Post-earthquake functional evaluation method and system for hospital campus considering building functional coupling

Abstract

The present invention provides a method and system for evaluating the post-earthquake function of a hospital campus taking into account the coupling of building functions, relating to the field of building technology. An embodiment of the present invention establishes a discrete event simulation model for evaluating the post-earthquake function of a hospital campus, and uses the waiting time of patients when entering departments involved in corresponding processes as an evaluation basis to intuitively display the evaluation results. Through vulnerability analysis and a fault tree model, the resource changes of typical departments are determined, and the post-earthquake function evaluation of the hospital campus is decomposed into the determination of post-earthquake damage to components in typical departments. This 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.

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 into account the coupling of building functions. Background Art

[0002] Hospital campuses play an important role in treating the injured after an earthquake. Different medical buildings have different functions in treating the injured after an earthquake. All hospital departments must work together after an earthquake to respond more quickly to the challenges brought 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 will also cause the functions of different medical buildings in the hospital campus to be interrupted, resulting in the injured being unable to receive effective treatment. In addition, it takes a lot of time to repair different medical buildings in the hospital campus after the earthquake, which seriously affects the efficiency of treating the injured.

[0004] Currently, 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 within 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 that takes 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 based on 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 the components included in different medical departments, and calculating the outage probability of the medical departments based on the damage 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 each medical department based on the outage probability of each medical department, and calculating the waiting time for patients to enter a typical department in an earthquake-damaged state based on the discrete event simulation model; evaluating the post-earthquake function of the hospital campus based on the changes in the waiting time for patients to enter the typical department in the intact state and the earthquake-damaged state.

[0006] The 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. A discrete event simulation model for the post-earthquake function evaluation of a hospital campus is established, and the waiting time for patients to enter departments involved in the corresponding process is used as the evaluation basis to intuitively display the evaluation results. The resource changes of typical departments are determined through vulnerability analysis and fault tree models, and the post-earthquake function evaluation of the hospital campus is decomposed into the determination of post-earthquake damage to components in typical departments. This provides an important means for evaluating the post-earthquake function of a hospital campus and is of great significance to the design, renovation and improvement of the seismic resilience of the hospital campus.

[0007] Optionally, obtaining the medical treatment process of patients with different levels of injuries 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 situation of patients with different levels of injuries 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 outpatient buildings, emergency buildings, medical technology buildings, and ward buildings; the emergency building contains the functions of the emergency room and EICU, the medical technology building contains the functions of the imaging center, operating room, ICU, and CCU, and the ward building contains the function of the inpatient ward.

[0008] In the embodiment of the present invention, the patient's entry into the medical treatment process can be determined by the medical treatment situation, and the connection between the medical functions of the medical buildings can be determined by sorting out the distribution of departments in different medical buildings in the hospital campus and the basic principles of their architectural design, so as to consider 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 treatment 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 important functions.

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

[0013] Optionally, the discrete event simulation model for the post-earthquake treatment of patients in the 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 of 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 the post-earthquake treatment of patients in the hospital campus based on the medical treatment route.

[0014] In the embodiment of the present invention, the department involved in each coded patient is determined based on the different medical treatment processes of patients with different codes, and the patient's medical treatment route in the hospital campus is determined by 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 post-earthquake patient treatment in the hospital campus according to the actual situation of the hospital campus.

[0015] Optionally, the reduction of the number of available medical resources in each medical department by the shutdown probability of the corresponding department includes: 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; based on the post-earthquake functional shutdown probability of the typical department and the distribution of the typical departments in the medical building, the quantity of available medical resources corresponding to the typical department is reduced.

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

[0017] Optionally, the calculation of the waiting time for patients entering a typical department in an intact state based on the discrete event simulation model, and the calculation of the waiting time for patients entering 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 entering 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 entering a key department in an earthquake-damaged state.

[0018] In the embodiment of the present invention, the waiting time of patients with different codes in the same department under the same process is compared, 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.

[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 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 for patients when entering typical departments involved in the medical treatment process. Based on the discrete event simulation model, the waiting time for patients to enter key departments in intact and damaged states is determined and compared, and used as the standard for evaluating 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 each typical department.

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

[0023] An embodiment of the present invention provides a post-earthquake function evaluation system for a hospital campus that takes into account the coupling of building functions, including: an acquisition module for acquiring 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 for establishing a discrete event simulation model for treating patients in the hospital campus after the earthquake based on the medical treatment process and the connection; a damage probability determination module for 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 damage probability of the components when encountering an earthquake; a deactivation probability determination module for determining the deactivation probability of the components through the use of the medical departments included in the model. A fault tree model is established for each component, and the probability of disabling a medical department is calculated based on the probability of damage to 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 in each medical department is reduced by the disabling probability of the corresponding 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 based on 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 that takes into account the coupling of building functions provided by an embodiment of the present invention can achieve the same technical effect as the above-mentioned post-earthquake function evaluation method for a hospital campus that takes into account the coupling of building functions. 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 following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0026] Figure 1 A flowchart of a post-earthquake functional evaluation method for a hospital campus that considers building functional coupling, provided by an embodiment of the present invention;

[0027] Figure 2 This is a flowchart of post-earthquake patient medical treatment 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 models of four different medical buildings decomposed in the hospital campus are shown;

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

[0032] Figure 7a 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 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 Schematic diagram comparing the average daily waiting time for red-coded patients and yellow-coded patients to enter the operating room in intact and damaged states according to an embodiment of the present invention;

[0035] Figure 8A schematic structural diagram of a post-earthquake functional evaluation device for a hospital campus that takes building functional coupling into consideration is 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 following detailed description of the specific embodiments of the present invention is given 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 intended to limit the present invention.

[0037] Currently, the closure of relevant medical building departments after earthquakes has slowed the rate of patient care and reduced functional recovery. Different medical buildings within a hospital campus play different roles in post-earthquake patient care. All hospital departments must collaborate to more quickly respond to the challenges posed by earthquake disasters. Therefore, it is necessary to conduct a post-earthquake functional evaluation of existing hospital campuses to determine their seismic resilience and provide data and decision-making support for subsequent hospital campus renovation and design planning. Existing methods primarily evaluate the functionality of emergency departments with critical medical systems, including fault tree methods, system dynamics, and discrete event simulation. However, research on post-earthquake functional evaluation methods for hospital campuses is limited.

[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, based on the fault tree model, the outage probability of each typical department is determined, and the post-earthquake damage of the resources of each department is obtained according to the outage probability, so as to determine the average daily waiting time for patients to enter the departments involved in the corresponding process in the intact state and the earthquake-damaged state. 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 the hospital campus. The following is a detailed introduction to the embodiment of the present invention.

[0039] The present invention provides a post-earthquake function evaluation method for a hospital campus considering the coupling of building functions. Figure 1 The flowchart of the post-earthquake functional evaluation method for a hospital campus considering building functional coupling is shown. 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 aforementioned post-earthquake patient treatment process and the relationships between various hospital buildings are crucial for evaluating the post-earthquake function of hospital campuses. In one implementation, the post-earthquake patient treatment process can be derived based on the hospital visits of patients with different injury conditions. The relationships between various medical buildings within the hospital campus can then be determined based on the departments involved in the post-earthquake patient treatment process. Furthermore, analysis can be conducted based on the actual conditions of the hospital campus being studied.

[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, by sorting out the distribution of departments in different medical buildings and the basic principles of their architectural design, the corresponding department of the medical building that the patient enters when seeking medical treatment is determined, thereby determining the specific functional classification of the hospital campus and decomposing the hospital campus into medical departments in different medical buildings.

[0045] For example, the medical treatment 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 patients whose vital functions are impaired, changed or unstable; yellow-coded patients are patients who are not in direct danger of life but have partially impaired vital functions; green-coded patients are patients who are not in critical condition, not in danger of life, and whose injuries will not affect important functions.

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

[0051] By determining the post-earthquake patient treatment process and the relationships between the various medical buildings within the hospital, the patient's route within the hospital can be determined. This allows for the development of a discrete event simulation model for post-earthquake patient treatment within the hospital. This model reflects the post-earthquake waiting times for patients with different codes entering the relevant departments within the treatment process.

[0052] Specifically, the departments involved for each coded patient are determined based on the medical process of patients with different codes, and the medical 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 post-earthquake patient treatment in the hospital campus is established based on the medical routes.

[0053] In this embodiment, the discrete event simulation model for post-earthquake patient treatment at a hospital corresponds closely to the post-earthquake patient treatment process, encompassing the entire process from admission to departure for differently coded patients. The discrete event simulation model uses the daily number of patients admitted to the hospital for treatment after the earthquake and the number of resources in typical departments as input data. Different processes involve different departments requiring different treatment times. Through literature research and expert consultation, the treatment times for different typical departments were determined, serving as the basis for patient stay time in these departments. This results in a discrete event simulation model for post-earthquake patient treatment at the hospital.

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

[0055] Based on Perform-3D, elastic-plastic analysis models of various medical buildings were established. Elastic-plastic analysis calculations were performed on the elastic-plastic analysis models of each medical building to obtain engineering demand parameters such as inter-story displacement angle and floor acceleration. Based on these 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 was calculated.

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

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

[0058] S108 , establishing a fault tree model using components included in different medical departments, and calculating the outage 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 logical relationships between each component and the typical department. The above components can include structural components, non-structural components, and medical equipment of each typical department.

[0060] Specifically, a fault tree analysis was conducted on the interdependent logical relationships between components and medical functions within each typical department, and a fault tree model corresponding to each typical department was established. Some components within a typical department formed an "or" relationship based on logical dependencies, meaning that damage to at least one component within each department would affect the department's use. Some components within each department formed an "and" relationship based on logical dependencies, meaning that damage to all components within each department would have no impact on 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 an earthquake-damaged state based on the 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 to components in different medical building departments, thereby obtaining the impact of the preset earthquake on the hospital campus.

[0063] The change in available resources for relevant departments after an earthquake is determined by the aforementioned outage probability of typical departments. By determining the outage probability of typical departments and their distribution within medical buildings, the corresponding resources for these departments are directly reduced in quantity. Specifically, 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 outage of the typical department after an earthquake.

[0064] In this embodiment, the available medical resources for typical departments can be reduced based on their post-earthquake functional shutdown probabilities and their distribution within medical buildings. The total number of components corresponding to each department is determined based on the fault tree for each department's functions. These components constitute a department's available resource unit.

[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 aforementioned discrete-event simulation model for post-earthquake patient treatment at the hospital campus, the waiting time for patients entering the corresponding departments in both intact and damaged states was determined. The available resources for each typical department within the hospital campus differed between intact and damaged states. The available resources in the intact state were all available, while those in the damaged state were reduced. The waiting times for patients with different coding levels in the same departments under the same process were compared, correlating the changes in waiting time with the hospital campus's post-earthquake function, completing a post-earthquake functional evaluation of the hospital campus.

[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 in the intact 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 in the earthquake-damaged state.

[0068] The waiting time is the time patients with different codes wait when entering typical departments involved in the medical process, including the emergency room, emergency room, operating room, ICU ward, imaging center, and ward. The discrete event simulation model uses the daily number of patients entering the hospital for treatment and the number of resources in typical departments within the hospital. The output is the waiting time for patients to enter the corresponding departments involved in the process. By classifying and organizing these patient waiting times, the average daily waiting time for patients with different codes entering the corresponding departments is determined.

[0069] The above-mentioned 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. The model is then used to determine 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 the 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 key departments in the intact and damaged states is determined and compared, and this 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 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 various medical buildings in the hospital campus to establish the post-earthquake functional 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 uses arrows 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 functional evaluation of the hospital campus. Figure 3 A schematic diagram of a discrete event simulation model for evaluating the post-earthquake function of a hospital campus, provided by an embodiment of the present invention, is shown. This model is based on the hospital's departmental distribution and patient consultation processes. Therefore, the discrete event simulation model reflects the situation where a patient's floor changes when transitioning from one process to the next.

[0074] A hospital campus is a complex system consisting of multiple medical buildings. The departments located in different medical buildings also vary according to their functions. In this example, the post-earthquake functional impact of the hospital campus is decomposed into the damage probability of components in different departments within 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 for obtaining an elastic-plastic analysis model of each medical building, performing an elastic-plastic time-history analysis 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 within the hospital campus are shown. An elastic-plastic time-history analysis is performed on the elastic-plastic analysis models to obtain the engineering demand parameters of each medical building structure. These engineering demand parameters include inter-story displacement angles and floor accelerations. The damage probability of each component under a preset earthquake scenario is determined based on its vulnerability information, engineering demand parameters, and seismic fragility model.

[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 disabling of the typical department after the earthquake.

[0078] According to the relationship between the damage conditions of all components contained in a typical department and the various systems of the typical department (such as the structural system, enclosure system, HVAC system, power supply system, water supply system, drug supply system, transportation system and professional equipment system), as well as the relationship between the various systems of the typical department and the medical functions of the typical department, the causal relationship between the damage conditions of all components contained in the typical department and the medical functions of the typical department can be obtained, thereby establishing a fault tree model of the 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 structural systems, maintenance systems, HVAC systems, power supply systems, and water supply systems, which have an "or" relationship with the basic functions. The system functions include drug supply systems, transport systems, and professional equipment systems, 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 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 item 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 cardiac defibrillator failure; E20 indicates monitor failure; E21 indicates ventilator failure; E22 indicates gastric lavage machine failure; E23 indicates cardiac pacemaker failure; and E24 indicates electrocardiograph failure.

[0080] Earthquake damage events from various components form the fundamental events in the fault tree. The probability of occurrence of these fundamental events (i.e., earthquake damage probability) can be used to calculate the probability of occurrence of the top-level event, i.e., the post-earthquake functional disability probability of the typical department, through the logic of the fault tree. For example, in the above case, the post-earthquake functional disability 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 for each medical department is based on the distribution of departments in each medical building within a hospital campus and the changes in available resources in relevant departments after an 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 statistics of the patient access 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. For example, based on statistics of the distribution of departments in each medical building, the number of resources for each medical department is 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, where 1 unit of resource refers to all components included in the system functions in the established fault tree model for each medical department. Based on the outage probability of each medical department determined by the typical department functional logic fault tree model in the above embodiment, the change in available resources in each 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%. At the same time, the number of available unit resources in the emergency room is 9. A direct physical calculation of the available unit resources in the emergency room is: 9 x 6.55% = 0.5895 ≈ 1, so the number of available unit resources in the emergency room after the earthquake is 8. This method can also be used to determine the change in the number of available resources in other relevant departments after the earthquake. Among them, the imaging center has 12 units of resources, the operating room has 17 units of resources, the ICU has 29 units of resources, the CCU has 20 units of resources, and the general ward has 814 units of resources.

[0082] In one embodiment, a specific implementation method for determining and comparing the waiting times for patients entering departments involved in corresponding processes under intact and damaged conditions based on a discrete event simulation model for evaluating the post-earthquake function of a hospital campus is as follows: the number of patients entering the hospital campus for treatment daily and the unit resource counts of departments distributed across each medical building are input into the discrete event simulation model for evaluating the post-earthquake function of the hospital campus. The waiting times for each patient entering the relevant departments of the process are then calculated using the characteristics of the discrete event simulation model. The waiting times for patients with different codes are then statistically analyzed and categorized to calculate the average daily waiting time for patients with different codes entering different departments. This average daily waiting time is the waiting time for patients under intact conditions. The unit resource counts of departments distributed across each medical building are adjusted to the available resources of the relevant departments after the earthquake, and the above steps are repeated. The average daily waiting time for patients with different codes entering different departments is then calculated based on the above steps. The average daily waiting time for patients with the same code entering the same department under intact and damaged conditions is then compared, and the changes in waiting time are observed to complete the post-earthquake function evaluation of the hospital campus.

[0083] like Figures 7a-7c The following figure shows 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 process involving the department. The solid line in the figure represents the average daily waiting time when the patient enters the process involving the department in the intact state, and the dotted line in the figure represents the average daily waiting time when the patient enters the process involving the department after the earthquake. Figure 7a A comparative diagram shows the average daily waiting time for red-coded patients entering 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 diagram shows a comparison of the average daily waiting time for yellow-coded patients entering 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 7cA schematic diagram comparing the average daily waiting time for red-coded patients and yellow-coded patients entering the operating room in intact and damaged states is shown. The waiting time is all below 10 minutes, and there is no difference in waiting time between intact and damaged states. It can be seen that there will be no patient congestion in the operating room.

[0084] The post-earthquake medical function evaluation method for the hospital campus provided in 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 of patients when entering the departments involved in the corresponding process as the evaluation basis to intuitively display the evaluation results. Through vulnerability analysis and fault tree models, the resource changes of typical departments are determined, and the post-earthquake function evaluation of the hospital campus is decomposed into the determination of post-earthquake damage to components in typical departments. This 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 following is a schematic diagram of a post-earthquake functional evaluation device for a hospital campus that considers building functional coupling, provided by an embodiment of the present invention. 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 campus;

[0087] A model building module 802 is used to build a discrete event simulation model for treating patients in a hospital area after an earthquake based on the medical treatment process and the relationship;

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

[0089] The outage probability determination module 804 is configured to establish a fault tree model using 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] Determination module 805 is configured 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 amount of available medical resources in each medical department by the outage probability of the corresponding 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 based on the changes in the waiting time for patients to enter typical departments in the intact state and the damaged state.

[0092] The apparatus for evaluating the post-earthquake function of a hospital district, which takes into account the coupling of building functions, provided in an embodiment of the present invention, establishes a discrete event simulation model for evaluating the post-earthquake function of the hospital district by obtaining the post-earthquake patient treatment process and the distribution of departments in each building in the hospital district. By establishing elastic-plastic analysis models of different medical buildings and functional fault tree models of typical departments, the damage probability of typical departments under a preset earthquake scenario is determined, thereby determining the change in the number of available resource units in the typical departments. The change in waiting time for patients entering the departments involved in the process under intact and damaged conditions is then obtained, completing the post-earthquake function evaluation of the hospital district. The evaluation method is simple and provides important reference information for the planning and design of hospital districts.

[0093] The above-mentioned hospital campus post-earthquake function evaluation system considering the coupling of building functions provided by the embodiment of the present invention has the same implementation principle and technical effects as the aforementioned embodiments. For the sake of brief description, for matters not mentioned in the system embodiment, please refer to the corresponding content 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 will understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing a 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 document, 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 "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[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 is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily 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 is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A post-earthquake functional evaluation method for a hospital campus considering building functional coupling, characterized by: 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; A discrete event simulation model for treating patients in a hospital campus after the earthquake is established based on the medical treatment process and the connections; wherein the discrete event simulation model is used to output the waiting time for patients to enter a typical department based on the number of patients entering the hospital campus for treatment every day after the earthquake and the number of resources in a typical department; 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 using components included in different medical departments, and calculating the outage probability of the medical department based on the damage probability of the components when encountering an earthquake and the fault tree model; Calculating the waiting time for patients entering a typical department in an intact state based on the discrete event simulation model; and reducing the number of available medical resources in each medical department by the outage probability of the corresponding department, and calculating the waiting time for patients entering a typical department in a damaged state based on the discrete event simulation model; The post-earthquake function of the hospital campus was evaluated based on the changes in the waiting time for patients to enter typical departments under the intact state and the earthquake-damaged state.

2. The method according to claim 1, characterized in that The process of obtaining medical treatment for patients with different injury levels after the earthquake and the connection between 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 on the hospital campus and their basic architectural design principles, the patient's route when entering the department involved in the medical process is determined, and the connection between the medical functions of the various medical buildings on the hospital campus is obtained; wherein the basic architectural design principles refer to the distribution of the various medical buildings on 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 an emergency 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, are not in danger of life, and whose injuries will not affect their vital functions.

5. The method according to claim 4, characterized in that The discrete event simulation model for treating patients in a hospital after an earthquake is established based on the medical treatment process and the connection, including: Determine the department involved for each coded patient based on the medical process of each coded patient, and determine the medical 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 reduction of the available medical resources of each medical department according to the deactivation probability of the corresponding 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 disabling of the typical department after an earthquake; Based on the post-earthquake functional shutdown probability of the typical departments and the distribution of the typical departments in medical buildings, the available medical resources corresponding to the typical departments are reduced in quantity.

7. The method according to claim 1, characterized in that The step 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 campus for treatment each day and the 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 when the patient enters the typical department under the lossless state; The number of patients entering the hospital campus for treatment every day after the earthquake and the reduced number of resources in 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 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 the typical departments involved in the medical treatment process, where 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: Based on the department attributes of each component, the components included in each typical department are determined, 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 by: 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 establishing a discrete event simulation model for treating patients in a hospital campus after the earthquake based on the medical treatment process and the connections; wherein the discrete event simulation model is used to output the waiting time for patients to enter a typical department based on the number of patients entering the hospital campus for treatment every day after the earthquake and the number of resources in a typical department; a damage probability determination module, configured 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 components when encountering an earthquake; A shutdown probability determination module is configured to establish a fault tree model using 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, configured to calculate, based on the discrete event simulation model, a waiting time for a patient entering a typical department in an intact state; and, based on the discrete event simulation model, to reduce the amount of available medical resources in each medical department by the outage probability of the corresponding department, and calculate, based on the discrete event simulation model, a waiting time for a patient entering a typical department in a damaged state; An evaluation module is used to evaluate the post-earthquake function of the hospital campus based on changes in waiting time for patients to enter typical departments in the intact state and the earthquake-damaged state.

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