荷载变量相关下直立式防波堤的可靠度

郄禄文

荷载变量相关下直立式防波堤的可靠度

郄禄文

天津大学, 建工学院, 天津, 300072;河北大学, 机械与建工学院, 河北, 保定, 071002

基金项目: 国家自然科学基金资助项目(50279028)

计量
- 文章访问数: 717
- HTML全文浏览量: 8
- PDF下载量: 745
- 被引次数: 0
出版历程
- 收稿日期: 2003-11-07
- 修回日期: 2004-02-24

Reliability of vertical breakwaters with correlated load variables

QIE Lu-wen

School of Civil Engineering, Tianjin University, Tianjin 300072, China;College of Machinery and Civil Engineering, Hebei University, Baoding 071002, China

摘要

摘要: 为了探讨独立或相关荷载变量对结构可靠指标(β)值的影响,利用广义随机空间极限状态曲面上任一点处切平面法线来确定可靠指标,从而将在欧洲通用的确定直立式防波堤可靠指标的Hasofer和Lind方法推广至适用于波浪水平力与浮托力之间相关的情况.对一座直立堤实例的核算表明,在变量相关情况下采用改进的JC法或推广的HL法得出可靠指标值符合良好,而荷载相关时的可靠指标值则明显低于假定荷载独立时的结果.
- 直立式防波堤 /
- 可靠指标 /
- 变量相关
Abstract: In order to compare the possible influence on reliability index β values of structure in assuming that the load variables are independent or correlated,the normal of tangent plane at one point on the limit state surface is used to determine the β values.The Hasofer-Lind method,which is generally used in Europe for determining the reliability index β of vertical breakwater,is extended in a generalized stochastic space to be applicable to the condition of the horizontal wave force being correlated with uplift.The calcu lation for a practical example of vertical breakwater shows that the values of β obtained by the improved JC method and this new method (extended HL method) are coincided well with the case of correlated variables,and the β value for the case of correlated variables is obviously smaller than that for the case of independent variables.
- vertical breakwater /
- reliability index /
- correlated variables

HTML全文

参考文献(9)

JTJ298-98,防波堤设计与施工规范[S].

XIE Shi-leng,LIU Ying.Reliability based design of vertical breakwaters [A].Proceedings of International Conference on Port Development for the Next Millennium[C].Hong Kong:Hong Kong Institution of Engineers,1992.419-423.

BURCHARTH HF,SORENSEN J Dalsgaard,CHRISTIA Erik.On the evaluation of failure probability of monolithic vertical wall breakwaters[A].Proceedings of Wave Barriers in Deep Waters[C].Yokosuka:Port and Harbour Research Institute,1994.458-468.

刘颖,谢世楞.关于直立式防波堤分项系数的确定[J].港工技术,1993,(4):11-17.

BENASSAI E,CALABRESE M,UBERTI G,et al.Reliability analysis of existing breakwaters [A].Proceedings of the Tenth International Offshore and Polar Engineering Conference [C].Seattle:The International Offshore and Polar Engineers,2000.568-575.

BALAS C E,KOC L.Risk assessment of vertical breakwaters a case study in Turkey[J].China Ocean Engineering,2002,16 (1):123-134.

赵国藩,金伟良,贡金鑫.结构可靠度理论[M].北京:中国建筑工业出版社,2000.

刘颖,谢世楞.直立堤工程的可靠指标核算[J].港工技术,1990,(4):1-5.

JTJ213-98,海港水文规范[S].

施引文献

资源附件(0)

访问统计