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X型系混凝土块软体排(以下简称X型排)是目前长江中下游应用最为广泛的一种护滩建筑物.由于X型排结构复杂,影响排体水毁的不确定因素较多,目前对于X型排水毁程度及结构失效的判别多采用定性分析,缺乏量化分析方法以及评价其水毁失效的指标.针对X型排护滩特性和结构特征,将排体水毁面积作为衡量X型排破坏程度的依据,通过物理模型试验,得到各外界因素与排体水毁面积间的关系.研究结果表明:X型排水毁程度主要与3个无量纲量有关,分别是弗汝德数Fr、边滩阻水宽度Sw和淹没状态下滩上相对水深Rd.建立X型排水毁面积方程,预测排体的水毁程度及整治效果,并通过实例进行验证.
X-type concrete block soft row (hereinafter referred to as X-type row) is the most widely used in the middle and lower reaches of the Yangtze River a beach building.Because the X-type row structure is complex, the impact of body displacement damage more uncertainties, at present X-type drainage damage and structural failure to determine the extent of the use of qualitative analysis, the lack of quantitative analysis methods and evaluation of the indicators of water damage failure.According to the characteristics and structural characteristics of the X-shaped drainage beach, the drainage area destroyed as a measure of X-type The relationship between the external factors and the area of the surface of the body is obtained through the physical model test.The results show that the degree of the destruction of the body X is mainly related to the three dimensionless quantities, namely the Froude number Fr , The water blocking width Sw at the beach and the relative water depth at the beach in submerged state Rd. The X-type drainage destroyed area equation was established, the degree of water damage of the drainage body and the remediation effect were predicted, and verified by examples.