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    中华视窗  
    你知道如何在房子加固前进行测试吗?
    作者:佚名  来源:网络  时间:2019-5-18 11:02:13

      1,砌体结构-砌块和灰泥砌成的墙,柱作为建筑物结构体系的主力军。其力学特性是:整体抗拉强度和抗剪强度很低,整体性较差。
      砌体结构的安全评价需要从两个方面进行检查。灌浆料厂家以高强度材料作为骨料,以水泥作为结合剂,辅以高流态、微膨胀、防离析等物质配制而成。它在施工现场加入一定量的水,搅拌均匀后即可使用。 灌浆料具有自流性好,快硬、早强、高强、无收缩、微膨胀;无毒、无害、不老化、对水质及周围环境无污染,自密性好、防锈等特点。混凝土裂缝处理一般有三种状态:静止裂缝,活动裂缝,正在发展的裂缝。混凝土裂缝处理方法的选择一般要考虑的因素:判断裂缝是活动的还是静止的;修补的主要目的是什么?是减少过多的渗漏、使裂缝处完全水;是否需要加固处理;裂缝产生的主要原因是什么;裂缝未来的变化(数值和方向)如何。一方面,首先对结构的基本情况进行了实地考察,因为早期的砌体建筑大多没有比较完整的设计文件。因此,在实地调查中,应特别注意砌体建筑的结构柱和梁的位置。二是区分承重墙、山墙和隔墙,仔细研究结构是否有使用功能的变化。另一方面,由于砌体结构是两种不同材料的建筑物,整体结构的完整性较差,因此,用现行的砌体强度测试方法很难准确地反映砌体强度的所有实际情况。目前的检测方法有:回弹法、平液压千斤顶加载法、切削法、原位轴向压缩法等。
      框架结构是由钢筋连接的梁和柱组成的结构,构成一个承载体系。即框架由梁和柱组成,抵抗使用过程中的水平荷载和竖向荷载。与砌体结构相比,框架结构的设计比较完整,应根据建筑场地的布置逐个进行验算,并特别注意梁柱的裂缝、节点加固面积和楼板裂缝。由于裂缝的存在会加速钢筋在钢筋混凝土结构中的腐蚀进入恶性循环,降低钢筋混凝土的耐久性,降低其使用寿命。目前的试验方法有:混凝土强度试验(回弹试验或钻孔法、构件尺寸、主配筋数、搅拌间距等。加强保护层和结构承载力等的再检查。建筑物的安全关系到人民生命财产的安全。建筑安全评价的目的是消除建筑物使用过程中存在的安全隐患,为今后建筑物的加固提供理论依据。只有真正了解哪些安全风险,才能有针对性的施工,从而保证结构的安全护航。


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