不同地质网强化地基支墙的地震响应比较:基于振动表和3D FE分析
Muhammad Akbar1,2, Pan Huali3, Jiangcheng Huang4
1Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610299, China.
Scientific reports
|October 15, 2024
概括
空洞预制混凝土板和地铁网强化显著降低地面压力和地面支墙壁的墙壁位移. 这些发现为地质工程中的地震稳定提供了实际解决方案.
科学领域:
- 地质技术工程 地质技术工程
- 地震工程的工程是地震工程.
- 结构工程 结构工程
背景情况:
- 地板支墙对于管理土壤压力至关重要,尤其是在地震地区.
- 与颗粒式补充物集成的地质网强化为提高墙壁性能提供了一种有前途的方法.
- 传统的墙壁设计面临着地震性能方面的挑战,需要创新的解决方案.
研究的目的:
- 为了研究各种地质网增强的地面支墙在地震负荷下的性能.
- 为了比较空心预制混凝土板,石头造和钢筋混凝土 (GRE) 墙壁的有效性.
- 开发和验证一个有限元模型,用于预测地震引起的墙壁移位.
主要方法:
- 在不同的墙壁类型和配置上进行了小规模的摇桌测试.
- 进行了全面的3D有限元分析,以模拟墙壁-补充互动.
- 关键性能指标的比较分析,包括墙壁移位,偏移,侧面压力和沉积.
主要成果:
- 空心预制混凝土板表现出优越的性能,具有较低的屈曲和位移.
- 在空洞的预制墙壁中使用地铁网强化导致回填沉积和侧面压力减少.
- 开发的有限元模型准确地预测了墙壁的行为,并通过实验数据验证了这一点.
结论:
- 空洞预制混凝土板是地铁网增强的地面支墙最实用和可行的选择.
- 地铁网强化是有效的缓解地震对地球支结构的影响.
- 该研究提供了一种经过验证的模型,用于估计GRE墙壁中地震引起的位移.
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