卷波式弧形台阶海岸防浪墙

CURVED AND STEPPED SEAWALL WITH CURLY WAVE EFFECT

海岸线整治工程固然需要修筑防波护岸堤防，而滨海城市开发滩地也多结合交通旅游，建设体现海滨特色、可供观赏海景的滨海大道。故尝试采用既能适应多级潮位的波浪回卷，又能增强墙体稳定性，体形新颖的弧形台阶海岸防浪墙。本文联系广东省湛江市海岸线整治工程已建成的滨海大堤实例①，表述此种荟萃海塘、挡潮、防浪、土地开发、交通、旅游多功能的防浪墙设计的基本点，透过波浪模型试验，探求在各级风浪作用下，不同的潮水位、波高、波周期组合条件时，弧形台阶式防浪墙前回卷波浪的性能、波态、波压力及浮托力的变化规律，进而确定两级台阶弧形组合防浪墙的体形。

Shore line regulating works need protective seawalls while the development in the beach area of coastal cities generally combines transportation and travelling Services with the Construction of Seawall which could feature the sea shore and offer scenic spots. Therefore, a new form of curved and stepped seawall, which can not only suit to the curly return waves with different scales of tidal water level but also reinforce the stability of the structure itself, is tried. This paper takes the seawall of shore line regulating works in Zhanjiang city of Guangdong province as an example. It describes the design basis of the multifunctional seawall which is used as a dike,tide and wave protection, land development, transportation and travelling. The wave model test is applied to find out the variation regularity of the behaviour, pattern,pressure of the curly return waves in front of the curved and stepped seawall as well as its uplift pressure under the action of different scales of tide waves wity different tidal levels, wave lengths and cycles.Eventually, the seawall pattern with two steps and curved form is adopted.