锥体上冰力的试验研究  

Experimental study of ice force on conical structure

作　　者：史庆增[1] 刘波[1] 李勇[1] 宋安[1] 

机构地区：[1]天津大学建筑工程学院

出　　处：《中国海上油气（工程）》2005年第2期118-123,共6页China Offshore Oil and Gas

基　　金：国家自然科学基金资助项目(50179022)部分研究成果。

摘　　要：通过冰力模型试验,研究了锥体冰力的特征。试验得到的正锥体冰力大都小于美国API荐用Ralston公式计算的冰力,Ralston公式未反映冰速对冰力的影响;多锥体前冰的非同时破坏现象以及锥间距对冰力计算具有不同程度的影响;冰在正、倒锥体交界线上的破坏为挤压破坏,其冰力远小于作用在同直径桩柱上的冰力。In this paper, the characteristics of ice force on conical structure has been studied by model tests. The test data of ice force on upward bending cone are mostly greater compared with the results calculated by Ralston formula recommended by American API, because Ralston formula does not consider the effect of ice velocity on the ice force. The non-simultaneous failure of ice on double-cone structure and the space between cones influences the calculation of ice force. The ice failure mode on the interface of upward and downward bending cones has been proved to be crushing and the ice force acted on the interface is much less than that acted on the pile with same diameters.

关 键 词：锥体 试验研究 冰力模型试验 公式计算 破坏现象 挤压破坏 API 

分 类 号：TP317.3[自动化与计算机技术—计算机软件与理论] TG826[自动化与计算机技术—计算机科学与技术]