CN105136421A - Testing apparatus of dynamic response of filler wall under combustible gas explosion - Google Patents
Testing apparatus of dynamic response of filler wall under combustible gas explosion Download PDFInfo
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- CN105136421A CN105136421A CN201510638110.5A CN201510638110A CN105136421A CN 105136421 A CN105136421 A CN 105136421A CN 201510638110 A CN201510638110 A CN 201510638110A CN 105136421 A CN105136421 A CN 105136421A
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Abstract
Disclosed in the invention is a testing apparatus of a dynamic response of a filler wall under combustible gas explosion. The testing apparatus comprises a reinforced concrete room (3) without rear side wall and a reinforced concrete frame (5) fixedly connected to the rear side wall of the room (3). A testing brick wall (8) is prefabricated on the frame (5). An explosion venting hole (1) is formed in a front side wall of the room (3) and is filled with an explosion venting material. A plurality of pressure sensors (2) are arranged at the inner side of the front side wall of the room (3). Besides, a displacement meter (16) is arranged at the outer side of the testing brick wall (8); and the pressure sensors (2) and the displacement meter (16) are in signal connection with a data acquisition unit (6). An igniting head (4) is arranged inside the room (3); and a combustible gas source connected with the room (3) is also arranged outside the room (3). According to the testing apparatus, a real combustible gas explosion load can be used for loading the filler wall.
Description
Technical field
The invention belongs to building structure knock test research equipment technical field, particularly a kind of test unit that can carry out the dynamic response of infilled wall under flammable gas explosion effect.
Background technology
Brittle fracture easily occurs masonry structure under the effect of flammable gas explosion load destroys, under Blast Load effect, can there is high-speed projectile in the fragment broken to form, the fragment of these high-speed projectiles can cause great injury to interior of building, outside personnel and facility.
But because the history applying combustion gas in China's covil construction is not long, do not cause too many concern, correlative study development is also more late.Mostly current China, about the research of gas explosion, is the factory safety problem for producing or contact inflammable gas, seldom systematically studies the problem that the anti-gas explosion of residential housing causes local failure or continuous collapse.In recent years, along with the productive life of combustion gas and people contacts more and more tightr, carry out gas explosion load to the failure mechanism of reinforced concrete frame infilled wall and the research of safeguard procedures extremely more urgent, there is very important theory significance and actual application value.
Use gasbag pressurizes to replace explosive load to the test of the anti-flammable gas explosion of building structure at present, load distribution characteristics, by manual control, there are differences with true flammable gas explosion load more.
Therefore, prior art Problems existing is: can not carry out load test with real flammable gas explosion load to infilled wall, cannot obtain the parameter such as the infilled wall capability of antidetonance, failure mode accurately.
Summary of the invention
The object of the present invention is to provide the test unit of the dynamic response of a kind of infilled wall under flammable gas explosion effect, can load infilled wall with real flammable gas explosion load, carry out bridge response to forced vibration, the parameters such as the infilled wall capability of antidetonance, failure mode are provided for scientific algorithm and engineering design.
The technical solution realizing the object of the invention is:
A kind of infilled wall flammable gas explosion bridge response to forced vibration device, comprise the reinforced concrete room without back side wall, be fixedly connected on the reinforced concrete frame of described room back side wall, described framework is prefabricated with test brick wall, the front side wall in described room is provided with venting of dust explosion hole, in described venting of dust explosion hole, venting of dust explosion material is installed, multiple pressure transducer is provided with in side within the walls in the front side in described room, displacement meter is provided with outside described test brick wall, described pressure transducer and displacement meter are all connected with data acquisition unit signal, igniter head is provided with in described room, the combustible gas source communicated with room is provided with outside described room.
The present invention compared with prior art, its remarkable advantage:
Can load infilled wall with real flammable gas explosion load, carry out bridge response to forced vibration, the parameters such as the infilled wall capability of antidetonance, failure mode are provided for scientific algorithm and engineering design.
Further, together with test brick wall is prefabricated with reinforced concrete frame, reinforced concrete frame and reinforced concrete room freely can be dismantled by bolt, be assembled, therefore, it is possible to carry out the test of many group operating modes fast.
Pressure transducer with water-cooling system and optical filtering diaphragm can be recorded to pressure data more accurately;
Displacement meter afterbody is fixed on reinforced concrete frame, the relative displacement at displacement meter head and the tail two ends is eliminated, improves the accuracy of measured displacements data.
High-speed camera function captures that body of wall breaks, collapses, the overall process of separation of fragments.
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is infilled wall flammable gas explosion bridge response to forced vibration apparatus structure schematic diagram of the present invention.
Fig. 2 is the planimetric map of Fig. 1.
In figure, 1. venting of dust explosion hole, 2. pressure transducer, 3. reinforced concrete room, 4. igniter head, 5. reinforced concrete frame, 6. data collecting instrument, 7. computer, 8. test brick wall, 9. high-speed camera, 10. high-speed camera, 11. infrared ray gas analyzers, 12. explosion-proof fans, 13. displacement meters, 14. bolts, 15. nuts, 16. finer wires, combustible gas source 100, fuel gas bottle group 101, gas admittance valve 102, draft tube 103.
Embodiment
As illustrated in fig. 1 and 2, infilled wall flammable gas explosion bridge response to forced vibration device of the present invention, it comprises the reinforced concrete room 3 without back side wall, be fixedly connected on the reinforced concrete frame 5 of described room 3 back side wall, described framework 5 is prefabricated with test brick wall 8, the front side wall in described room 3 is provided with venting of dust explosion hole 1, in described venting of dust explosion hole 1, venting of dust explosion material is installed, multiple pressure transducer 2 is provided with in side within the walls in the front side in described room 3, displacement meter 16 is provided with outside described test brick wall 8, described pressure transducer 2 and displacement meter 16 are all connected with data acquisition unit 6 signal, igniter head 4 is provided with in described room 3, the combustible gas source communicated with room 3 is provided with outside described room 3.
Data acquisition unit 6 can be connected with computer 7 again.Igniter head 4 can colligation on finer wire 19.
Described room 3 is connected by bolt 17 with framework 5, and described bolt 17 one end is embedded in edge after room 3 both walls, and the other end is through fastening after framework 5.
Described combustible gas source 100 comprises fuel gas bottle group 101 and gas admittance valve 102, with room 3 communicates after being connected by draft tube 103.
Also comprise the probe be placed in outside room 3 and can stretch into infrared ray gas analyzer 11 in room 3.
Also comprise and be placed in the first high-speed camera 9 can taking the flame going out venting of dust explosion hole 1 outside room 3 and the second high-speed camera 10 that the response of test brick wall 8 can be taken.
Described pressure transducer 2 is with water-cooling system and optical filtering diaphragm.
Consider the antiknock ability of general venting of dust explosion material and the explosion pressure of inflammable gas, reinforced concrete room 6 is by resisting 600kPa inner overpressure to carry out structural reinforcement calculating.
Test brick wall 8 and reinforced concrete frame 5 be prefabricated together with, and reinforced concrete frame 5 and reinforced concrete room 3 freely can be dismantled by bolt 17, be assembled, therefore, it is possible to carry out the test of many group operating modes fast.
The high-speed camera 9 of room outer setting can capture that brick wall breaks, collapses, the overall process of separation of fragments.
Different venting pressures is obtained by the glass, film, plank etc. of installing different venting of dust explosion materials such as different-thickness, type on pressure release hole 1.
On indoor wall, finer wire 19 can be installed in any position, thus can the position of specified point duration and degree of heating 4 arbitrarily.
Test unit operation steps of the present invention is specially:
1, lift reinforced concrete frame 5 and test this combined member of body of wall 8 to the back side, reinforced concrete room 3, fixed by bolt 17.
2, by finer wire 19 at assigned address mounting points duration and degree of heating 4;
3, on venting of dust explosion hole 1, venting of dust explosion material is installed;
4, open reduction valve 102, in reinforced concrete room 3, be filled with inflammable gas from fuel gas bottle group 101 by draft tube 103;
5, use infrared ray gas analyzer 11 to carry out Real-Time Monitoring to indoor concentration, open explosion-proof fan 13 simultaneously, fully mixed by indoor mixed gas, concentration is identical everywhere to make indoor;
6, when concentration reaches appointment numerical value, close explosion-proof fan 13, leave standstill after 30 seconds, flashpoint duration and degree of heating 4, record explosion pressure by pressure transducer 2, record deformation of wall by displacement meter 16, taken by high-speed camera 9 that body of wall breaks, collapses, the overall process of separation of fragments.
Adopt test unit of the present invention, the bridge response to forced vibration of infilled wall under flammable gas explosion effect can be carried out smoothly, the parameters such as the infilled wall capability of antidetonance, failure mode are provided for scientific algorithm and engineering design.Further, together with test brick wall is prefabricated with reinforced concrete frame, reinforced concrete frame and reinforced concrete room freely can be dismantled by bolt, be assembled, therefore, it is possible to carry out the test of many group operating modes fast.Pressure transducer with water-cooling system and optical filtering diaphragm can be recorded to pressure data more accurately; Displacement meter afterbody is fixed on reinforced concrete frame, the relative displacement at displacement meter head and the tail two ends is eliminated, improves the accuracy of measured displacements data.High-speed camera function captures that brick wall breaks, collapses, the overall process of separation of fragments.
Claims (7)
1. an infilled wall flammable gas explosion bridge response to forced vibration device, it is characterized in that: comprise the reinforced concrete room (3) without back side wall, be fixedly connected on the reinforced concrete frame (5) of described room (3) back side wall, described framework (5) is prefabricated with test brick wall (8), the front side wall of described room (3) is provided with venting of dust explosion hole (1), in described venting of dust explosion hole (1), venting of dust explosion material is installed, multiple pressure transducer (2) is provided with in side within the walls in the front side of described room (3), displacement meter (16) is provided with in described test brick wall (8) outside, described pressure transducer (2) is all connected with data acquisition unit (6) signal with displacement meter (16), igniter head (4) is provided with in described room (3), the combustible gas source (100) communicated with room (3) is provided with outside described room (3).
2. test unit according to claim 1, it is characterized in that: described room (3) are connected by bolt (17) with framework (5), described bolt (17) one end is embedded in edge after room (3) both walls, and the other end is fastening afterwards through framework (5).
3. test unit according to claim 1, it is characterized in that: described combustible gas source (1) comprises fuel gas bottle group (101) and gas admittance valve (102), by communicating with room (3) after draft tube (103) series connection.
4. test unit according to claim 1, is characterized in that: also comprise and be placed in room (3) outward, and probe can stretch into the infrared ray gas analyzer (11) in room (3).
5. test unit according to claim 1, is characterized in that: also comprise and be placed in room (3) and can take first high-speed camera (9) of the flame going out venting of dust explosion hole (1) outward and can take test brick wall (8) the second high-speed camera (10) of responding.
6. test unit according to claim 1, is characterized in that: described pressure transducer (2) band water-cooling system and optical filtering diaphragm.
7. test unit according to claim 1, is characterized in that: the reinforced concrete of described room (3) carries out structural reinforcement calculating by resisting 600kPa inner overpressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510638110.5A CN105136421A (en) | 2015-09-30 | 2015-09-30 | Testing apparatus of dynamic response of filler wall under combustible gas explosion |
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| CN201510638110.5A CN105136421A (en) | 2015-09-30 | 2015-09-30 | Testing apparatus of dynamic response of filler wall under combustible gas explosion |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226021A (en) * | 2016-08-29 | 2016-12-14 | 中国人民解放军理工大学 | Gas burst pressure produces and loading experimental apparatus |
| CN106769155A (en) * | 2017-02-14 | 2017-05-31 | 中国人民解放军理工大学 | Multifunctional unit into layered structure blast resistance test device |
| CN108828260A (en) * | 2018-08-31 | 2018-11-16 | 中国人民解放军军事科学院国防工程研究院 | A kind of armoured concrete slab explosion shock collapse fragment initial velocity measuring system and method |
| CN109738148A (en) * | 2018-12-17 | 2019-05-10 | 中国人民解放军61489部队 | It explodes before a kind of underground engineering protective-door the calculation method of positive pressure of shock wave behind the door |
| CN111982451A (en) * | 2020-09-02 | 2020-11-24 | 中国人民解放军军事科学院国防工程研究院 | Shock wave tunnel test device and test method |
| CN112197929A (en) * | 2020-10-09 | 2021-01-08 | 哈尔滨工程大学 | Device and method for carrying out underwater explosion test on land |
| CN116735388A (en) * | 2023-08-15 | 2023-09-12 | 航天氢能科技有限公司 | System and method for testing anti-explosion performance of hydrogen explosion anti-explosion material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106226021A (en) * | 2016-08-29 | 2016-12-14 | 中国人民解放军理工大学 | Gas burst pressure produces and loading experimental apparatus |
| CN106769155A (en) * | 2017-02-14 | 2017-05-31 | 中国人民解放军理工大学 | Multifunctional unit into layered structure blast resistance test device |
| CN108828260A (en) * | 2018-08-31 | 2018-11-16 | 中国人民解放军军事科学院国防工程研究院 | A kind of armoured concrete slab explosion shock collapse fragment initial velocity measuring system and method |
| CN109738148A (en) * | 2018-12-17 | 2019-05-10 | 中国人民解放军61489部队 | It explodes before a kind of underground engineering protective-door the calculation method of positive pressure of shock wave behind the door |
| CN111982451A (en) * | 2020-09-02 | 2020-11-24 | 中国人民解放军军事科学院国防工程研究院 | Shock wave tunnel test device and test method |
| CN111982451B (en) * | 2020-09-02 | 2022-09-13 | 中国人民解放军军事科学院国防工程研究院 | Shock wave tunnel test device and test method |
| CN112197929A (en) * | 2020-10-09 | 2021-01-08 | 哈尔滨工程大学 | Device and method for carrying out underwater explosion test on land |
| CN112197929B (en) * | 2020-10-09 | 2021-05-04 | 哈尔滨工程大学 | Device and method for carrying out underwater explosion test on land |
| CN116735388A (en) * | 2023-08-15 | 2023-09-12 | 航天氢能科技有限公司 | System and method for testing anti-explosion performance of hydrogen explosion anti-explosion material |
| CN116735388B (en) * | 2023-08-15 | 2024-02-13 | 航天氢能科技有限公司 | System and method for testing anti-explosion performance of hydrogen explosion anti-explosion material |
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Application publication date: 20151209 |