CN105841661A - Bridge dynamic health real-time monitoring device - Google Patents

Abstract

The invention discloses a bridge dynamic health real-time monitoring device. The monitoring device includes a monitoring module, data processing module, a security state evaluation module, an early warning and alarm module and a simulation display module, wherein the monitoring module includes a wireless sensor network, a strain sensor assembly and a displacement sensor, the data processing module includes a collection center station, a signal conditioner and a signal transmission device, the security state evaluation module includes a microprocessor, the early warning and alarm module includes an analysis processor and an alarm, and the simulation display module includes a 3D GIS simulation platform. According to the bridge dynamic health real-time monitoring device of the invention, the sensors are applied to the bridge health monitoring filed, and therefore, real-time monitoring on the health of a bridge can be realized, and the remaining life of the structure of the bridge can be monitored according to monitoring data. The bridge dynamic health real-time monitoring device is unprecedentedly advantageous in full coverage and around-the-clock monitoring.

Description

A kind of bridge dynamical health real-time monitoring device

Technical field

The present invention relates to bridge health monitoring field, be specifically related to a kind of bridge dynamical health real-time monitoring device.

Background technology

Urban Bridge is the important composition of urban traffic trunk line, and the quality of bridge maintenance is directly connected to the safety of urban transportation with smooth Logical.Urban architecture is more and more intensive, more and more higher, is the trend of urban development.Due to uncontrollable disasters such as natural geology Or the disasters such as during artificially building by laying, bridge, building easily occur rupturing, shift, inclination.This disaster is unpredictalbe, Can bring immeasurable life and property loss, the monitoring to bridge and the health status of building is highly important thing Feelings.

But existing bridge monitoring sensor great majority cannot be according to the residual life of the data prediction bridge structure of monitoring.This Defect causes bridge inspection and maintenance personnel to need the correlation experience by oneself to judge the data that sensor is fed back, and reduces and ties bridge The promptness of structure monitoring, also considerably increases the workload of bridge inspection and maintenance personnel simultaneously.

Summary of the invention

For the problems referred to above, the present invention provides a kind of bridge dynamical health real-time monitoring device.

The purpose of the present invention realizes by the following technical solutions:

A kind of bridge dynamical health real-time monitoring device, this device includes monitoring modular, data processing module, security state evaluation Module, early warning and alarming module and emulation display module.

(1) monitoring modular, including the wireless sensor network being monitored bridge structure health, for monitoring each danger of bridge The strain sensor assemblies at position and displacement transducer, bridge health structure is monitored by described wireless sensor network all standing, Meanwhile, network uses advanced physical message emerging system, the real-time perception to bridge health structure；Institute's displacement sensors with For monitoring the working base point of dangerous position change in displacement and carrying out based on the overall datum mark checking working base point stability Three dimensions displacement monitoring, each dangerous position of described bridge, working base point and overall situation datum mark are by carrying out finite element to bridge Sunykatuib analysis determines；Described strain sensor assemblies includes performance parameters and completely identical in structure work strain transducer and temperature It is arranged at structure after degree compensation strain transducer, described work strain transducer and the series connection of temperature-compensating strain transducer On each dangerous position；

(2) data processing module, it includes that the data gathering central station, collecting collection central station carry out nursing one's health processing and amplifying Signal conditioner and the signal transmitting apparatus that transmits of data that signal conditioner is processed；

(3) security state evaluation module, described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, institute State the average displacement that the displacement data transmitted by signal transmitting apparatus is carried out being calculated between two time phase t by microprocessor Difference, the most first to compensate displacement difference owing to bridge exists phenomenon of expanding with heat and contract with cold, then by average displacement difference and regulation displacement Difference limen value compares, it is judged that described average displacement difference is the most in a safe condition, and according to the prison of strain sensor assemblies 24h Survey data to calculate, obtain stress amplitude spectrum, according to the remanent fatigue life of stress amplitude spectrum computation structure, and by tired for described residue The labor life-span compares with structure projected life, it is judged that described remanent fatigue life is the most in a safe condition；

A, average displacement w_(i)Computing formula be:

Wherein, taking 0.5h is sampling time interval, max&min_(i+t)For the maximum in the displacement data of previous time phase and Minimum sum, max&min_(i+2t)For the maximum in the displacement data in latter time stage and minimum sum；

B, setting the coefficient of expansion as α, revised average displacement is:

${\mathrm{\Δs}}^{\′}=\mathrm{\Δ}s-\frac{{\mathrm{\α}}_1{a}_1+{\mathrm{\α}}_2{a}_2+...+{\mathrm{\α}}_n{a}_n}{n}(T-T_0)$

Wherein, α₁, α₂..., α_nFor each construction material temperature expansion coefficient, a₁, a₂..., a_nFor coefficient, T is selected Mean temperature in time period, T₀For bridge location year-round average temperature.

C, the judgment formula of described life-span security evaluation be:

Work as σ_x(i)≥σ_bTime,

$A=\frac{1}{365\·\underset{i}{\overset{n}{\Σ}}\[\frac{p_i}{{10}^7}\·{\left(\frac{{\mathrm{\σ}}_x\left(i\right)}{{\mathrm{\σ}}_b}\right)}^k\]}-T_B$

Work as σ_x(i)<σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^{k+2}\&rsqb;}-T_B$

Wherein, σ_bFor the structural fatigue limit, σ_xFor the hot spot stress range of each monitoring point, k is that the slope of fatigue curve is reciprocal, p_i For the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFatigue life is designed for structure, in actual applications, Can be affected by bridge overload, be therefore dynamically change, and along with the change of overload natural law is a nonlinear process,T_AFatigue life, d is designed for initiating structure_zRepresent the total natural law of bridge, d_gRepresent bridge overload natural law；When A is more than 0, it is determined that structural life-time is in a safe condition, when A is less than or equal to 0, defeated Go out alarm signal；

(4) early warning and alarming module, it includes for preventing the analysis processor of false alarm, alarm and information database of record, The input of described analysis processor connects described microprocessor, and the outfan of analysis processor connects described alarm；

(5) emulation display module, including the three-dimension GIS emulation platform being connected with microprocessor, described three-dimension GIS emulation platform The assessment result of security state evaluation module is carried out emulation display, the health status of simulation bridge structure, and simulation process is:

D, utilize finite element software to carry out after the modeling of bridge to import GIS platform, build the model of bridge different component respectively, The locus of each bridge member is adjusted in GIS platform；

E, by different shape the symbols each dangerous position of analog information bridge, strain sensor assemblies and displacement in GIS platform Sensor；

The color that the dangerous position being not at safe condition is specified by f, result according to safe condition module estimation is in GIS platform Interface on show.

The invention have the benefit that and connected by the structure of modules, it is achieved the full-automatic monitoring that structure dynamics is healthy, Be easy to personnel pinpoint the problems early, solution problem；Propose and carry out bridge health structure monitoring with wireless sensor network, cover Extensively, real-time；Propose fatigue life safety judgment formula, decrease the workload of calculating, improve the work of monitoring device Make efficiency；Propose the computing formula of average displacement, and average displacement is corrected, use average displacement and displacement threshold Value compares judgement, decreases the workload of calculating；Pair of strain sensors carries out temperature-compensating, improves the measurement essence of strain Degree, and then improve the overall measurement accuracy of device；Utilize the health status of GIS emulation platform simulation bridge structure, have good The good effect carrying out interface alternation with user.

Accompanying drawing explanation

The invention will be further described to utilize accompanying drawing, but the embodiment in accompanying drawing does not constitute any limitation of the invention, for Those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtains the attached of other according to the following drawings Figure.

Fig. 1 is the structured flowchart of the present invention.

Detailed description of the invention

The invention will be further described with the following Examples.

Embodiment 1: a kind of bridge dynamical health real-time monitoring device as shown in Figure 1, this device includes monitoring modular, data Processing module, security state evaluation module, early warning and alarming module and emulation display module.

(1) monitoring modular, including the wireless sensor network being monitored bridge structure health, for monitoring each danger of bridge The strain sensor assemblies at position and displacement transducer, bridge health structure is monitored by described wireless sensor network all standing, Meanwhile, network uses advanced physical message emerging system, the real-time perception to bridge health structure；Institute's displacement sensors with For monitoring the working base point of dangerous position change in displacement and carrying out based on the overall datum mark checking working base point stability Three dimensions displacement monitoring, each dangerous position of described bridge, working base point and overall situation datum mark are by carrying out finite element to bridge Sunykatuib analysis determines；Described strain sensor assemblies includes performance parameters and completely identical in structure work strain transducer and temperature It is arranged at structure after degree compensation strain transducer, described work strain transducer and the series connection of temperature-compensating strain transducer On each dangerous position；

(2) data processing module, it includes that the data gathering central station, collecting collection central station carry out nursing one's health processing and amplifying Signal conditioner and the signal transmitting apparatus that transmits of data that signal conditioner is processed；

(3) security state evaluation module；

(4) early warning and alarming module, it includes for preventing the analysis processor of false alarm, alarm and information database of record, The input of described analysis processor connects described microprocessor, and the outfan of analysis processor connects described alarm；

(5) emulation display module, including the three-dimension GIS emulation platform being connected with microprocessor, described three-dimension GIS emulation platform The assessment result of security state evaluation module is carried out emulation display, the health status of simulation bridge structure, and simulation process is:

A, utilize finite element software to carry out after the modeling of bridge to import GIS platform, build the model of bridge different component respectively, The locus of each bridge member is adjusted in GIS platform；

B, by different shape the symbols each dangerous position of analog information bridge, strain sensor assemblies and displacement in GIS platform Sensor；

The color that the dangerous position being not at safe condition is specified by c, result according to safe condition module estimation is in GIS platform Interface on show.

Described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, and described microprocessor will be transmitted by signal The displacement data average displacement that carries out being calculated between two time phase t that device transmits is poor, and due to bridge, to there is flatulence of heat type cold Displacement difference the most first to be compensated by contracting phenomenon, then average displacement difference is compared with regulation displacement difference limen value, it is judged that institute State average displacement difference the most in a safe condition, and calculate according to the Monitoring Data of strain sensor assemblies 24h, answered Power width is composed, and according to the remanent fatigue life of stress amplitude spectrum computation structure, and is entered projected life with structure by described remanent fatigue life Row compares, it is judged that described remanent fatigue life is the most in a safe condition；

A, average displacement w_(i)Computing formula be:

Wherein, taking 0.5h is sampling time interval, max&min_(i+t)For the maximum in the displacement data of previous time phase and Minimum sum, max&min_(i+2t)For the maximum in the displacement data in latter time stage and minimum sum；

B, setting the coefficient of expansion as α, revised average displacement is:

${\mathrm{\&Delta;s}}^{\&prime;}=\mathrm{\&Delta;}s-\frac{{\mathrm{\&alpha;}}_1{a}_1+{\mathrm{\&alpha;}}_2{a}_2+...+{\mathrm{\&alpha;}}_n{a}_n}{n}(T-T_0)$

Wherein, α₁, α₂..., α_nFor each construction material temperature expansion coefficient, a₁, a₂..., a_nFor coefficient, T is selected Mean temperature in time period, T₀For bridge location year-round average temperature.

C, the judgment formula of described life-span security evaluation be:

Work as σ_x(i)≥σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^k\&rsqb;}-T_B$

Work as σ_x(i)<σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^{k+2}\&rsqb;}-T_B$

Wherein, σ_bFor the structural fatigue limit, σ_xFor the hot spot stress range of each monitoring point, k is that the slope of fatigue curve is reciprocal, p_i For the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFatigue life is designed for structure, in actual applications, Can be affected by bridge overload, be therefore dynamically change, and along with the change of overload natural law is a nonlinear process,T_AFatigue life, d is designed for initiating structure_zRepresent the total natural law of bridge, d_gRepresent bridge overload natural law；When A is more than 0, it is determined that structural life-time is in a safe condition, when A is less than or equal to 0, defeated Go out alarm signal.

In this embodiment, connected by the structure of modules, it is achieved that the full-automatic monitoring that structure dynamics is healthy, it is simple to Personnel pinpoint the problems early, solution problem；Propose and carry out bridge health structure monitoring with wireless sensor network, cover wide, Real-time；Propose fatigue life safety judgment formula, decrease the workload of calculating, improve the work effect of monitoring device Rate；Propose the computing formula of average displacement, and average displacement is corrected, use average displacement to enter with displacement threshold value Row multilevel iudge, decreases the workload of calculating；Pair of strain sensors carries out temperature-compensating, improves the certainty of measurement of strain, And then improve the overall measurement accuracy of device；Utilize the health status of GIS emulation platform simulation bridge structure, have good With the effect that user carries out interface alternation；Time phase t=24h, it is achieved that the full-automatic monitoring of bridge structure dynamical health, The overall measurement accuracy of device improves 15%.

Embodiment 2: a kind of bridge dynamical health real-time monitoring device as shown in Figure 1, this device includes monitoring modular, data Processing module, security state evaluation module, early warning and alarming module and emulation display module.

(1) monitoring modular, including the wireless sensor network being monitored bridge structure health, for monitoring each danger of bridge The strain sensor assemblies at position and displacement transducer, bridge health structure is monitored by described wireless sensor network all standing, Meanwhile, network uses advanced physical message emerging system, the real-time perception to bridge health structure；Institute's displacement sensors with For monitoring the working base point of dangerous position change in displacement and carrying out based on the overall datum mark checking working base point stability Three dimensions displacement monitoring, each dangerous position of described bridge, working base point and overall situation datum mark are by carrying out finite element to bridge Sunykatuib analysis determines；Described strain sensor assemblies includes performance parameters and completely identical in structure work strain transducer and temperature It is arranged at structure after degree compensation strain transducer, described work strain transducer and the series connection of temperature-compensating strain transducer On each dangerous position；

(2) data processing module, it includes that the data gathering central station, collecting collection central station carry out nursing one's health processing and amplifying Signal conditioner and the signal transmitting apparatus that transmits of data that signal conditioner is processed；

(3) security state evaluation module；

(4) early warning and alarming module, it includes for preventing the analysis processor of false alarm, alarm and information database of record, The input of described analysis processor connects described microprocessor, and the outfan of analysis processor connects described alarm；

(5) emulation display module, including the three-dimension GIS emulation platform being connected with microprocessor, described three-dimension GIS emulation platform The assessment result of security state evaluation module is carried out emulation display, the health status of simulation bridge structure, and simulation process is:

A, utilize finite element software to carry out after the modeling of bridge to import GIS platform, build the model of bridge different component respectively, The locus of each bridge member is adjusted in GIS platform；

B, by different shape the symbols each dangerous position of analog information bridge, strain sensor assemblies and displacement in GIS platform Sensor；

The color that the dangerous position being not at safe condition is specified by c, result according to safe condition module estimation is in GIS platform Interface on show.

Described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, and described microprocessor will be transmitted by signal The displacement data average displacement that carries out being calculated between two time phase t that device transmits is poor, and due to bridge, to there is flatulence of heat type cold Displacement difference the most first to be compensated by contracting phenomenon, then average displacement difference is compared with regulation displacement difference limen value, it is judged that institute State average displacement difference the most in a safe condition, and calculate according to the Monitoring Data of strain sensor assemblies 24h, answered Power width is composed, and according to the remanent fatigue life of stress amplitude spectrum computation structure, and is entered projected life with structure by described remanent fatigue life Row compares, it is judged that described remanent fatigue life is the most in a safe condition；

A, average displacement w_(i)Computing formula be:

Wherein, taking 0.5h is sampling time interval, max&min_(i+t)For the maximum in the displacement data of previous time phase and Minimum sum, max&min_(i+2t)For the maximum in the displacement data in latter time stage and minimum sum；

B, setting the coefficient of expansion as α, revised average displacement is:

${\mathrm{\&Delta;s}}^{\&prime;}=\mathrm{\&Delta;}s-\frac{{\mathrm{\&alpha;}}_1{a}_1+{\mathrm{\&alpha;}}_2{a}_2+\mathrm{...}+{\mathrm{\&alpha;}}_n{a}_n}{n}(T-T_0)$

Wherein, α₁, α₂..., α_nFor each construction material temperature expansion coefficient, a₁, a₂..., a_nFor coefficient, T is selected Mean temperature in time period, T₀For bridge location year-round average temperature.

C, the judgment formula of described life-span security evaluation be:

Work as σ_x(i)≥σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^k\&rsqb;}-T_B$

Work as σ_x(i)<σ_bTime,

$A=\frac{1}{365\&CenterDot;\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^{k+2}\&rsqb;}-T_B$

Wherein, σ_bFor the structural fatigue limit, σ_xFor the hot spot stress range of each monitoring point, k is that the slope of fatigue curve is reciprocal, p_i For the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFatigue life is designed for structure, in actual applications, Can be affected by bridge overload, be therefore dynamically change, and along with the change of overload natural law is a nonlinear process,T_AFatigue life, d is designed for initiating structure_zRepresent the total natural law of bridge, d_gRepresent bridge overload natural law；When A is more than 0, it is determined that structural life-time is in a safe condition, when A is less than or equal to 0, defeated Go out alarm signal.

In this embodiment, connected by the structure of modules, it is achieved that the full-automatic monitoring that structure dynamics is healthy, it is simple to Personnel pinpoint the problems early, solution problem；Propose and carry out bridge health structure monitoring with wireless sensor network, cover wide, Real-time；Propose fatigue life safety judgment formula, decrease the workload of calculating, improve the work effect of monitoring device Rate；Propose the computing formula of average displacement, and average displacement is corrected, use average displacement to enter with displacement threshold value Row multilevel iudge, decreases the workload of calculating；Pair of strain sensors carries out temperature-compensating, improves the certainty of measurement of strain, And then improve the overall measurement accuracy of device；Utilize the health status of GIS emulation platform simulation bridge structure, have good With the effect that user carries out interface alternation；Time phase t=28h, it is achieved that the full-automatic monitoring of bridge structure dynamical health, The overall measurement accuracy of device improves 17%.

Embodiment 3: a kind of bridge dynamical health real-time monitoring device as shown in Figure 1, this device includes monitoring modular, data Processing module, security state evaluation module, early warning and alarming module and emulation display module.

(1) monitoring modular, including the wireless sensor network being monitored bridge structure health, for monitoring each danger of bridge The strain sensor assemblies at position and displacement transducer, bridge health structure is monitored by described wireless sensor network all standing, Meanwhile, network uses advanced physical message emerging system, the real-time perception to bridge health structure；Institute's displacement sensors with For monitoring the working base point of dangerous position change in displacement and carrying out based on the overall datum mark checking working base point stability Three dimensions displacement monitoring, each dangerous position of described bridge, working base point and overall situation datum mark are by carrying out finite element to bridge Sunykatuib analysis determines；Described strain sensor assemblies includes performance parameters and completely identical in structure work strain transducer and temperature It is arranged at structure after degree compensation strain transducer, described work strain transducer and the series connection of temperature-compensating strain transducer On each dangerous position；

(2) data processing module, it includes that the data gathering central station, collecting collection central station carry out nursing one's health processing and amplifying Signal conditioner and the signal transmitting apparatus that transmits of data that signal conditioner is processed；

(3) security state evaluation module；

(4) early warning and alarming module, it includes for preventing the analysis processor of false alarm, alarm and information database of record, The input of described analysis processor connects described microprocessor, and the outfan of analysis processor connects described alarm；

(5) emulation display module, including the three-dimension GIS emulation platform being connected with microprocessor, described three-dimension GIS emulation platform The assessment result of security state evaluation module is carried out emulation display, the health status of simulation bridge structure, and simulation process is:

A, utilize finite element software to carry out after the modeling of bridge to import GIS platform, build the model of bridge different component respectively, The locus of each bridge member is adjusted in GIS platform；

B, by different shape the symbols each dangerous position of analog information bridge, strain sensor assemblies and displacement in GIS platform Sensor；

The color that the dangerous position being not at safe condition is specified by c, result according to safe condition module estimation is in GIS platform Interface on show.

Described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, and described microprocessor will be transmitted by signal The displacement data average displacement that carries out being calculated between two time phase t that device transmits is poor, and due to bridge, to there is flatulence of heat type cold Displacement difference the most first to be compensated by contracting phenomenon, then average displacement difference is compared with regulation displacement difference limen value, it is judged that institute State average displacement difference the most in a safe condition, and calculate according to the Monitoring Data of strain sensor assemblies 24h, answered Power width is composed, and according to the remanent fatigue life of stress amplitude spectrum computation structure, and is entered projected life with structure by described remanent fatigue life Row compares, it is judged that described remanent fatigue life is the most in a safe condition；

A, average displacement w_(i)Computing formula be:

Wherein, taking 0.5h is sampling time interval, max&min_(i+t)For the maximum in the displacement data of previous time phase and Minimum sum, max&min_(i+2t)For the maximum in the displacement data in latter time stage and minimum sum；

B, setting the coefficient of expansion as α, revised average displacement is:

${\mathrm{\&Delta;s}}^{\&prime;}=\mathrm{\&Delta;}s-\frac{{\mathrm{\&alpha;}}_1{a}_1+{\mathrm{\&alpha;}}_2{a}_2+...+{\mathrm{\&alpha;}}_n{a}_n}{n}(T-T_0)$

Wherein, α₁, α₂..., α_nFor each construction material temperature expansion coefficient, a₁, a₂..., a_nFor coefficient, T is selected Mean temperature in time period, T₀For bridge location year-round average temperature.

C, the judgment formula of described life-span security evaluation be:

Work as σ_x(i)≥σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^k\&rsqb;}-T_B$

Work as σ_x(i)<σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^{k+2}\&rsqb;}-T_B$

Wherein, σ_bFor the structural fatigue limit, σ_xFor the hot spot stress range of each monitoring point, k is that the slope of fatigue curve is reciprocal, p_i For the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFatigue life is designed for structure, in actual applications, Can be affected by bridge overload, be therefore dynamically change, and along with the change of overload natural law is a nonlinear process,T_AFatigue life, d is designed for initiating structure_zRepresent the total natural law of bridge, d_gRepresent bridge overload natural law；When A is more than 0, it is determined that structural life-time is in a safe condition, when A is less than or equal to 0, defeated Go out alarm signal.

In this embodiment, connected by the structure of modules, it is achieved that the full-automatic monitoring that structure dynamics is healthy, it is simple to Personnel pinpoint the problems early, solution problem；Propose and carry out bridge health structure monitoring with wireless sensor network, cover wide, Real-time；Propose fatigue life safety judgment formula, decrease the workload of calculating, improve the work effect of monitoring device Rate；Propose the computing formula of average displacement, and average displacement is corrected, use average displacement to enter with displacement threshold value Row multilevel iudge, decreases the workload of calculating；Pair of strain sensors carries out temperature-compensating, improves the certainty of measurement of strain, And then improve the overall measurement accuracy of device；Utilize the health status of GIS emulation platform simulation bridge structure, have good With the effect that user carries out interface alternation；Time phase t=32h, it is achieved that the full-automatic monitoring of bridge structure dynamical health, The overall measurement accuracy of device improves 18%.

Embodiment 4: a kind of bridge dynamical health real-time monitoring device as shown in Figure 1, this device includes monitoring modular, data Processing module, security state evaluation module, early warning and alarming module and emulation display module.

(1) monitoring modular, including the wireless sensor network being monitored bridge structure health, for monitoring each danger of bridge The strain sensor assemblies at position and displacement transducer, bridge health structure is monitored by described wireless sensor network all standing, Meanwhile, network uses advanced physical message emerging system, the real-time perception to bridge health structure；Institute's displacement sensors with For monitoring the working base point of dangerous position change in displacement and carrying out based on the overall datum mark checking working base point stability Three dimensions displacement monitoring, each dangerous position of described bridge, working base point and overall situation datum mark are by carrying out finite element to bridge Sunykatuib analysis determines；Described strain sensor assemblies includes performance parameters and completely identical in structure work strain transducer and temperature It is arranged at structure after degree compensation strain transducer, described work strain transducer and the series connection of temperature-compensating strain transducer On each dangerous position；

(2) data processing module, it includes that the data gathering central station, collecting collection central station carry out nursing one's health processing and amplifying Signal conditioner and the signal transmitting apparatus that transmits of data that signal conditioner is processed；

(3) security state evaluation module；

(4) early warning and alarming module, it includes for preventing the analysis processor of false alarm, alarm and information database of record, The input of described analysis processor connects described microprocessor, and the outfan of analysis processor connects described alarm；

(5) emulation display module, including the three-dimension GIS emulation platform being connected with microprocessor, described three-dimension GIS emulation platform The assessment result of security state evaluation module is carried out emulation display, the health status of simulation bridge structure, and simulation process is:

A, utilize finite element software to carry out after the modeling of bridge to import GIS platform, build the model of bridge different component respectively, The locus of each bridge member is adjusted in GIS platform；

B, by different shape the symbols each dangerous position of analog information bridge, strain sensor assemblies and displacement in GIS platform Sensor；

The color that the dangerous position being not at safe condition is specified by c, result according to safe condition module estimation is in GIS platform Interface on show.

Described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, and described microprocessor will be transmitted by signal The displacement data average displacement that carries out being calculated between two time phase t that device transmits is poor, and due to bridge, to there is flatulence of heat type cold Displacement difference the most first to be compensated by contracting phenomenon, then average displacement difference is compared with regulation displacement difference limen value, it is judged that institute State average displacement difference the most in a safe condition, and calculate according to the Monitoring Data of strain sensor assemblies 24h, answered Power width is composed, and according to the remanent fatigue life of stress amplitude spectrum computation structure, and is entered projected life with structure by described remanent fatigue life Row compares, it is judged that described remanent fatigue life is the most in a safe condition；

A, average displacement w_(i)Computing formula be:

Wherein, taking 0.5h is sampling time interval, max&min_(i+t)For the maximum in the displacement data of previous time phase and Minimum sum, max&min_(i+2t)For the maximum in the displacement data in latter time stage and minimum sum；

B, setting the coefficient of expansion as α, revised average displacement is:

${\mathrm{\&Delta;s}}^{\&prime;}=\mathrm{\&Delta;}s-\frac{{\mathrm{\&alpha;}}_1{a}_1+{\mathrm{\&alpha;}}_2{a}_2+...+{\mathrm{\&alpha;}}_n{a}_n}{n}(T-T_0)$

Wherein, α₁, α₂..., α_nFor each construction material temperature expansion coefficient, a₁, a₂..., a_nFor coefficient, T is selected Mean temperature in time period, T₀For bridge location year-round average temperature.

C, the judgment formula of described life-span security evaluation be:

Work as σ_x(i)≥σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^k\&rsqb;}-T_B$

Work as σ_x(i)<σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^{k+2}\&rsqb;}-T_B$

Wherein, σ_bFor the structural fatigue limit, σ_xFor the hot spot stress range of each monitoring point, k is that the slope of fatigue curve is reciprocal, p_i For the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFatigue life is designed for structure, in actual applications, Can be affected by bridge overload, be therefore dynamically change, and along with the change of overload natural law is a nonlinear process,T_AFatigue life, d is designed for initiating structure_zRepresent the total natural law of bridge, d_gRepresent bridge overload natural law；When A is more than 0, it is determined that structural life-time is in a safe condition, when A is less than or equal to 0, defeated Go out alarm signal.

In this embodiment, connected by the structure of modules, it is achieved that the full-automatic monitoring that structure dynamics is healthy, it is simple to Personnel pinpoint the problems early, solution problem；Propose and carry out bridge health structure monitoring with wireless sensor network, cover wide, Real-time；Propose fatigue life safety judgment formula, decrease the workload of calculating, improve the work effect of monitoring device Rate；Propose the computing formula of average displacement, and average displacement is corrected, use average displacement to enter with displacement threshold value Row multilevel iudge, decreases the workload of calculating；Pair of strain sensors carries out temperature-compensating, improves the certainty of measurement of strain, And then improve the overall measurement accuracy of device；Utilize the health status of GIS emulation platform simulation bridge structure, have good With the effect that user carries out interface alternation；Time phase t=36h, it is achieved that the full-automatic monitoring of bridge structure dynamical health, The overall measurement accuracy of device improves 20%.

Embodiment 5: a kind of bridge dynamical health real-time monitoring device as shown in Figure 1, this device includes monitoring modular, data Processing module, security state evaluation module, early warning and alarming module and emulation display module.

(1) monitoring modular, including the wireless sensor network being monitored bridge structure health, for monitoring each danger of bridge The strain sensor assemblies at position and displacement transducer, bridge health structure is monitored by described wireless sensor network all standing, Meanwhile, network uses advanced physical message emerging system, the real-time perception to bridge health structure；Institute's displacement sensors with For monitoring the working base point of dangerous position change in displacement and carrying out based on the overall datum mark checking working base point stability Three dimensions displacement monitoring, each dangerous position of described bridge, working base point and overall situation datum mark are by carrying out finite element to bridge Sunykatuib analysis determines；Described strain sensor assemblies includes performance parameters and completely identical in structure work strain transducer and temperature It is arranged at structure after degree compensation strain transducer, described work strain transducer and the series connection of temperature-compensating strain transducer On each dangerous position；

(2) data processing module, it includes that the data gathering central station, collecting collection central station carry out nursing one's health processing and amplifying Signal conditioner and the signal transmitting apparatus that transmits of data that signal conditioner is processed；

(3) security state evaluation module；

(4) early warning and alarming module, it includes for preventing the analysis processor of false alarm, alarm and information database of record, The input of described analysis processor connects described microprocessor, and the outfan of analysis processor connects described alarm；

(5) emulation display module, including the three-dimension GIS emulation platform being connected with microprocessor, described three-dimension GIS emulation platform The assessment result of security state evaluation module is carried out emulation display, the health status of simulation bridge structure, and simulation process is:

A, utilize finite element software to carry out after the modeling of bridge to import GIS platform, build the model of bridge different component respectively, The locus of each bridge member is adjusted in GIS platform；

B, by different shape the symbols each dangerous position of analog information bridge, strain sensor assemblies and displacement in GIS platform Sensor；

The color that the dangerous position being not at safe condition is specified by c, result according to safe condition module estimation is in GIS platform Interface on show.

Described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, and described microprocessor will be transmitted by signal The displacement data average displacement that carries out being calculated between two time phase t that device transmits is poor, and due to bridge, to there is flatulence of heat type cold Displacement difference the most first to be compensated by contracting phenomenon, then average displacement difference is compared with regulation displacement difference limen value, it is judged that institute State average displacement difference the most in a safe condition, and calculate according to the Monitoring Data of strain sensor assemblies 24h, answered Power width is composed, and according to the remanent fatigue life of stress amplitude spectrum computation structure, and is entered projected life with structure by described remanent fatigue life Row compares, it is judged that described remanent fatigue life is the most in a safe condition；

A, average displacement w_(i)Computing formula be:

Wherein, taking 0.5h is sampling time interval, max&min_(i+t)For the maximum in the displacement data of previous time phase and Minimum sum, max&min_(i+2t)For the maximum in the displacement data in latter time stage and minimum sum；

B, setting the coefficient of expansion as α, revised average displacement is:

${\mathrm{\&Delta;s}}^{\&prime;}=\mathrm{\&Delta;}s-\frac{{\mathrm{\&alpha;}}_1{a}_1+{\mathrm{\&alpha;}}_2{a}_2+...+{\mathrm{\&alpha;}}_n{a}_n}{n}(T-T_0)$

Wherein, α₁, α₂..., α_nFor each construction material temperature expansion coefficient, a₁, a₂..., a_nFor coefficient, T is selected Mean temperature in time period, T₀For bridge location year-round average temperature.

C, the judgment formula of described life-span security evaluation be:

Work as σ_x(i)≥σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^k\&rsqb;}-T_B$

Work as σ_x(i)<σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^{k+2}\&rsqb;}-T_B$

Wherein, σ_bFor the structural fatigue limit, σ_xFor the hot spot stress range of each monitoring point, k is that the slope of fatigue curve is reciprocal, p_i For the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFatigue life is designed for structure, in actual applications, Can be affected by bridge overload, be therefore dynamically change, and along with the change of overload natural law is a nonlinear process,T_AFatigue life, d is designed for initiating structure_zRepresent the total natural law of bridge, d_gRepresent bridge overload natural law；When A is more than 0, it is determined that structural life-time is in a safe condition, when A is less than or equal to 0, defeated Go out alarm signal.

In this embodiment, connected by the structure of modules, it is achieved that the full-automatic monitoring that structure dynamics is healthy, it is simple to Personnel pinpoint the problems early, solution problem；Propose and carry out bridge health structure monitoring with wireless sensor network, cover wide, Real-time；Propose fatigue life safety judgment formula, decrease the workload of calculating, improve the work effect of monitoring device Rate；Propose the computing formula of average displacement, and average displacement is corrected, use average displacement to enter with displacement threshold value Row multilevel iudge, decreases the workload of calculating；Pair of strain sensors carries out temperature-compensating, improves the certainty of measurement of strain, And then improve the overall measurement accuracy of device；Utilize the health status of GIS emulation platform simulation bridge structure, have good With the effect that user carries out interface alternation；Time phase t=40h, it is achieved that the full-automatic monitoring of bridge structure dynamical health, The overall measurement accuracy of device improves 21%.

Last it should be noted that, above example is only in order to illustrate technical scheme, rather than to scope Restriction, although having made to explain to the present invention with reference to preferred embodiment, it will be understood by those within the art that, Technical scheme can be modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention.

Claims (1)

1. a bridge dynamical health real-time monitoring device, for bridge health is carried out dynamic monitoring, is characterized in that, including:

(1) monitoring modular, including the wireless sensor network being monitored bridge structure health, for monitoring each danger of bridge The strain sensor assemblies at position and displacement transducer, bridge health structure is monitored by described wireless sensor network all standing, Meanwhile, network uses advanced physical message emerging system, the real-time perception to bridge health structure；Institute's displacement sensors with For monitoring the working base point of dangerous position change in displacement and carrying out based on the overall datum mark checking working base point stability Three dimensions displacement monitoring, each dangerous position of described bridge, working base point and overall situation datum mark are by carrying out finite element to bridge Sunykatuib analysis determines；Described strain sensor assemblies includes performance parameters and completely identical in structure work strain transducer and temperature It is arranged at structure after degree compensation strain transducer, described work strain transducer and the series connection of temperature-compensating strain transducer On each dangerous position；

(2) data processing module, it includes that the data gathering central station, collecting collection central station carry out nursing one's health processing and amplifying Signal conditioner and the signal transmitting apparatus that transmits of data that signal conditioner is processed；

(3) security state evaluation module, described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, institute State the average displacement that the displacement data transmitted by signal transmitting apparatus is carried out being calculated between two time phase t by microprocessor Difference, the most first to compensate displacement difference owing to bridge exists phenomenon of expanding with heat and contract with cold, then by average displacement difference and regulation displacement Difference limen value compares, it is judged that described average displacement difference is the most in a safe condition, and according to the prison of strain sensor assemblies 24h Survey data to calculate, obtain stress amplitude spectrum, according to the remanent fatigue life of stress amplitude spectrum computation structure, and by tired for described residue The labor life-span compares with structure projected life, it is judged that described remanent fatigue life is the most in a safe condition；

A, average displacement w_(i)Computing formula be:

Wherein, taking 0.5h is sampling time interval, max&min_(i+t)For the maximum in the displacement data of previous time phase and Minimum sum, max&min_(i+2t)For the maximum in the displacement data in latter time stage and minimum sum；

B, setting the coefficient of expansion as α, revised average displacement is:

${\mathrm{\&Delta;s}}^{\&prime;}=\mathrm{\&Delta;}s-\frac{{\mathrm{\&alpha;}}_1{a}_1+{\mathrm{\&alpha;}}_2{a}_2+...+{\mathrm{\&alpha;}}_n{a}_n}{n}(T-T_0)$

Wherein, α₁, α₂..., α_nFor each construction material temperature expansion coefficient, a₁, a₂..., a_nFor coefficient, T is selected Mean temperature in time period, T₀For bridge location year-round average temperature.

C, the judgment formula of described life-span security evaluation be:

Work as σ_x(i)≥σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^k\&rsqb;}-T_B$

Work as σ_x(i)<σ_bTime,

$A=\frac{1}{365\&CenterDot;\underset{i}{\overset{n}{\&Sigma;}}\&lsqb;\frac{p_i}{{10}^7}\&CenterDot;{\left(\frac{{\mathrm{\&sigma;}}_x\left(i\right)}{{\mathrm{\&sigma;}}_b}\right)}^{k+2}\&rsqb;}-T_B$

Wherein, σ_bFor the structural fatigue limit, σ_xFor the hot spot stress range of each monitoring point, k is that the slope of fatigue curve is reciprocal, p_i For the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFatigue life is designed for structure, in actual applications, Can be affected by bridge overload, be therefore dynamically change, and along with the change of overload natural law is a nonlinear process,T_AFatigue life, d is designed for initiating structure_zRepresent the total natural law of bridge, d_gRepresent bridge overload natural law；When A is more than 0, it is determined that structural life-time is in a safe condition, when A is less than or equal to 0, defeated Go out alarm signal；

(4) early warning and alarming module, it includes for preventing the analysis processor of false alarm, alarm and information database of record, The input of described analysis processor connects described microprocessor, and the outfan of analysis processor connects described alarm；

(5) emulation display module, including the three-dimension GIS emulation platform being connected with microprocessor, described three-dimension GIS emulation platform The assessment result of security state evaluation module is carried out emulation display, the health status of simulation bridge structure, and simulation process is:

A, utilize finite element software to carry out after the modeling of bridge to import GIS platform, build the model of bridge different component respectively, The locus of each bridge member is adjusted in GIS platform；

B, by different shape the symbols each dangerous position of analog information bridge, strain sensor assemblies and displacement in GIS platform Sensor；

The color that the dangerous position being not at safe condition is specified by c, result according to safe condition module estimation is in GIS platform Interface on show.