沉入式大直径圆筒结构地震响应分析
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摘要
利用ABAQUS有限元软件建立大直径圆筒结构数值分析模型,研究单向实测地震波作用下大直径圆筒结构动力响应,得出如下结论:筒外土体沿地震波传递方向位移变化最大,筒底附近应力最大且最先出现塑性破坏;筒内土体在自由端位移变化最大,地震波最大峰值过后筒体与筒内土体出现反复脱离、滑移和黏合现象;筒体在自由端位移变化最大,筒体底部应力最大,而且有较大的环向弯矩。研究成果可为沉入式大直径圆筒结构设计提供理论依据。
By conducting the numerical model of large-diameter cylinder structure by using the finite element analyzing software ABAQUS,the response of the large diameter cylindrical structure with actual seismic waves is studied. It is concluded that the largest displacement of the soil outside takes place along with the spread direction of the seismic waves,and the strongest mises,plastic damage nearby the bottom of the structure,in addition,the largest displacement of the soil inside is on the top. The structure and soil inside are separated,slipped from each other and then felted after the peak of the waves.There is also the largest displacement on the top of the structure and the strongest mises,hoop moment at the bottom. The study is helpful for some related design.
By conducting the numerical model of large-diameter cylinder structure by using the finite element analyzing software ABAQUS,the response of the large diameter cylindrical structure with actual seismic waves is studied. It is concluded that the largest displacement of the soil outside takes place along with the spread direction of the seismic waves,and the strongest mises,plastic damage nearby the bottom of the structure,in addition,the largest displacement of the soil inside is on the top. The structure and soil inside are separated,slipped from each other and then felted after the peak of the waves.There is also the largest displacement on the top of the structure and the strongest mises,hoop moment at the bottom. The study is helpful for some related design.
引文
[1]王元战,王文良.大圆筒结构计算及工程应用[M].人民交通出版社,2008.
[2]陈国兴.岩土地震工程学[M].科学出版社,2007.
[3]周健,谢康和.岩土工程有限元理论和应用[M].科学出版社,2002.
[4]陈福全,龚晓南.大直径圆筒码头结构的有限元分析[J].水利水运工程学报,2001(4):37-40.
[5]李晓舟,吴相豪.大直径圆筒结构墙前后土压力数值分析[J].计算机辅助工程,2008(3):12-15.
[6]GB/T17742-1999《中国地震烈度表》.
[7]American Petroleum Institute.Recommended practice for planningⅠ,Designing and Constructing Fixed Offshore Platforms[M].API Publishing Services:Washington,D.C,2000.
[8]庄海洋,陈国兴,梁艳仙.土体动非线性粘弹性模型及其在ABAQUS软件上的实现[J].岩土力学(录用).
[9]庄海洋,陈国兴,朱定华.土体动力粘塑性记忆型嵌套面本构模型及其验证[J].岩土工程学报,2006(10):267-270.
[10]顾培英,陈中一,王五平.大圆筒码头结构模型振动台试验研究[J].中国港湾建设,2000(3):21-24.
[11]辛鸿博,王余庆,高艳平.中国尾矿坝地震安全度—1976年大石河尾矿坝二维总应力地震反应分析[J],工业建筑,1995(8);43-46.
[2]陈国兴.岩土地震工程学[M].科学出版社,2007.
[3]周健,谢康和.岩土工程有限元理论和应用[M].科学出版社,2002.
[4]陈福全,龚晓南.大直径圆筒码头结构的有限元分析[J].水利水运工程学报,2001(4):37-40.
[5]李晓舟,吴相豪.大直径圆筒结构墙前后土压力数值分析[J].计算机辅助工程,2008(3):12-15.
[6]GB/T17742-1999《中国地震烈度表》.
[7]American Petroleum Institute.Recommended practice for planningⅠ,Designing and Constructing Fixed Offshore Platforms[M].API Publishing Services:Washington,D.C,2000.
[8]庄海洋,陈国兴,梁艳仙.土体动非线性粘弹性模型及其在ABAQUS软件上的实现[J].岩土力学(录用).
[9]庄海洋,陈国兴,朱定华.土体动力粘塑性记忆型嵌套面本构模型及其验证[J].岩土工程学报,2006(10):267-270.
[10]顾培英,陈中一,王五平.大圆筒码头结构模型振动台试验研究[J].中国港湾建设,2000(3):21-24.
[11]辛鸿博,王余庆,高艳平.中国尾矿坝地震安全度—1976年大石河尾矿坝二维总应力地震反应分析[J],工业建筑,1995(8);43-46.
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