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碾压混凝土穿透诱导缝裂纹断裂模型研究 被引量:3

Study on Induced Crack Fracture Model of Roller Compacted Concrete
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摘要 为解决双线性模型用于分析小尺寸混凝土试件裂纹时存在较大误差的问题,在内含穿透诱导缝的碾压混凝土轴拉试验基础上,采用软化应力分配规律理论,确定了穿透诱导缝缝端虚拟裂纹的黏聚力分布公式,推导了诱导缝临界张开位移、亚临界裂纹扩展长度、断裂韧度的计算方法;在对诱导缝边界作了修正后,得到了穿透诱导缝修正双线性断裂计算模型;对不同削弱度的穿透诱导缝的断裂参数进行了求解,与有关文献介绍的结果进行了比较,验证了所建模型的可靠性。
出处 《人民黄河》 CAS 北大核心 2005年第6期55-57,共3页 Yellow River
基金 国家自然科学基金项目(50179002)。
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参考文献11

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