外置钢板对拉连接装配式柱节点力学性能试验研究
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摘要
为了考察钢筋套筒灌浆连接装配式混凝土柱连接节点的力学性能,并对节点连接方式给予改进,设计并制作了6根装配式混凝土受压试件,其中3根试件采用钢筋套筒灌浆连接方式,另3根试件采用套筒灌浆+对拉钢板的连接方式。对6根试件施加轴向压力,获得各试件极限承载力、轴向变形和材料应力变化等试验数据。基于试验数据,开展了这类压弯作用下力学性能研究。结果表明:采用对拉钢板连接节点的受压试件在受力过程中,其控制截面基本符合平截面假定;在偏心受压条件下,采用对拉钢板连接节点的试件能够显著提高试件的屈服荷载和极限承载力,其受拉区裂缝得到明显的抑制,有效提高了压弯节点截面刚度,且表现出较好的延性;随着偏心距的增大,对拉钢板对压弯节点的屈服荷载和极限荷载特征值提高幅度逐渐增加。
In order to study the mechanical properties of the joints of the prefabricated concrete column with grout-filled coupling sleeves and improve the connection mode of the joints,three joints are fabricated by grout-filled coupling sleeves,the other three joints are adopted by grout-filled coupling sleeves and double pretension steel plates. The test data such as bearing capacity,the longitudinal deformation and the stress change of the material are obtained under axial loading. Based on the test data,the results show that the concrete column joints with grout-filled coupling sleeves and double pretension steel plates agree with flat section assume during the process of stress. The joints with grout-filled coupling sleeves and double pretension steels can significantly improve the yield load and ultimate bearing capacity of joints under eccentric compression, the cracks in the tension zone are obviously suppressed, and it effectively improves the compression bending joints' section stiffness and shows good ductility. With the increase of eccentricity,the eigenvalues of yield load and ultimate load of double pretension steel plates acting on concrete column joints increase gradually.
In order to study the mechanical properties of the joints of the prefabricated concrete column with grout-filled coupling sleeves and improve the connection mode of the joints,three joints are fabricated by grout-filled coupling sleeves,the other three joints are adopted by grout-filled coupling sleeves and double pretension steel plates. The test data such as bearing capacity,the longitudinal deformation and the stress change of the material are obtained under axial loading. Based on the test data,the results show that the concrete column joints with grout-filled coupling sleeves and double pretension steel plates agree with flat section assume during the process of stress. The joints with grout-filled coupling sleeves and double pretension steels can significantly improve the yield load and ultimate bearing capacity of joints under eccentric compression, the cracks in the tension zone are obviously suppressed, and it effectively improves the compression bending joints' section stiffness and shows good ductility. With the increase of eccentricity,the eigenvalues of yield load and ultimate load of double pretension steel plates acting on concrete column joints increase gradually.
引文
[1] 祝雯,黄石明,高梓贤. 装配式混凝土结构钢筋套筒灌浆料的研究现状及发展趋势[J]. 广州建筑,2017,45(3): 22-26
[2] 柳旭东,王东辉,刘帅等. 装配式梁柱边节点抗震性能试验研究[J]. 建筑结构,2016,45(10): 87-90
[3] 王燕,马强强,王松森. 装配式钢结构梁柱内套筒组合螺栓连接节点力学性能研究[J]. 天津大学学报,2016,49(S): 73-79
[4] 韦讳. 全预制装配式混凝±结构节点研究[D]. 沈阳: 东北大学,2014
[5] 徐晓珂.装配式混凝土结构高层公寓楼设计[J].建筑结构,2017,47(10): 1-8
[6] 马军卫,潘金龙,尹万云,等. 全装配式钢筋混凝土框架-剪力墙结构抗震性能试验研究[J]. 建筑结构学报,2017,38(6): 12-22
[7] 王静峰,王海涛,王冬花,等. 钢管混凝土柱-钢梁单边高强螺栓端板连接框架的拟静力试验研究[J]. 土木工程学报,2017,50(4): 13-31
[8] 焦安亮,张中善,郜玉芬,等. 装配式环筋扣合锚接混凝土剪力墙足尺拟动力试验研究[J]. 工业建筑,2017,47(4): 45-50
[9] JG/T 398—2012,钢筋连接用灌浆套筒[S]
[10] JG/T 408—2013,钢筋连接用套筒灌浆料[S]
[11] JGJ 355—2015,钢筋套筒灌浆连接应用技术规程[S]
[12] Ong H Y. Experimental study of grout filled splice sleeve integrated with shear key for precast concrete connection[D]. Johor: Technological University of Malaysia,2010
[13] Ameli M J,Parks J E,Brown D N,et al. Seismic evaluation of grouted splice sleeve connections for reinforced precast concrete column-to-cap beam joints in accelerated bridge construction[J]. PCI Journal,2015,60(2): 80-103
[14] Riva P. Seismic behavior of precast column-to- foundation grouted sleeve connections [A]. International Conference on Advances in Engineering Structures,Mechanics & Construction[C]. Canada,2006: 121-128
[15] Kim Y M. A study of pipe splice sleeves for use in precast beam-column connections[D]. Austin: University of Texas,2000
[16] 刘香,崔涛,伍敏,等. 直螺纹灌浆套筒连接的预制剪力墙抗震性能试验研究[J]. 内蒙古科技大学学报,2016,35(2): 195-200
[17] 罗青儿,王蕴,翁煜辉,等. 装配整体式钢筋混凝土框架梁柱节点的试验研究[J]. 工业建筑,2009,39(2): 80-83
[18] 赵作周,韩文龙,钱稼茹,等. 钢筋套筒挤压连接装配整体式梁柱中节点抗震性能试验研究[J]. 建筑结构学报,2017,38(4): 45-53
[19] 张臻. 高层钢筋混凝土结构中预制拼装柱的抗震性能研究[D]. 哈尔滨: 哈尔滨工业大学,2013
[20] 赵勇,李锐,王晓锋,等. 大直径高强钢筋套筒灌浆连接预制柱抗震性能试验研究[J].土木工程学报,2017,(5): 27-35
[2] 柳旭东,王东辉,刘帅等. 装配式梁柱边节点抗震性能试验研究[J]. 建筑结构,2016,45(10): 87-90
[3] 王燕,马强强,王松森. 装配式钢结构梁柱内套筒组合螺栓连接节点力学性能研究[J]. 天津大学学报,2016,49(S): 73-79
[4] 韦讳. 全预制装配式混凝±结构节点研究[D]. 沈阳: 东北大学,2014
[5] 徐晓珂.装配式混凝土结构高层公寓楼设计[J].建筑结构,2017,47(10): 1-8
[6] 马军卫,潘金龙,尹万云,等. 全装配式钢筋混凝土框架-剪力墙结构抗震性能试验研究[J]. 建筑结构学报,2017,38(6): 12-22
[7] 王静峰,王海涛,王冬花,等. 钢管混凝土柱-钢梁单边高强螺栓端板连接框架的拟静力试验研究[J]. 土木工程学报,2017,50(4): 13-31
[8] 焦安亮,张中善,郜玉芬,等. 装配式环筋扣合锚接混凝土剪力墙足尺拟动力试验研究[J]. 工业建筑,2017,47(4): 45-50
[9] JG/T 398—2012,钢筋连接用灌浆套筒[S]
[10] JG/T 408—2013,钢筋连接用套筒灌浆料[S]
[11] JGJ 355—2015,钢筋套筒灌浆连接应用技术规程[S]
[12] Ong H Y. Experimental study of grout filled splice sleeve integrated with shear key for precast concrete connection[D]. Johor: Technological University of Malaysia,2010
[13] Ameli M J,Parks J E,Brown D N,et al. Seismic evaluation of grouted splice sleeve connections for reinforced precast concrete column-to-cap beam joints in accelerated bridge construction[J]. PCI Journal,2015,60(2): 80-103
[14] Riva P. Seismic behavior of precast column-to- foundation grouted sleeve connections [A]. International Conference on Advances in Engineering Structures,Mechanics & Construction[C]. Canada,2006: 121-128
[15] Kim Y M. A study of pipe splice sleeves for use in precast beam-column connections[D]. Austin: University of Texas,2000
[16] 刘香,崔涛,伍敏,等. 直螺纹灌浆套筒连接的预制剪力墙抗震性能试验研究[J]. 内蒙古科技大学学报,2016,35(2): 195-200
[17] 罗青儿,王蕴,翁煜辉,等. 装配整体式钢筋混凝土框架梁柱节点的试验研究[J]. 工业建筑,2009,39(2): 80-83
[18] 赵作周,韩文龙,钱稼茹,等. 钢筋套筒挤压连接装配整体式梁柱中节点抗震性能试验研究[J]. 建筑结构学报,2017,38(4): 45-53
[19] 张臻. 高层钢筋混凝土结构中预制拼装柱的抗震性能研究[D]. 哈尔滨: 哈尔滨工业大学,2013
[20] 赵勇,李锐,王晓锋,等. 大直径高强钢筋套筒灌浆连接预制柱抗震性能试验研究[J].土木工程学报,2017,(5): 27-35