Seismic Design of Reinforced Concrete Structures

Abstract

Abstract:This chapter covers various aspects of seismic design of reinforced concrete structures with an emphasis on design for regions of high seismicity. Because the requirement for greater ductility in earthquake-resistant buildings represents the principal departure from the conventional design for gravity and wind loading, the major part of the discussion in this chapter will be devoted to considerations associated with providing ductility in members and structures. The discussion in this chapter will be confined to monolithically cast reinforced-concrete buildings. The concepts of seismic demand and capacity are introduced and elaborated on. Specific provisions for design of seismic resistant reinforced concrete members and systems are presented in detail. Appropriate seismic detailing considerations are discussed. Finally, a numerical example is presented where these principles are applied. Provisions of ACI-318/95 and IBC-2000 codes are identified and commented on throughout the chapter.F. Naeim (ed.), The Seismic Design Handbook

Seismic Performance Evaluation of RC Beam-Column Connections in Special and Intermediate Moment Frames

“…It has been suggested that, if RC moment frames cannot satisfy the same criteria as those specified for steel moment frames belonging to the same category (special/ intermediate/ ordinary), suitable adjustments should be made. That is, reducing the values of the R-factor assigned to RC moment frames, allowing a reduction in the required ductility; otherwise, detailing requirements for them should be appropriately enhanced [Derecho and Kianoush, 2001].…”

“…A substantial loss in the strength and/or stiffness of beam-column connections due to joint shear distress and/or excessive bond slip may lead to undesirable responses of the frame, such as significant lateral displacements and consequent frame instability and failure due to P-delta effects. Thus, proper detailing should be provided for beamcolumn joints so that beams and columns framing into the joint can develop and maintain their strength and deformation capacity under design-level seismic forces [Derecho and Kianoush, 2001]. …”

Base Isolation Compared To Capacity Design For Large Corner Periods And Pulse-Type Seismic Records

“…Immediate occupancy requirements can be achieved by aiming an elastic seismic response. Two possible structural solutions are investigated: 1) a stiffening design approachexpecting high response acceleration and damage (Moehle, 2014;Derecho et al, 2001;Fajfar, 2018;Postelnicu et al 2012) and 2) base isolation (Mazza et al, 2018;Reddy et al, 2019;Sorace et al, 2014).…”