CN115257119A - 一种轻质抗冲击保温夹芯结构及连接装置 - Google Patents

一种轻质抗冲击保温夹芯结构及连接装置 Download PDF

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CN115257119A
CN115257119A CN202210952420.4A CN202210952420A CN115257119A CN 115257119 A CN115257119 A CN 115257119A CN 202210952420 A CN202210952420 A CN 202210952420A CN 115257119 A CN115257119 A CN 115257119A
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composite material
sandwich structure
fiber
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张中威
宋春明
林渊
谭仪忠
熊自明
孙慜倩
吴健安
李治中
王明洋
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Army Engineering University of PLA
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Abstract

一种轻质抗冲击保温夹芯结构及连接装置,涉及结构工程中新材料、新结构的技术领域。包括至少两层纤维金属板层,两层纤维金属板层之间夹持两层间隔织物增强复合材料层,两层间隔织物增强复合材料层之间夹持聚氨酯泡沫材料层;纤维金属板层与间隔织物增强复合材料层之间布置有树脂胶层;聚氨酯泡沫材料层中填充有连接纱线。本发明的夹芯结构具有高冲击抗力、高承载力、质量轻、保温效果好,模块化程度高、连接快速高效、保温效果好的优点。

Description

一种轻质抗冲击保温夹芯结构及连接装置
技术领域
本发明涉及结构工程中新材料、新结构的技术领域,尤其涉及新型夹芯结构的技术领域。
背景技术
夹芯结构在建筑结构保温隔热、防火、降噪等方面有较多应用,其中以金属面夹芯板应用最为广泛。然而金属面夹芯板面-芯结合性能较差,面-芯脱粘问题是制约其承载刚度、抗冲击等方面性能的关键因素。另一方面,金属面夹芯板的自重仍然较大,对于拼装式结构的快速装配撤收造成较大影响。纤维增强复合材料夹芯板近些年也逐渐受到关注,复合材料(FRP)的高比强度与比刚度能够较为明显地提升夹芯结构整体力学性能,但FRP普遍呈现弹脆性特征,对于较为普遍的低速冲击十分敏感,且易形成不可视损伤,损伤检测难度大,对于结构的使用安全性造成影响。鉴于此,本发明提出一种耐冲击、保温隔热效果好的新型纤维金属层板-间隔织物增强复合材料夹芯结构,并给出结构之间的一种快速连接方法,对于开发适用于高原高寒地区使用的新型结构功能一体化结构件具有重要意义。
发明内容
本发明目的是提供一种轻质抗冲击保温夹芯结构及连接装置,具有高冲击抗力、高承载力、质量轻、保温效果好。
一种轻质抗冲击保温夹芯结构,包括至少两层纤维金属板层,两层纤维金属板层之间夹持两层间隔织物增强复合材料层,两层间隔织物增强复合材料层之间夹持聚氨酯泡沫材料层;纤维金属板层与间隔织物增强复合材料层之间布置有树脂胶层;聚氨酯泡沫材料层中填充有连接纱线。
优选的是,本发明的纤维金属板层为金属薄板与FRP材料交替层合堆叠;金属薄板的材料包括但不限于铝合金、高强钢;FRP可选材料包括但不限于单向或机织玻璃纤维复合材料、芳纶纤维复合材料、碳纤维复合材料、玄武岩纤维复合材料、超高分子量聚乙烯纤维复合材料;
优选的是,本发明的金属薄板与FRP材料交替层合堆叠结构包括但不限于金属/FRP/金属、金属/FRP/金属/FRP/金属。
优选的是,本发明的间隔织物增强复合材料包括但不限于玻璃纤维间隔织物、芳纶纤维间隔织物、碳纤维间隔织物、玄武岩纤维间隔织物。
优选的是,本发明的夹芯结构长度方向的两端设置相互匹配的封边模块,封边模块呈横U字型,其中一个封边模块的纵向位置自上而下以此布置顶紧凸块和预制槽,另一个封边模块的纵向位置自上而下以此布置预制凹槽和抗拉接头;顶紧凸块与预制凹槽相匹配,预制槽与抗拉接头相匹配。
优选的是,本发明的封边模块为玻璃纤维/聚氨酯复合材料型材。
优选的是,本发明的预制凹槽内设置橡胶密封圈。
一种连接装置,所述连接装置为四边形,其中一组相对的边上分别布置有顶紧凸块和预制槽,另一组相对的边上分别布置有预制凹槽和抗拉接头。
有益效果:本发明采用上述技术方案,与现有技术相比:
1、本发明提供的新型夹芯结构具有高冲击抗力、高承载力、质量轻、保温效果好的优点。
2、本发明提供的夹芯结构连接装置具有模块化程度高、连接快速高效、保温效果好的优点。
3、本发明的纤维金属层合面板、间隔织物复合材料、玻璃纤维/聚氨酯复合材料型材均为商业化产品,经济性优势明显。具体可应用于拼装式板房墙面、地板结构,建筑防护结构、船体、车体防撞结构、高承载浮式结构,也可应用于高原高寒地区快速组装拼装式板房、高承载浮箱、浮体结构等领域。
附图说明
图1是本发明夹芯结构的一种结构示意图。
图2是本发明夹芯结构的一种实施例。
图3是本发明夹芯结构的另一种实施例。
图4是本发明封边模块的结构示意图。
图5是本发明组装有封边模块的夹芯结构示意图。
图6是本发明连接装置的示意图。
图7是不带有连接装置的组装结构示意图。
图8是带有连接装置的组装结构示意图。
其中:11、金属薄板,12、FRP材料层,1、间隔织物增强复合材料层,2、聚氨酯泡沫材料层,3、树脂胶层,4、连接纱线,5、顶紧凸块,6、预制槽,7、预制凹槽,8、抗拉接头,9、橡胶密封圈。
具体实施方式
下面结合附图对本发明的技术方案进行详细说明:
如图1所示,一种轻质抗冲击保温夹芯结构,包括至少两层纤维金属板层,两层纤维金属板层之间夹持两层间隔织物增强复合材料层1,两层间隔织物增强复合材料层1之间夹持聚氨酯泡沫材料层2;纤维金属板层与间隔织物增强复合材料层1之间布置有树脂胶层3;聚氨酯泡沫材料层中填充有连接纱线4。
进一步的,本发明的纤维金属板层为金属薄板11与FRP材料层12交替层合堆叠;金属薄板的材料包括但不限于铝合金、高强钢;FRP可选材料包括但不限于单向或机织玻璃纤维复合材料、芳纶纤维复合材料、碳纤维复合材料、玄武岩纤维复合材料、超高分子量聚乙烯纤维复合材料;
进一步的,本发明的金属薄板与FRP材料层的交替层合堆叠结构包括但不限于金属/FRP/金属、金属/FRP/金属/FRP/金属。
进一步的,本发明的间隔织物增强复合材料包括但不限于玻璃纤维间隔织物、芳纶纤维间隔织物、碳纤维间隔织物、玄武岩纤维间隔织物。
进一步的,本发明的间隔织物增强复合材料包括但不限于玻璃纤维间隔织物、芳纶纤维间隔织物、碳纤维间隔织物、玄武岩纤维间隔织物。
进一步的,本发明的夹芯结构长度方向的两端设置相互匹配的封边模块,封边模块呈横U字型,其中一个封边模块的纵向位置自上而下以此布置顶紧凸块5和预制槽6,另一个封边模块的纵向位置自上而下以此布置预制凹槽7和抗拉接头8;顶紧凸块5与预制凹槽7相匹配,预制槽6与抗拉接头8相匹配。
进一步的,本发明的封边模块为玻璃纤维/聚氨酯复合材料型材。
进一步的,本发明的预制凹槽5内设置橡胶密封圈9。
如图6所示,一种连接装置,连接装置为四边形,其中一组相对的边上分别布置顶紧凸块5和预制槽6,另一组相对的边上分别布置预制凹槽7和抗拉接头8。
本发明的夹芯结构由以下部分组成:
1、面板部分:夹芯结构上下面板部分为纤维金属层板材料(Fiber metallamiantes, FMLs),其结构特点为金属薄板与FRP材料交替层合堆叠,金属薄板可选材料包括但不限于铝合金、高强钢等;FRP可选材料包括但不限于单向或机织玻璃纤维复合材料、芳纶纤维复合材料、碳纤维复合材料、玄武岩纤维复合材料、超高分子量聚乙烯纤维复合材料等;金属薄板与FRP材料堆叠结构包括但不限于金属/FRP/金属、金属/FRP/金属/FRP/金属等。
FMLs作为夹芯结构面板的优势主要有两个方面:一方面,FMLs在具有轻质高强特性的同时,其抗冲击性能较之规金属材料和FRP材料的优势十分明显,可为夹芯结构提供抗外部冲击的第一层屏障;另一方面,FRP材料的导热系数要明显低于金属材料,用FMLs代替金属材料面板,其中的FRP层能够形成阻断热量耗散的第一层屏障。
2、芯材部分:夹芯结构的芯材部分主要包括间隔织物增强复合材料层与聚氨酯泡沫材料层。间隔织物包括但不限于玻璃纤维间隔织物、芳纶纤维间隔织物、碳纤维间隔织物、玄武岩纤维间隔织物等。运用间隔织物复合材料的优势有三个方面:1)间隔织物复合材料的表层部分能够通过二次固化工艺,采用树脂胶层与FMLs面板形成可靠整体,有效加强面板的承载性能;2)间隔织物复合材料表层形成了阻断热量耗散的第二层屏障;3)间隔织物复合材料的厚度向连接纱能够有效缓解聚氨酯泡沫与表面层间的脱粘分层现象,极大提升结构的抗弯刚度,增强了结构抗爆、抗冲击性能。
聚氨酯泡沫是目前所有保温材料中导热系数最低的,其主要功能在于提供阻断热量耗散的关键屏障,此外聚氨酯泡沫与间隔织物复合材料厚度向连接纱之间能够形成可靠相互作用,与常规单一泡沫芯材相比,其承载刚度将大幅提升。
本发明提出的新型夹芯结构,具有很强的可设计性,可根据不同的承载与保温要求,灵活设计其构型,包括:FMLs面板的叠层结构、FMLs面板中FRP的铺层角度、FMLs面板中金属与FRP层的厚度比、间隔织物复合材料表层厚度、厚度向连接纱的直径以及纱线的间距。此外,还可对间隔织物复合材料与聚氨酯泡沫组成的芯材采用多层叠合的构型,以满足建筑结构墙面等部位较大厚度的建设要求。
本发明图1展示的夹芯结构,其面板部分为2层金属薄板和1层FRP,芯材部分为2层间隔织物增强复合材料层与1层聚氨酯泡沫材料层;图2展示的夹芯结构,其面板部分为3层金属薄板和2层FRP层,芯材部分为2层间隔织物增强复合材料层与1层聚氨酯泡沫材料层;图3展示的夹芯结构,其面板部分为3层金属薄板和2层FRP层,芯材部分为3层间隔织物增强复合材料层与2层聚氨酯泡沫材料层。
用于夹芯面板的连接模块
对于高原高寒地区拼装式板房结构来说,要尽可能减少构件之间金属连接件的使用,以切断热量传递的热桥。同时,为了便于面板间的快速安装,需要尽可能的降低连接机构的复杂性。鉴于此,本发明设计了专门用于快速构筑夹芯结构板房的封边模块。
图4为夹芯面板的两端封边模块,可根据具体部位的拼装要求灵活配置在夹芯板两端。图5给出了封边模块与夹芯板之间的连接结构示意图。纤维金属层合面板在夹芯板的两端部位预留出封边空间,封边模块与纤维金属层合面板、间隔织物表层、以及聚氨酯泡沫芯层之间通过树脂结构胶二次固化连接,形成模块化夹芯板。其优点在于:1.封边模块采用玻璃纤维/聚氨酯复合材料型材,导热率低;2.结构完整性好,不存在开孔等明显削弱材料强度的部位,结构力学性能能够得到保障。3.封边模块上预制有插接式连接机构,夹芯板模块间连接方便。
图6为夹芯侧板与夹芯底板、顶板的连接装置,其优点在于:1.连接结构与夹芯板模块连接机构吻合,无需增加新的过渡连接装置,结构完整性好,力学性能能够得到有效保障;2.过渡模块采用内部填充聚氨酯泡沫的玻璃纤维/聚氨酯复合材料方管型材,隔热效果优良。
多块夹芯结构间的组装
图7、图8 分别给出了夹芯板模块之间的组装示意图,以及侧板与底板通过过渡模块的安装示意图。各模块之间通过简单插接即可形成有效连接。本发明中的连接机构的优点分析如下:
本发明中,各模块之间的主要连接机构为顶紧凸块与抗拉接头两部分。在正常使用过程中,底板主要承受室内人员、物品等荷载的作用,顶板主要承受其自重、积雪等荷载的作用,侧板主要承受外部风荷载。从受力角度分析,夹芯板作为外部围护与承载结构主要承受近似弯曲荷载的作用,因此,可通过灵活配置封边型材与夹芯板的组合方向,将顶紧凸块布置在受压一侧,将抗拉接头布置在受拉一侧,构件彼此之间的连接稳定可靠。此外,在封边模块与过度模块的预制凹槽内均预先设置了密封橡胶。当顶紧凸块在凹槽内压紧时,密封橡胶便阻断了热量从连接机构缝隙中的通路,因而能够形成有效密封。
本发明提供的新型夹芯结构具有高冲击抗力、高承载力、质量轻、保温效果好,模块化程度高、连接快速高效、保温效果好的优点。本发明所提到的纤维金属层合面板、间隔织物复合材料、玻璃纤维/聚氨酯复合材料型材均为商业化产品,经济性优势明显。

Claims (8)

1.一种轻质抗冲击保温夹芯结构,其特征在于包括至少两层纤维金属层板,两层纤维金属层板之间夹持两层间隔织物增强复合材料层,两层间隔织物增强复合材料层之间夹持聚氨酯泡沫材料层;纤维金属层板与间隔织物增强复合材料层之间布置有树脂胶层;聚氨酯泡沫材料层中填充有连接纱线。
2.根据权利要求1所述的轻质抗冲击保温夹芯结构,其特征在于上述纤维金属层板为金属薄板与FRP材料交替层合堆叠;金属薄板的材料包括但不限于铝合金、高强钢;FRP可选材料包括但不限于单向或机织玻璃纤维复合材料、芳纶纤维复合材料、碳纤维复合材料、玄武岩纤维复合材料、超高分子量聚乙烯纤维复合材料;
根据权利要求2所述的轻质抗冲击保温夹芯结构,其特征在于上述金属薄板与FRP材料交替层合堆叠结构包括但不限于金属/FRP/金属、金属/FRP/金属/FRP/金属。
3.根据权利要求1所述的轻质抗冲击保温夹芯结构,其特征在于上述间隔织物增强复合材料包括但不限于玻璃纤维间隔织物、芳纶纤维间隔织物、碳纤维间隔织物、玄武岩纤维间隔织物。
4.根据权利要求1所述的轻质抗冲击保温夹芯结构,其特征在于上述位于间隔织物增强复合材料层之间的聚氨酯泡沫材料层为若干层,相邻两层聚氨酯泡沫材料层之间设置间隔织物增强复合材料层。
5.根据权利要求1所述的轻质抗冲击保温夹芯结构,其特征在于上述夹芯结构长度方向的两端设置相互匹配的封边模块,封边模块呈横U字型,其中一个封边模块的纵向位置自上而下以此布置顶紧凸块和预制槽,另一个封边模块的纵向位置自上而下以此布置预制凹槽和抗拉接头;顶紧凸块与预制凹槽相匹配,预制槽与抗拉接头相匹配。
6.根据权利要求6所述的轻质抗冲击保温夹芯结构,其特征在于上述封边模块为玻璃纤维/聚氨酯复合材料型材。
7.根据权利要求6所述的轻质抗冲击保温夹芯结构,其特征在于上述预制凹槽内设置橡胶密封圈。
8.一种连接装置,其特征在于所述连接装置为四边形,其中一组相对的边上分别布置权利要求6所述的顶紧凸块和预制槽,另一组相对的边上分别布置权利要求6所述的预制凹槽和抗拉接头。
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