基于Drucker-Prager Cap模型的装配式混凝土箱涵节段滞回性能研究  

Hysteretic Behavior of Prefabricated Concrete Box Culvert Section Based on Drucker-Prager Cap Model

作　　者：杜青 郝景钊 卿龙邦 DU Qing;HAO Jingzhao;QING Longbang(School of Civil and Transportation Engineering,Hebei University of Technology,Tianjin 300401,P.R.China)

机构地区：[1]河北工业大学土木与交通学院

出　　处：《重庆交通大学学报（自然科学版）》2019年第7期20-25,共6页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：国家自然科学基金资助项目(51309073)

摘　　要：在利用有限元软件ADINA对预制钢筋混凝土箱涵结构进行滞回性能分析中,计算往往比较难收敛,而ADINA中提供的基于Drucker-Prager屈服条件、拉伸截断、帽盖硬化等准则的Drucker-Prager Cap模型,在对混凝土进行数值分析时收敛容易,且计算速度较快,并通过比较,发现采用基于该模型建立的数值模型计算得到的滞回曲线与试验得到的结果吻合程度较高,模拟结果较为准确。这一成果可以通过数值模拟的方式获得预制钢筋混凝土箱涵的滞回曲线与相关数据,可应用于预制箱涵节段抗震计算和设计。In the analysis of hysteretic behaviour of prefabricated box culvert structure by finite element software ADINA,the calculation was often difficult to converge.The Drucker-Prager Cap model based on Drucker-Prager yield condition,tensile truncation and cap hardening criteria provided in ADINA was easy to converge and fast to calculate in numerical analysis of concrete.It is found that the hysteresis curves calculated by the numerical model based on the Drucker-Prager Cap model are in good agreement with the experimental results,and the simulation results are more accurate.The hysteretic curve and related data of prefabricated box culvert can be obtained by numerical simulation,which can be applied to anti-seismic calculation and design of prefabricated box culvert segment.

关 键 词：桥梁工程 装配式箱涵节段 滞回曲线 ADINA Drucker-PragerCap模型 

分 类 号：U449.1[建筑科学—桥梁与隧道工程]