CN110414800B - Method and device for evaluating construction accident risk source of super high-rise building - Google Patents
Method and device for evaluating construction accident risk source of super high-rise building Download PDFInfo
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- CN110414800B CN110414800B CN201910602888.9A CN201910602888A CN110414800B CN 110414800 B CN110414800 B CN 110414800B CN 201910602888 A CN201910602888 A CN 201910602888A CN 110414800 B CN110414800 B CN 110414800B
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Abstract
The invention discloses a method and a device for evaluating a construction accident risk source of a super high-rise building, wherein the method comprises the following steps: calculating by combining a fuzzy theory to obtain the probability of the risk load of each type of risk source under the industry average level, and calculating by utilizing random expression to obtain the average probability of the risk load of each type of risk source; determining the influence weight of different risk resistances on the risk load; correcting the average probability of the risk load occurrence of each type of risk source according to the risk resistance level and the influence weight of the project to be evaluated; and calculating to obtain a risk source evaluation result of the project to be evaluated according to the corrected average probability of the risk load of each type of risk source and the influence degree of the risk accident of each type of risk source. On one hand, the method improves the construction safety management level, thereby reducing the accident rate and saving the cost and the construction period; on the other hand, the method also reduces social problems caused by safety accidents, has better application prospect and brings higher social and economic benefits.
Description
Technical Field
The invention relates to the technical field of building construction risk management, in particular to a method and a device for evaluating a construction accident risk source of a super high-rise building.
Background
Engineering risk management occupies a very important position in a construction project, and engineering project personnel identify, evaluate, deal with and monitor uncertain conditions or events, adopt a means or a method with minimum cost to enable the engineering project to meet preset indexes, and guarantee the safety of the engineering project. The engineering risk management is complete and systematic, has the characteristic of being recyclable, and can be divided into four steps: risk identification, assessment, coping, and monitoring.
China develops corresponding research in the field of risk management. Several methods are commonly used in risk identification: (1) brainstorming method: the method is simple and is a common risk identification method. Freely speaking in a group discussion mode, avoiding mutual influence of speakers, dispersing thinking, and analyzing by an organizer to obtain a risk list; (2) the Delphi method: is an anonymous feedback inquiry method. The method mainly comprises the steps that an investigator puts forward problems and requirements of risk prediction and identification to a digital expert; and these experts submit their opinions in an anonymous fashion. The investigator collects the opinions, feeds back the opinions after the opinions are sorted and summarized, and the expert modifies the own opinion according to the opinions; and (4) collecting and feeding back repeatedly until the expert opinions tend to be consistent, and arranging the opinions to serve as a basis for identifying risks. The method is wide in representativeness and reliable. (3) statistical data method: and (4) carrying out attribution and summarizing the risk of the newly built project based on the data of the already built project. (4) checking the table method: the method finds out as many risks as possible according to rich engineering experience, and then lists the found risks on a table. The method has obvious effects on finding risk factors, preventing accidents and eliminating hidden diseases; in practice, however, the table does not necessarily include all the risks, with certain limitations.
On the other hand, a data envelope analysis method, a Bayesian network analysis method, a system dynamics model, a cognitive psychology analysis method and the like are adopted to evaluate risks. However, in the current research, the accident risk and the prevention ability are comprehensively judged at one time mainly based on expert experience, so that the evaluation result is difficult to refine, and the evaluation process is non-standardized, so that the safety management decision is difficult to effectively assist.
In the past, the research on project risks mainly focuses on the identification and evaluation of risk factors and researches the risk key points of the project, so that the risk control is performed on key points. However, while exploring the project risk points, people do not consider how the construction party deals with the risk levels, and whether the construction party has the ability to manage and control the risk of the project, so as to take the risk management to the real place. The existing research lacks understanding and research on the level of enterprise management risk, so that the risk management cannot be accurately carried out by taking medicines according to symptoms. The risk is uncertain in nature and may change with the change of project environment, and the self-qualification, management level, personnel quality and the like of different enterprises are different, so that the uncertainty of the project risk is increased.
Disclosure of Invention
The present application is made based on the recognition and finding of the following problems by the inventors:
according to the background technology, risk load and risk resistance in the building engineering are identified and researched, key links of risk accidents easily occurring in the engineering and important means for controlling risks are determined, the management level of enterprises on the risks is known, more effective risk management can be carried out, and reliability and safety of the engineering are guaranteed.
The present invention is directed to solving, at least in part, one of the technical problems in the related art.
Therefore, one object of the present invention is to provide a method for evaluating a risk source of a construction accident of a super high-rise building, which on the one hand improves the level of construction safety management, thereby reducing accident rate, and saving cost and construction period; on the other hand, social problems due to safety accidents will also be reduced.
The invention also aims to provide a device for evaluating the risk source of the construction accident of the super high-rise building.
In order to achieve the above object, an embodiment of the present invention provides a method for evaluating a risk source of a construction accident of a super high-rise building, including: calculating by combining a fuzzy theory to obtain the probability of the risk load of each type of risk source under the industry average level, and calculating by utilizing random expression to obtain the average probability of the risk load of each type of risk source; determining the influence weights of different risk resistances on the risk load; correcting the average probability of the risk load of each type of risk source according to the risk resistance level of the project to be evaluated and the influence weight; and calculating to obtain a risk source evaluation result of the project to be evaluated according to the corrected average probability of the risk load of each type of risk source and the influence degree of the risk accident of each type of risk source.
According to the method for evaluating the risk source of the construction accident of the super high-rise building, disclosed by the embodiment of the invention, on the basis of researching the risk load, the risk resistance is researched and analyzed, the potential risk is found out, meanwhile, the weak part of enterprise management is determined, the risk problem is solved in a targeted manner, on one hand, the construction safety management level is improved, so that the accident rate is reduced, and the cost and the construction period are saved; on the other hand, social problems caused by safety accidents can be reduced; especially for the continuous emerging of more and more super high-rise buildings, the achievement has better application prospect and brings higher social benefit and economic benefit.
In addition, the method for evaluating the risk source of the construction accident of the super high-rise building according to the embodiment of the invention can also have the following additional technical features:
further, in one embodiment of the present invention, wherein the risk load is a plurality of risk factors affecting the risk source and causing construction accidents; the risk resistance is a technical measure and a management measure for coping with the plurality of risk factors.
Further, in an embodiment of the present invention, the method further includes: collecting construction accident data; classifying and grading the building construction accident risk sources according to the building construction accident data; analyzing the building construction accident data through a preset analysis method to obtain a logical relationship between each level of risk sources in each type of risk sources; and establishing a risk load and risk resistance index system of each type of risk source according to the logical relationship between each level of risk source in each type of risk source, and establishing a fault tree of each type of risk source according to the risk load and risk resistance index system of each type of risk source.
Further, in an embodiment of the present invention, before calculating, by combining with fuzzy theory, the probability of occurrence of the risk load of each type of risk source at the industry average level, the method further includes: and when the probability of the risk accident of the project to be evaluated is calculated, adopting a fault tree to decompose the risk accident into the risk loads of a plurality of risk sources.
Further, in an embodiment of the present invention, the risk source includes any one of a tower crane, a construction platform, a construction hoist, concrete pumping, a main structure, a curtain wall, a temporary support, a deep foundation pit, an edge protection, and a temporary fire protection.
In order to achieve the above object, an embodiment of another aspect of the present invention provides an apparatus for evaluating a risk source of a construction accident of a super high-rise building, including: the calculation module is used for calculating and obtaining the probability of the risk load occurrence of each type of risk source under the industry average level by combining a fuzzy theory, and calculating and obtaining the average probability of the risk load occurrence of each type of risk source by utilizing random expression; the determining module is used for determining the influence weight of different risk resistances on the risk load; the correction module is used for correcting the average probability of the risk load of each type of risk source according to the risk resistance and the influence weight of the project to be evaluated; and the evaluation module is used for calculating to obtain a risk source evaluation result of the project to be evaluated according to the corrected average probability of the risk load of each type of risk source and the influence degree of the risk accident of each type of risk source.
According to the risk source evaluation device for the construction accident of the super high-rise building, disclosed by the embodiment of the invention, on the basis of researching risk load, the risk resistance is researched and analyzed, the potential risk is found out, meanwhile, the weak part of enterprise management is determined, the risk problem is solved in a targeted manner, on one hand, the construction safety management level is improved, so that the accident rate is reduced, and the cost and the construction period are saved; on the other hand, social problems caused by safety accidents can be reduced; especially for more and more super high-rise buildings which are continuously emerging, the achievement has better application prospect and brings higher social benefit and economic benefit.
In addition, the device for evaluating the risk source of the construction accident of the super high-rise building according to the above embodiment of the invention may further have the following additional technical features:
further, in one embodiment of the present invention, wherein the risk load is a plurality of risk factors affecting the risk source and causing construction accidents; the risk resistance is a technical measure and a management measure for coping with the plurality of risk factors.
Further, in an embodiment of the present invention, the method further includes: the acquisition module is used for acquiring construction accident data; the classification and grading module is used for classifying and grading the building construction accident risk sources according to the building construction accident data; the analysis module is used for analyzing the building construction accident data through a preset analysis method to obtain the logical relationship between each level of risk source in each type of risk source; and the establishing module is used for establishing a risk load and risk resistance index system of each type of risk source according to the logical relationship between each type of risk source in each type of risk source, and establishing a fault tree of each type of risk source according to the risk load and risk resistance index system of each type of risk source.
Further, in an embodiment of the present invention, the method further includes: and the decomposition module is used for decomposing the risk accident into the risk loads of a plurality of risk sources by adopting a fault tree when calculating the probability of the risk accident of the project to be evaluated before calculating the probability of the risk load of each type of risk source under the industry average level by combining a fuzzy theory.
Further, in an embodiment of the present invention, the risk source includes any one of a tower crane, a construction platform, a construction hoist, concrete pumping, a main structure, a curtain wall, a temporary support, a deep foundation pit, an edge protection, and a temporary fire protection.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart of a method for assessing a risk source of a construction accident for a super high-rise building according to an embodiment of the present invention;
FIG. 2 is a flowchart of a method for assessing a risk source of a super high-rise building construction accident according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a fault tree for tower crane inclination or collapse according to one embodiment of the invention;
FIG. 4 is a schematic diagram of a fault tree in which a tower wall collides, a tower crane mounting and dismounting device collapses, and a hanging object falls according to an embodiment of the invention;
FIG. 5 is a schematic diagram of a construction platform jacking failure, construction platform deformation, tilting or collapse failure tree, according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a construction elevator cage top-impact, fall fault tree according to one embodiment of the present invention;
FIG. 7 is a schematic illustration of a fault tree for a construction hoist collapse, a construction hoist electrical shock, according to one embodiment of the present invention;
FIG. 8 is a schematic diagram of a fault tree of concrete pump plugging, pipe bursting and collapsing according to an embodiment of the invention;
FIG. 9 is a schematic diagram of a fault tree of a steel structure operation platform in case of an overturning fall, an electric shock, and a scaffold accident according to an embodiment of the present invention;
FIG. 10 is a fault tree diagram illustrating collapse of a steel structure according to one embodiment of the present invention;
FIG. 11 is a fault tree diagram of a fire in accordance with one embodiment of the present invention;
figure 12 is a schematic view of a fault tree of a collapsed reinforced concrete structure according to one embodiment of the present invention;
FIG. 13 is a schematic diagram of a fault tree of an electric shock according to another embodiment of the present invention;
FIG. 14 is a fault tree diagram of a fire in accordance with another embodiment of the invention;
FIG. 15 is a fault tree schematic of a curtain wall construction drop according to one embodiment of the present invention;
FIG. 16 is a schematic view of a fault tree falling from high altitude in curtain wall construction according to one embodiment of the invention;
FIG. 17 is a fault tree diagram of a gondola collapse crash event according to an embodiment of the present invention;
FIG. 18 is a schematic view of a fault tree in accordance with one embodiment of the present invention in which a section steel bracket is deformed or collapsed;
fig. 19 is a schematic view of a deformed and collapsed fault tree of a pile-anchor supporting foundation pit according to an embodiment of the invention;
fig. 20 is a schematic view of a deformed and collapsed fault tree of an inner support retaining and protecting foundation pit according to an embodiment of the invention;
FIG. 21 is a schematic view of a fault tree of a four-mouth five-limb high drop according to one embodiment of the invention;
FIG. 22 is a schematic view of a fault tree upon impact by a four-mouth five-limb object according to one embodiment of the invention;
fig. 23 is a schematic structural diagram of a risk source evaluation device for a super high-rise building construction accident according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The method and the device for evaluating the risk source of the construction accident of the super high-rise building according to the embodiment of the invention are described below with reference to the accompanying drawings, and first, the method for evaluating the risk source of the construction accident of the super high-rise building according to the embodiment of the invention will be described with reference to the accompanying drawings.
Fig. 1 is a flowchart of a method for assessing a risk source of a construction accident of a super high-rise building according to an embodiment of the present invention.
As shown in fig. 1, the method for evaluating the risk source of the construction accident of the super high-rise building comprises the following steps:
in step S101, calculating by combining a fuzzy theory to obtain the probability of occurrence of the risk load of each type of risk source under the industry average level, and calculating by using a random expression to obtain the average probability of occurrence of the risk load of each type of risk source.
Wherein, the risk source includes any one of tower crane, construction platform, construction elevator, concrete pumping, major structure, curtain, interim support, deep basal pit, face limit protection and interim fire control. The risk load is various risk factors that affect the safety of the risk source and may cause construction accidents.
It can be understood that, as shown in fig. 2, the embodiment of the present invention combines a fuzzy theory to evaluate the occurrence probability of the risk load at the industry average level, and obtains the average probability of the risk load occurrence through a random expression.
Particularly, for construction projects, it is very difficult to obtain an accurate probability of occurrence of a risk load, mainly because an event in a construction process is greatly influenced by an external environment, has poor regularity and is difficult to directly predict, and a large amount of data is needed for determining the occurrence probability through statistical data of historical accidents, but the frequency of occurrence of construction accidents is low and the records are not detailed and comprehensive enough. At the same time, the time of occurrence of the risk load is ambiguous due to ambiguity of the definition of the event limits and the inaccuracy of the judgment. Therefore, the assessment of the risk load occurrence probability takes the form of a linguistic description and a fuzzy number to make the assessment. And finally, calculating based on a fuzzy theory to obtain a theoretical calculation value of the risk load occurrence probability, namely obtaining the risk source category, the risk source detail and the occurrence probability of the bottommost risk load of the logic structure of the risk load, and then utilizing the logic structure to recur upwards on the basis to obtain the risk occurrence probability of a certain risk source.
In step S102, the weight of the impact of the different risk resistances on the risk load is determined.
Among these, risk resistance is the technical and regulatory measure to cope with these risk factors.
It will be appreciated that the impact of different measures on the risk load is different for risk resistance, and the impact of risk resistance on risk can be determined empirically.
In step S103, the average probability of the risk load occurrence of each type of risk source is corrected according to the risk resistance level and the influence weight of the item to be evaluated.
The item to be evaluated is an item that needs risk source evaluation, for example, a specific item. Specifically, as shown in fig. 2, in the embodiment of the present invention, the evaluation of the risk resistance implementation level of a specific project may be used to determine the influence level of the risk resistance level of the project on the risk load occurrence probability, and correct the average probability of the risk load occurrence, so that the corrected risk load occurrence probability is the risk load occurrence probability of the project.
In step S104, a risk source evaluation result of the item to be evaluated is obtained by calculating according to the corrected average probability of the risk load of each type of risk source and the influence degree of the risk accident of each type of risk source.
It can be appreciated that, as shown in fig. 2, the embodiment of the present invention determines the degree of influence of the risk accident, and further calculates the risk level of the specific project.
It should be noted that, the embodiment of the present invention provides a systematic, standardized, and streamlined method, and all elements (risk source, risk load, risk resistance, and the like) in the evaluation model can be modified and expanded, that is, the risk load and risk resistance system is not constant, and can change according to the actual situation of the project, and the risk level of the project can be obtained according to the proposed methodology after modification.
In addition, the method of the embodiment of the present invention may also be applied to the evaluation of the major risk source of the construction accident of the super high-rise building.
Further, in an embodiment of the present invention, the method further includes: collecting construction accident data; classifying and grading the building construction accident risk sources according to the building construction accident data; analyzing the building construction accident data by a preset analysis method to obtain a logical relationship between each level of risk sources in each type of risk sources; and establishing a risk load and risk resistance index system of each type of risk source according to the logical relationship between each type of risk source in each type of risk source, and establishing a fault tree of each type of risk source according to the risk load and risk resistance index system of each type of risk source.
The preset analysis method may be understood as analysis of key cause of an accident, a coping method, and technical analysis, and a person skilled in the art may select a specific analysis method according to an actual situation, which is not specifically limited herein.
Specifically, taking a super high-rise building as an example, the embodiment of the invention also establishes a super high-rise building risk load and risk resistance index system which comprises ten types of risk sources including a tower crane, a construction platform, a construction elevator, concrete pumping, a main structure, a curtain wall, a temporary support, a deep foundation pit, edge protection and temporary fire protection. By collecting the ultra-high-rise building construction risk accident cases, for example, the accident cases can be collected in the form of interviews, and of course, the accident cases can also be collected in other ways, which are only used as examples and are not particularly limited. The embodiment of the invention can consult and comb related literature research at home and abroad, comb risk sources of accidents and classify and grade the risk sources; through the analysis of accident key cause, the coping method and the technical analysis, the cause chain and the evolution rule of related accidents are researched, the key cause and the logical relationship of the accidents are determined, and further, a risk load and risk resistance index system of each type of risk source is established, as shown in table 1. Wherein, the table 1 is a risk load and risk resistance index system table of each type of risk source.
TABLE 1
Further, in an embodiment of the present invention, before calculating, by combining with fuzzy theory, the probability of occurrence of the risk load of each type of risk source at the industry average level, the method further includes: when the probability of the risk accident of the project to be evaluated is calculated, the fault tree is adopted to decompose the risk accident into the risk loads of a plurality of risk sources.
Specifically, the idea of risk assessment is to consider the probability and the consequence of occurrence of a risk accident respectively, and then comprehensively evaluate the magnitude of the project risk. When the probability of the occurrence of the risk accident is evaluated, a fault tree method is adopted to decompose the risk accident into a series of basic events (namely risk loads), the occurrence probability of the risk load is firstly determined, the occurrence probability of the top-end risk accident is further calculated through a fault tree calculation rule, and the fault trees constructed according to the construction risk load of the super high-rise building and the risk resistance index system are shown in fig. 3 to fig. 22. The main problem of the conventional risk evaluation is that the evaluation result is too subjective, and due to different construction experiences of different experts, the judgment of the same risk event (namely, the risk load) may be different, and the main reason for the difference is that for different projects, the technical and management measures (namely, the risk resistance) for preventing the occurrence of the risk event are different, and the risk resistance level of one project affects the change of the risk load occurrence probability of the project. Therefore, the risk assessment idea is to evaluate the risk load and the risk resistance separately, firstly calculate the probability of the risk load under the average industrial level, and then calculate the implementation condition of the risk resistance and the influence of the risk resistance on the probability of the risk load. According to the construction risk load and risk resistance index system of the super high-rise building, extracted risk resistance lists corresponding to various risk sources are shown in tables 2 to 11.
TABLE 2 Tower crane engineering
TABLE 3 construction platform
TABLE 4 concrete pumping construction
TABLE 5 Steel Structure
TABLE 6 reinforced concrete structure
Watch 7 electric shock accident
TABLE 8 fire hazard
Table 9 section steel support frame
Table 10 deep foundation pit
Watch 11 edge protection
According to the method for evaluating the risk source of the construction accident of the super high-rise building, which is provided by the embodiment of the invention, on the basis of researching the risk load, the risk resistance is researched and analyzed, the potential risk is found out, meanwhile, the weak part of enterprise management is determined, the risk problem is solved in a targeted manner, on one hand, the construction safety management level is improved, so that the accident rate is reduced, and the cost and the construction period are saved; on the other hand, social problems caused by safety accidents can be reduced; especially for the continuous emerging of more and more super high-rise buildings, the achievement has better application prospect and brings higher social benefit and economic benefit.
Next, a risk source evaluation device for a construction accident of a super high-rise building according to an embodiment of the present invention will be described with reference to the drawings.
Fig. 23 is a schematic structural diagram of a risk source evaluation device for a super high-rise building construction accident according to an embodiment of the present invention.
As shown in fig. 23, the device 10 for evaluating a risk source of a construction accident for a super high-rise building includes: a calculation module 100, a determination module 200, a correction module 300, and an evaluation module 400.
The calculation module 100 is configured to calculate, by combining with a fuzzy theory, a probability of occurrence of a risk load of each type of risk source at an industry average level, and calculate, by using a random expression, an average probability of occurrence of a risk load of each type of risk source. The determination module 200 is used for determining the weight of the impact of different risk resistances on the risk load. The correcting module 300 is used for correcting the average probability of the risk load occurrence of each type of risk source according to the risk resistance level and the influence weight of the item to be evaluated. The evaluation module 400 is configured to calculate a risk source evaluation result of the item to be evaluated according to the corrected average probability of the risk load of each type of risk source and the influence degree of the risk accident of each type of risk source. On one hand, the device 10 of the embodiment of the invention improves the construction safety management level, thereby reducing the accident rate, saving the cost and the construction period; on the other hand, social problems due to safety accidents will also be reduced.
Further, in one embodiment of the present invention, among others, the risk load is a plurality of risk factors that affect the risk source and cause construction accidents; risk resistance is a technical measure and a management measure for coping with various risk factors.
Further, in one embodiment of the present invention, the apparatus 10 of the embodiment of the present invention further comprises: the device comprises an acquisition module, a classification and grading module, an analysis module and an establishment module.
The acquisition module is used for acquiring construction accident data. And the classification and grading module is used for classifying and grading the building construction accident risk sources according to the building construction accident data. The analysis module is used for analyzing the building construction accident data through a preset analysis method to obtain the logical relationship between each level of risk sources in each type of risk sources. The establishing module is used for establishing a risk load and risk resistance index system of each type of risk source according to the logical relationship between each type of risk source in each type of risk source, and establishing a fault tree of each type of risk source according to the risk load and risk resistance index system of each type of risk source.
Further, in one embodiment of the present invention, the apparatus 10 of the embodiment of the present invention further comprises: and (5) decomposing the module. The decomposition module is used for decomposing the risk accidents into the risk loads of a plurality of risk sources by adopting a fault tree when calculating the probability of the risk accidents of the project to be evaluated before calculating the probability of the risk loads of each type of risk sources under the industry average level by combining the fuzzy theory.
Further, in an embodiment of the present invention, the risk source includes any one of a tower crane, a construction platform, a construction hoist, concrete pumping, a main structure, a curtain wall, a temporary support, a deep foundation pit, a limb protection, and a temporary fire protection.
It should be noted that the above explanation of the embodiment of the method for evaluating a risk source of a construction accident of a super high-rise building is also applicable to the device for evaluating a risk source of a construction accident of a super high-rise building of this embodiment, and is not repeated here.
According to the risk source evaluation device for the construction accident of the super high-rise building, which is provided by the embodiment of the invention, on the basis of researching risk load, risk resistance is researched and analyzed, potential risks are found out, meanwhile, weak points of enterprise management are determined, and the risk problem is solved in a targeted manner, so that on one hand, the construction safety management level is improved, the accident rate is reduced, and the cost and the construction period are saved; on the other hand, social problems caused by safety accidents are also reduced; especially for more and more super high-rise buildings which are continuously emerging, the achievement has better application prospect and brings higher social benefit and economic benefit.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (6)
1. A method for evaluating a risk source of a construction accident of a super high-rise building is characterized by comprising the following steps:
calculating by combining a fuzzy theory to obtain the probability of the risk load of each type of risk source under the industry average level, and calculating by utilizing random expression to obtain the average probability of the risk load of each type of risk source; the risk source comprises any one of a tower crane, a construction platform, a construction elevator, concrete pumping, a main body structure, a curtain wall, a temporary support, a deep foundation pit, limb protection and temporary fire fighting;
determining the influence weight of different risk resistances on the risk load;
correcting the average probability of the risk load of each type of risk source according to the risk resistance level of the project to be evaluated and the influence weight; and
calculating to obtain a risk source evaluation result of the project to be evaluated according to the corrected average probability of the risk load of each type of risk source and the influence degree of the risk accident of each type of risk source;
wherein the risk load is a plurality of risk factors which affect the risk source and cause construction accidents;
the risk resistance is a technical measure and a management measure for coping with the plurality of risk factors.
2. The method of claim 1, further comprising:
collecting construction accident data;
classifying and grading the building construction accident risk sources according to the building construction accident data;
analyzing the building construction accident data through a preset analysis method to obtain a logic relation between each level of risk source in each type of risk source;
and establishing a risk load and risk resistance index system of each type of risk source according to the logical relationship between each type of risk source in each type of risk source, and establishing a fault tree of each type of risk source according to the risk load and risk resistance index system of each type of risk source.
3. The method of claim 2, further comprising, before calculating the probability of occurrence of the risk load of each type of risk source at the industry average level in combination with fuzzy theory:
and when the probability of the risk accident of the project to be evaluated is calculated, adopting a fault tree to decompose the risk accident into the risk loads of a plurality of risk sources.
4. The utility model provides a super high-rise building construction accident risk source evaluation device which characterized in that includes:
the calculation module is used for calculating and obtaining the probability of the risk load occurrence of each type of risk source under the industry average level by combining a fuzzy theory, and calculating and obtaining the average probability of the risk load occurrence of each type of risk source by utilizing random expression; the risk source comprises any one of a tower crane, a construction platform, a construction elevator, concrete pumping, a main body structure, a curtain wall, a temporary support, a deep foundation pit, limb protection and temporary fire fighting;
the determining module is used for determining the influence weight of different risk resistances on the risk load;
the correction module is used for correcting the average probability of the risk load of each type of risk source according to the risk resistance level of the project to be evaluated and the influence weight; and
the evaluation module is used for calculating to obtain a risk source evaluation result of the project to be evaluated according to the corrected average probability of the risk load of each type of risk source and the influence degree of the risk accident of each type of risk source;
wherein the risk load is a plurality of risk factors which affect the risk source and cause construction accidents;
the risk resistance is a technical measure and a management measure for coping with the plurality of risk factors.
5. The apparatus of claim 4, further comprising:
the acquisition module is used for acquiring construction accident data;
the classification and grading module is used for classifying and grading the building construction accident risk sources according to the building construction accident data;
the analysis module is used for analyzing the building construction accident data through a preset analysis method to obtain the logical relationship between each level of risk source in each type of risk source;
and the establishing module is used for establishing a risk load and risk resistance index system of each type of risk source according to the logical relationship between each type of risk source in each type of risk source and establishing a fault tree of each type of risk source according to the risk load and risk resistance index system of each type of risk source.
6. The apparatus of claim 4, further comprising:
and the decomposition module is used for adopting a fault tree to decompose the risk accident into the risk loads of a plurality of risk sources when calculating the probability of the risk accident of the project to be evaluated before calculating the probability of the risk load of each type of risk source under the average industry level by combining a fuzzy theory.
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