管节点冲剪校核影响因素分析

Analysis of Influence Factors of Punching and Shearing Check of Tubular Joints

用于海洋石油平台结构管节点冲剪校核的结构计算软件SACS,是依据不同版本API PR 2A《Recommended Practice for Planning,Designing and Constructing Fixed Offshore Platforms—Working Stress Design》编制而成的。但当管节点冲剪校核计算结果超出API PR 2A范围时如何调整,弦杆和撑杆的管径、壁厚及荷载与计算结果间的关系,SACS软件和API PR 2A中均未做明确说明。介绍了管节点冲剪校核基本原理,基于API PR 2A—2014,分析了撑杆壁厚、撑杆直径、弦杆壁厚、弦杆直径、荷载等因素对T/Y型管节点Strength UC和Load UC冲剪校核结果的影响。

The structure calculation software SACS,used for checking the punching and shearing of tubular joints of offshore oil platform structures,was compiled according to different versions of codes API PR 2A“Recommended Practice for Planning,Designing and Constructing Fixed Offshore Platforms—Working Stress Design”.When the calculation result of the punching and shearing check of the tubular joints exceeds the API PR 2A range,how to adjust the relationship between the pipe diameter,wall thickness,and the load of the chord and brace and the calculation result,in the SACS software and API PR 2A,there is no clear description.The basic principles of punching and shearing check of tubular joints was introduced.Based on API PR 2A—2014,the influence of brace wall thickness,brace diameter,chord wall thickness,chord diameter,load and other factors on the punching and shearing check results of Strength UC and Load UC of T/Y pipe joints were analyzed.