摘要
为研究超静定内置钢箱-混凝土组合梁的塑性设计方法,进行了4根两跨内置钢箱-混凝土连续组合梁试验,获得了试验梁裂缝分布与开展、变形发展、破坏特征及塑性内力重分布等方面的试验结果.通过分析,给出了内置钢箱-混凝土连续组合梁等效塑性铰区长度计算公式,提出了以支座控制截面弯矩弹性计算值与组合梁正截面破坏时钢箱所承担弯矩之差为调幅对象、以相对塑性转角为自变量的弯矩调幅设计方法.
In order to investigate the plastic design method of indeterminate encased steel box concrete beam （ ESBCB）, 4 two - span continuous ESBCBs are tested, and then the distribution and growth of crack, deformation, failure characteristics and redistribution of plastic internal force are obtained. The calculation formula of the length of equivalent plastic hinge of ESBCBs is presented. A design method for moment modification is put forward, in which the object of moment modification is the difference between the elastic calculated moment of critical section at intermediate support and the moment subjected to the steel box when the composite beam reaching the limit state of bending capacity, and the variable is the relative plastic rotation.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2010年第2期186-192,共7页
Journal of Harbin Institute of Technology
基金
教育部新世纪优秀人才支持计划资助项目(教科司[2005]290号)
黑龙江省科技攻关资助项目(GC04A609)
关键词
内置钢箱-混凝土连续组合梁
受力性能
内力重分布
等效塑性铰区长度
弯矩调幅
continuous encased steel box concrete beam （ESBCB）
mechanical behavior
redistribution of internal force
length of equivalent plastic hinge
moment modification
