Since the Wenchuan earthquake, statistics has shown that the damage on mountain tunnel entrance by earthquake is getting more serious. To improve the seismic performance of mountain tunnel entrance and design more reliable slope reinforcement structures, a series of shaking table test is designed and conducted. Research shows that: (1). High steep homogeneous rock slopes without any reinforcements would collapse during high intensity earthquake, leading to massive slump and endanger the safety of both tunnel entrance structures and operation reliability. (2). Frame beamed slope reinforcement structures would improve the anti-seismic ability of slopes by keeping the overall integrity. Only debris within the framework would slide in high intensity earthquake. (3). The lining section internal force and momentum decreased by the frame beamed reinforcements at the portal area, compared to the original tunnel entrance. From the analysis, the frame beamed reinforcement structure of high steep slope enhanced the slope integrity by limiting the movement freedom of rock slopes, it also effectively prevents the slope failure and reduces the internal force of tunnel linings.
隋传毅1，高 波1，申玉生1，王建西2，王帅帅1. 隧道高陡仰坡抗震性能振动台试验分析[J]. 振动与冲击, 2017, 36(19): 186-194.
Sui Chuan-yi1, GAO Bo1, SHEN Yu-sheng1, WANG Jian-xi2, WU Dong1 . Shaking table tests and analysis for tunnel structures with high steep slope. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(19): 186-194.
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