Because of the special stress conditions of studs in cable-pylon composite anchor structure, it is necessary to study the mechanical features of studs under the vertical pressure of concrete pylon and the horizontal force and their interactions. The stud push-out test is analyzed by finite element method (FEM) and the simulation is validated by the experimental results. Based on FEM, this paper studies the shear capacity, shear stiffness, deformation and stress distribution of studs under loading conditions which are the vertical pressure of concrete pylon and horizontal force and their interactions. The results show that the vertical pressure affects the shear capacity and shear stiffness of studs. In the case with the same amplitude variation, changes of the horizontal tension affects the shear capacity of stud significantly, while changes of horizontal pressure affects the shear stiffness of studs significantly. Under the two loading conditions, the deformation and stress distribution of studs performs in the similar way. Under the interaction of the vertical pressure and horizontal force, the variation patterns of shear capacity and shear stiffness of studs are different, while the contact conditions of steel and concrete are different.
ZHAO Min
,
LU Wenru
. Mechanical Features of Stud Connector under Loading Conditions[J]. Science & Technology Review, 2014
, 32(10)
: 74
-79
.
DOI: 10.3981/j.issn.1000-7857.2014.10.013
[1] Viest I M. Investigation of stud shear connectors for composite concrete and steel t-beams[J]. Journal of the American Concrete Institute, 1956, 52(4): 875-892.
[2] Oehlers D J, Johnson R P. Strength of stud connections in composite beams[J]. The Journal of Structural Engineering, 1987, 65B(2): 44-48.
[3] 聂建国, 谭英, 王洪全. 钢-高强混凝土组合梁栓钉抗剪连接件的设计 计算[J]. 清华大学学报: 自然科学版, 1999, 39(12): 94-97. Nie Jianguo, Tan Ying, Wang Hongquan. Strength of stud shear connectors in composite steel-HC beams [J]. Journal Tsinghua University: Science and Technolagy, 1999, 39(12) :94-97.
[4] 郑则群, 房贞政. 剪力连接件对预应力钢-混凝土组合梁受力性能的 影响[J]. 福州大学学报: 自然科学版, 2001, 29(1): 74-77. Zheng zequn, Fang Zhenzheng. The influence of the shear connectors on the stress behavior of prestressed composite steel-concrete beams[J]. Journal of Fuzhou University: Nature Science, 2001, 29(1):74-77.
[5] 张喜刚, 刘玉擎. 组合索塔锚固结构[M]. 北京: 人民交通出版社, 2010: 16-20. Zhang Xigang, Liu Yuqing. Cable-tower composite anchorage[M]. Beijing: China Communications Press, 2010: 16-20.
[6] Shim C S, Lee P G, Yoon T Y. Static behavior of large stud shear connectors[J]. Engineering Structues, 2004, 26(12): 1853-1860.
[7] 刘玉擎. 组合结构桥梁[M]. 北京: 人民交通出版社, 2005: 25-28. Liu Yuqing. Composite structure bridge[M]. Beijing: China Communications Press, 2005: 25-28.
[8] European Committee for Standardization. Eurocode 4: Design of composite steel and concrete structures-Part.1: General rules for buildings[S]. Bruselas: European Committee for Standardization, 1994.
[9] Wang Y C. Deflection of steel-concrete composite beams with partial shear interaction[J]. Journal of Structure Engineering, 1998, 124(10): 1159-1165.
[10] Oehlers D J, Coughlan C G. The shear stiffness of stud shear connections in composite beams[J]. Journal of Constructional Steel Research, 1986, 6(4): 273–284.
[11] 聂建国, 刘明, 叶列平. 钢-混凝土组合结构[M]. 北京: 中国建筑工业 出版社, 2011: 79-80. Nie Jianguo, Liu Ming, Ye Lieping. Steel-concrete composite structure[M]. Beijing: China Architecture & Building Press, 2011: 79-80.
