Optimum Geometry and Recreational Function of Promenade Mild Slope Seawalls
|Keywords:||親水性緩坡海堤;海堤面坡;水理特性;建造成本;休憩功能;Promenade Mild Slope Seawalls;Face Slope of Seawalls;Hydrodynamic Property;Construction Cost;Recreational Function|
A mild slope seawall with optimum geometry and multi-recreational functions was suggested to have economic and efficient face slope in this study. The hydrodynamic properties and construction cost ware examined to choose a suitable face slope. The preferred recreational activities and their corresponding to facilities were selected by using questionnaire investigation. From reviewing the previous literatures about hydrodynamic properties of waves on sloping seawalls, we found that a seawall with milder face slope can reduce more wave reflection coefficient, run-up, and overtopping than a traditional seawall with steep face slope. However, more construction cost will be paid for milder sloping seawalls than traditional seawalls under the consideration of the same construction conditions. The economically accepted face slope of seawalls was suggested to be cota=5~6 (bevel angle a) by balancing the increasing rate of construction cost and the reducing rate of hydrodynamic properties. The questionnaire investigation was carried out in His Chu area to indicate the public recreational activities in the beach and requested facilities for the people in Taiwan. The results show that the people in Taiwan are inclined to leisure activities, such as walking, coastalscape looking, but not to sport activities, like riding marine motors et al.. Therefore, some requested recreational facilities, such as chairs, plateform for sitting and corresponding to recreational activities are proposed on different mildly sloping seawalls. In the near future, mild slope seawalls will be built in Taiwan because of the increasing need of the people. The present results will provide a good ready reference for future constructing mild slope seawalls.
|Appears in Collections:||Thesis|