HRB500钢筋轻骨料混凝土柱轴压承载力试验研究及可靠度分析  

Test and reliability analysis of the axial compressive bearing capacity of HRB500 reinforced lightweight aggregate concrete columns

作　　者：张威 邵永健[1] 朱号令 ZHANG Wei;SHAO Yongjian;ZHU Haoling(School of Civil Engineering,Suzhou University of Science and Technology,Suzhou 215011,China)

机构地区：[1]苏州科技大学土木工程学院,江苏苏州215011

出　　处：《混凝土与水泥制品》2024年第1期51-55,共5页China Concrete and Cement Products

摘　　要：为了研究高强钢筋页岩陶粒混凝土轴压柱的承载力,制作了8根试件,研究了配筋率、配箍率、混凝土强度等对其承载力和破坏形态的影响。此外,得到了相关文献的有关统计参数,采用JC法,并利用Matlab软件编程迭代求解高强钢筋页岩陶粒混凝土轴压柱的可靠度指标。结果表明:在其他设计参数相同前提下,轴压柱的可靠度指标随着配筋率、配箍率、稳定系数以及截面面积的增大而增大,随着荷载效应比的增大而降低;JGJ/T 12—2019《轻骨料混凝土应用技术标准》中的轴心受压承载力计算公式可以满足GB 50068—2018《建筑结构可靠性设计统一标准》中的可靠指标要求。In order to study the reliability of high-strength reinforced shale ceramsite concrete columns under axial compression,8 specimens were made and the effects of factors such as reinforcement ratio,hoop ratio,and concrete strength on the bearing capacity and failure mode were studied.In addition,relevant statistical parameters of the specimens were obtained by analyzing relevant literature,and the JC method was used to iteratively solve the reliability index of high-strength reinforced shale ceramsite concrete axial compression columns by using Matlab software programming.The results show that under the same design parameters,the reliability index of axial compression columns increases with the increase of reinforcement ratio,hoop ratio,concrete strength,and cross-sectional area,but decreases with the increase of load ratio.The analysis also indicates that the formula for calculating the axial compressive bearing capacity of the JGJ/T 12—2019 Technical Standard for Application of Lightweight Aggregate Concrete can meet the requirements of the reliability index in the GB 50068—2018 Unified Standard for Reliability Design of Building Structures.

关 键 词：高强钢筋 页岩陶粒混凝土 轴压柱 承载力 可靠度 

分 类 号：TU528.7[建筑科学—建筑技术科学]