梁腹板开圆孔节点的分析模型_李波.pdfVIP

33 4 Vol. 33 No. 4 2009 8 JOURNAL OF BEIJING JIAOT ONG UNIVERSITY Aug. 2009 : 1673-0291( 2009) 04-0 10 1-05 李 波, 杨庆山 ( , 100044) : 在距柱表面 一定距离的梁腹板上开设 一定大小的孔洞是改善钢框架结 抗震性能的一种 有效手段, 文中结合试验结果提出了梁腹板开圆孔节点的分析模型. 为了能够在结 的弹塑性分析 中考虑梁腹板开圆孔节点的影响, 除在梁端柱端设置塑性铰外, 还应在腹板孔削弱处增设塑性铰. 新增塑性铰位于腹板削弱区域最危险截面处, 其弯矩- 转角关系与普通实腹式钢梁 一致, 仅屈服点 存在 一定的差异. 利用该模型对梁腹板开圆孔节点的拟静力试验及含梁腹板开圆孔的钢框架抗震 性能试验进行了模拟, 其结果能满足工程要求. : 钢框架; 梁柱节点; 弹塑性; 分析模型; 试验验证 : TU 973. 13 : A Analysis Model of Beam- to- Column Connection with Opening in Beam Web L I Bo, YA N G Qing sha n ( School of Civil Engin ring , B ijing Jiaotong Univ rsity , B ijing 100044, China) Abstract : Op ning in b am w b is an ff ctiv m thod to improv th s ismic b havior of st l mom nt r sisting fram ( MRF) , and th non- lin ar analysis mod l of th b am- to- column conn ction w ith op ning in b am w b ( OBW) is provid d bas d on t st r sults. Th op ning in b am w b can b simu- lat d by a plastic hing locat d on b am w ith 0145R aw ay from th op ning c nt r ( R is op ning ra- dius) , and th load- d formation curv of th plastic hing is th sam as st l b am only w ith som diff r nc in yi lding loads. Compar d w ith t st r sults, num rical analysis using th non- lin ar mod- l of th OBW conn ction can off r th s ismic r spons s and failur mod of st l mom nt fram . Key words: st l mom nt r sisting fram ; b am- to- column conn ction; non- lin ar; analysis mod- l; xp rim nt v rification [ 1] [ 2] [ 1] . . , , , , , ( Vi r nd l M ch- . anism) , , , , , . , , , .