新型混合芯材复合材料夹芯板受弯性能试验研究  

Experimental study on bending performance of a new hybrid core composite sandwich panel

作　　者：张成利 樊峻江[3] 许兰兰[4] 胡夏闽[1] ZHANG Chengli;FAN Junjiang;XU Lanlan;HU Xiamin(College of Civil Engineering,Nanjing Tech University,Nanjing 211800,China;Lianyungang Open University,Lianyungang 222000,China;Jiangsu Provincial Department of Water Resources,Nanjing 210029,China;Department of Civil Engineering,Jiangsu Vocational College,Nanjing 210019,China)

机构地区：[1]南京工业大学土木工程学院,江苏南京211800 [2]连云港开放大学,江苏连云港222000 [3]江苏省水利厅,江苏南京210029 [4]江苏城市职业学院建工系,江苏南京210019

出　　处：《新型建筑材料》2019年第3期93-97,共5页New Building Materials

基　　金：江苏省水利厅科技项目(2013008)

摘　　要：研制一种真空成型工艺制作的基于轻木-泡沫混合芯材的复合材料夹芯板。采用四点弯曲力学性能试验研究复合材料夹芯板的受弯破坏形态以及芯材组分对复合材料夹芯板弯曲力学性能的影响。结果表明,复合材料夹芯板的破坏模式不同于花旗木板,表现为GFRP腹板的剪切破坏。复合材料夹芯板的抗弯承载力及刚度大于花旗木板;夹芯板提高芯材和GFRP的利用效率;随着混合芯材夹芯板芯材成分比例的不同,峰值挠度基本相同,但随着花旗木芯材比例的减小,峰值承载力和抗弯刚度降低。A new kind of the composite sandwich panel with the balsa-foam hybrid core fabricated by vacuum forming is proposed. In order to study the bending failure mode of composite sandwich panel and the effect of core material composition on the mechanical properties of composite sandwich panel,the mechanical properties of composite sandwich panel were tested by four-point bending test. The results show that:the failure mode of core plate which is the shearing failure of GFRP web is different from that of Douglas fir sheet. The flexural capacity and rigidity of the composite sandwich panel are greater than that of the Douglas fir sheet. The sandwich panel improves the utilization efficiency of the core material and the GFRP material. With the different ratio of the core material of the mixed core sandwich panel,the peak deflection of the composite sandwich panel is basically the same,however,with the decreases of the Douglas fir sheet proportion,the peak load capacity and bending rigidity are reduced.

关 键 词：轻木-泡沫混合芯材 夹芯板 破坏形态 承载力 

分 类 号：TU528.72[建筑科学—建筑技术科学]