Method and system for optimizing anti-knock performance of shelter

Abstract

The invention discloses a method and system for optimizing anti-explosion performance of a shelter. The method comprises the following steps that shelter characteristic parameters meeting anti-explosion requirements are configured for an area to be subjected to anti-explosion, and an initial shelter model is constructed; carrying out anti-explosion simulation by utilizing the initial shelter model to obtain dynamic stress characteristics on the initial shelter model in an anti-explosion process so as to determine an easily-damaged position; local structure strengthening is conducted on the initial shelter model according to the easily-damaged position, whether the easily-damaged position exists on the strengthened shelter model or not is judged, if not, the current strengthened shelter model serves as the optimal shelter design scheme, or if yes, the current strengthened shelter model serves as the optimal shelter design scheme. And secondary structure strengthening is carried out on the easily-damaged position on the current strengthened shelter model until the strengthened shelter model without the easily-damaged position is obtained. The anti-knock performance of the whole shelter is effectively improved.

Description

Technical Field

[0001] The invention belongs to the field of safe and scientific explosion protection in the petrochemical industry, and in particular relates to a method and a system for optimizing the explosion-proof performance of a shelter. Background Art

[0002] Personnel and equipment in working environments with the possibility of explosion, such as chemical parks, are at potential risk of being impacted by explosions. If effective anti-explosion protection measures are not taken, irreparable personal injury and property losses may occur. At present, the anti-explosion protection measures used for safety protection are usually to set up shelters, which create a safe local space for personnel and equipment at risk to isolate the explosion site and resist damage caused by external explosions.

[0003] In the process of realizing the present invention, the inventors found that the existing shelter technologies and methods are mostly a combination of frame beams and explosion-proof walls, with multiple system units built in, such as security isolation system, security monitoring system, life support system and help call system, etc., without scientific and reasonable analysis of the shelter design. During the design, the beam and column size selection and spacing arrangement are only based on the explosion shock wave and duration. However, due to the lack of mechanical analysis of the shelter as a whole, the shelter design tends to be conservative. At the same time, the problem of local stress concentration is also ignored. The final shelter entity has the same strength everywhere, resulting in the actual shelter showing the phenomenon of "overall too strong and local too weak".

[0004] The prior art provides a shelter that can achieve multi-level protection. The shelter can make corresponding use adjustments through the environmental information obtained by the security monitoring system to form a corresponding shelter effect according to the needs of the user and save the use cost. The shelter maximizes the life support time of the user, improves the user's human body feeling, and expands the application scope of the shelter, but does not involve the overall mechanical analysis of the shelter.

[0005] The prior art also provides a gas explosion impact resistant building structure, wherein a plurality of alternately arranged reinforced steel columns are fixed on a building foundation, and a building wall panel is fixed between two adjacent reinforced steel columns, the plurality of reinforced steel columns and the plurality of building wall panels form a building side facade, and a building roof panel is fixed on the top of the building side facade. In order to improve the structural strength and explosion resistance of the building, the building wall panels are made of a reinforcement layer and an explosion-proof layer stacked between two steel structure corrugated plates, and the building roof panel is made of an explosion-proof layer arranged between two steel structure corrugated plates. The reinforced steel columns fixed on the building foundation strengthen the skeleton structure of the gas explosion impact resistant building structure, and the stacked building wall panels and building roof panels improve the structural strength of the building, solving the problems of low building structure strength, easy overturning, and weak explosion resistance in the prior art, but the overall mechanical analysis of the shelter is also not involved.

[0006] The prior art also provides a mobile explosion-proof shelter with explosion-proof, earthquake-proof, high-speed object impact-resistant, fire-proof, heat-insulating, poison-proof, poison-filtering, oxygen-supplying, and anti-theft functions. It can not only meet the safety needs of land industrial explosions, underground mine dust and gas explosions, offshore oil facility explosions and terrorist attacks, but is also movable, reusable, and low in manufacturing cost. It does not involve the overall mechanical analysis of the shelter.

[0007] In addition, the prior art also provides an explosion-proof building, which uses a light steel structure to cover the outside of an existing building, and uses the explosion-proof structural system to resist external explosion impact loads to avoid damage to existing buildings. It mainly aims at the problem that the original structure itself is not suitable for reinforcement and transformation, the transformation cost is high, or the transformation plan is difficult to implement due to construction conditions in the explosion-proof reinforcement and transformation project of existing buildings, and solves the problem of transformation of existing buildings. This explosion-proof building expands the scope of application of explosion-proof reinforcement and transformation projects of existing buildings, and has great technical and economic significance for explosion-proof structural projects. The overall design of the explosion-proof building is the same as the design of the steel structure building. When analyzing the bearing capacity under explosion conditions, it is mainly based on the relevant standards of the current explosion-proof structure design. At this time, the light-structure explosion-proof building mainly bears the explosion loads of the surrounding walls and roof. Through the overall design, the layout and cross-sectional model of each structural component of the explosion-proof skeleton are determined. The maximum spacing between components in the explosion-proof frame is determined by the specifications of the explosion-proof panels to ensure effective connection between the explosion-proof panels and the explosion-proof frame. If the calculated cross-section of each component in the explosion-proof frame is too large, the components can be denser, but this does not involve reducing the materials used to build the shelter to reduce costs.

[0008] In practical applications, firstly, when an explosion occurs, the mid-span displacement of the shelter is large and the stress at the end is concentrated. However, when designing the shelter, the cross-sectional dimensions of the columns, transverse and longitudinal beams at the mid-span and end of the structure are the same. Therefore, the shelter can be strengthened locally in a targeted manner by increasing the local dimensions of the mid-span structure, improving the bending resistance, increasing the end constraints, reducing the support angle, and optimizing the stress concentration phenomenon. Secondly, the shelters designed in the preliminary design usually have the characteristics of excess explosion resistance of some structures. Building the actual shelter according to the current design plan will cause a lot of material waste and increase the cost of protective production. Therefore, the initial design plan should be reasonably optimized.

[0009] In summary, shelters are the main measure for explosion impact protection in existing chemical parks. However, most existing technologies realize the design of shelters based on the functions of the whole or unit modules, while there are few studies on the overall mechanical characteristics of the designed shelters. In addition, the design process is templated and not sophisticated enough. Therefore, it is necessary to further explore and improve the local structural reinforcement and overall optimization of the shelter in the design scheme. Summary of the invention

[0010] In order to solve the above problems, an embodiment of the present invention provides a method for optimizing the explosion-proof performance of a shelter, comprising: configuring characteristic parameters of the shelter that meet the explosion-proof requirements for the area to be explosion-proof and constructing an initial shelter model; using the initial shelter model to perform explosion-proof simulation to obtain dynamic stress characteristics on the initial shelter model during the explosion-proof process, thereby determining vulnerable positions; performing local structural reinforcement on the initial shelter model for the vulnerable positions, and determining whether there are vulnerable positions on the reinforced shelter model, wherein if there are no vulnerable positions, the current reinforced shelter model is used as the optimal shelter design scheme, or if there are vulnerable positions, secondary structural reinforcement is performed on the vulnerable positions on the current reinforced shelter model until a reinforced shelter model without vulnerable positions is obtained.

[0011] Preferably, after obtaining the optimal shelter design solution, the method further comprises: performing material reduction processing on the current optimal shelter design solution, so as to obtain a first shelter model using the least construction materials in the actual explosion-proof area, and using the first shelter model to update the current optimal shelter design solution.

[0012] Preferably, the material reduction processing methods include but are not limited to: reducing the steel density in the area with excess explosion-proof performance, increasing the distance between beams and columns, reducing the size of beams and columns, reducing the thickness of beams and columns, and reducing the thickness of explosion-proof wall panels.

[0013] Preferably, the method further comprises: performing material reduction verification processing on the first shelter model, including: determining whether the first shelter model reaches the material reduction limit based on technical indicators for evaluating the material reduction degree of the shelter design scheme, and when the material reduction limit is reached, determining whether there are no easily destructible positions on the first shelter model, and if so, re-structuring the first shelter model, performing material reduction processing and material reduction degree evaluation until a second shelter model without easily destructible positions and reaching the material reduction limit is obtained, so as to update the current best shelter model using the second shelter model; or, when the material reduction limit is not reached, re-performing material reduction processing on the first shelter model to obtain a corresponding shelter model without easily destructible positions and reaching the material reduction limit, so as to update the current best shelter model using the current shelter model.

[0014] Preferably, technical indicators regarding the degree of material reduction include but are not limited to maximum deflection and maximum rotation angle.

[0015] Preferably, the methods of local structural strengthening include but are not limited to adding angle steel, increasing local material size and increasing local material thickness.

[0016] Preferably, the additional material used to increase the local material size and the local material thickness is the same as or stronger than the shelter construction material.

[0017] Preferably, the structure constituting the initial shelter model includes but is not limited to: frame columns, columns, surrounding cross beams, top plate cross beams, top plate longitudinal beams and explosion-proof panels, wherein the frame columns are square steels with a hollow interior; the columns, the surrounding cross beams, the top plate cross beams and the top plate longitudinal beams are respectively rectangular steels with a hollow interior; and the explosion-proof panels cover the outer surface of the shelter.

[0018] Preferably, in the step of configuring characteristic parameters of a shelter that meets explosion-proof requirements for the area to be explosion-proof and constructing an initial shelter model, it includes: obtaining the characteristic parameters of the shelter based on the size of the area to be explosion-proof and the incident overpressure and duration of the explosion shock wave that the shelter needs to resist in the area to be explosion-proof, thereby constructing the initial shelter model using the characteristic parameters of the shelter.

[0019] Preferably, the characteristic parameters of the shelter include dimensional parameters and mechanical parameters, wherein the dimensional parameters include but are not limited to: the overall size of the shelter, the wall thickness and size of the frame columns, the wall thickness and size of the beams and columns, the wall thickness and spacing of the columns, the wall thickness and spacing of the surrounding beams, the wall thickness and spacing of the top plate beams and the wall thickness and spacing of the top plate longitudinal beams; and the mechanical parameters include but are not limited to: the material property parameters of the shelter, component contact parameters, boundary condition parameters and load application parameters.

[0020] Preferably, the vulnerable positions include but are not limited to: stress concentration positions and maximum displacement deformation positions, wherein the stress concentration positions are located at the ends of the explosion-facing surface columns, wherein the columns include but are not limited to frame columns, beams, columns, surrounding beams, top plate beams and top plate longitudinal beams; and the maximum displacement deformation position is located at the center of the explosion-facing surface column.

[0021] On the other hand, the present invention also provides a system for optimizing the explosion-proof performance of a shelter, the system comprising the following modules: a model building module, which is used to configure shelter characteristic parameters that meet the explosion-proof requirements for the area to be explosion-proof and construct an initial shelter model; an explosion-proof simulation module, which is used to use the initial shelter model to perform explosion-proof simulation, obtain the dynamic stress characteristics on the initial shelter model during the explosion-proof process, and thus determine the vulnerable positions; a design scheme generation module, which is used to perform local structural reinforcement of the initial shelter model for the vulnerable positions, and determine whether there are vulnerable positions on the reinforced shelter model, wherein, if there are no vulnerable positions, the current reinforced shelter model is used as the optimal shelter design scheme, or if there are vulnerable positions, the vulnerable positions on the current reinforced shelter model are subjected to secondary structural reinforcement until a reinforced shelter model without vulnerable positions is obtained.

[0022] Compared with the prior art, one or more embodiments of the above scheme may have the following advantages or beneficial effects:

[0023] The present invention proposes a method and system for optimizing the explosion resistance of a shelter. The method is based on analytical mechanics and wide-area impact dynamics simulation that can accurately describe the deformation and fragmentation of structures during explosion impacts, and couples them to obtain a shelter design scheme without vulnerable locations. The method first uses wide-area impact dynamics simulation to model the entire shelter and performs explosion resistance simulation on the constructed model to obtain the stress distribution of the overall structure of the shelter. Then, analytical mechanics is used to analyze the vulnerable locations of the shelter, namely, stress concentration locations and maximum deformation locations. Finally, local reinforcement is performed on vulnerable locations until a reinforced shelter model without vulnerable locations is obtained. In addition, the present invention also performs overall material reduction on the reinforced shelter model that does not currently have vulnerable positions, and verifies whether the model after material reduction has vulnerable positions. If so, the vulnerable positions are structurally strengthened. If not, the current reinforced shelter model is used as the best shelter design. Or, if so, the vulnerable positions on the current reinforced shelter model are structurally strengthened twice until a reinforced shelter model without vulnerable positions is obtained, and then the overall material reduction is performed on the model, and it is verified whether the model after material reduction has vulnerable positions. If so, the vulnerable positions are structurally strengthened. If not, the current reinforced shelter model is used as the best shelter design. The present invention effectively improves the explosion impact resistance of vulnerable positions, avoids overall destruction of the shelter due to local stress concentration, and improves the overall explosion resistance of the shelter. In addition, while effectively improving the explosion resistance of the shelter, the present invention also performs material reduction processing on the areas with excess explosion resistance in the shelter, effectively reducing the overall material usage of the shelter, thereby reducing the production cost of the shelter.

[0024] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 It is a step diagram of a method for optimizing explosion-proof performance of a shelter according to an embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the overall structure of an initial shelter model of the method for optimizing the explosion-resistant performance of a shelter according to an embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the skeleton structure of an initial shelter model of the method for optimizing the explosion-resistant performance of a shelter according to an embodiment of the present application.

[0029] Figure 4 It is a schematic cloud diagram of the displacement of a shelter before local structural reinforcement of the method for optimizing the explosion-resistant performance of a shelter in an embodiment of the present application.

[0030] Figure 5 It is a schematic diagram of a method for adding angle steels in a method for optimizing explosion-proof performance of a shelter according to an embodiment of the present application.

[0031] Figure 6 It is a displacement diagram of adding 240mm angle steel in the method for optimizing the explosion-proof performance of a shelter according to an embodiment of the present application.

[0032] Figure 7 It is a displacement diagram of adding 300 mm angle steel in the method for optimizing the explosion-proof performance of a shelter according to an embodiment of the present application.

[0033] Figure 8 It is a displacement diagram of adding 400 mm angle steel in the method for optimizing the explosion-proof performance of a shelter according to an embodiment of the present application.

[0034] Fig. 9 It is a schematic diagram of the overall structure of a shelter model after material reduction in a method for optimizing explosion-resistant performance of a shelter according to an embodiment of the present application.

[0035] Fig.10 It is a schematic diagram of the skeleton structure of a shelter model after material reduction in the method for optimizing the explosion-resistant performance of a shelter according to an embodiment of the present application.

[0036] Fig.11 It is a displacement diagram of a shelter model after material reduction in a method for optimizing explosion-resistant performance of a shelter according to an embodiment of the present application.

[0037] Fig.12 It is a module block diagram of a system for optimizing explosion-proof performance of a shelter according to an embodiment of the present application. DETAILED DESCRIPTION

[0038] The following will describe the implementation methods of the present invention in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. It should be noted that as long as there is no conflict, the various embodiments of the present invention and the various features in the embodiments can be combined with each other, and the technical solutions formed are all within the protection scope of the present invention.

[0039] In addition, the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be performed in an order different from that shown here.

[0040] Personnel and equipment in working environments with the possibility of explosion, such as chemical parks, are at potential risk of being impacted by explosions. If effective anti-explosion protection measures are not taken, irreparable personal injury and property losses may occur. At present, the anti-explosion protection measures used for safety protection are usually to set up shelters, which create a safe local space for personnel and equipment at risk to isolate the explosion site and resist damage caused by external explosions.

[0041] In the process of realizing the present invention, the inventors found that the existing shelter technologies and methods are mostly a combination of frame beams and explosion-proof walls, with multiple system units built in, such as security isolation system, security monitoring system, life support system and help call system, etc., without scientific and reasonable analysis of the shelter design. During the design, the beam and column size selection and spacing arrangement are only based on the explosion shock wave and duration. However, due to the lack of mechanical analysis of the shelter as a whole, the shelter design tends to be conservative. At the same time, the problem of local stress concentration is also ignored. The final shelter entity has the same strength everywhere, resulting in the actual shelter showing the phenomenon of "overall too strong and local too weak".

[0042] The prior art provides a shelter that can achieve multi-level protection. The shelter can make corresponding use adjustments through the environmental information obtained by the security monitoring system to form a corresponding shelter effect according to the needs of the user and save the use cost. The shelter maximizes the life support time of the user, improves the user's human body feeling, and expands the application scope of the shelter, but does not involve the overall mechanical analysis of the shelter.

[0043] The prior art also provides a gas explosion impact resistant building structure, wherein a plurality of alternately arranged reinforced steel columns are fixed on a building foundation, and a building wall panel is fixed between two adjacent reinforced steel columns, the plurality of reinforced steel columns and the plurality of building wall panels form a building side facade, and a building roof panel is fixed on the top of the building side facade. In order to improve the structural strength and explosion resistance of the building, the building wall panels are made of a reinforcement layer and an explosion-proof layer stacked between two steel structure corrugated plates, and the building roof panel is made of an explosion-proof layer arranged between two steel structure corrugated plates. The reinforced steel columns fixed on the building foundation strengthen the skeleton structure of the gas explosion impact resistant building structure, and the stacked building wall panels and building roof panels improve the structural strength of the building, solving the problems of low building structure strength, easy overturning, and weak explosion resistance in the prior art, but the overall mechanical analysis of the shelter is also not involved.

[0044] The prior art also provides a mobile explosion-proof shelter with explosion-proof, earthquake-proof, high-speed object impact-resistant, fire-proof, heat-insulating, poison-proof, poison-filtering, oxygen-supplying, and anti-theft functions. It can not only meet the safety needs of land industrial explosions, underground mine dust and gas explosions, offshore oil facility explosions and terrorist attacks, but is also movable, reusable, and low in manufacturing cost. It does not involve the overall mechanical analysis of the shelter.

[0045] In addition, the prior art also provides an explosion-proof building, which uses a light steel structure to cover the outside of an existing building, and uses the explosion-proof structural system to resist external explosion impact loads to avoid damage to existing buildings. It mainly aims at the problem that the original structure itself is not suitable for reinforcement and transformation, the transformation cost is high, or the transformation plan is difficult to implement due to construction conditions in the explosion-proof reinforcement and transformation project of existing buildings, and solves the problem of transformation of existing buildings. This explosion-proof building expands the scope of application of explosion-proof reinforcement and transformation projects of existing buildings, and has great technical and economic significance for explosion-proof structural projects. The overall design of the explosion-proof building is the same as the design of the steel structure building. When analyzing the bearing capacity under explosion conditions, it is mainly based on the relevant standards of the current explosion-proof structure design. At this time, the light-structure explosion-proof building mainly bears the explosion loads of the surrounding walls and roof. Through the overall design, the layout and cross-sectional model of each structural component of the explosion-proof skeleton are determined. The maximum spacing between components in the explosion-proof frame is determined by the specifications of the explosion-proof panels to ensure effective connection between the explosion-proof panels and the explosion-proof frame. If the calculated cross-section of each component in the explosion-proof frame is too large, the components can be denser, but this does not involve reducing the materials used to build the shelter to reduce costs.

[0046] In practical applications, firstly, when an explosion occurs, the mid-span displacement of the shelter is large and the stress at the end is concentrated. However, when designing the shelter, the cross-sectional dimensions of the columns, transverse and longitudinal beams at the mid-span and end of the structure are the same. Therefore, the shelter can be strengthened locally in a targeted manner by increasing the local dimensions of the mid-span structure, improving the bending resistance, increasing the end constraints, reducing the support angle, and optimizing the stress concentration phenomenon. Secondly, the shelters designed in the preliminary design usually have the characteristics of excess explosion resistance of some structures. Building the actual shelter according to the current design plan will cause a lot of material waste and increase the cost of protective production. Therefore, the initial design plan should be reasonably optimized.

[0047] In summary, shelters are the main measure for explosion impact protection in existing chemical parks. However, most existing technologies realize the design of shelters based on the functions of the whole or unit modules, while there are few studies on the overall mechanical characteristics of the designed shelters. In addition, the design process is templated and not sophisticated enough. Therefore, it is necessary to further explore and improve the local structural reinforcement and overall optimization of the shelter in the design scheme.

[0048] Therefore, in order to solve the above problems, the present invention proposes a method and system for optimizing the explosion resistance of shelters. The method is based on analytical mechanics and wide-area impact dynamics simulation that can accurately describe the deformation and fragmentation of structures during explosion impacts, and couples them to obtain a shelter design scheme without vulnerable locations. The method first uses wide-area impact dynamics simulation to model the entire shelter and performs explosion resistance simulation on the constructed model to obtain the stress distribution of the overall structure of the shelter. Then, analytical mechanics is used to analyze the vulnerable locations of the shelter, namely, stress concentration locations and maximum deformation locations. Finally, local reinforcement is performed on vulnerable locations until a reinforced shelter model without vulnerable locations is obtained. In addition, the present invention also performs overall material reduction on the reinforced shelter model that does not currently have vulnerable positions, and verifies whether the model after material reduction has vulnerable positions. If so, the vulnerable positions are structurally strengthened. If not, the current reinforced shelter model is used as the best shelter design. Or, if so, the vulnerable positions on the current reinforced shelter model are structurally strengthened twice until a reinforced shelter model without vulnerable positions is obtained, and then the overall material reduction is performed on the model, and it is verified whether the model after material reduction has vulnerable positions. If so, the vulnerable positions are structurally strengthened. If not, the current reinforced shelter model is used as the best shelter design. The present invention effectively improves the explosion impact resistance of vulnerable positions, avoids overall destruction of the shelter due to local stress concentration, and improves the overall explosion resistance of the shelter. In addition, while effectively improving the explosion resistance of the shelter, the present invention also performs material reduction processing on the areas with excess explosion resistance in the shelter, effectively reducing the overall material usage of the shelter, thereby reducing the production cost of the shelter.

[0049] Embodiment 1

[0050] Figure 1 is a step diagram of a method for optimizing explosion resistance of a shelter according to an embodiment of the present application. Figure 1 To illustrate the various steps of this method.

[0051] like Figure 1 As shown, in step S110, characteristic parameters of the shelter that meet the explosion-proof requirements are configured for the explosion-proof area and an initial shelter model is constructed. In the embodiment of the present application, the explosion-proof requirements of the explosion-proof area are first determined, and then the characteristic parameters of the shelter are configured for the explosion-proof area according to the explosion-proof requirements, and the preliminary design of the shelter suitable for the current explosion-proof area is completed, that is, the initial shelter model is obtained. In other words, the constructed initial shelter model has the ability to simulate the corresponding physical shelter to withstand the explosion impact in the current explosion-proof area.

[0052] In a specific embodiment of the present application, a petrochemical explosion simulation system (DYNA-RISE) is used as the main design tool to construct an initial shelter model and optimize it (for example: local structure strengthening simulation, material reduction processing). The petrochemical explosion simulation system has the ability to simulate ultra-large shelters with a length of more than 50 meters, and to calculate shelter models with a grid number of no less than 8 million.

[0053] In the step of configuring the characteristic parameters of the shelter that meets the explosion-proof requirements for the explosion-proof area and constructing the initial shelter model, the characteristic parameters of the shelter are obtained according to the size of the explosion-proof area, and the incident overpressure and duration of the explosion shock wave that the shelter needs to resist in the explosion-proof area, so as to construct the initial shelter model using the characteristic parameters of the shelter. In order to ensure that the constructed shelter model has the explosion-proof ability suitable for explosion-proofing in the explosion-proof area, the shelter model needs to have a size sufficient to shield the explosion-proof area, and also needs to have the ability to withstand the explosion shock, and the ability of the shelter model to withstand the explosion shock is related to the incident overpressure and duration of the explosion shock wave that the shelter actually needs to resist in the explosion-proof area. Accordingly, the present invention obtains the characteristic parameters of the shelter according to the size of the explosion-proof area, and the incident overpressure and duration of the explosion shock wave that the shelter needs to resist in the explosion-proof area. The construction of the initial shelter model with the ability to resist the explosion shock in the explosion-proof area is realized by using the characteristic parameters of the shelter.

[0054] In the embodiment of the present application, the characteristic parameters of the shelter include size parameters and mechanical parameters, wherein the size parameters include but are not limited to: the overall size of the shelter, the wall thickness and size of the frame columns, the wall thickness and size of the beams and columns, the wall thickness and spacing of the columns, the wall thickness and spacing of the surrounding beams, the wall thickness and spacing of the top plate beams, and the wall thickness and spacing of the top plate longitudinal beams; and the mechanical parameters include but are not limited to: the material property parameters of the shelter, the component contact parameters, the boundary condition parameters, and the load application parameters. Specifically, the design of the overall size of the shelter in the size parameters is used to meet the requirement that the shelter model needs to have a size sufficient to shield the area to be explosion-proof; the design of the overall size of the shelter, the wall thickness and size of the frame columns, the wall thickness and size of the beams and columns, the wall thickness and spacing of the columns, the wall thickness and spacing of the surrounding beams, the wall thickness and spacing of the top plate beams, and the wall thickness and spacing of the top plate longitudinal beams, as well as the mechanical parameters, is used to meet the requirement that the shelter model needs to have the ability to withstand the impact of an explosion.

[0055] Since the structure of the initial shelter model needs to match the actual shelter to be built in the explosion-proof area, the structure of the initial shelter model includes but is not limited to: frame columns, columns, surrounding beams, top plate beams, top plate longitudinal beams and explosion-proof panels, wherein the frame columns are square steel with a hollow interior; the columns, surrounding beams, top plate beams and top plate longitudinal beams are rectangular steel with a hollow interior; and the explosion-proof panels cover the outer surface of the shelter.

[0056] In a specific embodiment of the present application, based on the aforementioned petrochemical explosion simulation system, in combination with the computer language it supports, secondary development is carried out to write a plug-in or script for building an initial shelter model. At this time, it is only necessary to directly input the currently configured shelter characteristic parameters into the aforementioned petrochemical explosion simulation system to carry out modeling, thereby obtaining the corresponding shelter model (for example: initial shelter model, enhanced shelter model described below, first shelter model, second shelter model, etc.).

[0057] Further, in step S120, the initial shelter model is used to perform explosion-proof simulation to obtain the dynamic stress characteristics on the initial shelter model during the explosion-proof process, thereby determining the vulnerable position. After the initial shelter model is constructed, the initial shelter model is used to perform explosion-proof simulation, and an analytical mechanical analysis is performed on the entire explosion-proof process of the current initial shelter model to obtain the dynamic stress characteristics on the initial shelter model during the explosion-proof process, thereby determining the vulnerable position. Accordingly, the present invention adopts a petrochemical explosion simulation system equipped with a mature modeling method, explosion load simulation, and model verification functions to obtain accurate explosion-proof simulation data, and based on the current explosion-proof simulation data, an effective analysis of the stress distribution of the shelter after being affected by the explosion shock wave is achieved, and an accurate vulnerable position is obtained.

[0058] In a specific embodiment of the present application, the vulnerable position includes but is not limited to: a stress concentration position and a maximum displacement deformation position, wherein the stress concentration position is located at the end of the explosion-facing column, wherein the column includes but is not limited to frame columns, beams, columns, surrounding beams, top plate beams and top plate longitudinal beams; and the maximum displacement deformation position is located at the center of the explosion-facing column. In practical applications, the vulnerable positions on the shelter are usually the stress concentration points at the ends of the column and the points with large deformation in the upper span of the column. Therefore, the present invention determines the stress concentration positions and the maximum displacement deformation positions on the shelter model as vulnerable positions, realizes the accurate acquisition of vulnerable positions, and then can carry out targeted local reinforcement of vulnerable positions, effectively improve the explosion impact resistance of the position, avoid the overall destruction of the shelter designed for actual explosion-resistant areas due to local stress concentration, and improve the overall explosion resistance of the shelter.

[0059] Further, in step S130, the initial shelter model is locally structurally strengthened for vulnerable positions, and it is determined whether there are vulnerable positions on the strengthened shelter model, wherein, if there are no vulnerable positions, the current strengthened shelter model is used as the optimal shelter design scheme, or if there are vulnerable positions, the vulnerable positions on the current strengthened shelter model are secondary structurally strengthened until a strengthened shelter model without vulnerable positions is obtained. After determining the vulnerable positions on the initial shelter model, the embodiment performs local structural strengthening on the initial shelter model for the current vulnerable positions, and adjusts and models the vulnerable positions based on the initial shelter model, and reuses the size of the area to be blast-proofed, and the incident overpressure and duration of the explosion shock wave that the shelter needs to resist in the area to be blast-proofed, to obtain the characteristic parameters of the strengthened shelter, and thus construct the strengthened shelter model using the characteristic parameters of the strengthened shelter. Afterwards, the vulnerable positions of the current strengthened shelter model are obtained in a similar analysis method to that of analyzing the initial shelter model. If the current reinforced shelter model does not have any easily destructible locations, then the current reinforced shelter model is the optimal shelter design plan for building an actual shelter that meets the explosion-proof requirements of the actual explosion-proof area; if the current reinforced shelter model has easily destructible locations, then the current reinforced shelter model is further structurally strengthened in a similar manner to the local structural strengthening method used to form the current reinforced shelter model until a reinforced shelter model without easily destructible locations is obtained. The reinforced shelter model without easily destructible locations obtained in the end is the optimal shelter design plan for building an actual shelter that meets the explosion-proof requirements of the actual explosion-proof area.

[0060] Most existing shelter design solutions are based on the structure of frame beams and columns plus explosion-proof board walls. The materials and dimensions of the beams and columns used in the shelters are basically the same, the structure is simple, and the ultimate loads borne by different positions of the various pipe groups that constitute the shelters are basically the same. In other words, the existing shelter design solutions are simple and crude, and there is no mechanical analysis of the shelters formed, that is, there is a lack of attention to weak points, and the places where the structural stress is too large are not properly handled, so no local reinforcement measures are taken. The shelters built based on the existing shelter design solutions will affect the stability of the entire shelter structure during the actual explosion-proof process due to the different stresses at different positions, which will eventually cause the failure and damage of the shelter structure and reduce the explosion-proof effect. Therefore, the present invention effectively improves the explosion-proof performance of the shelter through local structural reinforcement.

[0061] In a specific embodiment of the present application, the local structural strengthening treatment includes, but is not limited to, adding angle steel, increasing the local material size, and increasing the local material thickness. The present invention adopts the local structural strengthening treatment method to effectively improve the bending resistance of the shelter construction materials (column steel) in the vulnerable position and increase the load-bearing surface, thereby optimizing the stress concentration state of the shelter and reducing the degree of displacement deformation, thereby improving the explosion resistance of the corresponding vulnerable position. Therefore, the present invention effectively avoids the problem of overall failure of the shelter due to local damage, achieves the effect of strengthening the local structure of the shelter, and improves the overall explosion resistance of the shelter.

[0062] In a specific embodiment of the present application, the additional material used to increase the size and thickness of the local material is the same as the shelter construction material or has a higher strength than the shelter construction material.

[0063] In addition, existing shelter design solutions usually select the size and layout spacing of the columns that constitute the shelter based on the size of the building, the incident overpressure and duration of the explosion shock wave, and are relatively templated in the design process. This design concept usually results in excess explosion-proof capacity of some structures of the shelter, resulting in a lot of material waste and increasing production and protection costs. Therefore, after obtaining the optimal shelter design solution, the present invention also performs material reduction processing on the current optimal shelter design solution, thereby obtaining a first shelter model that uses the least construction material in the actual area to be explosion-proof, so as to update the current optimal shelter design solution using the first shelter model. Specifically, the reinforced shelter model corresponding to the current optimal shelter design solution that does not have easily damaged locations is subjected to mechanical analysis using analytical mechanics, thereby determining the areas of excess explosion-proof performance of the shelter that exist in the current optimal shelter design solution (i.e., stress dispersion areas and areas with minimal displacement deformation). Afterwards, according to the areas with excess explosion-proof performance, the overall structure of the shelter in the current best shelter design was optimized and reduced in material. On the premise of meeting the explosion-proof requirements, the overall material usage of the shelter was scientifically and rationally reduced, thereby obtaining the first shelter model with the least construction materials in the actual explosion-proof area. Finally, the first shelter model was used to update the current best shelter design, effectively reducing production costs.

[0064] In a specific embodiment of the present application, the material reduction processing method includes but is not limited to: reducing the steel density in the area with excess explosion-proof performance, increasing the distance between beams and columns, reducing the size of beams and columns, reducing the thickness of beams and columns, and reducing the thickness of explosion-proof wall panels.

[0065] Furthermore, the present invention also performs material reduction verification processing on the first shelter model, first based on the technical indicators used to evaluate the material reduction degree of the shelter design scheme, determine whether the first shelter model reaches the material reduction limit, and when the material reduction limit is reached, determine whether there are no easily damaged positions on the first shelter model. If so, the first shelter model is re-structurized, material reduced, and the material reduction degree is evaluated until a second shelter model is obtained in which there are no easily damaged positions and which reaches the material reduction limit, so as to update the current best shelter model using the second shelter model; or, when the material reduction limit is not reached, the first shelter model is re-processed with material reduction to obtain a corresponding shelter model in which there are no easily damaged positions and which reaches the material reduction limit, so as to update the current best shelter model using the current shelter model.

[0066] Specifically, after obtaining the first shelter model, this embodiment performs a material reduction verification process on the first shelter model to determine whether the current first shelter model still has room for material reduction. In this process, this embodiment first determines whether the current first shelter model can be further optimized for overall material reduction based on technical indicators used to evaluate the degree of material reduction in shelter design solutions (for example, technical indicators in the "Petrochemical Building Explosion-Resistant Design Standard"), that is, whether the first shelter model has reached the material reduction limit.

[0067] When the result of the determination is that the limit of material reduction has been reached, the vulnerable position of the current first shelter model is obtained in a similar analysis method to the analysis of the initial shelter model. When there is a vulnerable position in the current first shelter model, the current first shelter model is re-strengthened in a local structural strengthening method similar to the strengthening of the initial shelter model, and the material is re-reduced in a similar material reduction method to obtain the current first shelter model to generate a new shelter model, and after the material reduction process is completed, the corresponding material reduction degree evaluation is performed until a second shelter model is obtained that does not have a vulnerable position and reaches the limit of material reduction. Finally, the second shelter model is used to update the current optimal shelter design scheme for the first shelter model.

[0068] Alternatively, when the result of the determination is that the material reduction limit has not been reached, a new shelter model is generated by re-reducing the material in a similar manner to the material reduction treatment method used to obtain the current first shelter model, until a shelter model that reaches the material reduction limit is obtained. After the shelter model that reaches the material reduction limit is generated, a corresponding shelter model that does not have vulnerable locations and reaches the material reduction limit is obtained in a similar manner to the structural strengthening, material reduction treatment, and material reduction degree evaluation method used when the result of the determination is that the material reduction limit has been reached. Finally, the current optimal shelter design scheme for the first shelter model is updated using the shelter model that does not have vulnerable locations and reaches the material reduction limit.

[0069] In a specific embodiment of the present application, technical indicators regarding the degree of material reduction include but are not limited to maximum deflection and maximum rotation angle.

[0070] Embodiment 2

[0071] In a specific embodiment of the present application, the explosion-proof area is a building in a chemical park with a length of 7.5m, a width of 16m, and a height of 3m. To ensure the safety of the building under potential explosion sources, a shelter is installed outside the building to increase the explosion-proof performance. The peak load that the installed shelter needs to withstand is 69kPa, and the duration is 20ms.

[0072] According to the method for optimizing the explosion-proof performance of the shelter described in Example 1, according to the design requirements of the currently installed shelter, the characteristic parameters of the shelter of the currently installed shelter are determined, wherein the size of the currently installed shelter is 8×16.5×3.5m, the distance between the columns is 0.66m (the distance between the two ends of the columns and the frame columns is 0.61m), the distance between the beams around is 1.1m, the distance between the beams on the top plate is 1.0m (the distance between the two ends of the beams on the top plate is 0.95m from the frame columns), and the distance between the longitudinal beams on the top plate is 0.66m (the distance between the two ends of the longitudinal beams on the top plate is 0.61m from the frame columns). Among them, the frame column is a square steel with a size of 0.1×0.1m and a hollow interior, and the thickness of the frame column is 0.01m; the beam column is a rectangular steel with a size of 0.1×0.05m and a hollow interior, and the thickness of the beam column is 0.004m; the currently installed shelter is covered with corrugated plates around, and the thickness of the corrugated plates is 0.003m.

[0073] Figure 2 It is a schematic diagram of the overall structure of an initial shelter model of the method for optimizing the explosion-resistant performance of a shelter according to an embodiment of the present application. Figure 3 Schematic diagram of the skeleton structure of the initial shelter model of the method for optimizing the explosion-proof performance of the shelter in the embodiment of the present application. In the embodiment of the present application, according to the method for optimizing the explosion-proof performance of the shelter described in the first embodiment, based on the petrochemical explosion simulation system, a shelter parameterized modeling script for constructing the initial shelter model is written, and the shelter characteristic parameters of the currently installed shelter are input into the written JavaScript script, and the initial shelter model of the currently installed shelter is established and meshed, and the following is obtained: Figure 2 and Figure 3 Initial shelter model of the current addition shelter shown.

[0074] Figure 4 This is a schematic cloud diagram of the displacement of the shelter before the local structural reinforcement of the method for optimizing the explosion-proof performance of the shelter in an embodiment of the present application. After the initial shelter model of the currently installed shelter is established, this embodiment continues to write a JavaScript script for dynamic calculation simulating the explosion-proof process based on the petrochemical explosion simulation system, and inputs the material property parameters, component contact parameters, boundary condition parameters and load application parameters of the shelter, as well as monitoring point parameters, into the written JavaScript script for dynamic calculation simulating the explosion-proof process, and performs a dynamic mechanical analysis on the explosion-proof process of the currently installed shelter. Figure 4 The stress concentration characteristics of the currently installed shelter are shown. This embodiment determines that the stress concentration positions of the currently installed shelter are the ends of the blast-facing columns and the ends of the frame columns, and the position of maximum displacement and deformation is the middle part of the blast-facing columns, where the maximum displacement is 13.61 mm, the elevation is 1.97 m, and the support angle is 0.40°.

[0075] Figure 5Schematic diagram of the angle steel adding method for optimizing the explosion-proof performance of the shelter in the embodiment of the present application. Figure 5 As shown, this embodiment achieves local structural reinforcement by installing angle steel at the ends of the frame columns and the ends of the columns of the currently installed shelter, thereby improving the overall explosion-proof performance of the currently installed shelter in terms of optimizing stress concentration. When the lengths of the right-angle sides of the installed angle steel are 240 mm, the stress concentration characteristics of the currently installed shelter are as follows: Figure 6 As shown ( Figure 6 is a displacement diagram of adding 240mm angle steel in the method for optimizing the explosion-proof performance of the shelter according to the embodiment of the present application); when the lengths of the right-angle sides of the added angle steel are 300mm respectively, the stress concentration characteristics of the current added shelter are as follows Figure 7 As shown ( Figure 7 is a displacement diagram of adding 300mm angle steel in the method for optimizing the explosion-proof performance of the shelter according to the embodiment of the present application); when the lengths of the right-angle sides of the added angle steel are 400mm respectively, the stress concentration characteristics of the current added shelter are as follows Figure 8 As shown ( Figure 8 This is a schematic cloud diagram of the displacement of adding 400mm angle steel in the method for optimizing the explosion-proof performance of a shelter in an embodiment of the present application).

[0076] Continue to refer to Figure 6 , Figure 7 and Figure 8 In the embodiment of the present application, when the length of the right-angle side of the added angle steel is 240mm, 300mm and 400mm respectively, the maximum displacement deformation is 10.00mm, 9.11mm and 7.48mm respectively, the maximum displacement deformation elevation is 2.02m, 2.13m and 2.14m respectively, and the maximum support angle is 0.28°, 0.25° and 0.20° respectively. In other words, compared with the shelter without angle steel, the maximum displacement deformation of the current added shelter is reduced by 26.52%, 33.06% and 45.04% respectively, and the maximum support angle is reduced by 30.00%, 37.50% and 49.39% respectively. In summary, the above three methods of adding angle steel have achieved the established optimization effect, but the optimization effect of the angle steel with a right-angle side length of 400mm is the best. Therefore, this embodiment chooses to add an angle steel with a right-angle side length of 400mm to the current added shelter to strengthen the local structure.

[0077] Fig. 9 It is a schematic diagram of the overall structure of a shelter model after material reduction in a method for optimizing explosion-resistant performance of a shelter according to an embodiment of the present application. Fig.101 is a schematic diagram of the skeleton structure of the shelter model after material reduction in the method for optimizing the explosion-proof performance of the shelter in the embodiment of the present application. After obtaining the optimal shelter design scheme for the current installation of the shelter, this embodiment obtains the explosion-proof performance excess area in the current optimal shelter design scheme according to the method for optimizing the explosion-proof performance of the shelter described in the first embodiment, thereby obtaining the following: Fig. 9 and Fig.10 The first shelter model of the currently installed shelter is shown. In the embodiment of the present application, the column spacing of the currently installed shelter after the material reduction process is 1.2m (the ends of the columns are 1.55m away from the frame columns), the spacing of the surrounding beams is 1.1m, the spacing of the top plate beams is 1.5m (the ends of the top plate beams are 1.65m away from the frame columns), and the spacing of the top plate longitudinal beams is 1.2m (the ends of the top plate longitudinal beams are 1.55m away from the frame columns).

[0078] Next, according to the method for optimizing the explosion resistance of the shelter described in Example 1, it is determined that the first shelter model of the currently installed shelter has reached the material reduction limit. By determining whether there is no easily damaged position on the first shelter model of the currently installed shelter, the stress concentration characteristics of the currently installed shelter are obtained as follows: Fig.11 As shown ( Fig.11 1 is a schematic cloud diagram of the displacement of the shelter model after material reduction in the method for optimizing the explosion-proof performance of the shelter in the embodiment of the present application). In the embodiment of the present application, the maximum displacement deformation of the first shelter model currently equipped with the shelter is 9.75 mm, the maximum displacement deformation elevation is 2.56 m, the maximum support angle is 0.22°, and the requirements of no easily damaged position and reaching the limit of material reduction are met.

[0079] Therefore, this embodiment takes the first shelter model of the current additional shelter as the optimal shelter design scheme. Compared with the maximum displacement deformation and support angle of the initial shelter model, the optimal shelter design scheme has a certain degree of reduction, and the stress concentration problem has also been optimized. At this time, the stress distribution of the additional shelter is more scientific and reasonable, and the use of steel is reduced by 32.53%, which effectively reduces the production cost.

[0080] Embodiment 3

[0081] Based on the method for optimizing the explosion-proof performance of a shelter described in the first embodiment, an embodiment of the present invention further provides a system for optimizing the explosion-proof performance of a shelter. Fig.12 It is a module block diagram of a system for optimizing explosion-proof performance of a shelter according to an embodiment of the present application.

[0082] like Fig.12As shown, the system for optimizing the explosion-proof performance of a shelter in an embodiment of the present invention includes: a model building module 121, an explosion-proof simulation module 122, and a design solution generation module 123. The model building module 121 is implemented according to the method described in step S110 above, and is configured to configure the characteristic parameters of the shelter that meet the explosion-proof requirements for the explosion-proof area and construct an initial shelter model; the explosion-proof simulation module 122 is implemented according to the method described in step S120 above, and is configured to use the initial shelter model constructed by the model building module 121 to perform explosion-proof simulation, obtain the dynamic stress characteristics on the initial shelter model during the explosion-proof process, and thus determine the vulnerable position; the design solution generation module 123 is implemented according to the method described in step S130 above, and is configured to perform local structural reinforcement on the initial shelter model for the vulnerable position determined by the explosion-proof simulation module 122, and determine whether there is a vulnerable position on the reinforced shelter model, wherein if there is no vulnerable position, the current reinforced shelter model is used as the best shelter design solution, or if there is, the vulnerable position on the current reinforced shelter model is subjected to secondary structural reinforcement until a reinforced shelter model without vulnerable positions is obtained.

[0083] The present invention discloses a method and system for optimizing the explosion resistance of a shelter. The method is based on analytical mechanics and wide-area impact dynamics simulation that can accurately describe the deformation and fragmentation of structures during explosion impacts, and couples them to obtain a shelter design scheme without vulnerable locations. The method first uses wide-area impact dynamics simulation to model the entire shelter and performs explosion resistance simulation on the constructed model to obtain the stress distribution of the overall structure of the shelter. Then, analytical mechanics is used to analyze the vulnerable locations of the shelter, namely, stress concentration locations and maximum deformation locations. Finally, local reinforcement is performed on vulnerable locations until a reinforced shelter model without vulnerable locations is obtained. In addition, the present invention also performs overall material reduction on the reinforced shelter model that does not currently have vulnerable positions, and verifies whether the model after material reduction has vulnerable positions. If so, the vulnerable positions are structurally strengthened. If not, the current reinforced shelter model is used as the best shelter design. Or, if so, the vulnerable positions on the current reinforced shelter model are structurally strengthened twice until a reinforced shelter model without vulnerable positions is obtained, and then the overall material reduction is performed on the model, and it is verified whether the model after material reduction has vulnerable positions. If so, the vulnerable positions are structurally strengthened. If not, the current reinforced shelter model is used as the best shelter design. The present invention effectively improves the explosion impact resistance of vulnerable positions, avoids overall destruction of the shelter due to local stress concentration, and improves the overall explosion resistance of the shelter. In addition, while effectively improving the explosion resistance of the shelter, the present invention also performs material reduction processing on the areas with excess explosion resistance in the shelter, effectively reducing the overall material usage of the shelter, thereby reducing the production cost of the shelter.

[0084] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any person familiar with the technology within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

[0085] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims of the present invention.

[0086] It should be understood by those skilled in the art that the modules or steps of the present invention described above can be implemented by a general-purpose computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, and optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0087] Although the embodiments disclosed in the present invention are as above, the above contents are only embodiments adopted for facilitating the understanding of the present invention and are not intended to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the present invention, but the patent protection scope of the present invention shall still be subject to the scope defined in the attached claims.

Claims

1. A method for optimizing the explosion resistance of a shelter, characterized in that: include: Configure characteristic parameters of the shelter that meet the explosion-proof requirements for the explosion-proof area and build an initial shelter model; Using the initial shelter model to perform explosion-proof simulation, obtain dynamic stress characteristics on the initial shelter model during the explosion-proof process, and thus determine vulnerable locations; The initial shelter model is locally reinforced for the vulnerable position, and it is determined whether there is a vulnerable position on the reinforced shelter model, wherein: When it does not exist, the current reinforced shelter model is taken as the optimal shelter design plan, or when it exists, secondary structural reinforcement is performed on the vulnerable positions on the current reinforced shelter model until a reinforced shelter model without vulnerable positions is obtained.

2. The method according to claim 1, characterized in that After obtaining the optimal shelter design solution, the method further includes: The current best shelter design solution is processed by material reduction, so as to obtain a first shelter model using the least construction materials in the actual explosion-resistant area, and the current best shelter design solution is updated using the first shelter model.

3. The method according to claim 2, characterized in that Material reduction methods include but are not limited to: reducing the steel density in areas with excess explosion-proof performance, increasing the distance between beams and columns, reducing the size of beams and columns, reducing the thickness of beams and columns, and reducing the thickness of explosion-proof wall panels.

4. The method according to claim 2 or 3, characterized in that: The method further includes: performing a subtractive verification process on the first shelter model, including: Based on the technical indicators for evaluating the material reduction degree of the shelter design scheme, it is determined whether the first shelter model has reached the material reduction limit, and when the material reduction limit is reached, it is determined whether there are no easily damaged positions on the first shelter model. If so, the first shelter model is re-structuring, material reduction processing and material reduction degree evaluation until a second shelter model without easily damaged positions and reaching the material reduction limit is obtained, so as to use the second shelter model to update the current best shelter model; or, When the material reduction limit is not reached, the first shelter model is re-processed with material reduction to obtain a corresponding shelter model without easily damaged locations and reaching the material reduction limit, so as to update the current optimal shelter model using the current shelter model.

5. The method according to claim 4, characterized in that Technical indicators regarding the degree of material reduction include but are not limited to maximum deflection and maximum rotation angle.

6. The method according to any one of claims 1 to 5, characterized in that: Methods of local structural strengthening include but are not limited to adding angle steel, increasing local material size and increasing local material thickness.

7. The method according to claim 6, characterized in that The additional material used to increase the size of the local material and the thickness of the local material is the same as the shelter construction material or has a strength higher than the shelter construction material.

8. The method according to any one of claims 1 to 7, characterized in that: The structure of the initial shelter model includes but is not limited to: frame columns, columns, surrounding beams, top beams, top longitudinal beams and explosion-proof panels, wherein: The frame column is a square steel with a hollow interior; The columns, the surrounding cross beams, the top plate cross beams and the top plate longitudinal beams are respectively made of rectangular steel with hollow interiors; and The explosion-proof panels cover the outer surface of the shelter.

9. The method according to any one of claims 1 to 8, characterized in that: The steps of configuring characteristic parameters of a shelter that meets explosion-proof requirements for the explosion-proof area and building an initial shelter model include: According to the size of the explosion-proof area, and the incident overpressure and duration of the explosion shock wave that the shelter needs to resist in the explosion-proof area, the characteristic parameters of the shelter are obtained, and the initial shelter model is constructed using the characteristic parameters of the shelter.

10. The method according to claim 9, characterized in that The characteristic parameters of the shelter include size parameters and mechanical parameters, wherein: The size parameters include but are not limited to: the overall size of the shelter, the wall thickness and size of the frame columns, the wall thickness and size of the beams, the wall thickness and spacing of the columns, the wall thickness and spacing of the surrounding beams, the wall thickness and spacing of the top beams, and the wall thickness and spacing of the top longitudinal beams; and The mechanical parameters include, but are not limited to: material property parameters, component contact parameters, boundary condition parameters and load application parameters of the shelter.

11. The method according to any one of claims 1 to 10, characterized in that: The vulnerable positions include but are not limited to: stress concentration positions and maximum displacement deformation positions, wherein: The stress concentration position is located at the end of the explosion-facing column, wherein the column includes but is not limited to a frame column, a beam column, a column, a surrounding beam, a top plate beam and a top plate longitudinal beam; and The position with the maximum displacement deformation is located at the center of the explosion-facing surface cylinder.

12. A system for optimizing the explosion resistance of a shelter, characterized in that: The system includes the following modules: A model building module, which is used to configure characteristic parameters of a shelter that meets explosion-proof requirements for the area to be explosion-proofed and to build an initial shelter model; An anti-explosion simulation module, which is used to perform anti-explosion simulation using the initial shelter model to obtain dynamic stress characteristics on the initial shelter model during the anti-explosion process, thereby determining vulnerable locations; A design scheme generating module is used to locally strengthen the structure of the initial shelter model for the vulnerable positions and determine whether there are vulnerable positions on the strengthened shelter model, wherein, if there are no vulnerable positions, the current strengthened shelter model is used as the best shelter design scheme; or, if there are vulnerable positions, secondary structural strengthening is performed on the vulnerable positions on the current strengthened shelter model until a strengthened shelter model without vulnerable positions is obtained.

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