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CN-121981515-A - High formwork project security risk evaluation method based on material element extension

CN121981515ACN 121981515 ACN121981515 ACN 121981515ACN-121981515-A

Abstract

The embodiment of the invention provides a high formwork project security risk evaluation method based on material element extension. The method comprises the steps of obtaining a plurality of security risk influence factors of a high formwork project, constructing a security risk evaluation index weight analysis model according to the plurality of security risk influence factors, calculating and determining influence weights of all security risk evaluation indexes based on the security risk evaluation index weight analysis model, constructing a high formwork project object extensible security risk evaluation model, inputting index data of an object to be evaluated into the high formwork project object extensible security risk evaluation model, sequentially calculating single index association degree, criterion layer comprehensive association degree and target layer comprehensive association degree of each evaluation index membership risk level according to the influence weights, determining the security risk level of the high formwork project according to the target layer comprehensive association degree, and obtaining a security evaluation result according to the security risk level. Based on the above, the embodiment of the invention not only can objectively determine the risk grade, but also can quantify the risk situation.

Inventors

  • LI JUN

Assignees

  • 五邑大学

Dates

Publication Date
20260505
Application Date
20251205

Claims (10)

  1. 1. A high formwork project security risk evaluation method based on the extension of the physical elements comprises the following steps: Acquiring a plurality of security risk influence factors of a high formwork project; constructing a safety risk evaluation index weight analysis model according to a plurality of safety risk influence factors, wherein the safety risk evaluation index weight analysis model is a hierarchical structure model comprising a target layer, a criterion layer and an index layer, and the index layer comprises a plurality of evaluation indexes; based on the security risk evaluation index weight analysis model, calculating and determining the influence weight of each security risk evaluation index; constructing a high formwork project matter element extension security risk evaluation model; Inputting index data of the to-be-evaluated object element into the high-formwork project object element extension safety risk evaluation model, and sequentially calculating single-index association degree, criterion layer comprehensive association degree and target layer comprehensive association degree of each evaluation index membership risk level by combining the influence weights; determining the security risk level of the high formwork project according to the comprehensive relevance of the target layer; and obtaining a security evaluation result corresponding to the high formwork project according to the security risk level.
  2. 2. The method according to claim 1, wherein the calculating the influence weight of each security risk evaluation index based on the security risk evaluation index weight analysis model includes: Based on the safety risk evaluation index weight analysis model, evaluating the importance of factor elements in the same level of the hierarchical structure model relative to factor elements in the previous level according to expert opinion, and determining the pairwise comparison result of the importance among all safety risk influence factors; constructing a judgment matrix according to the comparison results of importance among all security risk influence factors; Judging whether the judging matrix has consistency or not to obtain a judging result; And when the judgment result is that the judgment matrix has consistency, calculating and determining the influence weight of each safety risk evaluation index.
  3. 3. The method of claim 2, wherein said determining whether the determination matrix has consistency comprises: Carrying out line element product on the judgment matrix to obtain a line element product result; exponentiation of the product result of the row element to obtain an exponentiation result; normalizing the power result to obtain a normalized result; calculating to obtain the maximum characteristic root of the judgment matrix according to the normalization result; calculating to obtain a consistency index according to the maximum characteristic root; Obtaining a consistency ratio according to the ratio of the consistency index to the average random consistency index; and judging whether the judgment matrix has consistency according to the consistency ratio.
  4. 4. The method according to claim 2, wherein the method further comprises: And when the judging result is that the judging matrix does not have consistency, establishing a new judging matrix again according to expert opinion, and judging whether the new judging matrix has consistency again until the judging result is that the new judging matrix has consistency.
  5. 5. The method of claim 1, wherein a high formwork security risk assessment is used as the target layer, an organization management, a design management, a construction management, a material management are used as the criterion layer, and each sub-factor of the criterion layer is used as the index layer.
  6. 6. The method of claim 5, wherein the organization management comprises a safety management system, a safety supervision inspection, a safety technical engagement, a safety education training, the design management comprises a safety inspection, an applicable specification, a scheme review, a drawing management, the construction management comprises a frame construction, a foundation bearing capacity, an inspection acceptance, a construction monitoring, and the material management comprises a steel pipe quality, a fastener quality, a template quality, and a component quality.
  7. 7. The method of claim 1, wherein the constructing the high formwork project primitive extension security risk assessment model comprises: dividing the security risk of the high formwork project into a plurality of risk grades, and constructing a risk evaluation set; Determining a classical domain element matrix according to the risk level, the evaluation index and the allowed magnitude range; Determining a node domain element matrix according to the evaluation indexes and the total magnitude range of the evaluation indexes under all risk levels; determining an element matrix to be evaluated according to the evaluation indexes and the actual measurement values thereof; And constructing a high-formwork project element extension security risk evaluation model according to the classical domain element matrix, the node domain element matrix and the element matrix to be evaluated.
  8. 8. The method according to claim 1, wherein the influencing weights include a first weight value of the evaluation index relative to the criterion layer and a second weight value of the criterion layer relative to the target layer, and the sequentially calculating the single index association degree, the criterion layer comprehensive association degree and the target layer comprehensive association degree of each evaluation index membership risk level by combining the influencing weights includes: calculating the single index association degree according to the distance from the index data of the to-be-evaluated object element to the level interval; calculating the criterion layer comprehensive association degree according to the single index association degree and the first weight value; and calculating the target layer comprehensive relevance according to the criterion layer comprehensive relevance and the second weight value.
  9. 9. The method according to claim 8, wherein the single-index association degree K j (v i ) represents a degree to which the magnitude V i of the index C i of the object to be evaluated is subordinate to the risk level V j , and the calculation formula is as follows: Wherein, |X ji |=|b ji -a ji |, representing the length of the interval |X ji |, ρ (v i ,X pi ) is the distance of the point v i to the interval X pi ; ρ (v i ,X ji ) is the distance from point v i to interval X ji =(a ji ,b ji , calculated as: When the calculated K j (v i ) is more than or equal to 0 and more than or equal to 0, v i is represented as belonging to the interval X ji , and the larger the value is, the higher the membership degree is, and when the calculated K j (v i ) is less than or equal to 0, v i is represented as not belonging to the interval X ji , and the larger the value is, the closer the value is to the grade is; For each index B k of the criterion layer, the comprehensive association degree of the index B k belonging to the risk level V j is obtained by weighting the association degree and the weight of each index C i , and the calculation formula of the comprehensive association degree K j (B k ) of the criterion layer is as follows: Wherein I k represents a set of all the indices belonging to the criterion layer B k , and d i is a weight value of each index for the criterion layer B k ; The overall association degree of the security risk of the high formwork project belongs to the risk grade V j , the overall association degree of each criterion B k and the weight of the overall association degree are obtained, and the calculation formula of the overall association degree K j (A) of the target layer is as follows: where D k represents the weight value of criterion layer B k for the target layer.
  10. 10. The method of claim 1, wherein the determining the security risk level of the high formwork item according to the target layer comprehensive relevance comprises: Obtaining a relevance vector according to the comprehensive relevance of the target layer; and determining the security risk level of the high formwork item according to the association degree vector and a preset maximum membership rule.

Description

High formwork project security risk evaluation method based on material element extension Technical Field The embodiment of the invention relates to the technical field of building safety evaluation, in particular to a high formwork project safety risk evaluation method based on material element extension. Background With the continuous deep progress of urban construction in China, large public buildings, super high-rise buildings and complex industrial facilities are increasing. In the construction process of these projects, a tall formwork support system (simply referred to as a "tall formwork") is widely used as a critical temporary structure for large-span, high-space concrete pouring projects. Once the high formwork collapses, huge safety accidents of group death and group injury are often caused, and catastrophic casualties, economic losses and social effects are brought. Therefore, scientific, accurate and prospective safety risk evaluation is a vital and challenging link in the safety management of building construction. The traditional safety management is mostly dependent on the experience judgment and qualitative inspection of field personnel, and has the defects of strong subjectivity, insufficient systematicness, incapability of quantification and the like. Disclosure of Invention The embodiment of the invention provides a high formwork project security risk evaluation method based on the extension of the physical elements, which applies a physical element extension security risk evaluation model to the high formwork project security risk evaluation, so that the risk level can be objectively determined, the risk situation can be more quantized, a scientific basis is provided for the process control and the prospective management of the risk, the upgrade from static diagnosis to dynamic perception is realized, the evaluation result can reflect the real situation in the system, and the pertinence and the efficiency of security management and control are improved. The embodiment of the invention provides a high formwork project security risk evaluation method based on material element extension, which comprises the following steps: Acquiring a plurality of security risk influence factors of a high formwork project; constructing a safety risk evaluation index weight analysis model according to a plurality of safety risk influence factors, wherein the safety risk evaluation index weight analysis model is a hierarchical structure model comprising a target layer, a criterion layer and an index layer, and the index layer comprises a plurality of evaluation indexes; based on the security risk evaluation index weight analysis model, calculating and determining the influence weight of each security risk evaluation index; constructing a high formwork project matter element extension security risk evaluation model; Inputting index data of the to-be-evaluated object element into the high-formwork project object element extension safety risk evaluation model, and sequentially calculating single-index association degree, criterion layer comprehensive association degree and target layer comprehensive association degree of each evaluation index membership risk level by combining the influence weights; determining the security risk level of the high formwork project according to the comprehensive relevance of the target layer; and obtaining a security evaluation result corresponding to the high formwork project according to the security risk level. In some embodiments, the calculating, based on the security risk evaluation index weight analysis model, an impact weight of each security risk evaluation index includes: Based on the safety risk evaluation index weight analysis model, evaluating the importance of factor elements in the same level of the hierarchical structure model relative to factor elements in the previous level according to expert opinion, and determining the pairwise comparison result of the importance among all safety risk influence factors; constructing a judgment matrix according to the comparison results of importance among all security risk influence factors; Judging whether the judging matrix has consistency or not to obtain a judging result; And when the judgment result is that the judgment matrix has consistency, calculating and determining the influence weight of each safety risk evaluation index. In some embodiments, the determining whether the determination matrix has consistency comprises: Carrying out line element product on the judgment matrix to obtain a line element product result; exponentiation of the product result of the row element to obtain an exponentiation result; normalizing the power result to obtain a normalized result; calculating to obtain the maximum characteristic root of the judgment matrix according to the normalization result; calculating to obtain a consistency index according to the maximum characteristic root; Obtaining a consistency ratio according to the rati