海港码头氯离子侵蚀环向分布规律研究  

Circumferential distribution of chloride penetration of seaport wharf

作　　者：李志远[1] 王毅[1] 金伟良[1] 

机构地区：[1]浙江大学土木工程学系,浙江杭州310058

出　　处：《水运工程》2012年第8期82-87,共6页Port & Waterway Engineering

基　　金：国家自然科学基金重大国际合作与交流项目(50920105806);国家科技部国际科技合作项目(2010DFA24590);交通运输部西部交通建设科技项目(20113288061110)

摘　　要：对乍浦港圆形混凝土柱进行取粉检测,研究氯离子侵蚀的环向变异性。根据乍浦港的风况、波况,计算圆形截面混凝土柱在各个方位的累积风速、累积风压和波浪压强的环向分布。并通过灰关联分析得到了累积风速、累积风压和波浪压强与表面氯离子浓度、扩散系数之间的关联度。累积风压由于考虑了贝努利效应,比累积风速更能反映真实情况。为建立海港码头相似理论及耐久性评估体系提供依据。The circumferential variability of chloride penetration is analyzed based on the powder inspection collected from circular concrete column in Zhapu port.Then,the cumulative wind velocity,the cumulative wind pressure and wave pressure circumferential distribution at each direction of the circular concrete column are calculated according to the wind regime and wave conditions of Zhapu port.Also,using a grey analysis method,the correlations among the cumulative wind velocity,the cumulative wind pressure,the wave pressure and the surface chloride content,as well as the chloride diffusion coefficient are obtained.Finally,the research highlights the cumulative wind pressure which considers the Bernoulli effect and reflects a much real situation than cumulative wind velocity.The result of this research has a significant contribution to the similarity theory and durability evaluation system of seaport wharf.

关 键 词：混凝土结构 干湿交替 灰色理论 相似理论 

分 类 号：TU375[建筑科学—结构工程]