IMPACT RESPONSE ANALYSIS OF CONVENTIONAL ROCKFALL PROTECTION FENCE UNDER FALLING-WEIGHT IMPACT LOADING

Abstract

In order to establish a numerical analysis method for appropriately evaluating impact resistant behavior of the conventional rockfall protection fence, a 3D elaso-plastic impact response analysis method with precisely modeling steel wire-net and wire-rope using beam and solid element, respectively, was proposed. The applicability was investigated comparing with the experimental results for full-scale model under falling-weight impact loading. The results obtained from this study were as follows: 1) time histories of dynamic responses obtained using the method were similar to those of the experimental results; and 2) dynamic behavior of the fence including trapping of falling rocks may be estimated by using the proposed method.