共查询到18条相似文献,搜索用时 78 毫秒
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以往建筑墙材以普通黏土砖为主,抹灰材料一般采用水泥砂浆或混合水泥砂浆。随着国家墙材的革新和建筑节能的要求,建筑大量应用贴面材料和涂料等装修,传统水泥砂浆或混合水泥砂浆等抹灰材料所暴露出的缺陷,如墙面空鼓、开裂、脱皮,引起墙体渗漏,在建筑中越来越显得突出。 相似文献
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近年来,随着建筑工程的进一步发展,因工程质量不达标引起的投诉也越来越多,本文作者就建筑墙体施工中常出现的一些质量通病问题,结合多年来的工程质量监督经验作以阐述,以提高工程质量,供同行参考。 相似文献
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《Structure and Infrastructure Engineering》2013,9(3):211-227
In this paper, a new approach for damage detection in beam-like structures is presented. The method can be used without the need for baseline modal parameters of the undamaged structure. Another advantage of the proposed method is that it can be implemented using a small number of sensors. In the proposed technique, the measured dynamic signals are decomposed into the wavelet packet decomposition (WPD) components, the power spectrum density (PSD) of each component is estimated and then a damage localisation indicator is computed to indicate the structural damage. The proposed method is firstly illustrated with a simulated beam and the identified damage is satisfactory with assumed damage. Then, the method is applied to a steel beam. The effect of damage location and the effects of wavelet type and the decomposition level are examined. The results show that the proposed method has great potential in crack detection of beam-like structures. 相似文献
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为了解决多幅显微图像的彩色融合问题,在传统的小波变换灰度图像融合算法的基础上,提出了一种改进融合算法,该方法在孢子显微图像的彩色融合处理中取得了较好的效果。 相似文献
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