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Behavior of Shear Anchorage in Concrete Statistical Analysis and Design Recommendations

Muratli, Hakki

1998

The overall objective of this thesis is to examine the shear behavior of anchors in uncracked and cracked concrete under static and dynamic loading, and based on that examination to propose procedures for designing and evaluating such anchors.

The first task is to summarize the basic principles and the design guidelines in documents like ACI 318 (Building Code Requirements for Structural Concrete, anchorage proposal, Chapter 23), the draft ACI 349 (Code Requirements for Nuclear Safety Related Structures, Chapter 23), USI A-46 SQUG Report (Unresolved Safety Issues Seismic Qualification Utility Group Report), and the ACI 355 State of the Art Report. The next step is to establish a database of existing data on shear anchors using the same general principles previously used for a similar tensile database.

The second task is to compare the test data with predictive equations of different methods (such as the CC Method and 45-Degree Cone Method) for computing anchor capacity as limited by concrete breakout.

The third task is to evaluate the trends in test data. Initial evaluations are made using linear regression analysis. Final evaluations are made using Load and Resistance Factor Design (LRFD) principles.

The fourth and final task is to recommend design and evaluation procedures based on that evaluation.

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