Layout optimization of stay cable anchorage air-drying dehumidification scheme
The stay cables are important load-bearing component of a cable-stayed bridge.The cou-pling effect of fatigue and corrosion generated during bridge operation can significantly shorten the ser-vice life of the stay cable.Although multiple waterproofing measures are applied on stay cable and an-chorage to extend the service life of them,it is hard to completely prevent corrosion issue caused by the accumulation of condensed water in lower anchorage area during the construction or operation pe-riod.Therefore,the technical concept of air-drying dehumidification for the stay cable anchorage area is proposed.This research conducts computational fluid dynamics analysis on the airflow field inside the anchorage of stay cable to analyze the influence of inlet&outlet layout plan and air supply pressure on the effective flow rate in different areas inside the anchorage.An optimized"side-inlet¢ral out-let scheme"is proposed.
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