defining moving load in midas civil 2011

Due to early development of force plates and high accuracy of their measured data, many researchers have applied and improved them and its technology has been matured. ( Harper et al., 1961) developed a force plate to measure the time-history curves of vertical, lateral, and longitudinal components of the footstep load of an individual pedestrian, which was the first experimental measurement of pedestrian load. To measure pedestrian force, the time-history curve of footstep load was directly observed using force measuring plate, walking machine, and other instruments to analyze its characteristics and develop a mathematical model. Using the walking load model developed in this work, the reliable structure response of human-induced vibration analysis can be obtained. Time histories of pedestrian walking loads showed regular periodic changes and dynamic load factor increased by increasing stride frequency. Furthermore, the equation of dynamic load factor was derived by analyzing time-histories and power spectra and the design models of pedestrian walking load and crowd load were developed based on a great number of experimental data.

The acceleration time-histories of walking pedestrians were accurately recorded using three-axis wireless acceleration sensor Xnode. In experimental studies, single-person and multi-person walking tests were performed at Yanluo Footbridge to measure corresponding stride frequency and dynamic load factor. An experimental investigation was performed on walking loads according to bipedal walking force model. In the current work, Yanluo Footbridge with 102 m span was adopted as test site and Xnode high-precision acceleration wireless sensor was applied for measurements. However, accurate pedestrian walking load data obtained from long-span footbridges is scarce and data reliability depends on the sensor used for measurement.

5School of Transportation and Civil Engineering and Architecture, Foshan University, Foshan, ChinaĪccurate simulation of walking load is of great significance in conducting human-induced vibration analyses.

4Dongguan Hongchuan Intelligent Logistics Development Co.

2China Construction Steel Structure Guangdongcorp.ltd., Huizhou, China.

1China Construction Steel Engineering Co.

Deyuan Deng 1,2*, Zhijian Wang 3, Xiaoqing Zhang 4 and Hongxin Lin 5

Defining moving load in midas civil 2011