摘要
为了对不同夹层混凝土强度的钢-混组合截面外包薄钢组合管梁抗弯性能进行分析,通过试验和有限元软件模拟相结合的方法,选用外层为薄壁不锈钢管,内层为钢管,双壁管中间分别喷注混凝土强度等级为C20、C40、C60的三种试件,采用分级加载方式对试件进行加载,试验结果与有限元软件模拟的结果相吻合。研究结果表明:随着混凝土强度的提高,试件的抗弯承载力提高、延性增大,能发生较大的塑性变形以吸收能量。
In this paper,the combination of experimental and finite element software simulation is used to analyze the bending resistance of steel-concrete composite cross-section thin steel composite pipe beams with different interlayer concrete strength.The outer layer is made of thin-walled stainless steel pipe,the inner layer is steel pipe,and the three test pieces of concrete strength grades C20,C40 and C60 are respectively sprayed in the middle of the double-walled pipe,and the test pieces are loaded by the grading loading method,and the test results are limited.The results of the meta-software simulation are consistent.The results show that with the increase of concrete strength,the flexural capacity of the specimen and the ductility increase,and large plastic deformation can occur to absorb energy.The test results obtained can provide a basis for future research.
作者
卢召红
刘薇
刘海水
LU Zhaohong;LIU Wei;LIU Haishui(School of civil engineering,Northeast petroleum university,Daqing163318,China;Key laboratory of disaster prevention and reduction engineering and protection engineering of heilongjiang province,northeast petroleum university,Daqing163318,China)
出处
《河北工程大学学报（自然科学版）》
CAS
2019年第2期109-112,共4页
Journal of Hebei University of Engineering:Natural Science Edition
基金
国家自然科学基金资助项目(51578120)
国家自然科学青年基金资助项目(11402051)
关键词
钢-混组合截面外包薄钢
组合管梁
抗弯性能
the steel-mixed composite section covered with thin steel
combined pipe girder
bending resistance
