剪切連接件分段布置時組合梁滑移計算*
王鵬，周東華，王永慧，王輝濤
- 摘 要
-
（昆明理工大學建筑工程學院，昆明 650224)［摘要］為了盡量減小組合梁界面滑移，提出在不增加剪切連接件數(shù)量的情況下，剪切連接件采用分段均勻布置方式?；趶椥岳碚摰姆治龇椒?，分段建立組合梁單元體力學模型，推導了組合梁界面滑移的計算公式，并得出了工程中常見4種荷載作用下，剪切連接件分段均勻布置時簡支組合梁界面滑移的解析解。通過實例對連接件均勻和分段布置2種情況下組合梁滑移進行了對比計算分析。結果表明，連接件分段布置方法可有效減小組合梁界面滑移，從而減小由于滑移引起的組合梁附加撓度和混凝土板的裂縫，提高結構的耐久性。［關鍵詞］組合梁；剪切連接件；分段均勻布置；界面滑移；解析解中圖分類號：TU398,TU317文獻標識碼：A文章編號：1002-848X(2011)08-0096-06Calculation on slip of composite beams with stepwise uniform distribution of shear connectorsWang Peng, Zhou Donghua, Wang Yonghui, Wang Huitao(Faculty of Engineering & Architecture, Kunming University of Science and Technology, Kunming 650224, China)Abstract:In order to minimize the interfacial slips of composite beams, a shear connector layout with stepwise distribution and without increasing the number of shear connectors was presented Based on the elastic analysis of composite beams, the mechanical model of composite beam micro-element was constructed and the formula to calculate the characteristics of interfacial slips was obtained The analytic solution of the interfacial slips for composite beams with stepwise distributed connectors was deduced under the common four kinds of loads in the practical engineering projects The interfacial slips for composite beams were calculated and compared respectively with uniformly and stepwise distributed connectors The results reveal that the interfacial slips of composite beams can be reduced by the adoption of stepwise distributed connector layout. The attached deflection of the composite beams and the concrete slab cracks caused by slips can be reduced sequentially, thus the structure durability can be improved.Keywords:composite beam; shear connector; stepwise uniform distribution; interfacial slip; analytic solution*國家自然科學基金(50778086)，教育部博士點基金(20095314110008)，云南省自然科學基金(2006E0024M)。作者簡介：王鵬，博士研究生，Email:wangpengletter@163.com。參考文獻［1］GB50017—2003 鋼結構設計規(guī)范［S］.北京:中國計劃出版社,2003.［2］聶建國，沈聚敏，余志武. 考慮滑移效應的鋼\|混凝土組合梁變形計算的折減剛度法［J］. 土木工程學報, 1995,28(6):11\|17.［3］ZHOU DONGHUA Auswirkung der verformbarkeit der verbundmittel und teilverbundes auf das tragverhalten und die tragf higkeit von verbundtr gern mit querschnittssprüngen［M］.Shaker\|Verlag, 2003.［4］NEWMARK N M, SIESS C P, VIEST I M Tests and analysis of composite beams with incomplete interaction［J］. Proceeding of the Society of Experimental Stress Analysis, 1951,9(1):75-92.［5］NIE JIANGUO, CAI C S, MASCE P E. Steel-concrete composite beams considering shear slip effects［J］. Journal of Structural Engineering, ASCE, 2003,129(4):495-506.［6］WANG Y C. Deflection of steel-concrete composite beams with partial shear interaction［J］. Journal of Structural Engineering, ASCE,1998,147(10):1159-1165.［7］王連廣.鋼-混凝土組合結構理論與計算［M］.北京:科學出版社,2005.［8］聶建國.鋼-混凝土組合梁結構——試驗、理論與應用［M］.北京:科學出版社,2005.［9］劉堅，周東華，王文達.鋼-混凝土組合結構設計原理［M］.北京:科學出版社,2005.［10］聶建國，沈聚敏，袁彥聲. 鋼-混凝土簡支組合梁變形計算的一般公式［J］.工程力學,1994,11(1): 21-27.［11］朱聘儒，國明超，朱起，等.鋼-混凝土組合梁協(xié)同工作的分析及試驗［J］.建筑結構學報,1987,11(5):26-37.
