基于热点应力法的KT型管节点环内加强效果分析  

Analysis of the strengthening effect of internally ring-stiffened tubular KT-joints based on hot spot stress method

作　　者：李相国 张淑华[1] 王文华 端传捷 陈福茂 LI Xiang-guo;ZHANG Shu-hua;WANG Wen-hua;DUAN Chuan-jie;CHEN Fu-mao(College of Harbor,Costal and Offshore Engineering,Hohai University,Nanjing,Jiangsu 210098,China)

机构地区：[1]河海大学港口海岸与近海工程学院

出　　处：《中国港湾建设》2019年第11期6-10,共5页China Harbour Engineering

基　　金：中央高校基本科研业务费(学生项目)(2019B60914);江苏省研究生科研与实践创新计划项目(SJKY19_0510)

摘　　要：当KT型管节点采用内部加强方式时,为研究加强环参数对加强效果的影响,通过ABAQUS软件建立KT型管节点模型进行数值分析,将计算得到的SCF数值与文献计算结果进行对比,验证了数值模型的准确性。变换加强环参数η和tr得到加强参数对加强效果的影响规律。根据轴力作用下KT型管节点SCF的分布规律,环内加强可以使KT型管节点SCF的分布曲线趋于均匀。对于KT型管节点环内加强来说,加强的效果不是线性的增长,加强环的尺寸不是越大越可取。When the KT-joints adopt the internal strengthening method,in order to study the influence of strengthening parameters on the reinforcement effect of internally ring-stiffened tubular KT-joints,the KT-joints model was established by ABAQUS for numerical analysis.The calculated SCF value is compared with the literature calculation results which shows the numerical model is reliable.The law of different stiffening ring’s parameters which have influence on simulation results by selecting differentηand tr.According to the distribution law of SCF of tubular KT-joints under axial force,the distribution curve of SCF tends to be uniform by internal ring-stiffeners.For internally ring-stiffened tubular KT-joints,the strengthening effect is not linear growth,so the larger the size of the strengthening ring is not desirable.

关 键 词：KT型管节点 应力集中系数 热点应力 环内加强 数值分析 

分 类 号：U654[交通运输工程—港口、海岸及近海工程] TU392.3[交通运输工程—船舶与海洋工程]