L形双连接板实体式方钢管混凝土组合柱抗震性能研究

引用文献：

杨晓明李金杭韩孝坤刘凯. L形双连接板实体式方钢管混凝土组合柱抗震性能研究[J]. 建筑结构，2023，48（10）：47-54.

YANG Xiaoming LI Jinhang HAN Xiaokun LIU Kai. Study on seismic performance of L-shaped solid concrete-filled square steel tubular composite columns with double connecting plates[J]. Building Structure，2023,48（10）：47-54.

作者：杨晓明李金杭韩孝坤刘凯

单位：青岛理工大学土木工程学院青岛理工大学工程质量检测鉴定中心

摘要：提出了一种采用双连接板的L形实体式方钢管混凝土组合柱，为了研究其抗震性能，设计了3个采用不同的钢管连接件的尺寸(宽度分别为100mm或200mm)、不同轴压比(0.4和0.6)的试件。对各试件施以不同的竖向恒载，进行了拟静力试验，讨论了试验参数对试件抗震性能的影响。结果表明：连接板宽度与水平峰值荷载和刚度呈正相关，增加连接板宽度对两者的提升很大，与延性和耗能能力呈负相关，增大连接板宽度两者有所下降，而且更宽的连接板会加剧强度退化和刚度退化；竖向恒载与水平峰值荷载和耗能能力呈负相关，加大轴压比导致两者均变小，且加剧了刚度衰减，但是能在一定程度上改善延性，强度退化也更均匀。通过有限元模拟研究了钢管壁厚度、钢管管径和钢材强度等级对组合柱受力性能的影响。结果表明：增大钢管壁厚度、钢管管径都可以显著加强L形双连接板实体式方钢管混凝土组合柱的水平峰值荷载和刚度，但变形能力即延性也明显下降；提高钢材强度等级则能使水平峰值荷载和延性都得到改善。

关键词：钢管混凝土组合柱；双连接板；低周往复荷载试验；抗震性能；水平峰值荷载；

作者简介：杨晓明，博士，研究员，主要从事钢结构研究、建筑结构鉴定与加固，Email:yxmqd59@163.com。李金杭，硕士，主要从事钢结构研究，Email:1243566848@qq.com。

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参考文献[1] 雷敏，沈祖炎，李元齐，等.异形钢管混凝土柱研究现状[J].结构工程师，2013,29(3):155-163.
[2] 周婷.方钢管混凝土组合异形柱结构力学性能与工程应用研究[D].天津：天津大学，2012.
[3] 王亚雯.方钢管混凝土组合异形柱抗震性能研究[D].天津：天津大学，2014.
[4] 熊清清.L形双板连接钢管混凝土组合异形柱力学性能研究[D].天津：天津大学，2017.
[5] 张娟.L形钢管混凝土柱的地震损伤分析及抗震性能研究[D].荆州：长江大学，2019.
[6] 王家富，杨晓明，刘凯.L形缀板式钢管混凝土组合柱抗震性能试验研究[J].低温建筑技术，2019,41(12):50-54.
[7] 薛彦涛，赵国扬.高层结构抗震模型试验[J].建筑结构，1997,27(6):48-51.
[8] 杨俊杰.相似理论与结构模型试验[M].武汉：武汉理工大学出版社，2005.
[9] 建筑抗震试验规程：JGJ/T 101—2015[S].北京：中国建筑工业出版社，2015.
[10] 王丹，吕西林.T形、L形钢管混凝土柱抗震性能试验研究[J].建筑结构学报，2005,26(4):39-44,106.
[11] 韩林海.钢管混凝土结构：理论与实践[M].3版.北京：科学出版社，2016.
[12] 秦浩，赵宪忠.ABAQUS混凝土损伤因子取值方法研究[J].结构工程师，2013,29(6):27-32.
[13] 混凝土结构设计规范：GB 50010—2010[S].2015年版.北京：中国建筑工业出版社，2015.

Study on seismic performance of L-shaped solid concrete-filled square steel tubular composite columns with double connecting plates

YANG Xiaoming LI Jinhang HAN Xiaokun LIU Kai

(School of Civil Engineering, Qingdao University of Technology Engineering Quality Inspection and Appraisal Center, Qingdao University of Technology)

Abstract: An L-shaped solid concrete-filled square steel tubular composite column with double connecting plates was proposed. In order to study its seismic performance, three specimens with different dimensions of steel tube connectors(width: 100mm or 200mm, respectively) and different axial compression ratios(0.4 and 0.6) were designed. Pseudo-static tests were carried out on each test-piece under different vertical dead loads, the impact of test parameters on the seismic performance of the test-piece was discussed. The results show that the width of the connecting plate is positively correlated with stiffness and horizontal peak load, while increasing the width of the connecting plate greatly improves both, and is negatively correlated with ductility and energy dissipation capacity. Increasing the width of the connecting plate decreases both, and wider connecting plates can exacerbate strength and stiffness degradation; The vertical dead load is negatively correlated with horizontal peak load and energy dissipation capacity. Increasing the axial compression ratio leads to both becoming smaller and exacerbating the stiffness attenuation, but it can improve ductility to some extent, and the strength degradation is more uniform. The effects of steel pipe wall thickness, pipe diameter, and steel strength grade on the mechanical properties of composite columns were studied through finite element simulation. The result show that increasing the thickness and diameter of the steel tube wall can significantly enhance the horizontal peak load and stiffness of the L-shaped solid concrete-filled square steel tubular composite columns with double connecting plate, but the ductility also significantly decrease; Increasing the strength grade of steel can improve both the horizontal peak load and ductility.

Keywords: concrete-filled steel tubular composite column; double connecting plate; low-cycle repeated load test; seismic performance; horizontal peak load

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