摘要
进行了2根部分外包组合简支梁和6根预应力部分外包组合简支梁的抗弯性能试验,通过对构件试验数据和现象的分析,发现对构件施加预应力能有效提高其极限承载力并减小其挠度,但预应力水平的提高对其挠度的减小影响较小;增加构件截面宽度也能有效提高其极限承载力,但同样对其挠度影响较小。同时推导出这种新型组合梁在正常使用状态下的挠度计算方法,计算结果与试验结果吻合度良好。
The flexural behavior of 2 partially concrete encased composite beams and 6 prestressed partially concrete encased composite beams were tested. Through the analysis of the experimental data and phenomenon,it was found that prestress applied to members could effectively improve the ultimate bearing capacity and decreased the deflection,but increasing the prestress level had little influence on its deflection. The increase of the section width could effectively improve the ultimate bearing capacity,but it had little influence on members＇ deflection. At the same time,the deflection calculation method of the new type of composite beams was proposed under the state of serviceability. The calculation results were in good agreement with the test results.
出处
《工业建筑》
CSCD
北大核心
2018年第2期89-94,共6页
Industrial Construction
关键词
截面宽度
预应力
部分外包组合梁
挠度
计算方法
cross-section width
prestressed
partially concrete encased composite beams
deflection
calculation method
