초록 ▼

A tank adapted to withstand the horizontal displacement forces and overturning moments which act upon the side walls thereof under earthquake conditions is disclosed. The tank includes a base and cylindrical side walls and a plurality of tendons are provided each of which is attached to the cylindri

A tank adapted to withstand the horizontal displacement forces and overturning moments which act upon the side walls thereof under earthquake conditions is disclosed. The tank includes a base and cylindrical side walls and a plurality of tendons are provided each of which is attached to the cylindrical side wall at one end and to an anchor fixedly positioned in the concrete base. Each of the tendons is stressed and the stress in the tendon acts downwardly and in some embodiments radially outwardly on the tank wall and substantially restrains the wall from horizontal displacement and protects the side walls from the stresses developed due to the overturning moment. Steel-wall and prestressed concrete wall tanks, particularly for cryogenic liquids, can be adapted according to the invention. A double-wall storage tank for cryogenic liquids is also shown wherein a plurality of stressed tendons are distributed around the inner wall and act outwardly and downwardly on the upper portion of the inner wall and wherein a second plurality of stressed tendons are attached to the upper part of the outer wall and act inwardly and downwardly thereupon.

대표청구항 ▼

A stationary tank of improved structural integrity for the storage of liquids or solids adapted to withstand forces acting upon the side walls thereof under earthquake conditions, including a concrete base; a vertically-positioned cylindrical side wall; and a plurality of tendons each tendon being s

A stationary tank of improved structural integrity for the storage of liquids or solids adapted to withstand forces acting upon the side walls thereof under earthquake conditions, including a concrete base; a vertically-positioned cylindrical side wall; and a plurality of tendons each tendon being stressed and each tendon being affixed at one end to said cylindrical side wall and at the other end to an anchor fixedly positioned in said concrete base at a position radially displaced from said side wall, so that said tendons each slope generally radially and downwardly from said side wall to said anchor and the stress in each said tendon has a radial as well as a vertical component to restrain said side walls from horizontal displacement and to mitigate the vertical stresses caused by earthquake conditions.