科伦坡港口城外防波堤堤顶高程的确定  

Determination of top elevation for Colombo port city off-breakwater

作　　者：李春潮[1,2] 曾南海 刘东征[2] 

机构地区：[1]中国港湾工程有限责任公司,北京100027 [2]中交天津航道局有限公司,天津300461

出　　处：《水运工程》2015年第9期94-98,共5页Port & Waterway Engineering

摘　　要：在地质条件及防波堤断面形式基本确定的前提下,防波堤堤顶高程是决定防波堤造价的主要因素之一。分析特许协议文件中外防波堤相关要求并考虑景观要求,认为堤顶高程应在3.0~4.0 m;分析工程所在区的自然条件及设计要素,确定防波堤的结构形式;在允许越浪的条件下,计算堤顶高程的范围;通过防波堤护面块体稳定性二维物理模型及波浪泥沙整体物理模型试验来验证护面块体稳定性和人工沙滩冲淤变化,并测量堤后不同位置处的绕射或越浪引起的次生波高;根据工程量及施工工艺选定较优的高程方案,为工程设计提供参考。The top elevation of breakwater is one of the main factors of breakwater construction cost under certain geologic condition and breakwater cross section type. Analyzing the Concession Agreement and Employer＇s Requirements for the breakwater, and considering the landscape requirements, we determine that the breakwater top elevation shall be between 3. 0 -4. 0 m; Analyzing the natural conditions and design elements of the engineering area, we determine the structural type of the breakwater; Under the allowable wave overtopping, we calculate the the scope of breakwater＇s top elevation; By 2-D stability physical model tests and 3-D physical model test, we verify the stability of armor blocks and the artificial beach＇s sediment change, and measure the wave height after the breakwater caused by different locations of diffraction wave or secondary wave height; Comparing the construction quantities and construction technology, we select the optimal elevation, which may serve as reference for the engineering design.

关 键 词：防波堤 堤顶高程 模型试验 

分 类 号：U656.2[交通运输工程—港口、海岸及近海工程]