CAJ | 학술논문

通过局部动床概化水槽试验，采用MicroADV流速仪测量瞬时流速，得到浮运围堰下沉过程中围堰侧面纵向、横向和垂向紊动强度的分布情况。分析浮运围堰入水深度、行进流速、行进水深对紊流宽度的影响。结果表明：在试验条件下，浮运围堰入水深度对紊流宽度影响较大；行进流速、行进水深对紊流宽度影响较小。在试验范围内，围堰单独作用时水流相对紊流影响宽度D/B随围堰相对入水深度Hc/H0的增加而增大，基本为线性关系。
통과국부동상개화수조시험，채용MicroADV류속의측량순시류속，득도부운위언하침과정중위언측면종향、횡향화수향문동강도적분포정황。분석부운위언입수심도、행진류속、행진수심대문류관도적영향。결과표명：재시험조건하，부운위언입수심도대문류관도영향교대；행진류속、행진수심대문류관도영향교소。재시험범위내，위언단독작용시수류상대문류영향관도D/B수위언상대입수심도Hc/H0적증가이증대，기본위선성관계。
Based on the local movable bed conceptual flume tests, the longitudinal, transverse and vertical turbulent intensity distribution near the float cofferdam’s side during descending is presented using a Micro Acoustic-Doppler Velocimeter (MicroADV) to measure the instantaneous velocity. The turbulent width influenced by the changing of cofferdam subsidence depth, approaching flow velocity, upper flow depth is researched. The result shows that under the experimental conditions, the turbulent width influenced by the floating cofferdam subsidence depth is conspicuous, and by the approaching flow velocity, the upper flow depth is small relatively. In the experiment range, the relative turbulent width of D/B is increased with the floating cofferdam into relatively water depth Hc/H0 when the floating cofferdam acts alone. They are substantially linear relationship.