植钢技术的锚固性能与锚固深度的试验与仿真  

Test and Numerical Simulation Study on Bond-Anchorage and Anchorage Length of Embedded Steel in Concrete

作　　者：习会峰[1,2] 穆建春[1] 王志刚[1] 马宏伟[3] 

机构地区：[1]广东石油化工学院建筑工程学院,广东茂名525000 [2]华南理工大学土木与交通学院,广东广州510640 [3]暨南大学理工学院,广东广州510632

出　　处：《沈阳建筑大学学报（自然科学版）》2013年第6期977-982,共6页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(11072089);广东省科技计划项目(2011A030200016;2012B031000023)

摘　　要：目的研究植钢锚固技术的锚固性能,预测不同型号角钢在不同强度混凝土下的合理锚固深度.方法在不同强度下的混凝土中植入不同型号角钢,进行静力拉拔正交试验,在试验结果基础上进行了拉拔试验过程中的仿真分析.结果正交试验结果得到了植钢技术的锚固性能、角钢的应力分布情况和整个加载过程的荷载-滑移曲线.荷载-滑移曲线可分为三段式,对它进行拟合得到型钢-混凝土界面的荷载-滑移之间的关系式.采用ANSYS有限元程序进行角钢混凝土结构的数值模拟,详细介绍了非线性弹簧单元(Combination39单元)对型钢混凝土粘结滑移进行准确模拟的实用方法.结论数值模拟结果与试验结果吻合较好.预测了工程中不同型号角钢的合理锚固深度.可为植钢技术的数值模拟、理论研究和工程设计提供参考.In this paper, the bond-anchorage property was studied, and the anchorage lengths of embedded steel in concrete were forecasted. Though the pull-out orthogonal of adhesive steel in concrete was tested, the whole pull-out procedure was simulated based on the test resultants. The anchorage property, the stress distri- butions and the load-slip curves of different style angle steel with different grade concrete were obtained. The load-slip curves were divided into three stages, and the relationship was obtained by fitting the curves. The ANSYS program was used to simulate the steel concrete structure. The simulation method by Combination 39 element for the load-slip was introduced in detail. The numerical simulation is a practical approach. The sim- ulation results agree well with the experiment results. Anchorage lengths were calculated, and the results can provide a reference for numerical simulation, engineering design and theoretical research of embedded steel in concrete.

关 键 词：植钢技术 拉拔试验 粘结滑移 锚固长度 

分 类 号：TU398.9[建筑科学—结构工程]