【摘要】 参照风洞试验和现场实测的试验方法,结合车辆行驶能产生风的特点,提出了一种理想道路条件下利用汽车行驶风测试建筑风压系数的跑车试验方法。采用理论推导和现场试验的方法,构建了跑车试验的基本理论,设计和组装了跑车试验的物理试验平台,搭建了软件测试系统,研究了测试数据的处理方法,运用该方法对CAARC标准模型典型测点的平均风压系数进行测试。研究了不同车速对平均风压系数的影响,并分析了同一车速多次重复测试平均风压系数结果的差异。研究结果表明:提出的跑车试验理论公式正确,构建的软硬件系统合理,标准模型测点的平均风压系数跑车试验测试结果与相关文献的风洞试验结果吻合很好,同一车速下多次重复测试结果偏差很小,不同车速影响平均风压系数程度小,验证了该方法在理想道路条件下的可行性。更多还原

【Abstract】 Referring to test methods of wind tunnel test and field measurement, using wind generated by a moving vehicle, a vehicle-running test method to measure wind pressure coefficients of buildings under ideal road conditions was proposed. Based on theoretical derivation and tests on site, the basic theory of the proposed method was built, the physical test platform for vehicle-running tests was designed and assembled, and the software measurement system was also constructed. The test data processing method was studied and used to measure mean wind pressure coefficients of CAARC standard model’s typical measured points. Effects of different vehicle speeds and repeated tests at the same vehicle speed on mean wind pressure coefficient were analyzed. Results showed that the basic theory of the proposed method is correct; the built hardware and software systems are reasonable; mean wind pressure coefficients of the standard model’s measured points agree well with those of the previous wind tunnel tests published in literature; deviations of repeated test results at the same vehicle speed are small; different vehicle speeds affect mean wind pressure coefficient a little bit; the feasibility of the proposed method under ideal road conditions is verified.更多还原