Author:
Qing Zhao
Affiliation:
China Airport Construction Group Corporation, China
Keyword(s):
Large Civil Airports, Rainwater Systems, Flood Control and Drainage, Rainfall Recurrence Period, Safety Margin
Abstract:
Rainfall statistics obtained by using a self-recording rain gauge describe the natural law of atmospheric rainfall occurring, while the uncertainty of atmospheric rainfall makes human beings unable to calculate or forecast any climate event that is going to happen or the degree of its impact any more accurately. Although the calculation formula of urban rainstorm intensity deduced from the statistical perspective is included into relevant design specifications, and the proposed rainfall recurrence period standard is followed to instruct the rainwater system engineering design, the rainfall recurrence period standard has been determined after multidimensional consideration to such factors as technology, economy, management and coordination of the designated age, and also reflects the technical strength of that age, which is also the minimum “threshold” of design. This paper, combined with construction features and development issues of large civil airports, in view of rainwater system
engineering schemes involved in flood control and drainage of airports, and by form of case study, puts forward the necessity to improve the safety margin of rainwater system design, and conducts multidimensional research on how to improve the safety margin of design schemes, enabling the equipment and facilities of rainwater systems to cope with sudden disastrous weather events, and to a certain extent, adapt to the upgrade of technical standards in the future.
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