基于Drucker-Prager Cap模型的装配式混凝土箱涵节段滞回性能研究
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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 antiseismic calculation and design of prefabricated box culvert segment.
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 antiseismic calculation and design of prefabricated box culvert segment.
引文
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[2]许浒,余志祥,赵世春.混凝土非线性分析中的非协调参数Drucker-Prager模型[J].四川大学学报(工程科学版),2012,44(4):75-80.XU Hu,YU Zhixiang,ZHAO Shichun. An incompatible DruckerPrager model applied in nonlinear analysis of concrete[J]. Journal of Sichuan University(Engineering Science Edition),2012,44(4):75-80.
[3] KOJI M,BATHE K J. Inelastic Analysis of Solids and Structures[M]. Berlin:Springer,2005.
[4]丛宇,孔亮,郑颖人,等.混凝土材料剪切强度的试验研究[J].混凝土,2015(5):40-45.CONG Yu,KONG Liang,ZHENG Yingren,et al. Experimental study on shear strength of concrete[J]. Concrete,2015(5):40-45.
[5]张琦,过镇海.砼抗剪强度和剪切变形的研究[J].建筑结构学报,1992,13(5):17-24.ZHANG Qi,GUO Zhenhai. Investigation on shear strength and shear strain of concrete[J]. Journal of Building Structures,1992,13(5):17-24.
[6]姜华,贺拴海,王君杰.混凝土弹塑性损伤帽盖模型参数确定研究[J].振动与冲击,2012,31(15):132-139.JIANG Hua,HE Shuanhai,WANG Junjie. Parameters determination of elasto-plastic damage cap model for concrete materials[J]. Journal of Vibration and Shock,2012,31(15):132-139.
[7]毕继红,瞿慎俊,逯鹏,等.反复荷载作用下钢筋混凝土箱涵的数值模拟[J].地震工程与工程振动,2014,34(5):150-156.BI Jihong,QU Shenjun,LU Peng,et al. Numerical simulation of reinforced concrete box culvert subjected to low-cyclic reversed loading[J]. Earthquake Engineering and Engineering Dynamics,2014,34(5):150-156.
[8]NILSONA H. Internal measurement of bond slip[J]. Journal of the American Concrete Institute,1972,69(7):439-441.
[9] MIRZA S M,HOUDE J. Study of bond stress-slip relationships in reinforced concrete[J]. Journal of the American Concrete Institute,1979,76(1):19-46.
[10]康占锋.考虑粘结滑移的钢筋混凝土非线性有限元分析方法研究[D].重庆:重庆大学,2007.KANG Zhanfeng. Nonlinear Finite Element Analysis of Reinforced Concrete Members with Bond-Slip Effect[D]. Chongqing:Chongqing University,2007.