What are the functions of steel rods?

The steel structural strut is a round tube fitted around the tension rod. Typically, the strut is made by encasing a round steel bar within a round tube, positioned at the location of the diagonal tension rod. This is to prevent deflection and deformation between the joists.

Effect

(1) To ensure the stability of components outside the plane and reduce the calculated length outside the plane, when lateral support points are required on the inner flanges of beams and columns, corner supports can be set using purlins or wall beams connected to the outer flanges. Corner supports are generally best made from single angle steel and designed as axially compressed components.

(2) The bracing is set up to enhance the stability of the compressed flanges (underside flanges beneath the beams and the inner flanges of columns) to prevent buckling instability. The bracing is designed to ensure the local stability of the compressed portion of the beam's underside flange. The local stability of the beam's top flange is guaranteed by the joists connected to it. Reason: The top flange of the beam is the tension zone, where there is no issue of overall stability. However, to some extent, there may be potential local stability problems. But generally, the lateral forces generated due to local instability are minimal. Therefore, the joists, as the connected components, can ensure that the flanges do not become unstable.

For girder trusses and steel frames, the top flange of the beam is under tension at the support location but under compression in the middle span. Therefore, the stability of the beam's top flange is ensured by the connected joists or floor panels to maintain its out-of-plane stability.

Calculation Method

To calculate the actual length (which can be found in the node detail drawings) and multiply it by the theoretical weight per meter of the corner brace (usually angle iron, which can be found in the hardware manual).

The bracing should be designed for axisymmetric compression members, and the axial force N can be calculated using the following formula:

N=A*f*(fy/235)^0.5/(60*cosθ)

When the corner bracing is arranged symmetrically, the calculated axial pressure for each corner brace can be taken as half the value from the aforementioned formula. It is advisable to manufacture corner bracing using single angle steel.

Reference Source:百度百科—隅撑

Noun Explanation

Laz strip

Laziji, a staple food for people in the northwestern region, is commonly found in family restaurants. Made by adding a moderate amount of salt to the dough, which is then kneaded, tamped, and proofed, the dough is shaped into agents. When cooked, it is rolled into thin strips and boiled. It can be served with a variety of stir-fried dishes or sauce. Simply adding ingredients to a wok and stir-frying it creates stir-fried noodles. There are many types of laziji, with thin, round ones called "chicken intestines," even thinner ones known as "a thread," flattened ones as "flat leaves," and narrow flattened ones as "chive leaves." The thinner the noodles, the better. The "firecrackers" are the ones pulled into strips about an inch long, while the finer ones are called "incense heads." The flat leaves are torn into square thin slices, known as "tear slices."

Components

Components are the replaceable parts that actually exist in a system. They perform specific functions, comply with a set of interface standards, and can implement a set of interfaces. Components represent a portion of the physical implementation in the system, including software code (source code, binary code, or executable code) or its equivalents (such as scripts or command files). In diagrams, components are represented as labeled rectangles. In practical engineering operations, various mechanical and structural elements are widely used. The elements and components that make up machinery and structures are collectively termed "components" in engineering mechanics.