[1]陈佳,丁永刚,许启铿,等.地震作用下柱承式筒仓动态侧压力计算方法研究[J].地震工程与工程振动,2022,42(06):144-152.[doi:10.13197/j.eeed.2022.0616]
　CHEN Jia,DING Yonggang,XU Qikeng,et al.Study on calculation method of dynamic lateral pressure of column-supported silo under earthquakes[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2022,42(06):144-152.[doi:10.13197/j.eeed.2022.0616]
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地震作用下柱承式筒仓动态侧压力计算方法研究
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《地震工程与工程振动》[ISSN:/CN:]

卷:
42
期数:
2022年06期
页码:
144-152
栏目:
第十一届全国地震工程学术会议专题
出版日期:
2022-12-31

文章信息/Info

Title:
Study on calculation method of dynamic lateral pressure of column-supported silo under earthquakes
作者:
陈佳1;  丁永刚1; 2;  许启铿1; 2;  刘强1;  索焕1
1. 河南工业大学 土木工程学院, 河南 郑州 450001;
2. 河南省粮油仓储建筑与安全重点实验室, 河南 郑州 450001
Author(s):
CHEN Jia1;  DING Yonggang1; 2;  XU Qikeng1; 2;  LIU Qiang1;  SUO Huan1
1. School of Civil Engineering, Henan University of Technology, Zhengzhou 450001, China;
2. Henan Key Laboratory of Grain and Oil Storage Facility & Safety, Zhengzhou 450001, China
关键词:
柱承式筒仓; 动态侧压力; 地震作用; 计算方法
Keywords:
column-supported concrete silo; dynamic lateral pressure; earthquake action; calculation method
分类号:
TU312TU399
DOI:
10.13197/j.eeed.2022.0616
摘要:
为研究筒仓结构动态侧压力计算方法，将地震作用下仓壁动态侧压力问题简化为支撑失效质量块的贮料壁板振动问题。假定筒仓结构处于线弹性范围，采用弹性壁板的振动模型推导了仓壁在地震作用下的动态侧压力计算公式；建立了柱承式筒仓结构动力有限元模型，通过数值分析和振动台试验结果验证了该方法的有效性；进而分析了筒仓结构在不同地震加速度峰值作用下的动态侧压力分布规律。结果表明：由推导的动态侧压力计算公式得到的理论值与试验值平均相对误差为3.0%，精度较高；柱承式筒仓结构的动态侧压力随加速度峰值的增加而增大；沿筒仓深度方向，动态侧压力呈“钟形分布”趋势；且动态侧压力峰值向仓壁中下部位置集中；对于设防烈度较高地区，建议在柱承式筒仓结构的柱顶和环梁位置采取加强措施，以保证结构的整体安全性。研究成果可为筒仓结构仓壁动态侧压力计算和结构设计提供理论依据。
Abstract:
In order to obtain the calculation method of dynamic lateral pressure of column-supported reinforced concrete slender silo under earthquake, the problem for the calculation of dynamic lateral pressure of silo wall under earthquake action is simplified to the vibration response of the silo wallboard supporting the wedge with a state of limiting failure, having no stiffness. Assuming that the silo structure is in linear elasticity, the vibration model of the elastic wall plate is used to develop the dynamic lateral pressure calculation method of the silo wall under earthquake action. Numerical examples and the shaking table test based on the dynamic finite element model of the columnsupported silo are carried out to demonstrate the effectiveness of this method with comparing the results and analysis. Based on this simplified method, the dynamic lateral pressure response of the silo structure in the case of the different seismic intensities is further studied. The results show that the dynamic lateral pressure calculation formula is reasonable and feasible, which can effectively reflect the lateral pressure distribution of silo wall under earthquake action. From a quantitative point of view, the method proposed in this paper has a high accuracy, given that the average relative error between the theoretical values obtained from the derived formula and the test values is 3.8%. From a qualitative perspective, the lateral pressure of the silo wall is increased with the increase of the acceleration peak. Along the depth of the silo, the distribution trend of the dynamic side pressure is ‘bell shape’, and the pressure peak is concentrated toward the middle and lower part of the silo wall. Therefore, for areas with high fortification intensity, the ring beam design should be strengthened on the silo wall bottom and the top of the column for reinforced concrete slender silo to ensure the safety of the overall structure. In the future, the calculation method could be a technical reference for the calculation method of dynamic lateral pressure of column-supported reinforced concrete slender silo under earthquake.

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备注/Memo

备注/Memo:
收稿日期:2022-06-28;改回日期:2022-09-07。
基金项目:河南省科技攻关计划项目(212102310955);河南工业大学博士基金项目(2020BS044)
作者简介:陈佳(1990-),女,博士研究生,主要从事工程结构抗震与仓储结构研究.E-mail:cyd1369@126.com
通讯作者:丁永刚(1978-),男,教授,博士,主要从事工程结构抗震与仓储结构研究.E-mail:cedyg@haut.edu.cn
更新日期/Last Update: 1900-01-01