ABSTRACT
It is needed to evaluate the exact dynamic response of RC column to prevent the seismic failure by huge earthquake. By the limitation from the capacity of test facility and cost for specimen production, the seismic test using real-scale structures is typically not possible. Therefore, the test using scaled model is an economic alternative. In this study, the development of reasonable similitude law to evaluate an RC column’s dynamic response is discussed. To design the small-scale model of RC structures, it is necessary to use micro-concrete whose aggregate size is smaller than normal concrete. Therefore the material characteristic of concrete for both prototype and scaled model becomes much different. But the material characteristic of reinforcement for both prototype and scaled model is typically not much different. From this discrepancy, a strain distortion is occurred.
In this study a new similitude law to minimize the error from the strain distortion is suggested. In addition, a new method for computing the strain ratio is suggested. Numerical verification for the dynamic analysis of RC column with rectangular section was conducted. Analysis results indicated that response of the scaled RC model using the suggested similitude law can predict the response of prototype structures exactly. Stress-strain relationship of concrete and steel for prototype (p) and model (m). https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315207681/cd556cd4-4dcf-4efe-8e29-56fc67b8bfbd/content/fig293_1.tif"/> Comparison of time history response of prototype and predicted, non-yielding case. https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315207681/cd556cd4-4dcf-4efe-8e29-56fc67b8bfbd/content/fig293_2.tif"/> Comparison of time history response of prototype and predicted, non-yielding case. https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315207681/cd556cd4-4dcf-4efe-8e29-56fc67b8bfbd/content/fig293_3.tif"/>
