Pci Journal 

About: Pci Journal is an academic journal published by Precast/Prestressed Concrete Institute. The journal publishes majorly in the area(s): Precast concrete & Prestressed concrete. It has an ISSN identifier of 0887-9672. Over the lifetime, 1455 publications have been published receiving 25093 citations. The journal is also known as: Prestressed Concrete Institute journal.

Preliminary results and conclusions from the PRESSS five-story precast concrete test Building

Abstract: A large-scale five-story precast concrete building constructed to 60 percent scale was tested under simulated seismic loading as the culmination of the 10-year PRESSS (Precast Seismic Structural Systems) research program. The building comprised four different ductile structural frame systems in one direction of response and a jointed structural wall system in the orthogonal direction. The test structure was subjected to seismic input levels equivalent to at least 50 percent higher than those required for UBC (Uniform Building Code) Seismic Zone 4. The behavior of the structure was extremely satisfactory, with only minimal damage in the shear wall direction, and no significant strength loss in the frame direction, despite being taken to drift levels up to 4.5 percent, more than 100 percent higher than the design drift level. The test validated the Displacement-Based Design (DBD) approach used to determine the required strength and confirmed the low damage and low residual drift expected of the building.

Shear transfer in reinforced concrete-recent research

Abstract: THE WAY IN WHICH CONCRETE STRENGTH, SHEAR PLANE CHARACTERISTICS, REINFORCEMENT, AND DIRECT STRESS AFFECT THE SHEAR TRANSFER STRENGTH OF REINFORCED CONCRETE IS DEMONSTRATED. FUNDAMENTAL BEHAVIOR OF TEST SPECIMENS UNDER LOAD IS REPORTED, AND HYPOTHESES TO EXPLAIN THE BEHAVIOR ARE DEVELOPED. IT IS CONCLUDED THAT SHEAR-FRICTION PROVISIONS OF ACI 318-71 GIVE A CONSERVATIVE ESTIMATE OF SHEAR-TRANSFER STRENGTH BELOW THE STATED LIMIT OF 800 PSI. A DESIGN EQUATION TO DEVELOP HIGHER SHEAR TRANSFER STRENGTH IS PRESENTED. /JPCI/

Overview of PRESSS Research Program

Abstract: M. J. Nigel Priestley, professor of structural engineering at the University of California in San Diego (UCSD), is the coordinator of the U.S-PRESSS Program. Prior to joining UCSD in 1986, Dr. Priestley was on the civil engineering faculty of the University of Canterbury in Christchurch , New Zealand. His areas of interest lie in the seismic design of concrete buildings and bridges and the evaluation of thermal stresses in concrete structures. He has authored numerous technical papers which have been published in various engineering publications , including the PCI JOURNAL. Dr. Priestley has been the recipient of many awards , including the ACI Raymond Reese Structural Research Award in 1984 and 1989.

Seismic response of precast prestressed concrete frames with partially debonded tendons

Abstract: The concept of connecting precast concrete frame elements with beam prestressing tendons debonded through the joint, and for some distance on either side of the coluumn, is discussed. It is shown that improved joint shear performance and restoring force characteristics can be expected from this arrangement. Results of dynamic inelastic analyses indicate that for structures with long natural periods, peak displacement response should be similar to that of conventionally prestressed concrete systems, and only slightly larger than systems with elasto-plastic hysteretic characteristics. A numerical design example is provided in an appendix to show how the force-deformation characteristics of precast concrete frame systems utilizing this concept may be calculated.