小比例柱面网壳振动台试验及动力响应概率模型

Here, a small-scale single-layer latticed cylindrical shell model was fabricated for shaking table tests in order to reduce the whole test cost. Based on these model tests, the dynamic response probability model of a single-layer latticed cylindrical shell considering the variability of ground motion was designed. Firstly, a small-scale single-layer latticed cylindrical shell model was fabricated referring to the existing fabricating method for a single-layer spherical reticulated shell model with adhesive joints and holes. Then, shaking table tests including dynamic characteristics tests under elastic state and dynamic collapse ones under elastic-plastic state were conducted for the latticed cylindrical shell model using TAFT wave, artificial seismic one and simple harmonic one, respectively. Secondly, based on the actual test data, the dynamic model for the cylindrical shell model was established using the finite element software ABAQUS to perform numerical simulation, and analyze the cylindrical shell model's dynamic characteristics and failure features. Finally, effects of ground motion variability on dynamic characteristics of the cylindrical shell model were studied based on 40 sets of actual test data, and the variability of ground motion and the cylindrical shell model's dynamic response probability model were preliminarily fitted. It was shown that the study results can provide a reference for qualitative study on shaking table tests of single-layer latticed cylindrical shells and revising aseismic codes of spatial reticulated shell structures.