科研之友
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摘要
Similar materials of rock mass, which are suitable for pouring, are developed, then the similar test model of a large-scale anchored rock slope is built by pouring, and the shaking table model test is carried out. The strains on the two anchorage interfaces are measured, and then the test data obtained are analyzed for the first time. The results show that it is feasible to complete the shaking table model test through preparing similar materials and building the test model by pouring. Under the continuous action of earthquake, the seismic response of anchored rock slope is enhanced. The mortar in the weak layer deforms first under the action of the slope rock mass, and then deforms the anchor bolt. With the continuous input of seismic waves, the deformation and stress of the anchorage in the weak layer develop towards the anchorage section in the bedrock and unstable rock. The strain on the anchor bolt and mortar in the weak layer is the largest, and decreases rapidly to both sides. The strain response of anchor bolt is strengthened continuously under the action of earthquake, but the mortar cracks earlier because of its brittleness. At the same time, the interaction and transfer law of force in anchored slope and the anchoring effect under earthquake are analyzed. This research can provide important reference for the theoretical research, numerical simulation and seismic design and construction of ground anchorages.
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