Wearability is one of important factors for the textile product quality. The wearability of bamboo pulp knitted fabrics was mainly discussed which were treated with chitosan and cupper ammonia solution. Tensile and bu...Wearability is one of important factors for the textile product quality. The wearability of bamboo pulp knitted fabrics was mainly discussed which were treated with chitosan and cupper ammonia solution. Tensile and bursting properties, abrasion resistance,drapability,air permeability,moisture-penetrability and warmth retention properties of fabrics were tested to investigate the changes. The results showed that chitosan pretreatment improved the tensile and bursting strengths,abrasion resistance and moisture penetrability,but decreased the drapability and air permeability.Copper ammonia solution treatments decreased the tensile and bursting strengths,abrasion resistance and air permeability,but increased the drapability, moisture penetrability and warmth retention properties.展开更多
竹结构房屋是一种典型的装配式建筑,节点是整个结构中最重要的组成部分,也是最薄弱的部位,节点的破坏会导致整个结构的倒塌,为此设计了一种由竹质构件和钢结构部分组成的装配式框架节点,为了解新型装配式节点的力学性能,制作两组共4个...竹结构房屋是一种典型的装配式建筑,节点是整个结构中最重要的组成部分,也是最薄弱的部位,节点的破坏会导致整个结构的倒塌,为此设计了一种由竹质构件和钢结构部分组成的装配式框架节点,为了解新型装配式节点的力学性能,制作两组共4个足尺模型试件,进行单调加载试验,分别调查节点梁翼缘钢板及柱套钢板厚度对节点力学性能的影响,得到了每个节点的荷载-位移曲线和弯矩-转角曲线,4个节点的极限转角为0.095,0.097,0.080和0.079 rad,4个试件的极限承载力分别为12.10,16.60,11.70和14.63 k N,并在试验的基础上,给出了节点的弯矩-转角曲线方程,4个试件的第一刚度分别为283,396,241和622 k N·m/rad。结果表明,增加节点梁翼缘钢板厚度既可以提高承载力,又可以增加节点的转动能力;增加柱套钢板的厚度可以提高节点的承载力和初始转动刚度。展开更多
文摘Wearability is one of important factors for the textile product quality. The wearability of bamboo pulp knitted fabrics was mainly discussed which were treated with chitosan and cupper ammonia solution. Tensile and bursting properties, abrasion resistance,drapability,air permeability,moisture-penetrability and warmth retention properties of fabrics were tested to investigate the changes. The results showed that chitosan pretreatment improved the tensile and bursting strengths,abrasion resistance and moisture penetrability,but decreased the drapability and air permeability.Copper ammonia solution treatments decreased the tensile and bursting strengths,abrasion resistance and air permeability,but increased the drapability, moisture penetrability and warmth retention properties.
文摘竹结构房屋是一种典型的装配式建筑,节点是整个结构中最重要的组成部分,也是最薄弱的部位,节点的破坏会导致整个结构的倒塌,为此设计了一种由竹质构件和钢结构部分组成的装配式框架节点,为了解新型装配式节点的力学性能,制作两组共4个足尺模型试件,进行单调加载试验,分别调查节点梁翼缘钢板及柱套钢板厚度对节点力学性能的影响,得到了每个节点的荷载-位移曲线和弯矩-转角曲线,4个节点的极限转角为0.095,0.097,0.080和0.079 rad,4个试件的极限承载力分别为12.10,16.60,11.70和14.63 k N,并在试验的基础上,给出了节点的弯矩-转角曲线方程,4个试件的第一刚度分别为283,396,241和622 k N·m/rad。结果表明,增加节点梁翼缘钢板厚度既可以提高承载力,又可以增加节点的转动能力;增加柱套钢板的厚度可以提高节点的承载力和初始转动刚度。
