内置加劲环T型管节点抗冲击承载力计算  

Calculation of Impact Resistance of Tubular T-joints with Inner-stiffened Ring

作　　者：曲慧[1] 李志超 李亚锦 刘启晨 QU Hui;LI Zhi-chao;LI Ya-jin;LIU Qi-chen(School of Civil Engineering,Yantai University,Yantai 264005,China;International Campus,Zhejiang University,Haining 314400,China)

机构地区：[1]烟台大学土木工程学院,山东烟台264005 [2]浙江大学国际联合学院,浙江海宁314400

出　　处：《烟台大学学报（自然科学与工程版）》2021年第1期78-86,共9页Journal of Yantai University(Natural Science and Engineering Edition)

基　　金：国家自然科学基金资助项目(51478407);山东省自然科学基金资助项目(ZR2020ME238);烟台市科技创新发展计划项目(2020XDRH104)。

摘　　要：服役中的钢管结构遭受碰撞后,其节点可能因受到冲击荷载而破坏,严重时甚至会引起结构坍塌,因此确定冲击荷载作用下节点的抗冲击承载力是进行结构动力设计和评价结构安全性的重要内容。本文采用有限元分析软件ABAQUS对动力荷载作用下的内置加劲环T型管节点进行参数分析,分别分析各个参数对T型节点支管管顶位移的影响关系曲线。在此基础上运用拟合软件1stopt对位移与各个参数之间的关系计算公式进行拟合,在验证公式可靠的基础上结合文献拟合出内置加劲环T型管节点抗冲击承载能力公式,并对公式的可靠性和适用性进行验证。验证结果表明本文的T型管节点抗冲击承载力计算公式具有可靠性,对实际工程具有一定的指导作用。When the steel tube structure in service is subjected to collision,its joints may be damaged by the impact load,causing even structural collapse in severe cases.Therefore,it is important to determine the impact-bearing capacity of the joints under the impact load for structural dynamic design and evaluation of structural safety.In this paper,the finite element analysis software ABAQUS is used to analyze the parameters of the T-joint with inner-stiffened ring under dynamic load,and to analyze the effect of each parameter on the displacement of the top surface of branch of the T-joint.Based on this,the fitting software 1stopt is used to calculate the fitting equation between each parameter and the displacement.Once the equation is verified to be reliable,it can be used combined with the literature to calculate the fitting equation of impact bearing capacity(impact resistance)equation of inner ring-stiffened tubular T-joint,and verify the reliability and applicability of the equation.Results show that impact bearing capacity equation of tubular T-joint is reliable and can provide guidance to practical projects.

关 键 词：内置加劲环 T型管节点 抗冲击承载力 动力荷载 简化计算公式 

分 类 号：TU392.3[建筑科学—结构工程]