考虑风险极限的建筑钢结构抗震延性检测仿真  

Simulation of Seismic Ductility Detection of Building Steel Structure Considering Risk Limits

作　　者：赵云丽 李冉 ZHAO Yun-Li;LI Ran(School of Civil Engineering,Zhengzhou University of Industrial Technology,Xinzheng Henan 451100,China;School of Civil Engineering,Zhengzhou University,Zhengzhou Henan 450001,China)

机构地区：[1]郑州工业应用技术学院建筑工程学院,河南新郑451100 [2]郑州大学土木工程学院,河南郑州450001

出　　处：《计算机仿真》2024年第8期562-566,共5页Computer Simulation

摘　　要：抗震延性是衡量建筑结构在地震荷载下是否具备足够延性和韧性的重要指标。传统的静力测试方法往往需要破坏性取样,对结构造成一定的损伤。为了解决传统方法中存在的问题,提出考虑风险极限的建筑钢筋结构抗震延性检测方法。通过三参数模型获取地震加速度反应谱,以描述地震的强度作用;建立建筑钢筋等效单自由度体系,并获取建筑钢筋的结构特征参数;在考虑风险极限的情况下,通过地震中建筑钢筋延性能力与地震中风险极限下建筑钢筋的延性需求值的对比,完成建筑钢筋结构的抗震延性检测。实验结果表明,所提方法的建筑钢筋结构抗震延性检测精度在85%以上,且准确度高、整体应用效果好。Seismic ductility is an important indicator for measuring whether a building structure has sufficient ductility and toughness under earthquake loads.Traditionally,the static testing methods often require destructive sampling,causing some damage to the structure.To address this issue,a method of detecting seismic ductility of building reinforced concrete structures considering risk limits was presented.Firstly,we used a three-parameter model to obtain the earthquake acceleration response spectrum,thus describing the intensity of the earthquake.Secondly,we constructed an equivalent single-degree-of-freedom system for building reinforced concrete and calculated the structural characteristic parameters of the building reinforced concrete.Considering the risk limits,we compared the ductility capacity of building steel reinforcement during earthquakes with the ductility demand value of that under the risk limit.Finally,we completed the seismic ductility detection of the building reinforced concrete structure.The experimental results show that the seismic ductility detection accuracy is more than 85% for building reinforced concrete structures.And the proposed method has high accuracy and overall good application performance.

关 键 词：风险极限 抗震延性检测 建筑钢筋结构 地震动加速度反应谱 等效单自由度体系 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]