CN104361240B - After-fire steel structure damage evaluation system based on mobile wireless technology - Google Patents
After-fire steel structure damage evaluation system based on mobile wireless technology Download PDFInfo
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Abstract
The invention relates to an after-fire steel structure damage evaluation system based on a mobile wireless technology. The system comprises an after-fire steel structure damage database, an after-fire steel structure residue carrying force calculating system, an after-fire steel structure safety performance authenticating system, an in-site data fast collecting system and a wireless communication transmission system, wherein the after-fire steel structure damage database, the after-fire steel structure residue carrying force calculating system and the after-fire steel structure safety performance authenticating system are built on the basis of a background server, the in-site data fast collecting system is built on the basis of mobile equipment, and the wireless communication transmission system realizes the wireless two-way connection of the in-site data fast collecting system and the background server. The after-fire steel structure damage evaluation system has the advantages that the in-site component data can be fast collected, in addition, each stage of indexes are subjected stage-by-stage recurrence calculation through the damage database, the residue carrying force calculation system and the safety performance authenticating system via quantitative analysis and qualitative analysis, the after-fire steel structure damage and the safety grade are automatically determined, and the after-fire steel structure damage and safety evaluation results are formed.
Description
Technical field
The invention belongs to structural steelwork technical field, it is related to one kind and directly applies to the detection of concrete on fire steel construction or identify
The concrete on fire steel construction lesion assessment system based on mobile wireless technology.
Background technology
Steel construction because its from heavy and light, intensity is high, anti-seismic performance is good, industrialization degree is high, short construction period, mixed economy effect
The advantages of benefit is good, has been widely applied in building structure.However, because the material property of steel is more quick on temperature impact
Sense, once there is fire, steel construction gently then destroys, weight then caves in.For the steel construction not caved in by fire, its main stress structure
The steel yield strength of part has different degrees of reduction, but typically not over 20%, the Residual Load Bearing Capacity of single component is also
It is very big.So for the steel construction not caved in by fire, the general use recovering building by suitable reinforcement measure
Function, often optimal disposal method, the economic benefit thus brought is the most significant.Therefore, to concrete on fire steel construction work
Cheng Jinhang lesion assessment is significant, has a far reaching influence.
Domestic at present for concrete on fire steel structural damage detection, safety evaluation, there is no the recognized standardization theoretical and side
Method is although have《Fire-damaged building structure standard of perfection》(CECS 252:2009) can for reference, but because it is related to steel construction
Content is on the low side, not comprehensive, mainly relies on expertise to judge in practice.
Concrete on fire steel structural damage detection, safety evaluation generally comprise herein below：
(1) fire scene temperature determines.The premise of concrete on fire steel structural damage detection is to determine fire scene temperature, current fire scene temperature
Mainly the presumption of with good grounds ISO-834 standard heating curve, estimate according to fire remnants presumption, according to the micro-analysis of steel,
According to material residues strength estimation, according to the presumption of steel hardness, according to the presumption of metal surface thermo-color, according to the impaired feature of component
Presumption etc. is several.In above method, estimated according to ISO-834 standard heating curve, belong to theoretical reckoning, practice have shown that error is relatively
Greatly；There is common issue in additive method, that is, be both needed to go deep into the necessary material information of scene of fire extraction, one side scene of a fire situation is multiple
Miscellaneous, operating difficulties, on the other hand also brings potential safety hazard for testing staff.
(2) concrete on fire steel structure member non-destructive tests.Usually, concrete on fire steel structure member non-destructive tests are divided into outward appearance to damage
Wound, deformation, three aspects of Residual Load Bearing Capacity.After fire occurs, scene of a fire inner case is complicated, and structure has the wind that collapses at any time
Danger, therefore, carries out accurate evaluation to component cosmetic injury, deformation, difficulty is larger, work on the spot amount is heavy.In addition, fire
Steel structure member Residual Load Bearing Capacity there is no any specification to give clear stipulaties at present afterwards, simply exists《Fire-damaged building structure is identified
Standard》(CECS252:2009) faintly mention in " drag of concrete on fire structural elements, consider fire effect to structural material
After performance, the adverse effect of structure tension performance, check analysis can be carried out according to the regulation of current designs codes and standards ", real
Trample middle shortage unified standard.
(3) concrete on fire steel construction safety evaluation.《Fire-damaged building structure standard of perfection》(CECS252:2009) for
Concrete on fire steel structure member safety evaluation dictates, but for structure overall security grading, this standard without reference to.By
To the damage of steel construction, there is particularity and uncertainty in fire, therefore, steel construction overall security had been estimated
Cheng Zhong, on-site data gathering mostly is manual record, and intensity is big, fault-tolerance is relatively low, and later stage assessment lacks unified standard, calculates analysis
Judge often with artificial subjective experience it is difficult to form science, unified evaluation result.
Content of the invention
In order to solve above-mentioned technical problem, the concrete on fire steel construction that the present invention proposes based on mobile wireless technology damages
Assessment system.
The present invention is realized in：Based on the concrete on fire steel construction lesion assessment system of mobile wireless technology, include：
Field data Fast Acquisition System, for gathering concrete on fire steel construction scene component data；
The concrete on fire steel construction damage data storehouse set up based on background server, concrete on fire steel construction Residual Load Bearing Capacity are calculated
System and concrete on fire steel construction security authentication system；
Wireless communication transmission system, makes described field data Fast Acquisition System and described background server phase wireless telecommunications
Connect, the concrete on fire steel construction scene component data syn-chronization conversion identification of described field data Fast Acquisition System collection is silent
It is sent to described concrete on fire steel construction damage data storehouse after the information recognized, and automatically carries out concrete on fire steel construction by pre-setting method and remain
Remaining bearing capacity calculation, to remaining element bearing capacity security grading and concrete on fire steel construction security authentication, automatically determine fire
Steel construction degree of injury, safe class after calamity.
Wherein, described concrete on fire steel construction damage data storehouse includes：
The impaired property data base of component fireproof jointing sheath, and corresponding damage is determined according to the impaired feature of component fireproof jointing sheath
Grade；
Component residual deformation and tear property data base, and corresponding damage is determined to tear feature according to component residual deformation
Grade；
Component partial flexing and distortion character database, and corresponding damage is determined according to component partial flexing and distortion character
Grade；
Component bulk deformation property data base, and corresponding impairment scale is determined according to component bulk deformation feature；
The impaired property data base of connecting node, is torn with fire resistant coating, connecting plate residual deformation and tear, weld seam according to application
Split and set up with bolt sliding and three subitems of deformation, and corresponding impairment scale is determined according to the impaired feature of component connecting node；
Concrete on fire steel construction micro-analysis database, according to steel Widmannstatten structure, martensite metallographic situation of change after overdoing
Set up, and corresponding impairment scale is determined according to steel Widmannstatten structure, martensite metallographic variation characteristic after overdoing；
Fire scene temperature deduction system, divides according to the microcosmic of ISO834 standard heating curve, fire remnants feature, steel
Analysis, material residues intensity, steel hardness, metal surface thermo-color, the impaired feature of component are set up；
Described impairment scale is divided into II a, II b, III, IV level Four.
Described concrete on fire steel construction Residual Load Bearing Capacity computing system, by introducing in existing steel structure member check formula
The strength reduction factor η of concrete on fire steelT, fire rear part partial safety factor for resistance γTSet up, for carrying out axle by pre-setting method
The heart draws, presses component strength checking computations, axis compression member Stability Checking, single shaft flexural member strength checking, single shaft flexural member
Stability Checking, stretch bending, bending component strength checking, bending component Stability Checking, and according to checking computations structure to concrete on fire steel
Structure residual element bearing capacity security is graded by pre-setting method, is divided into B, C, D three-level.
Described concrete on fire steel construction security authentication system, for calculating according to described concrete on fire steel construction Residual Load Bearing Capacity
System is true to the rating result of concrete on fire steel construction Residual Load Bearing Capacity security and described concrete on fire steel construction damage data storehouse
Fixed corresponding impairment scale carries out identification grading to concrete on fire steel construction security.
The calculation criterion of described concrete on fire steel construction security authentication grading is as follows：
(1) concrete on fire steel structure member safety grades divide II a, II b, III, IV level Four；
(2) concrete on fire steel construction safety grades are divided into B, C, D three-level；
(3) concrete on fire steel construction safety grades, each component security concentrated by important component collection and secondary member etc.
Level percentage determines：Described important component refers to post, beam；Described secondary member refers to other components in addition to described post, beam；
Described important component collection rating scale is as follows：
B level：Component is concentrated and is not contained IV grade of component, can contain III grade of component and content is not more than 20%；
C level：Component is concentrated and is not more than 50% containing III grade of component and content, or containing IV grade of component and vertical member content is many
It is no less than 15% in 10% or horizontal member content；
D level：Component is concentrated and is more than 50% containing III grade of component and content, or containing IV grade of component and vertical member content is no less than
10% or horizontal member content be no less than 15%；
Described secondary member collection rating scale is as follows：
B level：Component is concentrated and is not contained IV grade of component, can contain III grade of component and content is not more than 25%；
C level：Component is concentrated and is not more than 50% containing III grade of component and content, or containing IV grade of component and content is less than 20%；
D level：Component is concentrated and is more than 50% containing III grade of component and content, or containing IV grade of component and content is no less than 20%；
Wherein, the safety grades of concrete on fire steel construction, are determined by the lowest class that important component in identification unit is concentrated；
When identifying lower than the minimum safe grade of important component collection two grades of the minimum safe grade of secondary member collection in unit, its
Safety grades can be determined by the minimum safe grade fall one-level of important component collection.
Described field data Fast Acquisition System be used for the text message form of systemic presupposition and or picture format extract
Or collection concrete on fire field data, described concrete on fire steel construction is sent in real time by described wireless communication transmission system and damages number
According to storehouse, make described concrete on fire steel construction damage data storehouse and concrete on fire scene component data syn-chronization.
Described concrete on fire field data includes fire remnants feature, component surface is damaged, deformation of member key message.
Described field data Fast Acquisition System includes on-site data gathering device and mobile device, described mobile device
With described on-site data gathering device two-way communication link, for will collection systemic presupposition text message form and or image
Form is sent to described on-site data gathering device, then by described on-site data gathering device by described wireless communication transmission system
System is sent to described concrete on fire steel construction damage data storehouse.
The concrete on fire steel construction lesion assessment system based on mobile wireless technology for the present invention, it is possible to achieve concrete on fire scene number
According to Quick Acquisition, and be sent to concrete on fire steel construction damage data storehouse, calculated by described concrete on fire steel construction Residual Load Bearing Capacity
System and concrete on fire steel construction security authentication system, according to the live component data of described transmission, are entered by pre-setting method automatically
Row concrete on fire steel construction Residual Load Bearing Capacity calculates, and concrete on fire steel construction Residual Load Bearing Capacity security is graded and concrete on fire
Steel construction security authentication, automatically determines concrete on fire steel construction degree of injury, safe class it is achieved that quickly determining concrete on fire steel
Structural damage degree, safe class.
Brief description
Fig. 1 is the illustraton of model of the concrete on fire steel construction lesion assessment system based on mobile wireless technology that the present invention provides；
Fig. 2 show the method schematic diagram of field data Fast Acquisition System gathered data.
Specific embodiment
Below, in conjunction with example, the substantive distinguishing features of the present invention and advantage are further described, but the present invention not office
It is limited to listed embodiment.
Shown in Figure 1, the concrete on fire steel construction lesion assessment system based on mobile wireless technology of the present invention, including
Have：
Field data Fast Acquisition System, for gathering concrete on fire steel construction scene component data；
The concrete on fire steel construction damage data storehouse set up based on background server, concrete on fire steel construction Residual Load Bearing Capacity are calculated
System and concrete on fire steel construction security authentication system；
Wireless communication transmission system, makes described field data Fast Acquisition System and described background server phase wireless telecommunications
Connect, the concrete on fire steel construction scene component data syn-chronization conversion identification of described field data Fast Acquisition System collection is silent
It is sent to described concrete on fire steel construction damage data storehouse after the information recognized, and automatically carries out concrete on fire steel construction by pre-setting method and remain
Remaining bearing capacity calculation, to remaining element bearing capacity security grading and concrete on fire steel construction security authentication, automatically determine fire
Steel construction degree of injury, safe class after calamity.
The present invention passes through wireless communication transmission system by field data Fast Acquisition System will be live for the concrete on fire gathering
Component data syn-chronization is sent to described concrete on fire steel construction damage data storehouse after being converted to the discernible data form of system, by fire
After calamity, steel construction Residual Load Bearing Capacity computing system and concrete on fire steel construction security authentication system are according to the concrete on fire steel gathering
Structure scene component data, carries out concrete on fire steel construction Residual Load Bearing Capacity by pre-setting method and calculates, remaining to concrete on fire steel construction
Bearing capacity is graded and concrete on fire steel construction security authentication, determines concrete on fire steel construction degree of injury, safe class, real
Show the intelligent rapid evaluation to concrete on fire steel construction, and improve accuracy and the accuracy of evaluation structure.
Described concrete on fire steel construction damage data storehouse includes：
1) the impaired property data base of component fireproof jointing sheath, this impaired property data base of component fireproof jointing sheath is according to component
The impaired feature of fireproof jointing sheath determines corresponding impairment scale, such as II a, II b, III, IV etc., part fireproof jointing sheath damaged grade
Determine that standard refers to as shown in table 1 below carrying out：
Table 1
2) component residual deformation and tear property data base, this component residual deformation and tear property data base are according to component
Residual deformation determines corresponding impairment scale with tearing impaired feature, such as II a, II b, III, IV etc., and impairment scale determines that standard can
With reference to shown in table 2 below；
Table 2
3) component partial flexing or distortion character database, this component partial flexing or distortion character database root are according to component
Local buckling or the impaired feature of distortion determine corresponding impairment scale, such as II a, II b, III, IV etc., and impairment scale determines that standard can
With reference to shown in table 3 below；
Table 3
4) component bulk deformation property data base, this component bulk deformation property data base is impaired according to component bulk deformation
Feature determines corresponding impairment scale, such as II a, II b, III, IV etc., and impairment scale determines that standard refers to shown in table 4 below；
Table 4
5) the impaired property data base of connecting node, the impaired property data base of this connecting node according to application and fire resistant coating,
Connecting plate residual deformation is set up with tear, weld seam tear and bolt sliding and three subitems of deformation, and determines corresponding damage etc.
Level II a, II b, III, IV etc., as shown in table 5；
Table 5
(6) concrete on fire steel construction micro-analysis database, this concrete on fire steel construction micro-analysis database root is according to after overdoing
The metallographic situation of change such as steel Widmannstatten structure, martensite is set up, and determines corresponding impairment scale II a, II b, III, IV etc., such as
Shown in table 6；
Table 6
(7) fire scene temperature deduction system, this fire scene temperature deduction system is residual according to ISO-834 standard heating curve, the scene of a fire
Thing feature, the micro-analysis of steel, material residues intensity, steel hardness, metal surface thermo-color, the impaired feature of component is stayed to build
Vertical, for estimating fire scene temperature according to above-mentioned feature, concrete presumption method can realized using existing presumption method.
Described concrete on fire steel construction Residual Load Bearing Capacity computing system, by introducing in traditional steel structure member check formula
The strength reduction factor η of concrete on fire steelT, fire rear part partial safety factor for resistance γTSet up, by pre-setting method, axle center drawn, press
Component strength checking computations, axis compression member Stability Checking, single shaft flexural member strength checking, single shaft flexural member stability are tested
Calculation, stretch bending, bending component strength checking, bending component Stability Checking, and to concrete on fire steel construction Residual Load Bearing Capacity security
Grade is graded by pre-setting method, is such as graded it is considered to structure safety by tri- ranks of B, C, D, no matter which kind of situation is equal
Do not comment A level.The specific formula for calculation of every checking computations is as follows：
(1) intensity of concrete on fire axial tension (pressure) component should check as the following formula：
(2) stability of concrete on fire axis compression member should check as the following formula：
(3) intensity of concrete on fire flexural member should check as the following formula：
(4) resistance to overturning of concrete on fire flexural member should check as the following formula：
(5) intensity of concrete on fire stretch bending or bending component should check as the following formula：
(6) stability of concrete on fire bending component should check as the following formula：
1) bend around strong axle x-axis：
N'Ex=π2EA/(1.1λx 2)
2) bend around weak axle y-axis：
N'Ey=π2E*A/(1.1λy 2)
In above-mentioned formula, each letter implication is respectively：
The axial tension of N fire rear part or axial compressive force design load (unit：kN)；
AnNet cross-sectional area (the unit of component：mm2)；
ηTThe strength reduction factor of concrete on fire steel；
Strength failure criterion (the unit of steel under f normal temperature：N/mm2)；
Gross cross-sectional area (the unit of A component：mm2)；
E steel elastic modelling quantity；
The coefficient of stability of concrete on fire steel axially loaded compression members；
Mx、MyMoment-curvature relationship (unit around x-axis with around y-axis at the same section of concrete on fire flexural member：kN.m)；
Wnx、WnyNet section modulus (unit to x-axis and y-axis：mm3)；
γx、γyIt is respectively the section Plastics Development coefficient around strong bending shaft with around weak bending shaft；
Wx、WyThe component gross cross-sectional modulus (unit determining by compression fibre：mm3)；
The integral stability factor of concrete on fire flexural steel member；
N'Ex、N'EyIt is respectively the parameter around strong bending shaft with around weak bending shaft for the concrete on fire；
λx、λyIt is respectively the slenderness ratio to strong axle and weak axle；
βmx、βmyEquivalent moment factor in Moment plane；
βtx、βtyThe out-of-plane equivalent moment factor of Moment；
The coefficient of stability of concrete on fire steel axially loaded compression members, corresponds respectively to strong axle unstability and weak axle loses
Surely；
Concrete on fire uniformly bends the coefficient of stability of flexural steel member, corresponds respectively to strong axle unstability and weak
Axle unstability；
η section affects coefficient.
Described concrete on fire steel construction security authentication system, according to described concrete on fire steel construction Residual Load Bearing Capacity computing system
Calculating process after obtain damaging number with regard to the rating result of remaining element bearing capacity safety grades and concrete on fire steel construction
Carry out the grading of concrete on fire steel construction security authentication according to the steel construction impairment scale that storehouse determines.
The simplification calculation criterion of described concrete on fire steel construction security authentication grading is as follows：
(1) concrete on fire steel structure member safety grades be II a, II b, III, IV it is considered to structure safety, no matter which kind of feelings
Condition does not all comment I grade；
(2) concrete on fire steel construction safety grades be B, C, D level it is considered to structure safety, no matter which kind of situation does not all comment A
Level；
(3) concrete on fire steel construction safety grades, each component security concentrated by important component collection and secondary member etc.
Level percentage determines：Described important component refers to post, beam；Described secondary member refers to other components in addition to described post, beam；
Wherein, described important component collection rating scale is as follows：
B level：Component is concentrated and is not contained IV grade of component, can contain III grade of component and content is not more than 20%；
C level：Component is concentrated and is not more than 50% containing III grade of component and content, or containing IV grade of component and content to be less than 10% (perpendicular
To component) or 15% (horizontal member)；
D level：Component is concentrated and is more than 50% containing III grade of component and content, or containing IV grade of component and content to be no less than 10% (perpendicular
To component) or 15% (horizontal member)；
Described secondary member collection rating scale is as follows：
B level：Component is concentrated and is not contained IV grade of component, can contain III grade of component and content is not more than 25%；
C level：Component is concentrated and is not more than 50% containing III grade of component and content, or containing IV grade of component and content is less than 20%；
D level：Component is concentrated and is more than 50% containing III grade of component and content, or containing IV grade of component and content is no less than 20%；
Wherein, the safety grades of concrete on fire steel construction, are determined by the lowest class that important component in identification unit is concentrated；
When identifying lower than the minimum safe grade of important component collection two grades of the minimum safe grade of secondary member collection in unit, its
Safety grades can be determined by the minimum safe grade fall one-level of important component collection.
As shown in Fig. 2 described concrete on fire steel construction field data Fast Acquisition System utilizes mobile communication equipment to set up, bag
Include on-site data gathering device and mobile communication equipment (as smart mobile phone), described mobile communication equipment and described field data
Harvester is connected, and can pass through text input method, or image format gathers the damage data of concrete on fire steel construction scene component,
Number transmission is damaged to described background server concrete on fire steel construction by described wireless transmitting system.
When being gathered with text message form, the key such as collection fire remnants feature, component surface damage, deformation of member
Information, inputs mobile device by man-machine interaction, can adopt preset standard language format, inputs the damage enumerated in above-mentioned table 1～5
Send out after hindering feature；
When gathering with image format, jpeg image format, collection in worksite fire remnants feature, component surface can be adopted
The key messages such as damage, the deformation of member.
Wherein, when data acquisition being carried out with text message form, picture format, can run simultaneously, also can independent operating.
The data of described concrete on fire steel construction field data Fast Acquisition System collection in worksite, by the two-way biography of mobile wireless
Defeated system is sent to concrete on fire steel construction in real time and damages number, makes the concrete on fire steel construction damage data storehouse of background server terminal
Data synchronizes.
Described wireless (two-way) telecommunication transmission system, in the live component data that transmission collection comes, enters row information ratio automatically
Right, unification is by default text message form, image information format conversion is the recognizable information given tacit consent to or the program that is converted into is write from memory
It is sent to described background server terminal concrete on fire steel construction after the recognizable information of the text formatting recognized and damages number database, be
System automatically determines concrete on fire steel construction degree of injury, safe class after setting initial parameter.
The concrete on fire steel construction lesion assessment system based on mobile wireless technology for the present invention, it is possible to achieve concrete on fire scene number
According to Quick Acquisition, and be wirelessly transmitted to concrete on fire steel construction damage data storehouse, by described concrete on fire steel construction Residual Load Bearing Capacity
Computing system and concrete on fire steel construction security authentication system, according to the live component data of described transmission, by pre-setting method
Carry out concrete on fire steel construction Residual Load Bearing Capacity to calculate, concrete on fire steel construction Residual Load Bearing Capacity is graded and concrete on fire steel knot
Structure security authentication, determines concrete on fire steel construction degree of injury, safe class it is achieved that quickly determining that concrete on fire steel construction damages
Degree, safe class.
The above is only the preferred embodiment of the present invention it is noted that ordinary skill people for the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (6)
1. the concrete on fire steel construction lesion assessment system based on mobile wireless technology is it is characterised in that include：
Field data Fast Acquisition System, for gathering concrete on fire steel construction scene component data；
Concrete on fire steel construction damage data storehouse based on background server foundation, concrete on fire steel construction Residual Load Bearing Capacity computing system
And concrete on fire steel construction security authentication system；
Wireless communication transmission system, makes described field data Fast Acquisition System with described background server phase wireless telecommunications even
Connect, the concrete on fire steel construction scene component data syn-chronization conversion identification of described field data Fast Acquisition System collection is acquiescence
Information after be sent to described concrete on fire steel construction damage data storehouse, and it is remaining automatically to carry out concrete on fire steel construction by pre-setting method
Bearing capacity calculation, to remaining element bearing capacity security grading and concrete on fire steel construction security authentication, automatically determine fire
Steel construction degree of injury, safe class afterwards；
Described concrete on fire steel construction damage data storehouse includes：
The impaired property data base of component fireproof jointing sheath, and corresponding damage etc. is determined according to the impaired feature of component fireproof jointing sheath
Level；
Component residual deformation and tear property data base, and corresponding damage etc. is determined according to component residual deformation and tear feature
Level；
Component partial flexing and distortion character database, and corresponding damage etc. is determined according to component partial flexing and distortion character
Level；
Component bulk deformation property data base, and corresponding impairment scale is determined according to component bulk deformation feature；
The impaired property data base of connecting node, according to application and fire resistant coating, connecting plate residual deformation and tear, weld seam tear with
Bolt sliding and three subitems of deformation are set up, and determine corresponding impairment scale according to the impaired feature of component connecting node；
Concrete on fire steel construction micro-analysis database, sets up according to steel Widmannstatten structure, the change of martensite metallographic after overdoing, and root
Determine corresponding impairment scale according to steel Widmannstatten structure, martensite metallographic variation characteristic after overdoing；
Fire scene temperature deduction system, according to ISO-834 standard heating curve, fire remnants feature, the micro-analysis of steel, material
Material residual strength, steel hardness, metal surface thermo-color, the impaired feature of component are set up；
Described impairment scale is divided into II a, II b, III, IV level Four；
It is characterized in that, described concrete on fire steel construction Residual Load Bearing Capacity computing system, public by checking in existing steel structure member
The strength reduction factor η of concrete on fire steel is introduced in formulaT, fire rear part partial safety factor for resistance γTSet up, for by preset side
Method carries out axle center and draws, presses component strength checking computations, axis compression member Stability Checking, single shaft flexural member strength checking, single shaft
Flexural member Stability Checking, stretch bending, bending component strength checking, bending component Stability Checking, and according to checking computation results pair
The residue element bearing capacity security of concrete on fire steel construction is graded by pre-setting method, is divided into B, C, D three-level.
2. according to claim 1 the concrete on fire steel construction lesion assessment system based on mobile wireless technology it is characterised in that
Described concrete on fire steel construction security authentication system, for according to described concrete on fire steel construction Residual Load Bearing Capacity computing system to fire
The damage of the rating result of steel construction Residual Load Bearing Capacity security and the determination of described concrete on fire steel construction damage data storehouse after calamity
Grade carries out identification grading to concrete on fire steel construction security.
3. according to claim 2 the concrete on fire steel construction lesion assessment system based on mobile wireless technology it is characterised in that
The calculation criterion of described concrete on fire steel construction security authentication grading is as follows：
(1) concrete on fire steel structure member safety grades are divided into II a, II b, III, IV level Four；
(2) concrete on fire steel construction safety grades are divided into B, C, D three-level；
(3) concrete on fire steel construction safety grades, each component safety grades hundred concentrated by important component collection and secondary member
Divide than determination：Described important component refers to post, beam；Described secondary member refers to other components in addition to described post, beam；
Described important component collection rating scale is as follows：
B level：Component is concentrated and is not contained IV grade of component, can contain III grade of component and content is not more than 20%；
C level：Component is concentrated and is not more than 50% containing III grade of component and content, or containing IV grade of component and vertical member content is no less than
10% or horizontal member content be no less than 15%；
D level：Component is concentrated and is more than 50% containing III grade of component and content, or containing IV grade of component and vertical member content is no less than 10%
Or horizontal member content is no less than 15%；
Described secondary member collection rating scale is as follows：
B level：Component is concentrated and is not contained IV grade of component, can contain III grade of component and content is not more than 25%；
C level：Component is concentrated and is not more than 50% containing III grade of component and content, or containing IV grade of component and content is less than 20%；
D level：Component is concentrated and is more than 50% containing III grade of component and content, or containing IV grade of component and content is no less than 20%；
Wherein, the safety grades of concrete on fire steel construction, are determined by the lowest class that important component in identification unit is concentrated；Work as mirror
In order unit during lower than the minimum safe grade of important component collection two grades of the minimum safe grade of secondary member collection, its safety
Property grade can by important component collection minimum safe grade fall one-level determine.
4. according to claim 1 the concrete on fire steel construction lesion assessment system based on mobile wireless technology it is characterised in that
Described field data Fast Acquisition System be used for the text message form of systemic presupposition and or picture format extract or collection institute
State concrete on fire steel construction scene component data, be sent to described concrete on fire steel construction in real time through described wireless communication transmission system and damage
Hinder database, make described concrete on fire steel construction damage data storehouse and concrete on fire scene component data syn-chronization.
5. the concrete on fire steel construction lesion assessment system based on mobile wireless technology according to claim 1 or 4, its feature exists
In described field data Fast Acquisition System includes on-site data gathering device and mobile device, described mobile device and institute
State on-site data gathering device two-way communication link, for will collection systemic presupposition text message form and or image pane
After formula is sent to described on-site data gathering device, then by described on-site data gathering device by described wireless communication transmission system
System is sent to described concrete on fire steel construction damage data storehouse.
6. according to claim 1 the concrete on fire steel construction lesion assessment system based on mobile wireless technology it is characterised in that
Described concrete on fire steel construction scene component data includes fire remnants feature, component surface is damaged, deformation of member key message.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN111079088A (en) * | 2019-12-13 | 2020-04-28 | 中国建筑科学研究院有限公司 | Analysis method for compression-resistant bearing capacity fractional coefficient of masonry |
| CN111598448B (en) * | 2020-05-15 | 2021-05-18 | 青岛理工大学 | Post-fire damage assessment method based on concrete T-shaped beam |
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