基于CESMD数据的楼面加速度放大系数研究
Study on floor acceleration amplification factor based on data from CESMD
王涛 1潘蕊 1孟丽岩 1刘吉胜1
作者信息
- 1. 黑龙江科技大学 建筑工程学院,哈尔滨 150022
- 折叠
摘要
为了合理地估算楼面加速度放大系数(f),确定施加在加速度敏感型非结构构件上的地震作用力,基于CESMD地震数据库中73 座混凝土结构的地面和楼面加速度实测数据,给出不同高度类型、场地类别以及地震强度的混凝土结构f抛物线参数值与房屋顶层f的取值建议,采用台湾集集地震实测数据验证基于抛物线模型的f正确性.研究表明,多层和高层混凝土结构,随着输入地面峰值加速度的增大,不同场地类别相差85%和43%,f与场地类别相关,以往研究并未指出,所拟合f的抛物线曲线可较好地反映出混凝土结构实测f的分布特点.该研究为加速度敏感型非结构构件的设计提供了f的取值建议.
Abstract
This paper aims to reasonably estimate the floor acceleration amplification factor(f)and determine the seismic force applied to the acceleration-sensitive nonstructural components.Based on the measured data of ground and floor accelerations of 73 concrete structures in CESMD database(Center for Engineering Strong Motion Data),the study involves defining the value range between the f-parabolic pa-rameter values of concrete structures with different height types,site categories,ground motion intensities and the f-value of top floor;and verifying the correctness of f based on parabolic model by using the measured data of Chi-Chi earthquake.The results show that for multi-story and high-rise concrete build-ings,with the increase of input PGA,the differences between different site categories are 85%and 43%,and f is related to site category,which has not been pointed out in previous studies.The parabolic curve of the fitted f can better reflect the distribution characteristics of the measured f of the concrete structure.The study provides suggestions for the value of f for the design of acceleration-sensitive non-structural components.
关键词
加速度敏感型非结构构件/楼面加速度放大系数/抛物线模型Key words
acceleration-sensitive nonstructural components/floor acceleration amplification factor/parabolic model引用本文复制引用
基金项目
国家自然科学基金(5227817352078398)
出版年
2024
国家科技期刊平台
NSTL
万方数据