钢筋混凝土网格剪力墙双参数地震损伤模型及损伤分析  

Two-parameter earthquake damage model and damage analysis of reinforced concrete grid shear walls

作　　者：张微敬[1] 杨功达 ZHANG Weijing;YANG Gongda(Faculty of Architecture,Civil and Transportation Engineering,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学城市建设学部,北京100124

出　　处：《地震工程与工程振动》2024年第3期73-83,共11页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(52078012)。

摘　　要：为了研究钢筋混凝土网格剪力墙在地震作用下的损伤演化规律,对已有钢筋混凝土构件双参数地震损伤模型进行修正,提出了适用于网格剪力墙的地震损伤模型;利用灰色关联方法,对网格剪力墙试验信息进行分析,确定关键设计参数,给出损伤模型中的组合系数计算公式。研究了剪跨比、轴压比、竖肢宽度和横肢高度等参数对网格墙损伤的影响,得到网格剪力墙主要影响参数与损伤演化的关系。基于所提出的损伤模型,计算了网格剪力墙的损伤指数,根据网格剪力墙构件破坏程度将其划分为基本完好、轻微破坏、中度破坏、严重破坏和倒塌失效5个损伤等级,标定了不同损伤等级的损伤指数区间。In order to study the damage evolution law of reinforced concrete grid shear wall under earthquake action,the existing two-parameter earthquake damage model of reinforced concrete members is modified,and the earthquake damage model suitable for grid shear wall is proposed.Using the grey incidence method,the test information of grid shear wall is analyzed,the key design parameters are determined,and the formula for calculating the combined coefficient of damage model is given.The effects of shear span ratio,axial load ratio,vertical limb width and transverse limb height on the damage of grid shear wall are studied,and the relationship between the main parameters and the damage evolution of grid shear wall is obtained.Based on the proposed damage model,the damage index of grid shear walls is calculated.According to the damage state of specimens,grid shear walls were divided into five damage levels including basically intact,mild damage,moderate damage,severe damage and collapse failure,and the damage index range of different damage states was calibrated.

关 键 词：网格剪力墙 地震损伤模型 损伤指数 组合系数 损伤分析 

分 类 号：TU375[建筑科学—结构工程]