Abstract
AbstractMost old‐type reinforced concrete (RC) buildings reinforced with smooth bars are often subjected to dynamic loads and the structural joints are usually in a complex tensile‐compressive stress state. To evaluate the safety and durability of RC structures with the finite element method, the dynamic bond performance of smooth bars in concrete under transverse tensile‐compressive stresses needs to be well understood. Therefore, an experimental study including 248 pull‐out specimens is performed to characterize the dynamic bond properties of smooth bars in concrete under transverse tensile‐compressive stresses. Based on the experimental results and other data, the effects of various factors on the peak bond stress, the slip at the peak bond stress, and the shape of the softening branch are analyzed in detail. With two bond parameters and one shape parameter, a simple bond stress‐slip model is proposed. Through comparison with experimental results, the validity of the model is verified.
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