How to ensure the stability of steel structure?

1. Static method: static method is through the simulation analysis of the structure after slight deformation of the stress situation, and based on this as the first to establish a balance differential equation, through the derivation of the balance differential equation to obtain the critical load value. In the concrete construction project, to establish the equilibrium differential equation, certain setting conditions must be satisfied. First, the steel structure members must use straight rod; Second, the pressure of the straight bar should be adapted to the action of the front axle.

2. Energy method: If the steel structure has conservative forces, in practical application, the relevant forces of the existing deformed structure can be combined to form the overall potential energy. Similarly, when the steel structure is in relative equilibrium, the overall potential energy needs to be calculated. In order to combine the stationary principle of relative potential energy, all potential energy can be decomposed into zero from the first-order variation, and then the balance equation can be generated. Combining the balance equation, the buckling load of the branch can be obtained.

3. Dynamic method: the so-called dynamic method is a method to analyze the stability of the existing steel structure according to the equilibrium state of the steel structure production and installation system. Therefore, if the disturbance in the system increases to a certain degree, even if the disturbance amplitude is small, the whole structural system will oscillate. In this process, the deformation and vibration of the steel structure will be accelerated, and these changes must be related to the load on the steel structure. If the load value of the steel structure is low and cannot reach the load limit of the steel structure itself, the detailed deformation direction of the steel structure will be opposite to the acceleration direction.

Planning methods to improve the stability of steel structure:

Strengthen the overall stability analysis. Added stability analysis for node connection planning. To establish a perfect theoretical system of pretension structure. Minimize the impact of uncertainty. Draw on a lot of mature planning experience.