Ni-Ti合金绞线与混凝土的粘结滑移本构关系  

Bond-slip constitutive model between Ni-Ti alloy strands and concrete

作　　者：孙丽[1] 冯燕忠[1] 崔迪[2] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]大连大学土木工程技术研究与开发中心,辽宁大连116622

出　　处：《辽宁工程技术大学学报（自然科学版）》2013年第3期342-348,共7页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(51008040;10902073);海岸及近海工程国家重点实验室开放基金资助项目(LP1114);辽宁省高等学校优秀科技人才支持计划资助项目(LR2012018)

摘　　要：Ni-Ti合金绞线与混凝土之间的粘结和锚固是二者能够协同工作的基础,Ni-Ti合金绞线与混凝土的粘结-滑移本构关系模型是其粘结锚固性能的综合反映.对64个试件进行单端拉拔试验,测定试件的粘结滑移曲线.结果表明:通过对其粘结破坏特征、粘结滑移机理及受力过程的分析,提出了一种新的粘结滑移本构关系模型,能较好地反映Ni-Ti合金绞线与混凝土的受力全过程,与试验结果吻合良好.The bond behavior is the basis of collaboration between Ni-Ti alloy strands and concrete.The bond-slip constitutive model is the overall reflection of bond behavior of Ni-Ti alloy strands embedded in concrete.The pull-out tests with 64 specimens were conducted and the bond-slip curves were obtained for each specimen.In this study,a new bond-slip constitutive model was proposed based on the analysis of bond failure,bond-slip mechanism and loading process of Ni-Ti alloy strands.The bond-slip constitutive model reflects the whole loading process of Ni-Ti alloy strand and the test results well.

关 键 词：Ni-Ti合金绞线 拉拔试验 本构关系模型 混凝土 粘结性能 粘结强度 数值模拟 应力公式 

分 类 号：TU377[建筑科学—结构工程]