Post-earthquake functional evaluation method for medical buildings considering member-department-floor coupling

Abstract

To provide a post-earthquake functional evaluation method for medical buildings that takes into account member-department-floor coupling.SOLUTION: The method establishes a mapping relationship between departments and floors of a medical building, realizes a member-department-floor multilayered functional coupling relationship, and associates the seismic damage conditions of members with the overall loss of medical functions of the medical building. Thus, according to the damage probability of members in each medical department under different earthquake scenarios, the post-earthquake functional failure probability of the whole medical building is obtained. Furthermore, the vulnerable paths of the medical system functions of the medical building are identified, and strategies for improving the seismic resilience of the medical building are determined.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to the technical field of buildings, and more particularly to a method for post-earthquake functional evaluation of medical buildings taking into account the connections between components, departments and floors. [Background technology]

[0002] Medical buildings are considered one of the most important strategic facilities in disasters and play a crucial role in disaster and emergency relief efforts, especially earthquake emergency relief efforts. Data statistics show that 97% of earthquake casualties occur within 30 minutes of the main shock. Therefore, the local medical system's emergency response plays a crucial role in earthquake emergency relief and emergency medical care. However, past earthquakes have resulted in damage to medical facilities, reducing the hospital's ability to recover its medical functions. Traditional post-earthquake medical function assessment techniques for medical buildings face challenges, such as difficulty in considering the impact of floor-by-floor and department-by-department on medical functions and a lack of identification and display of vulnerable pathways that affect post-earthquake medical functions. Summary of the Invention [Means for solving the problem]

[0003] To solve the above problem, an embodiment of the present invention includes the steps of: obtaining a fault tree model of a department, where the fault tree model of the department is established according to a mapping relationship between components included in each medical department in a medical building and the overall medical function of the medical department; obtaining the distribution and number of each medical department on a floor in the medical building, and establishing a multi-level component-department-floor connection relationship for the entire medical building based on the fault tree model of the department, thereby forming a fault tree model of the medical building; obtaining an elastic-plastic analysis model of the medical building, and performing an elastic-plastic time history response analysis on the elastic-plastic analysis model to calculate engineering requirement parameters, and determining the fragility of each component. The present invention provides a method for evaluating the post-earthquake functionality of a medical building that takes into account the connections between components, departments, and floors, the method comprising the steps of: determining the damage probability of each of the components in a predetermined earthquake scene based on the structural information and the engineering requirement parameters; determining the post-earthquake functionality failure probability of the medical building in the predetermined earthquake scene based on the damage probability of each of the components in the predetermined earthquake scene and the multi-level connection relationships between components, departments, and floors of the medical building; and identifying vulnerable paths of the medical functions of the medical building in the predetermined earthquake scene based on the post-earthquake functionality failure probability in each of the predetermined earthquake scenes and each of the multi-level connection relationships, and determining a strategy for improving the seismic resistance of the medical building based on the vulnerable paths.

[0004] Optionally, the step of establishing a multi-hierarchical component-department-floor connection relationship for the entire medical building based on the fault tree model of the department includes the steps of determining the components included in each medical department based on floor attributes and department attributes of each of the components, wherein the components include structural components, non-structural components, and medical equipment of the medical building; and establishing a medical function logic of a component-department hierarchy through the department fault tree model based on the components included in each medical department and the distribution and number of each medical department in the medical building, and further introducing floor nodes, and establishing a multi-hierarchical component-department-floor connection relationship for the entire medical building.

[0005] Optionally, the step of establishing a multi-hierarchical component-department-floor connection relationship for the entire medical building includes determining a mapping relationship between the medical departments and floors of the medical building based on the distribution number of each medical department on the floor, and establishing a multi-hierarchical component-department-floor connection relationship by introducing a floor node into a fault tree.

[0006] Optionally, the step of obtaining an elastic-plastic analysis model of the medical building, performing an elastic-plastic time history response analysis on the elastic-plastic analysis model, and calculating engineering requirement parameters includes the steps of converting a building information model of the medical building into a corresponding elastic-plastic analysis model, performing an elastic-plastic time history response analysis on the elastic-plastic analysis model, and calculating engineering requirement parameters of the medical building structure, wherein the engineering requirement parameters include floor-to-floor displacement angles and floor accelerations.

[0007] Optionally, the method further comprises establishing a building information model of the medical building based on a predetermined multi-scale modeling algorithm.

[0008] Optionally, the step of identifying a vulnerable path of the medical functions of the medical building in the specified earthquake scene based on the post-earthquake functional failure probability in each of the specified earthquake scenes and each of the multi-level connection relationships includes mapping the damage probability and corresponding post-earthquake functional failure probability of components included in the medical department to a fault tree of the medical building, and obtaining a vulnerable path of the post-earthquake medical functions of the medical building based on the fault tree of the entire medical building.

[0009] Optionally, the improvement strategies include improving the seismic resistance of critical equipment on vulnerable routes, adjusting the location of critical departments on vulnerable routes, increasing the number of critical departments, and employing seismic isolation reinforcement.

[0010] An embodiment of the present invention includes an acquisition module used to acquire a fault tree model of a department, where the fault tree model of the department is established according to a mapping relationship between components included in each medical department in a medical building and the overall medical function of the medical department; an establishment module used to acquire the distribution and number of each medical department on a floor in a medical building, and establish a multi-level component-department-floor connection relationship for the entire medical building based on the fault tree model of the department, to form a fault tree model of the medical building; and an establishment module used to acquire an elastic-plastic analysis model of the medical building, perform an elastic-plastic time history response analysis on the elastic-plastic analysis model, calculate engineering requirement parameters, and obtain vulnerability information of each component and the engineering function. The present invention provides a post-earthquake function evaluation system for a medical building that takes into account the connections between components, departments, and floors, the system comprising: a first determination module that determines the damage probability of each of the components in a predetermined earthquake scene based on scientific requirement parameters; a second determination module that is used to determine the post-earthquake function failure probability of the medical building in the predetermined earthquake scene based on the damage probability of each of the components in the predetermined earthquake scene and the multi-hierarchical connection relationship between components, departments, and floors of the medical building; and a third determination module that is used to identify vulnerable paths of medical functions of the medical building in the predetermined earthquake scene based on the post-earthquake function failure probability in each of the predetermined earthquake scenes and each of the connection relationships, and to determine a seismic improvement strategy for the medical building based on the vulnerable paths.

[0011] An embodiment of the present invention provides an electronic device including a processor and a storage device, wherein a computer program is stored in the storage device, and the computer program performs the above-described method when executed by the processor. [Effects of the Invention]

[0012] The method and system for evaluating the post-earthquake performance of medical buildings, taking into account the multi-level coupling of components, departments, and floors according to an embodiment of the present invention, reduces the computational complexity of the post-earthquake medical function evaluation, improves the evaluation efficiency of the post-earthquake medical function of medical buildings, realizes mapping between components, departments, and floors, and provides important data support for discovering seismic weaknesses in medical buildings and improving their seismic toughness. [Brief explanation of the drawings]

[0013] In order to more clearly describe the embodiments of the present invention or the technical solutions of the prior art, the drawings that need to be used to describe the embodiments or the prior art will be briefly described below. It will be apparent that the drawings described below are only embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings provided without any creative work. [Figure 1] FIG. 1 is a flowchart of a method for evaluating post-earthquake medical functions of a medical building according to an embodiment of the present invention. [Figure 2a] FIG. 2a is a fault tree model under the mapping relationship between departments and components according to an embodiment of the present invention. [Figure 2b] FIG. 2b is a fault tree model for classifying departments by medical function according to an embodiment of the present invention. [Figure 2c] FIG. 2c is a fault tree model for classifying medical departments by floor according to an embodiment of the present invention. [Figure 2d] FIG. 2d shows a fault tree model of a medical building according to an embodiment of the present invention. [Figure 3a] FIG. 3a is a model of a medical building according to an embodiment of the present invention. [Figure 3b] FIG. 3b is an elastic-plastic model of a medical building according to an embodiment of the present invention. [Figure 4] FIG. 4 is a schematic diagram of a medical function vulnerability route of a medical building according to an embodiment of the present invention. [Figure 5a]FIG. 5a shows a schematic diagram of the change in the probability of post-earthquake functional outage of the ICU room and outpatient ward after improving the earthquake resistance of key medical equipment in the medical function vulnerable path of a medical building according to an embodiment of the present invention. [Figure 5b] FIG. 5b is a schematic diagram of a comparison of the failure probability of ICU rooms on different floors according to an embodiment of the present invention. [Figure 5c] FIG. 5c is a schematic diagram of the change in the failure probability of ICU rooms after increasing the number of ICU rooms on the vulnerable path according to an embodiment of the present invention. [Figure 5d] FIG. 5d is a schematic diagram of a comparison of the failure probability of the earthquake-resistant structure and the earthquake-isolated structure of the medical building in an earthquake scenario according to an embodiment of the present invention. [Figure 6] FIG. 6 is a flowchart of post-earthquake functional evaluation and display of a medical building according to an embodiment of the present invention. [Figure 7] FIG. 7 is a schematic diagram showing the configuration of a post-earthquake medical function evaluation device for a medical building according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0014] In order to make the above-mentioned objects, features and advantages of the present invention clearer and easier to understand, specific embodiments of the present invention will be described in detail below with reference to the drawings. It should be understood that the specific embodiments described here are only used to interpret the present invention and are not intended to limit the present invention.

[0015] Currently, damage to medical facilities (including structural and non-structural components of medical buildings and medical equipment) in past earthquakes has reduced the hospital's ability to recover function. It is therefore necessary to evaluate existing medical buildings based on earthquake damage and functional loss, determine their seismic resilience level, clarify their seismic weaknesses, and provide data and decision-making support for implementing resilience improvement plans. Traditional methods primarily use indicator-based and function-based evaluation methods to evaluate hospitals after earthquakes, and the types of evaluations targeted are primarily the medical sector, specifically as follows:

[0016] (1) It is difficult to consider the impact of different floors and departments on the functioning of medical buildings. Traditional methods establish the functional logic of typical departments and implement an evaluation system for typical departments or functional systems in medical buildings. However, the seismic response of different floors is different, and the functional damage conditions of typical departments on the corresponding floors are also different. Because traditional methods have difficulty considering the impact on the overall functional evaluation of the same type of departments on different floors, traditional methods mainly focus on single departments.

[0017] (2) There is a lack of identification and performance improvement of vulnerable pathways that affect medical functions after earthquakes. Functional vulnerability pathways are important pathways formed by the components, departments, and medical functions that are most susceptible to damage in a medical building after an earthquake, and are of great significance in identifying weak points in the post-earthquake functionality of a medical building. After identifying functional vulnerability pathways, the seismic resistance of a medical building can be improved by increasing the number of backup components or strengthening their seismic resistance. However, most previous studies have pointed out that the most important equipment that affects the post-earthquake functionality of a medical building is limited to the component level, and that weak points on higher levels such as floors and departments are not identified and indicated.

[0018] To address the above-mentioned problems, an embodiment of the present invention provides a method, device, and electronic device for evaluating post-earthquake medical functions in a medical building, taking into account the multi-level connections between components, departments, and floors. The embodiment of the present invention will be described in detail below.

[0019] This embodiment provides a method for evaluating the post-earthquake medical functions of a medical building, taking into account the multi-level connections of components, departments, and floors. As shown in the flowchart of the method for evaluating the post-earthquake medical functions of a medical building in Figure 1, the method mainly includes the following steps:

[0020] S102: Obtain a fault tree model of the department, which is established according to the mapping relationship between the earthquake damage status of components included in each medical department in the medical building and the overall medical function of the medical department.

[0021] A typical department fault tree model is established according to a mapping relationship between each component and the department, which can relate the earthquake damage status of structural components, non-structural components and medical equipment in each medical department of the medical building to the loss of the overall medical function of the medical department.

[0022] S104: Obtain the distribution and number of each medical department on each floor in the medical building, and establish a multi-level connection relationship between components, departments, and floors for the entire medical building based on the department fault tree model, thereby forming a fault tree model for the medical building.

[0023] Specifically, first, the components included in each medical department are determined based on the floor attributes and department attributes of each component, and the components may include structural components, non-structural components, and medical equipment of the medical building. Next, based on the components included in each medical department and the distribution and number of each medical department in the medical building, a component-department hierarchy medical function logic is established through a department fault tree model, and floor nodes are further introduced to establish a multi-hierarchical component-department-floor connection relationship for the entire medical building. Optionally, a mapping relationship between the medical departments and the floors of the medical building is determined based on the distribution number of each medical department on the floor, and a floor node is introduced into the fault tree to establish a multi-hierarchical component-department-floor connection relationship.

[0024] In this example, the functional logic relationships between components and departments established in the fault tree model of the medical department are expanded, and floor nodes are introduced to consider the influence of the distribution of departments on the floors of the medical building, establishing multi-level functional connection relationships between components, departments, and floors to form a fault tree model of the medical building. The connection relationships can correlate the loss of medical functions of the departments with the loss of the overall medical functions of the medical building, thereby realizing the functional assessment of the medical building after an earthquake.

[0025] S106: Obtain an elastic-plastic analysis model of the medical building, perform an elastic-plastic time history response analysis on the elastic-plastic analysis model, calculate the engineering requirement parameters, and determine the damage probability of each component in a specified earthquake scenario based on the vulnerability information of each component and the engineering requirement parameters.

[0026] Optionally, a building information model of the medical building can be first established based on a predetermined multi-scale modeling algorithm, and then the building information model of the medical building can be converted into a corresponding elastic-plastic analysis model, and an elastic-plastic time history response analysis can be performed on the elastic-plastic analysis model to calculate the engineering requirement parameters of the medical building structure, wherein the engineering requirement parameters include floor-to-floor displacement angles and floor accelerations.

[0027] By performing elastic-plastic analysis calculations on the elastic-plastic analysis model of the medical building, engineering damage parameters (EDPs) such as floor-to-floor displacement angles and floor accelerations can be obtained. Based on these engineering damage parameters, the probability of failure (i.e., damage probability) of each component in different earthquake scenarios can be calculated in combination with the fragility curves of the structural components, non-structural components, and medical equipment related to the medical building.

[0028] The level of detail of the structural members in the building information model is greater than the level of detail of the non-structural members and the medical equipment.

[0029] S108: Determine the post-earthquake failure probability of the medical building in a predetermined earthquake scenario based on the damage probability of each component in a predetermined earthquake scenario and the multi-level connection relationship between components, departments, and floors of the medical building.

[0030] Based on the causal relationship between the earthquake damage information of the components included in each medical department and the medical functions of the medical department, and the causal relationship between the medical department and the floor of the medical building, a mapping relationship is established between the earthquake damage information of the components included in each medical department and the probability of post-earthquake functional failure of the medical department, thereby establishing a mapping relationship between each medical department and the failure probability of the medical building.

[0031] The input event of the fault tree model for the medical building is the earthquake damage probability of each component in the medical department, and the output event of the fault tree model is the post-earthquake failure probability of the medical building.

[0032] S110: Based on the post-earthquake functional failure probability and each multi-level connection relationship in each predetermined earthquake scenario, identify the vulnerable paths of the medical functions of the medical building in the predetermined earthquake scenario, and determine the seismic improvement strategy of the medical building based on the vulnerable paths.

[0033] Optionally, the damage probability of components included in the medical department and the corresponding post-earthquake function failure probability are mapped onto a fault tree of the medical building, and a vulnerable path of the post-earthquake medical functions of the medical building is obtained based on the fault tree of the entire medical building, and a seismic improvement strategy for the medical building is determined based on the vulnerable path.

[0034] The established multi-level functional connection relationship between components, departments, and floors is expressed in the form of a fault tree, and the failure probability of each component in a given earthquake scenario can be used to obtain the failure probability of departments and medical buildings for each level. The post-earthquake failure probability of each path is compiled to determine the vulnerable path in the medical function system, which can be obtained in real time.

[0035] Furthermore, according to the vulnerable path, it is possible to determine a strategy for improving the earthquake resistance of the medical building, such as improving the earthquake resistance of important equipment on the vulnerable path, adjusting the layout of important departments on the vulnerable path, increasing the number of important departments, and adopting seismic isolation reinforcement. The predetermined earthquake scene may be the magnitude value of the earthquake input by the user.

[0036] The post-earthquake medical function assessment method for a medical building according to an embodiment of the present invention establishes a mapping relationship between the components contained in each medical department and the department's medical functions, thereby establishing a mapping relationship between the departments and the floors of the medical building and realizing a multi-level functional connection relationship between components, departments, and floors. This allows the seismic damage status of the structural components, non-structural components, and medical equipment in each medical department of the medical building to be correlated with the loss of the medical building's overall medical functions. This allows the probability of the entire medical building's post-earthquake functional failure to be assessed in different earthquake scenarios according to the damage probability of each medical department's components in different earthquake scenarios, and the vulnerability paths of the medical system functions of the medical building in different earthquake scenarios to be obtained. Furthermore, the seismic resistance of the medical building can be accurately improved according to the obtained vulnerability paths. This assessment method reduces the computational complexity of post-earthquake medical function assessment, improves the efficiency of post-earthquake medical function assessment of a medical building, and realizes the mapping between components, departments, and floors, providing important data support for identifying seismic weaknesses in medical buildings and improving their seismic toughness.

[0037] In one embodiment, for a medical building, a mapping relationship between the earthquake damage information of components included in a medical department and the medical functions of the medical department, and a mapping relationship between the medical functions of the medical department and the overall medical functions of the medical building are established, and a multi-level component-department-floor combination relationship is formed, which can be specifically implemented by referring to the following steps:

[0038] Step (1): Determine the components included in each medical department based on the floor attribute and department attribute of each component.

[0039] The above components include structural components, non-structural components, and medical equipment of the medical building, and all components included in each medical department on each floor can be determined according to the floor attribute and department attribute of each component.

[0040] Step (2): Based on the causal relationship between the earthquake damage information of the components included in each medical department and the medical functions of the medical department, establish a mapping relationship between the earthquake damage information of the components included in each medical department and the probability of post-earthquake functional failure of the medical department.

[0041] Step (3): Based on the introduction of floor nodes, a mapping relationship between the medical functions of each medical department and the entire medical building is established, and a multi-level connection relationship of components-departments-floors is formed.

[0042] When each component in the medical department is destroyed, it affects the medical function of the department, and the impact of each component on the probability of the medical function failing is different, that is, the probability of the medical department's post-earthquake function failure is different, and as a result, the probability of the medical building's post-earthquake failure is different. For example, if a medical department contains multiple emergency carts, if one of the emergency carts is damaged, the impact on the probability of the medical department's failure is small, but the impact of the medical department's structural components on the probability of the medical department's failure is large.

[0043] The causal relationship between the damage status of all components included in the medical sector and the medical functions of the medical sector can be obtained according to the relationship between the damage status of all components included in the medical sector and each system in the medical sector (for example, the structural system, enclosure system, heating, ventilation, and air conditioning system, power supply system, water supply system, drug supply system, transport system, and specialized equipment system), and the relationship between each system in the medical sector and the medical functions of the medical sector.The causal relationship between the medical sector and the medical building can be obtained according to the functional status of the medical systems corresponding to the medical function status of the medical sector in the medical building.

[0044] According to the earthquake damage information of all components included in the medical department and the causal relationship between the medical department's medical functions and the causal relationship between the medical department and the medical functions of the medical building, a mapping relationship can be established between the damage probability of each component and the post-earthquake failure probability of the medical department, thereby establishing a mapping relationship between the damage probability of components and the post-earthquake failure probability of the medical building; that is, when the damage probability of each component changes, the post-earthquake failure probability of the medical department also changes, and as a result, the post-earthquake failure probability of the medical building also changes.

[0045] In one specific embodiment, a fault tree analysis may be performed on the damage information of the components of each medical department, the medical functions, and the floor distribution of the department, to establish a fault tree model corresponding to each medical department, a fault tree model for the floors corresponding to each medical department, and a fault tree model corresponding to the medical building, where the input event of the fault tree model is the earthquake damage probability of each component of the medical department, and the output event of the fault tree model is the post-earthquake failure probability of the medical building.

[0046] As shown in Figure 2, a fault tree model is used to correlate the damage to structural and nonstructural components and medical equipment within the medical department with the loss of overall functionality of the medical building. Figure 2a shows the structure of a fault tree model for the loss of functionality of a typical operating room after an earthquake, primarily including the drug supply system, transport system, and specialized equipment within the operating room. As shown in Figure 2a, the drug supply system includes equipment such as medicine cabinets and medicine cabinets, the transport system includes equipment such as simple emergency carts and multi-function emergency carts, and the specialized equipment system includes equipment such as multi-function defibrillators, anesthesia machines, monitors, ventilators, and surgical shadowless lights. E1 through E10 in Figure 2a represent the damage probability of each component in a given earthquake scenario. Figure 2b shows the breakdown of medical departments by function in the outpatient building. The clinical departments include the internal medicine and surgical departments; the testing departments include the CT room, chemistry lab, and EEG room; the admission departments include general wards, operating rooms, and ICU rooms; and the supply departments include the surgical supply department, equipment storage room, and pharmacy. The causal relationships between the medical departments and the medical system divided by medical function shown in Figure 2b can be established in real time, thereby establishing a fault tree model for the overall medical functions of the medical building. Figure 2c shows the distribution of CT rooms by floor in the outpatient building. A floor node is introduced into the CT room fault tree, with one CT room on the third floor and two on the sixth floor. A fault tree model for the medical department floors can be established using floor-to-number fault tree logic, forming a functional connection relationship between components, departments, and floors. Figure 2d shows the fault tree model of the entire medical building, where the classification according to function includes basic functions, examination functions, medical treatment functions, admission functions, and supply functions. Basic functions are the basic systems for operating a medical building, including the transportation system, enclosure system, heating, ventilation, and air conditioning system, power supply system, and water supply system.

[0047] The earthquake damage information events of various components constitute the basic events in the fault tree, and the occurrence probability of the basic events (i.e., earthquake damage probability) can be used to calculate the post-earthquake failure probability of the corresponding medical building, which is the occurrence probability of the top-level event, through the logic of the fault tree.

[0048] In one example, a specific embodiment is provided in which an elastic-plastic analysis model of a medical building is obtained, an elastic-plastic time history response analysis is performed on the elastic-plastic analysis model, engineering requirement parameters are calculated, and the damage probability of each component in a specified earthquake scene is determined based on the vulnerability information and engineering requirement parameters of each component. The building information model of the medical building is converted into an elastic-plastic analysis model, and an elastic-plastic time history response analysis is performed on the elastic-plastic analysis model to calculate the engineering requirement parameters of the medical building structure, where the engineering requirement parameters include the inter-floor displacement angle and floor acceleration, and the damage probability of each component in a specified earthquake scene is determined based on the vulnerability information of each component, the engineering requirement parameters and the earthquake vulnerability model.

[0049] FIG. 3a shows a model of a medical building according to an embodiment of the present invention, and FIG. 3b shows an elastic-plastic model of a medical building according to an embodiment of the present invention.

[0050] Using elastic-plastic analysis software, elastic-plastic time history response analysis is performed on the established elastic-plastic analysis model to obtain the structure's inter-story displacement angle and floor acceleration. Normal distribution fitting calculations are performed on the vulnerability information and engineering requirement parameters of each component to determine the damage probability of each component in a given earthquake scenario.

[0051] Seismic fragility models usually define the probability that a specific component or structure will reach or exceed a specific damage state based on given engineering requirement parameters (such as floor-to-floor displacement angle, floor acceleration, etc.). A log-normal distribution can be used to fit the seismic fragility model, and the main parameter is the median x m and logarithmic standard deviation β. The calculation formula is as follows: JPEG2025119570000002.jpg14170In the formula, φ(·) is the cumulative distribution function of the standard normal distribution, x m is the median value of floor peak acceleration, β is the logarithmic standard deviation of floor peak acceleration, and EDP is the engineering requirement parameter.

[0052] Take the elevator in a medical building as an example. The elevator is an acceleration-sensitive component, and its damage state is controlled by acceleration. When the elevator reaches the damage state, the median value is 0.5g, and the standard deviation is 0.3g. The EDP is the floor acceleration previously calculated by the elastic-plastic time history response analysis of the structure. When it is necessary to calculate the damage probability of the elevator on a specific floor, the floor peak acceleration calculated on that floor can be substituted into the above formula to obtain the elevator damage probability under the current earthquake conditions.

[0053] In one embodiment, a specific embodiment is provided for determining the post-earthquake failure probability of each medical building in a given earthquake scene based on the damage probability and mapping relationship of each component in the given earthquake scene. In the earthquake scenario, the damage probability of each component included in the medical department in a given earthquake scenario is input into the fault tree, and the output result of the fault tree is the shutdown probability of the medical building in a given earthquake scenario.

[0054] The damage probability of each component in a given earthquake scenario is calculated as an input event of the fault tree model, and the occurrence probability of the top-level event is calculated using the fault tree logic. The failure probability of the medical building's post-earthquake medical function output by the fault tree model can be obtained, and this failure probability is the shutdown probability of the medical building in a given earthquake scenario.

[0055] In one embodiment, a specific embodiment is provided in which the damage probability of components included in the medical department, the corresponding post-earthquake failure probability and the failure probability of each medical system are mapped into a fault tree model of the medical building, and the vulnerable path of the medical functions of the medical building in a given earthquake scene is determined based on the failure probability and failure probability of each path. The damage probability of components included in the medical department is associated with the fault tree of the medical building, the outage probability of the medical department calculated according to the damage probability of the components and its distribution on each floor of the medical building are compiled, the outage probability of the medical department under a given earthquake action is calculated, the outage probabilities are continuously compiled, and the outage probability of each medical system is calculated, thereby obtaining the outage probability of the medical building in a given earthquake scene, and all the probabilities are expressed in a fault tree, and by comparison, the vulnerable path of the medical system of the medical building in an earthquake scene is obtained.

[0056] Referring to the schematic diagram of vulnerable paths in medical buildings shown in Figure 4, Figure 4 shows the vulnerable paths of medical buildings after a certain earthquake scenario, the outage probability of medical departments related to the vulnerable paths, and the damage probability of medical equipment in the medical departments. As can be seen from Figure 4, in a certain earthquake scenario, the outage probability of the outpatient building is 32.54%, the outage probability of the corresponding basic functions is 11.74%, the outage probability of the examination function is 0.19%, the outage probability of the medical treatment function and the supply function is almost 0, and the outage probability of the admission function is 23.42%. Therefore, the vulnerable path is developed from the admission function, and in the admission function, the outage probability of the general ward and operating room is almost 0. The probability of the ICU room stopping was 23.42%, so the second stage of the vulnerable path was deployed from the ICU room, and the damage probability of each component in the ICU room was obtained. The probability of the medical supply cabinet overturning was 7.24%, the probability of the medicine cabinet c overturning was 0.88%, the probability of the simple emergency cart sliding more than 1.0 m was 5.34%, the probability of the multi-functional emergency cart sliding more than 1.0 m was 0.18%, the probability of the general hospital bed sliding more than 1.0 m was 0.07%, the probability of the cardiac defibrillator failing was 5.88%, the probability of the monitor failing was 5.88%, the probability of the ventilator failing was 0.03%, and the probability of the electroencephalograph failing was 5.88%. This allows the vulnerable path to be reflected as the outage of small medical equipment such as cardiac defibrillators - equipment - (ICU room 2-1) - second floor - ICU room - inpatient function - outpatient building, allowing users to more intuitively observe the vulnerable path of the medical functions of medical buildings in earthquake scenes, improving the user experience.

[0057] In one embodiment, according to the obtained fault tree vulnerability path, the specific embodiment accurately proposes four strategies to improve the seismic resistance of medical buildings: These include improving the seismic resistance of critical equipment on vulnerable routes, adjusting the location of critical departments on vulnerable routes, increasing the number of critical departments, and adopting seismic isolation reinforcement. Regarding the seismic resistance of critical equipment, for branches with a significant post-earthquake impact on the ICU rooms, measures such as adjusting the equipment connection method and quality can be taken to improve the seismic resistance of the equipment. Figure 5a shows the schematic diagram of the change in the post-earthquake failure probability of the ICU rooms and outpatient ward after improving the seismic resistance of critical medical equipment on the vulnerable route of the medical functions of a medical building. After improving the seismic resistance of critical equipment, the failure probability of the ICU rooms and outpatient ward significantly decreased. Regarding the floor layout adjustment of departments on vulnerable routes, in the case of the medical building mentioned above, the ICU rooms on the second floor are on a vulnerable route. Adjusting the floor location of these ICU rooms can improve the post-earthquake functionality of the medical building. Figure 5b shows the schematic diagram of the comparison of the failure probability of ICU rooms by floor. When ICU rooms are distributed on different floors, their failure probability varies, and floors with lower failure probability can be selected for installation. Increasing the number of departments along the vulnerable path reduces the probability of failure for the medical building, especially for ICU rooms with only one on the second floor. Figure 5c shows the schematic diagram of the change in the failure probability of ICU rooms after increasing the number of ICU rooms along the vulnerable path. The number of ICU rooms varies, as does the probability of failure for the medical building. Finally, installing seismic isolation bearings ensures that the medical building's post-earthquake function is not interrupted. Figure 5d shows the difference in the failure probability between the seismic and seismic isolation structures of the medical building during an earthquake.

[0058] The above-mentioned post-earthquake medical function evaluation method for medical buildings in this embodiment establishes a mapping relationship between BIM (Building Information Modeling) and medical function evaluation logic relationships, realizes an intuitive display of the evaluation results, and provides a relevant path for improving the toughness of medical buildings according to the results. It makes full use of the established medical building information model to extract the information necessary for functional evaluation of the medical department, and realizes the overall research of the medical building through fragility analysis and fault tree model, thereby realizing the post-earthquake functional evaluation of the medical building, providing an important means for evaluating the post-earthquake use function of medical buildings, which is of great significance for discovering seismic weaknesses in the medical department and improving the seismic toughness of medical buildings.

[0059] Based on the above embodiment, this embodiment provides an example of evaluating and displaying the post-earthquake medical function of a medical building using the above-mentioned method for evaluating the post-earthquake medical function of a medical building, and can be specifically implemented by referring to the following steps, as shown in the flowchart for evaluating and displaying the post-earthquake medical function of a medical building in Figure 6.

[0060] S61: All components in the BIM of the medical building are used to obtain the engineering requirement parameters and fragility curves of various components.

[0061] S62: Realize logic association mapping from components to department function evaluation fault tree.

[0062] The probability of functional loss of a department is defined as the functional loss of a medical building, and a fault tree model is adopted to relate the damage status of structural members, non-structural members and medical equipment within each medical department to the overall medical function loss of the department, thereby establishing a fault tree model of the functional loss of a medical department after encountering an earthquake.

[0063] S63: Realize logic relationship mapping of department functions and medical building function evaluation fault tree.

[0064] The function failure probability of a medical building is defined as the outage probability of a medical building, and the fault tree model is adopted to divide each medical department into different medical systems according to the medical function status, and the outage probability of the medical department of a medical building is related to the outage probability of the medical building by introducing floor nodes, and the outage probability fault tree model of a medical building in an earthquake scene is established.

[0065] S64: Use fault tree models to complete a post-earthquake functional assessment of a medical building.

[0066] The fragility analysis can determine the failure probability of various components, and the fault tree model can be used to relate the component damage probability to the functional loss of the department, thereby relating it to the outage situation of the medical building, and realizing the evaluation of post-earthquake medical functions for the medical building.

[0067] S65: The post-earthquake assessment results of medical buildings and each medical department are mapped onto a fault tree model, fragile paths are formed, and suggestions are made to improve the seismic resistance of medical buildings.

[0068] Through the evaluation of the medical building after the earthquake, the outage probability of the medical building, the outage probability of various medical departments, and the destruction probability of various components can be obtained, which are then mapped into the fault tree model of the medical building to form a vulnerable path for the medical functions of the medical building under the action of an earthquake. By obtaining the vulnerable path, four strategies are proposed to improve the seismic resistance of the medical building, specifically, improving the seismic resistance of important equipment on the vulnerable path, adjusting the layout of important departments on the vulnerable path, increasing the number of important departments, and adopting seismic isolation reinforcement.

[0069] The embodiment of the present invention provides a system for evaluating the post-earthquake performance of a medical building that takes into account the multi-level connections of components, departments, and floors. Figure 7 shows a schematic diagram of the configuration of the system for evaluating the post-earthquake performance of a medical building that takes into account the multi-level connections of components, departments, and floors according to the embodiment of the present invention. an acquisition module 71 used for acquiring a fault tree model of a department, wherein the fault tree model of the department is established according to the mapping relationship between the seismic damage status of components included in each medical department in the medical building and the overall medical function of the medical department; an establishment module 72, which is used to obtain the distribution and number of each medical department on the floor in the medical building, and establish a multi-level connection relationship of components-departments-floors of the entire medical building based on the fault tree model of the department, and form a fault tree model of the medical building; a first determination module 73 that obtains an elastic-plastic analysis model of the medical building, performs an elastic-plastic time history response analysis on the elastic-plastic analysis model, calculates engineering requirement parameters, and determines the damage probability of each of the components in a predetermined earthquake scenario based on the vulnerability information of each of the components and the engineering requirement parameters; a second determination module 74, which is used to determine the post-earthquake failure probability of the medical building in the predetermined earthquake scenario according to the damage probability of each of the components in the predetermined earthquake scenario and the multi-level connection relationship between components, departments, and floors of the medical building; and a third determination module 75, which is used to identify vulnerable paths of the medical functions of the medical building in the specified earthquake scenarios based on the post-earthquake functional failure probability in each of the specified earthquake scenarios and each of the multi-level connection relationships, and determine an earthquake resistance improvement strategy for the medical building based on the vulnerable paths.

[0070] The post-earthquake medical function evaluation system for a medical building according to this embodiment has the following advantages. By establishing a mapping relationship between the components contained in each medical department and the medical functions of the department, a mapping relationship between components and departments is established. By introducing floor nodes, a mapping relationship between departments and floors is established, realizing a multi-level functional connection relationship between components, departments, and floors. Assess the probability of post-earthquake functional failure of the entire medical building in different earthquake scenarios according to the damage probability of components in each medical department in different earthquake scenarios by correlating the earthquake damage status of structural members, non-structural members, and medical equipment in each medical department of the medical building with the loss of the overall medical function of the medical building; Based on the post-earthquake failure probability of the entire medical building and the failure probability of each branch on each floor in different earthquake scenarios, the vulnerable paths of the medical system functions of the medical building in different earthquake scenarios can be obtained, and the seismic resistance can be appropriately improved according to the identified weak points. The above-mentioned component-department-floor multi-hierarchical connection relationship is a causal relationship between all components included in the medical department and the medical functions of the medical department, obtained in accordance with the relationship between all components included in the medical department and each system in the medical department, and the relationship between each system in the medical department and the medical functions of the medical department, and is also a causal relationship between the medical department and the medical building, obtained in accordance with the situation in which the medical functions of the medical department are associated with medical system functions in the medical building.

[0071] The post-earthquake medical function evaluation system for medical buildings in this embodiment can accurately identify the impact of components based on vulnerable paths, improve the efficiency of evaluating the post-earthquake medical functions of medical buildings, and provide important data support for discovering seismic weak points in medical buildings and improving the seismic toughness of medical buildings.

[0072] Regarding the system according to this embodiment, its realization principle and the technical effects produced are the same as those of the above embodiments, and for the sake of simplicity, for the parts not described in the apparatus embodiments, reference can be made to the corresponding contents of the above method embodiments.

[0073] An embodiment of the present invention provides an electronic device, the electronic device including a processor and a memory, the memory storing a computer program executable on the processor, the processor executing the computer program to realize the steps of the method according to the embodiment.

[0074] An embodiment of the present invention provides a computer-readable medium, on which computer-executable instructions are stored, and when the computer-executable instructions are called and executed by a processor, the computer can execute the instructions to implement the method described in the above embodiment.

[0075] As can be understood by those skilled in the art, all or part of the processes of the methods according to the above embodiments can be completed by issuing instructions to a control device by a computer program, which may be stored in a computer-readable storage medium, and when the program is executed, it may include the processes of each of the above method embodiments, and the storage medium may be a memory, a magnetic disk, an optical disk, etc.

[0076] As used herein, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another and do not necessarily require or imply any actual relationship or order between those entities or operations. Furthermore, the terms "comprise," "comprises," or any other variation thereof are intended to cover a non-exclusive inclusion, whereby a process, method, article, or device comprising a set of elements includes not only those elements but also other elements not expressly listed or elements inherent in the process, method, article, or device. Absent further limitations, an element qualified by the phrase "comprises ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes said element.

[0077] In this specification, each embodiment is described step by step, and each embodiment is described focusing on the differences from other embodiments, and the same or similar parts between each embodiment can be referenced.

[0078] The above description of the disclosed embodiments will enable those skilled in the art to make or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for evaluating the post-earthquake function of a medical building taking into account the connection of components, departments, and floors, comprising: Obtaining a department fault tree model, wherein the department fault tree model is established according to a mapping relationship between components included in each medical department in a medical building and the overall medical functions of the medical department; Obtaining the distribution and number of each medical department on the floor in the medical building, and establishing a multi-level component-department-floor connection relationship for the entire medical building based on the fault tree model of the department, thereby forming a fault tree model for the medical building; obtaining an elastic-plastic analysis model of the medical building, performing an elastic-plastic time history response analysis on the elastic-plastic analysis model, calculating engineering requirement parameters, and determining the damage probability of each of the components in a predetermined earthquake scenario based on the vulnerability information of each of the components and the engineering requirement parameters; determining a post-earthquake failure probability of the medical building in a predetermined earthquake scenario based on the damage probability of each of the components in the predetermined earthquake scenario and the multi-level component-department-floor connection relationship of the medical building; A method for evaluating the post-earthquake functionality of a medical building taking into account the connection between components, departments, and floors, comprising the steps of identifying vulnerable paths of the medical functions of the medical building in the specified earthquake scenario based on the post-earthquake functional failure probability in each of the specified earthquake scenarios and each of the multi-level connection relationships, and determining a strategy for improving the seismic resistance of the medical building based on the vulnerable paths.

2. The step of establishing a multi-level component-department-floor connection relationship for the entire medical building based on the fault tree model of the department includes: determining components to be included in each medical department based on floor attributes and department attributes of each of the components, the components including structural components, non-structural components, and medical equipment of the medical building; The method for post-earthquake functional evaluation of a medical building taking into account the connection of components, departments, and floors, as described in claim 1, further comprising the steps of establishing a medical function logic of a component-department hierarchy using a department fault tree model based on the components contained in each medical department and the distribution and number of each medical department in the medical building, and further introducing floor nodes to establish a multi-hierarchical connection relationship of components, departments, and floors for the entire medical building.

3. The step of establishing a multi-level component-department-floor connection relationship for the entire medical building includes: The method for evaluating the post-earthquake functionality of a medical building taking into account the connections between components, departments, and floors, as described in claim 1, further comprising the step of determining a mapping relationship between the medical departments and floors of the medical building based on the distribution number of each medical department on the floor, and establishing a multi-hierarchical connection relationship between components, departments, and floors by introducing floor nodes into a fault tree.

4. The step of obtaining an elastic-plastic analysis model of the medical building, performing an elastic-plastic time history response analysis on the elastic-plastic analysis model, and calculating engineering requirement parameters includes: The method for post-earthquake functional evaluation of a medical building taking into account the connection of components, departments, and floors, as described in claim 1, further comprising the steps of converting the building information model of the medical building into a corresponding elastic-plastic analysis model, performing an elastic-plastic time history response analysis on the elastic-plastic analysis model, and calculating the engineering requirement parameters of the structure of the medical building, wherein the engineering requirement parameters include the floor-to-floor displacement angle and floor acceleration.

5. The method for post-earthquake performance evaluation of a medical building taking into account component-department-floor coupling, as described in claim 4, further comprising the step of establishing a building information model of the medical building based on a predetermined multi-scale modeling algorithm.

6. The step of identifying a vulnerable path of medical functions of the medical building in the predetermined earthquake scenario based on the post-earthquake failure probability in each predetermined earthquake scenario and each of the multi-level connection relationships, The method for evaluating the post-earthquake functionality of a medical building taking into account the coupling of components, departments, and floors, as described in claim 1, further comprising the steps of mapping the damage probability of components included in the medical department and the corresponding post-earthquake functional failure probability onto the fault tree of the medical building, and obtaining vulnerable paths for the post-earthquake medical functions of the medical building based on the fault tree of the entire medical building.

7. The method for post-earthquake functional evaluation of a medical building taking into account the connection of components, departments, and floors, as described in claim 1, characterized in that the improvement strategies include improving the seismic resistance of important equipment on vulnerable routes, adjusting the layout of important departments on vulnerable routes, increasing the number of important departments, and adopting seismic isolation reinforcement.

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