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纸质出版:2006
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杜新喜 骆顺心 程晓燕 施浩. T形钢梁加强负弯矩区组合框架梁的试验研究[J]. 土木与环境工程学报(中英文), 2006,28(4).
Composite Steel- concrete Frame Beam with Reinforced Negative Bending Regions[J]. Journal of Civil and Environmental Engineering, 2006, 28(4).
杜新喜 骆顺心 程晓燕 施浩. T形钢梁加强负弯矩区组合框架梁的试验研究[J]. 土木与环境工程学报(中英文), 2006,28(4). DOI: 10.11835/j.issn.1674-4764.2006.04.014.
Composite Steel- concrete Frame Beam with Reinforced Negative Bending Regions[J]. Journal of Civil and Environmental Engineering, 2006, 28(4). DOI: 10.11835/j.issn.1674-4764.2006.04.014.
针对框架梁在梁端存在较大负弯矩及混凝土不能承受较大拉应力的状况,提出了在框架梁的负弯矩区段采用T形钢梁加强的组合框架梁模型。通过两个组合框架梁单层框架足尺模型的试验研究,得到新型组合框架梁的荷载一挠度曲线,截面应变分布曲线。从组合框架梁与一般组合梁的试验结果对比可看出,T形加强截面能有效提高梁的刚度,使框架梁刚度分布趋于合理。最后,提出并验证了按T形肋截断位置分成三段刚度不同的梁分析组合框架梁的方法。
Considering the large negative bending moment at the end of frame beam and low tensile strength of concrete
a new composite steel-concrete frame beam(CSCFB)
reinforced by a T shape steel beam at the negative bending regions
was brought forward.Through two full-scale of single-layer CSCFB frame models experiment
the load-displacement curves of CSCFB and strain distribution at cross section were obtained.Compared with the ordinary composite beam
the T shape reinforcing section can enhance the beam stiffness effectively
and make it distribute reasonably.The segment flexural rigidity method is presented and validated.
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