| 早龄期混凝土板温度应力以及抗裂计算 |
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| 引用本文： | 彭兆锋,易红晟.早龄期混凝土板温度应力以及抗裂计算[J].科学技术与工程,2011,11(23). |
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| 作者姓名： | 彭兆锋 易红晟 |
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| 作者单位： | 1. 上海市政工程设计研究总院南方分院,佛山,528200
2. 华南理工大学土木与交通学院,广州,510640 |
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| 摘 要： | 通过对早龄期混凝土内温度场的监控，采用差分法来计算其温度应力，绘制出其应力成长曲线；对早龄期混凝土取芯，测出其弯拉强度，作为抗裂限值。将早龄期混凝土的温度应力与强度对比，以此来确定混凝土开裂规律。根据温度监控曲线，确定出混凝土内温差过大的时间段，以此来采取相应的工程措施进行防范。
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| 关 键 词： | 早龄期混凝土 温度应力 抗裂计算 温度控制 |
| 收稿时间： | 2011/3/14 0:00:00 |
| 修稿时间： | 3/15/2011 3:59:08 PM |
Early age concrete slab temperature stress and anti-crack calculation |
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| Peng Zhao-feng and Yi Hong-sheng.Early age concrete slab temperature stress and anti-crack calculation[J].Science Technology and Engineering,2011,11(23). |
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| Authors: | Peng Zhao-feng and Yi Hong-sheng |
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| Institution: | PENG Zhao-feng1,YI Hong-sheng2 (Shanghai Municipal Engineering Research Institute(Southern Branch),Fushan 528200,P.R.China,School of Civil and Traffic Institute,South China University of Technology2,Guangzhou 510640,P.R.China) |
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| Abstract: | Through monitor the temperature field of the early age concrete, then using finite difference method to calculate its temperature stress, plot its time-stress curve. Drill several cores at different ages of the early age concrete, then measure its flexural strength, take this flexural strength as the anti-cracking limits. Compare the temperature stress to the flexural stress which is used to obtain the cracking rules of the early age concrete. According the temperature monitoring curves, the range of temperature that have great gap can be determined out, in order to take corresponding engineering measures to protect against it. |
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| Keywords: | early age concrete temperature stress crack calculate temperature control |
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