CN103063808A - Assessment method and system for building damage after fire - Google Patents
Assessment method and system for building damage after fire Download PDFInfo
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- CN103063808A CN103063808A CN2012105676971A CN201210567697A CN103063808A CN 103063808 A CN103063808 A CN 103063808A CN 2012105676971 A CN2012105676971 A CN 2012105676971A CN 201210567697 A CN201210567697 A CN 201210567697A CN 103063808 A CN103063808 A CN 103063808A
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Abstract
The invention provides an assessment method for building damage after fire, and the assessment method for the building damage after the fire includes the following steps: 1. collecting data of a scene of the fire, 2. modeling the scene of the fire according to the data of the scene of the fire and carrying out fire simulation in the scene of the fire for achieving fire simulation results, 3. analyzing the fire simulation results, 4. establishing a finite element model, and adding second data to the finite element model for finite element analysis so as to obtain finite element analysis results, 5. carrying out safety assessment for the finite element results. Provided is a corresponding system. The assessment method for the building damage after the fire can be widely used for the fire reappearance and the practice of the safety design of the building structure after the fire, not only can improve the accuracy and reliability of the reappearance of the building fire, but also can greatly save time and cost for the reappearance of the building fire and the safety design of the structure. Therefore, the assessment method for the building damage after the fire has an important theoretical guiding significance and a practical value.
Description
Technical field
The present invention relates to a kind of numerical simulation fire system, numerical simulation assessment of impairments system behind especially a kind of fire is specifically related to build the assessment of impairments method and system behind the fire.
Background technology
In recent years, building fire occurs frequent, not only causes great personnel and property loss, also causes the great damage of fabric structure, even caves in.If to accident building safety evaluation behind the fire, will not can not determine and whether can continue to use, also will take a large amount of manpower financial capacities of waste if directly rebuild or remove, therefore, the building assessment of impairments is more and more important behind the fire.
Fire simulation software is more and more ripe, and it reproduces whole fire process and the gas flow of fire process changes and can detect, but also has a lot of defectives, and the structural behaviour test that fire is built also is not very perfect.Mainly there is following defective:
The first, can not make a determination to the variation of building structure internal stress.
The second, can not make a determination to the building microdeformation.
Although the Fire-damaged assessment has certain development, there is following problem in traditional lesion assessment:
The first, may cause the secondary physical damage to building structure.
The second, can not make relatively accurate assessment to the monolithic architecture structural behaviour.
Summary of the invention
Above defective and problem for prior art, build the assessment of impairments method and system after the object of the present invention is to provide a kind of science, reasonable, efficient fire, this system can be widely used in the practice of the safe design behind building fire reproduction and the building structure fire, and building fire reproduces and time and the funds of structural safety design greatly to save.
The present invention proposes to build the assessment of impairments system behind a kind of Fire-damaged integral body and the internal performance fire, fast building performance behind the fire is made evaluation.
According to an aspect of the present invention, provide building assessment of impairments method behind a kind of fire, comprise the steps:
Step 1: the scene of fire data are gathered, and the scene of fire data comprise structured data and object putting position data;
Step 2:, fire disaster simulation is carried out in the scene of fire obtain the fire disaster simulation result the scene of fire modeling according to described scene of fire data, realize fire reconstruction, and temperature, cigarette, the gas of whole fire process are calculated;
Step 3: the fire disaster simulation result is carried out analyzing and processing, particularly, the whole fire time is divided into a plurality of time periods, obtain the first data, wherein, described the first data have been put down in writing the maximum temperature of each field position within each described time period; According to described the first data acquisition the second data, wherein, described the second data have been put down in writing the maximum temperature of each described field position in each described time period;
Step 4: set up finite element model, described the second data are applied to carry out finite element analysis in the finite element model and obtain the results, wherein, described analysis result comprises the situation of change in stress, strain and temperature field;
Step 5: if be safety according to building lesion assessment result behind the fire of the results in the described step 4, then stop to analyze; If be dangerous according to building lesion assessment result behind the fire of the results in the described step 4, if the time span of described time period equals minimum time span threshold value, then stop to analyze, otherwise, then returning described step 3 continues to carry out, wherein, the each execution of described step 3 all is reclassified as the whole fire time the less time period of time span.
Preferably, described the first data are that the time ordinate is the chart of temperature for the horizontal ordinate for each described field position.
Preferably, described the second data are that the position ordinate is the chart of temperature for the horizontal ordinate for each described time period.
According to another aspect of the present invention, provide building assessment of impairments system behind a kind of fire, comprise such as lower device:
The fire simulation system module, be used for according to the scene of fire data the scene of fire modeling, fire disaster simulation is carried out in the scene of fire obtain the fire disaster simulation result, realize fire reconstruction, and temperature, cigarette, the gas of whole fire process calculated, wherein, described scene of fire data comprise structured data and object putting position data;
Data processing module is used for the fire disaster simulation result is carried out analyzing and processing, particularly, the whole fire time is divided into a plurality of time periods, obtains the first data, and wherein, described the first data have been put down in writing the maximum temperature of each field position within each described time period; According to described the first data acquisition the second data, wherein, described the second data have been put down in writing the maximum temperature of each described field position in each described time period;
Finite element analysis module is used for that described the second data are applied to finite element model and carries out finite element analysis and obtain the results, and wherein, described analysis result comprises the situation of change in stress, strain and temperature field;
The Fire-damaged evaluation module is used for carrying out safety assessment according to described finite element result, wherein: if be safety according to building lesion assessment result behind the fire of described the results, then stop to analyze; If be dangerous according to building lesion assessment structure behind the fire of described the results, if the time span of described time period equals minimum time span threshold value, then stop to analyze, otherwise, then triggering described data processing module continues to carry out, wherein, the each execution of described data processing module all is reclassified as the whole fire time the less time period of time span.
Preferably, described the first data are that the time ordinate is the chart of temperature for the horizontal ordinate for each described field position.
Preferably, described the second data are that the position ordinate is the chart of temperature for the horizontal ordinate for each described time period.
Compared with prior art, the present invention has following beneficial effect:
(1) in the process for the treatment of temperature, considered next step finite element analysis, finally has been organized in certain time period that i.e. certain load step in the finite element analysis, the temperature of corresponding position is convenient to the computational analysis of finite element analysis module.
(2) when checking the results, judge fast building safety situation behind the fire according to concrete self character and " concrete character and concrete damage country evaluation criteria ", and use and judge that circulating decision method comes building behind the fire is carried out safe judgement, rational result stops to analyze until obtain relatively accurately.
(3) can be applied to explode at public safety field and building field, the shock wave such as earthquake is to the numerical simulation of building structure damage.
(4) can be widely used in that building fire reproduces and the building structure fire after the practice of safe design in, not only can improve accuracy and reliability that building fire reproduces, can also greatly save building fire reproduces and structural safety designs time and funds.Therefore, have important theory directive significance and practical value.
Description of drawings
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 is the integral module synoptic diagram according to building assessment of impairments system behind the fire provided by the invention;
Fig. 2 is the concrete structure synoptic diagram of data processing module shown in Figure 1.
Embodiment
The present invention is described in detail below in conjunction with specific embodiment.Following examples will help those skilled in the art further to understand the present invention, but not limit in any form the present invention.Should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
Fig. 1 illustrates each main modular of building assessment of impairments system behind the described fire, and particularly, at first, the fire simulation system module carries out simulation reconstruction according to the data of collection in worksite to fire, and obtains the temperature map of each position.Then data processing module is processed the temperature map that the fire simulation system module obtains, and finite element analysis module is carried out computing to the temperature map handled well, judges fast building safety situation behind the fire by the Fire-damaged evaluation module at last.
Further specify data processing module below in conjunction with Fig. 2.Data processing module is further processed the temperature data that the fire simulation system module obtains, particularly, at first in the excel form, the maximum temperature of each time period is extracted, temperature after the arrangement needs further arrangement, and it is that the time ordinate is the chart of temperature that the temperature of each position is organized into horizontal ordinate; Then continue all temperature maps are put in order, be organized into the temperature map of each time period, the horizontal ordinate that is organized into each time period is that the position ordinate is the chart of temperature, so that the further computing of finite element analysis module.
Below in conjunction with Fig. 1 and Fig. 2 whole assessment system is summarized.Described assessment system at first carries out on-site land survey to whole fire scenario, whole fire scenario object layout is made an accurate survey record, be convenient to follow-up fire simulation and finite element analysis, then building behind the fire is carried out fire simulation, realize fire reconstruction and various cigarette, the isocyatic measurement of gas, temperature in the fire simulation can be with the formal output of excel form, data are carried out the first time to be processed, fire process is divided into several time periods, extract the maximum temperature of each time period of correspondence position, then continuing that thermometer is carried out the second time processes, be organized into the maximum temperature of the correspondence position of each time period, then carry out finite element modeling, the accurate correspondence of temperature measured in the fire disaster simulation is applied in the finite element model, analyze, the stress that obtains, the situation of change in strain and temperature field is analyzed, carry out lesion assessment according to " concrete character and concrete damage country evaluation criteria ", if safety then stop to analyze, if dangerous then repeat above-mentioned excel list data and process and finite element analysis, repartition load step time, in view of present computing power and crash analysis efficient, the minimum time load step is divided into 1 second, until legitimate result appears in the building lesion assessment
It below is laundry, Shanghai City fire disaster analyzing process.
Fire failure is carried out the field investigation record, 500 seconds whole fire time, carry out the fire reconstruction simulation, obtain the cigarette of whole fire process, the temperature variation of gas concentration change and whole fire process, fire process is divided into 20 load steps, each 25 second time of load step, extract the maximum temperature that fire simulation obtains each time period in temperature field, the maximum temperature of each time period is applied in the finite element model, form with the load step is analyzed fire failure, obtains the ess-strain situation, then fire failure is carried out lesion assessment, degree of injury sequentially comprises the concrete floor assessment, the beam assessment, the post assessment, and according to stress, strained situation is further assessed evaluation to the one-piece construction performance, building structure is in a safe condition after judging at last this fire, can continue to use.
More than specific embodiments of the invention are described.It will be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or modification within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (6)
1. build the assessment of impairments method behind a fire, it is characterized in that, comprise following rapid:
Step 1: the scene of fire data are gathered, and the scene of fire data comprise structured data and object putting position data;
Step 2:, fire disaster simulation is carried out in the scene of fire obtain the fire disaster simulation result the scene of fire modeling according to described scene of fire data, realize fire reconstruction, and temperature, cigarette, the gas of whole fire process are calculated;
Step 3: the fire disaster simulation result is carried out analyzing and processing, particularly, the whole fire time is divided into a plurality of time periods, obtain the first data, wherein, described the first data have been put down in writing the maximum temperature of each field position within each described time period; According to described the first data acquisition the second data, wherein, described the second data have been put down in writing the maximum temperature of each described field position in each described time period;
Step 4: set up finite element model, described the second data are applied to carry out finite element analysis in the finite element model and obtain the results, wherein, described analysis result comprises the situation of change in stress, strain and temperature field;
Step 5: if be safety according to building lesion assessment result behind the fire of the results in the described step 4, then stop to analyze; If be dangerous according to building lesion assessment result behind the fire of the results in the described step 4, if the time span of described time period equals minimum time span threshold value, then stop to analyze, otherwise, then returning described step 3 continues to carry out, wherein, the each execution of described step 3 all is reclassified as the whole fire time the less time period of time span.
2. building assessment of impairments system behind the fire according to claim 1 is characterized in that described the first data are that the time ordinate is the chart of temperature for the horizontal ordinate for each described field position.
3. building assessment of impairments system behind the fire according to claim 1 is characterized in that described the second data are that the position ordinate is the chart of temperature for the horizontal ordinate for each described time period.
4. build the assessment of impairments system behind a fire, it is characterized in that, comprise such as lower device:
The fire simulation system module, be used for according to the scene of fire data the scene of fire modeling, fire disaster simulation is carried out in the scene of fire obtain the fire disaster simulation result, realize fire reconstruction, and temperature, cigarette, the gas of whole fire process calculated, wherein, described scene of fire data comprise structured data and object putting position data;
Data processing module is used for the fire disaster simulation result is carried out analyzing and processing, particularly, the whole fire time is divided into a plurality of time periods, obtains the first data, and wherein, described the first data have been put down in writing the maximum temperature of each field position within each described time period; According to described the first data acquisition the second data, wherein, described the second data have been put down in writing the maximum temperature of each described field position in each described time period;
Finite element analysis module is used for that described the second data are applied to finite element model and carries out finite element analysis and obtain the results, and wherein, described analysis result comprises the situation of change in stress, strain and temperature field;
The Fire-damaged evaluation module is used for carrying out safety assessment according to described finite element result, wherein: if be safety according to building lesion assessment result behind the fire of described the results, then stop to analyze; If be dangerous according to building lesion assessment structure behind the fire of described the results, if the time span of described time period equals minimum time span threshold value, then stop to analyze, otherwise, then triggering described data processing module continues to carry out, wherein, the each execution of described data processing module all is reclassified as the whole fire time the less time period of time span.
5. building assessment of impairments system behind the fire according to claim 4 is characterized in that described the first data are that the time ordinate is the chart of temperature for the horizontal ordinate for each described field position.
6. building assessment of impairments system behind the fire according to claim 4 is characterized in that described the second data are that the position ordinate is the chart of temperature for the horizontal ordinate for each described time period.
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| CN104269010A (en) * | 2014-09-22 | 2015-01-07 | 广州中国科学院工业技术研究院 | Method and system for warning fire risk in monitoring area |
| CN106093363A (en) * | 2016-06-01 | 2016-11-09 | 复旦大学 | A kind of high-density polyethylene material is by the safety evaluation method after fire |
| CN107121047A (en) * | 2017-05-09 | 2017-09-01 | 天津市交通科学研究院 | A kind of fire-damaged concrete internal temperature field assay method |
| CN107958135A (en) * | 2017-11-23 | 2018-04-24 | 平安科技（深圳）有限公司 | Event evaluation data display method, device, computer equipment and storage medium |
| CN108334686A (en) * | 2018-01-25 | 2018-07-27 | 上海市建筑科学研究院 | A kind of Concrete after Fire component load-bearing capability assessment method |
| CN111581697A (en) * | 2020-07-02 | 2020-08-25 | 江苏现代工程检测有限公司 | Bridge detection information management method and system based on BIM |
| CN113129545A (en) * | 2021-04-23 | 2021-07-16 | 北京安普路安全技术有限公司 | System for kitchen fire data recording and analyzing |
| CN113158293A (en) * | 2021-03-05 | 2021-07-23 | 重庆交通大学 | Building safety performance evaluation method and device |
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Cited By (15)
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| CN103336861B (en) * | 2013-06-09 | 2016-05-04 | 上海交通大学 | The auxiliary investigating system of sootiness carbon black vestige fire and method |
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| CN106093363B (en) * | 2016-06-01 | 2018-11-13 | 复旦大学 | A kind of safety evaluation method of high-density polyethylene material after by fire |
| CN107121047B (en) * | 2017-05-09 | 2019-09-13 | 天津市交通科学研究院 | A kind of fire-damaged concrete internal temperature field measuring method |
| CN107121047A (en) * | 2017-05-09 | 2017-09-01 | 天津市交通科学研究院 | A kind of fire-damaged concrete internal temperature field assay method |
| CN107958135A (en) * | 2017-11-23 | 2018-04-24 | 平安科技（深圳）有限公司 | Event evaluation data display method, device, computer equipment and storage medium |
| CN108334686A (en) * | 2018-01-25 | 2018-07-27 | 上海市建筑科学研究院 | A kind of Concrete after Fire component load-bearing capability assessment method |
| CN108334686B (en) * | 2018-01-25 | 2021-10-15 | 上海市建筑科学研究院 | Method for evaluating bearing capacity of concrete member after fire |
| CN111581697A (en) * | 2020-07-02 | 2020-08-25 | 江苏现代工程检测有限公司 | Bridge detection information management method and system based on BIM |
| CN111581697B (en) * | 2020-07-02 | 2023-01-24 | 江苏现代工程检测有限公司 | Bridge detection information management method and system based on BIM |
| CN113158293A (en) * | 2021-03-05 | 2021-07-23 | 重庆交通大学 | Building safety performance evaluation method and device |
| CN113158293B (en) * | 2021-03-05 | 2022-06-17 | 重庆交通大学 | Building safety performance evaluation method and device |
| CN113129545A (en) * | 2021-04-23 | 2021-07-16 | 北京安普路安全技术有限公司 | System for kitchen fire data recording and analyzing |
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Application publication date: 20130424 |