行业资讯 所在位置- 首页-新闻中心-行业资讯钢结构几种型钢特性分析


发布时间:2024-02-13 来源:http://www.jnhxtcg.com/


1、 Floor support plate


Building support plate, also known as steel support plate or building profiled steel plate, is formed by rolling and cold bending galvanized steel plate. Its cross-section is V-shaped, U-shaped, trapezoidal or similar waveforms, mainly used as permanent formwork, and can also be selected for other purposes.


During the usage stage, the floor support plate serves as the tensile steel bar for the concrete floor slab, which also improves the stiffness of the floor slab and saves the amount of steel and concrete used.


The surface embossing of the profiled panel creates a large bonding force between the floor slab and the concrete, forming a whole between the two. Combined with stiffeners, the floor slab system has high-strength bearing capacity.


The combination plate of profiled steel plates (floor support plate, steel support plate) is a very reasonable structural form. It can fully utilize the advantages of good tensile and compressive properties of steel and concrete according to the position and characteristics of its constituent components, and has good seismic and construction performance. This structure is currently widely used in multi story and high-rise buildings both domestically and internationally.


Comparison between floor slab and ordinary reinforced concrete floor slab:

1. 楼承板可作为现浇混凝土的永久模版,省掉了施工中安装和拆除模板的工序;

1. The floor slab can serve as a permanent template for cast-in-place concrete, eliminating the process of installing and removing templates during construction;

2. 楼承板安装好之后可以作为施工平台使用,同时由于不必使用临时支撑,也不影响下一层施工平面的工作;

2. After the installation of the floor support plate, it can be used as a construction platform. At the same time, it does not require temporary support and does not affect the work of the next floor construction plan;

3. 楼承板可作为楼板的底筋使用,减少了安装板筋的工作量;

3. The floor support plate can be used as the bottom reinforcement of the floor slab, reducing the workload of installing plate reinforcement;

4. 根据压型板刚才的不同界面形状,多可以减少30%的楼板混凝土用量,减少楼板自重又可以相应的减少梁、柱和基础的尺寸,提高了结构的整体性能;

4. According to the different interface shapes of the compression plate, the amount of concrete used in the floor slab can be reduced by 30%, reducing the self weight of the floor slab and correspondingly reducing the size of beams, columns, and foundations, thereby improving the overall performance of the structure;


2、 I-shaped steel


I-shaped steel, also known as steel beams, is a long strip of steel with an I-shaped cross-section. Its specifications are expressed in millimeters of waist height (h) * leg width (b) * waist thickness (d). For example, "I 160 * 88 * 6" represents an I-shaped steel with a waist height of 160 millimeters, leg width of 88 millimeters, and waist thickness of 6 millimeters. I-beams are divided into three types: ordinary I-beams, light I-beams, and H-beams.


The flange of ordinary and lightweight I-beams gradually becomes thinner from the root to the edge, with a certain angle. Due to their relatively high and narrow cross-sectional dimensions, there is a significant difference in the moment of inertia between the two main sleeves of the cross-section. Therefore, they are generally only used for components that are bent in the plane of the web or to form a lattice load-bearing component. It is not used for axially compressed components or components with bending perpendicular to the web plane, which has significant limitations in its application range.



I-beams are widely used in various building structures, bridges, vehicles, brackets, machinery, etc.


3、 C-shaped steel


It is processed by hot rolling and cold bending, and is automatically processed by a C-shaped steel forming machine. The wall is thin and lightweight, with excellent cross-sectional performance and high strength. Compared with traditional channel steel, the same strength can save materials by 30%.


C-shaped steel purlins are divided into five specifications based on their height: 80, 100, 120, 140, and 160. The length can be determined according to the engineering design, but considering transportation and installation conditions, the total length generally does not exceed 12 meters.


C-shaped steel is widely used in purlins, wall beams, and can also be assembled into lightweight building components such as roof trusses and brackets. In addition, it can also be used for columns, beams, and arms in mechanical light industry manufacturing.


4、 H-shaped steel


It is an economical section steel with better mechanical properties developed from optimized I-shaped steel, especially named after the same section as the English letter "H". H-shaped steel is divided into wide flange steel (HW), medium flange H-shaped steel (HM), narrow flange H-shaped steel (HN), thin-walled H-shaped steel (HT), and H-shaped steel (HU).


H-shaped steel is a new type of economic building steel. The cross-sectional shape of H-shaped steel is economically reasonable, with good mechanical properties. During rolling, the extension of each point on the section is relatively uniform and the internal stress is small. Compared with ordinary I-shaped steel, it has the advantages of large cross-sectional modulus, light weight, and metal saving, which can reduce the weight of building structures by 30-40%; Due to the parallel inner and outer sides of its legs and the right angled leg ends, it can be assembled into components, saving up to 25% of welding and riveting work. Commonly used as brackets, foundation piles, etc. in large buildings with high load-bearing capacity and good cross-sectional stability.


Advantages of H-shaped steel:


Wide wing edge and high lateral stiffness. Strong bending resistance.


The two surfaces of the wing edge are parallel to each other, making connection, processing, and installation simple.


Compared with welded I-beams, it has low cost, high accuracy, low residual stress, no need for expensive welding materials and weld seam testing, and saves about 30% of steel structure production costs.


Under the same cross-sectional load, hot-rolled H-steel structures reduce weight by 15% -20% compared to traditional steel structures


Compared with concrete structures, hot-rolled H-steel structures can increase their usage area by 6%, while reducing their self weight by 20-30% and reducing the internal forces in the structural design.


H-shaped steel can be processed into T-shaped steel, and honeycomb beams can be combined to form various cross-sectional forms, greatly meeting the needs of engineering design and production.

五、工字钢 HW HM HN H型钢的区别

5、 The difference between H-shaped steel HW HM HN H-shaped steel

工字钢翼缘是变截面靠腹板部厚,外部薄;H型钢的翼缘是等截面,HW、HM、HN、H是H型钢的通称,H型钢是焊制;HW HM HN是热轧,HW 是H型钢高度和翼缘宽度基本相等主要用于钢筋砼框架结构柱中钢芯柱,也称劲性钢柱;在钢结构中主要用于柱。

The flange of I-beam is a variable cross-section with a thicker web plate and a thinner outer surface; The flange of H-shaped steel is of equal cross-section, and HW, HM, HN, and H are the general terms for H-shaped steel, which is welded; HW HM HN is hot-rolled, and HW is an H-shaped steel with a height and flange width that are basically equal. It is mainly used for steel core columns in reinforced concrete frame structures, also known as rigid steel columns; Mainly used for columns in steel structures.

HM 是H型钢高度和翼缘宽度比例大致为1.33~~1.75,主要在钢结构中:用做钢框架柱在承受动力荷载的框架结构中用做框架梁;例如:设备平台。

HM is an H-shaped steel with a height to flange width ratio of approximately 1.33 to 1.75, mainly used in steel structures as steel frame columns and as frame beams in frame structures subjected to dynamic loads; For example: device platform.


HN is an H-shaped steel with a height to flange width ratio greater than or equal to 2, mainly used for beams; The use of I-shaped steel is equivalent to that of HN shaped steel;