Masters Theses in the Pure and Applied Sciences

Masters Theses in the Pure and Applied Sciences
Author: Wade H. Shafer
Publisher: Springer Science & Business Media
Total Pages: 386
Release: 2012-12-06
Genre: Science
ISBN: 1461573912

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 dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thougtit 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 con cerned if the printing and distribution of the volumes were handled by an interna tional 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 Cor poration 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 31 (thesis year 1986) a total of 11 ,480 theses titles trom 24 Canadian and 182 United States universities. We are sure that this broader base tor these titles reported will greatly enhance the value ot this important annual reterence work. While Volume 31 reports theses submitted in 1986, on occasion, certain univer sities do re port theses submitted in previousyears but not reported at the time.

Shear and Punching Shear in RC and FRC Elements

Shear and Punching Shear in RC and FRC Elements
Author: fib Fédération internationale du béton
Publisher: fib Fédération internationale du béton
Total Pages: 274
Release: 2010-12-01
Genre: Technology & Engineering
ISBN: 2883940975

fib Bulletin 57 is a collection of contributions from a workshop on "Recent developments on shear and punching shear in RC and FRC elements", held in Salò, Italy, in October 2010. Shear is one of a few areas of research into fundamentals of the behaviour of concrete structures where contention remains amongst researchers. There is a continuing debate between researchers from a structures perspective and those from a materials or fracture mechanics perspective about the mechanisms that enable the force flow through a concrete member and across cracks. In 2009, a Working Group was formed within fib Task Group 4.2 "Ultimate Limit State Models" to harmonise different ideas about design procedures for shear and punching. An important outcome of this work was the ensuing discussions between experts and practitioners regarding the shear and punching provisions of the draft fib Model Code, which led to the organization of the Salò workshop. Invited experts in the field of shear and FRC gave 18 lectures at the workshop that was attended by 72 participants from 12 countries in 3 different continents. The contributions from this conference as compiled in this bulletin are believed to represent the best of the current state of knowledge. They certainly are of general interest to fib members and especially helpful in the finalization of the 2010 fibModel Code. It is hoped that this publication will stimulate further research in the field, to refine and harmonize the available analytical models and tools for shear and punching design.

Post-punching Shear Response of Two-way Slabs

Post-punching Shear Response of Two-way Slabs
Author: Farshad Habibi
Publisher:
Total Pages:
Release: 2012
Genre:
ISBN:

"This thesis investigates the post-punching behaviour of reinforced concrete slab-column connections. Seven interior slab-column connections were tested to study the effects of slab thickness, the length of structural integrity reinforcing bars, the distribution of structural integrity reinforcement in slabs with rectangular columns and the placement of structural integrity reinforcement in slabs with drop panels. Results from this test series and from tests by other researchers were compared with predictions using the CSA A23.3-04 design equations for both punching shear and post-punching resistance. The test results demonstrated that the provision of structural integrity reinforcement in accordance with the requirements of CSA A23.3-04 resulted in significant post-punching resistance and the design equations provide a reasonable estimate of this resistance. In addition, an analytical model for predicting the post-punching shear response of slab-column connections is presented which accounts for the individual contributions of each layer of top reinforcement and each layer of the structural integrity reinforcement. The contribution of each layer of top and integrity reinforcement is governed by three different failure modes, including rupture of the bars, concrete breakout of the bars and pullout of the bars. The predictions are compared with experimental results and the results obtained by the CSA A23.3 Standard design method. There was a good agreement between the predicted results and the experimental results." --

Statistical Analysis and Modeling of Test Results for Punching Shear of Concrete Slabs Around Square Columns

Statistical Analysis and Modeling of Test Results for Punching Shear of Concrete Slabs Around Square Columns
Author: Mustafa Hussam Al Hakeem
Publisher:
Total Pages: 137
Release: 2016
Genre: Concrete
ISBN: 9781369234268

A statistical regression analysis was conducted on 146 selected test results from the literature to evaluate the basic ACI318 two-way shear strength equation, which has not changed since 1963. The basic ACI318 shear equation was established based on a statistical analysis of test results on scaled slab samples that were believed to have failed in shear. Only slabs with square columns, sheared on four sides and without shear reinforcement were needed in this study, resulting in 146 selected test results from 1956 to 2014. The study included slabs with normal and high strength concrete. This study presents new equations for slab punching shear capacity. The effect of several parameters on the punching shear strength is also discussed in this study. A simplified practical punching shear equation is also proposed based on statistical analysis of the experimental results from the database. The new proposed equations include the reinforcement ratio of the slab and the cubic root of the concrete strength. The study also showed that including the reinforcement ratio in the punching shear equation increases its accuracy. The new proposed equations are valid for normal and high strength concrete slabs.