.Random dynamic pressures from the optimized tubing system,an overdamped tubing system and an underdamped tubing system are also compared.The results indicate that the optimized tubing systems may provide satisfactory dynamic pressures.