Soil Engineering and Foundation

›› 2017, Vol. 31 ›› Issue (1): 42-44.

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Study on Natural Ventilation Effects on the Z-Shaped Urban Pedestrian Underpass

GUAN Xiangyang1,2, WANG Yong  2, LI Xiongwei3, LI Mingzhong4   

  1. (1.School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001;
    2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071;3.Changzhou Key Laboratory for Structure Engineering and Material Properties, Changzhou Institute of Technology, Changzhou 213002;
    4.China First Metallurgical Group Co., Ltd., Wuhan 430081)
  • Received:2016-10-07 Revised:2016-10-18 Online:2017-02-20 Published:2017-02-24

Abstract: The urban underground facilities in the humid and rainy climatic conditions in southern China often results in the serious condensation hazards. In order to reduce the maintenance costs after the completion of these underground structures, the natural ventilation should be encouraged in the urban pedestrian underpass as much as possible. The layout of the underpass has a strong influence on its ventilation effect and the minimization of the condensation hazards. This paper presents the underpass project of Cuiliu Street in Wuhan. The insitu ventilation tests were conducted and the numerical analyses were performed to verify the effect of the natural ventilation. The results indicate that the numerical analysis results are close to the measured results from the insitu tests. The insitu tests and the numerical analysis results verified that the natural ventilation is a better way of minimize the condensation hazard.

Key words: Pedestrian underpass, CFD Simulation, Natural Ventilation, Moisture Condensation