- 摘 要
-
（湖南大學(xué)土木工程學(xué)院鋼結(jié)構(gòu)研究所，長沙 410082）
［摘要］對平面K形管板節(jié)點(diǎn)的抗彎剛度進(jìn)行了有限元分析研究。利用參數(shù)分析法，重點(diǎn)考察了主管直徑D、支主管夾角θ、主管徑厚比γ、支主管直徑比β、節(jié)點(diǎn)板厚與主管壁厚比τp、支主管壁厚比τw、支管插入板的長度與支管直徑比ν等幾何參數(shù)，以及主管與支管的軸向應(yīng)力對節(jié)點(diǎn)抗彎剛度的影響。研究表明：主管與支管的相對幾何關(guān)系以及軸向應(yīng)力對平面K形管板節(jié)點(diǎn)抗彎剛度均產(chǎn)生影響。在大量有限元算例的基礎(chǔ)上，采用回歸分析得出了K形管板節(jié)點(diǎn)的抗彎剛度計(jì)算公式。
［關(guān)鍵詞］K形管板節(jié)點(diǎn)；抗彎剛度；非線性有限元分析；回歸公式
中圖分類號：TU391-3，TU392-3文獻(xiàn)標(biāo)識(shí)碼：A文章編號：1002-848X(2012)02-0093-05
Research on-the bending rigidity of gusset plate of-tube-gusset K-joints
Shu Xingping，Peng Huanjia，Yao Yao（Steel Structural Institute of Civil Engineering College, Hunan University, Changsha 410082, China）
Abstract:Finite-element analysis on the bending rigidity of gusset plate of –tube-gusset K-joints were carried out-which put emphases on the influence of joints geometric parameters D (the main tube diameter), θ(the angle between the branch tube and the main tube), γ (the diameter-thickness ratio of the main tube), β (the diameter ratio of the branch tube to the main tube), τp (the thickness ratio of the gusset plate to the main tube), τw (the thickness ratio of the branch tube to the main tube), ν(the ratio of the depth of the-gusset plate to the diameter of the branch tube) and the axial stress of the main tube and the branch tube on the bending rigidity of joints. The research shows that the relative geometric parameters and the axial stress of the branch tube and the main tube have an effect upon the bending rigidity of gusset plate of tube-gusset K-joints. Based on a large number of finite-element computations, regression formula of the bending rigidity of gusset plate of tube-gusset K-joints were proposed.
Keywords:tube-gusset K-joint; bending rigidity; nonlinear finite-element analysis; regression formula
*國家自然科學(xué)基金項(xiàng)目（50978089，50748029）,湖南省自然科學(xué)基金重點(diǎn)項(xiàng)目(09JJ3102),國家“985”資助項(xiàng)目。
作者簡介：舒興平，博士，教授，博士生導(dǎo)師，一級注冊結(jié)構(gòu)工程師，Email：shuxingping@sina.com。
參考文獻(xiàn)
［1］舒興平,丁兆龍,陳方紅，等.管板連接軸心受拉構(gòu)件極限承載力試驗(yàn)研究［J］.建筑結(jié)構(gòu)學(xué)報(bào),2007, 28(5):6168.
［2］王偉,陳以一.圓鋼管相貫節(jié)點(diǎn)局部剛度的參數(shù)公式［J］.同濟(jì)大學(xué)學(xué)報(bào),2003,31(5):515-519.
［3］王偉,陳以一.圓鋼管相貫節(jié)點(diǎn)的非剛性能與計(jì)算公式［J］.工業(yè)建筑,2005,35(11):5-9.
［4］FESSLER H,MOCKFORD P B,WEBSTER J J,et al. Parametric equations for the flexibility matrices of single brace tubular joints in offshore structures［C］//Proceedings of the Institution of Civil Engineers,1986,81(12):675-696.
［5］DET NORSKE VERITAS. Rules for the design［S］. Oslo: Det Norske Veritas,1977:104-105.
［6］EFTHYMIOU. Local rotational stiffness of unstiffened tubular joints［C］//KSEPL Report RKER,1985,32(5): 122-134.
［7］陳以一,王偉,趙憲忠,等.圓鋼管相貫節(jié)點(diǎn)抗彎剛度和承載力實(shí)驗(yàn)［J］.建筑結(jié)構(gòu)學(xué)報(bào),2001,22(6):25-30.
［8］夏志斌,姚諫.鋼結(jié)構(gòu)［M］.杭州:浙江大學(xué)出版社,1996:429-438.
［9］郭健,孫炳楠,葉尹.高聳鋼管塔的節(jié)點(diǎn)應(yīng)力分析［J］.鋼結(jié)構(gòu),2002,17(6):63-65.
［10］陳以一,彭禮.矩形鋼管貫通式節(jié)點(diǎn)抗彎性能研究［J］.建筑結(jié)構(gòu)學(xué)報(bào),2004,25(3):1-7.
- 下載地址
-
