Thermal Propagation through Tensile Cracks in Reinforced Concrete
Thermal Propagation through Tensile Cracks in Reinforced Concrete
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DOI：
10.1061/(asce)mt.1943-5533.0000417
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发表时间：
2012-05-01
影响因子：
3.2
通讯作者：
Pankaj, P.
中科院分区：
文献类型：
--
作者：
Ervine, A.;Gillie, M.;Pankaj, P.
对钢筋混凝土梁的拉伸裂缝热传播进行了试验研究。比较了未损坏梁、有轻微裂纹的梁和有严重裂纹的梁的热传播速率。结果表明，裂纹梁在受热过程中的热传播比未损伤梁有较小的减小。可以确定，所观察到的差异最有可能归因于较小的几何、机械和混凝土成分差异。因此，在结构分析中可以忽略拉伸裂缝对混凝土热传播的影响。值得注意的是，这意味着对开裂的受热混凝土结构的分析可以按照目前的常规顺序进行传热和力学分析，而不需要完全耦合的热-力学分析。DOI: 10.1061 /(陈纯)mt.1943 - 5533.0000417。(C) 2012美国土木工程师学会。
The thermal propagation through tensile cracks in reinforced concrete beams is examined experimentally. A comparison is made between the rate of thermal propagation through beams that are undamaged, beams that have minor cracking, and beams that have major cracking. The results show a small decrease in the thermal propagation of the cracked beams in comparison with undamaged beams during heating. It is determined that the differences observed are most likely attributable to small geometric, mechanical, and concrete compositional differences. Consequently, it is concluded that the effects of tensile cracking on the thermal propagation through concrete can be ignored in structural analyses. Significantly, this means that analyses of heated concrete structures that are cracked can be carried out with heat-transfer and mechanical analyses being conducted sequentially, as is currently normal, and fully coupled thermomechanical analyses are not required. DOI: 10.1061/(ASCE)MT.1943-5533.0000417. (C) 2012 American Society of Civil Engineers.