Abstract
After the wenchuan earthquake, the dynamic response law of rock slope under the action of dynamic load is a very concerned and urgent problem in the field of seismic engineering. This paper analyzed the dynamic response law of simplified rock slope under the cosine wave dynamic load by numerical simulation with FLAC3D software. This research emphatically analyzed the variation law of amplification coefficient of seismic displacement, acceleration and velocity of rock slope under the condition of different slope height, slope angle, dynamic load period and dynamic load amplitude, which provides a basis for reducing seismic damage of slope area and seismic design of engineering structure.
Highlights
China has a vast land area, and the mountainous areas account for about two-thirds of the total area of China, which objectively determines that there are a large number of slopes distributed in China
With the continuous development of China's economic construction, a large number of new artificial slopes appeared during the construction of "Western Development", "South-to-North Water Transfer Project", "Three Gorges Project" and "Four Vertical and Five Horizontal" Transportation Hubs
These slopes have different amplification effects on ground motion, which will directly threaten the safety of the projects themselves, and cause harm to people's lives and properties in big cities and large enterprises
Summary
China has a vast land area, and the mountainous areas account for about two-thirds of the total area of China, which objectively determines that there are a large number of slopes distributed in China. With the continuous development of China's economic construction, a large number of new artificial slopes appeared during the construction of "Western Development", "South-to-North Water Transfer Project", "Three Gorges Project" and "Four Vertical and Five Horizontal" Transportation Hubs. These slopes have different amplification effects on ground motion, which will directly threaten the safety of the projects themselves, and cause harm to people's lives and properties in big cities and large enterprises. In 1987, Wang Cunyu [5] conducted a dynamic model test on Ertan Arch Dam to study the amplification effect of rock slope on earthquake. Li Yushu [8] used the dynamic finite element method to study the full-time dynamic response law of the lateral slope at the unsymmetrically pressed tunnel entrance under horizontal earthquake, vertical earthquake and both horizontal and vertical earthquakes
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