Study on the Dynamic Response of Anchorage System under Earthquake

李楠; 汪班桥; 门玉明; 程辉

doi:10.13409/j.cnki.jdpme.2017.06.004

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Study on the Dynamic Response of Anchorage System under Earthquake

更新时间：2025-12-11

- Study on the Dynamic Response of Anchorage System under Earthquake
- Vol. 37, Issue 6, Pages: 878-885(2017)
- 作者机构：
- 作者简介：
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- DOI：10.13409/j.cnki.jdpme.2017.06.004
  CLC： U435
- Published：2017
- 稿件说明：
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[1]李楠,汪班桥,门玉明,程辉.地震作用下锚固滑坡动力响应研究[J].防灾减灾工程学报,2017,37(06):878-885.

李楠, 汪班桥, 门玉明, et al. Study on the Dynamic Response of Anchorage System under Earthquake[J]. 2017, 37(6): 878-885.
[1]李楠,汪班桥,门玉明,程辉.地震作用下锚固滑坡动力响应研究[J].防灾减灾工程学报,2017,37(06):878-885. DOI： 10.13409/j.cnki.jdpme.2017.06.004.

李楠, 汪班桥, 门玉明, et al. Study on the Dynamic Response of Anchorage System under Earthquake[J]. 2017, 37(6): 878-885. DOI： 10.13409/j.cnki.jdpme.2017.06.004.

摘要

为研究地震作用下锚固滑坡的动力响应

开展大型振动台模型试验

以汶川波、El Centro波以及不同频率的正弦波为输入波

研究在逐级增大加载强度条件下锚固滑坡的动力特性、加速度响应及地震动参数对加速度响应的影响等动态响应特征。结果表明:①地震作用下

锚固滑坡的破坏形式主要为框架之外素土部分上部的张拉破坏和坡底的剪切破坏。②锚固滑坡对输入地震波具有放大作用

且沿坡高方向向上

PGA放大系数呈递增趋势。③不同类型的地震波作用时

由于其频谱特性的差异

锚固滑坡的加速度响应不同。低强度地震波作用时

输入波的频率越接近锚固体的自振频率

坡面加速度放大效应越强;高强度地震波作用时

输入波的频率越低

坡面加速度放大效应越强;低频波作用时

加载强度越大

坡面加速度放大效应越强;高频波作用时

加载强度越大

坡面加速度放大效应越弱。研究结果对锚固滑坡的抗震设计具有一定的参考意义。

Abstract

In order to study dynamic response of anchorage landslide under earthquake

large-scale shaking table model test is conducted. In this paper

sine wave

Wenchuan wave and El Centro wave as input seismic wave

dynamic properties of anchorage landslide

acceleration response and the effect of earthquake parameters on anchorage landslide are studied respectively. The results indicate that: ①The main failure form of anchorage landslide under earthquake is tension destruction in the upper and shearing destruction in the bottom outside frame beam.② The anchorage landslide has amplification effect on the input seismic wave

and PGA amplification coefficient increases from bottom to top along with the landslide. ③Due to the earthquake spectrum characteristics

acceleration response is different under different seismic waves; Under low strength earthquake

the closer to the natural frequency of anchorage landslide

the stronger the amplification effect will be

however

under high strength earthquake

the lower the frequency of the input wave

the stronger the amplification effect will be; Under low frequency wave

the stronger the loading earthquake

the stronger the amplification effect

while under high frequency wave

the stronger the loading earthquake

the weaker the amplification effect will be. The results could provide a reasonable foundation for the design of anchorage landslide.

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references

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