Download or read book Flexural Behavior of Post tensioned Masonry Walls Subjected to Out of plane Loads written by Roberto Rodriguez and published by . This book was released on 1994 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Behavior of Unbounded Post tensioned Masonry Walls written by Reza Hassanli and published by Springer. This book was released on 2018-08-07 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports on a comprehensive analytical, experimental and numerical study on the flexural response of post-tensioned masonry walls under in-plane loads. It explores an important mechanism in this new generation of structural walls, called “Self-centering”. This mechanism can reduce residual drifts and structural damage during earthquake ground motion, and is particularly favorable for structures which are designed for immediate occupancy performance levels. The book reports on the development and verification of a finite element model of post-tensioned masonry walls. It describes a detailed parametric study to predict the strength of post-tensioned masonry walls. New design methodologies and expressions are developed to predict the flexural strength and force-displacement response of post-tensioned masonry. Experimental study is carried out to better understand the behavior of post-tensioned masonry walls and also to evaluate the accuracy of the proposed design procedure and expressions. The book also includes an introduction to current research on unbounded post-tensioned masonry walls, together with an extensive analysis of previously published test results.

Download or read book Behavior of Reinforced Concrete Masonry Walls Subjected to Combined Axial Loading and Out of plane Bending written by Kun Hu and published by . This book was released on 2005 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Behavior of Post tensioned Hollow core Masonry Walls Subjected to Out of plane Loading written by Joseph M. Allen and published by . This book was released on 1988 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Behavior of Unbonded Post tensioned Masonry Walls written by Reza Hassanli and published by . This book was released on 2015 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masonry is one of the most widely used construction materials in the world. Incorporating post-tensioning into masonry offers a simple and cost-effective structural system. The post-tensioning techniques can be applied to different types of masonry members as either bonded or unbonded reinforcement. Recent research has demonstrated that unbonded post-tensioned structural elements including concrete walls, concrete columns, and masonry walls can display high ductility levels while withstanding high levels of seismic loads. When an unbonded post-tensioned masonry wall (PT-MW) is subjected to a lateral in-plane load, a single horizontal crack forms at the wall-foundation interface. The restoring nature of the post-tensioning (PT) force returns the wall to its original vertical position and minimizes the residual displacement. This behavior is specifically favorable for structures which are designed for immediate occupancy performance levels. The rocking mechanism of PT-MWs results in plastic deformation concentrated at the toe of the wall which can be repaired with minimal cost. While in members having bonded PT bars, the force developed in PT bars can be determined considering strain compatibility and equilibrium; for members having unbonded PT bars, theoretical evaluation of the stress developed in PT bars is challenging as it depends on the elongation of the unbonded PT bar. This study aims to get a better understanding of the in-plane behavior of PT-MWs.

Download or read book Mechanics and Behavior of Slender Post tensioned Masonry Walls to Transverse Loading written by Jennifer Renae Bean Popehn and published by . This book was released on 2007 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS)* at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dis semination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volumes were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 39 (thesis year 1994) a total of 13,953 thesis titles from 21 Canadian and 159 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this impor tant annual reference work. While Volume 39 reports theses submitted in 1994, on occasion, certain uni versities do report theses submitted in previous years but not reported at the time.

Download or read book Out of plane Behavior of Slender Post tensioned Masonry Walls Constructed Using Restrained Tendons written by Christopher Robert Drake and published by . This book was released on 2004 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance of Post Tensioned Clay Brick Masonry with Openings written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation aims to advance the understanding of unbonded post-tensioned masonry wall systems. Previous research has shown that unbonded post-tensioned masonry walls can adequately resist in-plane loading but their possible use in regions of high seismic activity has not been widely accepted. The research described in this dissertation focuses primarily on clay brick masonry. The first study is on the in-plane cyclic behavior of unbonded post-tensioned masonry walls with openings. Openings can interrupt the standard path of the compression strut. The compression strut is how unbonded post-tensioned masonry walls distribute the lateral load to the foundation, and without it the wall can become unstable. The results show that the size and location of the opening has a major effect of the overall response of the wall. As the opening size increases the compression strut becomes more unstable. Experimental studies involved the construction and testing of three walls. A parametric study was conducted to determine the effect of opening size and aspect ratio on the behavior of unbonded post-tensioned masonry walls with openings. Several tables are proposed for the initial design of these walls depending on the opening size and aspect ratio of the wall. The latter part of the dissertation focuses on the Direct Displacement-Based Design (DDBD) of unbonded post-tensioned clay brick masonry walls. A unique problem of the use of clay brick masonry walls arose and was studied. Because clay brick masonry and the concrete foundation's Young moduli are different, the interaction between the two surfaces was analyzed. It is shown that the foundation locally confines the clay brick masonry, thereby increasing its compressive strength. Without including this confinement, effect the lateral resisting strength is greatly underestimated. Previous methods are modified to predict the compressive strength of clay brick masonry at the wall/foundation interface. The method is verified a.

Download or read book Masonry Walls Strengthened with Fabric Reinforced Cementitious Matrix Composite Subjected to In Plane and Out of Plane Load written by Saman Babaeidarabad and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A natural evolution of ferrocement has been the replacement of the reinforcing steel with new composite materials. Not only has this addressed the issue of possible durability problems associated with steel corrosion, but has opened the possibility of using thin-section cementitious products as repair materials. Fabric-reinforced cementitious matrix (FRCM) is a class of composite systems that has recently emerged as an alternative to traditional retrofitting methods like fiber-reinforced polymers (FRP), steel plate bonding, section enlargement, and external post-tensioning for repairing and strengthening reinforced concrete (RC) and masonry structures. FRCM consists of a reinforcing phase (fabrics) embedded into a matrix (cementitious mortar) adhered to concrete or masonry structural members and acts as supplemental, externally-bonded reinforcement. The goal of this dissertation is to experimentally and analytically investigate the effectiveness of FRCM to retrofit existing masonry structures; to evaluate the flexural and shear capacity of FRCM walls; to develop structural design procedures; and, to compare FRCM and FRP externally strengthened masonry walls. The dissertation is articulated in three studies. The first study (Study 1) investigates masonry walls externally strengthened with FRCM subjected to diagonal compression; the second (Study 2) focuses on FRCM strengthened walls subjected to out-of-plane loading; and the third (Study 3) presents a comparison between experimental results in this research program and other research programs using FRP systems when the normalized shear or flexural capacity is related to a calibrated reinforcement ratio.

Download or read book The Masonry Society Journal written by and published by . This book was released on 2001 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Flexural Behavior of Reinforced Block Masonry Walls Under Out of plane Monotonic Loading written by Muris Wadie Farah and published by . This book was released on 1988 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Analysis Techniques for Structural Masonry written by Subhash C. Anand and published by . This book was released on 1985 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a session of Structures Congress '85, held in Chicago, Illinois, September 16-18, 1985. Sponsored by the Structural Engineering Division of ASCE. This collection contains seven paper on analysis of structural masonry. Various aspects of masonry analysis are covered. Topics include: linear and nonlinear finite element modeling, as well as progressive failure of masonry subjected to in-plane loads where failure may occur only in joints or may involve both bricks and joints; a macroscopic finite element model for masonry (without individual modeling of joints and bricks or blocks) which can handle in-plane and out-of-plane loading including both transverse shear effects and nonlinearity due to cracking; cavity masonry walls subjected to out-of-plane loads; a general failure criterion for the biaxial compressive strength of masonry as well as a design method based on the ultimate strength of masonry walls; reduction in the buckling lengths and corresponding increase in the load carrying capacity of masonry walls due to restraining effects of floor slabs; wall/floor-slab interaction in brick walls that yields load eccentricities and possible capacity reductions; and a 2D-finite element model that can account for shear transfer across wythes in a composite masonry wall.

Download or read book Post tensioned Single Wythe Concrete Masonry Walls written by William Peter Ostag and published by . This book was released on 1986 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Masonry Structures written by Robert G. Drysdale and published by . This book was released on 1999 with total page 928 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Post tensioned Concrete Masonry Walls Subjected to Uniform Lateral Loading written by Gabriel Gadison Aridru and published by . This book was released on 1992 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Strengthening of Reinforced Masonry Walls Subjected to Out of plane Pseudo static Cyclic Load Using Advanced Composite written by Zuhair Al-Jaberi and published by . This book was released on 2018 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A number of researchers have conducted experimental tests on unreinforced masonry walls (URM) strengthened with advanced composite materials. Consequently, the strengthening design guidelines are limited in their scope to URM. This research aimed to investigate the behavior of reinforced masonry walls strengthened with advanced composite and subjected to out-of-plane pseudo-static cyclic load. Experimental and analytical studies were conducted to evaluate the performance of different techniques such as near surface mounted (NSM) and externally bonded (EB) fiber reinforced polymer (FRP) with epoxy resin, in addition to NSM with cementitious adhesive and fiber reinforced cementitious material (FRCM). The experimental part included three phases. In the first phase, a series of 42 reinforced masonry walls were tested to study the effectiveness of advanced composites in enhancing out-of-plane flexural capacity. The effect of long-term environmental exposure on strengthening systems was investigated in the second phase of study by testing 10 reinforced masonry walls. The third phase focused on bond behavior between the advanced composite and the concrete masonry unit at different temperatures; 56 specimens were used for this purpose. The results indicated that the non-arching strengthened reinforced masonry wall's behavior was significantly dependent on the type of fiber and fiber reinforcement ratio. The specimens strengthened with glass under combined environmental cycles exhibited an insignificant change in terms of ultimate strength as compared to laboratory conditioned specimens. The theoretical part included the investigation of bond reduction factors, seismic performance, and the nonlinear analysis of strengthened reinforced masonry wall using moment-curvature analysis. As a result of this study, the proposed model for predicting debonding strain and the moment-curvature relation presented an excellent prediction compared to the experimental results"--Abstract, page iv.