| 钢筋混凝土梁裂缝分型试验研究及统计分析 |
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| 引用本文： | 赵顺波,管俊峰,张学朋,程晓天,黄承逵.钢筋混凝土梁裂缝分型试验研究及统计分析[J].工程力学,2008,25(12). |
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| 作者姓名： | 赵顺波 管俊峰 张学朋 程晓天 黄承逵 |
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| 作者单位： | 华北水利水电学院土木与交通学院;大连理工大学土木水利学院; |
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| 基金项目： | 河南省杰出青年科学基金项目(04120002300);;河南省高校创新人才培养工程培养对象基金项目(豫教高[2004]294号) |
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| 摘 要： | 通过20根钢筋混凝土简支梁的试验,研究了纵向受拉钢筋和混凝土保护层厚度对裂缝分布形态的影响规律。根据各条裂缝的产生机理、延伸发展的特征和宽度变化规律,提出了钢筋混凝土梁的裂缝分型统计分析原则,确定了结构设计中裂缝宽度验算对应的裂缝形态特征,提出了以截面高度和纵向受拉钢筋直径为变量的纵向受拉钢筋有效影响区即有效受拉截面面积的计算方法,进行了平均裂缝间距、平均裂缝宽度及裂缝宽度扩大系数分布规律的统计分析。
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| 关 键 词： | 结构工程 钢筋混凝土 梁 裂缝 分布形态 有效受拉截面面积 混凝土保护层厚度 |
EXPERIMENTAL STUDY AND STATISTICAL ANALYSIS OF CRACK PATTERNS OF REINFORCED CONCRETE BEAMS |
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| ZHAO Shun-bo,GUAN Jun-feng,ZHANG Xue-peng,CHENG Xiao-tian,HUANG Cheng-kui.EXPERIMENTAL STUDY AND STATISTICAL ANALYSIS OF CRACK PATTERNS OF REINFORCED CONCRETE BEAMS[J].Engineering Mechanics,2008,25(12). |
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| Authors: | ZHAO Shun-bo GUAN Jun-feng ZHANG Xue-peng CHENG Xiao-tian HUANG Cheng-kui |
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| Affiliation: | 1. School of Civil Engineering and Communication;North China Institute of Water Conservancy and Hydroelectric Power;Zhengzhou;Henan 450011;China;2. School of Civil and Hydraulic Engineering;Dalian University of Technology;Dalian;Liaoning 116024;China |
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| Abstract: | Based on the tests of 20 simply support reinforced concrete beams, the effects of the longitudinal tensile reinforcement and the concrete cover on the crack distribution are studied. According to the pattern of the crack occurring, the crack elongation and the crack width, cracks are divided into several groups and analyzed statistically, the crack pattern corresponding to the structral design is determined. The method for calculating the effective influencing area of longitudinal tensile reinforcement (tha... |
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| Keywords: | structure engineering reinforced concrete beam crack pattern effective area of tensile concrete concrete cover |
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