Physical Simulated Experimental Study Of Ice Force On Hydraulic Structures Of Wharf

With increasing development of transportation on the sea , offshore fishery and oil-gas resources, hydraulic structures of wharf have become basal facilities of these resources exploitation, they not only withstand actions of wind, wave, ocean current and tide and so on, but also meet with the presence of sea ice. Human being pays more and more attention to the question which sea ice acts on hydraulic structures of wharf. However, due to complexity of sea ice question, at present accredited mathematics-physics model which describes theoretics mechanism of action of sea ice with hydraulic structures of wharf has not been developed. Field investigation is considered as the most efective method to obtain first-hand materials, but it is dificult to measure directly because of the high expense, complicated conditions and execrable environment. Therefore, the main work of this paper is to study the interaction mechanism between ice and structures by applying physical model experiment on this condition of offering design basis.At first, the paper introduces relative test system and experimental technology, and measures relative technical parameter. Based on these, three-aspect physical simulated experiments are conducted. Firstly, shielding factors between row-shelves are analysed ulteriorly, at the same time phenomena of ice broken, pile-up between piles are observed, non-simultaneous failure of ice sheet interaction with the bridge support structure is studied, and non-simulations failure coefficient is given. Secondly, model tests of cone structure for ice breaking with five tangent angles (45°, 50°, 55°, 60°, 65°) are done, the action-mechanism is analysed, ice broken and pile-up in the front of conical ice breaking structure are observed, ice forces are given. Finally model tests which ice sheets interact on the slope-bank structure are presented, ice forces on the structure are measured, phenomena of ice broken, pile-up and slope-bank destruction at the bottom of slope-bank structure are recorded by the CCD video cinema.