A fast calculation method for crowd evacuation time in super high-rise buildings

Abstract

The present invention relates to a method for quickly calculating the evacuation time of a crowd in a super high-rise building, which belongs to the field of building safety technology and solves the technical problem that the existing building evacuation simulation software in the prior art uses a long calculation time when calculating the evacuation time of a crowd in a super high-rise building. The present invention comprises: inputting parameters into a mathematical model, calculating the evacuation time of different evacuation methods, and obtaining the total evacuation time. The present application realizes that the evacuation calculation time can be reduced from the calculation time of 1-2 hours of traditional evacuation simulation software to the second level; at the same time, the error of the total evacuation time can be controlled within 5%.

Description

Technical Field

[0001] The present application belongs to the field of building safety technology, and specifically relates to a method for quickly calculating the evacuation time of a crowd in a super high-rise building. Background Art

[0002] Existing building evacuation simulation software mainly uses micro-models such as social force models or agent-based models as principles to simulate the time required for the evacuation of all people in a building. The advantage is that the characteristics of different experimental individuals can be adjusted with a high degree of freedom, and different building environments can be used as simulation scenarios. The disadvantage is that the calculation time is long, especially when it comes to complex buildings and large crowds.

[0003] In summary, the existing technology has a technical problem that the existing building evacuation simulation software has a long calculation time when calculating the evacuation time of people in super high-rise buildings. Now, there is an urgent need for a method that can quickly calculate the overall evacuation time of people in super high-rise buildings. Summary of the invention

[0004] In view of the above analysis, an embodiment of the present invention aims to provide a method for quickly calculating the evacuation time of people in a super high-rise building, so as to solve the technical problem in the prior art that the existing building evacuation simulation software takes a long time to calculate the evacuation time of people in a super high-rise building.

[0005] The object of the present invention is achieved in that:

[0006] On the one hand, a method for quickly calculating the evacuation time of a crowd in a super high-rise building is provided, the method comprising: inputting parameters into a mathematical model, calculating the evacuation time of different evacuation modes, and obtaining the total evacuation time;

[0007] The invention also includes establishing a mathematical model, which includes the following steps: calculating the stair evacuation time ; Calculate elevator evacuation time ; Total evacuation time T takes stair evacuation time and elevator evacuation time The larger of .

[0008] Furthermore, the stair evacuation time is calculated When evacuating from stairs, it is abstracted as layered evacuation, that is, evacuating layer by layer from bottom to top. When evacuating the current layer, all the layers above are in a waiting state.

[0009] Furthermore, the stair evacuation time is calculated , including: Without considering horizontal evacuation, stair evacuation is: starting from the nth floor, the people on the nth floor who choose to evacuate by stairs wait for the When all the people on the nth floor who choose to evacuate by stairs have entered the stairs, the people on the nth floor who choose to evacuate by stairs start to move, where n is an integer greater than 1.

[0010] Furthermore, the time taken by the crowd to evacuate by stairs from the beginning of the action to the time when all the people enter the stairs is the reaction time of the crowd + the total length of the crowd entering the stairs divided by the speed of the crowd going downstairs:

[0011] ,

[0012] in, The time it takes for the people on the nth floor who choose to evacuate by stairs to enter the stairs from the beginning of the action;

[0013] The speed at which people on the nth floor go downstairs;

[0014] is the width of the staircase;

[0015] The length / width of the square where the person is located;

[0016] The number of people who choose to evacuate by stairs;

[0017] The number of people who choose staircase i for evacuation on the nth floor;

[0018] It is the time taken for the personnel evacuation speed to increase from 0 to the maximum speed.

[0019] Furthermore, the total time for evacuating the nth floor by selecting the i-th staircase is divided into:

[0020] The sum of the time taken by people on all floors who choose staircase i for evacuation to enter the staircase Evacuation time of the last person on the floor: ,

[0021] in, , and at the same time satisfy ; ,in,

[0022] is the total stair evacuation time;

[0023] The time it takes for the people on the nth floor who choose to evacuate by stairs to enter the stairs from the beginning of the action;

[0024] The highest floor where people who choose staircase i for evacuation are located;

[0025] is the length of the stairs from the nth floor to the next floor;

[0026] The speed at which people on the nth floor go downstairs.

[0027] Furthermore, the stair evacuation time also includes the time it takes for people who choose to take the elevator to reach the refuge floor by using the stairs.

[0028] Furthermore, the formula for the number of stairs occupied by people on the nth floor who need to reach the Fth floor for elevator evacuation is: , , is the number of stairs. When the crowd is evacuated, multiple stairs are used at the same time, and the actual length of the crowd is dispersed to multiple staircases for evacuation;

[0029] in, The time it takes for people who choose to evacuate by elevator to enter the stairs after they start to evacuate;

[0030] F is the refuge floor;

[0031] is the refuge floor number where elevator j stops;

[0032] is the number of stairs;

[0033] The speed at which people on the nth floor go downstairs;

[0034] is the width of the staircase;

[0035] The length / width of the square where the person is located;

[0036] The number of people on the nth floor who need to reach the F floor by elevator for evacuation.

[0037] Furthermore, the total time for people arriving at the F floor to evacuate by elevator to evacuate by stairs is:

[0038] ; The total time that people who choose the elevator need to take the stairs The maximum value in

[0039] in, The time taken by staircase evacuation is used to evacuate people who choose elevators;

[0040] The time it takes for people who choose to evacuate by elevator to enter the stairs from the beginning of the action;

[0041] F is the refuge floor;

[0042] is the length of the staircase from the nth floor to the next floor;

[0043] The speed at which people on the nth floor go downstairs;

[0044] It is the highest floor where people who need to reach the F floor to take the elevator for evacuation are located.

[0045] Furthermore, the total evacuation time of the stairs is ,

[0046] in, is the total stair evacuation time;

[0047] The time taken by stair evacuation is used to evacuate people who choose elevator.

[0048] Furthermore, the elevator evacuation time is calculated Including: The time taken for elevator j to travel between the ground floor and the designated refuge floor is: ; The total time required for elevator j to travel between the ground floor and the designated refuge floor is: ,

[0049] in, is the total elevator evacuation time;

[0050] The door opening time required for the elevator to go / return once;

[0051] For the Height of the floor;

[0052] Rated speed for the elevator;

[0053] is the elevator running acceleration;

[0054] The time taken for elevator j to travel between the ground floor and the designated refuge floor.

[0055] Furthermore, the total evacuation time of elevator j is: ,

[0056] The total evacuation time of the elevator is ,

[0057] in, is the total elevator evacuation time;

[0058] F is the refuge floor;

[0059] is the refuge floor number where elevator j stops;

[0060] The number of people who choose elevator j for evacuation on the nth floor;

[0061] is the maximum load capacity of elevator j;

[0062] It is the total time required for elevator j to travel between the ground floor and the designated refuge floor.

[0063] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0064] The present invention provides a method for quickly calculating the evacuation time of people in a super high-rise building. The method uses a mathematical model algorithm to calculate the overall evacuation time of people in a super high-rise building from a macro level, and can reduce the evacuation calculation time from 1-2 hours of calculation time of traditional evacuation simulation software to seconds; at the same time, the error of the total evacuation time can be controlled within 5%. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0066] Figure 1 The present invention provides a flowchart of a method for quickly calculating the evacuation time of a crowd in a super high-rise building.

[0067] Figure 2 A flow chart of the method for establishing a mathematical model provided by the present invention.

[0068] Figure 3 A schematic diagram of the action time of all personnel in the method for quickly calculating the evacuation time of a crowd in a super high-rise building provided by the present invention;

[0069] Figure 4 A schematic diagram of the last person waiting time of the method for quickly calculating the crowd evacuation time in a super high-rise building provided by the present invention;

[0070] Figure 5 A schematic diagram of the time it takes for the last person in the method for quickly calculating the evacuation time of a crowd in a super high-rise building provided by the present invention to continue evacuating to the ground floor. DETAILED DESCRIPTION

[0071] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. It should be noted that, in the absence of conflict, the embodiments in the present disclosure and the features in the embodiments can be combined, separated, interchanged and / or rearranged with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0072] In the accompanying drawings, the size and relative size of components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments may be implemented differently, a specific process sequence may be performed in a different order than described. For example, two successively described processes may be performed substantially simultaneously or in an order opposite to the order described. In addition, the same reference numerals represent the same components.

[0073] The terms used here are for the purpose of describing specific embodiments, and are not intended to be restrictive. As used here, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, it is explained that there are stated features, integral bodies, steps, operations, parts, assemblies and / or their groups, but it is not excluded that there are or add one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups. It should also be noted that, as used here, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0074] The calculation background of the present invention is:

[0075] 1. In a super high-rise building, calculate the time required for all personnel to safely evacuate to the ground floor using stairs and evacuation elevators;

[0076] 2. Not considering the disturbance caused by the evacuation event itself;

[0077] 3. Regardless of any unexpected events during the evacuation, the evacuation was always orderly, with everyone moving downwards;

[0078] 4. It does not take into account the time it takes individuals to respond to an evacuation event;

[0079] 5. Does not take into account micro factors such as individual herd mentality.

[0080] The calculation premise of the present invention is:

[0081] 1. When evacuating from the ground floor to the outside of the building, there is enough width and no crowding, that is, the evacuation is completed when the personnel reach the ground floor. Usually, the evacuation efficiency from the ground floor to the outside of the building should be higher than the efficiency of evacuating from other floors to the ground floor, otherwise, only the evacuation time from the ground floor to the outside of the building needs to be calculated.

[0082] 2. Ignore the time for horizontal evacuation. The structure of super high-rise buildings determines that the horizontal evacuation time is usually very short, usually within 1 minute, which is much shorter than the vertical evacuation time of super high-rise buildings.

[0083] 3. Different floors have different heights.

[0084] 4. The stairs above and below the refuge floor will be staggered, but they are all in the same core tube and are usually adjacent, so the time taken to change stairs is negligible.

[0085] 5. Stair evacuation will not stagnate. Even if the individual speeds are different during the evacuation, there will be no vacancies, that is, the density of the evacuated crowd remains stable.

[0086] 6. All evacuation elevators go directly between the ground floor and the designated refuge floor. The designated refuge floors of different elevators are different.

[0087] The variables of this embodiment are summarized as follows: is the total evacuation time (s);

[0088] is the total stair evacuation time (s);

[0089] The time (s) taken by the people on the nth floor who choose to evacuate by stairs from the beginning of the action to the time when all of them enter the stairs;

[0090] The highest floor where people who choose staircase i for evacuation are located;

[0091] is the total elevator evacuation time (s);

[0092] The time taken by staircase evacuation is used to evacuate people who choose elevators;

[0093] The time (s) taken by the crowd who choose the elevator to evacuate from the beginning of the action to the time when all of them enter the stairs;

[0094] F is the refuge floor;

[0095] is the refuge floor number where elevator j stops;

[0096] is the total number of layers;

[0097] is the number of stairs;

[0098] is the number of elevators;

[0099] is the length of the staircase from the nth floor to the next floor (m);

[0100] The speed at which people on the nth floor go downstairs (m / s);

[0101] is the flow rate per unit width of entering / exiting elevator j;

[0102] is the width of the staircase;

[0103] is the width of elevator j;

[0104] The length / width of the square where the person is located (m) (considering the minimum distance between people);

[0105] is the initial number of people in the nth layer;

[0106] The number of people who choose to evacuate by stairs;

[0107] The total number of people who choose the elevator for evacuation;

[0108] The number of people who choose staircase i for evacuation on the nth floor;

[0109] Select elevator for floor n Number of people evacuated;

[0110] The number of people who need to reach the F floor and take the elevator for evacuation;

[0111] The number of people on the nth floor who need to reach the Fth floor by elevator for evacuation;

[0112] The highest floor where people who need to reach the F floor to take the elevator for evacuation are located;

[0113] is the maximum load capacity of elevator j;

[0114] The total time required for elevator j to travel between the ground floor and the designated refuge floor;

[0115] The time taken by elevator j to travel between the ground floor and the designated refuge floor;

[0116] The door opening time required for the elevator to go / return once;

[0117] For the Height of the floor (relative to the ground);

[0118] Rated speed for the elevator;

[0119] is the elevator running acceleration;

[0120] The time taken for the personnel evacuation speed to increase from 0 to the maximum speed (i.e., the start-up time);

[0121] is the crowding coefficient of elevator j;

[0122] is the crowding coefficient of staircase i;

[0123] is the stair slope index;

[0124] is the initial speed of the personnel on the nth floor (m / s).

[0125] Example 1

[0126] A specific embodiment of the present invention, as Figures 1 to 3 As shown, a method for quickly calculating the evacuation time of people in a super high-rise building is disclosed. The method includes: inputting parameters into a mathematical model to calculate the evacuation time of different evacuation methods to obtain the total evacuation time.

[0127] Compared with the existing technology, this technical solution can reduce the evacuation calculation time from 1-2 hours of calculation time of traditional evacuation simulation software to seconds; at the same time, the error of the total evacuation time can be controlled within 5%.

[0128] Furthermore, the method further comprises establishing a mathematical model, wherein establishing the mathematical model comprises the following steps: calculating the stair evacuation time ; Calculate elevator evacuation time Total evacuation time Evacuation time by stairs and elevator evacuation time The larger of .

[0129] By establishing a mathematical model, the overall evacuation time of people in super high-rise buildings can be calculated from a macro level. Among them, stair evacuation and elevator evacuation are carried out simultaneously, and the larger value of the stair evacuation time and the elevator evacuation time is the total evacuation time.

[0130] Furthermore, the stair evacuation time is calculated In order to use mathematical models to calculate the stair evacuation time, stair evacuation is abstracted as layered evacuation, that is, people are evacuated layer by layer from bottom to top. When evacuating the current layer, the layers above are in a waiting state.

[0131] The stair evacuation time can be broken down into ,

[0132] : All-staff action time - all stair evacuation personnel enter the staircase and evacuate to the next floor

[0133] The time it takes to enter the waiting state at the staircase;

[0134] : Last person waiting time - the waiting time of the last person evacuating from the top staircase, which is also the total waiting time in all staircase evacuations;

[0135] : The time when the last person continues to evacuate to the ground floor;

[0136] : The time it takes for people evacuating the elevator to use the stairs to reach the elevator landing - whether it will increase the total time depends on how long it takes to evacuate the stairs on the lower floors.

[0137] The evacuation time of a single staircase can be expressed as: , which can be expressed as the waiting time for the last person to evacuate the stairs on the highest floor + the evacuation time. The corresponding formula is:

[0138] ,

[0139] in, , and at the same time satisfy ,

[0140] in, .

[0141] That is, the time it takes for the elevator to evacuate people and take the stairs to reach the elevator landing. The corresponding formula is: ,

[0142] in, The time taken by staircase evacuation is used to evacuate people who choose elevators;

[0143] The time (s) taken by the crowd who choose the elevator to evacuate from the beginning of the action to the time when all of them enter the stairs;

[0144] F is the refuge floor;

[0145] is the length of the staircase from the nth floor to the next floor (m);

[0146] The speed at which people on the nth floor go downstairs (m / s);

[0147] It is the highest floor where people who need to reach the F floor to take the elevator for evacuation are located.

[0148] The total stair evacuation time can be expressed as: , the corresponding formula is: ,

[0149] in, is the total stair evacuation time (s);

[0150] The time taken by stair evacuation is used to evacuate people who choose elevator.

[0151] The total evacuation time for crowd evacuation through stairs can be calculated by this calculation formula.

[0152] By abstracting stair evacuation into layered evacuation, the complex data model can be simplified into a simple data model for processing.

[0153] Preferably, calculate the stair evacuation time , including: In super high-rise buildings, ignoring the negligible horizontal evacuation time, stair evacuation is: starting from the nth floor, the people on the nth floor who choose to evacuate by stairs wait for the When all the people who choose to evacuate by stairs on the nth floor enter the stairs, the people who choose to evacuate by stairs on the nth floor start to move, where n is an integer greater than 1. Horizontal evacuation refers to the evacuation of people on the same floor of the building from their current location to the evacuation exit on the same floor. The evacuation exits include but are not limited to evacuation stairs, evacuation elevators, etc.

[0154] Specifically, for stair i, the stair refers to the staircase from the lowest floor to the highest floor of the entire building, and i refers to the number of stairs.

[0155] The time taken by the people on the second floor who choose to evacuate by stairs from the beginning of the action to the time when all of them enter the stairs is the reaction time of the crowd + the total length of the crowd entering the stairs divided by the speed of the people on the second floor going downstairs:

[0156] ,Right now:

[0157] , , , n is an integer greater than 1.

[0158] Therefore, the total time for evacuating the nth floor by choosing the i-th staircase can be divided into:

[0159] The sum of the time taken by people on all floors who choose staircase i for evacuation to enter the staircase Evacuation time of the last person on the floor:

[0160] ,

[0161] in, , and at the same time satisfy ,

[0162] in, .

[0163] In summary, the time taken by the crowd to evacuate by stairs from the beginning of the action to the time when all the people enter the stairs is the reaction time of the crowd + the total length of the crowd entering the stairs divided by the speed of the crowd going downstairs:

[0164] ,

[0165] in, The time (s) it takes for the people on the nth floor who choose to evacuate by stairs to enter the stairs from the beginning of the action;

[0166] The speed at which people on the nth floor go downstairs (m / s);

[0167] is the width of the staircase;

[0168] is the length / width of the square where the person is located (m);

[0169] The number of people who choose to evacuate by stairs;

[0170] The number of people who choose staircase i for evacuation on the nth floor;

[0171] It is the time taken for the personnel evacuation speed to increase from 0 to the maximum speed.

[0172] Furthermore, the stair evacuation time also includes the time for people who choose to take the elevator to reach the refuge floor by using the stairs. The calculation of the evacuation time for people who choose to take the elevator to reach the refuge floor by using the stairs is similar to the stair evacuation formula.

[0173] This technical means takes the actual situation into consideration. The system comprehensively calculates the different situations in the crowd and takes into account the time taken by people who choose to take the elevator to reach the refuge floor by stairs.

[0174] The F floor is the refuge floor. The refuge floor is a floor used by people in the building to temporarily avoid fire and smoke in case of fire. Industrial and civil buildings with a building height of more than 100m should have a refuge floor, and the height from the floor of the first refuge floor to the ground of the fire truck climbing operation site should not be greater than 50m. The net area of ​​the refuge area should meet the refuge requirements of all users of all floors between the refuge floor and the previous refuge floor. The refuge floor should be equipped with fire elevator exits, fire hydrants, fire hose reels, fire extinguishers, fire dedicated telephones and emergency broadcasts.

[0175] Further, The time taken by the crowd from the beginning of the action to the time when all of them enter the stairs is: the crowd's reaction time + the total length of the crowd entering the stairs divided by the first The speed at which people on the nth floor go downstairs. So the formula for the number of stairs occupied by people on the nth floor who need to reach the Fth floor for elevator evacuation is: , , is the number of stairs. When people are evacuating, multiple stairs are used at the same time, and the actual length of the crowd is dispersed to multiple staircases for evacuation. This formula can be used to calculate the time it takes for people who choose to take the elevator to reach the refuge floor by using the stairs.

[0176] in, The time (s) taken by the crowd who choose the elevator to evacuate from the beginning of the action to the time when all of them enter the stairs;

[0177] F is the refuge floor;

[0178] is the refuge floor number where elevator j stops;

[0179] is the number of stairs;

[0180] The speed at which people on the nth floor go downstairs (m / s);

[0181] is the width of the staircase;

[0182] is the length / width of the square where the person is located (m);

[0183] The number of people on the nth floor who need to reach the F floor and take the elevator to evacuate.

[0184] Furthermore, the total time for people arriving at the F floor to evacuate by elevator to evacuate by stairs is:

[0185] , the total time people who choose the elevator need to take the stairs The maximum value in .

[0186] The calculation formula can be used to specifically calculate the total time it takes for people arriving at the F floor to evacuate by elevator to evacuate by stairs.

[0187] in, The time taken by staircase evacuation is used to evacuate people who choose elevators;

[0188] The time (s) taken by the crowd who choose the elevator to evacuate from the beginning of the action to the time when all of them enter the stairs;

[0189] F is the refuge floor;

[0190] is the length of the staircase from the nth floor to the next floor (m);

[0191] The speed at which people on the nth floor go downstairs (m / s);

[0192] It is the highest floor where people who need to reach the F floor to take the elevator for evacuation are located.

[0193] Furthermore, the total evacuation time of the stairs is ,in, is the total stair evacuation time (s);

[0194] The time taken by stair evacuation is used to evacuate people who choose elevator.

[0195] Through the above-mentioned technical means, relying on pure mathematical formulas, the calculation of crowd stair evacuation time no longer needs to rely on complex microscopic simulation.

[0196] Furthermore, the elevator evacuation time is calculated Including: The time taken for elevator j to travel between the ground floor and the designated refuge floor is: ;

[0197] The total time required for elevator j to travel between the ground floor and the designated refuge floor is: The time it takes for a single elevator to travel back and forth is related to the maximum speed, acceleration, door opening and closing time, and stop time.

[0198] in, is the total elevator evacuation time (s);

[0199] The door opening time required for the elevator to go / return once;

[0200] is the height of the nth floor;

[0201] Rated speed for the elevator;

[0202] is the elevator running acceleration;

[0203] The time taken by elevator j to travel between the ground floor and the designated refuge floor;

[0204] is the crowding coefficient of entering and exiting the elevator.

[0205] Among them, the total time of elevator j's round trip is It is related to the elevator running speed, elevator door opening and closing time and elevator loading time.

[0206] The calculation formula can be used to calculate the total time it takes for elevator j to make a round trip when evacuating a crowd.

[0207] Furthermore, the total evacuation time of each elevator, that is, the total evacuation time of elevator j is: ,

[0208] The total evacuation time of the elevator that evacuates the latest = the total evacuation time of the elevator, that is, the total evacuation time of the elevator is ,

[0209] in, is the total elevator evacuation time (s);

[0210] F is the refuge floor;

[0211] is the refuge floor number where elevator j stops;

[0212] The number of people who choose elevator j for evacuation on the nth floor;

[0213] is the maximum load capacity of elevator j;

[0214] It is the total time required for elevator j to travel between the ground floor and the designated refuge floor.

[0215] The total evacuation time of elevator j can be calculated by this calculation formula.

[0216] Furthermore, the parameters include building parameters and personnel parameters.

[0217] Furthermore, the evacuation mode includes stair evacuation time and elevator evacuation time.

[0218] Furthermore, the calculation of the total evacuation time is specifically as follows: the larger one of the stair evacuation time and the elevator evacuation time is calculated as the total evacuation time.

[0219] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0220] The method for quickly calculating the evacuation time of people in super high-rise buildings provided by the present invention can reduce the evacuation calculation time from 1-2 hours of calculation time of traditional evacuation simulation software to seconds; at the same time, the error of the total evacuation time can be controlled within 5%.

[0221] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above description is only the specific implementation method of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A method for quickly calculating the evacuation time of people in a super high-rise building, characterized in that: The rapid calculation method comprises: inputting parameters into a mathematical model, calculating the evacuation time of different evacuation modes, and obtaining the total evacuation time; The invention also includes establishing a mathematical model, which includes the following steps: calculating the stair evacuation time ; Calculate elevator evacuation time ; Total evacuation time T takes stair evacuation time and elevator evacuation time The larger of Calculating stair evacuation time , including: Without considering horizontal evacuation, stair evacuation is: starting from the nth floor, the people on the nth floor who choose to evacuate by stairs wait for the When all the people who choose to evacuate by stairs on the first floor enter the stairs, the people who choose to evacuate by stairs on the nth floor start to move, where n is an integer greater than 1; The time taken by the crowd who choose to evacuate by stairs from the beginning of the action to the time when all of them enter the stairs is the reaction time of the crowd + the total length of the crowd entering the stairs divided by the speed of the crowd going downstairs, expressed as follows: The time it takes for the people on the nth floor who choose to evacuate by stairs to enter the stairs from the beginning of the action; The speed at which people on the nth floor go downstairs; is the width of the staircase; The length / width of the square where the person is located; The number of people who choose staircase i for evacuation on the nth floor; The time taken for the personnel evacuation speed to increase from 0 to the maximum speed; The total time for evacuating from the nth floor by choosing the i-th staircase , which can be decomposed into the sum of the time taken by people on all floors who choose staircase i for evacuation to enter the staircase The evacuation time of the last person on the floor is expressed as follows: in, Indicates the highest floor where people who choose staircase i for evacuation are located. , is the crowding coefficient of staircase i, is the initial speed of the personnel in the nth layer, is the length of the staircase from the nth floor to the next floor, and K is the stair slope index; The stair evacuation time also includes the time it takes for people who choose to take the elevator to reach the refuge floor F by using the stairs, and the time it takes for people on the nth floor to reach the F floor to evacuate by elevator to occupy the stairs. for: , , F represents the refuge layer, is the number of stairs; The total time for people arriving at the F floor to evacuate by elevator to evacuate by stairs is: , Indicates the highest floor where people who need to evacuate by elevator are located; The total evacuation time of the stairs is , ; Calculating Elevator Evacuation Time Including: The time taken for elevator j to travel between the ground floor and the designated refuge floor is: , is the height of the nth floor, is the number of refuge floors where elevator j stops, is the elevator running acceleration, It is the rated speed of the elevator; The total time required for elevator j to travel between the ground floor and the designated refuge floor is: , is the maximum load capacity of elevator j, is the crowding coefficient of entering and exiting the elevator, is the width of elevator j, is the flow rate per unit width in and out of elevator j, The door opening time required for the elevator to go / return once; Total time for elevator j to evacuate It is expressed as: , is the number of refuge floors where elevator j stops, The number of people who choose elevator j for evacuation on the nth floor, is the maximum load capacity of elevator j; The total evacuation time of the elevator is , is the number of elevators.

2. The method for quickly calculating the evacuation time of people in a super high-rise building according to claim 1 is characterized in that: Calculating stair evacuation time When evacuating from stairs, it is abstracted as layered evacuation, that is, evacuating layer by layer from bottom to top. When evacuating the current layer, all the layers above are in a waiting state.

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