基于桩基m法的组合梁栓钉剪力件剪切刚度计算方法  

Shear stiffness calculation method of shear connector in composite girder based on m method assumption for piles

作　　者：徐家慧[1] 张石波 黄永辉[4] 李平杰[5] Xu Jiahui;Zhang Shibo;Huang Yonghui;Li Pingjie(Guangzhou Urban Planning&Design Survey Research Institute,510060,Guangzhou,China;Guangzhou Public Resources Trading Center,510630,Guangzhou,China;School of Civil Engineering and Transportation,South China University of Technology,510640,Guangzhou,China;Research Center for Wind Engineering and Engineering Vibration,Guangzhou University,510006,Guangzhou,China;CCCC Fourth Harbor Engineering Institute Co.,Ltd.,510230,Guangzhou,China)

机构地区：[1]广州市城市规划勘测设计研究院,广州510060 [2]广州公共资源交易中心,广州510630 [3]华南理工大学土木与交通学院,广州510640 [4]广州大学风工程与工程振动研究中心,广州510006 [5]中交四航工程研究院有限公司,广州510230

出　　处：《应用力学学报》2021年第4期1690-1697,共8页Chinese Journal of Applied Mechanics

基　　金：国家自然科学基金(51678169);广州市珠江科技新星专项资助(201806010162)。

摘　　要：首先将混凝土中的栓钉类比为土体中的桩基;然后根据m法建立了混凝土中栓钉变形的平衡微分方程;再采用幂级数法对该平衡微分方程进行求解,得到了栓钉剪切刚度计算的通用公式及荷载-滑移本构关系曲线。将本文推导的理论结果与国内外文献的结果进行对比分析,验证了本文结果的正确性。Firstly,the shear connectors buried in concrete are regarded as the piles buried in the solid.Then,an equilibrium differential equations of shear connector is conducted based on the m method assumption for pile.After that,an analytic method for calculating the slip stiffness of shear connector has been proposed by solving the differential equations using the power series expansion,and a constitutive relation between load and slip is established.The accuracy of the proposed method is verified by comparing with the theoretical results and experimental results proposed by literatures.

关 键 词：组合梁 剪力件 桩基 M法 剪切刚度 理论推导 

分 类 号：U441.5[建筑科学—桥梁与隧道工程]