| 3-D Simulation Study on Seismic Response of Bridge Piles in Landslide |
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| 作者姓名： | Hou Chaoping Liu Qi |
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| 作者单位： | College of Architecture and Urban-Rural Planning, Sichuan Agricultural University, Chengdu 611830, China,School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China;Key Laboratory of High Speed Railway Engineering, Ministry of Education, PRC, Chengdu 610031, China |
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| 基金项目： | This research supported by the Railway''s Research and Development Project of the Ministry of Railways of the People''s Republic of China (Grant No. Z2012-061). |
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| 摘 要： | The anti-slide support structure is widely used in the anti-seismic reinforcement of bridge foundations, but related experimental research was processing slowly. Based on the prototype of the Jiuzhaigou bridge at the Chengdu-Lanzhou Railway, a 3-D simulation model was established on the basis of the shaking table model test, and the rationality of the dynamic analysis model was verified by indicators such as the bending moment of the bridge piles, peak soil pressure, and PGA amplification factors. The results show that the inertia force of the bridge pier has an important influence on the deformation of the pile foundation. The bending moment and shearing force are larger in lateral bridge piles, and the maximum value is near the pile top. The PGA amplification factor is stronger in the back of the rear anti-slide piles and so is it in front of the bridge pier, and the soil is prone to slip and damage. The bedrock is rigid and the dynamic response is maintained at a low level. The anti-slide piles in the rear row play a major role in the anti-seismic reinforcement design, and the anti-slide piles in the front row can be used as an auxiliary support structure.
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| 关 键 词： | Anti-slide pile Pier Foundation Shaking table test 3-D simulation Earthquake response |
| 收稿时间： | 2018/3/19 0:00:00 |
| 修稿时间： | 2018/5/22 0:00:00 |
3-D Simulation Study on Seismic Response of Bridge Piles in Landslide |
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| Hou Chaoping,Liu Qi.3-D Simulation Study on Seismic Response of Bridge Piles in Landslide[J].Earthquake Research in China,2018,32(3):425-434. |
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| Authors: | Hou Chaoping and Liu Qi |
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| Institution: | College of Architecture and Urban-Rural Planning, Sichuan Agricultural University, Chengdu 611830, China and School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China;Key Laboratory of High Speed Railway Engineering, Ministry of Education, PRC, Chengdu 610031, China |
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| Abstract: | The anti-slide support structure is widely used in the anti-seismic reinforcement of bridge foundations, but related experimental research was processing slowly. Based on the prototype of the Jiuzhaigou bridge at the Chengdu-Lanzhou Railway, a 3-D simulation model was established on the basis of the shaking table model test, and the rationality of the dynamic analysis model was verified by indicators such as the bending moment of the bridge piles, peak soil pressure, and PGA amplification factors. The results show that the inertia force of the bridge pier has an important influence on the deformation of the pile foundation. The bending moment and shearing force are larger in lateral bridge piles, and the maximum value is near the pile top. The PGA amplification factor is stronger in the back of the rear anti-slide piles and so is it in front of the bridge pier, and the soil is prone to slip and damage. The bedrock is rigid and the dynamic response is maintained at a low level. The anti-slide piles in the rear row play a major role in the anti-seismic reinforcement design, and the anti-slide piles in the front row can be used as an auxiliary support structure. |
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| Keywords: | Anti-slide pile Pier Foundation Shaking table test 3-D simulation Earthquake response |
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