摘要
为探究采用ANSYS15.0中何种单元类型能更好地模拟钢筋与混凝土之间的粘结滑移现象,针对其单元类型的选择做进一步研究。选用ANASYS15.0中刚性接触面常用的"目标单元"TARGET170来模拟刚性体–混凝土接触面,用"接触单元"CONTACT174模拟柔性体–钢筋接触面,二者通过共用实常号构成刚–柔"接触对",用来模拟分析钢筋与混凝土之间的接触现象。通过分析钢筋与混凝土之间的接触应力和相对滑移距离得出接触单元的可靠性。研究结果表明:钢筋与混凝土之间接触应力和滑移距离均由梁两端向跨中逐渐增大,这与实际钢筋混凝土梁在跨中荷载得到的情况非常符合,证明选用单元类型和钢筋混凝土模型模拟钢筋混凝土之间的粘结滑移现象是可靠的,为建筑软件分析中单元类型的选择提供可靠参考。
In order to investigate the particular type of element in ANSYS15.0 which can better simulate the bond slip between steel and concrete, this paper makes a further study on the selection of its unit type. Select the ANASYS15.0 rigid contact surface commonly used ＂the target unit＂ TARGET170 to simulate rigid concrete contact surface, the contact element CONTACT174 to simulate flexible reinforced contact surface, two through the sharing of real number often constitute rigid-flexible ＂contact pairs are used to simulate contact phenomenon between steel bars and concrete. Reliability of stress and relative slip distance from the contact unit through the analysis of the contact between reinforcement and concrete. The research results show that the contact stress between steel and concrete and the sliding distance by the two ends of the beam at the midspan increases gradually, and this is consistent with the actual reinforced concrete beams in the midspan load situation, unit type and reinforced concrete model used in this paper to simulate the reinforced concrete bond slip between the concrete phenomenon is reliable. To provide a reliable reference for the construction unit in the choice of the type of analysis software.
出处
《建筑技术开发》
2018年第2期107-109,共3页
Building Technology Development
基金
西宁火车站综合改造工程混凝土结构耐久性研究项目(2010-001-2b)
