Xintai Honggu Steel Structure Factory

Used steel structure engineering, under the influence of various factors in different environments, may sometimes fail to meet the requirements for strength, stiffness, or stability. Therefore, it is necessary to analyze the specific situation and reinforce the steel structure accordingly. Reinforcement of used steel structures not only enhances the seismic and compressive resistance of steel structure factories but also extends their service life. This article combines realUsed钢结构 for SaleEngineering Case Study: The Application of Reinforcement Technology for Used Steel Structures
Reinforcement of second-hand steel structures is often necessary for various reasons, which will be specifically analyzed and summarized below. For instance, changes in the functional use of steel structures due to external environmental conditions, damage from disasters, and insufficient durability are some of the reasons that necessitate reinforcement, redesign, and reconstruction of steel structures. If steel structures require reinforcement under special circumstances, they should comply with the specifications of the corresponding specialized technical standards. With years of construction and design experience, we have made the reinforcement technology of steel structures widely applicable in this field. In order to enhance the load-bearing capacity, durability, and meet the requirements of the existing steel structures, and to ensure the reinforcement is technically reliable, economically feasible, easy to construct, and guarantees quality, the following will discuss the reasons and principles of steel structure reinforcement for your reference.
Summary of Reasons for Reinforcement and Strengthening of Second-hand Steel Structures
Structural steelwork exhibits significant defects or damage, or the conditions of use have changed. When an inspection and calculation confirm that the strength, rigidity, or stability of the structure do not meet the requirements for use, reinforcement of the steel structure should be carried out. Common reasons for the need to reinforce structural steel include:
Due to design or construction defects in the steel structure, such as insufficient weld length, excessively long cuts on members, and excessive reduction in cross-section, etc.
2. Over time, the structure has developed varying degrees of rust, wear, and abnormal operation, leading to structural defects and severely reducing the cross-sectional strength of the structural components.
3. Changes in production conditions have led to increased loads on the structure, which the existing design cannot accommodate.
The quality of the steel used does not meet the required standards.
5. Severe structural damage caused by accidents and natural disasters.
Due to the settlement of the foundation, structural deformation and damage have occurred.
Secondly, the reinforcement principles for second-hand steel structures.
Structural reinforcement or component strengthening is a complex task with numerous factors to consider. The choice of reinforcement methods should be based on ease of construction, non-impact on production, economic rationality, and effectiveness. General principles are as follows:
1. Strengthening efforts should be made to minimize production downtime or stoppage, as the losses from halting production are often several or even dozens of times the cost of strengthening. Whether strengthening can be done without stopping production under load depends on the structural stress-strain state. Generally, the internal stress of components is less than 80% of the design strength of steel, and when component damage and deformation are not too severe, load-bearing strengthening without stopping production can be employed.
2. The structural reinforcement plan must be easy to fabricate, construct, and inspect.
3. Structural manufacturing and assembly should be conducted as much as possible outside of the production area.
During welding reinforcement, the original stress on the steel members due to actual load must be below 60% of the steel's design strength, with the ultimate limit not exceeding 80%. Otherwise, appropriate measures must be taken before welding can proceed.