ANSYS在云龙水库心墙堆石坝三维地震反应分析中的应用
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摘要
对比研究了瞬态热传导方程和孔压增长消散方程,提出了一种利用ANSYS温度—结构耦合场进行土石坝有效应力动力分析的方法,这种方法通过动态调整材料参数,使总应力分析更加贴近实际情况,因此是一种改进的TT方法。这种方法具有很好的计算稳定性,适合用于长持时的地震反应分析。最后,利用这种方法对对云龙水库心墙堆石坝进行了动力计算,得到了有价值的结论。
After comparing the transient heat conduction equation and the pore pressure generation-dissipation equation,this thesis presented a simplified method,basing on which we could apply the thermal-structure coupled field module of ANSYS to analyze the dynamic response of earth-rock dam conveniently.This method is similar to TT method,though,it is more appropriate to call it an improved TT method,because in this method the mechanical parameters of the soil materials are adjusted continually to simulate the coupled effect between the distortion of the soil skeleton and the dissipation of the pore pressure,which leads to a more precise simulation of the real condition.Finally,this approach was applied to calculate the three-dimensional seismic response of the earth core rockfill dam of Yunlong reservoir;and some valuable conclusions were drawn.
After comparing the transient heat conduction equation and the pore pressure generation-dissipation equation,this thesis presented a simplified method,basing on which we could apply the thermal-structure coupled field module of ANSYS to analyze the dynamic response of earth-rock dam conveniently.This method is similar to TT method,though,it is more appropriate to call it an improved TT method,because in this method the mechanical parameters of the soil materials are adjusted continually to simulate the coupled effect between the distortion of the soil skeleton and the dissipation of the pore pressure,which leads to a more precise simulation of the real condition.Finally,this approach was applied to calculate the three-dimensional seismic response of the earth core rockfill dam of Yunlong reservoir;and some valuable conclusions were drawn.
引文
[1]谢康和,周健.岩土工程有限元分析理论与应用[M].北京:科学出版社,2002.9-20,100-101.
[2]朱百里,沈珠江.计算土力学[M].上海:上海科学技术出版社,1990.134-138.
[3]周健,董鹏,戚佩江.灰渣坝抗震稳定性的三维有效应力动力分析[J].工业建筑,2000,30(6):45-48.ZHOU Jian,DOHG Peng,QI Pei-jiang.Dynamic analysis of three-dimensional effective stress of aseismatic stability for ash dam[J].Industrial Construction,2000,30(6):45-48.
[4]陈仲颐,周景星,王洪瑾.土力学[M].北京:清华大学出版社,1994.346-349.
[5]雷晓燕.岩土工程数值计算[M].北京:中国铁道出版社,1999.233-237.
[6]Maosong Huang,Shiming Wu,Zienkiewicz O C.Incompressible or nearly incompressible soil dynamic behaviour—A new staggered algorithm to circumvent restrictions of mixed formulation[J].Soil Dynamics and Earthquake Engineering,2001,21:169-179.
[7]Maosong Huang,Zienkiewicz O C.New unconditionally stable staggered solution procedures for coupled soil-pore fluid dynamic problems[J].International Journal for Numerical Methods in Engineering,1998,43:1 029-1 052.
[8]Jean H Prevost.Partitioned solution procedure for simultaneous integration of coupled-field problems[J].Communications in Numerical Methods in Engineering,1997,13:239-247.
[9]Peter Kohnke,Ph.D,Ansys,Inc Theory,Ansys Inc.1994.
[10]王玲玲,何蕴龙.堆石坝地震反应分析[J].人民长江,2003,34(6):20-22.WANG Ling-ling,HE Yun-long.Analysis on seismic response of rockfill dam[J].Yangtze River,2003,34(6):20-22.
[2]朱百里,沈珠江.计算土力学[M].上海:上海科学技术出版社,1990.134-138.
[3]周健,董鹏,戚佩江.灰渣坝抗震稳定性的三维有效应力动力分析[J].工业建筑,2000,30(6):45-48.ZHOU Jian,DOHG Peng,QI Pei-jiang.Dynamic analysis of three-dimensional effective stress of aseismatic stability for ash dam[J].Industrial Construction,2000,30(6):45-48.
[4]陈仲颐,周景星,王洪瑾.土力学[M].北京:清华大学出版社,1994.346-349.
[5]雷晓燕.岩土工程数值计算[M].北京:中国铁道出版社,1999.233-237.
[6]Maosong Huang,Shiming Wu,Zienkiewicz O C.Incompressible or nearly incompressible soil dynamic behaviour—A new staggered algorithm to circumvent restrictions of mixed formulation[J].Soil Dynamics and Earthquake Engineering,2001,21:169-179.
[7]Maosong Huang,Zienkiewicz O C.New unconditionally stable staggered solution procedures for coupled soil-pore fluid dynamic problems[J].International Journal for Numerical Methods in Engineering,1998,43:1 029-1 052.
[8]Jean H Prevost.Partitioned solution procedure for simultaneous integration of coupled-field problems[J].Communications in Numerical Methods in Engineering,1997,13:239-247.
[9]Peter Kohnke,Ph.D,Ansys,Inc Theory,Ansys Inc.1994.
[10]王玲玲,何蕴龙.堆石坝地震反应分析[J].人民长江,2003,34(6):20-22.WANG Ling-ling,HE Yun-long.Analysis on seismic response of rockfill dam[J].Yangtze River,2003,34(6):20-22.
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