水道港口2024，Vol.45Issue(1)：100-106,7.
寒区码头沉箱盖板裂缝成因分析与数模计算验证
Cause analysis and numerical simulation verification of cracks in the cover plate of dock caissons in cold regions
摘要
Abstract
In 2021,when testing the 300 thousand ton crude oil terminal in Xianren Island,vertical cracks were found on the hollow cover plate above the caisson.According to the testing results,construction records,temperature during construction,cracking time,crack characteristics,structural characteristics of cracks,and investigation results of sea ice conditions in the project area,it was concluded that the cracks in the hollow cover plate,cast-in-situ superstructure,and caisson top were caused by the expansion of ice in the hollow cover plate.The finite element simulation model was used to verify the cause of cracking.The stress and strain effects of four working conditions,namely mooring force,overall temperature change and volume expansion caused by sea ice,on the structure were simulated.The results showed that very small volume expansion of ice would cause a large tensile stress on the side wall of the cover plate and lead to structural cracking.The high stress area was basically consistent with the actual crack area.From this analysis,it is known that the expansion of sea ice is the main reason for the side cracks of the hollow cover plate.关键词
沉箱盖板/竖向裂缝/海冰膨胀/冻胀力Key words
caisson cover plate/vertical crack/sea ice expansion/frost heaving pressure分类
交通工程引用本文复制引用
朱鹏瑞,李越松,尹纪龙,孙熙平,王亚民,薛润泽..寒区码头沉箱盖板裂缝成因分析与数模计算验证[J].水道港口,2024,45(1):100-106,7.基金项目
国家重点研发计划项目(2022YFB2603000) （2022YFB2603000）
浙江省科技项目(2022C01004) （2022C01004）
中央级公益性科研院所基本科研业务费项目(TKS20230104) （TKS20230104）
