Hospital area post-earthquake function evaluation method and system considering building function coupling

Abstract

The invention provides a hospital district post-earthquake function evaluation method and a hospital district post-earthquake function evaluation system considering building function coupling, and relates to the technical field of buildings. The waiting time when a patient enters a corresponding process related department is used as an evaluation basis to visually display an evaluation result, and resource change of a typical department is determined through vulnerability analysis and a fault tree model, so that the decomposition of post-earthquake function evaluation of a hospital district to post-earthquake damage determination of components in the typical department is realized; the method provides an important means for evaluating the post-earthquake function of the hospital district, and has important significance for designing and transforming the hospital district and improving the shock resistance and toughness of the hospital district.

Description

Technical Field

[0001] The present invention relates to the field of building technology, and in particular to a method and system for evaluating the post-earthquake function of a hospital campus taking building function coupling into consideration. Background Art

[0002] Hospital campuses play an important role in treating the wounded after an earthquake. Different medical buildings play different roles in treating the wounded after an earthquake. All hospital departments must work together after an earthquake to respond more quickly to the challenges brought about by the earthquake disaster.

[0003] According to actual statistics, the vast majority of injured people caused by earthquakes need to be sent to hospitals for diagnosis and treatment. Earthquakes can also cause interruptions in the functions of different medical buildings in hospital campuses, resulting in the inability of the injured to receive effective treatment. In addition, it takes a lot of time to repair different medical buildings in hospital campuses after the earthquake, which seriously affects the efficiency of treating the injured.

[0004] At present, most studies focus on the post-earthquake function evaluation of emergency departments or single medical buildings, and are unable to evaluate the post-earthquake function of different medical buildings combined in a hospital campus. Summary of the invention

[0005] To solve the above problems, an embodiment of the present invention provides a method for evaluating the post-earthquake function of a hospital campus taking into account the coupling of building functions, including: obtaining the medical treatment process of patients with different injury levels after the earthquake and the connection between the medical functions of various medical buildings in the hospital campus; establishing a discrete event simulation model for the post-earthquake treatment of patients in the hospital campus according to the medical treatment process and the connection; establishing an elastic-plastic analysis model according to the architectural drawings, structural drawings and equipment drawings of each of the medical buildings and calculating the probability of damage to the components when encountering an earthquake; establishing a fault tree model through the components included in different medical departments, and calculating the shutdown probability of the medical department based on the destruction probability of the components when encountering an earthquake and the fault tree model; calculating the waiting time for patients to enter a typical department in an intact state based on the discrete event simulation model; and reducing the number of available medical resources of the corresponding department according to the shutdown probability of each medical department, and calculating the waiting time for patients to enter a typical department in a damaged state based on the discrete event simulation model; evaluating the post-earthquake function of the hospital campus according to the changes in the waiting time for patients to enter the typical department in the intact state and the damaged state.

[0006] The post-earthquake function evaluation method of a hospital campus taking into account the coupling of building functions provided in an embodiment of the present invention establishes a discrete event simulation model for the post-earthquake function evaluation of a hospital campus, and uses the waiting time of patients entering departments involved in corresponding processes as the evaluation basis to intuitively display the evaluation results, determines the resource changes of typical departments through vulnerability analysis and fault tree models, and realizes the decomposition of the post-earthquake function evaluation of the hospital campus into the determination of post-earthquake damage of components in typical departments, which provides an important means for evaluating the post-earthquake function of the hospital campus and is of great significance to the design and renovation of the hospital campus and improving the seismic resilience of the hospital campus.

[0007] Optionally, obtaining the medical treatment process of patients with different injury levels after the earthquake and the connection between the medical functions of various medical buildings in the hospital campus include: obtaining the medical treatment process of patients after the earthquake based on the medical treatment of patients with different injury levels in the hospital; determining the route of patients when entering the departments involved in the medical treatment process by sorting out the distribution of departments in different medical buildings in the hospital campus and the basic principles of their architectural design, and obtaining the connection between the medical functions of various medical buildings in the hospital campus; the buildings with medical functions in the hospital campus include an outpatient building, an emergency building, a medical technology building, and a ward building; the emergency building includes the functions of a rescue room and an EICU, the medical technology building includes the functions of an imaging center, an operating room, an ICU, and a CCU, and the ward building includes the function of an inpatient ward.

[0008] In the embodiment of the present invention, it is possible to determine whether a patient enters the medical treatment process through the medical treatment situation, and to determine the connection between the medical functions of the medical buildings by combing the distribution of departments in different medical buildings in the hospital campus and the basic principles of their architectural design, thereby considering the functional coupling relationship between the buildings in the hospital campus in the post-earthquake functional evaluation.

[0009] Optionally, the post-earthquake patient treatment process includes: red-coded patients: triage → emergency room → imaging center → operating room → ICU → general ward → discharge; yellow-coded patients: triage → emergency room / EICU → imaging center → operating room → ICU → general ward → discharge. For yellow-coded patients whose injuries are not serious after examination, the treatment process is: triage → emergency room / EICU → imaging center → general ward → discharge; green-coded patients: triage → general ward / discharge.

[0010] In the embodiment of the present invention, corresponding medical consultation processes are determined for different types of patients.

[0011] Optionally, the red-coded patients are patients whose vital functions are impaired, changed or unstable, the yellow-coded patients are patients who are not in direct danger of life but whose vital functions are partially impaired, and the green-coded patients are patients who are not in critical condition, are not in danger of life, and whose injuries will not affect their vital functions.

[0012] In the embodiment of the present invention, the patient's physical condition is specifically divided into multiple types, thereby determining the different states of the patient.

[0013] Optionally, the discrete event simulation model for post-earthquake treatment of patients in a hospital campus is established based on the medical treatment process and the connection, including: determining the department involved for each coded patient based on the medical treatment process of the different coded patients, and determining the medical treatment route for each coded patient in the hospital campus based on the connection between the medical functions of the involved departments and the medical buildings; and establishing a discrete event simulation model for post-earthquake treatment of patients in the hospital campus based on the medical treatment route.

[0014] In the embodiment of the present invention, the departments involved in each coded patient are determined based on the differences in the medical treatment processes of patients with different codes, and the patient's medical treatment route in the hospital campus is determined through the distribution of departments in different medical buildings in the hospital campus, thereby combining the patient's medical treatment process with the actual situation of the hospital campus, and determining a discrete event simulation model for treating patients in the hospital campus after the earthquake according to the actual situation of the hospital campus.

[0015] Optionally, reducing the quantity of available medical resources of each medical department by the shutdown probability of each medical department comprises: the input event of the fault tree model is the destruction probability of each component of the typical department after the earthquake, and the output event of the fault tree model is the post-earthquake functional shutdown probability of the typical department; and reducing the quantity of available medical resources corresponding to the typical department according to the post-earthquake functional shutdown probability of the typical department and the distribution of the typical departments in medical buildings.

[0016] In the embodiment of the present invention, the change in available resources of relevant departments after an earthquake is determined by the outage probability of the above-mentioned typical departments. By determining the outage probability of the typical departments and the distribution of the typical departments in the medical building, the corresponding resources of the typical departments are directly reduced in quantity. The available resources of each typical department in the hospital campus under intact and earthquake-damaged conditions are different. The available resources under intact conditions are all resources of each typical department, and the available resources under earthquake-damaged conditions are the reduced resources.

[0017] Optionally, the calculation of the waiting time for patients to enter a typical department in an intact state based on the discrete event simulation model, and the calculation of the waiting time for patients to enter a typical department in an earthquake-damaged state based on the discrete event simulation model, include: taking the number of patients entering the hospital campus for treatment every day and the number of resources in the typical department of the hospital campus as input data of the discrete event simulation model, and the output data is the waiting time for patients to enter a typical department in an intact state; taking the number of patients entering the hospital campus for treatment every day after the earthquake and the reduced number of resources in the typical department of the hospital campus as input data of the discrete event simulation model, and the output data is the waiting time for patients to enter a key department in an earthquake-damaged state.

[0018] In the embodiment of the present invention, the waiting time of the same department under the same process is compared for patients with different codes, so as to associate the change of the waiting time with the post-earthquake function of the hospital district, and complete the post-earthquake function evaluation of the hospital district.

[0019] Optionally, the waiting time is the waiting time for patients with different codes when entering typical departments involved in the medical treatment process, wherein the typical departments include the emergency room, EICU, operating room, ICU ward, imaging center, and ward.

[0020] In the embodiment of the present invention, the waiting time is specifically defined as the average daily waiting time of patients when entering typical departments involved in the medical treatment process. Based on the discrete event simulation model, the waiting time of patients entering key departments in intact and damaged states is determined and compared, and it is used as a standard for evaluating the post-earthquake function of the hospital campus to evaluate the post-earthquake function of the hospital campus.

[0021] Optionally, establishing a fault tree model through components included in different medical departments includes: determining the components included in each typical department based on the department attributes of each component, and establishing a typical department fault tree model by establishing a logical relationship between each of the components and the typical department; the components include structural components, non-structural components and medical equipment of the typical departments.

[0022] The embodiment of the present invention provides a specific process for establishing a fault tree model, and the waiting time can be determined based on the discrete event simulation model as a criterion for evaluating the post-earthquake function of a hospital campus.

[0023] The embodiment of the present invention provides a hospital campus post-earthquake function evaluation system that takes into account the coupling of building functions, including: an acquisition module, used to obtain the medical treatment process of patients with different injury levels after the earthquake, and the connection between the medical functions of various medical buildings in the hospital campus; a model establishment module, used to establish a discrete event simulation model for treating patients in the hospital campus after the earthquake according to the medical treatment process and the connection; a destruction probability determination module, used to establish an elastic-plastic analysis model according to the architectural drawings, structural drawings and equipment drawings of each of the medical buildings and calculate the destruction probability of the components when encountering an earthquake; a deactivation probability determination module, used to determine the deactivation probability of the components according to the medical departments included in the medical departments. A fault tree model is established for each component, and the probability of the medical department being out of service is calculated based on the probability of damage of the component when encountering an earthquake and the fault tree model; a determination module is used to calculate the waiting time for patients to enter a typical department in an intact state based on the discrete event simulation model; and the number of available medical resources of each medical department is reduced by the outage probability of each medical department, and the waiting time for patients to enter a typical department in an earthquake-damaged state is calculated based on the discrete event simulation model; an evaluation module is used to evaluate the post-earthquake function of the hospital campus according to the change in the waiting time for patients to enter a typical department in the intact state and the earthquake-damaged state.

[0024] The post-earthquake function evaluation system for a hospital campus taking into account the coupling of building functions provided by an embodiment of the present invention can achieve the same technical effect as the post-earthquake function evaluation method for a hospital campus taking into account the coupling of building functions described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0026] Figure 1 A flow chart of a method for evaluating the post-earthquake function of a hospital campus taking into account the coupling of building functions provided by an embodiment of the present invention;

[0027] Figure 2 This is a flow chart of post-earthquake patient consultation in an embodiment of the present invention;

[0028] Figure 3 A schematic diagram of a discrete event simulation model for post-earthquake functional evaluation of a hospital campus provided by an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of a model of a hospital campus in an embodiment of the present invention;

[0030] Figure 5 In the embodiment of the present invention Figure 4 The elastic-plastic model of 4 different medical buildings decomposed in the hospital campus is shown;

[0031] Figure 6 A fault tree model of a typical department in an embodiment of the present invention;

[0032] Figure 7a It is a schematic diagram comparing the average daily waiting time for red-coded patients to enter the emergency room after resource reduction in the intact and damaged states in an embodiment of the present invention;

[0033] Figure 7b It is a schematic diagram comparing the average daily waiting time for yellow-coded patients in intact and damaged states to enter the emergency room and EICU in an embodiment of the present invention;

[0034] Figure 7c It is a schematic diagram showing a comparison of the average daily waiting time of red-coded patients and yellow-coded patients entering the operating room in the intact and damaged states in an embodiment of the present invention;

[0035] Figure 8A schematic structural diagram of a post-earthquake function evaluation device for a hospital campus taking into account the coupling of building functions provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0037] At present, the suspension of relevant departments in medical buildings after earthquakes has slowed down the rate of treating the wounded and the functional recovery capacity is poor. Different medical buildings in hospital campuses have different functions in treating the wounded after the earthquake. All hospital departments must work together after the earthquake to respond more quickly to the challenges brought by the earthquake disaster. Therefore, it is necessary to conduct a post-earthquake functional evaluation of existing hospital campuses to determine their seismic resilience level and provide data support and decision-making support for subsequent hospital campus renovation design planning. Existing methods mainly evaluate the functions of emergency departments with key medical systems. The main methods used include fault tree method, system dynamics method, discrete event simulation, etc., while there are few studies on post-earthquake functional evaluation methods for hospital campuses.

[0038] In order to improve the above-mentioned problems, an embodiment of the present invention provides a method for evaluating the post-earthquake function of a hospital campus that takes into account the coupling of building functions. By obtaining the post-earthquake patient treatment process, the relationship between different medical buildings in the hospital campus is established, and based on this, a discrete event simulation model for the post-earthquake function evaluation of the hospital campus is established. Then, the shutdown probability of each typical department is determined based on the fault tree model, and the post-earthquake damage of the resources of each department is obtained according to the shutdown probability, so as to determine the average daily waiting time for patients in the intact state and the damaged state to enter the department involved in the corresponding process, and the change in the average daily waiting time is used as an important parameter for the post-earthquake function evaluation of the hospital campus to evaluate the post-earthquake function of the hospital campus. This evaluation method is of great significance to the seismic reinforcement of hospital campuses. The following is a detailed introduction to the embodiments of the present invention.

[0039] The embodiment of the present invention provides a post-earthquake function evaluation method for a hospital campus taking into account the coupling of building functions, see Figure 1 The flowchart of the post-earthquake function evaluation method of the hospital campus considering the coupling of building functions is shown in FIG. The method mainly includes the following steps:

[0040] S102, obtain the medical treatment process of patients with different injury levels after the earthquake and the connection between the medical functions of various medical buildings in the hospital campus.

[0041] The above-mentioned post-earthquake patient treatment process and the relationship between the various buildings in the hospital campus are important bases for establishing and evaluating the post-earthquake function of the hospital campus. In one embodiment, the post-earthquake patient treatment process can be obtained based on the hospital treatment of patients with different injuries, and then the relationship between the various medical buildings in the hospital campus can be determined based on the departments involved in the post-earthquake patient treatment process. Furthermore, analysis can be performed based on the actual situation of the hospital campus studied by the user.

[0042] Specifically, the post-earthquake patient treatment process was obtained based on the hospital treatment of patients with different injury levels. Then, by sorting out the distribution of departments in different medical buildings on the hospital campus and the basic principles of architectural design, the patient's route when entering the department involved in the treatment process was determined, and the connection between the medical functions of various medical buildings on the hospital campus was obtained.

[0043] Among them, the buildings with medical functions in the hospital campus include the outpatient building, emergency building, medical technology building, and ward building; the emergency building includes the functions of the rescue room and EICU (Emergency Intensive Care Unit), the medical technology building includes the functions of the imaging center, operating room, ICU (Intensive Care Unit), and CCU (Coronary heart disease Care Unit), and the ward building includes the functions of the inpatient ward.

[0044] In this embodiment, the department corresponding to the medical building that the patient enters when seeing a doctor is determined by sorting out the distribution of departments in different medical buildings and the basic principles of their architectural design, so as to determine the specific functional classification of the hospital campus and decompose the hospital campus into medical departments of different medical buildings.

[0045] For example, the medical consultation process for post-earthquake patients can be divided into the following categories:

[0046] Red-coded patients: triage → emergency room → imaging center → operating room → ICU → general ward → discharge;

[0047] Yellow-coded patients: triage → emergency room / EICU → imaging center → operating room → ICU → general ward → discharge. For yellow-coded patients whose injuries are not serious after examination, the treatment process is: triage → emergency room / EICU → imaging center → general ward → discharge;

[0048] Green coded patients: Triage → General ward / discharge.

[0049] Among them, red-coded patients are those whose vital functions are impaired, changed or unstable, yellow-coded patients are those who are not in direct danger of life but whose vital functions are partially impaired, and green-coded patients are those who are not in critical condition, not in danger of life, and whose injuries will not affect their important functions.

[0050] S104, establishing a discrete event simulation model for treating patients after the earthquake in a hospital area based on the above-mentioned medical treatment process and connections.

[0051] Among them, by determining the post-earthquake patient treatment process and the relationship between the various medical buildings in the hospital area, the patient's route for treatment in the hospital area can be determined, thereby establishing a discrete event simulation model for the post-earthquake treatment of patients in the hospital area. The model can reflect the waiting time of patients with different codes after the earthquake when entering the departments involved in the treatment process.

[0052] Specifically, the departments involved for each coded patient are determined based on the medical treatment process of patients with different codes, and the treatment routes of each coded patient in the hospital campus are determined based on the connection between the medical functions of the involved departments and medical buildings. Then, a discrete event simulation model for the post-earthquake treatment of patients in the hospital campus is established based on the treatment routes.

[0053] In this embodiment, the discrete event simulation model of the post-earthquake patient treatment in the hospital area corresponds to the post-earthquake patient treatment process, including the entire process of patients with different codes from entering the hospital to leaving the hospital. Among them, the discrete event simulation model uses the number of patients entering the hospital area for treatment every day after the earthquake and the number of resources in typical departments as input data. Different processes involve different departments and require different treatment times. The treatment time of different typical departments is determined through literature research, expert consultation, etc. as the basis for the patient's stay time in the relevant department, thereby forming a discrete event simulation model for the post-earthquake patient treatment in the hospital area.

[0054] S106, establishing an elastic-plastic analysis model based on the architectural drawings, structural drawings and equipment drawings of each medical building and calculating the probability of damage to the components when encountering an earthquake.

[0055] Based on Perform-3D, an elastic-plastic analysis model of each medical building is established. By performing elastic-plastic analysis calculation on the elastic-plastic analysis model of each medical building, engineering demand parameters such as inter-story displacement angle and floor acceleration can be obtained. Based on the engineering demand parameters and the obtained vulnerability information of structural components, non-structural components and medical equipment involved in different medical buildings, the functional shutdown probability of each component under different earthquake scenarios is calculated.

[0056] Among them, the beams, columns and shear walls of each building are simulated using fiber models, and the material constitutive model of concrete and steel bars is defined using five-fold and three-fold lines respectively.

[0057] Specifically, the step of calculating the probability of damage of components when encountering an earthquake includes: performing an elastic-plastic time-history analysis on the elastic-plastic analysis model to obtain engineering demand parameters of the medical building structure, and determining the probability of damage of each component when encountering an earthquake according to the engineering demand parameters. The engineering demand parameters include inter-story displacement angle and floor acceleration.

[0058] S108, establishing a fault tree model through components included in different medical departments, and calculating the shutdown probability of the medical departments based on the damage probability of the components when encountering an earthquake and the fault tree model.

[0059] First, the components included in each typical department are determined based on the department attributes of each component; then, a typical department fault tree model is established by establishing the logical relationship between each component and the typical department. The above components may include structural components, non-structural components and medical equipment of each typical department.

[0060] Specifically, a fault tree analysis is performed on the interdependent logical relationship between the components of each typical department and the medical functions of the department, and a fault tree model corresponding to each typical department is established. Among them, some components in the typical department form an "or" relationship according to the logical dependency relationship, that is, if one component in each department is damaged, it will affect the use of the department; some components under each department form an "and" relationship according to the logical dependency relationship, that is, only when all the components of each department are damaged will it affect the department.

[0061] S110, calculating the waiting time for patients to enter a typical department in an intact state based on a discrete event simulation model; and reducing the number of available medical resources in the corresponding department according to the shutdown probability of each medical department, and calculating the waiting time for patients to enter a typical department in a damaged state based on a discrete event simulation model.

[0062] The change in the number of medical department resources reflects the seismic resistance of the hospital campus after the earthquake. The seismic resistance of the hospital campus is decomposed into an evaluation of the damage of components in different medical building departments, thereby obtaining the impact of the preset earthquake on the hospital campus.

[0063] The change in available resources of relevant departments after the earthquake is determined by the above-mentioned outage probability of typical departments, and the corresponding resources of typical departments are directly reduced in quantity by determining the outage probability of typical departments and the distribution of typical departments in medical buildings. Specifically, the input event of the above-mentioned fault tree model is the destruction probability of each component of the typical department after the earthquake, and the output event of the fault tree model is the outage probability of the typical department after the earthquake.

[0064] In this embodiment, the available medical resources corresponding to the typical departments can be reduced in quantity according to the post-earthquake functional shutdown probability of the above-mentioned typical departments and the distribution of the typical departments in the medical building. Among them, all components corresponding to each department are determined according to the fault tree of different department functions, and all components corresponding to each department constitute an available resource unit of one department.

[0065] S112, evaluate the post-earthquake function of the hospital campus based on the changes in waiting time for patients to enter typical departments under intact and damaged conditions.

[0066] Based on the discrete event simulation model for the post-earthquake treatment of patients in the hospital district established above, the waiting time for patients to enter the corresponding process involved in the departments under the intact and damaged states is determined. The available resources of each typical department in the hospital district under the intact and damaged states are different. The available resources in the intact state are all the resources of each typical department, and the available resources in the damaged state are the reduced resources. The waiting time of the same department under the same process is compared for patients with different codes, so as to associate the change of waiting time with the post-earthquake function of the hospital district and complete the post-earthquake function evaluation of the hospital district.

[0067] Specifically, the number of patients entering the hospital campus for treatment every day and the number of resources in the typical departments of the hospital campus are used as the input data of the discrete event simulation model, and the output data is the waiting time for patients to enter the typical departments under the damage-free state; the number of patients entering the hospital campus for treatment every day after the earthquake and the reduced number of resources in the typical departments of the hospital campus are used as the input data of the discrete event simulation model, and the output data is the waiting time for patients to enter the key departments under the earthquake-damaged state.

[0068] Among them, the waiting time is the waiting time of patients with different codes when they enter the typical departments involved in the medical process, among which the typical departments include the emergency room, EICU, operating room, ICU ward, imaging center, and ward. The input data of the discrete event simulation model is the number of patients entering the hospital campus for treatment every day and the number of resources in the typical departments of the hospital campus. The output is the waiting time when the patient enters the department involved in the corresponding process. By classifying and sorting the waiting time of the above patients, the average daily waiting time of patients with different codes when entering the department involved in the corresponding process is obtained.

[0069] The post-earthquake function evaluation method of the hospital campus provided in this embodiment establishes a discrete event simulation model for the post-earthquake function evaluation of the hospital campus by obtaining the post-earthquake patient treatment process and the distribution of typical departments in the medical buildings in the hospital campus, and determines the probability of functional shutdown of typical departments after the earthquake by establishing an elastic-plastic analysis model of each medical building in the hospital campus and a fault tree model of typical departments distributed therein, thereby determining the number of resources in each typical department in the intact and damaged states. Based on the discrete event simulation model for the post-earthquake function evaluation of the hospital campus, the waiting time for patients to enter the key departments in the intact and damaged states is determined and compared, and it is used as a standard for evaluating the post-earthquake function of the hospital campus to evaluate the post-earthquake function of the hospital campus. This evaluation method improves the efficiency of the post-earthquake function of the hospital campus and provides important data support for the subsequent reinforcement and renovation of the hospital campus.

[0070] In one embodiment, a discrete event simulation model is provided for obtaining the post-earthquake patient treatment process and the relationship between the medical buildings in the hospital campus to establish the post-earthquake function evaluation of the hospital campus. For details, refer to the following steps (1) to (3):

[0071] Step (1): Determine the post-earthquake patient treatment process based on the treatment process of patients with different injury types, such as Figure 2 The post-earthquake patient treatment flow chart, in which arrows are used to connect the upper and lower processes, and arrows of different shades represent patients with different codes.

[0072] Step (2): Obtain the distribution of medical buildings in the hospital campus and the distribution of departments in the medical buildings to determine the relationship between medical buildings in the hospital campus.

[0073] Step (3): Combine the post-earthquake patient treatment process with the relationship between the various medical buildings in the hospital campus to establish a discrete event simulation model for the post-earthquake function evaluation of the hospital campus. Figure 3 A schematic diagram of a discrete event simulation model for post-earthquake functional evaluation of a hospital campus provided by an embodiment of the present invention is shown. The model is established based on the distribution of departments in the hospital campus and the patient consultation process, so the discrete event simulation model will reflect the situation where the patient's floor changes when entering the next process from the previous process.

[0074] The hospital campus is a complex system consisting of multiple medical buildings, and the departments distributed in different medical buildings will also vary according to different functions. In this embodiment, the post-earthquake functional impact of the hospital campus is decomposed into the damage probability of components in different departments distributed in each medical building. Figure 4 A schematic diagram of a hospital campus model provided by an embodiment of the present invention is shown.

[0075] In one embodiment, this embodiment provides a specific implementation method of obtaining an elastic-plastic analysis model of each medical building, performing an elastic-plastic time-history analysis calculation on the elastic-plastic analysis model to obtain engineering demand parameters, and determining the damage probability of each component under a preset earthquake scenario based on the vulnerability information of each component and the engineering demand parameters:

[0076] Establish an elastic-plastic analysis model based on Perform-3D. Figure 5 for Figure 4 The elastic-plastic models of four different medical buildings decomposed in the hospital campus are shown. The elastic-plastic time-history analysis model is used to calculate the engineering demand parameters of each medical building structure; wherein the engineering demand parameters include the inter-story displacement angle and the floor acceleration; based on the vulnerability information of each component, the engineering demand parameters and the seismic vulnerability model, the damage probability of each component under the preset earthquake scenario is determined.

[0077] In a specific implementation, a fault tree analysis can be performed on the damage information and medical functions of the components of each typical department to establish a fault tree model corresponding to each typical department; wherein the input event of the fault tree model is the failure probability of each component of the typical department after the earthquake, and the output event of the fault tree model is the probability of functional disuse of the typical department after the earthquake.

[0078] According to the relationship between the damage of all components contained in a typical department and the systems of a typical department (such as structural system, enclosure system, HVAC system, power supply system, water supply system, drug supply system, transport system and professional equipment system), as well as the relationship between the systems of a typical department and the medical functions of a typical department, the causal relationship between the damage of all components contained in a typical department and the medical functions of a typical department can be obtained, thereby establishing a fault tree model of a typical department, such as Figure 6A fault tree model of a typical department is shown, in which the typical department is represented as the emergency room. The top-level event of the functional fault tree model of the emergency room is the shutdown of the emergency room. The shutdown of the emergency room is divided into the shutdown of basic functions or the shutdown of system functions. The basic functions and system functions have an "or" relationship with the shutdown of the operating room. The basic functions include the structural system, maintenance system, HVAC system, power supply system, and water supply system, which have an "or" relationship with the basic functions. The system functions include the drug supply system, transportation system, and professional equipment system, which have an "or" relationship with the system functions. The emergency room The drug supply system includes medical supply cabinets and medicine cabinets, and the relationship between the two is "or", that is, damage to one of the medical supply cabinets and the medicine cabinet will affect the deactivation of the drug supply system. The transfer system in the emergency room includes simple rescue vehicles and multi-functional rescue vehicles, and the relationship between the two and the transfer system is "and", that is, damage to the simple rescue vehicle and the multi-functional rescue vehicle at the same time will affect the deactivation of the transfer system. The professional equipment system in the emergency room includes endotracheal intubation box, cardiac defibrillator, monitor, ventilator, gastric lavage machine, cardiac pacemaker and electrocardiograph, and its relationship with the professional equipment system is "or".

[0079] Figure 6 Among them, E1 indicates structural system damage; E2 indicates floor damage; E3 indicates partition wall damage; E4 indicates ceiling damage; E5 indicates heating pipe damage; E6 indicates air conditioning unit damage; E7 indicates power distribution cabinet failure; E8 indicates ordinary power supply failure; E9 indicates emergency generator failure; E10 indicates water supply pipe failure; E11 indicates cooling tower damage; E12 indicates water tank failure; E13 indicates water pump failure; E14 indicates overturning of supplies cabinet; E15 indicates overturning of medicine cabinet; E16 indicates sliding of simple rescue vehicle exceeding 1m; E17 indicates sliding of multi-functional rescue vehicle exceeding 1mm; E18 indicates overturning of intubation box; E19 indicates defibrillator failure; E20 indicates monitor failure; E21 indicates ventilator failure; E22 indicates gastric lavage machine failure; E23 indicates pacemaker failure; E24 indicates electrocardiograph failure.

[0080] The earthquake damage information events of various components constitute the basic events in the fault tree. The probability of occurrence of the basic events (i.e., the probability of earthquake damage) can be used to calculate the probability of occurrence of the top-level events through the logic of the fault tree, i.e., the probability of post-earthquake functional disabling of the typical departments. For example, in the above case, the post-earthquake functional disabling probabilities of the typical departments are: 6.14% for the imaging center, 2.03% for the operating room, 2.38% for the ICU, 3.05% for the CCU, 12.76% for the EICU, 6.55% for the emergency room, and 16.63% for the general ward.

[0081] In one embodiment, a specific implementation method for determining the number of resources of each medical department is based on the distribution of departments in each medical building in the hospital campus and the changes in the available resources of relevant departments after the earthquake: the hospital campus includes an outpatient building, a medical technology building, and two inpatient buildings, wherein the medical technology building includes an emergency department. Based on the statistics of the patient's medical treatment process after the earthquake, it can be determined that the departments involved in the patient entry process include the imaging center, operating room, ICU, CCU, EICU, emergency room, and general ward. Exemplarily, through the statistics of the distribution of departments in each medical building, the number of resources of each medical department can be obtained as follows: the imaging center has 13 units of resources, the operating room has 17 units of resources, the ICU has 30 units of resources, the CCU has 21 units of resources, the EICU has 11 units of resources, the emergency room has 9 units of resources, and the general ward has 910 units of resources, wherein 1 unit of resources refers to all components included in the system function in the established fault tree model of each medical department. According to the outage probability of each medical department determined by the typical department function logic fault tree model in the above implementation mode, the change of available resources of the department after the earthquake is determined. Taking the emergency room as an example, the outage probability of the emergency room under the preset earthquake scenario is 6.55%, and the available unit quantity resources of the emergency room are 9. The available unit quantity resources of the emergency room are directly physically calculated as follows: 9x6.55%=0.5895≈1, so the available unit quantity resources of the emergency room after the earthquake are 8. This method can be used to determine the change of the available resource quantity of other related departments after the earthquake, among which the imaging center has 12 unit quantity resources, the operating room has 17 unit quantity resources, the ICU has 29 unit quantity resources, the CCU has 20 unit quantity resources, and the general ward has 814 unit quantity resources.

[0082] In one embodiment, a specific implementation method for determining and comparing the waiting time of patients entering the corresponding process-related departments in the intact and damaged states according to the discrete event simulation model of the hospital campus post-earthquake function evaluation is as follows: the number of patients entering the hospital campus for treatment every day and the number of unit resources of each medical building distribution department are input into the discrete event simulation model of the hospital campus post-earthquake function evaluation, and the waiting time of each patient entering the process-related department can be obtained through the characteristics of the discrete event simulation model. The waiting time of patients with different codes is counted and classified respectively to calculate the daily average waiting time of patients with different codes entering different departments every day. The daily average waiting time at this time is the waiting time of patients in the intact state. The number of unit resources of each medical building distribution department is adjusted to the number of available resources of the relevant department after the earthquake and the above steps are performed, and the waiting time of each patient entering the process-related department after the earthquake can be obtained. According to the above steps, the daily average waiting time of patients with different codes entering different departments is obtained. The daily average waiting time of patients with the same code entering the same department in the intact and damaged states is compared, and the change of waiting time is observed to complete the post-earthquake function evaluation of the hospital campus.

[0083] like Figure 7a-7c The following is a comparison of the waiting time of patients entering the corresponding departments of the process after resource reduction in the intact and earthquake-damaged states. The horizontal axis is the patient entry time, and the vertical axis is the waiting time when the patient enters the department involved in the process. The solid line in the figure represents the average daily waiting time when the patient enters the department involved in the process in the intact state, and the dotted line in the figure represents the average daily waiting time when the patient enters the department involved in the process after the earthquake. Figure 7a The figure shows a comparison of the average daily waiting time for red-coded patients to enter the emergency room after resource reduction in the intact and damaged states. As shown in the figure, the longest waiting time occurred on the second day. The waiting time on the second day in the intact state was 329.34 minutes, and the waiting time on the second day after the earthquake was 389.91 minutes, an increase of 60.57 minutes. At the same time, on the third day, the waiting time in the emergency room in the intact state was 0.85 minutes, and the waiting time in the emergency room after the earthquake was 14.25 minutes, an increase of 1578.86%. Figure 7b The figure shows a comparison of the average daily waiting time for yellow-coded patients to enter the emergency room and EICU in intact and damaged states. The longest waiting time also occurred on the second day. The waiting time on the second day in the intact state was 4442.59 minutes, and the waiting time on the second day after the earthquake was 4728.66 minutes, an increase of 286.07 minutes. At the same time, the waiting time on the 12th day in the intact state was 14.91 minutes, and the waiting time in the damaged state was 28.53 minutes, an increase of 91.40%. Figure 7cThe figure shows a comparison of the average daily waiting time of red-coded patients and yellow-coded patients entering the operating room in the intact and damaged states, where the waiting time is all below 10 minutes, and there is no difference in the waiting time between the intact and damaged states, indicating that there will be no patient congestion in the operating room.

[0084] The post-earthquake medical function evaluation method for the above-mentioned hospital campus provided by the embodiment of the present invention establishes a discrete event simulation model for the post-earthquake function evaluation of the hospital campus, and uses the waiting time when the patient enters the department involved in the corresponding process as the evaluation basis to intuitively display the evaluation results, and determines the resource changes of the typical department through vulnerability analysis and fault tree model, thereby realizing the decomposition of the post-earthquake function evaluation of the hospital campus into the determination of the post-earthquake damage of components in the typical department, which provides an important means for evaluating the post-earthquake function of the hospital campus and is of great significance to the design, renovation and improvement of the seismic resilience of the hospital campus.

[0085] Figure 8 The schematic diagram of the structure of a hospital campus post-earthquake function evaluation device considering building function coupling provided by an embodiment of the present invention is shown. The device includes the following modules:

[0086] The acquisition module 801 is used to obtain the medical treatment process of patients with different injury levels after the earthquake and the connection between the medical functions of various medical buildings in the hospital area;

[0087] Model building module 802, for building a discrete event simulation model for treating patients after an earthquake in a hospital area according to the medical treatment process and the connection;

[0088] A damage probability determination module 803 is used to establish an elastic-plastic analysis model based on the architectural drawings, structural drawings and equipment drawings of each of the medical buildings and calculate the damage probability of the components when encountering an earthquake;

[0089] The outage probability determination module 804 is used to establish a fault tree model through the components included in different medical departments, and calculate the outage probability of the medical department based on the damage probability of the components when encountering an earthquake and the fault tree model;

[0090] The determination module 805 is used to calculate the waiting time for a patient to enter a typical department in an intact state based on the discrete event simulation model; and to reduce the number of available medical resources of each medical department according to the outage probability of each medical department, and calculate the waiting time for a patient to enter a typical department in a damaged state based on the discrete event simulation model;

[0091] The evaluation module 806 is used to evaluate the post-earthquake function of the hospital campus according to the changes in the waiting time for patients to enter the typical department in the intact state and the damaged state.

[0092] The above-mentioned hospital campus post-earthquake function evaluation device considering the coupling of building functions provided by the embodiment of the present invention establishes a discrete event simulation model for the hospital campus post-earthquake function evaluation by acquiring the post-earthquake patient treatment process and the distribution of departments in each building in the hospital campus, and determines the damage probability of the typical department under the preset earthquake scenario by establishing different medical building elastoplastic analysis models and the functional fault tree model of the typical department, thereby determining the change in the number of available resource units of the typical department, and then obtains the change in the waiting time when the patient enters the department involved in the process in the intact and earthquake-damaged state, and completes the post-earthquake function evaluation of the hospital campus. The evaluation method is simple and provides important reference information for the planning and design of the hospital campus.

[0093] The above-mentioned hospital campus post-earthquake function evaluation system considering the coupling of building functions provided in the embodiment of the present invention has the same implementation principle and technical effects as those in the aforementioned embodiment. For the sake of brief description, for matters not mentioned in the system embodiment, reference can be made to the corresponding contents in the aforementioned method embodiment.

[0094] An embodiment of the present invention provides an electronic device, which includes a processor and a storage device. The storage device stores a computer program that can be run on the processor. When the processor executes the computer program, the steps of the method provided in the above embodiment are implemented.

[0095] An embodiment of the present invention provides a computer-readable medium, wherein the computer-readable medium stores computer-executable instructions. When the computer-executable instructions are called and executed by a processor, the computer-executable instructions prompt the processor to implement the method described in the above embodiment.

[0096] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the control device through a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it may include the processes of the above-mentioned method embodiments, wherein the storage medium may be a memory, a disk, an optical disk, etc.

[0097] In this article, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0098] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0099] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one 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 invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A post-earthquake function evaluation method for a hospital campus considering building function coupling, characterized in that: include: Obtain the medical treatment process for patients with different injury levels after the earthquake and the connection between the medical functions of various medical buildings in the hospital campus; Establishing a discrete event simulation model for treating patients after the earthquake in a hospital area according to the medical treatment process and the connection; Establishing an elastic-plastic analysis model based on the architectural drawings, structural drawings and equipment drawings of each of the medical buildings and calculating the probability of damage to the components when encountering an earthquake; Establishing a fault tree model through components included in different medical departments, and calculating the shutdown probability of the medical department based on the damage probability of the components when encountering an earthquake and the fault tree model; Calculate the waiting time of patients entering a typical department in a lossless state based on the discrete event simulation model; And, reducing the number of available medical resources of each medical department according to the outage probability of each medical department, and calculating the waiting time of patients entering a typical department under a shock damage state based on the discrete event simulation model; The post-earthquake function of the hospital campus is evaluated based on the changes in the waiting time for patients to enter typical departments under the intact state and the damaged state.

2. The method according to claim 1, characterized in that The process of obtaining the medical treatment of patients with different injury levels after the earthquake and the connection between the medical functions of various medical buildings in the hospital campus include: Obtain the post-earthquake patient treatment process based on the hospital treatment of patients with different injury levels; By sorting out the distribution of departments in different medical buildings in the hospital campus and the basic principles of architectural design, the patient's route when entering the department involved in the medical process is determined, and the connection between the medical functions of various medical buildings in the hospital campus is obtained; The buildings with medical functions in the hospital campus include an outpatient building, an emergency building, a medical technology building, and a ward building; the emergency building includes the functions of a rescue room and an EICU, the medical technology building includes the functions of an imaging center, an operating room, an ICU, and a CCU, and the ward building includes the functions of an inpatient ward.

3. The method according to claim 2, characterized in that The post-earthquake patient treatment process includes: Red-coded patients: triage → emergency room → imaging center → operating room → ICU → general ward → discharge; Yellow-coded patients: triage → emergency room / EICU → imaging center → operating room → ICU → general ward → discharge. For yellow-coded patients whose injuries are not serious after examination, the treatment process is: triage → emergency room / EICU → imaging center → general ward → discharge; Green coded patients: Triage → General ward / discharge.

4. The method according to claim 3, characterized in that The red-coded patients are patients whose vital functions are impaired, changed or unstable, the yellow-coded patients are patients who are not in direct danger of life but whose vital functions are partially impaired, and the green-coded patients are patients who are not in critical condition, not in danger of life, and whose injuries will not affect their important functions.

5. The method according to claim 4, characterized in that The discrete event simulation model for treating patients in a hospital area after an earthquake is established according to the medical treatment process and the connection, including: Determine the department involved for each coded patient based on the medical treatment process of the patients with different codes, and determine the medical treatment route of each coded patient in the hospital campus based on the relationship between the medical functions of the involved departments and the medical buildings; A discrete event simulation model for treating patients after the earthquake in the hospital area is established based on the medical treatment route.

6. The method according to claim 1, characterized in that The reducing the quantity of available medical resources of each medical department according to the deactivation probability of each medical department includes: The input event of the fault tree model is the probability of damage to each component of a typical department after an earthquake, and the output event of the fault tree model is the probability of functional disuse of a typical department after an earthquake; According to the probability of the typical departments being disabled after an earthquake and the distribution of the typical departments in medical buildings, the quantity of available medical resources corresponding to the typical departments is reduced.

7. The method according to claim 1, characterized in that The method of calculating the waiting time for a patient to enter a typical department in an intact state based on the discrete event simulation model, and calculating the waiting time for a patient to enter a typical department in a damaged state based on the discrete event simulation model, includes: The number of patients entering the hospital for treatment every day and the number of resources in the typical departments of the hospital are used as input data of the discrete event simulation model, and the output data is the waiting time when the patient enters the typical department in a lossless state; The number of patients entering the hospital campus for treatment every day after the earthquake and the reduced number of resources in the typical departments of the hospital campus are used as input data of the discrete event simulation model, and the output data is the waiting time for patients to enter the key departments under the earthquake damage state.

8. The method according to claim 7, characterized in that The waiting time is the waiting time for patients with different codes when entering typical departments involved in the medical treatment process, wherein the typical departments include the emergency room, EICU, operating room, ICU ward, imaging center, and ward.

9. The method according to claim 1, characterized in that: The fault tree model is established by using components included in different medical departments, including: The components included in each typical department are determined based on the department attributes of each component, and a typical department fault tree model is established by establishing a logical relationship between each component and the typical department; the components include structural components, non-structural components and medical equipment of each typical department.

10. A hospital campus post-earthquake function evaluation system considering building function coupling, characterized in that: include: The acquisition module is used to obtain the medical treatment process of patients with different injury levels after the earthquake and the connection between the medical functions of various medical buildings in the hospital campus; A model building module, for building a discrete event simulation model for treating patients in a hospital area after an earthquake based on the medical consultation process and the connection; A damage probability determination module, used to establish an elastic-plastic analysis model based on the architectural drawings, structural drawings and equipment drawings of each of the medical buildings and calculate the damage probability of the components when encountering an earthquake; A shutdown probability determination module, used to establish a fault tree model through components included in different medical departments, and calculate the shutdown probability of the medical department based on the damage probability of the components when encountering an earthquake and the fault tree model; A determination module, used for calculating the waiting time of a patient entering a typical department in a non-destructive state based on the discrete event simulation model; And, reducing the number of available medical resources of each medical department according to the outage probability of each medical department, and calculating the waiting time of patients entering a typical department under a shock damage state based on the discrete event simulation model; The evaluation module is used to evaluate the post-earthquake function of the hospital campus according to the changes in the waiting time for patients to enter the typical department in the intact state and the damaged state.

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