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| 含有改性混凝土叠合层的T形梁抗裂性能研究 | |
| 引用本文： | 王伯昕,黄承逵,何化南,杨成蛟,陈生年.含有改性混凝土叠合层的T形梁抗裂性能研究[J].大连理工大学学报,2009,49(6):897-901. |
| 作者姓名： | 王伯昕 黄承逵 何化南 杨成蛟 陈生年 |
| 作者单位： | 1. 大连理工大学,海岸和近海工程国家重点实验室,辽宁,大连,116024;吉林大学,建筑工程学院,吉林,长春,130026 2. 大连理工大学,海岸和近海工程国家重点实验室,辽宁,大连,116024 3. 大连理工大学,海岸和近海工程国家重点实验室,辽宁,大连,116024;沈阳都市建筑设计有限公司,辽宁,沈阳,110015 4. 大连理工大学,海岸和近海工程国家重点实验室,辽宁,大连,116024;沈阳铝镁设计研究院,辽宁,沈阳,110001 |
| 基金项目： | 辽宁省交通厅重点科研基金资助项目(200514) |
| 摘 要： | 基于8根混凝土倒T形叠合梁受弯试验,研究了钢筋钢纤维自应力混凝土做加固材料层二次浇注到待加固混凝土T形梁,从而形成的叠合梁在负弯矩区的抗裂性能.试验结果表明,仅占叠合梁高13.9%的叠合层将梁的开裂弯矩提高44.9%.同时根据已有理论模型,推导了自应力混凝土叠合T梁后加自应力的求法和负弯矩区正截面抗裂计算公式,其计算结果与试验结果比较吻合. |
| 关 键 词： | 钢纤维 自应力混凝土 抗裂 叠合梁 负弯矩区 |
Study of crack resistance of modified concrete layers reinforced composite T-beams |
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| WANG Boxin,HUANG Chengkui HE Huanan YANG Chengjiao,CHEN Shengnian,JP.Study of crack resistance of modified concrete layers reinforced composite T-beams[J].Journal of Dalian University of Technology,2009,49(6):897-901. | |
| Authors: | WANG Boxin HUANG Chengkui HE Huanan YANG Chengjiao CHEN Shengnian JP |
| Institution: | WANG Bo-xin1,2,HUANG Cheng-kui1,HE Hua-nan1,YANG Cheng-jiao1,3,CHEN Sheng-nian1,41.State Key Laboratory of Coastal , Offshore Engineering,Dalian University of Technology,Dalian 116024,China,2.College of Construction Engineering,Jilin University,Changchun 130026,3.Shenyang Urban Architecture Design Co.,LTD,Shenyang 110015,4.Shenyang Aluminum&Magnesium Engineering & Research Institute,Shenyang 110001 |
| Abstract: | Based on the experiments of 8 composite concrete inverted T-beams,crack resistance in negative moment area of the beams reinforced steel fiber self-stressing concrete layer was investigated.The test results obviously indicate that the composite layers enhance the cracking moments 44.9% more than that of common concrete layers,though its height is only 13.9% of the cross section height.Meanwhile according to the existing theoretical models,a procedure to determine the self-stress is supplied and a formula wh... |
| Keywords: | steel fiber self-stressing concrete crack resistance composite beam negative moment area |
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