基于灰色突变理论的隧道衬砌裂缝诊断模型

发布时间：2018-01-02 17:15

本文关键词：基于灰色突变理论的隧道衬砌裂缝诊断模型　出处：《交通运输工程学报》2015年03期 　论文类型：期刊论文

【摘要】：为了利用有限的监测数据评判隧道衬砌裂缝稳定性,应用小波变换对衬砌裂缝监测数据进行分析,去除因环境变化与测试误差而产生的高频部分,保留因围岩压力变化而产生的低频部分,实现了裂缝时效变形的分解。应用灰色理论建立了衬砌裂缝时效变形的GM(1,1)灰色预测模型,实现了利用前期监测数据预测衬砌裂缝后期发展。应用尖点突变模型的平衡条件建立了衬砌裂缝稳定性判据。构建了基于灰色突变理论的隧道衬砌裂缝诊断模型,并对2条典型衬砌裂缝进行了分析。分析结果表明:2条裂缝稳定性判据大于0,均未达到失稳条件;其实测宽度变化量小于0.2mm,宽度变化速率小于0.002mm·d-1,处于稳定状态,因此,该诊断模型可准确预测衬砌裂缝发展趋势。
[Abstract]:In order to use the monitoring data to judge the stability of tunnel lining crack Co., the application of wavelet transform to analyze the monitoring data of lining cracks, removing the high frequency part due to environmental changes and test error, the low frequency part preserved from the surrounding rock pressure changes produce, achieve decomposition. The aging deformation cracks using grey theory established the aging deformation of lining cracks GM (1,1) grey prediction model, the prediction of the late development of lining cracks using previous monitoring data. The equilibrium condition of application of cusp catastrophe model is established. The stability criterion of lining cracks of tunnel lining crack construction grey mutation diagnosis model based on the theory of 2 typical lining cracks are analyzed. Analysis results show that: 2 crack stability criterion is greater than 0, did not reach the instability condition; the measured width variation is less than 0.2mm, width change rate is less than 0.002m M / D-1 is in a stable state. Therefore, the diagnostic model can predict the development trend of lining cracks accurately.

【作者单位】：郑州大学土木工程学院;长安大学陕西省公路桥梁与隧道重点实验室;弗吉尼亚理工大学土木与环境工程系;
【分类号】：U456.31
【正文快照】： 0引言随着隧道运营时间的延长,由于受衬砌材料劣化、围岩压力变异、温度、湿度等因素的影响,隧道衬砌结构产生了不同程度的裂损现象。Inokuma等对日本公路隧道病害情况进行了统计分析,其中约60%的公路隧道存在各种病害现象,其中,衬砌开裂所占比例最大[1];吴江滨等分析结果表明

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