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膨胀珍珠岩保温板粘结疲劳性能试验研究

作者：李明1，李安起1，2，刘哲1，3，张玉峰1

关键字：膨胀,珍珠,岩,保温,板,粘结,疲劳,性能,试验,

　
（1.山东建筑大学 土木工程学院，山东 济南  250101；
2.山东建筑大学工程鉴定加固研究院有限公司，山东 济南  250013；
3.山东省萌山钢构工程有限公司，山东 济宁  272000）
    摘要：分别对不同粘结面积、不同粘贴方式和不同疲劳荷载峰值下的保温板进行抗拉试验和疲劳试验。结果表明：在蒸压加气混凝土砌体基层中，保温板的疲劳次数与粘贴率呈正相关，与疲劳荷载峰值呈负相关；在相同粘贴率的情况下，十字粘贴法和条粘法明显优于点框法和点粘法。3种因素对疲劳次数的影响顺序为粘贴率＞疲劳荷载峰值＞粘贴方式。保温板在满粘法的条件下，砌体基层较混凝土基层上的疲劳性能要差。满粘法在混凝土基层上的疲劳性能最好，其次是粘贴率为80%的条粘法，其疲劳次数是混凝土基层上满粘法的91%。
    关键词：膨胀珍珠岩保温板；抗拉承载力；疲劳试验；疲劳荷载峰值；疲劳次数
    中图分类号：TU55+1.34        文献标识码：A        文章编号：1001-702X（2022）02-0109-06
 
Experimental study on the bond fatigue performance of expanded perlite insulation board 
LI Ming1，LI Anqi1，2，LIU Zhe1，3，ZHANG Yufeng1
（1.School of Civil Engineering，Shandong Jianzhu University，Jinan 250101，China；
2.Shandong Jianzhu University Engineering Appraisal and Strengthening Research Institute Co. Ltd.，Jinan 250013，China；
3.Shandong Mengshan Steel Structure Co. Ltd.，Jining 272000，China）
    Abstract：Flexural tests and fatigue tests were carried out on insulation boards with different bonding areas，different bonding means and different fatigue load peaks. The results show that the fatigue times of insulation board are positively correlated with the sticking rate，and negatively correlated with the peak value of fatigue load in autoclaved aerated concrete block base. The cross adhesion method and strip adhesion method are obviously superior to the point-frame bonding method and point bonding method under the same bonding rate. The effect of the three factors on fatigue times is in the order of bonding rate>fatigue load peak>adhesive methods. The fatigue performance of masonry base is worse than that of concrete base under the method of full bonding of insulation board. The full bonding method has the best fatigue performance on the concrete base layer，followed by the strip bonding method with an bonding areas of 80%. The fatigue times are 91% of the full adhesion method on the concrete base.
    Key words：expanded perlite insulation board，flexural bearing capacity，fatigue test，fatigue load peak，fatigue times