CN101881675A - Device and method for measuring horizontal shear of support - Google Patents

Device and method for measuring horizontal shear of support Download PDF

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CN101881675A
CN101881675A CN 201010195304 CN201010195304A CN101881675A CN 101881675 A CN101881675 A CN 101881675A CN 201010195304 CN201010195304 CN 201010195304 CN 201010195304 A CN201010195304 A CN 201010195304A CN 101881675 A CN101881675 A CN 101881675A
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top plate
horizontal
shear
measuring
spherical
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CN 201010195304
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CN101881675B (en )
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彭晓兰
汪强
王进廷
金峰
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清华大学
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Abstract

The invention discloses a device and a method for measuring horizontal shear of a support, and relates to a shear measuring device. Double spherical balls are arranged between a top plate and a frame bottom plate, one end of the spherical ball is embedded into a spherical groove of the top plate, the other end of the spherical ball is embedded into a spherical groove of the frame bottom plate, and the double spherical balls enable the top plate to translate freely with a small amplitude in the random horizontal direction; a metal bar is horizontally suspended, one end of the metal bar is fixed on the rim of the frame bottom plate, the other end of the metal bar is contacted with the lateral surface of the top plate, and a strain sheet is stuck to the middle part of the steel bar; an accelerator is arranged on the lateral surface of the top plate; and the top plate translates freely in the random horizontal direction to press the metal bar so that the metal bar is deformed, an axial force of the metal bar is calculated by measuring the strain of the metal bar, and the horizontal shear of the support is obtained. The method can overcome the defects that the conventional measuring method has fussy calibration and only can measure the unidirectional horizontal shear; a horizontal shear vector of the support can be measured by arranging the device between a model and a foundation; and the device and the method are suitable for any structure, do not need calibration, and have low cost.

Description

支座水平剪力测量装置及测量方法 Carrier level measurement apparatus and measurement method of shear

技术领域 FIELD

[0001] 本发明涉及剪力测量装置,具体的说是涉及一种能测量动力过程中固端支座或铰接支座处支座水平剪力的测量装置,以及利用该装置进行支座水平剪力测量的方法。 [0001] The present invention relates to a shear measurement device, specifically, to an apparatus capable of measuring the dynamic process the solid support at the end of the support or support hinged horizontal shear force, and utilizing the shear horizontal support means the method of measuring the force.

背景技术 Background technique

[0002] 近年来,实时耦联动力试验方法得到了快速发展。 [0002] In recent years, real-coupled dynamic test has been rapid development. 实时耦联动力试验方法是一种新型结构动力试验方法,测量支座处水平剪力是这种实验方法常用的一项技术要求。 Real-time dynamic test is coupled to a new dynamic test structures, the level measured at the support shear test method is used that a technical requirement.

[0003] 目前,公知的测量支座水平剪力的方法是应变测量法。 [0003] Currently, methods for measuring the level of support is known shear strain measurement method. 但该法仅适用于支座处局部应变便于测得的弹性杆件结构,测量器材包括:顶部荷载施加装置、应变片、导线、数据采集终端。 However, the law applies only to facilitate the support of the local strain measured elastic rod member structure, the measuring equipment comprising: means applying a top load, strain gauges, wire, data collection terminal. 应变片贴在支座处杆件的两侧,用导线连接到数据采集终端。 Strain gauges attached to the support member at both sides of the lever, connected to the data collection terminal with a wire. 第一步,标定得到应力应变曲线:对结构施加水平已知力,通过应变片测出支座处应力。 The first step, calibration of the stress-strain curve: applying a known force to the level of the structure, the stress detected by the strain of the support sheet. 采集若干组数据,拟合得出“水平力-应变”曲线。 Collecting a plurality of sets of data, derived fitting "horizontal force - strain" curve. 第二步,进行实际的动力试验,测出支座处应变,根据“水平力_应变”曲线反求水平力,即为该方向上的水平支座剪力。 A second step, the actual dynamic tests, the strain measured at the supports, according to the horizontal force seeking "_ horizontal force strain" curve trans, namely shear horizontal support in this direction.

[0004] 另有一种单向支座剪力测量装置,利用滑轨解除水平单向约束,通过测金属棒的轴力来测得水平单向的剪力,但是这种装置的局限性在于仅能测单向剪力,测量结果是一个标量。 [0004] Another one-way bearing shear measurement device, using a slide-way constraint release level to the level measured by the unidirectional shear force sensing axis of the metal rod, but the limitations of this arrangement is that only unidirectional shear can be measured, the measurement result is a scalar.

发明内容 SUMMARY

[0005] 为了克服现有的应变测量方法适用条件苛刻、标定过程繁琐,以及单向支座剪力测量装置仅能测量单向剪力的不足,本专利提供一种支座水平剪力测量装置,该装置不仅适用于任何结构,无需标定,而且能测量水平面上的支座剪力矢量。 [0005] In order to overcome the conventional strain measuring method suitable for harsh conditions, the calibration process is cumbersome, and the one-way bearing shear measurement device can only measure the shear inadequate way, this patent provides a carrier level measuring device Shear the device is not only applicable to any structure, without calibration, but also can measure the shear vector bearing the horizontal plane.

[0006] 本发明采用的技术方案为:双球形滚珠安装在顶板和框形底板之间,一端嵌于顶板的球形凹槽内,另一端嵌于框形底板的球形凹槽内;所述双球形滚珠与所述两个球形凹槽的间隙填满固态润滑油,双球形滚珠能使顶板在水平任意方向上小幅度自由平动,即去掉水平面上的约束;金属棒水平悬臂安装,金属棒的一端固定于框形底板的边框上,另一端磨平,和顶板侧面接触;加速度计置于顶板的侧面;金属棒的中部贴有应变片,应变信号通过导线传入数据采集系统;顶板在水平任意方向上自由平动,压迫金属棒使之变形,通过测量金属棒的应变,计算出金属棒的轴力并得到支座水平剪力。 [0006] aspect of the present invention is used are: bis spherical balls mounted between the top plate and the frame-shaped plate, one end embedded in the spherical recess of the top plate, and the other end embedded in the spherical recess of the frame-shaped base plate; the bis spherical balls with a gap between the two spherical recesses filled with solid lubricants, bis spherical balls allows the top plate consisting of a small amplitude in a horizontal translational movement in any direction, i.e. the horizontal plane to remove the bound; horizontal metal bars mounted cantilever, a metal rod one end fixed to the frame of the frame-shaped base plate, the other end polished, and the top flank contact; accelerometer disposed top plate side surface; the central metal rod affixed to the strain gauge by a wire strain signal incoming data acquisition system; top plate freely in any direction in the horizontal translation, compression deforming a metal rod, a metal rod by measuring the strain calculated axial force and to obtain a metal rod shear mount level.

[0007] 所述框形底板边框的每条边上均安装两根金属棒,分布在两个正交的X方向和Y 方向上。 Each side of the [0007] frame-shaped base frame are mounted two metal rods, distributed in the two X and Y directions orthogonal.

[0008] 所述金属棒使用的材料包括铝合金、普通碳素钢、合金钢。 [0008] The use of metal rod material comprises an aluminum alloy, plain carbon steel, alloy steel.

[0009] 所述双球形滚珠的数量为4个或4个以上。 Quantity [0009] The dual four or more of spherical balls or four.

[0010] 所述双球形滚珠的两个球体半径相同,两个球体的球心连线在两球体相交部分的长度为球体半径的1/3-1/2。 [0010] two of the same spherical radius of the double spherical balls, the spherical center of the two spheres intersect in two wiring length of the portion of the sphere the spherical radius 1 / 3-1 / 2.

[0011] 一种使用所述的支座水平剪力测量装置进行支座水平剪力测量的方法,包括以下步骤:[0012] (1)将所述支座水平剪力测量装置安装在待测模型和原支座之间,待测模型固定于顶板上,框形底板固定于原支座上; [0011] using a shear horizontal support said measuring device performs measurement of the shear horizontal support method, comprising the steps of: [0012] (1) the carrier level measuring device is mounted on the shear test between the model and the original carrier, the test model is fixed to the top plate, the bottom plate is fixed to the frame-shaped primary carrier;

[0013] (2)通过应变片测出金属棒的形变量ε χ、ε y,通过加速度计测出顶板的加速度ax 和ay,测量金属棒的横截面积A和顶板的质量m ; [0013] (2) measured by the strain gauge of the metal rod deformation ε χ, ε y, measured by the accelerometer and acceleration ax roof ay, cross-sectional area A measured mass m and the top plate of the metal bars;

[0014] (3)通过公式Fx = EA ε x+max和Fy = EA ε y+may,即得水平剪力的矢量,其中E为金属棒的弹性模量。 [0014] (3) by the formula Fx = EA ε x + max and Fy = EA ε y + may, to obtain the horizontal shearing force vector, wherein E is the elastic modulus of the metal bar.

[0015] 所述金属棒使用的材料包括铝合金、普通碳素钢、合金钢。 The [0015] use of the metal rod material comprises an aluminum alloy, plain carbon steel, alloy steel.

[0016] 本发明专利的有益效果是:只需将该装置安装在模型和基础之间,就可以测出支座处的水平剪力矢量,适用于任何结构,无需标定,使用方便,测量结果准确,成本低廉,市场竞争力强。 [0016] Advantageous effects of the present invention patent are: the device is simply mounted between the model and the base, the horizontal shear forces can be measured at the support vector, any suitable structure, without calibration, easy to use, measurements accurate, low cost, competitive market.

附图说明 BRIEF DESCRIPTION

[0017] 图1为所述支座水平剪力测量装置的结构示意图。 [0017] FIG. 1 is a schematic view of the abutment of the horizontal shearing force measuring device.

[0018] 图2为双球形滚珠在平面上的投影图。 [0018] FIG. 2 is a double spherical balls on the plane of projection of FIG.

[0019] 图中标号: [0019] FIG numeral:

[0020] 1-顶板;2-框形底板;3-双球形滚珠;4-金属棒;5-应变片;6-加速度计。 [0020] 1- roof; 2- frame-shaped base plate; 1,3-bis spherical balls; 4- metal rod; 5- strain gauge; 6- accelerometer. 具体实施方式 detailed description

[0021] 本发明提供了一种能测量动力过程中固端支座或铰接支座处支座水平剪力的测量装置,以及利用该装置进行支座水平剪力测量的方法,下面结合附图和具体实施方式对本发明做进一步说明。 [0021] The present invention provides a method capable of measuring means at the end of pivoting support cradle or support the solid horizontal shear dynamic process, and utilizing the shear horizontal support means measured DRAWINGS and DETAILED DESCRIPTION The present invention is further described.

[0022] 如图1所示,4个双球形滚珠3安装在顶板1和框形底板2之间,双球形滚珠3的一端嵌于顶板1的球形凹槽内,另一端嵌于框形底板2的球形凹槽内;球形凹槽半径比双球形滚珠3的一个球体半径略大,两者间隙填满固态润滑油;双球形滚珠3不仅能使顶板1在水平任意方向上小幅度自由平动,而且能够防止顶板1在振动的过程中掀起。 [0022] As illustrated, four pairs of spherical balls 3 mounted between the top plate 1 and a frame-shaped base plate 2, 3 is one end of a double spherical balls embedded in the spherical recess of the top plate 1, and the other end embedded in the frame-shaped plate 2, the spherical recess; spherical recess a spherical radius than the radius of the double spherical balls 3 is slightly larger, both the solid lubricant to fill the gap; bis spherical balls 3 only allows the top plate 1 in the horizontal direction, any small amplitude level consisting of movable, and the top plate 1 can be prevented during the off vibrations.

[0023] 底板边框2的每条边上均安装两根铝合金金属棒4,分布在两个正交的方向上,定义其中一个方向为χ方向,另一个为Y方向;金属棒4水平悬臂安装,仅一端固定在底板边框2上,另一端磨平,和顶板1的侧面良好接触以传递压力;金属棒4的中部贴有应变片5, 应变信号通过导线传入数据采集系统,加速度计6置于顶板1的侧面。 Each edge of the [0023] base frame 2 are two aluminum metal rod 4 is mounted, distributed in two orthogonal directions, one direction in which the definition of χ direction, the other is the Y-direction; horizontal metal bar boom 4 installation, only one end fixed to the base frame 2, the other end polished, and a good contact of the side surface of the top plate 1 to the delivery pressure; central metal rod 4 strain gauges affixed to 5, passing through the wire strain signal data acquisition system, an accelerometer 6 is placed in a side surface of the top plate. 顶板1平动时压迫金属棒4使之变形,通过测量X向和Y向金属棒的形变,可计算金属棒轴力来得到水平面上支座剪力矢量。 Compression deformation so that the metal rod 4 of the top plate 1 translation, the deformation of the metal rod, the metal rod may be calculated by measuring the axial force to the X and Y to obtain a shear force vector bearing the horizontal plane.

[0024] 如图2所示,所述双球形滚珠3的两个球体半径相同,两个球体的球心连线在两球体相交部分的长度为球体半径的1/3。 [0024] As shown, the two 2-bis spherical balls same spherical radius. 3, the spherical center of the two spheres intersect in two spheres wiring length of the portion of 1/3 of the sphere radius.

[0025] 使用所述装置进行支座水平剪力测量时,将所述支座水平剪力测量装置安装在待测模型和原支座之间,待测模型固定于顶板1上,框形底板2固定于原支座上,相当于去掉模型在水平面上的约束,将原支座变为滑移支座,将测支座剪力转化成测金属棒4的轴力。 When [0025] using the device for measuring the shear horizontal carrier, the carrier level measuring device is mounted between the shear test model and the original carrier, the test model is fixed to the top plate 1, frame-shaped plate 2 is fixed to the original carrier, corresponds to remove the constraints of the model in the horizontal plane, becomes the original sliding bearing support, converted to the measured axial force bearing shear test metal rod 4. 通过应变片5测出金属棒4的形变量ε χ、ε y,通过加速度计测出顶板1的加速度ax和ay, 测量金属棒4的横截面积A和顶板1质量m。 5 measured by strain gauge metal rod 4 of deformation ε χ, ε y, measured by the acceleration ax and ay top plate 1 by the acceleration measuring metal rod cross-sectional area A 1 and the top plate 4 of the mass m. 用动力平衡法计算,易得:FX = EA ε x+max和Fy = EA ε y+may ;即得水平剪力的矢量,其中E为金属棒4的弹性模量。 Dynamic equilibrium calculation method, easy to get: FX = EA ε x + max and Fy = EA ε y + may; horizontal shear force to obtain a vector, where E is the elastic modulus of the metal rod 4. 由于球面接触摩擦力计算复杂,且润滑油作用下摩擦力影响很小,可以忽略。 Since the complex calculations spherical contact friction, the friction force and the lower the lubricant has little effect and can be ignored.

Claims (7)

  1. 一种支座水平剪力测量装置,其特征在于,双球形滚珠(3)安装在顶板(1)和框形底板(2)之间,一端嵌于顶板(1)的球形凹槽内,另一端嵌于框形底板(2)的球形凹槽内;所述双球形滚珠(3)与所述两个球形凹槽的间隙填满固态润滑油,双球形滚珠(3)能使顶板(1)在水平任意方向上小幅度自由平动,即去掉水平面上的约束;金属棒(4)水平悬臂安装,金属棒(4)的一端固定于框形底板(2)的边框上,另一端磨平,和顶板侧面接触;加速度计(6)置于顶板(1)的侧面;金属棒(4)的中部贴有应变片(5),应变信号通过导线传入数据采集系统;顶板(1)在水平任意方向上自由平动,压迫金属棒(4)使之变形,通过测量金属棒(4)的应变,计算出金属棒(4)的轴力并得到支座水平剪力。 One kind of horizontal shear bearing measuring apparatus, characterized in that the bis spherical balls (3) is mounted between the top plate (1) and the frame-shaped base plate (2), one end embedded in the spherical recess of the top plate (1), and the other one end embedded in the frame-shaped base plate (2) a spherical recess; said double spherical balls (3) with a gap between the two spherical recesses filled with solid lubricants, bis spherical balls (3) allows the top plate (1 ) in the horizontal direction of the small amplitude of any translational freedom, i.e. to remove constraints horizontal plane; on one end of a metal rod (4) is cantilevered horizontally, a metal rod (4) is fixed to the frame-shaped base plate (2) of the frame, the other end of the grinding flat, and the top flank contact; accelerometer (6) placed on the side of the top plate (1); a central metal rod (4) is affixed to the strain gauges (5), the strain signals into the data acquisition system through wires; plate (1) free translation in a horizontal arbitrary direction, compression of the metal bar (4) to be deformed by strain measuring metal rod (4), and calculates the metal rod (4) bearing axial force and with the horizontal shearing force.
  2. 2.根据权利要求1所述的一种支座水平剪力测量装置,其特征在于,所述框形底板(2) 边框的每条边上均安装两根金属棒(4),分布在两个正交的X方向和Y方向上。 2. A holder according to one of the horizontal shearing force measuring device according to claim 1, wherein each side of said frame plate (2) are mounted two metal frame (4), distributed in two X and Y directions of the orthogonal.
  3. 3.根据权利要求1所述的一种支座水平剪力测量装置,其特征在于,所述金属棒(4)使用的材料包括铝合金、普通碳素钢、合金钢。 A carrier level measurement apparatus according to the shear according to claim 1, characterized in that the material of the metal bar (4) used comprises an aluminum alloy, plain carbon steel, alloy steel.
  4. 4.根据权利要求1所述的一种支座水平剪力测量装置,其特征在于,所述双球形滚珠(3)的数量为4个或4个以上。 4. A holder according to one of the horizontal shearing force measuring device according to claim 1, wherein the number of said double spherical balls (3) is 4 or more, or four.
  5. 5.根据权利要求1所述的一种支座水平剪力测量装置,其特征在于,所述双球形滚珠(3)的两个球体半径相同,两个球体的球心连线在两球体相交部分的长度为球体半径的1/3-1/2。 5. A holder according to one of the horizontal shearing force measuring device according to claim 1, wherein said bis identical spherical balls (3) of the two radius of the sphere, the sphere center of the two spheres intersect in two spheres connection length of the portion of a sphere of radius 1 / 3-1 / 2.
  6. 6. 一种使用权利要求1所述的支座水平剪力测量装置进行支座水平剪力测量的方法, 其特征在于,包括以下步骤:将所述支座水平剪力测量装置安装在待测模型和原支座之间,待测模型固定于顶板(1)上,框形底板(2)固定于原支座上;通过应变片(5)测出金属棒⑷的形变量£ x、ey,通过加速度计(6)测出顶板的加速度ax和ay,测量金属棒的横截面积A和顶板的质量m ;通过公式Fx = EA e x+max和Fy = EA £ y+may,即得水平剪力的矢量,其中E为金属棒⑷ 的弹性模量。 Horizontal shear bearing measuring apparatus according to claim 1 6. A method of using the horizontal shearing force measuring bearing, characterized by comprising the steps of: measuring the carrier device is mounted on the horizontal shear test between the model and the original carrier, the test model is fixed to the top plate (1), frame-shaped base plate (2) fixed to the primary carrier; by strain gauges (5) determining the deformation of the metal rod ⑷ £ x, ey by an accelerometer (6) determining the acceleration ax and ay top plate, the cross sectional area a measured mass m and the top plate of the metal rod; by the formula Fx = EA e x + max and Fy = EA £ y + may, to obtain the horizontal shear force vector, where E is the modulus of elasticity of the metal rod ⑷.
  7. 7.根据权利要求6所述的一种支座水平剪力测量的方法,其特征在于,所述金属棒(4) 使用的材料包括铝合金、普通碳素钢、合金钢。 The method of measuring the carrier level of shear as claimed in claim 6, wherein the material of the metal bar (4) used comprises an aluminum alloy, plain carbon steel, alloy steel.
CN 201010195304 2010-05-31 2010-05-31 Device and method for measuring horizontal shear of support CN101881675B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104006829A (en) * 2014-05-20 2014-08-27 清华大学 Shearing force measuring device and measuring method suitable for real-time dynamic hybrid tests

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US3693425A (en) * 1970-04-30 1972-09-26 Joseph M Starita Force measuring apparatus
US3985025A (en) * 1975-01-20 1976-10-12 Ormond Alfred N Shear measuring flexure isolated load cells
DE10055933A1 (en) * 2000-11-10 2002-05-23 Hbm Mes Und Systemtechnik Gmbh Recorder for measuring applied forces has a rotationally symmetric body with measurement legs arranged between through holes on which strain gages are placed to measure shear forces, which are insensitive to load placement
CN201382828Y (en) * 2009-03-30 2010-01-13 蓉 黄 Shear test apparatus

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Publication number Priority date Publication date Assignee Title
US3693425A (en) * 1970-04-30 1972-09-26 Joseph M Starita Force measuring apparatus
US3985025A (en) * 1975-01-20 1976-10-12 Ormond Alfred N Shear measuring flexure isolated load cells
DE10055933A1 (en) * 2000-11-10 2002-05-23 Hbm Mes Und Systemtechnik Gmbh Recorder for measuring applied forces has a rotationally symmetric body with measurement legs arranged between through holes on which strain gages are placed to measure shear forces, which are insensitive to load placement
CN201382828Y (en) * 2009-03-30 2010-01-13 蓉 黄 Shear test apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104006829A (en) * 2014-05-20 2014-08-27 清华大学 Shearing force measuring device and measuring method suitable for real-time dynamic hybrid tests

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