采用加速度传感器测定竖向步行力的试验研究

Tests for measuring vertical pedestrian loads using acceleration sensors

步行力的测定是人行作用下结构振动研究的基础,针对现存测定方法存在的问题,基于无线三轴加速度传感器,设计了一种通过测定人体质心加速度来间接测量步行力的方法。结合该方法对三个有代表性的测试者进行了不同速度下的步行力试验,并将试验结果与基于修正双足模型的模拟结果和已有的测力板试验数据进行了对比分析。结果表明,该方法测得的竖向步行力频谱特性与同等条件下生物力学模型的模拟结果基本一致,与以往测力板试验数据也有较好的一致性。

Measuring pedestrian loads is the basis of studying human induced structural vibration.Here,aiming at problems of current measuring methods,a new test method to indirectly measure pedestrian loads with measurement of human body mass center’s acceleration based on wireless 3-axis acceleration sensors was developed.Using the proposed method,tests for measuring pedestrian loads of 3 representatives walking at different speeds were conducted.The test results were compared with those of simulation with the modified biped walking model and previous test data with force plates.The results showed that the spectral characteristics of vertical pedestrian loads measured by the proposed method are basically consistent to the simulation results using the biomechanical model under same conditions,and they are also consistent to the previous test data with force plates.