上海金桥现代产业服务园Ⅱ期地铁板块项目后补埋件锚板计算模拟分析
2019-08-19薛兵
薛兵



【摘 要】后补埋件是幕墙结构中常用的埋件形式,其主要是针对前期结构漏埋和错埋位置的一种补救措施,也是幕墙受力体系中极为重要的环节。论文对上海金桥现代产业服务园(Ⅱ期)地铁板块项目中的后补埋件的锚板进行受力分析,采用ANSYS有限元软件对埋板进行实体建模,通过计算分析发现,当埋板承受较大荷载时,仅按规范中对锚板构造要求配置其厚度是不一定满足受力要求的,需要对锚板进行具体的受力分析。
【Abstract】 The post-embedded components are the commonly used embedded components in the curtain wall structure. They are mainly used as a remedial measure for the leakage and burying position of the pre-structure, and also an extremely important part of the curtain wall stress system. The paper analyzes the stress of the anchor plate of post-embedding parts for the metro plate project of Shanghai Jinqiao Modern Industrial Service Park (Phase II), and uses ANSYS finite element software to carry out the solid modeling of embedded plate. Through calculation and analysis, it is found that when the buried slab is subjected to large loads, the thickness of the anchor slab only according to the structural requirements of the code is not necessarily enough to meet the requirements of the force, so it is necessary to carry out specific stress analysis of the anchor slab.
【关键词】后补埋件;锚板;ANSYS
【Keywords】 post-embedded components; anchor plate; ANSYS
【中图分类号】TU3 【文献标志码】A 【文章编号】1673-1069(2019)06-0137-03
1 引言
《混凝土结构后锚固技术规程》中对锚栓的受力计算有着详尽的规定,但是对于后补埋件的锚板厚度问题规定甚少,其中对锚栓计算的假定条件就是要保证锚板平面外的刚度足够大,使其与混凝土结合面受力变形之后仍保持平面,即其弯曲变形可以忽略不计。基于以上要求,规范中对于锚板厚度做出了相应要求,锚板厚度应按照现行国家标准GB 50017《钢结构设计标准》进行设计,且不应小于锚栓直径的0.6倍;受拉和受弯锚板的厚度尚宜大于锚栓间距的1/8[1]。根据以上要求,对于普通的玻璃幕墙铝板幕墙等常规重量幕墙系统,锚板受力一般是可以满足其强度及刚度要求的,但是对于一些大跨度和类似石材幕墙等自重面荷载较大的幕墙系统,尤其当幕墙结构支撑外挑较大的情况下,仅仅满足规范的构造要求,是存在一定安全隐患的,需要结构工程师的计算校核。……
