CN204924542U - A wave force testing arrangement for wave wall - Google Patents

Abstract

The utility model provides a set up three group strain rosettes on the surperficial diameter that a wave force testing arrangement for wave wall, with wave wall wall body plane of constraint vertically direction on set gradually butt joint disc, elastic rod, fixed attaching means, connect fixed attaching means one end at the elastic rod to can realize horizontal wave power, perpendicular wave force, total power, do all can direction angle, overturning moment and offset distance's etc. The real -time accurate test of always doing all can always through above setting. Stability and loading analysis for the structure provide required data. The utility model discloses a wave force testing arrangement for wave wall measures and the record based on three component techniques, at first adopt strain rosette technique transfer message, secondly full graetz connection is adopted to the strain rosette, not only satisfies the temperature self compensating but also realize the output signal quadruple and enlarge, adopt the thin pole of rigidity to connect butt joint disc and elastic rod at last to this reinforcing signal reception's the rigidity and the linearity reduce signal distortion.

Description

A kind of wave force proving installation for bulwark

Technical field

The utility model belongs to hydrographic survey system regions, is specifically related to a kind of wave force proving installation for bulwark.

Background technology

In water conservancy project and harbor work's technology, along with the proposition of various novel structure, not specific theory and formula carry out accurate Calculation and act on these structural power, comprise wave force and flow force etc.But these acting forces are the constitutionally stable direct factors of impact, need application model to test the mensuration of carrying out structural stability checking or structural loads, as the measurement etc. of wave force for this reason.In rough-water test or water flow test, total Force meansurement for coast protection works buildings or hydraulic structure adopts two kinds of methods usually, one is that another kind of method uses total force snesor by arranging that pressure probe gathers pressure signal and then obtains total power by interpolation integration.When adopting first method, need to arrange many pressure probes on works surface, because pressure probe experimental enviroment requires higher, there are the fine particle things such as silt to enter into probe inside and just can cause fatefulue damage, experimentation cost is higher, and in addition, integral result error is larger; When adopting traditional total force snesor of S shape to carry out total Force meansurement, often due to the particular/special requirement of structural arrangement, total power of single direction can only be measured, measurement and turriform as carried out bulwark wave force can only complete the measurement of level total power when building the measurement of flow force, metering system is relatively inflexible and single.

Application number is the patent application of " 201410294079.3 ", and disclosed in it is a kind of centrifugal model test wave cycle Load Simulation equipment and method of testing thereof, and equipment is grouped into by control section, drive part and force outlet part; The industrial computer of control section adopts clamping signal condition by number and breakout box connects Driver amplifier; The driving power of drive part connects two drivers by Driver amplifier; The wave force that two drivers of exerting oneself part produce, by hanging on the armature of model casing top cover bottom center, is applied to goal in research in a non contact fashion; Two drivers are separately installed with horizontal displacement laser displacement sensor, sedimentation laser displacement sensor; Driver inside is provided with force snesor; The output of each sensor connects industrial computer.Its design theory followed is all different from the application with the method for thinking and correspondence.

Utility model content

For overcoming the above problems, overcome the defect that existing total force test device degree of accuracy is low, test result is single, the utility model provides a kind of wave force proving installation for bulwark, and it carries out measuring and record based on three component technology; Adopt strain rosette technology transmission of information; Described strain rosette adopts full-bridge type to connect, not only satisfied temperature self compensation but also realize output signal four times amplification; Then, adopt rigid thin rod to connect docking disk and elastic rod, strengthen rigidity and the linearity of Signal reception with this, reduce distorted signals, finally, adopt protective sleeve to be arranged at elastic rod periphery, avoid external environment condition on the impact of measuring accuracy.Its technical scheme is specific as follows:

For a wave force proving installation for bulwark, be arranged on the wall of bulwark, it is characterized in that:

Include on the vertical direction of bulwark body of wall plane of constraint, the docking disk (1) set gradually, elastic rod (2) and fixed constraint part (3),

The surface diameter being connected and fixed attaching means (3) one end at elastic rod (2) arranges three groups of strain rosettes (4),

Three groups of described strain rosettes are two-piece type, and the two panels strain rosette in described three groups and the axis angle of elastic rod are 45 °,

The line of the two panels strain rosette in described first group of strain rosette is parallel to the X axis of plane of constraint,

The line of the two panels strain rosette in described second group of strain rosette is parallel to the Y-axis of plane of constraint,

First group of described strain rosette and second group of strain rosette are that concentric circumferences is arranged,

Film clips are answered to be connected to data collection and analysis instrument (8) by signal shielding line (7) for described three groups.

According to a kind of wave force proving installation for bulwark of the present utility model, it is characterized in that:

Two panels strain rosette in first group of described strain rosette, second group of strain rosette and the 3rd group of strain rosette all accesses Wheatstone bridge in full-bridge mode.

According to a kind of wave force proving installation for bulwark of the present utility model, it is characterized in that:

Described second group of strain rosette and first group of strain rosette place diameter are that 90 ° of angles are arranged.

According to a kind of wave force proving installation for bulwark of the present utility model, it is characterized in that:

Described docking disk (1) connects elastic rod (2) by a rigid thin rod (5).

According to a kind of wave force proving installation for bulwark of the present utility model, it is characterized in that:

Set firmly in the periphery of described elastic rod (2) and put protective sleeve (6),

Described protective sleeve (6) is affixed with fixed constraint part (3).

According to a kind of wave force proving installation for bulwark of the present utility model, it is characterized in that:

Described docking disk (1) diameter is 2.9cm-3.1cm,

Described docking disk (1) thickness is 1.9mm-2.1mm.

According to a kind of wave force proving installation for bulwark of the present utility model, it is characterized in that:

The length of described elastic rod (2) is 19cm-21cm,

The diameter of described elastic rod (2) is 3.9cm-4.1cm.

According to the proving installation of a kind of bulwark wave force of the present utility model, it is characterized in that:

The diameter of described protective sleeve (6) doubles the diameter of elastic rod (2).

According to the proving installation of a kind of bulwark wave force of the present utility model, it is characterized in that:

Shape of threads is arranged at the two ends of described rigid thin rod, described rigid thin rod (5) with dock disk (1) and elastic rod (2) and be and be spirally connected.

A kind of wave force proving installation for bulwark of the present utility model, carries out measuring and record based on three component technology; First strain rosette technology transmission of information is adopted; Secondly, described strain rosette adopts full-bridge type to connect, not only satisfied temperature self compensation but also realize output signal four times amplification; Then, adopt rigid thin rod to connect docking disk and elastic rod, strengthen rigidity and the linearity of Signal reception with this, reduce distorted signals, finally, adopt protective sleeve to be arranged at elastic rod periphery, avoid external environment condition on the impact of measuring accuracy.

A kind of wave force proving installation for bulwark of the present utility model, can realize the accurately test in real time of horizontal wave force, vertical wave power, total power, total force direction angle, upsetting moment and total power offset distance etc., convenient test, fast response time, environmental suitability are strong; Protective sleeve wherein and the setting of rigid thin rod, can avoid external environment condition on the impact of measuring accuracy, and especially wave or current are to the function influence of rod member.

Accompanying drawing explanation

In figure,

Fig. 1 is structural representation of the present utility model;

Fig. 2 is each test data display figure in embodiment;

Be specially, Fig. 2-1 be horizontal wave force data display figure,

Fig. 2-2 be vertical wave force data display figure,

Fig. 2-3 total force data display figure,

Fig. 2-4 total force direction angular data display figure,

Fig. 2-5 moment of torsion (upsetting moment) data display figure,

Fig. 2-6 total power offset distance data display figure;

Fig. 3 is the vertical view of Fig. 1;

Fig. 4 is the side view of Fig. 1;

Fig. 5 is three groups of strain rosette structural representations in the utility model.

In figure, 1 is docking disk; 2 is elastic rod; 3 is fixed constraint part; 4 is strain rosette; 5 is rigid thin rod; 6 is protective sleeve; 7 is signal shielding line; 8 is data collection and analysis instrument.

Embodiment

Below, according to specification drawings and specific embodiments, a kind of wave force proving installation for bulwark of the present utility model is further described in detail.

A kind of wave force proving installation for bulwark as shown in Fig. 1,3,4, is arranged on the wall of bulwark, includes on the vertical direction of bulwark body of wall plane of constraint, the docking disk 1 set gradually, elastic rod 2 and fixed constraint part 3,

The surface diameter being connected and fixed attaching means 3 one end at elastic rod 2 arranges three groups of strain rosettes 4,

Three groups of described strain rosettes are two-piece type, and the two panels strain rosette in described three groups and the axis angle of elastic rod are 45 °,

The line of the two panels strain rosette in described first group of strain rosette is parallel to the X axis of plane of constraint,

The line of the two panels strain rosette in described second group of strain rosette is parallel to the Y-axis of plane of constraint,

First group of described strain rosette and second group of strain rosette are that concentric circumferences is arranged,

Film clips are answered to be connected to data collection and analysis instrument 8 by signal shielding line 7 for described three groups.

Wherein,

Two panels strain rosette in first group of described strain rosette, second group of strain rosette and the 3rd group of strain rosette all accesses Wheatstone bridge in full-bridge mode.(as shown in Figure 5)

Wherein,

Described second group of strain rosette and first group of strain rosette place diameter are that 90 ° of angles are arranged.

Wherein,

Described docking disk 1 connects elastic rod 2 by a rigid thin rod 5.

Wherein,

Set firmly in the periphery of described elastic rod 2 and put protective sleeve 6,

Described protective sleeve 6 is affixed with fixed constraint part (3).

Wherein,

Described docking disk 1 diameter is 2.9cm-3.1cm (being preferably 3),

Described docking disk 1 thickness is 1.9mm-2.1mm (being preferably 2).

Wherein,

The length of described elastic rod 2 is 19cm-21cm (being preferably 20),

The diameter of described elastic rod 2 is 3.9cm-4.1cm (being preferably 4).

Wherein,

The diameter of described protective sleeve 6 doubles the diameter of elastic rod 2.

Wherein,

Shape of threads is arranged at the two ends of described rigid thin rod, described rigid thin rod 5 with dock disk 1 and elastic rod 2 and be and be spirally connected.

A kind of wave force proving installation for bulwark described in the utility model in order to provide measure structure stability and loading analysis needed for data, corresponding test set-up and step as follows:

S1: on the direction vertical with bulwark body of wall plane of constraint, arranges an elastic rod 2, institute by docking disk 1

State elastic rod for responding to and transmitting stressed;

S2: fixed constraint part 3 is set at the other end of elastic rod, the surface diameter being connected and fixed attaching means 3 one end at elastic rod 2 arranges three groups of strain rosettes 4, three groups of described strain rosettes are two-piece type, and the two panels strain rosette in described three groups and the axis angle of elastic rod are 45 °

The line of the two panels strain rosette in described first group of strain rosette is parallel to the X axis of plane of constraint,

The line of the two panels strain rosette in described second group of strain rosette is parallel to the Y-axis of plane of constraint,

First group of described strain rosette and second group of strain rosette are that concentric circumferences is arranged;

S3: the principal strain value ε drawing its elastic rod diameter two ends, place surface location according to the voltage value of first group of strain rosette ₁,

The principal strain value ε of point position is drawn according to the voltage value of second group of strain rosette ₂,

According to principal strain value ε ₁, ε ₂draw the moment M of its elastic rod root section position, place _θwith the deflection θ of the corresponding total power of moment of flexure;

S4: according to first group of strain rosette and cross section, second group of strain rosette place and the M docked in the distance L of disk and step S3 _θdraw body of wall suffered total power F, suffered horizontal force Fx and suffered vertical force Fy;

S5: the shear strain value ε drawing point position according to the voltage value of the 3rd group of strain rosette ₃and torque T;

S6: show that total point of force application departs from the distance d of elastic rod 2 axis according to the total power F in the torque T in step S5 and step S4.(above each data message figure as shown in Figure 2).

Embodiment

A kind of wave force proving installation for bulwark, this proving installation is by docking disk, rigid thin rod, elastic rod, protective sleeve, first group of strain rosette, second group of strain rosette, 3rd group of resistance strain gage, signal shielding line, data collection and analysis instrument and fixed constraint part form (as shown in Figure 1).Wherein said docking disc centre has screw (aperture and rigid thin rod two ends screw thread match), all has 4 screws along circumferential direction; Rigid thin rod two ends are shape of threads; Elastic rod root and fixed constraint part affixed, head has screw thread hole, and is connected with rigid thin rod; Protective sleeve covers on elastic rod outside, affixed with fixed constraint part, and diameter is the twice of elastic rod; First group of strain rosette is arranged in the two ends of elastic rod surface diameter, and strain rosette is 90 ° of angle two-piece types, and during layout, the axis angle of two foil gauges and elastic rod is 45 °; It is the diameter two ends of 90 ° that second group of strain rosette is arranged in first group of strain rosette place diameter angle, and arrangement is identical with first group of strain rosette; 3rd group of strain rosette is arranged in the two ends of elastic rod arbitrary diameter, and arrangement is identical with first group of strain rosette; Strain rosette is connected with data collection and analysis instrument by signal shielding line

Wherein, the length of described elastic rod is 20cm, and diameter is 4cm, protective sleeve diameter 8cm, length 20cm, rigid thin rod diameter 5mm, length 5cm, docking disk diameter 3cm, thickness 2mm.The described first group model to the 3rd group of resistance strain gage is: BX120-2CA, resistance: 120 ± 0.3 Ω, sensitivity coefficient: 2.08 ± 1.0%, sensitive grid length: 2mm.

For arc wave screen, mainly test the seaway load under the effect of cross-section model Wave suffered by it, comprise horizontal wave force, vertical wave power, total power, total force direction angle, upsetting moment and total power offset distance etc.Concrete steps are as follows:

1. by test request, first group to the 3rd group 3 groups of resistance strain gages are pasted at elastic rod lower end side face, then be that reference vehicular is in effect object acting force place plane with elastic rod by proving installation, and first group of foil gauge place diameter be in x to be measured to, second group of strain rosette place diameter be in the y vertical with above-mentioned direction to, be then fixed by fixed constraint part;

2., respectively by first group of strain rosette, second group of strain rosette and the 3rd group of strain rosette access Wheatstone bridge in full-bridge mode;

3. the voltage signal first group of strain rosette and second group of strain rosette full-bridge circuit recorded changes 45 ° of direction strain stress of 2 some positions into divided by 4 _m1' and ε _m2'; The moment M at measuring point place is obtained according to the mechanics of materials bending normal stresses derivation of equation _θand the deflection θ of the corresponding total power of this moment of flexure.

$\frac{2\·{{\mathrm{\ϵ}}_{M1}}^{\′}\·E}{(1-\mathrm{\μ})}=\frac{M_{\mathrm{\θ}}}{W_z}cos\mathrm{\θ}$ Equation (1)

$\frac{2\·{{\mathrm{\ϵ}}_{M2}}^{\′}\·E}{(1-\mathrm{\μ})}=\frac{M_{\mathrm{\θ}}}{W_z}\sin \mathrm{\θ}$ Equation (2)

In formula, E is the elastic modulus≤20Gpa of elastic rod 3;

ε _m1' and ε _m2' represent first group of strain rosette and second group of 45 °, strain rosette point position orientation strain value respectively;

for the bending sections coefficient of elastic rod 3;

M _θit is the moment of flexure in first group of strain rosette and cross section, second group of strain rosette place;

θ is the angle of total power and horizontal direction;

D is the diameter of section of elastic rod 3;

Can draw in conjunction with equation (1) and equation (2)

θ＝arctan(ε _M2′/ε _M1′)，

$M_{\mathrm{\θ}}=\frac{2\·{{\mathrm{\ϵ}}_{M1}}^{\′}\·E\·W_z}{(1-\mathrm{\μ})\·cos\mathrm{\θ}};$

4. first group and second group of strain rosette are L with the distance of docking disk, calculate the suffered total power F of structure,

$F=\frac{M_{\mathrm{\θ}}}{L},$

Horizontal force F _x=Fcos θ,

Vertical force F _y=Fsin θ.

5. the voltage signal of the 3rd group of strain rosette is changed into the strain stress in these 45 ° of orientation, some position divided by 4 _n3',

The torque T on elastic rod is obtained according to the mechanics of materials shear stress derivation of equation.

$T=\frac{W_p\·{{\mathrm{\ϵ}}_{n3}}^{\′}\·E}{(1+\mathrm{\μ})}$

In formula, G is the shear modulus of elastic rod 3;

ε _n3the strain in ' expression 45 ° of orientation, the 3rd group of strain rosette point position;

for the torsion section factor of elastic rod 3.

6. the 5th step gained torque T is obtained divided by the total power F of step 4 gained the distance that total power active position departs from elastic rod axis on the occasion of representing that elastic rod is by counterclockwise moment of torsion, negative value is contrary, thus realizes the accurate location of total power.

The long 50cm of arc wave screen bulwark, after installing proving installation, first by be with the portable electronic of leveling bubble claim respectively in the horizontal direction with the pulling force of a vertical direction effect 10kg, moment of flexure part of detecting is demarcated, then offset certain distance with fixed position and elastic rod perpendicular and offset the pulling force that axial line 3cm place acts on a 5kg, torsion-testing part is demarcated, tests after given calibration coefficient.Because arc wave screen two ends are all provided with this device, the signal gone out by the method and device to test is carried out twice and amplifies time-history curves as shown in Figure 2.

Can it is evident that (as shown in Figure 2 according to test result, be specially 2-1 to 2-6), seaway load, no matter be horizontal wave force, vertical wave power, total power, total force direction angle, moment of torsion (upsetting moment) or total power offset distance, and its response cycle is identical with input wave period, this method of testing and device thereof are accurately and reliably.

A kind of wave force proving installation for bulwark of the present utility model, carries out measuring and record based on three component technology; First strain rosette technology transmission of information is adopted; Secondly, described strain rosette adopts full-bridge type to connect, not only satisfied temperature self compensation but also realize output signal four times amplification; Then, adopt rigid thin rod to connect docking disk and elastic rod, strengthen rigidity and the linearity of Signal reception with this, reduce distorted signals, finally, adopt protective sleeve to be arranged at elastic rod periphery, avoid external environment condition on the impact of measuring accuracy.

A kind of wave force proving installation for bulwark of the present utility model, can realize the accurately test in real time of horizontal wave force, vertical wave power, total power, total force direction angle, upsetting moment and total power offset distance etc., convenient test, fast response time, environmental suitability are strong; Protective sleeve wherein and the setting of rigid thin rod, can avoid external environment condition on the impact of measuring accuracy, and especially wave or current are to the function influence of rod member.

Claims (9)

1., for a wave force proving installation for bulwark, be arranged on the wall of bulwark, it is characterized in that:

Include on the vertical direction of bulwark body of wall plane of constraint, the docking disk (1) set gradually, elastic rod (2) and fixed constraint part (3),

The surface diameter being connected and fixed attaching means (3) one end at elastic rod (2) arranges three groups of strain rosettes (4),

Three groups of described strain rosettes are two-piece type, and the two panels strain rosette in described three groups and the axis angle of elastic rod are 45 °,

The line of the two panels strain rosette in described first group of strain rosette is parallel to the X axis of plane of constraint,

The line of the two panels strain rosette in described second group of strain rosette is parallel to the Y-axis of plane of constraint,

First group of described strain rosette and second group of strain rosette are that concentric circumferences is arranged,

Film clips are answered to be connected to data collection and analysis instrument (8) by signal shielding line (7) for described three groups.

2. a kind of wave force proving installation for bulwark according to claim 1, is characterized in that:

Two panels strain rosette in first group of described strain rosette, second group of strain rosette and the 3rd group of strain rosette all accesses Wheatstone bridge in full-bridge mode.

3. a kind of wave force proving installation for bulwark according to claim 1, is characterized in that:

Described second group of strain rosette and first group of strain rosette place diameter are that 90 ° of angles are arranged.

4. a kind of wave force proving installation for bulwark according to claim 1, is characterized in that:

Described docking disk (1) connects elastic rod (2) by a rigid thin rod (5).

5. a kind of wave force proving installation for bulwark according to claim 1, is characterized in that:

Set firmly in the periphery of described elastic rod (2) and put protective sleeve (6),

Described protective sleeve (6) is affixed with fixed constraint part (3).

6. a kind of wave force proving installation for bulwark according to claim 1, is characterized in that:

Described docking disk (1) diameter is 2.9cm-3.1cm,

Described docking disk (1) thickness is 1.9mm-2.1mm.

7. a kind of wave force proving installation for bulwark according to claim 1, is characterized in that:

The length of described elastic rod (2) is 19cm-21cm,

The diameter of described elastic rod (2) is 3.9cm-4.1cm.

8. one according to claim 5 is used for bulwark wave force proving installation, it is characterized in that:

The diameter of described protective sleeve (6) doubles the diameter of elastic rod (2).

9. one according to claim 4 is used for bulwark wave force proving installation, it is characterized in that:

Shape of threads is arranged at the two ends of described rigid thin rod, described rigid thin rod (5) with dock disk (1) and elastic rod (2) and be and be spirally connected.