重庆现浇-现浇阁楼是什么What is a cast-in-situ atti
编辑：admin 日期：2020-04-13 15:21 / 人气：
With the progress of science, our society is making progress, so there are many new things in our society. And it is because of our constant progress, our constant acceptance of new things, that our society continues to progress. So do you know about the cast-in-place attic? Want to know what a cast-in-situ attic is? In fact, people who do not know cast-in-place attic should want to know what is cast-in-place attic, this article for you to introduce what is cast-in-place attic, if you are interested, you can see!
重庆现浇阁楼—现浇阁楼简介
在国内很多别墅、顶层坡屋顶复式楼、LOFT的室内空高挑高比较高，一般是4.5米至6米不等，业主为了更合理和有效的利用空间，可以考虑自己建阁楼。
重庆现浇阁楼—浇阁楼的施工工艺
遵循以下几个原则
1、边角固定宜采用植筋法，不要轻易地破坏主梁。
2、钢筋一定要采用国标罗纹钢并且两层或四层捆扎成网。
3、选择合格的水泥产品和河沙（水泥425# 600标号， 河沙，山石， 比例为1：2：3 搅拌均匀，并用专用震动仪震动。采用植筋）。
4、楼板后期养护要做足。
5、为安全计，必要时，宜在边角做用槽钢支撑以防万一。这些槽钢可以通过设计造型屏蔽掉。
6、跨度过大时，一定要请专业的结构工程师进行计算，避免过重造成危险。必要时需要增加大梁。
7、此属专业程度高的项目，一定要找专业的建筑施工队伍。
8、配筋要合理。混凝土楼板配筋只要设计是合理的，即使发生重大变化时能起到预警作用。我们把楼板配筋分适筋、少筋、超筋。适筋类:就是设计的钢筋数量在一个合理的范围内.这样的楼板，一旦楼板快要破坏时，会有预示:裂缝出现。少筋就是钢筋放的少了，这样楼板的承重能力很差；超筋是钢筋放的多出了规范的范围，这种情况就会出现问题时楼板不能及时反映破坏情况.所以并不是钢筋越多越好。
9、现浇楼板拆模时间要把握好。混凝土的强度在浇筑完前3天上升最快，从0%可以达到50%以上，7天时可以达到95%左右，14天可以到达110%以上，之后仍会以很慢的速度增强。
现浇阁楼—现浇阁楼楼板强度
跨度在8米以上的混凝土强度为≥100%，8米及8米以下≥75%方可拆模；砼强度≥1.2MPa时楼面方可上人及施工。（一般在浇灌后24小时强度可达≥1.2MPa，春、夏、秋正常养护下7~9天；冬天在正常养护下10~15天能够拆模）。
Cast-in-place attic - introduction to cast-in-place attic
In domestic a lot of villa, the indoor air of penthouse of top slope roof duplex building, LOFT is tall carry tall compare tall, it is 4.5 meters to 6 meters commonly differ, owner is in order to more reasonable and effective use a space, can consider oneself to build attic.
Cast-in-place attic - the construction technology of cast-in-place attic
Follow these principles
1. The method of planting ribs should be adopted to fix the edges and corners. Don't destroy the main beam easily.
2, the reinforcement must use national standard rib steel and two or four layers into a network.
3, select qualified cement products and river sand (cement 425# 600, river sand, stone, ratio of 1:2:3 mixing evenly, and use a special vibration meter vibration. Use of plant-bar).
4. The floor should be fully maintained in the later period.
5, for safety, when necessary, should be in the corner with channel steel support in case. These channels can be shielded by design.
6, when the span is too large, must ask the professional structural engineer to calculate, to avoid the danger caused by overweight. Girders shall be added when necessary.
7, this is a high degree of professional projects, must find a professional construction team.
8, the reinforcement should be reasonable. As long as the design of concrete floor reinforcement is reasonable, it can play an early warning role even when major changes occur. We divided the floor reinforcement into proper reinforcement, less reinforcement and extra reinforcement. Suitable reinforcement: the number of steel bars designed is within a reasonable range. Such a floor, once the floor is about to be damaged, there will be a sign: cracks appear. Less reinforcement is less steel, so the floor bearing capacity is very poor; The reason for the extra reinforcement is that the steel bar is put beyond the scope of the specification, and the floor cannot timely reflect the damage when there is a problem. Therefore, it is not that the more steel bars, the better.
9, cast-in-place floor mold removal time to grasp. The strength of concrete increases the fastest in the 3 days before the completion of pouring, from 0% to more than 50%, from 7 days to about 95%, from 14 days to more than 110%, after which it will still increase at a slow speed.
Cast-in-place attic - floor strength of cast-in-place attic
The strength of concrete with the span of more than 8 meters is ≥100%, and the mold can only be removed if the span of 8 meters and less than 8 meters are ≥75%. Only when the concrete strength ≥ 1.2mpa can the floor be occupied and constructed. (generally, the strength can reach ≥ 1.2mpa 24 hours after watering, and the normal curing in spring, summer and autumn lasts for 7-9 days; In winter under the normal maintenance of 10 to 15 days can be removed).
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