CN112129835A - Device and method for identifying safety of steel structure after fire - Google Patents
Device and method for identifying safety of steel structure after fire Download PDFInfo
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- CN112129835A CN112129835A CN202011026605.XA CN202011026605A CN112129835A CN 112129835 A CN112129835 A CN 112129835A CN 202011026605 A CN202011026605 A CN 202011026605A CN 112129835 A CN112129835 A CN 112129835A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0234—Metals, e.g. steel
Abstract
The application relates to an identification device for steel structure safety after fire, which comprises an identification device body, wherein a beating device and a sound collecting device are arranged on the identification device body, the beating device comprises a driving motor and a beating component, the driving motor is fixedly arranged on the identification device body, and the beating component is fixedly connected with an output shaft of the driving motor; the sound collecting device is arranged at a position close to the knocking device and is fixedly connected with the identification device body. This application has the effect that improves steel construction intensity appraisal behind the conflagration.
Description
Technical Field
The application relates to the field of steel structure detection, in particular to an identification device and an identification method for steel structure safety after fire.
Background
The fire hazard in the room is caused by various conditions such as indoor fire playing, smoking after drinking, bringing in flammable and explosive articles and the like, the possibility of causing the fire hazard by electric appliances is not eliminated, for example, the electric appliances such as an electric cooker, an electric stove, an electric iron and the like are improperly used to cause the short circuit of a power supply so as to cause the fire hazard, the indoor electric appliances can not be used for a long time, the electric appliances are overloaded to cause the fire hazard, and the consequence is difficult to imagine.
After a house steel structure is subjected to fire, the strength of the house steel structure is greatly changed, and the steel structure usually loses bearing capacity at the temperature of 450-650 ℃ and is greatly deformed, so that steel columns and steel beams are bent, and the house steel structure cannot be used continuously due to excessive deformation.
In view of the above-mentioned related technologies, the inventors consider that the strength of the steel structure after a fire has a potential safety hazard.
Disclosure of Invention
In order to improve the identification effect on the strength of the steel structure after the fire, the application provides an identification device and an identification method for the safety of the steel structure after the fire.
First aspect, the application provides an appraisal device of steel construction security behind conflagration, adopts following technical scheme:
the device for identifying the safety of the steel structure after the fire comprises an identification device body, wherein a beating device and a sound collecting device are arranged on the identification device body, the beating device comprises a driving motor and a beating component, the driving motor is fixedly arranged on the identification device body, and the beating component is fixedly connected with an output shaft of the driving motor; the sound collecting device is arranged at a position close to the knocking device and is fixedly connected with the identification device body.
Through adopting the above-mentioned technical scheme, when using this identification device body, install the identification device body on the steel construction after the fire disaster, driving motor drives and beats the subassembly and beat the steel construction, the echo of beating the steel construction production is collected and is transmitted to the house outside by sound collection device and carry out data analysis, and then realize the appraisal to steel construction strength behind the fire disaster, install this identification device body simultaneously and appraise on the steel construction, need not that appraisal personnel treat in the house behind the fire disaster for a long time, only need in the house outside control the identification device body can, both realized the appraisal to the steel construction, satisfied the assurance to appraisal personnel safety again, it is more high-efficient to have reached the use, convenient effect.
Preferably, the rapping assembly comprises a mounting seat, a connecting spring and a rapping hammer, the mounting seat is fixedly connected with an output shaft of the driving motor, the connecting spring and the rapping hammer are provided with a plurality of connecting springs, the connecting springs are uniformly arranged on the circumferential surface of the mounting seat at intervals, the rapping hammer is arranged at the end position of the connecting spring, and two ends of the connecting spring are fixedly connected with the mounting seat and the rapping hammer respectively.
By adopting the technical scheme, when the knocking assembly is used, the driving motor drives the mounting seat to rotate, and the connecting spring on the circumferential surface of the mounting seat drives the knocking hammer to knock the steel structure, so that the strength of the steel structure is identified; be provided with connecting spring and strike the hammer on the mount pad, rotate the in-process at the mount pad, a plurality of connecting spring of mutually supporting strike the different positions of steel construction with striking the hammer, increase the appraisal position to the steel construction, further improve the appraisal sample result to steel construction intensity behind the conflagration, improve the accuracy of appraisal.
Preferably, the sound collecting device comprises a microphone and a transmission line which are arranged in a communicating manner, and one end, far away from the microphone, of the transmission line is arranged in a communicating manner with an external display analyzer.
Through adopting above-mentioned technical scheme, after the device of pounding strikes the steel construction, the echo of the microphone pair production of pounding is collected to information transmission who will collect through the transmission line carries out the analysis to the display analysis appearance in, improves the detection and the appraisal to steel construction intensity behind the conflagration, further improves the appraisal effect to the steel construction.
Preferably, the bottom of the identification device body is detachably connected with a fixed wheel, and a clamping groove is formed in the circumferential surface of the fixed wheel.
Through adopting above-mentioned technical scheme, set up the tight pulley in the bottom of identification device body to set up the draw-in groove on the tight pulley, make draw-in groove on the tight pulley and steel construction formation joint, improve the stability of identification device body in the use, control the identification device body simultaneously and remove through the tight pulley on the steel construction, detect and appraise the different positions of steel construction after the conflagration, further improve the detection and the appraisal result of steel construction.
Preferably, be provided with the link between appraisal device body and the tight pulley, the link is the setting of C type, and the top and the appraisal device body of link can be dismantled and be connected, and the bottom and the tight pulley of link can be dismantled and be connected.
Through adopting above-mentioned technical scheme, set up the link between identification device body and tight pulley, the link is connected with identification device body and tight pulley are dismantled, makes things convenient for dismantlement and installation between link and the identification device body, the tight pulley, further improves high efficiency and the convenience that identification device body, link and tight pulley cooperation were used.
Preferably, the top of the connecting frame is provided with a positioning hole, the position of the identification device body corresponding to the top of the connecting frame is provided with a plurality of connecting holes, and the connecting holes are arranged at intervals.
Through adopting above-mentioned technical scheme, set up the locating hole at the top of link to corresponding the position department of link and seting up a plurality of connecting holes at the identification device body, before installing the identification device body on the steel construction, adjust the position of link on the identification device body according to the width of steel construction, ensure the width of link and the width adaptation of steel construction, reinforcing link and identification device body stability when being connected, the reinforcing is to the detection and the appraisal of steel construction intensity.
Preferably, the bottom of the connecting frame is provided with a limiting hole, the connecting plate is fixedly connected to the connecting position of the fixed wheel and the connecting frame, the connecting plate is provided with a plurality of through holes matched with the limiting hole, and the through holes are arranged at intervals.
Through adopting above-mentioned technical scheme, set up spacing hole in the bottom of link, set up the connecting plate that is connected with the tight pulley to set up a plurality of through-holes on the connecting plate, according to the width adjustment connecting plate of steel construction and the position relation between the link, further improve the suitability of link and steel construction, strengthen the installation stability and the safety in utilization of appraising the device body.
Preferably, a cleaning device is fixedly arranged on the identification device body and is arranged on one side, away from the sound collecting device, of the rapping device.
Through adopting above-mentioned technical scheme, set up cleaning device on the identification device body, when using this identification device body to detect and appraise the steel construction behind the fire disaster, use cleaning device to clear away the burning impurity on the steel construction earlier, reduce burning impurity and produce the influence to the detection and the appraisal of steel construction, further improve identification device body's appraisal accuracy and result of use.
Preferably, the cleaning device comprises a scraper and a driving cylinder, and the scraper is fixedly connected with a piston rod of the driving cylinder.
Through adopting above-mentioned technical scheme, when using this cleaning device, start and drive actuating cylinder, drive actuating cylinder and promote the scraper and remove towards the direction that is close to steel structure surface, and then make the scraper strike off steel structure surface's burning impurity, strengthen the clearance to steel structure surface, convenient to use, the effect is outstanding, further improves cleaning device's result of use.
In a second aspect, the application provides a method for identifying the safety of a steel structure after a fire, which comprises the following steps:
s1, firstly, connecting the fixed wheel with the connecting plate and the connecting frame, and mounting the assembled connecting frame on the identification device body;
s2, respectively installing the sound collecting device, the cleaning device and the knocking device on the identification device body;
s3, adjusting the position relation of the connecting plates on the connecting frame according to the width of the steel structure, and ensuring that the fixed wheel can stably fix the steel structure;
s4, when the relative position relation between the connecting plate and the connecting frame is adjusted, the width of the steel structure cannot be met, and then the position relation of the top of the connecting frame relative to the identification device body is adjusted, so that the fixing effect of the steel structure is ensured;
s5, starting a driving cylinder, and driving a scraper to scrape and clean combustion impurities on the steel structure by the driving cylinder;
s6, starting a driving motor, driving the beating assembly to beat and identify the steel structure after scraping away combustion impurities, conveying the echo of the beating assembly beating the steel structure to a display analyzer through a transmission line by the sound collecting device, analyzing the echo by the display analyzer, and identifying the strength of the steel structure after combustion.
By adopting the technical scheme, when the identification device body is used for detecting and identifying the strength of the steel structure after a fire disaster, the fixed wheel, the connecting plate and the connecting frame are firstly assembled, the assembled connecting frame is arranged on the identification device body, and the sound collecting device, the cleaning device and the knocking device are respectively arranged on the identification device body; then, according to the width of the steel structure, the position relation of the connecting plate on the connecting frame is adjusted to ensure that the fixed wheel can be stably connected with the steel structure, when the relative position relation of the connecting plate and the connecting frame is adjusted, the width of the steel structure cannot be met, and then the position relation of the top of the connecting frame relative to the identification device body is adjusted to ensure the adaptability of the steel structure; then start and drive actuating cylinder, drive actuating cylinder and drive the scraper and scrape the clearance to burning impurity on the steel construction, start driving motor simultaneously, driving motor drives and beats the subassembly and beat the appraisal to scraping the steel construction behind the burning impurity, and sound collection device will beat the subassembly and beat the echo of beating the steel construction and carry to the demonstration analysis appearance through the transmission line, and the demonstration analysis appearance carries out the analysis to the echo, and then appraises the intensity of the steel construction after burning.
In summary, the present application includes at least one of the following beneficial technical effects:
1. by arranging the identification device body, arranging the knocking device and the sound collecting device on the identification device body, knocking the steel structure by the knocking device, and collecting and transmitting echoes by the sound collecting device, the effect of identifying the strength of the steel structure after a fire disaster is achieved;
2. by arranging the microphone and the transmission line, the microphone collects echoes generated by knocking, and transmits the collected information to the display analyzer for analysis through the transmission line, so that the detection and identification of the strength of the steel structure after fire are improved.
3. Through set up cleaning device on the identification device body, cleaning device clears away the burning impurity on to the steel construction, reduces burning impurity and produces the influence to the detection and the identification of steel construction, improves the appraisal accuracy of identification device body.
Drawings
FIG. 1 is a schematic overall structure of the present application;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
FIG. 3 is a schematic view of the present application intended to highlight the underlying structure;
fig. 4 is an enlarged schematic view at B in fig. 3.
Description of reference numerals: 1. authenticating the device body; 11. connecting holes; 2. a tapping device; 21. a drive motor; 22. a rapping component; 221. a mounting seat; 222. a connecting spring; 223. knocking hammers; 3. a sound collection device; 31. a microphone; 32. a transmission line; 4. a fixed wheel; 41. a card slot; 5. a connecting frame; 51. positioning holes; 52. a limiting hole; 6. a cleaning device; 61. a scraper; 62. a driving cylinder; 7. a connecting plate; 71. and a through hole.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses appraisal device of steel construction security behind conflagration. With reference to fig. 1 and 2, the device for identifying the safety of the steel structure after fire comprises an identification device body 1, wherein a beating device 2 and a sound collecting device 3 are arranged on the identification device body 1, the beating device 2 beats the steel structure, the sound collecting device 3 collects and transmits echoes, and then the steel structure strength is analyzed, so that the identification effect of the steel structure strength after fire is achieved.
With reference to fig. 1 and 3, the rapping device 2 comprises a driving motor 21 and a rapping component 22, wherein the driving motor 21 is fixedly arranged on the identification device body 1, and the rapping component 22 is fixedly connected with an output shaft of the driving motor 21; the sound collecting device 3 is arranged at a position close to the knocking device 2 and is fixedly connected with the identification device body 1; the rapping assembly 22 comprises a mounting seat 221, a connecting spring 222 and a rapping hammer 223, the mounting seat 221 is fixedly connected with an output shaft of the driving motor 21, the connecting spring 222 and the rapping hammer 223 are provided in a plurality, the connecting springs 222 are uniformly arranged on the circumferential surface of the mounting seat 221 at intervals, the rapping hammer 223 is arranged at the end position of the connecting spring 222, and two ends of the connecting spring 222 are fixedly connected with the mounting seat 221 and the rapping hammer 223 respectively.
With reference to fig. 1 and 3, when the identification device body 1 is used, the identification device body 1 is installed on a steel structure after fire, the driving motor 21 drives the installation seat 221 to rotate, the connecting spring 222 on the circumferential surface of the installation seat 221 drives the knocking hammer 223 to knock the steel structure, and then the identification of the strength of the steel structure is completed; be provided with coupling spring 222 and strike hammer 223 on mount pad 221, rotate the in-process at mount pad 221, a plurality of coupling spring 222 of mutually supporting strike the different positions of steel construction with strike hammer 223, the echo of striking the steel construction production is collected and is transmitted to the house outside and carry out data analysis by sound collection device 3, and then the realization is to the appraisal of steel construction intensity behind the conflagration, install this appraisal device body 1 on the steel construction and appraise simultaneously, need not that appraisal personnel treat in the house behind the conflagration for a long time, only need to control appraisal device body 1 in the house outside can, both realized the appraisal to the steel construction, satisfied the assurance to appraisal personnel's safety again, it is more efficient to use, safety.
Referring back to fig. 1, the sound collection device 3 includes the microphone 31 and the transmission line 32 that the intercommunication set up, and the transmission line 32 is kept away from the one end of microphone 31 and is set up with external demonstration analysis appearance intercommunication, strikes the back when the device 2 that beats strikes the steel construction, and the echo that the microphone 31 produced to striking is collected to transmit the information of collecting to showing in the analysis appearance through the transmission line 32 and carry out the analysis, improve the detection and the appraisal to steel construction intensity after the conflagration, further improve the appraisal effect to the steel construction.
Referring to fig. 2, the bottom of identification device body 1 sets up tight pulley 4 to set up draw-in groove 41 on tight pulley 4, make draw-in groove 41 on the tight pulley 4 and steel structure form the joint, improve the stability of identification device body 1 in the use, control identification device body 1 simultaneously and remove through tight pulley 4 on the steel structure, detect and appraise the different positions of steel structure after the conflagration, further improve the detection and the appraisal result of steel structure.
With reference to fig. 3 and 4, a connecting frame 5 is arranged between the identification device body 1 and the fixed wheel 4, the connecting frame 5 is arranged in a C shape, a positioning hole 51 is formed in the top of the connecting frame 5, a plurality of connecting holes 11 are formed in the identification device body 1 corresponding to the top of the connecting frame 5, the connecting holes 11 are arranged at intervals, before the identification device body 1 is installed on a steel structure, the position of the connecting frame 5 on the identification device body 1 is adjusted according to the width of the steel structure, the width of the connecting frame 5 is ensured to be matched with the width of the steel structure, the stability of the connecting frame 5 and the identification device body 1 is enhanced when the connecting frame is connected, and the detection and identification of the strength of the steel; spacing hole 52 has been seted up to link 5 bottom, and the rigid coupling of position department that links to each other of tight pulley 4 and link 5 has connecting plate 7, sets up a plurality of through-holes 71 with spacing hole 52 looks adaptation on the connecting plate 7, and a plurality of through-holes 71 intervals set up, according to the width regulation connecting plate 7 of steel construction and the position relation between link 5, further improves the suitability of link 5 and steel construction, strengthens the installation stability and the safety in utilization of appraising device body 1.
With reference to fig. 1 and 3, a cleaning device 6 is fixedly arranged on the identification device body 1, the cleaning device 6 is arranged on one side of the rapping device 2, which is far away from the sound collecting device 3, when the identification device body 1 is used for detecting and identifying a steel structure after fire, the cleaning device 6 is firstly used for removing combustion impurities on the steel structure, so that the influence of the combustion impurities on the detection and identification of the steel structure is reduced; cleaning device 6 includes scraper 61 and drives actuating cylinder 62, and scraper 61 links to each other with the piston rod that drives actuating cylinder 62 is fixed, when using this cleaning device 6, starts to drive actuating cylinder 62, drives actuating cylinder 62 and promotes scraper 61 and remove towards the direction that is close to the steel construction surface, and then makes scraper 61 strike off steel construction surface's burning impurity, strengthens the clearance to steel construction surface, convenient to use, and the effect is outstanding, further improves cleaning device 6's result of use.
The implementation principle of the identification device of steel construction security behind this application embodiment is: when the identification device body 1 is used for identifying the strength of the steel structure after a fire disaster, the position of the connecting frame 5 on the identification device body 1 is adjusted according to the width of the steel structure, and the fixed wheel 4 on the connecting frame 5 is ensured to be stably connected with the steel structure; then, the driving cylinder 62 is started to remove combustion impurities on the surface of the steel structure, the driving motor 21 is started at the same time, the driving motor 21 drives the knocking component 22 to knock the steel structure, knocked echoes are collected by the microphone 31 and are conveyed to the display analyzer through the transmission line 32 to be detected and analyzed, and the effect of identifying the strength of the steel structure after a fire disaster is achieved.
The embodiment of the application also discloses an identification method of the safety of the steel structure after the fire, which comprises the following identification methods:
s1, firstly, connecting the fixed wheel 4 with the connecting plate 7 and the connecting frame 5, and mounting the assembled connecting frame 5 on the identification device body 1;
s2, respectively installing the sound collecting device 3, the cleaning device 6 and the rapping device 2 on the identification device body 1;
s3, adjusting the position relation of the connecting plate 7 on the connecting frame 5 according to the width of the steel structure, and ensuring that the fixed wheel 4 can stably fix the steel structure;
s4, when the relative position relation between the connecting plate 7 and the connecting frame 5 is adjusted, the width of the steel structure cannot be met, and then the position relation of the top of the connecting frame 5 relative to the identification device body 1 is adjusted, so that the fixing effect of the steel structure is ensured;
s5, starting the driving cylinder 62, and driving the driving cylinder 62 to drive the scraper 61 to scrape and clean combustion impurities on the steel structure;
s6, starting the driving motor 21, driving the beating assembly 22 to beat and identify the steel structure after removing the combustion impurities by the driving motor 21, conveying the echo of the beating assembly 22 beating the steel structure to the display analyzer through the transmission line 32 by the sound collecting device 3, analyzing the echo by the display analyzer, and identifying the strength of the steel structure after combustion.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The identification device for the safety of the steel structure after the fire disaster comprises an identification device body (1), wherein a beating device (2) and a sound collecting device (3) are arranged on the identification device body (1), the beating device (2) comprises a driving motor (21) and a beating component (22), the driving motor (21) is fixedly arranged on the identification device body (1), and the beating component (22) is fixedly connected with an output shaft of the driving motor (21); the sound collecting device (3) is arranged at a position close to the knocking device (2) and is fixedly connected with the identification device body (1).
2. The device for identifying the safety of the steel structure after the fire as claimed in claim 1, wherein: beat subassembly (22) including mount pad (221), coupling spring (222) and strike hammer (223), mount pad (221) links to each other with the output shaft of driving motor (21) is fixed, coupling spring (222) and strike hammer (223) and be provided with a plurality ofly, and a plurality of coupling spring (222) even interval sets up on the circumferential surface of mount pad (221), strike hammer (223) and arrange the tip position department of coupling spring (222) in, and the both ends of coupling spring (222) respectively with mount pad (221), strike hammer (223) and fix and link to each other.
3. The device for identifying the safety of the steel structure after the fire as claimed in claim 1, wherein: the sound collection device (3) comprises a microphone (31) and a transmission line (32) which are communicated, wherein one end, far away from the microphone (31), of the transmission line (32) is communicated with an external display analyzer.
4. The device for identifying the safety of the steel structure after the fire as claimed in claim 1, wherein: the bottom of the identification device body (1) is detachably connected with a fixed wheel (4), and a clamping groove (41) is formed in the circumferential surface of the fixed wheel (4).
5. The device for identifying the safety of the steel structure after the fire as claimed in claim 4, wherein: a connecting frame (5) is arranged between the identification device body (1) and the fixed wheel (4), the connecting frame (5) is arranged in a C shape, the top of the connecting frame (5) is detachably connected with the identification device body (1), and the bottom of the connecting frame (5) is detachably connected with the fixed wheel (4).
6. The device for identifying the safety of the steel structure after the fire as claimed in claim 5, wherein: the top of the connecting frame (5) is provided with a positioning hole (51), the position of the identification device body (1) corresponding to the top of the connecting frame (5) is provided with a plurality of connecting holes (11), and the connecting holes (11) are arranged at intervals.
7. The device for identifying the safety of the steel structure after the fire as claimed in claim 5, wherein: spacing hole (52) have been seted up to link (5) bottom, and the rigid coupling of position department that links to each other of tight pulley (4) and link (5) has connecting plate (7), sets up a plurality of through-holes (71) with spacing hole (52) looks adaptation on connecting plate (7), and a plurality of through-holes (71) interval sets up.
8. The device for identifying the safety of the steel structure after the fire as claimed in claim 1, wherein: the identification device body (1) is fixedly provided with a cleaning device (6), and the cleaning device (6) is arranged on one side of the knocking device (2) departing from the sound collecting device (3).
9. The device for identifying the safety of the steel structure after the fire as claimed in claim 8, wherein: the cleaning device (6) comprises a scraper (61) and a driving cylinder (62), and the scraper (61) is fixedly connected with a piston rod of the driving cylinder (62).
10. The apparatus for evaluating the safety of a steel structure after fire as set forth in any one of claims 1 to 9, wherein: comprises the following identification methods
S1, firstly, connecting the fixed wheel (4) with the connecting plate (7) and the connecting frame (5), and mounting the assembled connecting frame (5) on the identification device body (1);
s2, respectively installing the sound collecting device (3), the cleaning device (6) and the beating device (2) on the identification device body (1);
s3, adjusting the position relation of the connecting plate (7) on the connecting frame (5) according to the width of the steel structure, and ensuring that the steel structure can be stably fixed by the fixed wheel (4);
s4, when the relative position relation between the connecting plate (7) and the connecting frame (5) is adjusted, the width of the steel structure cannot be met, and then the position relation of the top of the connecting frame (5) relative to the identification device body (1) is adjusted, so that the fixing effect of the steel structure is ensured;
s5, starting a driving cylinder (62), and driving the driving cylinder (62) to drive a scraper (61) to scrape and clean combustion impurities on the steel structure;
s6, starting a driving motor (21), driving the beating assembly (22) to beat and identify the steel structure after combustion impurities are scraped, and conveying the echo of the beating assembly (22) beating the steel structure to a display analyzer through a transmission line (32) by the sound collecting device (3), wherein the display analyzer analyzes the echo, and then identifies the strength of the steel structure after combustion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011026605.XA CN112129835A (en) | 2020-09-25 | 2020-09-25 | Device and method for identifying safety of steel structure after fire |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011026605.XA CN112129835A (en) | 2020-09-25 | 2020-09-25 | Device and method for identifying safety of steel structure after fire |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109011A (en) * | 2021-03-29 | 2021-07-13 | 太仓众擎机械设备有限公司 | Comprehensive detection device for steel structure frame |
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| CN210982092U (en) * | 2019-10-29 | 2020-07-10 | 广东中星检测鉴定有限公司 | Concrete surface hardness detection device for house safety identification |
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| CN113109011A (en) * | 2021-03-29 | 2021-07-13 | 太仓众擎机械设备有限公司 | Comprehensive detection device for steel structure frame |
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Application publication date: 20201225 |