钢筋石笼的空隙率对其稳定特性的影响

Influence of Void Ratio on the Stability Characteristics of Reinforced Gabion

钢筋石笼是截流、堵口和护岸工程中常用的一种人工材料,探索钢筋石笼的稳定性机理对指导其合理应用具有重要的意义。为研究空隙率对钢筋石笼稳定性的影响,针对不同形状及不同空隙率的钢筋石笼进行了起动试验,拟合提出了考虑其空隙率的钢筋石笼起动流速公式,对块体抗冲流速经典公式进行了补充和完善。研究表明:在其它影响因素相同的情况下,钢筋石笼的空隙率越大越稳定,且不同形状的钢筋石笼的稳定性有所不同。最终得到了包含大小、密度、形状、相对粗糙度等因子的钢筋石笼起动流速计算公式,经试验验证该公式具有较好的计算精度。

Reinforced gabion is a man-made material commonly used in closure, blocking and revetment projects. Exploring its stability mechanism is of vital significance to guiding its application. In this research, tests on the in-cipient motion of reinforced gabion of different shapes and void ratios were performed. Results suggest that given the same other influential factors, larger void ratio leads to better stability. The stability of reinforced gabions varies with different shapes. A formula of the incipient velocity of reinforced gabion in consideration of void ratio, size, densi-ty , shape, relative roughness and other factors was proposed to supplement and improve the classic formula, and is verified to be of good accuracy.