【作者】 王淑云； 王丽； 鲁晓兵；

【Author】 WANG Shu-yun,WANG Li,LU Xiao-bing (Institute of Mechanics,Chinese Academy of Sciences,Beijing 100080,China)

【机构】 中国科学院力学研究所；

【摘要】 通过ABAQUS有限元程序,采用Mohr-Columbde土本构模型,并根据天然气水合物沉积物层分解前后和其上覆土层的物性和强度参数,对海底管道和其附近的应力和位移场进行了计算,对天然气水合物分解对海底管道的稳定性影响进行了分析。更多还原

【Abstract】 By making use of ABAQUS finite element program,applying Mohr-Columb constitute model to the seabed soil and based on the physical and strength parameters of overburden soil and sediment containing natural gas hydrate before and after the natural gas hydrate dissociation,the stress and displacement distributions of pipe and sediment near the pipe are caculated.The effects of natural gas hydrate dissociation on the stability of pipe are analyzed.更多还原