Post-earthquake functional evaluation method for medical buildings considering component-department-floor connections

Abstract

This paper provides a method for evaluating the post-earthquake functionality of medical buildings that takes into account the connections between components, departments, and floors. [Solution] The method establishes a mapping relationship between departments and floors of the medical building, realizes a multi-level functional coupling relationship of components-departments-floors, and associates the earthquake damage status of components with the loss of the overall medical function of the medical building, thereby obtaining the post-earthquake functional failure probability of the entire medical building according to the damage probability of components of each medical department in different earthquake scenes, and further obtains the vulnerable paths of the medical system functions of the medical building, and determines an earthquake resistance improvement strategy for the medical building.

Description

[Technical field]

[0001] The present invention relates to the technical field of buildings, and in particular to a method for post-earthquake functional assessment of medical buildings taking into account component-department-floor coupling. [Background technology]

[0002] Medical buildings are considered one of the very important strategic facilities in disaster events, and play an important role in disaster and emergency relief, especially earthquake emergency relief. Data statistics show that 97% of earthquake casualties occur within 30 minutes after the main earthquake. Therefore, the emergency response of the local medical system plays a very important role in earthquake emergency relief and emergency medical care. However, in past earthquakes, the damage to medical facilities has reduced the recovery ability of the hospital's medical functions, and traditional post-earthquake medical function evaluation technology for medical buildings faces the problem that it is difficult to consider the impact of each floor and department on medical functions, and the identification and display of vulnerable paths that affect post-earthquake medical functions are lacking. Summary of the Invention [Means for solving the problem]

[0003] In order 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 the 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 a medical building, and establishing a multi-hierarchical connection relationship of components-departments-floors of the entire medical building based on the fault tree model of the department, to form 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 calculating the fragility of each of the components. The present invention provides a method for evaluating the post-earthquake functionality of a medical building that takes into account the coupling of components, departments, and floors, comprising the steps of: determining a damage probability of each of the components in a specified earthquake scene based on the performance information and the engineering requirement parameters; determining a post-earthquake functionality failure probability of the medical building in the specified earthquake scene based on the damage probability of each of the components in the specified earthquake scene and the multi-hierarchical coupling relationships of the components, departments, and floors of the medical building; and identifying vulnerable paths of the medical functions of the medical building in the specified earthquake scene based on the post-earthquake functionality failure probability in each of the specified earthquake scenes and each of the multi-hierarchical coupling relationships, and determining a strategy for improving the earthquake 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 a 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, where 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 a fault tree model of the department based on the components included in each of the medical departments and the distribution and number of each of the medical departments 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 coupling 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 a floor, and establishing a multi-hierarchical component-department-floor coupling 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 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 angle and floor acceleration.

[0007] Optionally, the method further comprises establishing a building information model of the medical building based on a predefined multi-scale modelling 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-hierarchical connection relationships includes a step of 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 reinforcement.

[0010] An embodiment of the present invention includes an acquisition module used for acquiring 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 for acquiring the distribution and number of each medical department on a floor in the medical building, and establishing a multi-hierarchical component-department-floor coupling relationship of the entire medical building based on the fault tree model of the department, and forming a fault tree model of the medical building; and an establishment module used for acquiring 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 obtaining fragility information of each of the components and the engineering function of the medical building. The present invention provides a post-earthquake function evaluation system for a medical building that takes into account the coupling of components, departments, and floors, the system including: a first determination module that determines the damage probability of each of the components in a specified 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 a specified earthquake scene based on the damage probability of each of the components in the specified earthquake scene and the multi-hierarchical coupling relationship of components, departments, and floors of the medical building; and a third determination module that is used to identify vulnerable paths of the medical functions of the medical building in the specified earthquake scene based on the post-earthquake function failure probability in each of the specified earthquake scenes and each of the coupling 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, the storage device storing a computer program, the electronic device performing the above-described method when the computer program is executed by the processor. Effect of the Invention

[0012] The method and system for evaluating the post-earthquake medical function of a medical building 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 a medical building, realizes mapping between components, departments, and floors, and provides important data support for discovering seismic weak points of medical buildings and improving the seismic toughness of medical buildings. [Brief description 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 in the description of 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 creative labor. [Figure 1] FIG. 1 is a flow chart of a post-earthquake medical function evaluation method for a medical building according to an embodiment of the present invention. [Figure 2a] FIG. 2a is a fault tree model under a 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 according to medical functions in an embodiment of the present invention. [Figure 2c] FIG. 2c is a fault tree model for classifying medical departments by floors 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 is a schematic diagram showing the change in the probability of post-earthquake functional failure of ICU rooms and outpatient buildings 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 outage 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 outage 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 scene according to an embodiment of the present invention. [Figure 6] FIG. 6 is a flowchart of post-earthquake functional evaluation and display for a medical building according to an embodiment of the present invention. [Figure 7] FIG. 7 is a schematic diagram of 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 PREFERRED EMBODIMENTS

[0014] In order to make the above 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 herein are only used to interpret the present invention and do not limit the present invention.

[0015] At present, in past earthquakes, damage to medical facilities (including structural members, non-structural members and medical equipment of medical buildings) has reduced the hospital's ability to recover functions, so it is necessary to evaluate traditional medical buildings from earthquake damage and function loss, determine their seismic toughness level, clarify their seismic weak points, and provide data support and decision-making support for the implementation of toughness improvement plans. Traditional methods mainly adopt indicator-based evaluation methods and function-based evaluation methods to develop post-earthquake hospital evaluations, and the types of evaluation targets are mainly 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. The conventional method establishes the functional logic of a typical department and realizes the evaluation system of a typical department or functional system of a medical building. However, the earthquake response of different floors is different, and the functional damage situation of the typical department of the corresponding floor is also different. Because the conventional method has difficulty in considering the impact on the overall functional evaluation of the same type of department on different floors, the conventional method mainly develops the analysis for a single department.

[0017] (2) There is a lack of identification and performance improvement of vulnerable pathways that affect post-earthquake medical functions. The functional vulnerability path is an important path formed by the most vulnerable components, departments, and medical functions of a medical building after an earthquake, and is of great significance in identifying the weak points of the post-earthquake functions of a medical building. After identifying the functional vulnerability path, the seismic resistance of a medical building can be improved by increasing the number of backups of vulnerable components or strengthening their seismic resistance. However, most previous studies have pointed out that the most important equipment that affects the post-earthquake functions of a medical building remains at the component level, and the identification and display of weak points such as higher levels such as floors and departments is lacking.

[0018] In order to improve the above problems, an embodiment of the present invention provides a method, device and electronic device for evaluating post-earthquake medical function of a medical building, taking into account multi-level connections of 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 shown in Figure 1, the method mainly includes the following steps:

[0020] S102: obtain a fault tree model of a department, which is established according to the mapping relationship between the earthquake damage status of components contained 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 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 the floor in the medical building, and establish a multi-hierarchical 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.

[0023] Specifically, firstly, 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; then, based on the components included in each medical department and the distribution and number of each medical department in the medical building, a medical function logic of component-department hierarchy is established by the department fault tree model, and a floor node is further introduced to establish a multi-hierarchical coupling relationship of components-department-floor of the entire medical building; optionally, a mapping relationship between the medical department and the floor of the medical building is determined based on the distribution number of each medical department on the floor, and a multi-hierarchical coupling relationship of components-department-floor is established by introducing a floor node into the fault tree.

[0024] In this embodiment, the functional logic relationship of components-departments established in the fault tree model of the medical department is expanded, and floor nodes are introduced to consider the distribution influence of the departments of the medical building on the floors, and a multi-level functional coupling relationship of components-departments-floors is established to form a fault tree model of the medical building. The coupling relationship can relate the loss of the medical function of the department to the loss of the overall medical function of the medical building, thereby realizing the functional evaluation of the medical building after the 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 scene 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, where the engineering requirement parameters include inter-floor displacement angle and floor acceleration.

[0027] Elastic-plastic analysis calculations can be performed on the elastic-plastic analysis model of the medical building to obtain engineering damage parameters (EDPs) such as floor-to-floor displacement angles and floor accelerations. Based on the 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 given earthquake scene based on the damage probability of each component in a given earthquake scene and the multi-level connection relationship of components-departments-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 function 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 post-earthquake functional shutdown probability of the medical department, thereby establishing a mapping relationship between each medical department and the shutdown probability of the medical building.

[0031] The input event of the medical building fault tree model 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 in each given earthquake scene and each multi-level connection relationship, identify the vulnerable paths of the medical functions of the medical building in the given earthquake scene, 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 failure probability are mapped onto a fault tree of the medical building, and a vulnerable path of the post-earthquake medical function of the medical building is obtained based on the fault tree of the entire medical building, and a seismic improvement strategy of the medical building is determined based on the vulnerable path.

[0034] The above-mentioned established multi-level functional connection relationship of components-departments-floors is expressed in the form of a fault tree, and according to the failure probability of each component in the obtained predetermined earthquake scene, the failure probability of the department and the failure probability of the medical building can be obtained for each level, and the post-earthquake failure probability of each path is summarized to determine the vulnerable path in the medical function system, which may be obtained in real time.

[0035] Furthermore, according to the vulnerable path, a strategy for improving the earthquake resistance of the medical building can be determined, 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 above-mentioned post-earthquake medical function evaluation method of a medical building according to an embodiment of the present invention establishes a mapping relationship between the components included in each medical department and the department medical function, thereby establishing a mapping relationship between the department and the floor of the medical building, realizing a multi-level functional connection relationship between components-department-floor, and can correlate the earthquake damage status of the structural components, non-structural components and medical equipment in each medical department of the medical building with the loss of the overall medical function of the medical building, thereby evaluating the post-earthquake function failure probability of the entire medical building in different earthquake scenes according to the damage probability of the components of each medical department in different earthquake scenes, and further obtaining the vulnerable paths of the medical system functions of the medical building in different earthquake scenes. Furthermore, the seismic resistance of the medical building is accurately improved according to the obtained vulnerable paths. This evaluation method reduces the calculation complexity of the post-earthquake medical function evaluation, improves the evaluation efficiency of the post-earthquake medical function of the medical building, realizes the mapping between components-department-floor, and provides important data support for discovering the seismic weak points of the medical building and improving the seismic toughness of the medical building.

[0037] In one embodiment, for a medical building, a mapping relationship between the earthquake damage information of components included in the 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-hierarchical combination relationship of components-departments-floors 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 attributes and department attributes of each component.

[0039] The above components include structural components, non-structural components and medical equipment of the medical building, and all the 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 contained in each medical department and the medical functions of the medical department, establish a mapping relationship between the earthquake damage information of the components contained 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-hierarchical coupling relationship of components-departments-floors is formed.

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

[0043] According to the relationship between the damage status of all components included in the medical sector and each system in the medical sector (e.g., 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 function of the medical sector, it is possible to obtain the causal relationship between the damage status of all components included in the medical sector and the medical function of the medical sector. According to the functional status of the medical system corresponding to the medical function status of the medical sector in the medical building, it is possible to obtain the causal relationship between the medical sector and the medical building.

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

[0045] In a specific embodiment, a fault tree analysis may be performed on the damage information of components of each medical department, medical functions, and floor distribution of the department, to establish a fault tree model corresponding to each medical department, a fault tree model of the floor 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, the fault tree model is adopted to relate the damage status of structural members, non-structural members and medical equipment in the medical department to the overall loss of function of the medical building, as shown in Figure 2. Figure 2a shows the structure of a typical fault tree model of the loss of function of an operating room after encountering an earthquake, mainly including the drug supply system, the transport system and the specialized equipment in 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 to E10 in Figure 2a are the damage probability of each component in a given earthquake scene. Figure 2b shows the classification of departments by medical functions in the outpatient building, where the medical functions include internal medicine and surgery, the examination functions include CT rooms, chemical laboratories, and EEG laboratories, the admission functions include general wards, operating rooms, and ICU rooms, and the supply functions include the surgical supply department, equipment storage room, and pharmacy. The causal relationships between the medical departments and the medical systems divided according to medical functions shown in Figure 2b can be established in real time, thereby establishing a fault tree model of the overall medical functions of the medical building. Figure 2c shows the distribution of CT rooms by floor in the outpatient building, that is, a floor node is introduced into the fault tree of the CT rooms, and the number of CT rooms on the third floor is 1, and the number of CT rooms on the sixth floor is 2. The fault tree logic of the floor and the number can be used to establish the fault tree model of the medical department floor, and the functional connection relationship between the components, departments, and floors can be formed. Figure 2d shows the fault tree model of the entire medical building, where the classification according to function includes basic function, examination function, medical treatment function, admission function, and supply function. The basic function is the basic system for operating the medical building, and includes 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-floor 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 fragility information of each component and the engineering requirement parameters. 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 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] The elastic-plastic analysis software is adopted to perform an elastic-plastic time history response analysis on the established elastic-plastic analysis model to obtain the structure's inter-storey displacement angle and floor acceleration. A normal distribution fitting calculation is performed on the fragility information and engineering requirement parameters of each component to determine the damage probability of each component in a given earthquake scene.

[0051] The seismic fragility model usually defines the probability that a particular member or structure will reach or exceed a particular damage state based on the given engineering requirement parameters (such as floor-to-floor displacement angle, floor acceleration, etc.), and the log-normal distribution can be adopted to fit the seismic fragility model, and the main parameters are the median x m and logarithmic standard deviation β. The calculation formula is as follows: JPEG0007672029000002.jpg14170In the formula, φ(·) is the cumulative distribution function of the standard normal distribution, x m is the median 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 of a medical building as an example. The elevator is an acceleration-sensitive component, and the damage state is controlled by the acceleration. When the elevator reaches the damage state, the median is 0.5g and the standard deviation is 0.3g. The EDP is the floor acceleration calculated by the elastic-plastic time history response analysis of the structure before this. When it is necessary to calculate the damage probability of the elevator on a certain floor, the floor peak acceleration calculated on the floor can be substituted into the above formula to obtain the damage probability of the elevator under the current earthquake conditions.

[0053] In one embodiment, in an earthquake scene, a specific embodiment is provided for determining the post-earthquake failure probability of each medical building in a specified earthquake scene based on the damage probability and mapping relationship of each component in the specified 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 specified earthquake scene is calculated as an input event of the fault tree model, and the occurrence probability of the top-level event is calculated using fault tree logic. The failure probability of the post-earthquake medical function of the medical building output by the fault tree model can be obtained, and the failure probability is the shutdown probability of the medical building in a specified earthquake scene.

[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 functional failure probability and the failure probability of each medical system are mapped to a fault tree model of the medical building, and the vulnerable path of the medical function 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 specified 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 specified earthquake scene, and all the probabilities are represented in a fault tree, thereby obtaining the vulnerable paths of the medical systems of the medical building in the earthquake scene by comparison.

[0056] Referring to the schematic diagram of the vulnerable paths of medical buildings shown in Figure 4, Figure 4 shows the vulnerable paths of medical buildings after a certain earthquake scene and the outage probability of medical departments related to the vulnerable paths and the damage probability of medical equipment in the medical department. As can be seen from Figure 4, in a certain earthquake scene, the outage probability of the outpatient building is 32.54%, the outage probability of the corresponding basic function 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 hospitalization function is 23.42%, so the vulnerable path is developed from the hospitalization function, and in the hospitalization function, the outage probability of the general ward room and the 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 to obtain the damage probability of each component in the ICU room. 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 1.0m was 5.34%, the probability of the multi-function emergency cart sliding more than 1.0m was 0.18%, the probability of the general bed sliding more than 1.0m 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%. In this way, the vulnerable path is reflected in the outage of small medical equipment such as cardiac defibrillators-equipment-(ICU room 2-1)-2nd 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, and improving the user experience.

[0057] In one embodiment, according to the obtained fault tree fragile path in this embodiment, four strategies for improving the seismic resistance of medical buildings are precisely proposed. These include 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. In improving the seismic resistance of important equipment, for the branch with a large post-earthquake impact on the ICU room, the seismic resistance of the equipment can be improved by measures such as adjusting the connection method of the equipment and the quality of the equipment. As shown in the schematic diagram of the change in the post-earthquake function failure probability of the ICU room and the outpatient building after improving the seismic resistance of important medical equipment on the vulnerable path of the medical function of the medical building shown in Figure 5a, after improving the seismic resistance of the important equipment, the failure probability of the ICU room and the outpatient building has changed significantly. In adjusting the floor layout of departments on the vulnerable path, for the above medical building, the ICU room on the second floor is a department on the vulnerable path, and the post-earthquake function of the medical building can be improved by adjusting the floor distribution of the ICU room. As shown in the schematic diagram of the comparison of the function failure probability of the ICU room by floor shown in Figure 5b, when the ICU room is distributed on different floors, its failure probability is different, and the floor with the small failure probability can be selected for installation. In the case of an increase in the number of departments on the vulnerable path, for the ICU room with only one room on the second floor, the probability of failure of the medical building can be reduced by increasing the number of rooms, as shown in the schematic diagram of the change in the probability of failure of the ICU rooms after increasing the number of ICU rooms on the vulnerable path shown in Figure 5c. The number of ICU rooms arranged is different, and the probability of failure of the medical building is also different. Finally, by installing and reinforcing seismic isolation bearings, the post-earthquake function of the medical building is ensured to be uninterrupted, as shown in the schematic diagram of the comparison of the probability of failure of the seismic structure and the seismic isolation structure of the medical building in the earthquake scene shown in Figure 5d. This shows the difference in the probability of failure of the seismic structure and the seismic isolation structure of the medical building.

[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 relationship, realizes an intuitive display of the evaluation result, and provides a relevant path for improving the toughness of medical buildings according to the result. It makes full use of the established medical building information model, extracts the information required for the function evaluation of the medical department, and realizes the overall study of the medical building through fragility analysis and fault tree model, thereby realizing the evaluation of the post-earthquake function of the medical building, providing an important means for evaluating the post-earthquake use function of the medical building, which is of great significance to the discovery of seismic weak points in the medical department and the improvement of 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 executed by referring to the following steps, as shown in the flowchart for evaluating and displaying the post-earthquake function of a medical building shown in Figure 6.

[0060] S61: Using all the components in the BIM of the medical building, obtain the engineering requirement parameters, fragility curves of various components.

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

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

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

[0064] The function failure probability of the medical building is defined as the outage probability of the 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 the medical building is related to the outage probability of the medical building by introducing the floor node, so as to establish the outage probability fault tree model of the medical building in earthquake scenes.

[0065] S64: Complete a post-earthquake functional assessment of a medical building using fault tree models.

[0066] The fragility analysis can determine the failure probability of various components, and the fault tree model can be used to relate the damage probability of components to the functional loss of departments, 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 into 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 downtime probability of the medical building, the downtime 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 the vulnerable path of the medical function of the medical building under the action of 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 post-earthquake functional evaluation system for a medical building considering the multi-level combination of components, departments, and floors. Figure 7 shows a schematic diagram of the configuration of a post-earthquake functional evaluation system for a medical building considering the multi-level combination of components, departments, and floors according to the embodiment of the present invention. The system includes: an acquisition module 71 used for acquiring a fault tree model of a department, the fault tree model of the department being established according to a 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; an establishment module 72, which is used for obtaining the distribution and number of each medical department in the medical building on the floor, and establishing the multi-hierarchical connection relationship of components-departments-floors of the entire medical building according to the fault tree model of the department, and forming the fault tree model of the medical building; A first determination module 73 for 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 scene based on the vulnerability information of each of the components and the engineering requirement parameters; A second determination module 74 is used for determining the post-earthquake failure probability of the medical building in the predetermined earthquake scene according to the damage probability of each of the components in the predetermined earthquake scene and the multi-hierarchical coupling relationship of the components-departments-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 scenes based on the post-earthquake functional failure probability in each of the specified earthquake scenes and each of the multi-layer 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, thereby realizing a multi-level functional coupling relationship of components-departments-floors; Correlate the earthquake damage status of the structural members, non-structural members and medical equipment in each medical department of the medical building with the overall loss of medical function of the medical building, and evaluate the post-earthquake function failure probability of the entire medical building in different earthquake scenarios according to the damage probability of the members of each medical department in different earthquake scenarios; According to the obtained 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 are obtained, and the earthquake resistance is appropriately improved according to the identified weak points; The above-mentioned component-department-floor multi-hierarchical connection relationships are causal relationships between all components included in the medical department and the medical functions of the medical department, obtained in accordance with the relationships between all components included in the medical department and each system in the medical department, and the relationships between each system in the medical department and the medical functions of the medical department, and are further causal relationships 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 according to 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 of medical buildings and improving the seismic toughness of medical buildings.

[0072] Regarding the system of this embodiment, its realization principle and the technical effects produced are similar to those of the above embodiments, and in order to simplify the explanation, for the parts not described in the apparatus embodiments, reference may 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 realize 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 of the above embodiments can be completed by issuing instructions to a control device via a computer program, the program 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] In this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between those entities or operations. And the terms "comprise", "comprises", or any other variant thereof are intended to cover a non-exclusive inclusion, whereby a process, method, article, or device that includes a set of elements includes not only those elements, but also other elements not expressly listed or elements inherent to the process, method, article, or device. In the absence of further limitations, an element qualified by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the 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 referred to each other.

[0078] The above description of the disclosed embodiments enables one 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 these 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 connections between components, departments, and floors, comprising: A processor obtains a fault tree model of a department, the fault tree model of the department being established according to a mapping relationship between components included in each medical department in a medical building and an overall medical function of the medical department; The processor obtains the distribution and number of each medical department in the medical building on the floor, and establishes a multi-hierarchical connection relationship of components-departments-floors of the entire medical building based on the fault tree model of the department, thereby forming a fault tree model of the medical building; The processor 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 demand parameters, and determines the damage probability of each of the components in a predetermined earthquake scene based on the vulnerability information of each of the components and the engineering demand parameters; The processor determines a post-earthquake 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 coupling relationship of components-departments-floors of the medical building; The method for evaluating post-earthquake functionality of a medical building taking into account component-department-floor connections, characterized in that the processor identifies vulnerable paths 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-hierarchical connection relationships, and determines a strategy for improving the seismic resistance of the medical building based on the vulnerable paths.

2. The step of establishing a multi-hierarchical connection relationship of components-departments-floors of the entire medical building based on the fault tree model of the department includes: the processor 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 evaluating the post-earthquake functionality of a medical building taking into account component-department-floor connections as described in claim 1, further comprising a step in which the processor establishes a medical function logic of a component-department hierarchy through a department fault tree model based on the components contained in each of the medical departments and the distribution and number of each of the medical departments in the medical building, and further introduces floor nodes to establish a multi-hierarchical component-department-floor connection relationship for the entire medical building.

3. The step of establishing a multi-level component-department-floor coupling relationship of the entire medical building includes: The method for evaluating the post-earthquake functionality of a medical building taking into account component-department-floor coupling, as described in claim 1, further comprising a step in which the processor determines a mapping relationship between the medical departments and floors of the medical building based on the distribution number of each of the medical departments on the floor, and establishes a multi-hierarchical component-department-floor coupling relationship by introducing a floor node 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 evaluating the post-earthquake functionality of a medical building taking into account component-department-floor coupling, as described in claim 1, further comprising a step in which the processor converts the building information model of the medical building into a corresponding elastic-plastic analysis model, performs an elastic-plastic time history response analysis on the elastic-plastic analysis model, and calculates the engineering requirement parameters of the structure of the medical building, the engineering requirement parameters including inter-floor displacement angles and floor accelerations.

5. The method for post-earthquake functional evaluation of a medical building taking into account component-department-floor coupling as described in Claim 4, characterized in that the processor further comprises a 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 the medical function of the medical building in the predetermined earthquake scene according to the post-earthquake function failure probability in each of the predetermined earthquake scenes and each of the multi-layer connection relationships is performed, 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 a step of mapping the damage probability of components contained in the medical department and the post-earthquake functional failure probability corresponding to the medical department onto a 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 evaluating the post-earthquake functionality of a medical building taking into account the connections between components, departments, and floors, as described in claim 1, characterized in that the improvement strategies include improving the earthquake 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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