早龄期混凝土板温度应力以及抗裂计算
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Early age concrete slab temperature stress and anti-crack calculation
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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。

    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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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, (23): .
Peng Zhao-feng, Yi Hong-sheng. Early age concrete slab temperature stress and anti-crack calculation[J]. Science Technology and Engineering,2011,(23).

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  • 收稿日期:2011-03-14
  • 最后修改日期:2011-03-15
  • 录用日期:2011-03-21
  • 在线发布日期: 2011-07-08
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