型钢腹板高度对钢骨混凝土梁承载力分析
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摘要
为了研究钢骨混凝土梁抗弯承载力变化的影响因素,本文讨论了钢骨混凝土梁截面和型钢翼缘尺寸相同时,不同钢骨混凝土梁型钢腹板高度对抗弯承载力的影响。通过计算分析,钢骨混凝土梁的抗弯承载力并非随着型钢腹板高度的增加而增长。当型钢全截面位于中和轴以下时,钢骨混凝土梁的承载力较高,用钢量最省,梁的自重较轻。当型钢腹板增加到上翼缘位于中和轴时,承载力显著降低。型钢腹板增长到梁中和轴以上,承载力虽随着腹板高度而增加,但型钢中和轴以上部分受压,不符合钢材的受力特点且用钢量大。
In order to study the influencing factors of the flexural capacity of steel reinforced concrete beams,this paper discusses the influence of different steel reinforced concrete beam webs on the flexural capacity of steel reinforced concrete beams and steel flanges.Through calculation and analysis,the flexural capacity of the steel reinforced concrete beam does not increase with the increase of the height of the steel web.When the full section of the steel is below the neutral axis,The steel reinforced concrete beam has higher bearing capacity, saves steel,and the beam has a lighter weight.When the steel web is increased until the upper flange is located on the neutral axis,the bearing capacity is significantly reduced.The steel web grows above the beam and above the shaft,and the bearing capacity increases with the height of the web. However,the section above the neutral shaft of the section steel is pressed,which does not meet the stress characteristics of the steel and has a large amount of steel.
In order to study the influencing factors of the flexural capacity of steel reinforced concrete beams,this paper discusses the influence of different steel reinforced concrete beam webs on the flexural capacity of steel reinforced concrete beams and steel flanges.Through calculation and analysis,the flexural capacity of the steel reinforced concrete beam does not increase with the increase of the height of the steel web.When the full section of the steel is below the neutral axis,The steel reinforced concrete beam has higher bearing capacity, saves steel,and the beam has a lighter weight.When the steel web is increased until the upper flange is located on the neutral axis,the bearing capacity is significantly reduced.The steel web grows above the beam and above the shaft,and the bearing capacity increases with the height of the web. However,the section above the neutral shaft of the section steel is pressed,which does not meet the stress characteristics of the steel and has a large amount of steel.
引文
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[7]JGJ138-2016,组合结构设计规程[S].北京:中国建筑工业出版社,2016.
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[3]赵鸿铁.组合结构设计原理(第一版)[M].北京:高等教育出版社,2001.
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[5]DL/T5080-1999,钢-混凝土组合结构设计规程[S].北京:中国建筑工业出版社,2001.
[6]GB50010-2010,混凝土结构设计规范[S].北京:中国建筑工业出版社,2015.
[7]JGJ138-2016,组合结构设计规程[S].北京:中国建筑工业出版社,2016.