Abstract:

For some underground water tanks that adopt the overall anti floating design by covering the soil weight on the cantilever plate, the central partition wall is difficult to meet the local anti floating requirements from time to time. At this time, if the plane size of the water tank is narrow and long and the in-plane stiffness of the central longitudinal partition wall is weak, the adverse impact caused by the insufficient local anti floating will be amplified. This paper discusses such problems based on engineering examples, analyzes their adverse effects in detail, gives reference treatment methods, and demonstrates them through theoretical derivation.

Key words: local anti floating, underground water tank, in-plane stiffness