Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Pier local scouring protection device with rotary normal curved surface
The invention discloses a pier local scouring protection device with a rotary normal curved surface. The protection device is sleeved on a pier and is approximately in a bell shape, the thickness of the protection device is 0.5-1 m, and the inner surface of the protection device meets an equation of a standard rotary normal curved surface. The protection device is combined with the reciprocating flow characteristic, front impact water flow can be dispersed, the protection device is lifted away from the periphery of the pier in the tangential direction of a convex surface, and water flow impactis reduced; on the other hand, downward scouring water flow can be guided, downward scouring continues to be carried out, the direct scouring effect of the downward scouring water flow on a bed surface is weakened at the position farther away from the pier along the concave surface, and part of front impact water flow can be counteracted; and meanwhile, horseshoe vortexes around the pier are reduced, scouring of the horseshoe vortexes to a pier riverbed is weakened, and meanwhile the stress influence on the pier is small.
本发明公开一种旋转正态曲面的桥墩局部冲刷防护装置，该防护装置套设在桥墩上，形状近似钟形，防护装置的厚度为0.5～1m，且其内表面满足标准旋转正态曲面的方程。该防护装置结合往复流特性，可以分散正面冲击水流，形成沿凸形面切线方向挑离桥墩周围，减小水流冲击；另一方面可以起到对下冲水流进行导流，继续下冲沿凹形面挑向桥墩的更远处削弱下冲水流对床面的直接冲刷作用，还可以抵消部分正面冲击水流的作用；同时消减桥墩周围马蹄涡，减弱其对于桥墩河床的冲刷，同时对桥墩受力影响较小。
Pier local scouring protection device with rotary normal curved surface
The invention discloses a pier local scouring protection device with a rotary normal curved surface. The protection device is sleeved on a pier and is approximately in a bell shape, the thickness of the protection device is 0.5-1 m, and the inner surface of the protection device meets an equation of a standard rotary normal curved surface. The protection device is combined with the reciprocating flow characteristic, front impact water flow can be dispersed, the protection device is lifted away from the periphery of the pier in the tangential direction of a convex surface, and water flow impactis reduced; on the other hand, downward scouring water flow can be guided, downward scouring continues to be carried out, the direct scouring effect of the downward scouring water flow on a bed surface is weakened at the position farther away from the pier along the concave surface, and part of front impact water flow can be counteracted; and meanwhile, horseshoe vortexes around the pier are reduced, scouring of the horseshoe vortexes to a pier riverbed is weakened, and meanwhile the stress influence on the pier is small.
本发明公开一种旋转正态曲面的桥墩局部冲刷防护装置，该防护装置套设在桥墩上，形状近似钟形，防护装置的厚度为0.5～1m，且其内表面满足标准旋转正态曲面的方程。该防护装置结合往复流特性，可以分散正面冲击水流，形成沿凸形面切线方向挑离桥墩周围，减小水流冲击；另一方面可以起到对下冲水流进行导流，继续下冲沿凹形面挑向桥墩的更远处削弱下冲水流对床面的直接冲刷作用，还可以抵消部分正面冲击水流的作用；同时消减桥墩周围马蹄涡，减弱其对于桥墩河床的冲刷，同时对桥墩受力影响较小。
Pier local scouring protection device with rotary normal curved surface
一种旋转正态曲面的桥墩局部冲刷防护装置
SUN ZHILIN (Autor:in) / DONG HAIYANG (Autor:in) / CHEN FANJUN (Autor:in)
01.01.2021
Patent
Elektronische Ressource
Chinesisch
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