基于单人步行载荷参数的随机人群载荷模型

采用人行通道步行载荷测试系统，测试分析得到了单人步行载荷参数.在此基础上，综合考虑了人群分布、行人步频、步长、初始相位等随机因素，建立了一种随机人群步行载荷模型.以某人行桥为例，应用ANSYS有限元软件，对该桥在随机人群载荷作用下的动力学响应进行了分析.通过与实验测试的对比分析，表明采用该模型计算的人行桥响应与实验结果吻合性较好，从而验证了该模型的合理性与有效性.

A Stochastic Crowd Load Model Based on Single-Pedestrian Loading Parameters of Walking

Crowd walking load model is significant for human-induced vibration analysis of footbridges. The single-pedestrian walking load parameters were measured and analyzed using walkway walking load test system. A stochastic crowd walking load model was proposed, taking into account of the random nature of crowd distribution, pedestrian step frequency, step length, initial phase, etc. Taking a certain foot bridge as an example, dynamic responses of this bridge imposed on stochastic crowd walking loads were analyzed by ANSYS. Compared with the in-situ experimental tests, it is indicated that the numerical results using this model coincide well with the experimental results, proving the rationality and validity of this model.