CN103604386A - Method and system for detecting wall shape variation and building - Google Patents
Method and system for detecting wall shape variation and building Download PDFInfo
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- CN103604386A CN103604386A CN201310643785.XA CN201310643785A CN103604386A CN 103604386 A CN103604386 A CN 103604386A CN 201310643785 A CN201310643785 A CN 201310643785A CN 103604386 A CN103604386 A CN 103604386A
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Abstract
Provided is a method for detecting wall shape variation. The method comprises the steps that at least two sensor elements and an optical fiber tension adjusting device are arranged on the upper portion of a main structure of a building to be monitored to form testing points; a building model is built according to the building to be monitored, and the testing points are connected with the built building model through an optical fiber server; the attribute variation of the arranged sensor elements is analyzed according to the optical fiber sever to obtain corresponding optical variable data, and the tension strength of all testing points on the main structure of the building to be monitored is calculated; the variation of the calculated tension strength of each testing point is analyzed, and variation corresponding to a wall shape is described on the building model according to a analysis result. According to the method for detecting wall shape variation, a sensing technology is used, trace distorted split information on a wall is detected and analyzed, the hidden danger of the building is output quickly and flexibly, and the problem that early warning of deformation hidden dangers is difficult to give out to an existing large-scale building reinforced wall structure is solved. In addition, the invention further provides a system for detecting wall shape variation and the building.
Description
Technical field
The present invention relates to safety detection technology, relate in particular to a kind of body of wall shape change detecting method, system and buildings thereof.
Background technology
A lot of buildings in reality, as mutilevel overpass etc. in large reservoir dam, large-scale office building building, highway overline bridge and urban district, in process of construction, a control to its quality has very strict national standard, and these buildingss are before coming into operation, strict quality inspection inspection is first carried out to it in capital, qualified just can come into operation afterwards.But, after once these buildingss come into operation, in use, the agent structure of building, usually due to non-artificial destructive factors such as disaster and external force sudden changes, causes a certain agent structure distortion as caused bridge soil erosion that bridge main body structure holding capacity is changed because of continuous rainwater weather; Because side building operation is sunk this major structure of construction, cause part agent structure distortion etc., cause building to exist hiding danger, severe patient may cause building body to collapse.Therefore, be badly in need of a kind of body of wall shape change detecting method, system and buildings thereof, buildings is carried out to safety detection, by monitoring, reduce disaster and external force sudden change to structural damage, reduce the loss therefore bringing, ensure urban safety.
Summary of the invention
In view of this, need provide a kind of fast, body of wall shape change detecting method flexibly, in main building is strengthened wall body structure, micro-distortion division information on strengthening body of wall is detected to analysis, solve the problem to the hiding danger early warning difficulty of existing heavy construction body strengthening wall body structure distortion.
Goal of the invention of the present invention is achieved through the following technical solutions:
A body of wall shape change detecting method, comprising: at least two sensor elements of major structure of construction deploy to be monitored and the optical fiber tension that is connected by optical fiber with described sensor element, form test point; According to building to be monitored, build building body model, described test point is connected with the building body model of structure by fiber optic service device; Attribute change on the sensor element that analysis is disposed according to described fiber optic service device obtains corresponding light variable data, calculates the tensile strength of each test point on major structure of construction to be monitored; Analyze the variation of the tensile strength of each test point of calculating, according to analysis result, on described building body model, depict the variation of corresponding body of wall shape.
Above-mentioned body of wall shape change detecting method, wherein: also comprise: when disposed Fibre Optical Sensor element being detected over test specification, adjust the optical fiber tension being connected with this Fibre Optical Sensor element optical fiber is carried out to the operation of bracing wire/unwrapping wire; Surpassing the parameter transmitting on the Fibre Optical Sensor of test specification, subtract/add adjustment.
Above-mentioned body of wall shape change detecting method, wherein: described at least two sensor elements of major structure of construction deploy to be monitored and the optical fiber tension that is connected by optical fiber with described sensor element, form test point and specifically comprise the metope that at least two sensor elements and the optical fiber tension that is connected by optical fiber with described sensor element is close to major structure of construction non-stress to be monitored, sealing is fixing.
Above-mentioned body of wall shape change detecting method, wherein: described major structure of construction to be monitored is perpend wall or at least two face walls; When building body to be monitored is perpend wall, each sensor element, optical fiber tension are connected in series, be the snakelike of " S " shape and be deployed on described perpend wall, each corner of " S " shape, all as transitional region, only disposes corresponding optical fiber tension and carries out transition on it; When building body to be monitored is at least two face walls, and the intersection body of wall of two face walls, when the position body of wall face angle of intersecting is excessive, the position body of wall of the intersection that described intersection body of wall or angle are excessive, as transition metope, is only disposed corresponding optical fiber tension and is carried out transition on it.
Above-mentioned body of wall shape change detecting method, wherein: described test point is connected with the building body model of structure by fiber optic service device and is specially described building body model and is connected by network with described fiber optic service device, and described fiber optic service device is connected by optical fiber with optical fiber puller system with disposed Fibre Optical Sensor element.
Above-mentioned body of wall shape change detecting method, wherein: according to building to be monitored, build building body model, attribute change on the described sensor element that analysis is disposed according to described fiber optic service device obtains corresponding light variable data, the tensile strength that calculates each test point on major structure of construction to be monitored specifically comprises: the light sensation wave parameter that disposed sensor element is returned by optical fiber transmission is analyzed, and obtains corresponding light variable data; According to obtained light variable data, derive wavelength variations; According to axially calculate the tensile strength of each test point to strain sensitivity formula and the wavelength variations of deriving.
In addition, the present invention also provides a kind of body of wall shape change detecting system, can detect fast, flexibly the change of shape in building body strengthening wall body structure, realizes building body safe early warning.
A body of wall shape change detecting system, comprises deployment module, model construction module, computing module and analysis module.Wherein, deployment module, at least two sensor elements of major structure of construction deploy to be monitored and the optical fiber tension that is connected by optical fiber with described sensor element, forms test point.Model construction module is for building building body model according to building to be monitored, and described test point is connected with the building body model of structure by fiber optic service device.Computing module obtains corresponding light variable data for the attribute change on the sensor element that analysis is disposed according to described fiber optic service device, calculates the tensile strength of each test point on major structure of construction to be monitored.Analysis module, for analyzing the variation of the tensile strength of each test point, is depicted the variation of corresponding body of wall shape on described building body model according to analysis result.
Above-mentioned body of wall shape change detecting system, wherein: also comprise optical fiber adjusting module and parameter adjustment module.Wherein, optical fiber adjusting module, for when disposed Fibre Optical Sensor element being detected over test specification, is adjusted the optical fiber tension being connected with this Fibre Optical Sensor element optical fiber is carried out to the operation of bracing wire/unwrapping wire.Parameter adjustment module is for subtracting/add adjustment surpassing the parameter transmitting on the Fibre Optical Sensor of test specification.
Above-mentioned body of wall shape change detecting system, wherein: computing module comprises light sensation wave parameter analytic unit, wavelength variations derivation unit and tension force computing unit.Light sensation wave parameter analytic unit is analyzed for the light sensation wave parameter that disposed sensor element is returned by optical fiber transmission, obtains corresponding light variable data.Wavelength variations derivation unit is for deriving wavelength variations according to obtained light variable data.Tension force computing unit axially calculates the tensile strength of each test point for basis to strain sensitivity formula and the wavelength variations of deriving.
Above-mentioned body of wall shape change detecting system, wherein: described optical fiber tension comprises hollow main body, be arranged on before optical fiber in described main body and export after outlet and optical fiber, two coaxial fiber optic coils axles that are arranged on described body interior, are all being wound around optical fiber on described fiber optic coils axle.
In addition, the present invention also provides a kind of buildings, can detect fast, flexibly the change of shape in building body strengthening wall body structure, realizes building body safe early warning.
A buildings, comprising: building body, and the above-mentioned body of wall shape change detecting system that described building body is carried out to safety monitoring.
Compared with prior art, body of wall shape change detecting method of the present invention, by using optical fiber tension that Fibre Optical Sensor element is successfully deployed on major structure of construction to be monitored, utilize the sensing technology of the Fibre Optical Sensor element of disposing, in main building strengthening wall body structure, to strengthening micro-distortion division information on body of wall, detect analysis, show intuitively the hiding danger of output building, fast, flexibly, solve the problem to the hiding danger early warning difficulty of existing heavy construction body strengthening wall body structure distortion.
Body of wall shape change detecting system of the present invention, by deployment module, Fibre Optical Sensor element, optical fiber tension are deployed on major structure of construction to be monitored, utilize sensing technology can detect fast, flexibly the change of shape in building body strengthening wall body structure, realize building body safe early warning.
Buildings of the present invention, passes through disposed body of wall shape change detecting system building body is carried out to safety detection, reduces disaster and external force sudden change to structural damage, reduces the loss therefore bringing, and ensures urban safety, realizes building body safe early warning.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of body of wall shape change detecting method of the present invention;
Fig. 2 is the deployment schematic diagram of a major structure of construction to be monitored in embodiment of the present invention;
Fig. 3 is the deployment schematic diagram of another major structure of construction to be monitored in embodiment of the present invention;
Fig. 4 is the deployment schematic diagram of another major structure of construction to be monitored in embodiment of the present invention;
Fig. 5 is the refinement process flow diagram of step S103 in Fig. 1;
Fig. 6 is the structural representation of body of wall shape change detecting system 1 of the present invention;
Fig. 7 is the structural representation of optical fiber tension of the present invention.
Embodiment
By describing technology contents of the present invention, structural attitude in detail, being realized object and effect, below in conjunction with embodiment and coordinate accompanying drawing to be explained in detail.
Figure 1 shows that the process flow diagram of body of wall shape change detecting method of the present invention.
Step S101, at least two sensor elements of major structure of construction deploy to be monitored and the optical fiber tension that is connected by optical fiber with sensor element, forms test point.
Because optical fiber itself is tiny, for stretching meeting significantly, optical fiber is caused to the situation of disconnection, the invention provides the optical fiber tension automatically regulating according to optical fiber tensile stress.By disposing and arrange the parameter of Fibre Optical Sensor element and optical fiber tension, reaching, focus fine length automatically and carry out flexible self-control, use that can fine protection optical fiber while making optical fiber measurement major structure of construction.
Consult Fig. 2, in embodiment of the present invention, at at least two sensor elements of major structure of construction deploy to be monitored and the optical fiber tension that is connected by optical fiber with sensor element, form test point and specifically comprise the metope that at least two sensor elements 101 and the optical fiber tension 102 that is connected by optical fiber with sensor element 101 is close to major structure of construction 100 non-stress to be monitored, sealing is fixing.
Between two optical fiber tensions 102, generally all can comprise a Fibre Optical Sensor element 101, and the distance between these two optical fiber tensions 102 is unsuitable long, generally refer in 5 meters, Fibre Optical Sensor element 101 is preferably positioned in the middle of this two tensions 102, and make can be parallel with the body of wall face of agent structure between every two nodes.
In embodiment of the present invention, some is four sides wall structure for major structure of construction to be monitored 100, and some is two sides wall construction, and some is perpend wall body structure.We,, when disposing sensor element 101, are the metopes that is deployed in non-stress.The metope of non-stress herein refers to the strengthening stressed opposite of body of wall, and as reservoir dam, the one side that dam stores water is stressed one side, and the one side that another side is non-stress, because of being subject to the impact of power, can making dam block the body distortion that is distorted and give prominence to.And for example bridge is the one side of running automobile or walker above, owing to being subject to the impact of gravity, object above can be carried out downward pressure to bridge, and our sensor element 101 is deployed in below bridge main body structure and just can carries out effective distortion division monitoring to monitored object like this.
Fibre Optical Sensor element 101 and optical fiber tension 102 adopt the method for being close to body of wall, and two optical fiber tensions 102 of each Fibre Optical Sensor element 101 configuration, can, to Fibre Optical Sensor element fixed position, can not be offset steering error like this.Simultaneously, Fibre Optical Sensor element 101 is when fixed installation, should be close to metope, and implement even axial restraint, sensor element 101 two connect optical fiber, be connected with optical fiber tension 102, and move towards layout with the agent structure body of the mode that fixedly slides to (this mode refers to by deployed fiber retaining element 103 between optical fiber tension 102 and Fibre Optical Sensor element 101, carrys out the trend of directed fixed fiber) fixed fiber.Until Fibre Optical Sensor element 101 and optical fiber, optical fiber tension 102, after the wiring of agent structure body, all conventionally need to seal processing, as encapsulated by use slot type.In embodiment of the present invention, sensor element 101 is fiber grating, its deployed position should be chosen in the place of agent structure body monitoring location most fragile or the position of holding capacity maximum conventionally, generally refers to agent structure body or the middle position of strengthening body of wall two nodes.
In embodiment of the present invention, for cost-saving, normally metope deploy sensor element and the optical fiber tension of the non-stress of the major structure of construction to be monitored such as mutilevel overpass in bearing wall, highway overline bridge and the urban district of large reservoir dam hurdle body, large-scale office building building.
Certainly, in other embodiment of the present invention, when not considering cost, also can on the metope of the non-stress of all buildings, all dispose sensor element and optical fiber tension carries out safety detection.
Figure 3 shows that the deployment schematic diagram of another major structure of construction to be monitored of the present invention.In embodiment of the present invention, building body 200 to be monitored is perpend walls, as reservoir dam hurdle body.While disposing, each sensor element 201, optical fiber tension 202 are connected in series, being the snakelike of " S " shape is deployed on perpend wall (dam hurdle body), each corner of " S " shape, all as transitional region 204, only disposes corresponding optical fiber tension 202 and carries out transition on it.
Figure 4 shows that the deployment schematic diagram of another major structure of construction to be monitored of the present invention.In embodiment of the present invention, building body to be monitored has at least two face walls.As shown in Figure 4, intersection body of wall when two face walls, when the position body of wall face angle of intersecting is excessive, the position body of wall of the intersection that intersection body of wall or angle are excessive, as transition metope (being transitional region 304), only being disposed corresponding optical fiber tension 302 and is carried out transition on it.
Step S102, builds building body model according to building to be monitored, and test point is connected with the building body model of structure by fiber optic service device.
In embodiment of the present invention, building building body model can adopt the configuration mode that the building supervisory system of installing on monitoring indoor host computer provides to set up BUILDINGS MODELS, configuration mode herein refers to control and the self-defining equipment control that building supervisory system provides the foundation, by these controls, mode with combination, assemble at the interface that need to monitor building to be monitored, constructs building body model.Certainly, also can set up by importing the mode of a configuration file building body model of building to be monitored.
After building body model is set up, also need the parameter of this building body model to be configured, BUILDINGS MODELS and test point are carried out associated, and then make to build dangerous information and can feed back intuitively on building body model.Concrete operations are, according to the Practical Project deployment scenario of major structure of construction to be monitored, find the corresponding agent structure of building body model, and the information of drawing in agent structure shows control.The corresponding control that shows of configuration on the interface of drawing in the building body model referring to having set up herein, wherein, shows that control comprises that data message shows that control, color are described control, warning message shows control and the abnormal shifting function control of model.Then configuration information shows the parameter of control one by one.Therefore, according to the condition of construction of building to be monitored, on the building body model building, each test point is all carried out to the configuration of control, make building body model and test point energy real time correlation after configuration.
In embodiment of the present invention, according to building to be monitored, build building body model, test point is connected with the building body model of structure and is specifically comprised that building body model is connected by network with fiber optic service device by fiber optic service device, and fiber optic service device is connected by optical fiber with optical fiber puller system with disposed Fibre Optical Sensor element.
Step S103, the attribute change on the sensor element that analysis is disposed according to fiber optic service device obtains corresponding light variable data, calculates the tensile strength of each test point on major structure of construction to be monitored.
Because the sensor element in the present embodiment is fiber grating, so the present embodiment is to utilize fiber grating sensing technology to calculate the tensile strength of each test point.Fiber grating is to utilize the photosensitivity of optical fiber to be made, and has formed space phase grating in fibre core, is actually the catoptron that forms an arrowband in fibre core, makes the dissemination of light in optical fiber be changed and control.The space phase grating that fiber grating forms in fiber core, refractive index is along fiber axis to being periodic distribution, theoretical according to the coupling model of fiber grating, fiber grating is by being coupled between the fibre core pattern of fl transmission and the fibre core pattern of backward transmission, and the energy that makes the fibre core pattern of fl transmission passes to the fibre core pattern of backward transmission, form incident wave reflection.
If fiber grating is subject to the strain variation of optical fiber, according to the photosensitivity of optical fiber, the variation of strain can both cause the drift of foveal reflex wavelength, and the variation in fiber grating cycle and consequent elasto-optical effect have changed effective refractive index.Therefore, fiber grating sensing technology is exactly by the variation of inspection center's reflection wavelength, just to derive the variation of strain.
Step S104, analyzes the variation of the tensile strength of each test point of calculating, depicts the variation of corresponding body of wall shape according to analysis result on building body model.
In embodiment of the present invention, because the attribute change on sensor element is the dynamics that reacting part is deployed in the even axial tension of Fibre Optical Sensor element quilt on major structure of construction to be monitored, can be defined as the situation of the building structure body deformability of disposing this sensor element.By long monitoring, and historical data analysis, we can obtain under the effect of this agent structure because of time or external force, the distortion division situation of bearing.Then, utilize the color in the building body model of having set up to describe the variation that the modes such as control, warning message demonstration control and the abnormal shifting function control of model are depicted corresponding body of wall shape, whether dangerous to judge this agent structure, reach the object of early warning.Wherein, the variation of depicting corresponding body of wall shape on building body model comprises the distortion of building, the description of the division of agent structure, main structural component hazard level and abnormal color are described and start warning function.Wherein, distortion is all reflection each major structure of construction destroyed degree with division, but distortion or division will arrange according to building materials.
Concrete operations are, by the coordinate of control and the length attribute of control in the building body model of having set up, to regulate position and the distortion of control.The corresponding agent structure of building body model is carried out to describing of color, and each structure of this model is carried out to abnormal shifting function, the effect that presenting of making that BUILDINGS MODELS can the be vivider danger that building may hide produces, with obvious mode display alarm information, preserve corresponding alarm log simultaneously simultaneously.
Therefore, body of wall shape change detecting method of the present invention, by using optical fiber tension that Fibre Optical Sensor element is successfully deployed on major structure of construction to be monitored, utilize the sensing technology of the Fibre Optical Sensor element of disposing, in main building strengthening wall body structure, to strengthening micro-distortion division information on body of wall, detect analysis, show intuitively the hiding danger of output building, fast, flexibly, solve the problem to the hiding danger early warning difficulty of existing heavy construction body strengthening wall body structure distortion.
In addition, in other embodiment of the present invention, this body of wall shape change detecting method also comprises: when disposed Fibre Optical Sensor element being detected over test specification, adjust the optical fiber tension being connected with this Fibre Optical Sensor element optical fiber is carried out to the operation of bracing wire/unwrapping wire; Surpassing the parameter transmitting on the Fibre Optical Sensor of test specification, subtract/add adjustment.By optical fiber tension optical fiber, carry out bracing wire/unwrapping wire and operate, be conducive to better protect the optical fiber that is deployed in major structure of construction to be monitored place normally to use.
Specifically, optical fiber tension of the present invention is in order to protect optical fiber can not cause because pulling force is excessive optical fiber to disconnect design, by optical fiber tension, can also carry out grade analysis to optical fiber pulling force, as the pulling force arriving when Fibre Optical Sensor element test surpasses a certain grade, the optical fiber tension on both sides can synchronously coordinate the optical fiber of convergent-divergent certain length, make optical fiber be returned to normal condition, levels characteristic herein is generally divided into two aspects, a upper lower limit value that refers to the measuring fiber of deployment, be defined as the test effective range of optical fiber, generally refer in the test specification of Fibre Optical Sensor element, such as: the test specification value of certain Fibre Optical Sensor element is-1P to 6P, we are-0.8P to 5P at operated by rotary motion optical fiber upper lower limit value, optimum value is 1P.When the Monitoring Data detecting reaches 5P, we will regulate optical fiber tension, optical fiber is carried out to unwrapping wire operation, make the test value of optical fiber reach the scope of 1P, promote a grade simultaneously, if during be less than-0.8P of the Monitoring Data collecting, we will regulate optical fiber tension, optical fiber is carried out to bracing wire operation, make the test value of optical fiber again reach the scope of 1P, reduce a grade simultaneously.The data that obtain for test, every liter of grade, will add the operation of 5P to original data, on the contrary, often fall a grade, all can subtract to original data the operation of 5P.
Figure 5 shows that the refinement process flow diagram of step S103 in Fig. 1.
Step S1031, the light sensation wave parameter that disposed sensor element is returned by optical fiber transmission is analyzed, and obtains corresponding light variable data.
Conventionally, sensor-based system is by being connected to form by optical fiber by least two sensor elements and sensing server, in embodiment of the present invention, sensor element is fiber grating, as sensing unit, the structure of fiber grating only includes fibre core and covering, in research light communication process, we ignore the impact of surrounding layer, affect extremely little because of this this.And fiber grating is generally to be made by quartz material, be desirable elastic body, follow Hooke theorem, and inside does not have shear strain.The photosensitive variations in refractive index being caused by ultraviolet light is uniformly distributed on cross section of optic fibre, and this photon-induced refractive index changes and not affect the isotropic characteristic of optical fiber itself, that is to say that optical fiber grid region still meets the feature of the multiple degeneracy of elastic constant.
Sensor element according to extraneous because usually changing light at the attribute of fiber medium communication process; Such as: due to extraneous pulling force effect, the shape of fiber grating is changed, light is in spread fiber process, and the centre wavelength of light is drifted about, and makes the center wavelength of light that transfers back to sensing server be greater than the wavelength of test under normal circumstances.In embodiment of the present invention, all light variable data are all to obtain from fiber optic service device.The light sensation wave parameter that fiber optic service device is returned by optical fiber transmission to disposed sensor element is analyzed, and obtains corresponding light variable data, and light variable data wherein comprises Δ L and Δ U.Wherein, Δ L represents the axial stretching amount of optical fiber.Δ U represents the variation of the fibre diameter that caused by axial tension.
Step S1032, derives wavelength variations according to obtained light variable data.
That is, according to Δ L and Δ U, derive wavelength variations.In embodiment of the present invention, can pass through formula: Δ λ=2 Λ (A* Δ L+B* Δ U) obtains wavelength variation data.In formula, Δ λ is wavelength variations, and Δ L is the axial stretching amount of the optical fiber that obtains in step S1031, and Δ U is the variation of the fibre diameter being caused by axial tension that obtains in step S1031, and A represents elasto-optical effect, and B represents waveguiding effect.A wherein, B all belong to the attribute of optical fiber.
Step S1033, according to axially calculate the tensile strength of each test point to strain sensitivity formula and the wavelength variations of deriving.
The tensile strength of each test point that embodiment of the present invention calculates is even axial stress.Evenly axial stress is to produce by fiber grating is carried out to axial tension or compression, and now each stress can be expressed as σ=-P (P is additional pressure), and there is no tangential stress.
Embodiment of the present invention, to strain sensitivity formula is axially:
(Δ λ/λ)=(1 – P) C; Wherein, the centre wavelength that λ is fiber grating, C is specific inductive capacity ,-P is to stress.
And fiber bragg grating center wavelength λ=2n Λ; Wherein, n is effective refractive index, and Λ is the fiber grating cycle.
Owing to being the relation of acting force and reacting force to stress and tensile strength, therefore, according to axially to strain sensitivity formula and the wavelength variations Δ λ that derives, can calculate each test point to stress-P, thereby obtain the tensile strength of each test point.
Figure 6 shows that the structural representation of body of wall shape change detecting system 1 of the present invention, it comprises deployment module 11, model construction module 12, computing module 13 and analysis module 14.
Consult the structural representation that Fig. 7 is optical fiber tension of the present invention, it comprises hollow main body 1021, be arranged on before optical fiber in main body 1021 and export 1023 after outlet 1022 and optical fiber, two coaxial fiber optic coils axles 1024 that are arranged on main body 1021 inside, are all being wound around optical fiber 1025 on fiber optic coils axle 1024.
In embodiment of the present invention; the rear outlet 1023 of the front outlet 1022 of optical fiber, optical fiber is provided with respectively optical fiber protective tube (not indicating in figure); be used for preventing that optical fiber is excessive and with equipment, excessive friction occurs, the effect of playing protection optical fiber and optical fiber being gone out with fixed-direction because angle changes at drawing process.Again, the rear outlet 1023 of the front outlet of optical fiber 1022, optical fiber can connect one end of two sensor elements respectively, or connects before the optical fiber of another optical fiber puller system and export after outlet/optical fiber.The building supervisory system of installing on monitoring indoor host computer can be carried out by network the setting of grade bound to optical fiber tension, if reach these limit values, device can regulate fiber optic coils axle 1023 to rotate automatically, reaches the zoom function to optical fiber 1025.
Because optical fiber itself is tiny, for stretching meeting significantly, optical fiber is caused to the situation of disconnection, the invention provides the optical fiber tension automatically regulating according to optical fiber tensile stress.By disposing and arrange the parameter of Fibre Optical Sensor element and optical fiber tension, reaching, focus fine length automatically and carry out flexible self-control, use that can fine protection optical fiber while making optical fiber measurement major structure of construction.
In embodiment of the present invention, computing module 13 comprises that light sensation wave parameter analytic unit 131, wavelength variations derivation unit 132 and tension force computing unit 133(consult Fig. 6).Wherein, light sensation wave parameter analytic unit 131 is analyzed for the light sensation wave parameter that disposed sensor element is returned by optical fiber transmission, obtains corresponding light variable data.Wavelength variations derivation unit 132 is for deriving wavelength variations according to obtained light variable data.Tension force computing unit 133 axially calculates the tensile strength of each test point for basis to strain sensitivity formula and the wavelength variations of deriving.
In embodiment of the present invention, the light sensation wave parameter that fiber optic service device is returned by optical fiber transmission to disposed sensor element is analyzed, and obtains corresponding light variable data Δ L and Δ U.Wherein, Δ L represents the axial stretching amount of optical fiber.Δ U represents the variation of the fibre diameter that caused by axial tension.Then, according to Δ L and Δ U, by formula: Δ λ=2 Λ (A* Δ L+B* Δ U), obtain wavelength variation data Δ λ.Wherein, A represents elasto-optical effect, and B represents waveguiding effect, all belongs to the attribute of optical fiber.Finally, according to axially to strain sensitivity formula (Δ λ/λ)=(1 – P) C calculate each test point to stress-P, thereby obtain the tensile strength of each test point.
In addition, in other embodiment of the present invention, this system also comprises optical fiber adjusting module and parameter adjustment module.Wherein, optical fiber adjusting module, for when disposed Fibre Optical Sensor element being detected over test specification, is adjusted the optical fiber tension being connected with this Fibre Optical Sensor element optical fiber is carried out to the operation of bracing wire/unwrapping wire.Parameter adjustment module is for subtracting/add adjustment surpassing the parameter transmitting on the Fibre Optical Sensor of test specification.
Specifically, the pulling force arriving when Fibre Optical Sensor element test surpasses a certain grade, the optical fiber tension on both sides can synchronously coordinate the optical fiber of convergent-divergent certain length, make optical fiber be returned to normal condition, levels characteristic herein is generally divided into two aspects, a upper lower limit value that refers to the measuring fiber of deployment, be defined as the test effective range of optical fiber, generally refer in the test specification of Fibre Optical Sensor element, such as: the test specification value of certain Fibre Optical Sensor element is-1P to 6P, we are-0.8P to 5P at operated by rotary motion optical fiber upper lower limit value, optimum value is 1P.When the Monitoring Data detecting reaches 5P, we will regulate optical fiber tension, optical fiber is carried out to unwrapping wire operation, make the test value of optical fiber reach the scope of 1P, promote a grade simultaneously, if during be less than-0.8P of the Monitoring Data collecting, we will regulate optical fiber tension, optical fiber is carried out to bracing wire operation, make the test value of optical fiber again reach the scope of 1P, reduce a grade simultaneously.The data that obtain for test, every liter of grade, will add the operation of 5P to original data, on the contrary, often fall a grade, all can subtract to original data the operation of 5P.
Therefore, body of wall shape change detecting system of the present invention, by deployment module, Fibre Optical Sensor element, optical fiber tension are deployed on major structure of construction to be monitored, utilize sensing technology can detect fast, flexibly the change of shape in building body strengthening wall body structure, realize building body safe early warning.
In addition, the present invention also provides a kind of buildings, and this buildings comprises: building body, and the body of wall shape change detecting system that building body is carried out to safety monitoring.In embodiment of the present invention, the structure of this body of wall shape change detecting system as shown in Figure 6, repeats no more herein.
Buildings of the present invention, passes through disposed body of wall shape change detecting system building body is carried out to safety detection, reduces disaster and external force sudden change to structural damage, reduces the loss therefore bringing, and ensures urban safety, realizes building body safe early warning.
These are only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes instructions of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (11)
1. a body of wall shape change detecting method, is characterized in that, comprising:
At at least two sensor elements of major structure of construction deploy to be monitored and the optical fiber tension that is connected by optical fiber with described sensor element, form test point;
According to building to be monitored, build building body model, described test point is connected with the building body model of structure by fiber optic service device;
Attribute change on the sensor element that analysis is disposed according to described fiber optic service device obtains corresponding light variable data, calculates the tensile strength of each test point on major structure of construction to be monitored; And
Analyze the variation of the tensile strength of each test point of calculating, according to analysis result, on described building body model, depict the variation of corresponding body of wall shape.
2. body of wall shape change detecting method according to claim 1, is characterized in that, also comprises:
When disposed Fibre Optical Sensor element being detected over test specification, adjust the optical fiber tension being connected with this Fibre Optical Sensor element optical fiber is carried out to the operation of bracing wire/unwrapping wire; And
Surpassing the parameter transmitting on the Fibre Optical Sensor of test specification, subtract/add adjustment.
3. body of wall shape change detecting method according to claim 1 and 2, it is characterized in that, described at least two sensor elements of major structure of construction deploy to be monitored and the optical fiber tension that is connected by optical fiber with described sensor element, form test point and specifically comprise the metope that at least two sensor elements and the optical fiber tension that is connected by optical fiber with described sensor element is close to major structure of construction non-stress to be monitored, sealing is fixing.
4. body of wall shape change detecting method according to claim 3, is characterized in that, described major structure of construction to be monitored is perpend wall or at least two face walls;
When building body to be monitored is perpend wall, each sensor element, optical fiber tension are connected in series, be the snakelike of " S " shape and be deployed on described perpend wall, each corner of " S " shape, all as transitional region, only disposes corresponding optical fiber tension and carries out transition on it;
When building body to be monitored is at least two face walls, and the intersection body of wall of two face walls, when the position body of wall face angle of intersecting is excessive, the position body of wall of the intersection that described intersection body of wall or angle are excessive, as transition metope, is only disposed corresponding optical fiber tension and is carried out transition on it.
5. body of wall shape change detecting method according to claim 1 and 2, it is characterized in that, according to building to be monitored, build building body model, described test point is connected with the building body model of structure by fiber optic service device and specifically comprises that described building body model is connected by network with described fiber optic service device, and described fiber optic service device is connected by optical fiber with optical fiber puller system with disposed Fibre Optical Sensor element.
6. body of wall shape change detecting method according to claim 1 and 2, it is characterized in that, attribute change on the described sensor element that analysis is disposed according to described fiber optic service device obtains corresponding light variable data, and the tensile strength that calculates each test point on major structure of construction to be monitored specifically comprises:
The light sensation wave parameter that disposed sensor element is returned by optical fiber transmission is analyzed, and obtains corresponding light variable data;
According to obtained light variable data, derive wavelength variations; And
According to axially calculate the tensile strength of each test point to strain sensitivity formula and the wavelength variations of deriving.
7. a body of wall shape change detecting system, is characterized in that, comprising:
Deployment module, at least two sensor elements of major structure of construction deploy to be monitored and the optical fiber tension that is connected by optical fiber with described sensor element, forms test point;
Model construction module, for building building body model according to building to be monitored, described test point is connected with the building body model of structure by fiber optic service device;
Computing module, obtains corresponding light variable data for the attribute change on the sensor element that analysis is disposed according to described fiber optic service device, calculates the tensile strength of each test point on major structure of construction to be monitored; And
Analysis module for analyzing the variation of the tensile strength of each test point, is depicted the variation of corresponding body of wall shape on described building body model according to analysis result.
8. body of wall shape change detecting system according to claim 7, is characterized in that, also comprises:
Optical fiber adjusting module, for when disposed Fibre Optical Sensor element being detected over test specification, adjusts the optical fiber tension being connected with this Fibre Optical Sensor element optical fiber is carried out to the operation of bracing wire/unwrapping wire; And
Parameter adjustment module, for subtracting/add adjustment surpassing the parameter transmitting on the Fibre Optical Sensor of test specification.
9. according to the body of wall shape change detecting system described in claim 7 or 8, it is characterized in that, described computing module comprises:
Light sensation wave parameter analytic unit, analyzes for the light sensation wave parameter that disposed sensor element is returned by optical fiber transmission, obtains corresponding light variable data;
Wavelength variations derivation unit, for deriving wavelength variations according to obtained light variable data; And
Tension force computing unit, axially calculates the tensile strength of each test point for basis to strain sensitivity formula and the wavelength variations of deriving.
10. according to the body of wall shape change detecting system described in claim 7 or 8, it is characterized in that, described optical fiber tension comprises hollow main body, be arranged on before optical fiber in described main body and export after outlet and optical fiber, two coaxial fiber optic coils axles that are arranged on described body interior, are all being wound around optical fiber on described fiber optic coils axle.
11. 1 kinds of buildingss, is characterized in that, described buildings comprises: building body, and the body of wall shape change detecting system as described in claim 7 to 10 any one that described building body is carried out to safety monitoring.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651224A (en) * | 2016-03-22 | 2016-06-08 | 韦醒妃 | Real-time earth-rock dam body monitoring system with waste slag field arranged behind dam |
| CN105807685A (en) * | 2016-03-22 | 2016-07-27 | 韦醒妃 | Intelligent monitoring type curtain wall system |
| CN108613700A (en) * | 2018-05-31 | 2018-10-02 | 中国计量大学 | A kind of building inclination angle and Oscillation Amplitude detection device and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003254723A (en) * | 2002-03-01 | 2003-09-10 | Tokyo Electric Power Services Co Ltd | Measuring instrument for measuring distortion quantity of structure |
-
2013
- 2013-12-03 CN CN201310643785.XA patent/CN103604386B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003254723A (en) * | 2002-03-01 | 2003-09-10 | Tokyo Electric Power Services Co Ltd | Measuring instrument for measuring distortion quantity of structure |
Non-Patent Citations (3)
| Title |
|---|
| PM NELLEN.ETC: "application of fiber and resistance strain gauges for long-term surveillance of civil engineering structures", 《SPIE》 * |
| 代运水等: "分布式光纤传感技术在冶勒大坝心墙基座裂缝监测中的应用实践", 《大坝与安全》 * |
| 吴伟豪等: "一种基于光纤Bragg光栅传感器的挡土墙变形监测技术", 《传感器与微系统》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651224A (en) * | 2016-03-22 | 2016-06-08 | 韦醒妃 | Real-time earth-rock dam body monitoring system with waste slag field arranged behind dam |
| CN105807685A (en) * | 2016-03-22 | 2016-07-27 | 韦醒妃 | Intelligent monitoring type curtain wall system |
| CN105807685B (en) * | 2016-03-22 | 2017-12-08 | 泰兴市城东绿化工程有限公司 | A kind of intelligent monitor-type curtain wall system |
| CN105651224B (en) * | 2016-03-22 | 2018-07-03 | 江苏南京地质工程勘察院 | The earth and rockfill dam dam body real-time monitoring system of Dumping Sites is set behind dam |
| CN108613700A (en) * | 2018-05-31 | 2018-10-02 | 中国计量大学 | A kind of building inclination angle and Oscillation Amplitude detection device and method |
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| CN103604386B (en) | 2017-01-25 |
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