Behaviors of Precast Reinforced Concrete Drainage Pipes under Static Load Using Finite Element Model

This paper presents the behavior of the reinforced concrete drainage pipe (RCP) subjected to static loading conditions using a finite element model based on the standard No. TIS. 128-2549. For the first category, three types of circular prefabricated reinforced concrete pipes are investigated. These circular pipes include the single circular, the double circular, and the elliptical steel cages. The development of stresses in concrete and reinforcing bars obtained from the finite element model along the load-deflection curve of the circular pipes is sequentially presented. Similar to those found in literature, the redistribution process appears. Since the applied load is continuously increased in its magnitude, the excessive stress developed is transferred from the concrete to the reinforcing steel, whose strength capacity is better, especially for tension. For the second category, the circular pipes consisting of either circular or elliptical steel cages are compared with the elliptical pipes consisting of elliptical steel cages. For comparison, each pipe contains the same cross-sectional area. The loaddeflection curves obtained from the circular and elliptical RCP present a similar behavior, however, it is different in their magnitude. The elliptical pipe with a vertical position provides the significantly highest ultimate load capacity. It confirms that any cross-sectional area of these vertical elliptical RCP provides the longest moment arm of the resisting moment. Disciplinary: Civil Engineering & Technology. (C) 2022 INT TRANS J ENG MANAG SCI TECH.