潮汐影响下的海堤渗流场－应力场耦合分析

摘要

为掌握潮汐快速变化作用下的海堤渗流规律，结合实测信息，利用ANSYS参数化编程语言对海堤进行渗流场－应力场耦合模拟分析，研究主要参数对海堤两场耦合效果的影响，分析潮位在快速涨落时堤内自由水面的变化特点，揭示海堤渗流量随潮位变化的规律。结果表明：在考虑海堤渗流场－应力场耦合作用时，渗压、渗流量随潮位的涨落呈周期性变化，且具有一定的滞后性；渗透系数及耦合系数对海堤耦合场模拟效果影响显著；堤内渗流自由水面受潮位的影响，变化相对迟缓。%In order to further grasp the special regularities of seawall seepage flow under the action of rapidly changing tide level,the seepage field-stress field coupling simulation analysis of seawall was carried out combining with measured information and using ANSYS parametric programming language;the influence of major parameters on the seawall coupling effects was studied;changing characteristics of the free sur-face when tide level rapidly changes was researched and the rules of seepage flow changing with tide level was revealed. The results indicate that the osmotic pressure and seepage flow change periodically along with the tide level fluctuations and have certain hysteresis quality when considering the seawall seepage field-stress field coupling;coefficient of permeability and coupling coefficient have significant effects on sea-wall coupling field simulation;the seepage free surface of seawall is affected by cyclical tide level and its change is relatively slow.