Download or read book Moment rotation Response of Partially Prestressed Concrete Beam column Joints Under Cyclic Excitations written by Mazin Hamdi Umari and published by . This book was released on 1988 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study presents an analytical model for predicting moment-deformation relationships of partially prestressed concrete joints under generalized load excitations. The proposed joint model comprises three interrelated integral parts: 1) The material constitutive relations, 2) The slip model and 3) The non linear analysis. In the first part, the stress-strain relationships used in the non linear analysis to characterize the behavior of concrete and reinforcing steel under cyclic loading were introduced. A new model for predicting the stress-strain relationship of prestressing steel under cyclic loading was also introduced. The model showed very good agreement with experimentally observed results. In the second part, a slip model, based on a linear relationship between local bond stress and slip, was proposed. Using this model, it was possible to find steel stress, steel strain, bond stress and slip distributions along the bar anchorage length. In addition to its tremendous efficiency in computation, the proposed slip model proved to be accurate when compared with experimentally observed results and also retained most of the accuracy of finite element predictions. The above mentioned parts were combined and implemented in a computer program which, when given proper input, can produce moment-deformation relationship of partially prestressed joints. A parametric evaluation was undertaken on two interior and one exterior typical partially prestressed concrete joints. The proposed joint model provided satisfactory analytical results which are compatible with well established facts pertaining to hysteretic behavior of partially prestressed concrete joints Also, results of the proposed joint model proved to be in good agreement with available experimental results.

Download or read book Moment rotation Relationship of Reinforced Concrete Beam column Joints Under Generalized Excitations written by Bassam Khalid Abbas and published by . This book was released on 1988 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study concentrates on two interrelated aspects pertaining to the deformation of beam-column joints under severe cyclic excitations. In the first part of this study, a closed form solution is developed for computing the slip and its distribution along reinforcing steel bars anchored inside a beam-column interior or exterior joint and subjected to generalized boundary steel stress excitations. The main advantage of the developed slip model, under which tremendous computation effort can be saved, is that: 1) it bypasses the local bond stress-slip relationship of unconfined concrete in its descending portion since no reliable experimental data describes this portion, and 2) it ignores the definition of local bond stress-slip relationship under severe load reversals. With its simplicity, the model reproduced quite accurately experimentally observed results and was shown to be in very good agreement with the presumably more accurate finite element prediction models. In the second part of the study, a joint model for describing the moment-rotation relationship of both interior and exterior beam-column joints subjected to inelastic cyclic loading was developed. The model was derived based on idealized hysteretic material models for concrete and for the reinforcing steel bars. Interaction between steel and concrete through bond and slip of reinforcement inside the joint was taken into consideration using the slip model developed in the first part of this investigation. The joint model accounted for the two primary mechanisms responsible for the deformation of the beam relative to the column in the joint. These are: 1) inelastic rotation occurring within an equivalent plastic hinge length extending outside the beam column interface. and more importantly, 2) the fixed-end rotation arising from the slip of reinforcement at the beam-column interface cracks. The joint model allowed prediction of steel stresses and strains, slips, moments, curvatures, inelastic rotation and plastic rotation at any load level during the deformation or load history. Despite some discrepancy, the developed joint model reproduced within a reasonable degree of accuracy the experimentally observed results. On the other hand, with its simplicity in implementation and tremendous efficiency in computation, the developed joint model retained most of the accuracy of results obtained using finite element predictions.

Download or read book Research Report written by American University of Beirut and published by . This book was released on 1983 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cyclic Response of Reinforced Concrete Connections Using Cast in place Sifcon Matrix written by Hossam M. Abdou and published by . This book was released on 1989 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Shock and Vibration Digest written by and published by . This book was released on 1989 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CYCLIC RESPONSE OF REINFORCED CONCRETE CONNECTIONS USING CAST IN PLACE SIFCON MATRIX written by HOSSAM M. ABDEU, ANTOINE E. NAAMAN, JAMES K. WIGHT and published by . This book was released on 1989 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Behaviour of Prestressed Partially Prestressed and Reinforced Concrete Interior Beam column Assemblies Under Cyclic Loading written by Robert Park and published by . This book was released on 1973 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cyclic Response of RBS Moment Connections written by Chad Gilton and published by . This book was released on 2000 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Abstract Journal in Earthquake Engineering written by and published by . This book was released on 1991 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Cyclic Loading Rate on Response of Reinforced Concrete Model Beam Column Joints and Anchorage Bond written by Lan Chung and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transactions of the American Society of Civil Engineers written by American Society of Civil Engineers and published by . This book was released on 1987 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. 29-30 contain papers of the International Engineering Congress, Chicago, 1893; v. 54, pts. A-F, papers of the International Engineering Congress, St. Louis, 1904.

Download or read book Cyclic Load Test on Prestressed and Reinforced Concrete Beam column Joints written by Kevin Joseph Thompson and published by . This book was released on 1976 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of Reinforced Concrete Beam column Joints Under Reversed Cyclic Loading written by Aly Marei Said and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ACI Structural Journal written by and published by . This book was released on 2001 with total page 924 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1992 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applied Science Technology Index written by and published by . This book was released on 1996 with total page 1720 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recommended Seismic Design Criteria for New Steel Moment Frame Buildings FEMA 350 written by Federal Emergency Agency and published by FEMA. This book was released on 2013-03-16 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report, FEMA-350 - Recommended Seismic Design Criteria for New Steel Moment-Frame Buildings has been developed by the SAC Joint Venture under contract to the Federal Emergency Management Agency (FEMA) to provide organizations engaged in the development of consensus design standards and building code provisions with recommended criteria for the design and construction of new buildings incorporating moment-resisting steel frame construction to resist the effects of earthquakes. It is one of a series of companion publications addressing the issue of the seismic performance of steel moment-frame buildings. The set of companion publications includes: FEMA-350 - Recommended Seismic Design Criteria for New Steel Moment-Frame Buildings. This publication provides recommended criteria, supplemental to FEMA-302 - 1997 NEHRP Recommended Provisions for Seismic Regulations for New Buildings and Other Structures, for the design and construction of steel moment-frame buildings and provides alternative performance-based design criteria. FEMA-351 - Recommended Seismic Evaluation and Upgrade Criteria for Existing Welded Steel Moment-Frame Buildings. This publication provides recommended methods to evaluate the probable performance of existing steel moment-frame buildings in future earthquakes and to retrofit these buildings for improved performance. FEMA-352 - Recommended Postearthquake Evaluation and Repair Criteria for Welded Steel Moment-Frame Buildings. This publication provides recommendations for performing postearthquake inspections to detect damage in steel moment-frame buildings following an earthquake, evaluating the damaged buildings to determine their safety in the postearthquake environment, and repairing damaged buildings. FEMA-353 - Recommended Specifications and Quality Assurance Guidelines for Steel Moment-Frame Construction for Seismic Applications. This publication provides recommended specifications for the fabrication and erection of steel moment frames for seismic applications. The recommended design criteria contained in the other companion documents are based on the material and workmanship standards contained in this document, which also includes discussion of the basis for the quality control and quality assurance criteria contained in the recommended specifications. The information contained in these recommended design criteria, hereinafter referred to as Recommended Criteria, is presented in the form of specific design and performance evaluation procedures together with supporting commentary explaining part of the basis for these recommendations.