新型围垦堤防设防标准与设计方法研究
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摘要
以江苏苏北沿海东台条子泥特大型围垦工程为依托,围绕江苏沿海开发围垦中的关键技术问题,融汇理论分析、数值模拟、模型试验、现场监测等先进的手段和技术,提出堤防设防标准、堤防迎水坡防冲关键技术,以及基于潮位频繁变动下的堤防渗透变形多元判据;针对海堤工程位置水深较大,水下地形复杂,潮汐、波浪等水动力条件更加恶劣等条件,提出基于合理利用土地资源、岸线资源、保护环境、美化环境海堤的防护结构新型式,以及强震作用下的围堤液化成因及破坏机理;针对新时期围垦工程由高、中滩围涂向低滩围涂方向发展,对海堤建设提出的新要型的海堤结构;构建一整套沿海围垦工程中的围垦堤防稳定评估理论与方法体系以及安全保障技术。
Based on the large reclamation project of Tiazini in Dongtai City of northern Jiangsu Province and the key technical problems in the development of coastal reclamation in Jiangsu Province,the design standards,the anti-erosion key techniques of slopes as well as the seepage deformation evaluation conditions under frequent tidal changes for reclamation dikes are proposed by integrating advanced ways and techniques of theoretical analysis,numerical simulation,model test and field monitoring,etc.With regard to the specific situations of the sea dike,that is,deep water,complex underwater topography,severe hydrodynamic conditions of tides and waves,new protective modes for structures and liquefaction causes and failure mechanism of reclamation dikes under strong seismic action are put forward based on reasonable utilization of land resources,bank line resources,environmental protection and beautified dikes.New structure for the dikes is proposed to satisfy new reclamation development demands.The theories,methods and safety security techniques for stability assessment of reclamation dikes in coastal areas will be established.
Based on the large reclamation project of Tiazini in Dongtai City of northern Jiangsu Province and the key technical problems in the development of coastal reclamation in Jiangsu Province,the design standards,the anti-erosion key techniques of slopes as well as the seepage deformation evaluation conditions under frequent tidal changes for reclamation dikes are proposed by integrating advanced ways and techniques of theoretical analysis,numerical simulation,model test and field monitoring,etc.With regard to the specific situations of the sea dike,that is,deep water,complex underwater topography,severe hydrodynamic conditions of tides and waves,new protective modes for structures and liquefaction causes and failure mechanism of reclamation dikes under strong seismic action are put forward based on reasonable utilization of land resources,bank line resources,environmental protection and beautified dikes.New structure for the dikes is proposed to satisfy new reclamation development demands.The theories,methods and safety security techniques for stability assessment of reclamation dikes in coastal areas will be established.
引文
[1]高志伟.小洋山北海堤围垦工程技术研究[D].上海:上海交通大学,2008.
[2]张建民.地震液化后地基大变形的实用预测方法[C]//第八届土力学及岩土工程学术会议论文集.北京:万国学术出版社,1999:573-577.
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[4]张克绪,李明宰,常向前.地震引起的土坝永久变形分析[J].地震工程与工程震动,1989,9(1):91-100.
[5]刘汉龙,陆兆溱,钱家欢.土石坝地震永久变形分析[J].河海大学学报:自然科学版,1996,24(1):91-96.
[6]ZHANG J M,WANG G.A constitutive model for evaluatingsmall to large cyclic strain of saturated sand duringliquefaction process[J].岩土工程学报,2004,26(4):546-552.
[7]王刚,张建民.砂土液化大变形的弹塑性循环本构模型[J].岩土工程学报,2007,29(1):51-59.
[8]张建民,王建华.土动力学与土工抗震[C]//第八届土力学及岩土工程学术会议论文集.北京:万国学术出版社,1999:44-55.
[9]LI X S,MING H Y.Unified modeling of flow liquefaction andcyclic mobility[J].Soil Dynamics and EarthquakeEngineering,2000,19:363-369.
[10]徐柏龙.浅析沿海堤基无粘性土渗透变形的判别及其影响因素[J].岩土工程界,2008,11(8):43-45.
[2]张建民.地震液化后地基大变形的实用预测方法[C]//第八届土力学及岩土工程学术会议论文集.北京:万国学术出版社,1999:573-577.
[3]SHAMOTO Y,ZHANG JM,GOTO S.Mechanism oflarge postliquefaction deformation in saturated sand[J].Soils andFoundations,1996,37(2):71-80.
[4]张克绪,李明宰,常向前.地震引起的土坝永久变形分析[J].地震工程与工程震动,1989,9(1):91-100.
[5]刘汉龙,陆兆溱,钱家欢.土石坝地震永久变形分析[J].河海大学学报:自然科学版,1996,24(1):91-96.
[6]ZHANG J M,WANG G.A constitutive model for evaluatingsmall to large cyclic strain of saturated sand duringliquefaction process[J].岩土工程学报,2004,26(4):546-552.
[7]王刚,张建民.砂土液化大变形的弹塑性循环本构模型[J].岩土工程学报,2007,29(1):51-59.
[8]张建民,王建华.土动力学与土工抗震[C]//第八届土力学及岩土工程学术会议论文集.北京:万国学术出版社,1999:44-55.
[9]LI X S,MING H Y.Unified modeling of flow liquefaction andcyclic mobility[J].Soil Dynamics and EarthquakeEngineering,2000,19:363-369.
[10]徐柏龙.浅析沿海堤基无粘性土渗透变形的判别及其影响因素[J].岩土工程界,2008,11(8):43-45.
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