建筑_悬挑式_脚手架_施工_搭设,脚手架在作业中能起到安全防护的作用，有落地式脚手架和悬挑式脚手架。当在高层建筑施工时，落地式脚手架已经不能满足施工要求了，这时就要用到悬挑式脚手架了。
脚手架在建筑施工的主体或装修工程作业中起到安全防护的作用，一般分为落地式脚手架和悬挑式脚手架。当（超）高层建筑施工时，落地式脚手架已不能满足建筑施工要求，这时我们就需要用到悬挑式脚手架了。
悬挑式脚手架与落地式脚手架的区别主要是，悬挑式脚手架有附着于建筑结构的刚性悬挑梁，架体结构卸荷其上。一般适用于钢筋混凝土结构、钢结构高层或超高层。#民用建筑#
悬挑式脚手架施工搭设工艺流程：
1、技术交底、现场施工准备、放线定位测量；
2、悬挑层预埋锚环；
3、悬挑架底部支撑体系结构安装；
4、竖立杆、将纵向扫地杆与立杆扣接；
5、安装横向扫地杆、安装纵向水平杆、安装横向水平；
6、安装连墙件、安装剪刀撑；
7、扎色带及张挂安全网、作业层铺脚手板和挡脚板、设置警示标志；
8、组织验收、合格后方可投入使用。
悬挑式脚手架在搭设时应注意，每段搭设高度不得大于24m，剪刀撑、连墙件应同步搭设，悬挑架底必须张挂安全平网防护，外架应高出作业楼层1.5m以上。悬挑钢梁型号及锚固件、悬挑钢梁悬挑长度应按设计确定。材料的抗弯强度、抗剪强度及架体稳定性、扰度必须经过计算设计。
悬挑钢梁固定端长度必须超过悬挑长度的1.25倍，支承点应设置在施工层结构梁上，不得设置在外伸阳台上或悬挑板上，否则应采取加固措施。
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井盖的类型有哪些？
井盖类型非常的多，像是上水井盖、污水井盖、雨水井盖、雨水箅子、电力井盖、路灯井盖、通信井盖、电信井盖、热力井盖、燃气井盖、电缆井盖、化粪池井盖等等。不同的井盖有不同的功能，上水井盖是供水用的井盖，下水井盖则主要是用来排除掉路面上的积水的。像湖南甄金井盖的类型，有不锈钢井盖、铸铁井盖、复合树脂井盖等类型，铸铁井盖中，球墨铸铁圆井和铸铁沟盖板使用的较多。因为路面上的车辆多，而球墨铸铁井盖的承压能力比较好，公路上使用的多的就是这类型井盖了，而且井盖的类型也多。
There are many types of well covers, such as water supply well covers, sewage well covers, rainwater well covers, rainwater grates, power well covers, street lamp well covers, communication well covers, telecommunications well covers, thermal well covers, gas well covers, cable well covers, septic tank well covers, and so on. Different manhole covers have different functions. The upper manhole cover is used for water supply, while the lower manhole cover is mainly used to remove water from the road surface. There are various types of manhole covers such as stainless steel manhole covers, cast iron manhole covers, and composite resin manhole covers. Among the cast iron manhole covers, ductile iron round wells and cast iron trench covers are more commonly used. “Because there are many vehicles on the road, and the pressure bearing capacity of ductile iron manhole covers is relatively good, this type of manhole cover is commonly used on highways, and there are many types of manhole covers.”
什么球墨铸铁井盖
球墨铸铁井盖是球墨铸铁产品的一种，球墨铸铁通过球化和孕育处理得到球状石墨，有效地提高了铸铁的机械性能，特别是提高了塑性和韧性，从而得到比碳钢还高的强度。球墨铸铁是20世纪五十年代发展起来的一种高强度铸铁材料，其综合性能接近于钢，正是基于其优异的性能，已成功地用于铸造一些受力复杂，强度、韧性、耐磨性要求较高的零件。球墨铸铁已迅速发展为仅次于灰铸铁的、应用十分广泛的铸铁材料。所谓“以铁代钢”，主要指球墨铸铁。
Ductile iron manhole covers are a type of ductile iron products. Spheroidal graphite is obtained from ductile iron through spheroidization and inoculation, effectively improving the mechanical properties of cast iron, especially its plasticity and toughness, resulting in higher strength than carbon steel. Ductile iron is a high-strength cast iron material developed in the 1950s. Its comprehensive performance is similar to that of steel. It is precisely based on its excellent performance that it has been successfully used to cast some parts with complex stress and high requirements for strength, toughness, and wear resistance. Ductile iron has rapidly developed into a widely used cast iron material, second only to gray iron. The so-called “replacing steel with iron” mainly refers to ductile iron.
什么是不锈钢井盖？
什么是高分子井盖？
“高分子井盖是采用不饱和聚脂树脂为基体的纤维增强热固性复合材料,用压制成型技术制成,是一种新型的环保型井盖。”
绿色环保：不生锈、绿色环保、节约不可再生资源。
防盗功能强：高分子井盖系复合材料具有不可再生性，不能回收利用，因而具有主动免被盗功能。
平衡能力好、承压力强：盖座咬合精度高，配合性好提高了道路的通行能力和行车舒适度。
日常维护简便、费用低：重量轻、防盗窃、寿命长、易识别，便于日常的开启和维护，有效降低了养护的劳动强度和更新费用的支出。