多载荷作用下盾构支承环加强筋分布设计及Ansys优化研究
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摘要
首先,运用能量法从理论上对盾构支承环刚度、强度进行建模,计算了多载荷作用下的位移、应力;其次,对支承环加强筋进行了分布设计,得到了轴向或环向单一方向加强筋支承环及轴向环向加强筋支承环;将这几套支承环导入Ansys中,进行静力分析,得出轴向、环向单一方向加强筋支承环刚度不足,轴向环向同时加强筋支承环刚度较好;在此基础上,设计出一套刚度好、应力分布均匀的轴向环向加强筋错开支承环;再次,基于应力均方差最小原则对轴向环向加强筋错开支承环进行了优化设计,优化后的支承环应力均方差明显降低,优化结果与理论计算值较为吻合。
Firstly, using energy method to model the stiffness and strength of shield support ring, the displacement and stress under multi-load are calculated. Secondly, the reinforcing bars of the supporting ring are distributed and designed, and the axial or ring direction of the reinforcement ring and the axial ring are strengthened. And the static analysis is carried out in the import of these sets of supporting rings in Ansys,it is concluded that the stiffness of the ring is not sufficient in the axial direction and the ring direction in the single direction. On the basis of this,a set of axial-ring with uniform rigidity and uniform stress distribution is designed. Again,based on the principle of stress and minimum mean square offset axial-ring stiffener to stagger the supporting ring were optimized,the optimized bearing ring stress significantly lower mean square offset,the optimization result tallies with the theoretical calculation values.
Firstly, using energy method to model the stiffness and strength of shield support ring, the displacement and stress under multi-load are calculated. Secondly, the reinforcing bars of the supporting ring are distributed and designed, and the axial or ring direction of the reinforcement ring and the axial ring are strengthened. And the static analysis is carried out in the import of these sets of supporting rings in Ansys,it is concluded that the stiffness of the ring is not sufficient in the axial direction and the ring direction in the single direction. On the basis of this,a set of axial-ring with uniform rigidity and uniform stress distribution is designed. Again,based on the principle of stress and minimum mean square offset axial-ring stiffener to stagger the supporting ring were optimized,the optimized bearing ring stress significantly lower mean square offset,the optimization result tallies with the theoretical calculation values.
引文
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[2]管会生,吴和北,陶伟.深埋斜井隧道双模式盾构刀盘驱动扭矩分析[J].现代隧道技术,2015,52(6):162-168.
[3]黄志影,戎青青.土压平衡盾构机盾壳荷载的计算分析[J].设计与计算,2016(3):34-38.
[4]郑鹏,吴琳.土压平衡盾构机盾壳的应力分析及改进[J].计算机应用,2015(1):70-74.
[5]庄欠伟.打浦路隧道Φ11.22m盾构机支承环有限元分析[C].地下工程建设与环境和谐发展--第四届中国国际隧道工程研讨会文集,2009.
[6]Deng,K.,Tang,X.,Wang,L.,and Chen,X.Force transmission characteristics for the non-equidistant arrangement thrust systems of shield tunneling machines[J].Automation in Construction,2011,20(5):588-595.
[7]凌伟,文毅,殷民.材料力学:IV[M].西安:西安交通大学出版社,2014.
[8](美)费迪南德P.比尔,著,陶秋帆,范钦珊译.材料力学:VI[M].北京:机械工业出版社,2012.
[9]田涛.上海黄浦江翔殷路越江隧道拟1.58米盾壳钢结构制作工程[C].银川全国钢结构学术年会论文集,2011.
[10]陈冬民,王丽娟.基于等效原理的板壳结构加强筋设计方法[J].机械科学与技术,2015,34(12):1841-1845.
[11]Rong Xian.Seismic Behariar of specially shaped column joints with X-shaped reinforce[J].Transactions of Tianjin University,2013,19(2).
[12]沈乐.螺栓连接加筋平盖的优化设计探讨[J].山东化工,2017,46(18):150-152.
[13]D.Wang Buckling optimization design of curved stiffeners for grid-stiffened composite structures[J].Composite Structures,2017(159):656-666.
[14]陈韶章,洪开绒.复合地层盾构设计概论[M].北京:人民交通出版社,2010.
[15](美)诺顿著,黄平,李静蓉译.机械设计:V[M].北京:机械工业出版社,2015.11.
[16]邓小梅,刘海云.壳体加强筋设计[J].江西化工,2016(2):211-213.
[17]D.KongShu,T.Xiaoqiang,W.Liping,F.Pingfa,C.Xu.Force transmission characteristics for the non-equidistant arrangement thrust systems of shield tunneling machines[J].Autom.Constr.2011,20(5):588-595.
[18]曹渊.ANSYS 16.0有限元分析从入门到精通[M].北京:电子工业出版社,2016.