CN201277903Y - Vibration monitoring apparatus for building structure collapse in fire disaster - Google Patents
Vibration monitoring apparatus for building structure collapse in fire disaster Download PDFInfo
- Publication number
- CN201277903Y CN201277903Y CNU200820090234XU CN200820090234U CN201277903Y CN 201277903 Y CN201277903 Y CN 201277903Y CN U200820090234X U CNU200820090234X U CN U200820090234XU CN 200820090234 U CN200820090234 U CN 200820090234U CN 201277903 Y CN201277903 Y CN 201277903Y
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- building structure
- vibration
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Abstract
The utility model provides vibration supervisory equipment when a building structure collapses in case of fire. The equipment comprises a vibration sensor, a signal amplifying-filtering system connected with the vibration sensor, a signal collecting-processing system connected with the signal amplifying-filtering system, and a supervisory unit connected with the signal collecting-processing system, wherein the signal amplifying-filtering system comprises a signal amplifier and a signal filter which are mutually connected, the signal amplifier is connected with the vibration sensor, the signal filter is connected with the signal collecting-processing system, and the vibration sensor is arranged on the component of the building structure. The utility model can well supervise the working state of the building structure in case of fire, can know if the working state of the building structure is safe to provide useful information instantly for firefighters, and can evacuate trapped people and save important materials in time.
Description
(1) technical field
The utility model relates to the building structure technical field of preventing and reducing natural disasters, and is specifically related to a kind of building structure collapse vibration when fire hazard supervising device.
(2) background technology
Along with development of science and technology, the vibration characteristics test that engineering technical personnel can carry out being caused by wind, earthquake equal excitation and the collection and the processing of data.Vibration-testing mainly is by sensor, amplifier and demonstration or recorder, measures the amounts of exercise such as displacement, speed, acceleration of engineering structure its significant points under excitation, thus the duty of solution structure.By momental measurement, can the dynamic characteristic of solution structure, as characterisitic parameters such as natural frequency, natural mode of vibration, damping and dynamic stiffness, for the design of the power of engineering structure provides foundation.But so far, the vibration characteristics of object is tested under the still unmatchful high temperature, and monitors the precedent of building structure duty with it.
(3) summary of the invention
The purpose of this utility model is to provide a kind of duty that can monitor building structure under the fire preferably, whether the duty that can understand building structure safety, immediately for the fire fighter provides useful information, can in time evacuate trapped personnel and rescue the building structure collapse vibration when fire hazard supervising device of valuable cargo.
The purpose of this utility model is achieved in that its involving vibrations sensor, connects the signal amplification filtering system of vibration transducer, connects signal acquiring processing system and the monitoring unit that is connected signal acquiring processing system that signal amplifies filtering system, signal amplifies filtering system and comprises interconnective signal amplifier and signal filter, signal amplifier connects vibration transducer, signal filter connects signal acquiring processing system, and vibration transducer is arranged on the building structural element.
The utility model also comprises some technical characterictics like this:
1, described building structural element comprises pillar middle part and top, the span centre of beam, and 1/4,1/2 the striding of plate.
When using, at first correctly lays the utility model vibration transducer, when fire takes place, vibration transducer can be gathered raw data, pass through the amplification and the filtration of signal amplifier, signal filter subsequently, the entering signal acquisition processing system obtains vibration parameters, vibration parameters that will record in real time and monitoring means connect at last, by the decision criteria of monitoring of software inside in the monitoring unit, judge whether safety of building structure, and when danger, send early warning.
The utility model has been set up the supervisory system that a cover building structure is collapsed under fire.Quantitative corresponding relation between promptly collapsing according to vibration parameters of setting up and building structure, and utilize vibration test technology, some unique point in the structure is carried out the vibration characteristics test that fire causes, in conjunction with relevant monitoring of software, the duty of predicted entire building structure under fire judges whether safety.
(1) chooses the reference mark of carrying out the vibration characteristics test.Different building elements, the position at its reference mark is different.
When (2) testing, the vibration transducer that normal temperature is used down carries out certain technical finesse and protection, makes its operate as normal at high temperature.
(3) when the vibration parameters under the building structure fire that records in real time surpassed each self-corresponding limit value, building structure was collapsed.
Behavior under the member fire such as the beam of building structure, post, plate is different, but because the vibration characteristics of the member that the fire excitation causes has good regularity.So, by vibration parameters under the monitoring building element fire, can judge the duty of building structure, judge its whether safety, thereby can instruct fire-fighting fire extinguishing work.
The utility model has comprehensively been determined the vibration parameters of building structure and the corresponding relation between the structural collapse on a large amount of experimental basis.For determining this relation, the vibration characteristics that needs to cause owing to other excitations in the building structure is filtered, and just can obtain the oscillation phenomenon that real fire excitation causes.Be the relation of reaction structure vibration parameters and building structure duty scientifically, introduced the vibration parameters ratio, be i.e. the ratio of structural vibration intrinsic numeric under structural vibrations intrinsic numeric and each the self-corresponding normal temperature under the fire.Under the fire, when building structure collapses is one of problem of relatively being concerned about of fire fighter, can instruct fire-fighting fire extinguishing work in view of the above.
The utility model belongs to the prevent and reduce natural disasters application technology in field of building structure, is applicable to the vibration characteristics of the building structure that prediction and monitoring fire cause and collapses, and instructs fire-fighting work.Specifically, the application technology that be collection sensor, electronics, signal analysis, structural vibration is theoretical and be programmed in one.
Effect of the present utility model: the utility model can be monitored the duty of building structure under the fire preferably, whether the duty that can understand building structure safety, immediately for the fire fighter provides useful information, can in time evacuate trapped personnel and rescue valuable cargo.
(4) description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is that certain floor measuring point is arranged and measuring point numbering figure;
Fig. 3-Fig. 4 is 2 a acceleration diagram, and Fig. 3 is that (130min～150min), Fig. 4 are measuring point 2 acceleration change curves (150min～220min) to measuring point 2 acceleration change curves;
Fig. 5 is the process flow diagram of monitoring of software.
(5) embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
In conjunction with Fig. 1, the signal acquiring processing system and the monitoring unit that is connected signal acquiring processing system of present embodiment involving vibrations sensor, the signal amplification filtering system that connects vibration transducer, connection signal amplification filtering system, signal amplifies filtering system and comprises interconnective signal amplifier and signal filter, signal amplifier connects vibration transducer, signal filter connects signal acquiring processing system, and vibration transducer is arranged on the building structural element.In conjunction with Fig. 5, the workflow of present embodiment is: vibration transducer 1 is arranged on the floor 2, vibration transducer 1 records the raw data of vibration characteristics, through signal amplifier, signal filter and signal acquiring processing system, obtain the real-time vibration parameters of building structure, at last vibration parameters Input Monitor Connector software is carried out safe judgement.
1, present embodiment is implemented according to the following steps:
(1) measuring point is arranged.Displacement in the building structural element, the point that distortion is bigger are as the unique point of vibration-testing, shown in position among Fig. 23,4.
(2) vibration characteristics test.Select suitable surveying instrument for use, the vibration characteristics of each unique point is tested, and data are gathered and handled.
(3) the vibration parameters limit value that collapses according to the reflection building structure of Input Monitor Connector software is handled the vibration parameters (referring to Fig. 3, Fig. 4) of real-time input, judges the duty of building structure.
2, concrete operations are as follows:
(1) determines that building structure especially closes on when collapsing and the corresponding relation of vibration parameters at the different operating state under the fire.According to a large amount of test figures, determine this corresponding relation.
(2), determine the unique point of vibration-testing, and carry out the laying of vibration transducer according to the building structure characteristics.Pillar middle part and top, the span centre of beam, and 1/4,1/2 the striding of plate, the vibration characteristics at these positions needs stress test.For adapting to hot environment, need sensor is carried out certain technical finesse.In the bottom of sensor, sizeable heat-barrier material need be set, to protect sensor operate as normal at high temperature.All need be fixed well between heat-barrier material and buildings and heat-barrier material thereof and the sensor, guarantee the condition of following of normal operation of sensor.
(3) test of building construction vibration characteristic.Utilize through the vibration transducer of technical finesse and the signal amplifier and the intelligent signal collection Treatment Analysis instrument of adapted thereof.Instrument is all selected general getting final product on the market for use.The parameter of test is mainly amplitude ratio, frequency ratio, damping ratio and acceleration.
(4) the vibration parameters relation corresponding with the building structure duty, input is the Control Software of establishment voluntarily, as the judgment criterion of prediction building structure duty.
(5) utilize computing machine, the vibration parameters that records in real time in the fire process is continuously judged, draw building structure and whether close on and collapse, and send early warning.
Claims (2)
1, a kind of building structure collapse vibration when fire hazard supervising device, the signal that it is characterized in that its involving vibrations sensor, connection vibration transducer amplifies filtering system, connects signal acquiring processing system and the monitoring unit that is connected signal acquiring processing system that signal amplifies filtering system, signal amplifies filtering system and comprises interconnective signal amplifier and signal filter, signal amplifier connects vibration transducer, signal filter connects signal acquiring processing system, and vibration transducer is arranged on the building structural element.
2, building structure collapse vibration when fire hazard supervising device according to claim 1 is characterized in that described building structural element comprises pillar middle part and top, the span centre of beam, and 1/4,1/2 the striding of plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820090234XU CN201277903Y (en) | 2008-06-18 | 2008-06-18 | Vibration monitoring apparatus for building structure collapse in fire disaster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820090234XU CN201277903Y (en) | 2008-06-18 | 2008-06-18 | Vibration monitoring apparatus for building structure collapse in fire disaster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201277903Y true CN201277903Y (en) | 2009-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820090234XU Expired - Fee Related CN201277903Y (en) | 2008-06-18 | 2008-06-18 | Vibration monitoring apparatus for building structure collapse in fire disaster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201277903Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147231A (en) * | 2010-12-27 | 2011-08-10 | 深圳思量微系统有限公司 | Structural displacement monitoring sensor for building with steel structure |
| CN102169013A (en) * | 2010-12-27 | 2011-08-31 | 深圳思量微系统有限公司 | Structural displacement monitoring sensor for concrete steel building |
-
2008
- 2008-06-18 CN CNU200820090234XU patent/CN201277903Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147231A (en) * | 2010-12-27 | 2011-08-10 | 深圳思量微系统有限公司 | Structural displacement monitoring sensor for building with steel structure |
| CN102169013A (en) * | 2010-12-27 | 2011-08-31 | 深圳思量微系统有限公司 | Structural displacement monitoring sensor for concrete steel building |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090722 Termination date: 20100618 |