1、开口楼承板

1. Opening floor support plate

80年代末，一些欧美的板型开始进入大陆，这个当口是深圳的建设，如赛格广场、地王大厦等等，均采用美国的2W、3W等板型，即后来的YXB51-305-915开口压型钢板、YXB76-305-915开口压型钢板，这些事参考了美国的钢承板设计及加工标准，产品的成品也是进口而来，对于当时的建筑界来说也算个新鲜事物。

In the late 1980s, some plate types from Europe and the United States began to enter the Chinese Mainland. At this time, the construction of Shenzhen, such as SEG Plaza, Diwang Building, etc., all used American 2W, 3W and other plate types, namely later YXB51-305-915 open profiled steel plate, YXB76-305-915 open profiled steel plate. These things referred to the American steel bearing plate design and processing standards, and the finished products were also imported, For the Chinese construction industry at that time, it was also considered a novelty.

2、闭口楼承板

2. Closed floor support plate

考虑到一代楼承板存在问题，工程师改进了普通钢楼承板，在镀锌钢板上增加剪力槽，通过混凝土的握裹作用，形成两者的共同作用。由板肋提供竖向刚度，通过板肋形状 与抗剪槽提供水平抗剪承载力，必须保证楼承板与混凝土紧密连接，通过调整厚度以调整楼承板刚度，使压型钢板在使用过程中参与楼板的受力，代替下部受力钢 筋，从而节省了混凝土中钢筋的用量。这种组合压型钢板有特殊齿槽或压痕，提高了与混凝土的粘结力，可代替部分板底受力钢筋，一定程度上节省了工期及劳动力成本。闭口板，目前仍被大量采用，并且已被规范和图集所采纳，而且也被众多设计师所推崇。

Considering the problems with the first generation of floor support plates, engineers have improved ordinary steel floor support plates by adding shear grooves on galvanized steel plates, forming a joint effect between the two through the gripping effect of concrete. The vertical stiffness is provided by the ribs, and the horizontal shear bearing capacity is provided by the shape of the ribs and the shear groove. It is necessary to ensure that the floor support plate is tightly connected to the concrete. The stiffness of the floor support plate is adjusted by adjusting the thickness, so that the profiled steel plate participates in the stress of the floor during use, replacing the lower load-bearing steel bars, thereby saving the amount of steel bars in the concrete. This combination of profiled steel plates has special grooves or indentations, which improves the bonding force with concrete and can replace some load-bearing steel bars at the bottom of the plate, saving construction period and labor costs to a certain extent. The closed panel is still widely used and has been adopted by standards and atlases, and is also highly praised by many designers.

3、钢筋桁架楼承板

3. Steel truss floor support plate

为解决代与第二代钢承板存在的诸多缺点，工程师开发出第三代钢筋桁架楼承板。钢筋桁架楼承板属于第三代钢结构配套楼承板，其构造与普通的非组合压型钢板及组合压型钢板的板型有较大区别，是将混凝土楼板中的受力钢筋在工厂中加工成钢筋桁架，然后再与压型钢板电阻点焊为一体的钢楼承板产品。钢筋桁架采用高频电阻点焊组合，形成结构稳定的三角桁架，底部压型钢板板肋只有2毫米，几乎等于平板。

To address the many shortcomings of the first and second generation steel bearing plates, engineers have developed the third generation steel truss floor bearing plates. The steel bar truss floor support plate belongs to the third generation of steel structure supporting floor support plate. Its structure is significantly different from the plate type of ordinary non composite profiled steel plates and composite profiled steel plates. It is a steel floor support plate product that processes the load-bearing steel bars in the concrete floor slab into a steel bar truss in the factory, and then integrates it with the electrical resistance spot welding of the profiled steel plates. The steel bar truss adopts high-frequency resistance spot welding combination to form a structurally stable triangular truss. The bottom profiled steel plate rib is only 2mm, almost equal to a flat plate.

作为新一代钢楼承板，其受力模式更为合理，不再单纯依靠钢板提供施工阶段强度及刚度。其施工阶段强度和刚度由受力更为合理的钢筋桁架提供。在使用阶段，由钢筋桁架和混凝土 一起共同工作。镀锌底板仅作施工阶段模板作用，不考虑结构受力，但在正常的使用情况下，钢板的存在增加了楼板的刚度，改善了楼板下部混凝土的受力性能。

As a new generation of steel floor support plates, their stress mode is more reasonable, and they no longer rely solely on steel plates to provide strength and stiffness during construction. The strength and stiffness during the construction phase are provided by a steel truss with more reasonable stress. During the usage phase, the steel truss and concrete work together. The galvanized bottom plate is only used as a template during the construction phase, without considering the structural stress. However, under normal usage, the presence of steel plates increases the stiffness of the floor slab and improves the stress performance of the concrete below the floor slab.