摘要
对反拱水垫塘的单底板块振动进行了理论分析,提出了单底板块自由振动的最大位移公式、底板块振动分区及近壁流场的划分依据;得出反拱水垫塘底板块动力特性优于平底板块;得到反拱水垫塘单底板块振动位移的特性及特征量的沿程分布规律,提出单底板块振动沿程分为强振区和弱振区,对反拱水垫塘破坏机理的研究具有重要意义。
By making theoretical analysis of the vibration characteristics of a slab set in arch ring, a formula on its maximum free displacement, a division of slab vibration and a subdivide of flow field near the wall are proposed. Equations of dynamics of a slab installed in both types of cushion pool are analyzed and compared to arrive a conclusion that dynamic properties of slab in the in- verted arch ring is superior to those of the flat bottom. Study on the vibration displacement of a single slab set in a inverted arch ring is carried out to propose a division of vibration along water flowing, that is, three strong vibration areas and two weak ones, and give the vibration proper ties and the distribution laws of characteristic variables, which will be very significant for research on the unstability mechanism of inverted arch slab.
出处
《西安理工大学学报》
CAS
2006年第1期24-28,共5页
Journal of Xi'an University of Technology
基金
国家自然科学基金资助项目(50279040)
关键词
反拱水垫塘
底板块振动
特征量
inverted-arch pool
slab vibration
characteristic variables
