摘要
对四根反向加载钢—混凝土简支组合梁和两根两跨连续钢—混凝土组合梁进行了试验研究，对组合梁负弯矩区的工作性能进行了探讨。结果表明，配筋率、力比及栓钉连接件间距是影响负弯矩区混凝土板裂缝宽度的主要因素。在试验研究的基础上建立了钢—混凝土组合梁负弯矩区平均裂缝间距和裂缝宽度计算公式。根据文中建议公式所得到的计算结果与实测值吻合较好。
Based on one key construction project in China, experiments were conducted on four simply supported composite steel concrete beams under negative moment and two continuous two span composite beams under point loads. The investigation results showed that reinforcement content, force ratio, and space of stud connectors are the main influence factors on the crack width of concrete flange in tension of composite beams. In terms of the test results and analysis, formulae are proposed for estimating crack space and maximum crack width. The predicted results are in good agreement with experimental results. The formulae suggested have beenapplied to the design practice of engineering.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1997年第6期95-99,共5页
Journal of Tsinghua University(Science and Technology)
基金
国家教委回国留学人员科研资助
关键词
钢-混凝土
组合梁
负弯矩区
混凝土板
裂缝
composite steel concrete beam
concrete flange in tension
crack
influence factors
prediction of crack width
