CN105783821A - Joint cofferdam health prediction system under complex geological condition - Google Patents

Abstract

The invention discloses a joint cofferdam health prediction system under a complex geological condition. The system comprises a monitoring module, a data processing module, a safety state assessment module, an early warning alarm module and a simulation display module. The monitoring module comprises a wireless sensor network, a strain sensor assembly and a displacement sensor. The data processing module comprises an acquisition center station, a signal conditioner and a signal transmission device. The safety state assessment module comprises a microprocessor. The early warning alarm module comprises an analysis processor and an alarm. The simulation display module comprises a three-dimensional GIS simulation platform. The system realizes real-time monitoring on health of a joint cofferdam structure under the complex geological condition, and can predict the residual life of the joint cofferdam structure under the complex geological condition according to the monitoring data, thereby reaching an unprecedented level on the aspect of full-coverage all-weather monitoring.

Description

Combined cofferdam health forecast system under complex geological condition

Technical field

The present invention relates to cofferdam structure health monitoring field, be specifically related to the combined cofferdam health forecast system under complex geological condition.

Background technology

Combined cofferdam structure in correlation technique, it is subsection setup agent on crack resistance of concrete sliding pile section and fore shaft steel pipe pile cutoff in complete cycle cofferdam, connects with the afterbody fore shaft steel-pipe pile in described fore shaft steel pipe pile cutoff and front end fore shaft steel-pipe pile respectively with the front end agent on crack resistance of concrete sliding pile in described agent on crack resistance of concrete sliding pile section and afterbody agent on crack resistance of concrete sliding pile and is constituted the complete cycle cofferdam closed.

Combined cofferdam structure under above-mentioned complex geological condition carries out health monitoring typically via monitoring sensor, but sensor great majority cannot according to the residual life of this combined cofferdam structure of data prediction of monitoring.This defect causes that the correlation experience that the combined cofferdam structural maintenance personnel under complex geological condition require over oneself judges the data that sensor feeds back, reduce the promptness to the combined cofferdam structure monitoring under complex geological condition, also considerably increase the workload of combined cofferdam structural maintenance personnel under complex geological condition simultaneously.

Summary of the invention

For the problems referred to above, the present invention provides the combined cofferdam health forecast system under complex geological condition.

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

Combined cofferdam health forecast system under complex geological condition, including:

(1) monitoring modular, including the wireless sensor network that the combined cofferdam structural health under complex geological condition is monitored, for monitoring strain sensor assemblies and the displacement transducer of each dangerous position of combined cofferdam structure under complex geological condition, combined cofferdam structural health structure under complex geological condition is monitored by described wireless sensor network all standing, simultaneously, network adopts advanced physical message emerging system, the real-time perception to the combined cofferdam structural health structure under complex geological condition；Institute's displacement sensors is for the working base point of monitoring dangerous position change in displacement and carries out three dimensions displacement monitoring based on the overall datum mark of working base point stability for checking, and each dangerous position of the combined cofferdam structure under described complex geological condition, working base point and overall situation datum mark are determined by the combined cofferdam structure under complex geological condition is carried out FEM Simulation；Described strain sensor assemblies includes performance parameters and completely identical in structure work strain transducer and temperature-compensating strain transducer, on each dangerous position of described work strain transducer and the combined cofferdam structure that is arranged under complex geological condition after the series connection of temperature-compensating strain transducer；

(2) data processing module, it includes gathering central station, to gathering the signal conditioner that data of collecting of central station carry out conditioning processing and amplifying and the signal transmitting apparatus that the data that signal conditioner is processed is transmitted；

(3) security state evaluation module, described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, the average displacement that the displacement data transmitted by signal transmitting apparatus is calculated obtaining between two time phase t by described microprocessor is poor, therefore first displacement difference is compensated owing to the combined cofferdam structure under complex geological condition exists phenomenon of expanding with heat and contract with cold, then average displacement difference is compared with regulation displacement difference limen value, judge that whether described average displacement difference is in a safe condition, and the Monitoring Data according to strain sensor assemblies 24h is calculated, obtain stress amplitude spectrum, the remanent fatigue life of computation structure is composed according to stress amplitude, and described remanent fatigue life and structural design life-span are compared, judge that whether described remanent fatigue life is 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:

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

Wherein, α₁, α₂..., α_nFor the material temperature coefficient of expansion of each dangerous position, a₁, a₂..., a_nFor coefficient, T is mean temperature in section seclected time, T₀For the combined cofferdam structure location year-round average temperature under complex geological condition.

C, described life-span security evaluation judgment formula 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, the slope that k is fatigue curve is reciprocal, p_iFor the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFor structural design fatigue life, in actual applications, can be affected by the combined cofferdam structural overload under complex geological condition, be therefore dynamically change, and along with overload uses the change of natural law to be a nonlinear process,T_AFatigue life, d is designed for initiating structure_zRepresent that the combined cofferdam structure overall design under complex geological condition uses natural law, d_gRepresent that the combined cofferdam structural overload under complex geological condition uses 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, output alarm signal；

(4) early warning and alarming module, it includes for preventing the analysis processor of false alarm, alarm and information database of record, and 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, the assessment result of security state evaluation module is carried out emulation display, the health status of the combined cofferdam structure under Simulation of Complex geological conditions by described three-dimension GIS emulation platform, and simulation process is:

D, finite element software is utilized to import GIS platform after carrying out the modeling of combined cofferdam structure under complex geological condition, build the model of combined cofferdam structure different component under complex geological condition respectively, GIS platform adjusts the locus of combined cofferdam structural elements under each complex geological condition；

E, by different shape the symbols each dangerous position of combined cofferdam structure under analog information complex geological condition, strain sensor assemblies and displacement transducer in GIS platform；

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

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, it is simple to personnel pinpoint the problems early, solution problem；Propose the health monitoring carrying out combined cofferdam structure under complex geological condition with wireless sensor network, cover wide, real-time；Propose fatigue life safety judgment formula, decrease the workload of calculating, improve the work efficiency of monitoring system；Propose the computing formula of average displacement, and average displacement is corrected, adopt average displacement and displacement threshold value to compare judgement, decrease the workload of calculating；Pair of strain sensors carries out temperature-compensating, improves the certainty of measurement of strain, and then improves the overall measurement accuracy of monitoring system；Utilize the health status of combined cofferdam structure under GIS emulation platform Simulation of Complex geological conditions, there is 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, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to the following drawings.

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: the combined cofferdam health forecast system under complex geological condition as shown in Figure 1, comprising:

(1) monitoring modular, including the wireless sensor network that the combined cofferdam structural health under complex geological condition is monitored, for monitoring strain sensor assemblies and the displacement transducer of each dangerous position of combined cofferdam structure under complex geological condition, combined cofferdam structural health structure under complex geological condition is monitored by described wireless sensor network all standing, simultaneously, network adopts advanced physical message emerging system, the real-time perception to the combined cofferdam structural health structure under complex geological condition；Institute's displacement sensors is for the working base point of monitoring dangerous position change in displacement and carries out three dimensions displacement monitoring based on the overall datum mark of working base point stability for checking, and each dangerous position of the combined cofferdam structure under described complex geological condition, working base point and overall situation datum mark are determined by the combined cofferdam structure under complex geological condition is carried out FEM Simulation；Described strain sensor assemblies includes performance parameters and completely identical in structure work strain transducer and temperature-compensating strain transducer, on each dangerous position of described work strain transducer and the combined cofferdam structure that is arranged under complex geological condition after the series connection of temperature-compensating strain transducer；

(2) data processing module, it includes gathering central station, to gathering the signal conditioner that data of collecting of central station carry out conditioning processing and amplifying and the signal transmitting apparatus that the data that signal conditioner is processed is transmitted；

(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, and 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, the assessment result of security state evaluation module is carried out emulation display, the health status of the combined cofferdam structure under Simulation of Complex geological conditions by described three-dimension GIS emulation platform, and simulation process is:

A, finite element software is utilized to import GIS platform after carrying out the modeling of combined cofferdam structure under complex geological condition, build the model of combined cofferdam structure different component under complex geological condition respectively, GIS platform adjusts the locus of combined cofferdam structural elements under each complex geological condition；

B, by different shape the symbols each dangerous position of combined cofferdam structure under analog information complex geological condition, strain sensor assemblies and displacement transducer in GIS platform；

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

Described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, the average displacement that the displacement data transmitted by signal transmitting apparatus is calculated obtaining between two time phase t by described microprocessor is poor, therefore first displacement difference is compensated owing to the combined cofferdam structure under complex geological condition exists phenomenon of expanding with heat and contract with cold, then average displacement difference is compared with regulation displacement difference limen value, judge that whether described average displacement difference is in a safe condition, and the Monitoring Data according to strain sensor assemblies 24h is calculated, obtain stress amplitude spectrum, the remanent fatigue life of computation structure is composed according to stress amplitude, and described remanent fatigue life and structural design life-span are compared, judge that whether described remanent fatigue life is 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 the material temperature coefficient of expansion of each dangerous position, a₁, a₂..., a_nFor coefficient, T is mean temperature in section seclected time, T₀For the combined cofferdam structure location year-round average temperature under complex geological condition.

C, described life-span security evaluation judgment formula 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, the slope that k is fatigue curve is reciprocal, p_iFor the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFor structural design fatigue life, in actual applications, can be affected by the combined cofferdam structural overload under complex geological condition, be therefore dynamically change, and along with overload uses the change of natural law to be a nonlinear process,T_AFatigue life, d is designed for initiating structure_zRepresent that the combined cofferdam structure overall design under complex geological condition uses natural law, d_gRepresent that the combined cofferdam structural overload under complex geological condition uses 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, output 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 the health monitoring carrying out combined cofferdam structure under complex geological condition with wireless sensor network, cover wide, real-time；Propose fatigue life safety judgment formula, decrease the workload of calculating, improve the work efficiency of monitoring system；Propose the computing formula of average displacement, and average displacement is corrected, adopt average displacement and displacement threshold value to compare judgement, decrease the workload of calculating；Pair of strain sensors carries out temperature-compensating, improves the certainty of measurement of strain, and then improves the overall measurement accuracy of monitoring system；Utilize the health status of combined cofferdam structure under GIS emulation platform Simulation of Complex geological conditions, there is the good effect carrying out interface alternation with user；Time phase t=24h, it is achieved that the full-automatic monitoring that the combined cofferdam structure dynamics under complex geological condition is healthy, the overall measurement accuracy of monitoring system improves 15%.

Embodiment 2: the combined cofferdam health forecast system under complex geological condition as shown in Figure 1, comprising:

(1) monitoring modular, including the wireless sensor network that the combined cofferdam structural health under complex geological condition is monitored, for monitoring strain sensor assemblies and the displacement transducer of each dangerous position of combined cofferdam structure under complex geological condition, combined cofferdam structural health structure under complex geological condition is monitored by described wireless sensor network all standing, simultaneously, network adopts advanced physical message emerging system, the real-time perception to the combined cofferdam structural health structure under complex geological condition；Institute's displacement sensors is for the working base point of monitoring dangerous position change in displacement and carries out three dimensions displacement monitoring based on the overall datum mark of working base point stability for checking, and each dangerous position of the combined cofferdam structure under described complex geological condition, working base point and overall situation datum mark are determined by the combined cofferdam structure under complex geological condition is carried out FEM Simulation；Described strain sensor assemblies includes performance parameters and completely identical in structure work strain transducer and temperature-compensating strain transducer, on each dangerous position of described work strain transducer and the combined cofferdam structure that is arranged under complex geological condition after the series connection of temperature-compensating strain transducer；

(2) data processing module, it includes gathering central station, to gathering the signal conditioner that data of collecting of central station carry out conditioning processing and amplifying and the signal transmitting apparatus that the data that signal conditioner is processed is transmitted；

(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, and 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, the assessment result of security state evaluation module is carried out emulation display, the health status of the combined cofferdam structure under Simulation of Complex geological conditions by described three-dimension GIS emulation platform, and simulation process is:

A, finite element software is utilized to import GIS platform after carrying out the modeling of combined cofferdam structure under complex geological condition, build the model of combined cofferdam structure different component under complex geological condition respectively, GIS platform adjusts the locus of combined cofferdam structural elements under each complex geological condition；

B, by different shape the symbols each dangerous position of combined cofferdam structure under analog information complex geological condition, strain sensor assemblies and displacement transducer in GIS platform；

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

Described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, the average displacement that the displacement data transmitted by signal transmitting apparatus is calculated obtaining between two time phase t by described microprocessor is poor, therefore first displacement difference is compensated owing to the combined cofferdam structure under complex geological condition exists phenomenon of expanding with heat and contract with cold, then average displacement difference is compared with regulation displacement difference limen value, judge that whether described average displacement difference is in a safe condition, and the Monitoring Data according to strain sensor assemblies 24h is calculated, obtain stress amplitude spectrum, the remanent fatigue life of computation structure is composed according to stress amplitude, and described remanent fatigue life and structural design life-span are compared, judge that whether described remanent fatigue life is 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 the material temperature coefficient of expansion of each dangerous position, a₁, a₂..., a_nFor coefficient, T is mean temperature in section seclected time, T₀For the combined cofferdam structure location year-round average temperature under complex geological condition.

C, described life-span security evaluation judgment formula 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, the slope that k is fatigue curve is reciprocal, p_iFor the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFor structural design fatigue life, in actual applications, can be affected by the combined cofferdam structural overload under complex geological condition, be therefore dynamically change, and along with overload uses the change of natural law to be a nonlinear process,T_AFatigue life, d is designed for initiating structure_zRepresent that the combined cofferdam structure overall design under complex geological condition uses natural law, d_gRepresent that the combined cofferdam structural overload under complex geological condition uses 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, output 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 the health monitoring carrying out combined cofferdam structure under complex geological condition with wireless sensor network, cover wide, real-time；Propose fatigue life safety judgment formula, decrease the workload of calculating, improve the work efficiency of monitoring system；Propose the computing formula of average displacement, and average displacement is corrected, adopt average displacement and displacement threshold value to compare judgement, decrease the workload of calculating；Pair of strain sensors carries out temperature-compensating, improves the certainty of measurement of strain, and then improves the overall measurement accuracy of monitoring system；Utilize the health status of combined cofferdam structure under GIS emulation platform Simulation of Complex geological conditions, there is the good effect carrying out interface alternation with user；Time phase t=28h, it is achieved that the full-automatic monitoring that the combined cofferdam structure dynamics under complex geological condition is healthy, the overall measurement accuracy of monitoring system improves 17%.

Embodiment 3: the combined cofferdam health forecast system under complex geological condition as shown in Figure 1, comprising:

(1) monitoring modular, including the wireless sensor network that the combined cofferdam structural health under complex geological condition is monitored, for monitoring strain sensor assemblies and the displacement transducer of each dangerous position of combined cofferdam structure under complex geological condition, combined cofferdam structural health structure under complex geological condition is monitored by described wireless sensor network all standing, simultaneously, network adopts advanced physical message emerging system, the real-time perception to the combined cofferdam structural health structure under complex geological condition；Institute's displacement sensors is for the working base point of monitoring dangerous position change in displacement and carries out three dimensions displacement monitoring based on the overall datum mark of working base point stability for checking, and each dangerous position of the combined cofferdam structure under described complex geological condition, working base point and overall situation datum mark are determined by the combined cofferdam structure under complex geological condition is carried out FEM Simulation；Described strain sensor assemblies includes performance parameters and completely identical in structure work strain transducer and temperature-compensating strain transducer, on each dangerous position of described work strain transducer and the combined cofferdam structure that is arranged under complex geological condition after the series connection of temperature-compensating strain transducer；

(2) data processing module, it includes gathering central station, to gathering the signal conditioner that data of collecting of central station carry out conditioning processing and amplifying and the signal transmitting apparatus that the data that signal conditioner is processed is transmitted；

(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, and 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, the assessment result of security state evaluation module is carried out emulation display, the health status of the combined cofferdam structure under Simulation of Complex geological conditions by described three-dimension GIS emulation platform, and simulation process is:

A, finite element software is utilized to import GIS platform after carrying out the modeling of combined cofferdam structure under complex geological condition, build the model of combined cofferdam structure different component under complex geological condition respectively, GIS platform adjusts the locus of combined cofferdam structural elements under each complex geological condition；

B, by different shape the symbols each dangerous position of combined cofferdam structure under analog information complex geological condition, strain sensor assemblies and displacement transducer in GIS platform；

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

Described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, the average displacement that the displacement data transmitted by signal transmitting apparatus is calculated obtaining between two time phase t by described microprocessor is poor, therefore first displacement difference is compensated owing to the combined cofferdam structure under complex geological condition exists phenomenon of expanding with heat and contract with cold, then average displacement difference is compared with regulation displacement difference limen value, judge that whether described average displacement difference is in a safe condition, and the Monitoring Data according to strain sensor assemblies 24h is calculated, obtain stress amplitude spectrum, the remanent fatigue life of computation structure is composed according to stress amplitude, and described remanent fatigue life and structural design life-span are compared, judge that whether described remanent fatigue life is 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 the material temperature coefficient of expansion of each dangerous position, a₁, a₂..., a_nFor coefficient, T is mean temperature in section seclected time, T₀For the combined cofferdam structure location year-round average temperature under complex geological condition.

C, described life-span security evaluation judgment formula 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, the slope that k is fatigue curve is reciprocal, p_iFor the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFor structural design fatigue life, in actual applications, can be affected by the combined cofferdam structural overload under complex geological condition, be therefore dynamically change, and along with overload uses the change of natural law to be a nonlinear process,T_AFatigue life, d is designed for initiating structure_zRepresent that the combined cofferdam structure overall design under complex geological condition uses natural law, d_gRepresent that the combined cofferdam structural overload under complex geological condition uses 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, output 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 the health monitoring carrying out combined cofferdam structure under complex geological condition with wireless sensor network, cover wide, real-time；Propose fatigue life safety judgment formula, decrease the workload of calculating, improve the work efficiency of monitoring system；Propose the computing formula of average displacement, and average displacement is corrected, adopt average displacement and displacement threshold value to compare judgement, decrease the workload of calculating；Pair of strain sensors carries out temperature-compensating, improves the certainty of measurement of strain, and then improves the overall measurement accuracy of monitoring system；Utilize the health status of combined cofferdam structure under GIS emulation platform Simulation of Complex geological conditions, there is the good effect carrying out interface alternation with user；Time phase t=32h, it is achieved that the full-automatic monitoring that the combined cofferdam structure dynamics under complex geological condition is healthy, the overall measurement accuracy of monitoring system improves 18%.

Embodiment 4: the combined cofferdam health forecast system under complex geological condition as shown in Figure 1, comprising:

(1) monitoring modular, including the wireless sensor network that the combined cofferdam structural health under complex geological condition is monitored, for monitoring strain sensor assemblies and the displacement transducer of each dangerous position of combined cofferdam structure under complex geological condition, combined cofferdam structural health structure under complex geological condition is monitored by described wireless sensor network all standing, simultaneously, network adopts advanced physical message emerging system, the real-time perception to the combined cofferdam structural health structure under complex geological condition；Institute's displacement sensors is for the working base point of monitoring dangerous position change in displacement and carries out three dimensions displacement monitoring based on the overall datum mark of working base point stability for checking, and each dangerous position of the combined cofferdam structure under described complex geological condition, working base point and overall situation datum mark are determined by the combined cofferdam structure under complex geological condition is carried out FEM Simulation；Described strain sensor assemblies includes performance parameters and completely identical in structure work strain transducer and temperature-compensating strain transducer, on each dangerous position of described work strain transducer and the combined cofferdam structure that is arranged under complex geological condition after the series connection of temperature-compensating strain transducer；

(2) data processing module, it includes gathering central station, to gathering the signal conditioner that data of collecting of central station carry out conditioning processing and amplifying and the signal transmitting apparatus that the data that signal conditioner is processed is transmitted；

(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, and 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, the assessment result of security state evaluation module is carried out emulation display, the health status of the combined cofferdam structure under Simulation of Complex geological conditions by described three-dimension GIS emulation platform, and simulation process is:

A, finite element software is utilized to import GIS platform after carrying out the modeling of combined cofferdam structure under complex geological condition, build the model of combined cofferdam structure different component under complex geological condition respectively, GIS platform adjusts the locus of combined cofferdam structural elements under each complex geological condition；

B, by different shape the symbols each dangerous position of combined cofferdam structure under analog information complex geological condition, strain sensor assemblies and displacement transducer in GIS platform；

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

Described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, the average displacement that the displacement data transmitted by signal transmitting apparatus is calculated obtaining between two time phase t by described microprocessor is poor, therefore first displacement difference is compensated owing to the combined cofferdam structure under complex geological condition exists phenomenon of expanding with heat and contract with cold, then average displacement difference is compared with regulation displacement difference limen value, judge that whether described average displacement difference is in a safe condition, and the Monitoring Data according to strain sensor assemblies 24h is calculated, obtain stress amplitude spectrum, the remanent fatigue life of computation structure is composed according to stress amplitude, and described remanent fatigue life and structural design life-span are compared, judge that whether described remanent fatigue life is 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 the material temperature coefficient of expansion of each dangerous position, a₁, a₂..., a_nFor coefficient, T is mean temperature in section seclected time, T₀For the combined cofferdam structure location year-round average temperature under complex geological condition.

C, described life-span security evaluation judgment formula 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, the slope that k is fatigue curve is reciprocal, p_iFor the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFor structural design fatigue life, in actual applications, can be affected by the combined cofferdam structural overload under complex geological condition, be therefore dynamically change, and along with overload uses the change of natural law to be a nonlinear process,T_AFatigue life, d is designed for initiating structure_zRepresent that the combined cofferdam structure overall design under complex geological condition uses natural law, d_gRepresent that the combined cofferdam structural overload under complex geological condition uses 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, output 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 the health monitoring carrying out combined cofferdam structure under complex geological condition with wireless sensor network, cover wide, real-time；Propose fatigue life safety judgment formula, decrease the workload of calculating, improve the work efficiency of monitoring system；Propose the computing formula of average displacement, and average displacement is corrected, adopt average displacement and displacement threshold value to compare judgement, decrease the workload of calculating；Pair of strain sensors carries out temperature-compensating, improves the certainty of measurement of strain, and then improves the overall measurement accuracy of monitoring system；Utilize the health status of combined cofferdam structure under GIS emulation platform Simulation of Complex geological conditions, there is the good effect carrying out interface alternation with user；Time phase t=36h, it is achieved that the full-automatic monitoring that the combined cofferdam structure dynamics under complex geological condition is healthy, the overall measurement accuracy of monitoring system improves 20%.

Embodiment 5: the combined cofferdam health forecast system under complex geological condition as shown in Figure 1, comprising:

(1) monitoring modular, including the wireless sensor network that the combined cofferdam structural health under complex geological condition is monitored, for monitoring strain sensor assemblies and the displacement transducer of each dangerous position of combined cofferdam structure under complex geological condition, combined cofferdam structural health structure under complex geological condition is monitored by described wireless sensor network all standing, simultaneously, network adopts advanced physical message emerging system, the real-time perception to the combined cofferdam structural health structure under complex geological condition；Institute's displacement sensors is for the working base point of monitoring dangerous position change in displacement and carries out three dimensions displacement monitoring based on the overall datum mark of working base point stability for checking, and each dangerous position of the combined cofferdam structure under described complex geological condition, working base point and overall situation datum mark are determined by the combined cofferdam structure under complex geological condition is carried out FEM Simulation；Described strain sensor assemblies includes performance parameters and completely identical in structure work strain transducer and temperature-compensating strain transducer, on each dangerous position of described work strain transducer and the combined cofferdam structure that is arranged under complex geological condition after the series connection of temperature-compensating strain transducer；

(2) data processing module, it includes gathering central station, to gathering the signal conditioner that data of collecting of central station carry out conditioning processing and amplifying and the signal transmitting apparatus that the data that signal conditioner is processed is transmitted；

(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, and 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, the assessment result of security state evaluation module is carried out emulation display, the health status of the combined cofferdam structure under Simulation of Complex geological conditions by described three-dimension GIS emulation platform, and simulation process is:

A, finite element software is utilized to import GIS platform after carrying out the modeling of combined cofferdam structure under complex geological condition, build the model of combined cofferdam structure different component under complex geological condition respectively, GIS platform adjusts the locus of combined cofferdam structural elements under each complex geological condition；

B, by different shape the symbols each dangerous position of combined cofferdam structure under analog information complex geological condition, strain sensor assemblies and displacement transducer in GIS platform；

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

Described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, the average displacement that the displacement data transmitted by signal transmitting apparatus is calculated obtaining between two time phase t by described microprocessor is poor, therefore first displacement difference is compensated owing to the combined cofferdam structure under complex geological condition exists phenomenon of expanding with heat and contract with cold, then average displacement difference is compared with regulation displacement difference limen value, judge that whether described average displacement difference is in a safe condition, and the Monitoring Data according to strain sensor assemblies 24h is calculated, obtain stress amplitude spectrum, the remanent fatigue life of computation structure is composed according to stress amplitude, and described remanent fatigue life and structural design life-span are compared, judge that whether described remanent fatigue life is 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 the material temperature coefficient of expansion of each dangerous position, a₁, a₂..., a_nFor coefficient, T is mean temperature in section seclected time, T₀For the combined cofferdam structure location year-round average temperature under complex geological condition.

C, described life-span security evaluation judgment formula 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, the slope that k is fatigue curve is reciprocal, p_iFor the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFor structural design fatigue life, in actual applications, can be affected by the combined cofferdam structural overload under complex geological condition, be therefore dynamically change, and along with overload uses the change of natural law to be a nonlinear process,T_AFatigue life, d is designed for initiating structure_zRepresent that the combined cofferdam structure overall design under complex geological condition uses natural law, d_gRepresent that the combined cofferdam structural overload under complex geological condition uses 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, output 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 the health monitoring carrying out combined cofferdam structure under complex geological condition with wireless sensor network, cover wide, real-time；Propose fatigue life safety judgment formula, decrease the workload of calculating, improve the work efficiency of monitoring system；Propose the computing formula of average displacement, and average displacement is corrected, adopt average displacement and displacement threshold value to compare judgement, decrease the workload of calculating；Pair of strain sensors carries out temperature-compensating, improves the certainty of measurement of strain, and then improves the overall measurement accuracy of monitoring system；Utilize the health status of combined cofferdam structure under GIS emulation platform Simulation of Complex geological conditions, there is the good effect carrying out interface alternation with user；Time phase t=40h, it is achieved that the full-automatic monitoring that the combined cofferdam structure dynamics under complex geological condition is healthy, the overall measurement accuracy of monitoring system improves 21%.

Finally should be noted that; above example is only in order to illustrate technical scheme; but not limiting the scope of the invention; 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 replacement, without deviating from the spirit and scope of technical solution of the present invention.

Claims (1)

1. the combined cofferdam health forecast system under complex geological condition, for the health of the combined cofferdam structure under complex geological condition is carried out dynamic monitoring and early warning, is characterized in that, including:

(1) monitoring modular, including the wireless sensor network that the combined cofferdam structural health under complex geological condition is monitored, for monitoring strain sensor assemblies and the displacement transducer of each dangerous position of combined cofferdam structure under complex geological condition, combined cofferdam structural health structure under complex geological condition is monitored by described wireless sensor network all standing, simultaneously, network adopts advanced physical message emerging system, the real-time perception to the combined cofferdam structural health structure under complex geological condition；Institute's displacement sensors is for the working base point of monitoring dangerous position change in displacement and carries out three dimensions displacement monitoring based on the overall datum mark of working base point stability for checking, and each dangerous position of the combined cofferdam structure under described complex geological condition, working base point and overall situation datum mark are determined by the combined cofferdam structure under complex geological condition is carried out FEM Simulation；Described strain sensor assemblies includes performance parameters and completely identical in structure work strain transducer and temperature-compensating strain transducer, on each dangerous position of described work strain transducer and the combined cofferdam structure that is arranged under complex geological condition after the series connection of temperature-compensating strain transducer；

(2) data processing module, it includes gathering central station, to gathering the signal conditioner that data of collecting of central station carry out conditioning processing and amplifying and the signal transmitting apparatus that the data that signal conditioner is processed is transmitted；

(3) security state evaluation module, described security state evaluation module includes the microprocessor connecting signal transmitting apparatus, the average displacement that the displacement data transmitted by signal transmitting apparatus is calculated obtaining between two time phase t by described microprocessor is poor, therefore first displacement difference is compensated owing to the combined cofferdam structure under complex geological condition exists phenomenon of expanding with heat and contract with cold, then average displacement difference is compared with regulation displacement difference limen value, judge that whether described average displacement difference is in a safe condition, and the Monitoring Data according to strain sensor assemblies 24h is calculated, obtain stress amplitude spectrum, the remanent fatigue life of computation structure is composed according to stress amplitude, and described remanent fatigue life and structural design life-span are compared, judge that whether described remanent fatigue life is 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 the material temperature coefficient of expansion of each dangerous position, a₁, a₂..., a_nFor coefficient, T is mean temperature in section seclected time, T₀For the combined cofferdam structure location year-round average temperature under complex geological condition.

C, described life-span security evaluation judgment formula 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, the slope that k is fatigue curve is reciprocal, p_iFor the Cyclic Stress coefficient of the actual experience of structure under hot spot stress range, T_BFor structural design fatigue life, in actual applications, can be affected by the combined cofferdam structural overload under complex geological condition, be therefore dynamically change, and along with overload uses the change of natural law to be a nonlinear process,T_AFatigue life, d is designed for initiating structure_zRepresent that the combined cofferdam structure overall design under complex geological condition uses natural law, d_gRepresent that the combined cofferdam structural overload under complex geological condition uses 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, output alarm signal；

(4) early warning and alarming module, it includes for preventing the analysis processor of false alarm, alarm and information database of record, and 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, the assessment result of security state evaluation module is carried out emulation display, the health status of the combined cofferdam structure under Simulation of Complex geological conditions by described three-dimension GIS emulation platform, and simulation process is:

A, finite element software is utilized to import GIS platform after carrying out the modeling of combined cofferdam structure under complex geological condition, build the model of combined cofferdam structure different component under complex geological condition respectively, GIS platform adjusts the locus of combined cofferdam structural elements under each complex geological condition；

B, by different shape the symbols each dangerous position of combined cofferdam structure under analog information complex geological condition, strain sensor assemblies and displacement transducer in GIS platform；

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