摘要
为合理进行海堤工程震害预测,通过改变液化土层力学参数的方法考虑场地液化对海堤抗滑稳定性的影响,综合海堤本体结构抗滑安全系数和场地液化程度,提出新的海堤工程震害预测方法,并给出海堤破坏等级划分标准。以某海堤工程为算例,采用理正岩土分析软件建立海堤抗滑稳定性分析模型,进行不同地震烈度下海堤震害预测。研究结果表明,场地液化对海堤地震稳定性有较大影响,依托的海堤工程满足当地7度抗震设防要求,但8度时可发生中等破坏,存在较高的地震灾害风险,宜采取有针对性的加固措施。
In order to reasonably predict the seismic damage of seawall engineering,it considers the influence of site liquefaction on the anti-sliding stability of seawall by changing the mechanical parameters of liquefied soil layer.Based on the anti-sliding safety factor of seawall structure and the degree of site liquefaction,a new seismic damage prediction method of seawall engineering is proposed,and the classification standard of seawall damage grade is given.Taking a seawall project as an example,the anti-sliding stability analysis model of seawall was established by using Lizheng geotechnical analysis software,and the seismic damage prediction of seawall under different seismic intensities was carried out.The results show that the site liquefaction has a great influence on the seismic stability of the seawall.The seawall project meets the local seismic fortification requirements of 7 degree,but it enters medium damage at 8 degree,and there is a high risk of earthquake disasters.Targeted reinforcement measures should be taken.
作者
何润泽
郭恩栋
闫培雷
吴厚礼
金宇航
王晓娜
He Runze;Guo Endong;Yan Peilei;Wu Houli;Jin Yuhang;Wang Xiaona(China Earthquake Administration,Key Laboratory of Earthquake Engineering and Engineering Vibration,Harbin 150080,China)
出处
《震灾防御技术》
CSCD
北大核心
2023年第2期330-337,共8页
Technology for Earthquake Disaster Prevention
基金
中国地震局地震工程与工程振动重点实验室重点专项(2019EEEVL0103-01)
2019年胜利油田重点建(构)筑物震害预测及数据分析专项(19-FW2099-0111)。
关键词
海堤工程
场地液化
抗滑稳定性
震害预测
Seawall engineering
Site liquefaction
Anti-slip stability
Earthquake damage prediction
