Cracking of reinforced concrete structural walls subjected to cyclic loading

Reinforced Concrete Walls;Structural Walls;Cracking;Tension Stiffening;Tensile Response;Planar Walls;Coupled Walls

Hart, Christopher

关键词: Reinforced Concrete Walls;    Structural Walls;    Cracking;    Tension Stiffening;    Tensile Response;    Planar Walls;    Coupled Walls;   

Others  :  https://www.ideals.illinois.edu/bitstream/handle/2142/30902/Hart_Christopher.pdf?sequence=1&isAllowed=y

美国|英语

来源: The Illinois Digital Environment for Access to Learning and Scholarship

【 摘 要 】

A barrier to the development, calibration, and validation of improved and quantifiably accurate computational tools for predicting the behavior of concrete structures is the lack of comprehensive and dense test data from more realistic experiments. The expression “comprehensive and dense” is being used to describe the collection of full-field strains, deformations, and other test data. The term “more fully realistic” refers to test structures being of sufficient size to avoid a significant size effect and being subjected to loading regimes that are representative of what would be expected in real structures. The advanced research capabilities in the Network for Earthquake Engineering Simulation (NEES) facility at the University of Illinois at Urbana-Champaign make it possible to subject large-scale structural concrete components to complex loading histories and to make comprehensive and dense measurement of their response. The subject of this thesis is the examination of the cracking behavior and seismic response of reinforced concrete structural walls. This examination is being made using the results of a series of experiments conducted at the University of Illinois at Urbana-Champaign as part of the Network for Earthquake Engineering Simulation Research Small Group (NEESR-SG) project on the “Seismic Behavior, Analysis and Design of Complex Wall Systems”. A total of eight structural concrete walls, including planar, coupled, and C-shape walls, were subjected to reverse cyclic loading in this project. This thesis is concerned with the tensile response of all portions of the structure considering the effect of load reversals for the first five of these eight tests. More specifically, the test results are being used to assess the influence of structural reinforcement detailing and loading on the development of crack models (average crack spacing and average crack width), and tension stiffening effects.This investigation assesses the appropriateness and limitations of existing models to predict cracking and tension stiffening as needed to develop new models that can be developed using the fairly comprehensive dense data that is being collected from the aforementioned experiments.