舟山海堤沉降稳定分析
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摘要
以舟山某典型海堤为研究对象,建立了材料不同状态本构模型。采用连续性介质力学三维弹塑性有限单元法,结合动力、静力加载方式,分别设置弹塑性条件;对结构整体、框架、桩基础进行稳定对比分析。结果表明:沉降主要发生在淤泥层位置,同时钻孔灌注桩基对控制软基条件下结构的位移及应力均有显著效果,最大位移不超过5 cm、最大应力也在安全范围内,故断定堤坝总体安全。
Taking a typical seawall in Zhoushan as the research object, this paper established constitutive models of materials in different states. Combined with dynamic and static load mode,itadopted3 d elastoplastic finite element method of continuous medium mechanics and set the elastoplastic conditions,respectively. This paper carriedout the stability comparison analysis to the structure integrity, the frame and the pile foundation. The results showed that the subsidence mainly occuredin the silt layer and the pile foundation ofdrilling perfusion had significant effect on controlling the displacement and stress of the structure under the condition of soft foundation. The maximum displacement is no more than 5 cm and the maximum stress is within the safe range, so the overall damsafety can be determined.
Taking a typical seawall in Zhoushan as the research object, this paper established constitutive models of materials in different states. Combined with dynamic and static load mode,itadopted3 d elastoplastic finite element method of continuous medium mechanics and set the elastoplastic conditions,respectively. This paper carriedout the stability comparison analysis to the structure integrity, the frame and the pile foundation. The results showed that the subsidence mainly occuredin the silt layer and the pile foundation ofdrilling perfusion had significant effect on controlling the displacement and stress of the structure under the condition of soft foundation. The maximum displacement is no more than 5 cm and the maximum stress is within the safe range, so the overall damsafety can be determined.
引文
[1]左林勇,谢红强,何江达,等.基于ANSYS的岩质边坡楔体稳定分析系统开发[J].路基工程,2009(5):111-113.
[2]张从联,朱峰,李维涛,等.上海、浙江、福建三省市海堤现状调查[J].水利水电科技进展,2008,28(2):51-55.
[3]刘敏.海堤加固整治工程设计探讨[J].科技资讯,2008(10):24-25.
[4]熊焱.关于某海堤软土路堤的稳定性分析[J].岩土工程界,2008,11(8):38-40.
[5]刘建飞,任红侠,吴兵,等.淤泥质地基海堤与水闸连接段沉降控制[J].人民黄河,2015(10):99-102+107.
[6]邵继彭,魏小东.天津市海堤防潮工程建设与管理存在问题和解决对策探讨[J].海河水利,2017(S1):80-82+111.
[7]蔡小芳.上海地区海堤整体稳定安全性分析[J].水利技术监督.2017(5):89-92.
[8]羊炜.软土地基上模袋围堰稳定分析方法研究[D].广州:华南理工大学,2011.
[9]聂守智.基于有限元强度折减法的边坡稳定性数值研究[D].西安:西安理工大学,2010.
[10]高峰.滨海软基上膜袋围堰稳定性分析及沉降预测研究[J].岩土力学.2010(4):1233-1237.
[2]张从联,朱峰,李维涛,等.上海、浙江、福建三省市海堤现状调查[J].水利水电科技进展,2008,28(2):51-55.
[3]刘敏.海堤加固整治工程设计探讨[J].科技资讯,2008(10):24-25.
[4]熊焱.关于某海堤软土路堤的稳定性分析[J].岩土工程界,2008,11(8):38-40.
[5]刘建飞,任红侠,吴兵,等.淤泥质地基海堤与水闸连接段沉降控制[J].人民黄河,2015(10):99-102+107.
[6]邵继彭,魏小东.天津市海堤防潮工程建设与管理存在问题和解决对策探讨[J].海河水利,2017(S1):80-82+111.
[7]蔡小芳.上海地区海堤整体稳定安全性分析[J].水利技术监督.2017(5):89-92.
[8]羊炜.软土地基上模袋围堰稳定分析方法研究[D].广州:华南理工大学,2011.
[9]聂守智.基于有限元强度折减法的边坡稳定性数值研究[D].西安:西安理工大学,2010.
[10]高峰.滨海软基上膜袋围堰稳定性分析及沉降预测研究[J].岩土力学.2010(4):1233-1237.