Abstract:

The design of entrance/exit of connection gallery of underground garage should meet the operation security requirements. There is not any standard for geometric design and position and spacing selection of connection gallery of underground garage. Thus, thestateoftheart of the connection galleries of underground garages completed and under construction are researched; the differences of key design indicators of underground road between related municipal specification and building specification are compared by taking the underground roads of Zhengdong CBD subcenter and Chengdu financial business district for examples; the calculation methods for variable speed lane length and transition section length of connection gallery of underground garage are introduced; and the evaluation standard system and calculation model for running speed coordination of connection gallery of underground garage are established. Finally, some conclusions, i.e. specification selection basis for geometric design, value selection of transition section lane length and position determination of entrance/exit of connection gallery of underground garage, are obtained, and the distance of adjacent entrance/exit of singletrack and single-hole connection gallery of underground garage is suggested to be set according to the 1-3 minutes running length, so as to meet the requirement of disaster prevention and evacuation.

Key words: connection gallery of underground garage, entrance/exit design, variable speed lane, running speed coordination, disaster prevention and evacuation