两种升温-加载途径下钢筋混凝土压弯构件受力性能的试验及分析研究  

EXPERIMENTAL STUDY ON BEHAVIOUR OF ECCENTRICALLY COMPRESSED REINFORCED CONCRETE MEMBERS UNDER DIFFERENT HEAT-LOADING PATHS

作　　者：杨建平[1] 时旭东[1] 过镇海[1] 

机构地区：[1]清华大学,北京100084

出　　处：《工程力学》2001年第3期81-90,共10页Engineering Mechanics

基　　金：国家自然科学基金(59578033);国家教委博士点基金(96000344)

摘　　要：本文对12根三面加温(800(50(C)的钢筋混凝土压弯试件进行了不同升温-加载途径的试验，研究了先升温后加载(T-N途径)与先加载后升温(N-T途径)两种途径下试件耐火性能的差别。在理论分析上，通过增量法非线性分析程序计算了试件截面的温度曲率、荷载-曲率关系及其极限耐火能力等，并由试验数据所验证。Twelve eccentrically compressed RC members were tested under different heat-loading paths. Different fire resistance properties of the members are reported under different heat-loading paths. An increment nonlinear algorithm is developed to calculate the behaviour of the specimens. The relations of temperature and curvature, load and curvature, and the ultimate load of the specimens are given, which are verified by the test data.

关 键 词：高温 钢筋混凝土压弯试件 极限承载务 升温-加载途径 受力性能 

分 类 号：TU375[建筑科学—结构工程]