Stress removing and reinforcing method used for steel construction truss

Abstract

The invention discloses a stress removing and reinforcing method used for a steel construction truss. The stress removing and reinforcing method used for the steel construction truss is characterized by comprising the steps of: 1) detecting the actual stress state of the steel construction truss; 2) establishing a steel truss calculation model, and calculating the theoretical stress state of the steel construction truss; 3) analyzing the error between the actual stress state and the theoretical stress state of the steel construction truss; 4) correcting the steel truss calculation model by taking the actually-detected stress state as a reference; 5) adopting a revised steel truss computation model to carry out a simulation experiment; 6) carrying out a feasible optimal steel truss stress removing and reinforcing scheme design; 7) formulating a steel truss stress removing and reinforcing construction drawing; 8) carrying out the steel truss stress removing and reinforcing construction; and 9) monitoring the steel truss stress removing and reinforcing construction process. Compared with the prior art, the stress removing and reinforcing method has the beneficial effects that large construction mechanical equipment and unloading operation are not needed, and the original structure can be maintained, the construction volume is small, the consumption of materials is low, the construction is convenient, the cost is low and the reinforcing effect is good.

Description

technical field [0001] The invention relates to stress relief and reinforcement, in particular to a stress relief and reinforcement method for building steel trusses. Background technique [0002] Steel trusses, including steel roof trusses, steel brackets, and driving beams, are prone to warping, deflection, deformation, and twisting of members under the effects of load, deformation, displacement, and environmental factors, resulting in a decrease in their bearing capacity , the stability deteriorates, and even loses stability and collapses. There are two main ways to strengthen and rectify steel trusses that are commonly used at present. One is to strengthen under load without removing the load acting on the steel truss. The reinforcement is less difficult, the construction is the easiest, and the workload is the smallest. However, It is required that the bearing capacity of the original structure should have a surplus of not less than 20%, and the components are not seri...

AI Technical Summary

Problems solved by technology

[0002] Steel trusses, including steel roof trusses, steel brackets, and driving beams, are prone to warping, deflection, deformation, and twisting of members under the effects of load, deformation, displacement, and environmental factors, resulting in a decrease in their bearing capacity , the stability deteriorates, and even collapses due to instability

There are two main ways to strengthen and rectify steel trusses that are commonly used at present. One is to strengthen under load without removing the load acting on the steel truss. The reinforcement is less difficult, the construction is the easiest, and the workload is the smallest. However, It is required that the bearing capacity of the original structure should have a margin of not less than 20%, and the components are not seriously damaged or deformed, otherwise it is difficult to achieve the reinforcement effect

The other is to reinforce under the state of unloading the full load or under the state of unloading part of the load, and reinforce under the state of unloading the full load, which is suitable for structural damage or serious deformation or the bearing capacity of the original structural members is too small to be reinforced in situ Steel truss: Reinforcement under partial load unloading, suitable for steel trusses with serious structural damage or deformation, steel trusses with high component stress, and reinforcement construction must temporarily weaken the components and connected steel trusses that bear a large stress. The disadvantage is that the amount of reinforcement work is large, the cost is high, the construction period is long, and the unloading of all or part of the load directly affects the normal production. When out-of-plane deformation, the deflection correction effect is not ideal

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