A construction early warning method considering the coupling of risk factors

Abstract

The present invention relates to a construction early warning method considering the coupling of risk factors, belongs to the technical field of building construction, and aims to provide a super high-rise building construction safety risk early warning method. The method, before the construction of the building project begins, determines the deformation index δ of the building equipment and the reduction coefficient table; obtains the value of the equipment deformation index δ through deformation sensor monitoring, and divides the equipment deformation index δ into four levels of early warning, and uses the reduction coefficient k to reduce the graded value of the equipment deformation index δ, and then compares the values ​​before and after the reduction to obtain the value of the early warning state; then the early warning level is issued, and the project site management personnel take corresponding safety control measures according to the issued early warning level, and judge whether the project is suspended, if it is suspended, the early warning is stopped, if it is not stopped, the above-mentioned early warning steps are repeated, and the early warning is continued until the construction safety risk early warning ends.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to a construction early warning method taking risk factor coupling into consideration. Background Art

[0002] In the process of construction, the existing AHP analytic hierarchy process, causal theory, WBS-RBS method, complex network analysis and other methods provide basic technical support for the construction of a general construction risk warning system for risk factors that induce construction safety accidents. The integral steel platform provides a safe and reliable construction platform for super-high-rise construction, which has the characteristics of complex construction environment and complex equipment structure. The analysis of super-high-rise construction risks is based on the construction characteristics of the integral steel platform. Existing studies generally use the most extreme indicators as the basis for risk warning, and the warning for the complex risk characteristics of super-high-rise buildings also lacks a method for determining warning indicators combined with construction site monitoring conditions. Summary of the invention

[0003] The main purpose of the present invention is to address the problem of the lack of safety risk warning methods for super-high-rise building construction using integral steel platform equipment, overcome the shortcomings of the existing technology, take the equipment type risk factor as the decisive key link, and select the physical quantity indicators of the safety status of the load-bearing components of the integral steel platform equipment as the characteristic parameters reflecting the safety status of super-high-rise building construction and the core indicators of risk warning, so as to provide a construction warning method that takes the coupling of risk factors into consideration.

[0004] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0005] A construction early warning method considering the coupling of risk factors includes the following steps:

[0006] Step S1, before the construction of the building project begins, determine the values ​​of four warning classification values ​​{δ1, δ2, δ3, δ4} of the building equipment deformation index δ, and determine the four warning classification values ​​{σ1, σ2, σ3, σ4} of the equipment stress index σ; obtain a reduction coefficient value table;

[0007] Step S2, project start-up and construction safety risk warning begins;

[0008] Step S3, the warning time is updated in steps, and the warning is cyclically performed in the form of time steps, and the warning time step is set according to the specific situation of the super high-rise building construction;

[0009] Step S4: The project manager provides the personnel index R h The automatic monitoring device on the integral steel platform gives the equipment deformation index δ, equipment stress index σ, and equipment fuse index F m The environmental monitoring device at the project construction site gives the general environmental index Re , Environmental fuse index F e The value of

[0010] Step S5, reducing the four warning graded values ​​{δ1, δ2, δ3, δ4} of the equipment deformation index δ according to the reduction coefficient table, and obtaining the four warning graded reduction values ​​{δ'1, δ'2, δ'3, δ'4} of the equipment deformation index δ; reducing the four warning graded values ​​{σ1, σ2, σ3, σ4} of the equipment stress index σ according to the reduction coefficient table, and obtaining the four warning graded reduction values ​​{σ'1, σ'2, σ'3, σ'4} of the equipment stress index δ;

[0011] Step S6, compare the value of the equipment deformation index δ obtained by sensor monitoring with the four graded reduction values ​​of the equipment deformation index δ {δ'1, δ'2, δ'3, δ'4} to obtain R m，变形 The value of: When δ<δ'1, R m，变形 The value of is no warning; when δ'1≤δ<δ'2, R m，变形 The value of is blue warning; when δ'2≤δ<δ'3, R m，变形 The value of is yellow warning; when δ'3≤δ<δ'4, R m，变形 The value of is orange warning; when δ≥δ'4, R m，变形 The value of is a red warning; the value of the equipment stress index σ obtained by sensor monitoring is compared with the four graded reduction values ​​of the equipment stress index σ {σ'1, σ'2, σ'3, σ'4} to obtain R m，受力 The value of: When σ<σ'1, R m，受力 The value of is no warning; when σ'1≤σ<σ'2, R m，受力 The value of is blue warning; when σ'2≤σ<σ'3, R m，受力 The value of is yellow warning; when σ'3≤σ<σ'4, R m，受力 The value of is orange warning; when σ≥σ'4, R m，受力 The value of is red warning;

[0012] Step S7, obtaining the total warning status R of the super high-rise building construction project site, R = max{R h ,R m,变形 ,R m,受力 ,F m ,R e ,F e};

[0013] Step S8, issuing a warning level according to the overall warning status R at the scene;

[0014] Step S9: The project site manager takes corresponding safety control measures according to the issued warning level;

[0015] Step S10, determining whether the construction project is suspended, if the construction project is suspended, stopping the early warning; if the construction project is not suspended, repeating steps S3 to S9;

[0016] Step S11, construction safety risk warning ends.

[0017] Furthermore, the value of the reduction coefficient k is obtained through finite element analysis of the equipment structure, and different levels of human factors and environmental factors are converted into different loads and boundary conditions. The reduction coefficient table is determined by comparing the calculation results under different conditions.

[0018] Furthermore, the values ​​of the warning indicators are as follows: red warning>orange warning>yellow warning>blue warning>no warning.

[0019] Furthermore, the equipment deformation index δ includes a measurement index of the safety risk caused by excessive equipment deformation at the construction site based on the monitored physical quantities of deformation, verticality and horizontality of the overall steel platform equipment components.

[0020] Furthermore, the equipment stress index σ is a measurement index of the safety risk caused by excessive equipment stress at the construction site based on the monitored physical quantities of stress and pressure of the overall steel platform equipment components.

[0021] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0022] The construction early warning method considering the coupling of risk factors provided by the present invention determines the deformation index δ and reduction coefficient table of building equipment before the construction of the building project begins; the value of the equipment deformation index δ is obtained by monitoring the deformation sensor, and the equipment deformation index δ is divided into four levels of early warning, and the graded value of the equipment deformation index δ is reduced by the reduction coefficient k, and then the values ​​before and after the reduction are compared to obtain the value of the early warning state; then the early warning level is issued, and the project site management personnel take corresponding safety control measures according to the issued early warning level, and judge whether the project is suspended. If it is suspended, the early warning is stopped, and if it is not stopped, the above-mentioned early warning steps are repeated, and the early warning is continued until the construction safety risk early warning ends. The present invention takes the equipment type risk factor as the decisive key link, and selects the physical quantity index of the safety state of the load-bearing component of the equipment as the characteristic parameter reflecting the safety state of the equipment construction and the core index of the risk early warning, and adopts the method of index reduction, which is simple and practical, and convenient for project management personnel to operate and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a flow chart of a super-high-rise construction early warning method considering risk factor coupling in Embodiment 1 of the present invention;

[0024] Figure 2 Schematic diagram of the four-level warning principle and mechanism of the super-high-rise construction warning method considering the coupling of risk factors in the first embodiment of the present invention. DETAILED DESCRIPTION

[0025] The construction early warning method considering the coupling of risk factors proposed by the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will become clearer. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. For the convenience of description, the "upper" and "lower" described below are consistent with the upper and lower directions of the accompanying drawings, but this cannot be a limitation of the technical solution of the present invention.

[0026] Embodiment 1

[0027] Safety risk warning for the construction of a super high-rise building core tube equipped with an integral steel platform.

[0028] The core tube construction system used in the super high-rise building construction project of this embodiment is an integral steel platform equipment. The basic process of the early warning method proposed in the present invention is adopted to carry out a construction safety risk early warning operation of an early warning time step based on the super high-rise project. In this embodiment, the four-level early warning classification of the equipment deformation index δ and the equipment stress index σ is used for explanation.

[0029] The super-high-rise construction risk warning process proposed in this embodiment mainly includes 11 steps:

[0030] S1: Before the warning starts

[0031] Before the start of the super-high-rise construction safety risk warning operation, firstly, according to the overall steel platform equipment structure design plan, an elastic-plastic finite element model of the equipment structure is established based on large-scale finite element calculation software, and according to the four-level warning classification value calculation criteria of the equipment deformation index δ and the equipment force index σ proposed in the present invention, the four warning classification values ​​of the equipment deformation index δ and the equipment force index σ are calculated respectively.

[0032] The super high-rise construction early warning index system in this embodiment includes 6 indicators, namely: personnel index R h , General environmental indicators R e , Environmental fuse index F e , equipment deformation index δ, equipment stress index σ, equipment fuse index F m .

[0033] The personnel index R hThe values ​​are "no warning, blue warning, yellow warning, orange warning, and red warning" from low to high risk. The project site management personnel will make a qualitative judgment on the project based on their understanding and observation of the professional quality and physical and mental state of all personnel on the construction site, combined with project management experience, on vocational training, physical condition, psychological state, professional ability, safety awareness, etc., and give a unified score to all personnel on the project site, and directly give a qualitative judgment result.

[0034] The general environmental index R e It is a measurement indicator of the safety risks currently faced by construction workers at the construction site based on the quality and health status of the construction workers. e The values ​​of are “no warning, blue warning, yellow warning, orange warning, and red warning” from low to high risk. The general environmental index R e The value of is based on the wind speed index R e，风速 The value of high temperature index R e，高温 The value of low temperature index R e，低温 The value of is obtained according to formula (1), and the comparison rule in formula (1) is: red warning>orange warning>yellow warning>blue warning>no warning;

[0035] R e =max{R e,风速 ,R e，高温 ,R e，低温} (1)

[0036] The wind speed determination value R e，风速 According to the wind speed monitored at the construction site: when the wind speed is lower than level 6, R e，风速 The value of is no warning; when the wind speed is higher than level 6 and not more than level 8, R e，风速 The value of is blue warning; when the wind speed is higher than level 8 and not more than level 10, R e，风速 The value of is yellow warning; when the wind speed is higher than level 10 and not more than level 12, R e，风速 The value of is orange warning; when the wind speed is higher than level 12, R e，风速 The value of is red warning;

[0037] The wind speed determination value R e，高温 According to the temperature monitored at the construction site: when the temperature does not exceed 30℃, R e，高温 The value of is no warning; when the temperature is higher than 30℃ and not more than 35℃, R e，高温 The value of is blue warning; when the temperature is higher than 35℃ and not more than 37℃, R e，高温 The value of is yellow warning; when the temperature is higher than 37℃ and not more than 40℃, R e，高温 The value of is orange warning; when the temperature is higher than 40℃, Re，高温 The value of is red warning;

[0038] The wind speed determination value R e，低温 According to the temperature monitored at the construction site: when the temperature is not less than 5℃, R e，低温 The value of is no warning; when the temperature is lower than 5℃ and not less than 0℃, R e，低温 The value of is blue warning; when the temperature is below 0℃ and not less than -5℃, R e，低温 The value of is yellow warning; when the temperature is lower than -5℃ and not less than -15℃, R e，低温 The value of is orange warning; when the temperature is below -15℃, R e，低温 The value is red warning.

[0039] The environmental fuse index F e It is a measurement indicator of the safety risks currently faced by construction sites due to extreme natural disasters such as earthquakes and typhoons, as well as emergencies such as impacts, caused by extreme environmental events.

[0040] The environmental fuse index F e The values ​​are "no warning, red warning" from low to high risk, and the values ​​are directly given by the project management personnel according to the actual situation; if there are no extreme natural disasters such as earthquakes, typhoons, and other emergencies such as collisions at the construction site, the environmental fuse index F e The value of is "no warning"; if extreme natural disasters such as earthquakes, typhoons, and other emergencies such as impacts occur at the construction site, the environmental fuse index F e The value is "red warning".

[0041] The equipment deformation index δ is a measurement index of the safety risk caused by excessive equipment deformation at the construction site based on monitoring physical quantities such as deformation, verticality, horizontality, etc. of the overall steel platform equipment components.

[0042] The value of the equipment deformation index δ is the maximum value of the equipment deformation monitored by all deformation sensors installed on the integral steel platform equipment, in units of mm; the equipment deformation index δ is set to four warning classification values, namely: δ1, δ2, δ3, δ4;

[0043] The equipment stress index σ is a measurement index of the safety risk caused by excessive equipment stress at the construction site based on monitoring physical quantities such as stress and pressure of the overall steel platform equipment components.

[0044] The value of the equipment stress index σ is the maximum value of the equipment stress monitored by all the stress sensors installed on the integral steel platform equipment, and the unit is kPa; the equipment stress index σ is set with four warning classification values, namely: σ1, σ2, σ3, and σ4.

[0045] δ1 and σ1 are calculated according to formula (2); in formula (2), σ is the maximum internal force actually borne by the equipment structure, σ d is the design strength, R is the working resistance, S is the different load effects, K is the actual stability safety factor, and [K] is the design allowable safety factor;

[0046]

[0047] δ2 and σ2 are calculated according to formula (3); in formula (3), σ e is the elastic limit strength of the material of the overall steel platform structure, K e is the allowable safety factor of the elastic limit state;

[0048]

[0049] δ3 and σ3 are calculated according to formula (4); in formula (4), σ b is the material plastic limit strength of the overall steel platform structure;

[0050] {δ3,σ3}=f(σ≤σ b ,max(k b )≤1,R≥S) (4)

[0051] δ4 and σ4 are calculated based on the finite element model of the overall steel platform equipment. According to the structural form of the load-bearing components of the equipment and based on the most unfavorable structural form that causes the overall instability of the equipment, the load applied to the finite element model of the equipment structure is increased until the equipment structure loses its bearing capacity and becomes unstable and damaged. In this state, the maximum deformation calculated is δ4, and the maximum stress value is σ4.

[0052] The equipment fuse index F m It is a measurement indicator of the safety risks caused by abnormalities of the power unit based on the automatic monitoring of the operating status of the lifting power unit of the overall steel platform equipment.

[0053] The equipment fuse index F m The risk ranges from low to high: “no warning, red warning”, and the value is automatically obtained by the equipment mechanical power control system; if the power device of the overall steel platform operates normally, the equipment fuse index F m The value of is "no warning"; if any abnormality occurs in the operation of the power device of the integral steel platform, the equipment fuse index F m The value is "red warning".

[0054] The reduction method of the risk warning index of super-high-rise construction equipment proposed in the present invention adopts a reduction system k to reduce the graded values ​​{δ1, δ2, δ3, δ4} of the equipment deformation index δ to obtain its reduction value {δ'1, δ'2, δ'3, δ'4}, and adopts a reduction system k to reduce the graded values ​​{σ1, σ2, σ3, σ4} of the equipment stress index σ to obtain its reduction value {σ'1, σ'2, σ'3, σ'4}; reduction is performed according to formula (5);

[0055]

[0056] The value of the reduction coefficient k is obtained through finite element analysis of the equipment structure. Different levels of human factors and environmental factors are converted into different loads and boundary conditions. The reduction coefficient table is determined by comparing the calculation results under different conditions. The format of the reduction coefficient table is as follows:

[0057]

[0058] In this embodiment, due to the lack of on-site survey information on the restraining components in the equipment structure, it is only necessary to determine the value of the equipment deformation warning index, and the calculated equipment deformation index warning value is: δ1=7.5mm, δ2=15.8mm, δ3=36.9mm, δ4=102.3mm.

[0059] The coupling influence of personnel factors and environmental factors is simplified, and the additional loads caused by four levels of personnel factors (2kPa, 3kPa, 4kPa, 5kPa) and four levels of wind loads (0.5kPa, 0.83kPa, 1.25kPa, 2.08kPa) are considered respectively, and the overall steel platform equipment structural model in the red warning critical state is analyzed.

[0060] The maximum deformation of the equipment under different combined effects is obtained, and the ratio of the deformation index warning value δ4 to the calculated deformation is taken as the reduction coefficient to obtain the warning index reduction coefficient table, as shown in the following table:

[0061] Table 1 Reduction coefficient table

[0062]

[0063] S2: Project launch, early warning begins

[0064] S3: Warning time step update

[0065] In this embodiment, the early warning time step is updated, and the early warning is cyclically performed in the form of time steps. The early warning time step is set according to the specific situation of the super high-rise building construction, and S4-S10 is a warning time step cycle. The early warning time step of this embodiment is 15 minutes, that is, an early warning operation is performed every 15 minutes. This embodiment is the nth time step of the early warning operation of the super high-rise project, and the specific time is 14:15 on the same day. The 15-minute early warning operation officially begins below.

[0066] S4: Initial Warning Operations

[0067] Project managers are given personnel indicators R by project managers h The automatic monitoring device on the integral steel platform gives the equipment deformation index δ and equipment fuse index F m The environmental monitoring device at the project construction site gives the general environmental index R e , Environmental fuse index F e The value of .

[0068] At 14:15, the project manager observed the workers working on the integral steel platform. As it was afternoon, the workers on site lacked the conditions for a lunch break and were generally mentally exhausted. The project manager scored the workers and determined the personnel index R according to the criteria given in Table 2. h The value is "yellow warning".

[0069] Table 2 Qualitative evaluation criteria for personnel status

[0070]

[0071] The simplified calculation result of the product of the strain at the measuring point and the length of the monitoring component is used as the basis for the value of the deformation index. The monitoring found that around 14:18 on the same day, the deformation of the equipment structure changed suddenly, and the safety risk of the equipment increased. The two measuring points with the largest change in the strain monitoring point were selected, and the changes in the remaining measuring points were very small, and the deformation reflected was negligible. The length of the steel platform beam corresponding to the platform beam measuring point is 18.5m, and the measuring point is located at the characteristic position of the upper flange of the platform beam. The monitoring results show that the strain of the measuring point changes from 2556μ to 2608μ, and the calculated deformation is 0.962mm. The beam length corresponding to the cantilever beam measuring point is 9.5m, and the measuring point is located at the characteristic position of the upper flange of the beam. The monitoring results show that the strain of the measuring point changes from 3275μ to 3422μ, and the calculated deformation is 1.397mm. Therefore, the value of the equipment deformation index δ is 1.397mm, which is used to determine the equipment warning status. At this time, the overall steel platform is not in a dynamic lifting state, but in a general operating state, and the power lifting structure is not working. Therefore, the equipment fuse index F m The value is "No warning".

[0072] At this time, the temperature on the steel platform was 16°C, which was relatively suitable; the ground wind speed was level 7, and the wind speed was relatively high at the working surface at an altitude of about 300m, with the actual measured wind speed being level 9. The project management personnel made a comprehensive assessment of the environmental risk factors based on the criteria in Table 3 and determined the general environmental index R e The value is "yellow warning". Since there are no earthquakes, typhoons, and other emergencies, the environmental fuse index F e The value is "No warning".

[0073] Table 3 Criteria for the classification of four-level warning values ​​of environmental risk indicators

[0074]

[0075] S5: Index reduction

[0076] The four warning classification values ​​{δ1, δ2, δ3, δ4} of the equipment deformation index δ are reduced according to the reduction coefficient table to obtain the four warning classification reduction values ​​{δ'1, δ'2, δ'3, δ'4} of the equipment deformation index δ; the four warning classification values ​​{σ1, σ2, σ3, σ4} of the equipment stress index σ are reduced according to the reduction coefficient table to obtain the four warning classification reduction values ​​{σ'1, σ'2, σ'3, σ'4} of the equipment stress index δ. Specifically:

[0077] Check the reduction coefficient table (Table 1), personnel index R h The value of and general environmental index R e The values ​​are all "yellow warning", the reduction coefficient is 0.726, and the reduced equipment deformation index reduction values ​​are: δ'1=5.5mm, δ'2=11.5mm, δ'3=26.8mm, δ'4=74.3mm.

[0078] S6: Get equipment index R m The value of

[0079] Compare the value of the equipment deformation index δ obtained by sensor monitoring with the four graded reduction values ​​of the equipment deformation index δ {δ'1, δ'2, δ'3, δ'4} to obtain R m，变形 The value of: When δ<δ'1, R m，变形 The value of is "no warning"; when δ'1≤δ<δ'2, R m，变形 The value of is "blue warning"; when δ'2≤δ<δ'3, R m，变形 The value of is "yellow warning"; when δ'3≤δ<δ'4, R m，变形 The value of is "orange warning"; when δ≥δ'4, R m，变形The value of is “red warning”; the value of the equipment stress index σ obtained by sensor monitoring is compared with the four graded reduction values ​​of the equipment stress index σ {σ'1, σ'2, σ'3, σ'4} to obtain R m，受力 The value of: When σ<σ'1, R m，受力 The value of is “no warning”; when σ'1≤σ<σ'2, R m，受力 The value of is "blue warning"; when σ'2≤σ<σ'3, R m，受力 The value of is "yellow warning"; when σ'3≤σ<σ'4, R m，受力 The value of is "orange warning"; when σ≥σ'4, R m，受力 The value is "red warning".

[0080] In this embodiment, the reduced blue warning value of the deformation index is δ'1=5.5 mm, and the monitoring value 1.397 mm is less than the reduced value 5.5 mm. Therefore, the equipment index R m The value is "blue warning".

[0081] S7: Get the value of system warning indicator R

[0082] The total warning status R of the super high-rise building construction project site, R = max{R h ,R m,变形 ,R m,受力 ,F m ,R e ,F e}; In this embodiment, the value of the system warning indicator R is "yellow warning".

[0083] S8: Issue warning

[0084] Based on the "yellow warning" obtained from S7, the project manager will issue the warning to all areas and personnel at the super-high-rise project site. The release method can be broadcast, mobile phone reminder, wearable device reminder or verbal communication by the on-site manager, and the warning level will be released according to the overall warning status R of the site.

[0085] S9: Early warning measures

[0086] The project site management personnel take corresponding safety control measures according to the issued warning level. In this embodiment, the project management personnel implement corresponding measures according to the "yellow warning" level. In this embodiment, measures such as strengthening inspections, reducing the number of workers on the top of the steel platform, and temporarily resting construction personnel can be taken.

[0087] S10: Stoppage judgment

[0088] At the end of the time step, determine whether the project is shut down: if the project is not shut down, continue with the next time step warning, and the process returns to S3. If the project is shut down, the process enters S11. In this embodiment, the end time of the warning time step is 14:30. At this time, the project is not shut down, and the judgment result is "no", and the warning operation of the next warning time step is carried out.

[0089] S11: Construction safety risk warning ends.

[0090] The early warning cycle in this embodiment is not interrupted, so there is no S11.

[0091] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A construction early warning method considering the coupling of risk factors, characterized in that: The steps include: Step S1, before the construction of the building project begins, determine the values ​​of four warning classification values ​​{δ1, δ2, δ3, δ4} of the deformation index δ of the building equipment, and determine the four warning classification values ​​{σ1, σ2, σ3, σ4} of the equipment stress index σ; the value of the reduction coefficient k is obtained by finite element analysis of the equipment structure, and different levels of human factors and environmental factors are converted into different loads and boundary conditions. The reduction coefficient table is determined by comparing the calculation results under different conditions to obtain the reduction coefficient value table; Step S2, project start-up and construction safety risk warning begins; Step S3, the warning time is updated in steps, and the warning is cyclically performed in the form of time steps, and the warning time step is set according to the specific situation of the super high-rise building construction; Step S4: The project manager provides the personnel index R h The automatic monitoring device on the integral steel platform gives the equipment deformation index δ, equipment stress index σ, and equipment fuse index F m The environmental monitoring device at the project construction site gives the general environmental index R e , Environmental fuse index F e The equipment deformation index δ includes a measurement index of the safety risk caused by excessive equipment deformation at the construction site based on the monitoring physical quantities of deformation, verticality and horizontality of the overall steel platform equipment components; the equipment force index σ is a measurement index of the safety risk caused by excessive equipment force at the construction site based on the monitoring physical quantities of stress and pressure of the overall steel platform equipment components; the value of σ is the maximum value of the equipment stress monitored by all the force sensors installed on the overall steel platform equipment, in kPa, δ1 and σ1 are based on Calculated, σ is the maximum internal force actually borne by the equipment structure, σ d is the design strength, R is the working resistance, S is the different load effects, K is the actual stability safety factor, [K] is the design allowable safety factor; δ2 and σ2 are based on Calculated, σ e is the elastic limit strength of the material of the overall steel platform structure, K e is the allowable safety factor of the elastic limit state; δ3 and σ3 are calculated according to {δ3,σ3}=f(σ≤σ b ,max(k b )≤1,R≥S) is calculated, σ b is the material plastic limit strength of the overall steel platform structure; δ4 and σ4 are calculated and obtained based on the finite element model of the overall steel platform equipment. According to the structural form of the load-bearing components of the equipment and based on the most unfavorable structural form that causes the overall instability of the equipment, the load applied to the finite element model of the equipment structure is increased until the equipment structure loses its bearing capacity and instability and damage occurs. The maximum deformation calculated in this state is δ4, and the maximum stress value is σ4; Step S5, reducing the four warning graded values ​​{δ1, δ2, δ3, δ4} of the equipment deformation index δ according to the reduction coefficient table, and obtaining the four warning graded reduction values ​​{δ'1, δ'2, δ'3, δ'4} of the equipment deformation index δ; reducing the four warning graded values ​​{σ1, σ2, σ3, σ4} of the equipment stress index σ according to the reduction coefficient table, and obtaining the four warning graded reduction values ​​{σ'1, σ'2, σ'3, σ'4} of the equipment stress index δ; Step S6, compare the value of the equipment deformation index δ obtained by sensor monitoring with the four graded reduction values ​​of the equipment deformation index δ {δ'1, δ'2, δ'3, δ'4} to obtain R m，变形 The value of: When δ<δ'1, R m，变形 The value of is no warning; when δ'1≤δ<δ'2, R m，变形 The value of is blue warning; when δ'2≤δ<δ'3, R m，变形 The value of is yellow warning; when δ'3≤δ<δ'4, R m，变形 The value of is orange warning; when δ≥δ'4, R m，变形 The value of is a red warning; the value of the equipment stress index σ obtained by sensor monitoring is compared with the four graded reduction values ​​of the equipment stress index σ {σ'1, σ'2, σ'3, σ'4} to obtain R m，受力 The value of: When σ<σ'1, R m，受力 The value of is no warning; when σ'1≤σ<σ'2, R m，受力 The value of is blue warning; when σ'2≤σ<σ'3, R m，受力 The value of is yellow warning; when σ'3≤σ<σ'4, R m，受力 The value of is orange warning; when σ≥σ'4, R m，受力 The value of is red warning; Step S7, obtaining the overall warning status R of the super high-rise building construction project site, R=max{R h ,R m,变形 ,R m,受力 ,F m ,R e ,F e }; Step S8, issuing a warning level according to the overall warning status R at the scene; Step S9: The project site manager takes corresponding safety control measures according to the issued warning level; Step S10, determining whether the construction project is suspended, if the construction project is suspended, stopping the early warning; if the construction project is not suspended, repeating steps S3 to S9; Step S11, construction safety risk warning ends.

2. The early warning method according to claim 1, characterized in that: The values ​​of the warning indicators are as follows: red warning>orange warning>yellow warning>blue warning>no warning.

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