CN105716658A - Prototype stress strain testing method and system for gate - Google Patents

Abstract

The invention discloses a prototype stress strain testing method for a gate. Firstly, a structure feature part of a hydraulic metal structure steel gate is obtained; according to the structure feature part, a stress strain testing point of the hydraulic metal structure steel gate is determined; a three-wire resistance strain gauge is distributed on the strain testing point through the four-wire connection method; finally, testing data between stress and strain of the resistance strain gauge. The underwater three-wire resistance strain gauge without being subjected to waterproof treatment is adopted in the prototype stress strain testing method, and the four-wire connection method is also adopted, so that strain testing errors caused by wire resistance, touch resistance and the like are effectively reduced and eliminated. Besides, by conducting finite element (CFD) stress analysis on an arc-shaped gate body of the hydraulic metal structure steel gate in advance, the deformation mode of the hydraulic metal structure steel gate is predicted, dangerous sections and dangerous positions are found, and the testing point is selected finally. By means of symmetry of the structure and a load, the number of testing points is reduced, and workloads are reduced. The aim that the stress state of the structure can be reflected truly enough with the minimum number of testing points is achieved.

Description

A kind of gate prototype stress-strain test method and system

Technical field

The present invention relates to gate of hydropower station field tests, particularly relate to a kind of Hydraulic Metal steel-slag sand prototype stress-strain test method and system.

Background technology

The gate in power station is to ensure that an important component part of power station normal operation, gate prototype must be carried out Validity Test, testing engineering is by the impact of reservoir operation and reservoir level change, it is generally required to gate prototype is carried out stress-strain test, gate stress-strain test can be divided into Entity measurement and model measurement by the difference measuring object, can be divided into static measurement and kinetic measurement by measurement device.

According to correlation engineering experience, owing to the water-proofing treatment of foil gauge can produce extra additional strain, and the strain testing error brought due to conductor resistance, contact resistance etc., there is no assurance that the effectiveness of test and certainty of measurement.

Therefore, there is the method for testing being badly in need of a kind of strain testing error that can effectively reduce and eliminate and bring due to conductor resistance, contact resistance etc..

Summary of the invention

(1) to solve the technical problem that being to provide one accurately can carry out method of testing to Hydraulic Metal steel-slag sand prototype ess-strain；The method can effectively reduce and eliminate the strain testing error owing to conductor resistance, contact resistance etc. bring.

An object of the present invention is to propose a kind of gate prototype stress-strain test method；The two of the purpose of the present invention propose a kind of gate prototype stress-strain test system.

(2) technical scheme

An object of the present invention is achieved through the following technical solutions:

A kind of gate prototype stress-strain test method provided by the invention, comprises the following steps:

S1: obtain Hydraulic Metal steel-slag sand architectural feature position；

S2: determine Hydraulic Metal steel-slag sand ess-strain measuring point according to architectural feature position；

S3: adopt four line connections to lay three line resistance foil gauges at strain measuring point；

S4: gather the test data between three line resistance foil gauge stress and strains.

Further, described step S1 obtains Hydraulic Metal steel-slag sand architectural feature position, is obtain critical section and the danger position of Hydraulic Metal steel-slag sand structure by gates of segmental shape carries out finite element CFD stress analysis in advance；Described Hydraulic Metal steel-slag sand architectural feature position specifically includes girder, lower girder, upper branch arm, lower branch arm, panel and hanger.

Further, according to architectural feature position, described step S2 determines that Hydraulic Metal steel-slag sand ess-strain measuring point is the position according to steel-slag sand architectural feature position and version chooses ess-strain measuring point；Described Hydraulic Metal steel-slag sand ess-strain measuring point includes girder ess-strain point layout, upper branch arm ess-strain point layout, lower branch arm ess-strain point layout, panel stress strain point layout and hanger ess-strain point layout.

Further, the laying of three line resistance foil gauges in described step S3 carries out in the following manner: described foil gauge one end is connected by r1 and R4 one end；The other end of described R4 is connected with the other end of foil gauge by r3；The other end of described foil gauge is connected with R2 and R3 of series connection also by r2；Described r1 and R4 connects common point and is connected common point as outfan with R2 and R3；

The output signal of telecommunication of described outfan is transported to data acquisition module；

The signal of telecommunication collected is transmitted data by ZigBee by described data acquisition module；

Wherein,

R1 represents foil gauge conductor resistance；

R2 represents foil gauge conductor resistance；

R3 represents foil gauge conductor resistance；

R1 represents Wheatstone bridge arm resistance；

R2 represents Wheatstone bridge arm resistance；

R3 represents Wheatstone bridge arm resistance；

Rg represents foil gauge resistance.

Further, it is gathered the signal of telecommunication of foil gauge by data acquisition module that described step S4 acquisition module gathers test data between the stress and strain of three line resistance foil gauges, and the ZigBee module of the low-power consumption LAN protocol being then based on IEEE802.15.4 standard is transmitted；Described test packet draws together Structural Static stress test data and described kinestate structural stress test data；

Described Structural Static stress test data, are test strobe ess-strain incremental datas of component in water blocking process；Measure gate primary structure member never by the variable quantity of water ballast(ing) to specified water ballast(ing)；

Described kinestate structural stress test data, are test strobe ess-strain delta datas of component in opening and closing process；Measure the ess-strain graph of kinestate primary structure member.

The two of the purpose of the present invention are achieved through the following technical solutions:

A kind of gate prototype stress-strain test system provided by the invention, including three line resistance foil gauges, data acquisition module, ZigBee module and processor；

Described three line resistance foil gauges are arranged on Hydraulic Metal steel-slag sand architectural feature position；

Described data acquisition module and three line resistance foil gauges connect the signal of telecommunication for gathering foil gauge output；

Described ZigBee module is connected with data acquisition module, for receiving the signal of telecommunication that acquisition module collects and being transferred in processor by the signal of telecommunication；

Described processor transmits next data for receiving ZigBee module and carries out storing and analyzing.

Further, described three line resistance foil gauges are arranged in the following manner:

Described foil gauge one end is connected by r1 and R4 one end；The other end of described R4 is connected with the other end of foil gauge by r3；The other end of described foil gauge is connected with R2 and R3 of series connection also by r2；Described r1 and R4 connects common point and is connected common point as outfan with R2 and R3；

The output signal of telecommunication of described outfan is transported to data acquisition module；

The signal of telecommunication collected is transmitted data by ZigBee by described data acquisition module；

Wherein,

R1 represents foil gauge conductor resistance；

R2 represents foil gauge conductor resistance；

R3 represents foil gauge conductor resistance；

R1 represents Wheatstone bridge arm resistance；

R2 represents Wheatstone bridge arm resistance；

R3 represents Wheatstone bridge arm resistance；

Rg represents foil gauge resistance.

Further, the symmetry that the measuring point that described three line resistance foil gauges are arranged is each structure according to Hydraulic Metal steel-slag sand architectural feature position and load is laid.

Further, described Hydraulic Metal steel-slag sand architectural feature position is to obtain critical section and the danger position of Hydraulic Metal steel-slag sand structure by gates of segmental shape carries out finite element CFD stress analysis in advance；Described Hydraulic Metal steel-slag sand architectural feature position specifically includes girder, lower girder, upper branch arm, lower branch arm, panel and hanger.

Further, described determine that Hydraulic Metal steel-slag sand ess-strain measuring point is the position according to steel-slag sand architectural feature position and version chooses ess-strain measuring point according to architectural feature position；Described Hydraulic Metal steel-slag sand ess-strain measuring point includes girder ess-strain point layout, upper branch arm ess-strain point layout, lower branch arm ess-strain point layout, panel stress strain point layout and hanger ess-strain point layout.

(3) beneficial effect

Compared with prior art and product, the present invention has the following advantages:

The present invention could be used without the three line resistance foil gauge under water through water-proofing treatment, and adopts four line connections, effectively reduces and eliminates the strain testing error owing to conductor resistance, contact resistance etc. bring.

The present invention, by gates of segmental shape carries out finite element (CFD) stress analysis in advance, finds out critical section and the danger position of structure, and according to CFD stress analysis achievement and test request, incorporation engineering practical experience is selected measuring point finally.Utilize the symmetry of structure and load, to reduce measure-point amount, alleviate workload.Reach just can reflect enough truly structural stress state with minimum measuring point.

Accompanying drawing explanation

Fig. 1 is the gate prototype stress-strain test method flow diagram of the present invention.

Fig. 2 is the flood discharging tunnel arch gate upper branch arm of the present invention and upper girder pressure detection point layout drawing.

Fig. 3 is the flood discharging tunnel arch gate lower branch arm of the present invention and lower girder pressure detection point layout drawing.

Fig. 4 is the flood discharging tunnel arch gate gate flap pressure detection point layout drawing of the present invention.

Fig. 5 is the flood discharging tunnel arch gate upper branch arm of the present invention and upper girder dynamic stress point layout figure.

Fig. 6 is the flood discharging tunnel arch gate lower branch arm of the present invention and lower girder dynamic stress point layout figure.

Fig. 7 is the flood discharging tunnel arch gate gate flap dynamic stress point layout figure of the present invention.

Fig. 8 is the three line resistance foil gauge four line connection wiring of the present invention.

Fig. 9 is a kind of gate prototype stress-strain test Method And Principle schematic diagram mode of the present invention.

In figure, 1 represents three line resistance foil gauges；2 represent data acquisition module；3 represent ZigBee module；4 represent work computer.

Detailed description of the invention

Understanding for the ease of those of ordinary skill in the art and implement the present invention, below in conjunction with the drawings and the specific embodiments, the present invention is described in further detail.

Embodiment 1

As shown in Figure 1, the present embodiment provides a kind of gate prototype stress-strain test method, comprises the following steps:

S1: obtain Hydraulic Metal steel-slag sand architectural feature position；

S2: determine Hydraulic Metal steel-slag sand ess-strain measuring point according to architectural feature position；

S3: adopt four line connections to lay three line resistance foil gauges 1 at strain measuring point；

S4: gather four steps of test data between three line resistance foil gauge stress and strains:

Described step S1 obtains Hydraulic Metal steel-slag sand architectural feature position, for by gates of segmental shape carrying out finite element (CFD) stress analysis in advance in conjunction with relevant criterion and engineering experience, finding out critical section and the danger position of structure；Hydraulic Metal steel-slag sand architectural feature position specifically includes girder, lower girder, upper branch arm, lower branch arm, panel and hanger.

Described step S2 determines Hydraulic Metal steel-slag sand ess-strain measuring point according to architectural feature position, for the position according to steel-slag sand architectural feature position and version, and chooses ess-strain measuring point in conjunction with relevant criterion and engineering experience；Hydraulic Metal steel-slag sand ess-strain measuring point includes: girder ess-strain point layout, upper branch arm ess-strain point layout, lower branch arm ess-strain point layout, panel stress strain point layout and hanger ess-strain point layout.

The described step S3 tri-line resistance foil gauge four line connection mode of connection is used for connecting foil gauge and data acquisition module, including

Three line resistance foil gauges 1, model is WFRA-6-11, by measuring the change of resistance, strain is measured, and exports the signal of telecommunication；

Data acquisition module 2, gathers the signal of telecommunication of foil gauge output, transfers data to work computer by ZigBee and carry out storing and analyzing.The described three line resistance foil gauge four line connection modes of connection.

The mode of connection is as shown in Figure 8；Fig. 8 is the three line resistance foil gauge four line connection modes of connection；

Described step S4 acquisition module gathers test data between the stress and strain of three line resistance foil gauges, for being gathered the signal of telecommunication of foil gauge by acquisition module, the ZigBee module 3 of the low-power consumption LAN protocol being then based on IEEE802.15.4 standard is transferred to computer, is stored by the software signal of telecommunication to gathering of analyzing in computer and is analyzed.Described acquisition module gathers test packet between the stress and strain of three line resistance foil gauges and draws together:

Structural Static stress test data, are test strobe ess-strain incremental datas of component in water blocking process；Measure gate primary structure member never by the variable quantity of water ballast(ing) to specified water ballast(ing)；

Described kinestate structural stress test data, are test strobe ess-strain delta datas of component in opening and closing process；Measure the ess-strain graph of kinestate primary structure member.

A kind of described gate prototype stress-strain test method includes consisting of part (principal diagram is intended to see Fig. 2):

1) three line resistance foil gauge 1, model is WFRA-6-11, by measuring the change of resistance, strain is measured, and exports the signal of telecommunication；

2) data acquisition module 2, gather the signal of telecommunication of foil gauge output；

3) ZigBee module 3, based on the low-power consumption LAN protocol of IEEE802.15.4 standard, for receiving the signal of telecommunication that acquisition module collects and being sent to work computer by USB；

4) work computer 4, receive ZigBee and transmit the data come and carry out storing and analyzing.

Fig. 9 is a kind of gate prototype stress-strain test Method And Principle schematic diagram.

Embodiment 2

Stress test in the present embodiment adopts three line resistance foil gauges (model: the WFRA-6-11) under water of Japan's import.Three line resistance foil gauges adopt four line connections, and the method can effectively reduce and eliminate the strain testing error owing to conductor resistance, contact resistance etc. bring.

Hydraulic Metal steel-slag sand static stress test mainly test strobe ess-strain increment situation of component in water blocking process, measures gate main bearing member never by the variable quantity of water ballast(ing) to specified water ballast(ing).

Hydraulic Metal steel-slag sand dynamic stress rest is mainly test strobe ess-strain situation of change of component in opening and closing process, measures the ess-strain graph of kinestate main bearing member.

Hydraulic Metal steel-slag sand stress-strain test the principle of structural stress state should select measuring point according to reaching with minimum measuring point enough to reflect truly.By gates of segmental shape carries out finite element (CFD) stress analysis in advance, finding out critical section and the danger position of structure, according to CFD stress analysis achievement and test request, incorporation engineering practical experience is selected measuring point finally.

The strain that all kinds of foil gauges are measured is as follows with Stress calculation relation:

A) single grid foil gauge stress-strain relation is shown in equation below:

σ_x=E × ε_x…………………………………(1)

In formula: σ_xDirect stress, units MPa

E elastic modelling quantity, unit GPa

ε_xStrain

B) double grid foil gauge stress-strain relation is shown in equation below:

${\mathrm{\σ}}_x=\frac{E}{1-v^2}({\mathrm{\ϵ}}_x+v\×{\mathrm{\ϵ}}_y)$

${\mathrm{\σ}}_y=\frac{E}{1-v^2}({\mathrm{\ϵ}}_y+v\×{\mathrm{\ϵ}}_x)\mathrm{...}\left(2\right)$

In formula: σ_x、σ_yDirect stress, units MPa

E elastic modelling quantity, unit GPa

ε_x、ε_yStrain

V Poisson's ratio

C) three grid foil gauge ess-strains and angled relationships are shown in equation below:

${\mathrm{\ϵ}}_{max}=\frac{1}{2}\[{\mathrm{\ϵ}}_x+{\mathrm{\ϵ}}_y+\sqrt{2\{{({\mathrm{\ϵ}}_x-{\mathrm{\ϵ}}_z)}^2+{({\mathrm{\ϵ}}_z-{\mathrm{\ϵ}}_y)}^2\}}\]$

${\mathrm{\ϵ}}_{\min }=\frac{1}{2}\[{\mathrm{\ϵ}}_x+{\mathrm{\ϵ}}_y-\sqrt{2\{{({\mathrm{\ϵ}}_x-{\mathrm{\ϵ}}_z)}^2+{({\mathrm{\ϵ}}_z-{\mathrm{\ϵ}}_y)}^2\}}\]$

${\mathrm{\σ}}_{max}=\frac{E}{1-v^2}({\mathrm{\ϵ}}_{max}+{\mathrm{v\ϵ}}_{min})=\frac{E}{2}\[\frac{{\mathrm{\ϵ}}_x+{\mathrm{\ϵ}}_y}{1-v}+\frac{1}{1+v}\×\sqrt{2\{{({\mathrm{\ϵ}}_x-{\mathrm{\ϵ}}_z)}^2+{({\mathrm{\ϵ}}_z-{\mathrm{\ϵ}}_y)}^2\}}\]$

${\mathrm{\σ}}_{\min }=\frac{E}{1-v^2}({\mathrm{\ϵ}}_{\min }+{\mathrm{v\ϵ}}_{min})=\frac{E}{2}\[\frac{{\mathrm{\ϵ}}_x+{\mathrm{\ϵ}}_y}{1-v}+\frac{1}{1+v}\×\sqrt{2\{{({\mathrm{\ϵ}}_x-{\mathrm{\ϵ}}_z)}^2+{({\mathrm{\ϵ}}_z-{\mathrm{\ϵ}}_y)}^2\}}\]$

${\mathrm{\τ}}_{max}=\frac{{\mathrm{\σ}}_{max}-{\mathrm{\σ}}_{min}}{2}$

${\mathrm{\τ}}_{xy}=\frac{{\mathrm{\σ}}_{max}-{\mathrm{\σ}}_{min}}{2}\×sin2\mathrm{\θ}$

${\mathrm{\σ}}_{mises}=\sqrt{\frac{{({\mathrm{\σ}}_x-{\mathrm{\σ}}_x)}^2+{\mathrm{\σ}}_y^2+{\mathrm{\σ}}_x^2+6{\mathrm{\τ}}_{xy}}{2}}\mathrm{...}\left(3\right)$

If ε_x> ε_y, then $\mathrm{\&theta;}=\frac{1}{2}{\tan }^{-1}\left\{\frac{2{\mathrm{\&epsiv;}}_z-({\mathrm{\&epsiv;}}_x+{\mathrm{\&epsiv;}}_y)}{{\mathrm{\&epsiv;}}_x-{\mathrm{\&epsiv;}}_y}\right\};$ If ε_x< ε_y, then $\mathrm{\&theta;}=\frac{1}{2}{\tan }^{-1}\left\{\frac{2{\mathrm{\&epsiv;}}_z-({\mathrm{\&epsiv;}}_x+{\mathrm{\&epsiv;}}_y)}{{\mathrm{\&epsiv;}}_x-{\mathrm{\&epsiv;}}_y}\right\}+\frac{\mathrm{\&pi;}}{2}.$

In formula: σ_max, σ_minDirect stress, units MPa

E elastic modelling quantity, unit GPa

ε_x、ε_yStrain

V Poisson's ratio

τ_max, τ_xyShear stress, units MPa

θ principal stress and x-axis angular separation

The former sight stress test method of flood discharging tunnel arch gate that the present embodiment provides, has the advantages such as simple to operate, capacity of resisting disturbance is strong, measurement data is accurate, Measurement results intuitive display.

The point layout figure of the gate prototype stress-strain test that the present embodiment provides is as illustrated in figs. 2-7；Wherein, Fig. 2 is flood discharging tunnel arch gate upper branch arm and upper girder pressure detection point layout drawing；Fig. 3 is flood discharging tunnel arch gate lower branch arm and lower girder pressure detection point layout drawing；Fig. 4 is flood discharging tunnel arch gate gate flap pressure detection point layout drawing；Fig. 5 is flood discharging tunnel arch gate upper branch arm and upper girder pressure detection point layout drawing；Fig. 6 is flood discharging tunnel arch gate lower branch arm and lower girder pressure detection point layout drawing；Fig. 7 is flood discharging tunnel arch gate gate flap pressure detection point layout drawing；In flood discharging tunnel arch gate pressure detection point layout drawing, each measuring point position describes as follows:

Measuring point 1 (1-1): on upper left support arm the 11st beam lattice (near hinge) middle part left wing plate, water (flow) direction；

Measuring point 2 (1-2): in the middle part of upper left support arm the 11st beam lattice on epiplastron, left side, water (flow) direction；

Measuring point 3 (1-3): in the middle part of upper left support arm the 11st beam lattice on epiplastron, right side, water (flow) direction；

Measuring point 4 (1-4): in the middle part of upper left support arm the 11st beam lattice on right wing plate, water (flow) direction；

Measuring point 5 (1-5): in the middle part of upper left support arm the 7th beam lattice on left wing plate, water (flow) direction；

Measuring point 6 (1-6): in the middle part of upper left support arm the 7th beam lattice on epiplastron, left side, water (flow) direction；

Measuring point 7 (1-7): in the middle part of upper left support arm the 7th beam lattice on epiplastron, right side, water (flow) direction；

Measuring point 8 (1-8): in the middle part of upper left support arm the 7th beam lattice on right wing plate, water (flow) direction；

Measuring point 9 (2-1): in the middle part of upper left support arm the second beam lattice on left wing plate, water (flow) direction；

Measuring point 10 (2-2): in the middle part of upper left support arm the second beam lattice on epiplastron, left side, water (flow) direction；

Measuring point 11 (2-3): in the middle part of upper left support arm the second beam lattice on epiplastron, right side, water (flow) direction；

Measuring point 12 (2-4): in the middle part of upper left support arm the second beam lattice on right wing plate, water (flow) direction；

Measuring point 13 (2-5): on the left of gate flap on the second longeron wing plate, above upper girder near the first beam lattice, vertically；

Measuring point 14 (2-6): on the left of the upper left support arm of girder rear fender, 45 degree；

Measuring point 15 (2-7): on the left of the upper left support arm of girder rear fender, vertically；

Measuring point 16 (2-8): on the left of the upper left support arm of girder rear fender, laterally；

Measuring point 17 (3-1): on the right side of upper girder rear fender gate flap centrage, vertically；

Measuring point 18 (3-2): on the right side of upper girder rear fender gate flap centrage, laterally；

Measuring point 19 (3-3): on the left of upper girder rear fender gate flap centrage, vertically；

Measuring point 20 (3-4): on the left of upper girder rear fender gate flap centrage, laterally；

Measuring point 21 (3-5): in the middle part of upper girder right-to-left the 5th beam lattice web, laterally；

Measuring point 22 (3-6): in the middle part of upper girder right-to-left the 5th beam lattice web, vertically；

Measuring point 23 (3-7): upper girder top the first needle beam rear fender, in the beam lattice of left side the 4th, vertically；

Measuring point 24 (3-8): upper girder top the first needle beam rear fender, in the beam lattice of left side the 4th, laterally；

Measuring point 25 (4-1): in the middle part of upper right support arm the second beam lattice on left wing plate, water (flow) direction；

Measuring point 26 (4-2): in the middle part of upper right support arm the second beam lattice on epiplastron, left side, water (flow) direction；

Measuring point 27 (4-3): in the middle part of upper right support arm the second beam lattice on epiplastron, right side, water (flow) direction；

Measuring point 28 (4-4): in the middle part of upper right support arm the second beam lattice on right wing plate, water (flow) direction；

Measuring point 29 (4-5): on the right side of gate flap on the second longeron wing plate, above upper girder near the first beam lattice, vertically；

Measuring point 30 (4-6): on the right side of gate flap on the second longeron wing plate, above upper girder near the first beam lattice, vertically；

Measuring point 31 (4-7): upper branch arm is strengthened on the right side of connecting rod, vertically；

Measuring point 32 (4-8): upper branch arm is strengthened on the right side of connecting rod, laterally；

Measuring point 33 (5-1): in the middle part of lower girder right-to-left the 4th beam lattice web, laterally；

Measuring point 34 (5-2): in the middle part of lower girder right-to-left the 4th beam lattice web, 45 degree；

Measuring point 35 (5-3): in the middle part of lower girder right-to-left the 4th beam lattice web, vertically；

Measuring point 36 (5-4): on the left of gate flap on the second longeron wing plate, above lower girder near the second beam lattice, vertically；

Measuring point 37 (5-5): in the middle part of lower-left support arm the second beam lattice on left wing plate, water (flow) direction；

Measuring point 38 (5-6): in the middle part of lower-left support arm the second beam lattice on epiplastron, left side, water (flow) direction；

Measuring point 39 (5-7): in the middle part of lower-left support arm the second beam lattice on epiplastron, right side, water (flow) direction；

Measuring point 40 (5-8): in the middle part of lower-left support arm the second beam lattice on right wing plate, water (flow) direction；

Measuring point 41 (6-1): on the left of gate on the left of hanger, vertically；

Measuring point 42 (6-2): on the left of gate on the left of hanger, vertically；

Measuring point 43 (6-3): on the left of gate on the left of hanger, vertically；

Measuring point 44 (6-4): on the left of gate on the right side of hanger, vertically；

Measuring point 45 (6-5): on the left of gate on the right side of hanger, vertically；

Measuring point 46 (6-6): on the left of gate on the right side of hanger, vertically；

Measuring point 47 (6-7): needle beam wing plate near the water stop rubber of gate top, on gate flap centrage, laterally；

Measuring point 48 (6-8): gate top needle beam upper flange, on gate flap centrage, laterally；

Measuring point 49 (7-1): lower girder top the 3rd beam lattice wainscot, in the beam lattice of left side the 4th, vertically；

Measuring point 50 (7-2): lower girder top the 3rd beam lattice wainscot, in the beam lattice of left side the 4th, 45 degree；

Measuring point 51 (7-3): lower girder top the 3rd beam lattice wainscot, in the beam lattice of left side the 4th, laterally；

Measuring point 52 (7-4): lower girder top the second beam lattice wainscot, in the beam lattice of left side the 4th, vertically；

Measuring point 53 (7-5): lower girder top the second beam lattice wainscot, in the beam lattice of left side the 4th, 45 degree；

Measuring point 54 (7-6): lower girder top the second beam lattice wainscot, in the beam lattice of left side the 4th, laterally；

Measuring point 55 (7-7): on lower girder rear fender gate flap centrage, laterally；

Measuring point 56 (7-8): on the left of gate flap on the 3rd longeron wing plate, above lower girder near the 5th beam lattice, vertically；

Measuring point 57 (8-1): in the middle part of bottom right support arm the second beam lattice on left wing plate, water (flow) direction；

Measuring point 58 (8-2): in the middle part of bottom right support arm the second beam lattice on epiplastron, left side, water (flow) direction；

Measuring point 59 (8-3): in the middle part of bottom right support arm the second beam lattice on epiplastron, right side, water (flow) direction；

Measuring point 60 (8-4): in the middle part of bottom right support arm the second beam lattice on right wing plate, water (flow) direction；

Measuring point 61 (8-5): lower girder top the 3rd beam lattice wainscot, in the second beam lattice of right side, vertically；

Measuring point 62 (8-6): lower girder top the 3rd beam lattice wainscot, in the second beam lattice of right side, 45 degree；

Measuring point 63 (8-7): lower girder top the 3rd beam lattice wainscot, in the second beam lattice of right side, laterally；

Measuring point 64 (8-8): on the right side of gate flap on the first longeron wing plate, above lower girder near the second beam lattice, vertically.

Above-mentioned measuring point is the symmetry utilizing each structure with load, thus reducing measure-point amount, alleviates workload.Reach just can reflect enough truly structural stress state with minimum measuring point.

Above example is only one embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.Its concrete structure and size can be adjusted correspondingly according to actual needs.It should be pointed out that, for the person of ordinary skill of the art, without departing from the inventive concept of the premise, it is also possible to making some deformation and improvement, these broadly fall into protection scope of the present invention.

Claims (10)

1. a gate prototype stress-strain test method, it is characterised in that comprise the following steps:

S1: obtain Hydraulic Metal steel-slag sand architectural feature position；

S2: determine Hydraulic Metal steel-slag sand ess-strain measuring point according to architectural feature position；

S3: adopt four line connections to lay three line resistance foil gauges at strain measuring point；

S4: gather the test data between three line resistance foil gauge stress and strains.

2. gate prototype stress-strain test method according to claim 1, it is characterized in that, described step S1 obtains Hydraulic Metal steel-slag sand architectural feature position, is obtain critical section and the danger position of Hydraulic Metal steel-slag sand structure by gates of segmental shape carries out finite element CFD stress analysis in advance；Described Hydraulic Metal steel-slag sand architectural feature position specifically includes girder, lower girder, upper branch arm, lower branch arm, panel and hanger.

3. gate prototype stress-strain test method according to claim 1, it is characterized in that, according to architectural feature position, described step S2 determines that Hydraulic Metal steel-slag sand ess-strain measuring point is the position according to steel-slag sand architectural feature position and version chooses ess-strain measuring point；Described Hydraulic Metal steel-slag sand ess-strain measuring point includes girder ess-strain point layout, upper branch arm ess-strain point layout, lower branch arm ess-strain point layout, panel stress strain point layout and hanger ess-strain point layout.

4. gate prototype stress-strain test method according to claim 1, it is characterised in that the laying of three line resistance foil gauges in described step S3 carries out in the following manner: described foil gauge one end is connected by r1 and R4 one end；The other end of described R4 is connected with the other end of foil gauge by r3；The other end of described foil gauge is connected with R2 and R3 of series connection also by r2；Described r1 and R4 connects common point and is connected common point as outfan with R2 and R3；

The output signal of telecommunication of described outfan is transported to data acquisition module；

The signal of telecommunication collected is transmitted data by ZigBee by described data acquisition module；

Wherein,

R1 represents foil gauge conductor resistance；

R2 represents foil gauge conductor resistance；

R3 represents foil gauge conductor resistance；

R1 represents Wheatstone bridge arm resistance；

R2 represents Wheatstone bridge arm resistance；

R3 represents Wheatstone bridge arm resistance；

Rg represents foil gauge resistance.

5. gate prototype stress-strain test method according to claim 1, it is characterized in that, it is gathered the signal of telecommunication of foil gauge by data acquisition module that described step S4 acquisition module gathers test data between the stress and strain of three line resistance foil gauges, and the ZigBee module of the low-power consumption LAN protocol being then based on IEEE802.15.4 standard is transmitted；Described test packet draws together Structural Static stress test data and described kinestate structural stress test data；

Described Structural Static stress test data, are test strobe ess-strain incremental datas of component in water blocking process；Measure gate primary structure member never by the variable quantity of water ballast(ing) to specified water ballast(ing)；

Described kinestate structural stress test data, are test strobe ess-strain delta datas of component in opening and closing process；Measure the ess-strain graph of kinestate primary structure member.

6. a gate prototype stress-strain test system, it is characterised in that include three line resistance foil gauges, data acquisition module, ZigBee module and processor；

Described three line resistance foil gauges are arranged on Hydraulic Metal steel-slag sand architectural feature position；

Described data acquisition module and three line resistance foil gauges connect the signal of telecommunication for gathering foil gauge output；

Described ZigBee module is connected with data acquisition module, for receiving the signal of telecommunication that acquisition module collects and being transferred in processor by the signal of telecommunication；

Described processor transmits next data for receiving ZigBee module and carries out storing and analyzing.

7. gate prototype stress-strain test system according to claim 6, it is characterised in that described three line resistance foil gauges are arranged in the following manner:

Described foil gauge one end is connected by r1 and R4 one end；The other end of described R4 is connected with the other end of foil gauge by r3；The other end of described foil gauge is connected with R2 and R3 of series connection also by r2；Described r1 and R4 connects common point and is connected common point as outfan with R2 and R3；

The output signal of telecommunication of described outfan is transported to data acquisition module；

The signal of telecommunication collected is transmitted data by ZigBee by described data acquisition module；

Wherein,

R1 represents foil gauge conductor resistance；

R2 represents foil gauge conductor resistance；

R3 represents foil gauge conductor resistance；

R1 represents Wheatstone bridge arm resistance；

R2 represents Wheatstone bridge arm resistance；

R3 represents Wheatstone bridge arm resistance；

Rg represents foil gauge resistance.

8. gate prototype stress-strain test system according to claim 6, it is characterised in that the symmetry that the measuring point that described three line resistance foil gauges are arranged is each structure according to Hydraulic Metal steel-slag sand architectural feature position and load is laid.

9. gate prototype stress-strain test system according to claim 6, it is characterized in that, described Hydraulic Metal steel-slag sand architectural feature position is to obtain critical section and the danger position of Hydraulic Metal steel-slag sand structure by gates of segmental shape carries out finite element CFD stress analysis in advance；Described Hydraulic Metal steel-slag sand architectural feature position specifically includes girder, lower girder, upper branch arm, lower branch arm, panel and hanger.

10. gate prototype stress-strain test system according to claim 9, it is characterized in that, described determine that Hydraulic Metal steel-slag sand ess-strain measuring point is the position according to steel-slag sand architectural feature position and version chooses ess-strain measuring point according to architectural feature position；Described Hydraulic Metal steel-slag sand ess-strain measuring point includes girder ess-strain point layout, upper branch arm ess-strain point layout, lower branch arm ess-strain point layout, panel stress strain point layout and hanger ess-strain point layout.