CN-122020787-A - Steel structure anti-falling installation control method based on dynamic load distribution

CN122020787ACN 122020787 ACN122020787 ACN 122020787ACN-122020787-A

Abstract

The invention relates to the technical field of steel structure installation safety, and discloses a steel structure anti-falling installation control method based on dynamic load distribution, which comprises the steps of S1, early preparation and model construction, S2, dynamic load real-time monitoring and identification, S3, dynamic load intelligent distribution and anti-falling regulation, S4, full-period optimization and acceptance guarantee. According to the steel structure anti-falling installation control method based on dynamic load distribution, through constructing a load model, monitoring dynamic load in real time, intelligently distributing load and optimizing and accepting in a full period, accurate adaptation of the dynamic load and an anti-falling system is achieved, the safety and reliability of the steel structure installation process are improved, and the technical defects that the existing steel structure anti-falling installation control method cannot be effectively adapted to dynamic load change, load regulation and control lag and safety management and control are imperfect are overcome.

Inventors

XIANG CHUN
CHU YUAN
CHEN JIA
YU JIAWEN
ZHOU PENGXIANG

Assignees

上海奉贤建设发展（集团）有限公司

Dates

Publication Date: 20260512
Application Date: 20260119

Claims (5)

1. The steel structure anti-falling installation control method based on dynamic load distribution is characterized by comprising the following steps of: S1, early preparation and model construction, namely constructing a steel structure digital model by combining parameters of a steel structure member and an installation flow, collecting dead weight of a core member, static load parameters of constructors and equipment, constructing a static load model, generating a hoisting load change model by taking hoisting moving load and wind dynamic load into account, and defining load bearing range of each bearing point; S2, dynamic load real-time monitoring and identification, namely deploying multidimensional sensing equipment at key nodes of the steel structure to collect load related signals, preprocessing the signals through edge computing nodes, extracting load frequency domain characteristics through time-frequency conversion, constructing load frequency domain fingerprint identification load types, synchronously simulating load change curves of all bearing points, setting load safety thresholds and carrying out real-time early warning; S3, intelligent distribution and anti-falling regulation of dynamic load, namely optimizing an installation flow according to a load change model and the load sequence of each bearing point, planning auxiliary hanging point positions to disperse and concentrate load, and transferring the load exceeding a safety threshold to a redundant supporting structure by regulating and controlling the rigidity of the supporting structure or regulating the supporting state of an actuator array; S4, full-period optimization and acceptance guarantee, namely recording load distribution effects of different working conditions to form a standardized regulation and control scheme by means of reinforcement learning optimization load prediction model parameters and load frequency domain fingerprint libraries, and dynamically testing and rechecking the anti-falling system and combining with operation specifications of monitoring personnel of an AI video analysis system to form a full-flow safety control closed loop.
2. The steel structure anti-falling installation control method based on dynamic load distribution is characterized in that in the step S1, steel bar hooks are preset on the lower flange of a steel beam, the distance between the hooks is 700-800mm and used for fixing a safety flat net, an outwards-lifted net installation path is planned on the periphery of the steel structure, every 4 layers of outwards-lifted nets are turned once, the lifting width is 2.8-3.2 m, and in the step S1, the anti-falling parts comprise safety ropes, slings and a life line system, wherein the diameters of the safety ropes are not smaller than 9mm, and the breaking load is not lower than 15kN.
3. The steel structure anti-falling installation control method based on dynamic load distribution, which is characterized in that in the step S2, the multi-dimensional sensing equipment comprises strain gauges, weighing devices and accelerometers, the key nodes comprise sling connection points, steel beam bearing points and bracket connection points, and the load types comprise hoisting impact load, wind fluctuation load and personnel equipment moving load.
4. The method for controlling the anti-falling installation of the steel structure based on dynamic load distribution according to claim 1, wherein in the step S3, the specific mode of regulating and controlling the rigidity of the supporting structure is that a heating element and a sensing module are additionally arranged on a temperature-sensitive metal strip supporting structure, a multi-objective optimization algorithm and self-adaptive PID control are fused, the rigidity of the metal strip is changed by adjusting the heating quantity of the heating element, the resistance value monitored by a strain gauge is maintained in an optimal range of 0.5-2.0Ω, and in the step S3, the specific mode of adapting the bearing state of the anti-falling component is that when the wind load dynamic load is monitored to be increased, the tension force of a horizontal life line is tightened to be 1.2-1.5kN, and meanwhile, the connection strength of a safety net hook is reinforced.
5. The steel structure anti-falling installation control method based on dynamic load distribution, which is characterized in that in the step S4, the anti-falling system dynamic test is specifically that 100kg sand bags are adopted for free falling test, the test height is 1.5-2.0m, the maximum deformation of a safety net body is ensured not to exceed 50cm, no damage and falling phenomenon occur, and in the step S4, rechecking contents comprise the number of steel wire rope clamps, the welding strength of a bracket and the connection reliability of anti-falling components, wherein the number of the steel wire rope clamps is not less than 3, and the clamping distance is not less than 6 times of the diameter of a steel wire rope.

Description

Steel structure anti-falling installation control method based on dynamic load distribution Technical Field The invention relates to the technical field of steel structure installation safety, in particular to a steel structure anti-falling installation control method based on dynamic load distribution. Background The steel structure is widely applied to the field of constructional engineering due to the advantages of high strength, convenient construction and the like, in particular to large-scale engineering such as high-rise buildings, large-span venues and the like. However, in the process of installing the steel structure, the links such as component hoisting, high-altitude operation and the like have higher falling risks, and serious casualties and property loss can be caused once accidents occur. The existing steel structure anti-falling installation control mostly adopts immobilized anti-falling measures, such as setting up a safe flat net, a life line and the like, and meanwhile, load judgment and installation flow planning are carried out by relying on experience of constructors. However, the load in the steel structure installation process has obvious dynamic characteristics, such as impact load during hoisting, wind fluctuation load at different heights, variable load generated by personnel and equipment movement and the like, the immobilized anti-falling measures are difficult to adapt to the change of the dynamic load, and the overload deformation of local components is easily caused by load concentration, so that the anti-falling structure failure is caused. In addition, the prior art lacks a real-time monitoring and intelligent distribution mechanism for dynamic load, cannot accurately identify load types and change trends, and is difficult to quickly take effective regulation and control measures when the load exceeds a safety threshold value, so that hysteresis exists in anti-falling safety control. Meanwhile, the existing installation control method does not form a full-period optimization and acceptance guarantee system, the load distribution effect cannot be optimized continuously, and the reliability of the anti-falling measures is difficult to verify fully. Therefore, aiming at the problems of poor dynamic load adaptability, lag in load monitoring and regulation, incomplete safety control closed loop and the like in the prior art, a steel structure anti-falling installation control method capable of monitoring dynamic load in real time, intelligently distributing load and realizing full-period safety guarantee is needed. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a steel structure anti-falling installation control method based on dynamic load distribution, which has the advantages of realizing accurate adaptation of a dynamic load and an anti-falling system by constructing a load model, monitoring the dynamic load in real time, intelligently distributing the load and optimizing and checking and accepting the whole period, improving the safety and reliability of the installation process of the steel structure, and solving the technical defects that the existing steel structure anti-falling installation control method cannot effectively adapt to dynamic load change, has lag in load regulation and control and is imperfect in safety management and control. In order to achieve the purpose, the invention provides the technical scheme that the steel structure anti-falling installation control method based on dynamic load distribution comprises the following steps: S1, early preparation and model construction, namely constructing a steel structure digital model by combining parameters of a steel structure member and an installation flow, collecting dead weight of a core member, static load parameters of constructors and equipment, constructing a static load model, generating a hoisting load change model by taking hoisting moving load and wind dynamic load into account, and defining load bearing range of each bearing point; S2, dynamic load real-time monitoring and identification, namely deploying multidimensional sensing equipment at key nodes of the steel structure to collect load related signals, preprocessing the signals through edge computing nodes, extracting load frequency domain characteristics through time-frequency conversion, constructing load frequency domain fingerprint identification load types, synchronously simulating load change curves of all bearing points, setting load safety thresholds and carrying out real-time early warning; S3, intelligent distribution and anti-falling regulation of dynamic load, namely optimizing an installation flow according to a load change model and the load sequence of each bearing point, planning auxiliary hanging point positions to disperse and concentrate load, and transferring the load exceeding a safety threshold to a redundant supporting structure by regulating and controlling the rigidity of the su