| 现浇板砼收缩与温差联合作用裂缝控制计算 |
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| 引用本文： | 刘金铃.现浇板砼收缩与温差联合作用裂缝控制计算[J].福建建设科技,2007(1):13-16. |
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| 作者姓名： | 刘金铃 |
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| 作者单位： | 福州大学基建办,350002 |
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| 摘 要： | 分析现浇板因砼收缩和温差影响的组合作用裂缝的产生机理。通过微元体建立建筑外周梁与室内板间的静力平衡关系,导出以砼极限收缩应变值ε反映砼材料质量影响的外梁温差内力计算公式。提出现浇板抗第二类荷载裂缝的计算模式和相应的强度计算式。
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| 关 键 词： | 砼收缩 同时温差 计算温差 折算温度 温差内力 抗裂强度 |
| 收稿时间： | 2006-03-23 |
Calculation of Crack Control in Cast-in-Situ Concrete Slab under Combined Action of Concrete Contraction and Temperature Difference |
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| Liu Jin-ling.Calculation of Crack Control in Cast-in-Situ Concrete Slab under Combined Action of Concrete Contraction and Temperature Difference[J].Fujian Construction Science & Technology,2007(1):13-16. |
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| Authors: | Liu Jin-ling |
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| Affiliation: | Liu Jin-ling |
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| Abstract: | This paper analyzes mechanism of crack development in cast - in - place concrete under combined action of concrete contraction and temperature difference. A calculation formula for internal force of temperature difference in peripheral beam is deduced according to unit static equilibrium between the peripheral beam and interior slab, a calculation model and corresponding strength formula are proposod for the cracks induced by the second kind loads in cast - in situ concrete. |
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| Keywords: | contraction of concrete synchro - temperature difference convert calculating temperature temperature gradient - induced forces Fracture resistance strength |
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