CN203894111U - Electrical measuring device of elastic modulus of static pressure - Google Patents
Electrical measuring device of elastic modulus of static pressure Download PDFInfo
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- CN203894111U CN203894111U CN201420233725.0U CN201420233725U CN203894111U CN 203894111 U CN203894111 U CN 203894111U CN 201420233725 U CN201420233725 U CN 201420233725U CN 203894111 U CN203894111 U CN 203894111U
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Abstract
本实用新型属于建筑材料检测技术领域，具体涉及一种混凝土静力受压弹性模量电测装置，该装置包括压力应变数据采集仪、连接导线、应变片辅助粘贴设备和压力传感器；应变片辅助粘贴设备包括盖板，盖板中央具有应变片粘贴孔；连接导线一端与测试件上粘贴的应变片相连，另一端与压力应变数据采集仪电连接；压力应变数据采集仪与压力传感器电连接。通过该装置利用电测法原理可实现方便、准确、快速测定混凝土静力受压弹性模量的目的。
The utility model belongs to the technical field of building material detection, and in particular relates to an electrical measuring device for concrete static pressure elastic modulus. The pasting equipment includes a cover plate with a strain gauge sticking hole in the center of the cover plate; one end of the connecting wire is connected to the strain gauge pasted on the test piece, and the other end is electrically connected to the pressure and strain data acquisition instrument; the pressure and strain data acquisition instrument is electrically connected to the pressure sensor. The purpose of conveniently, accurately and quickly measuring the elastic modulus of concrete under static pressure can be realized by using the principle of the electric measuring method through the device.
Description
技术领域 technical field
本实用新型属于建筑材料检测技术领域，具体涉及一种混凝土静力受压弹性模量电测装置。 The utility model belongs to the technical field of building material detection, in particular to an electric measuring device for concrete static pressure elastic modulus.
背景技术 Background technique
目前，公知的混凝土静力受压弹性模量测定方法为微变形测量仪法，设备主要由千分表和固定支架组成，其存在安装调试复杂、数据离散、试验无效比例高的问题，鉴于目前实际工程中试件留样数量有限，经常造成无法为工程结构准确提供静力受压弹性模量数据的问题，给工程施工带来不必要的困难。 At present, the well-known method for measuring the elastic modulus of concrete under static compression is the micro-deformation measuring instrument method. The equipment is mainly composed of a dial gauge and a fixed bracket. It has the problems of complicated installation and debugging, discrete data, and a high proportion of invalid tests. In actual engineering, the number of specimens reserved is limited, which often leads to the problem that the elastic modulus data under static compression cannot be accurately provided for the engineering structure, which brings unnecessary difficulties to the engineering construction.
发明内容 Contents of the invention
为了克服现有的测定方法调试繁琐、数据离散、试验无效比例高的缺陷，本实用新型提供一种混凝土静力受压弹性模量电测装置，该装置能够快速、稳定且准确地实现混凝土静力受压弹性模量的测定。 In order to overcome the defects of cumbersome debugging, discrete data, and high invalid ratio of tests in the existing measurement methods, the utility model provides an electric measuring device for concrete static compression elastic modulus, which can quickly, stably and accurately realize concrete static Determination of modulus of elasticity under force.
为了解决上述技术问题，本实用新型采用如下技术方案： In order to solve the above technical problems, the utility model adopts the following technical solutions:
一种混凝土静力受压弹性模量电测装置，包括压力应变数据采集仪、连接导线、应变片辅助粘贴设备和压力传感器；应变片辅助粘贴设备包括盖板，盖板中央具有应变片粘贴孔；连接导线一端与测试件上粘贴的应变片相连，另一端与压力应变数据采集仪电连接；压力应变数据采集仪与压力传感器电连接。 An electrical measuring device for concrete static compression elastic modulus, including a pressure-strain data acquisition instrument, connecting wires, auxiliary strain gauge pasting equipment, and a pressure sensor; the strain gauge auxiliary pasting equipment includes a cover plate, and the center of the cover plate has a strain gauge pasting hole ; One end of the connecting wire is connected to the strain gauge pasted on the test piece, and the other end is electrically connected to the pressure-strain data acquisition instrument; the pressure-strain data acquisition instrument is electrically connected to the pressure sensor.
进一步的，所述应变片粘贴孔为哑铃型，两端具有粘接剂处理孔。 Further, the sticking holes of the strain gauges are dumbbell-shaped, with adhesive processing holes at both ends.
进一步的，所述应变片粘贴孔中部下端附有刻度尺。 Further, a scale is attached to the lower end of the middle part of the sticking hole of the strain gauge.
进一步的，所述盖板边缘设有盖板挡板。 Further, the edge of the cover is provided with a cover baffle.
进一步的，所述应变片辅助粘贴设备还包括底座，底部边缘处设有底座挡板。 Further, the strain gauge auxiliary sticking device also includes a base, and a base baffle is provided at the bottom edge.
进一步的，所述连接导线分为补偿片连接导线和测试片连接导线，补偿片连接导线的一端温度补偿应变片相连接，另一端与应变数据采集仪电连接；测试片连接导线的一端与试应变片相连接，另一端与压力应变数据采集仪电连接。 Further, the connecting wires are divided into the connecting wires of the compensation sheet and the connecting wires of the test sheet, one end of the connecting wire of the compensation sheet is connected to the temperature compensation strain gauge, and the other end is electrically connected to the strain data acquisition instrument; one end of the connecting wire of the test sheet is connected to the test piece. The strain gauges are connected, and the other end is electrically connected with the pressure and strain data acquisition instrument.
进一步的，所述压力传感器底部固定有钢垫板。 Further, a steel backing plate is fixed at the bottom of the pressure sensor.
进一步的，所述钢垫板的尺寸为150mm×150mm×20mm。 Further, the size of the steel backing plate is 150mm×150mm×20mm.
进一步的，所述应变数据采集仪包括控制按钮，压力显示屏和应变显示屏，压力显示屏和应变显示屏分别用于显示压力、应变数据；控制按钮用于开关机、应力清零、应变清零、应力保存、应变保存。 Further, the strain data acquisition instrument includes a control button, a pressure display screen and a strain display screen, and the pressure display screen and the strain display screen are used to display pressure and strain data respectively; Zero, Stress Preservation, Strain Preservation.
本实用新型的有益效果：该装置结构简单，操作方便，可以快速、稳定、准确地测定混凝土静力受压弹性模量，为工程项目提供可靠的参数支持。 Beneficial effects of the utility model: the device has a simple structure and is easy to operate, and can quickly, stably and accurately measure the elastic modulus of concrete under static pressure, and provide reliable parameter support for engineering projects.
附图说明 Description of drawings
图1是应变片辅助粘贴设备盖板示意图； Figure 1 is a schematic diagram of the cover plate of the strain gauge auxiliary bonding equipment;
图2是应变片辅助粘贴设备底座示意图； Figure 2 is a schematic diagram of the base of the strain gauge auxiliary bonding equipment;
图3是双通道全桥压力及应变数据采集仪、连接导线、压力传感器连接示意图； Figure 3 is a schematic diagram of the dual-channel full-bridge pressure and strain data acquisition instrument, connecting wires, and pressure sensors;
其中：1.应变片粘贴孔，2.粘结剂处理孔，3.刻度尺，4.盖板挡板，5.底座挡板，6.底座，7.压力传感器，8.钢垫板，9.平口接线夹，10.补偿片连接导线，11.测试片连接导线，12.控制按钮，13.压力显示屏，14.应变显示屏，15.压力应变数据采集仪。 Among them: 1. Strain gauge bonding hole, 2. Adhesive treatment hole, 3. Scale, 4. Cover baffle, 5. Base baffle, 6. Base, 7. Pressure sensor, 8. Steel backing plate, 9. Flat terminal clamp, 10. Compensation piece connection wire, 11. Test piece connection wire, 12. Control button, 13. Pressure display screen, 14. Strain display screen, 15. Pressure and strain data acquisition instrument.
具体实施方式 Detailed ways
如图1至图3所示，一种混凝土静力受压弹性模量电测装置，包括压力应变数据采集仪15、连接导线、应变片辅助粘贴设备和底部固定150mm×150mm×20mm钢垫板8的压力传感器7。 As shown in Figures 1 to 3, a concrete static compression elastic modulus electric measuring device includes a pressure and strain data acquisition instrument 15, connecting wires, strain gauge auxiliary sticking equipment and a fixed 150mm×150mm×20mm steel backing plate at the bottom 8 pressure sensors 7 .
应变片辅助粘贴设备包括盖板和底座6，盖板与底座6配合使用，均用薄不锈钢板制作。盖板中央具有一个哑铃型应变片粘贴孔1，盖板四周具有盖板挡板4，哑铃型应变片粘贴孔1的两端用于排除粘接剂使用时所产生的气泡，称为粘接剂处理孔2。应变片粘贴在应变片粘贴孔1的中部，应变片粘贴孔1中部的下端贴有刻度尺3，用于测量所要粘贴应变片间的距离。应变片辅助粘贴设备的底座6的边缘处设有底座挡板5，用于放置测试件。 The strain gauge auxiliary pasting equipment includes a cover plate and a base 6, and the cover plate and the base 6 are used in conjunction with each other and are all made of thin stainless steel plates. There is a dumbbell-shaped strain gauge sticking hole 1 in the center of the cover plate, and there are cover plate baffles 4 around the cover plate. The two ends of the dumbbell-shaped strain gauge sticking hole 1 are used to eliminate the air bubbles generated when the adhesive is used, which is called bonding. Agent treatment hole 2. The strain gauge is pasted in the middle of the strain gauge pasting hole 1, and the lower end of the middle part of the strain gauge pasting hole 1 is pasted with a scale 3 for measuring the distance between the strain gauges to be pasted. A base baffle 5 is provided at the edge of the base 6 of the strain gauge auxiliary sticking device for placing the test piece.
连接导线分为补偿片连接导线10和测试片连接导线11，补偿片连接导线10的一端通过平口接线夹9与温度补偿应变片相连接，另一端与压力应变数据采集仪15电连接。测试片连接导线11的一端通过平口接线夹9与测试应变片相连接，另一端与压力应变数据采集仪15电连接。 The connection wires are divided into a compensation sheet connection wire 10 and a test piece connection wire 11. One end of the compensation sheet connection wire 10 is connected to the temperature compensation strain gauge through a flat terminal clip 9, and the other end is electrically connected to the pressure and strain data acquisition instrument 15. One end of the test piece connecting wire 11 is connected to the test strain gauge through the flat terminal clamp 9 , and the other end is electrically connected to the pressure and strain data acquisition instrument 15 .
压力应变数据采集仪15包括控制按钮12，压力显示屏13和应变显示屏14，控制按钮用于开关机、应力清零、应变清零、应力保存、应变保存。双通道全桥压力应变数据采集仪13与底部固定钢垫板8的压力传感器7电连接，继而实现压力和应变数据的同步采集，并分别通过压力显示屏11和应变显示屏12显示数据。 The pressure and strain data acquisition instrument 15 includes a control button 12, a pressure display screen 13 and a strain display screen 14. The control buttons are used for switching on and off, stress reset, strain reset, stress storage, and strain storage. The dual-channel full-bridge pressure-strain data acquisition instrument 13 is electrically connected to the pressure sensor 7 fixed to the steel backing plate 8 at the bottom, and then realizes the simultaneous acquisition of pressure and strain data, and displays the data through the pressure display screen 11 and the strain display screen 12 respectively.
该装置的测试过程如下： The testing process of the device is as follows:
混凝土静力受压弹性模量标准试件养护到龄期后，将测试件放置于图2所示的应变片粘贴辅助设备底座6上的底座挡板5之间，测试件需要粘贴应变片的侧面朝上，将图1所示的应变片辅助粘贴设备盖板放置于测试件顶面，盖板挡板4紧贴测试件边缘，用砂纸将应变片粘贴孔1部位的混凝土表面打磨干净后轻轻涂抹一薄层粘结剂，然后利用刻度尺3在应变片粘贴孔1中部粘贴应变片，并通过反复推挤的方式将多余的粘结剂及空气排至粘结剂处理孔2处，检查粘贴密实后即实现了该部位应变片的粘贴。在应变片辅助粘贴设备底座上翻转试件180°，重复上述程序实现该试件上第2片应变片的粘贴。考虑到测试中的温度补偿与实现全桥方式电测量，粘贴的应变片分为测试应变片和温度补偿应变片，且测试应变片和温度补偿应变片规格相同。 After the concrete static compression modulus of elasticity standard specimen is cured to its age, the test piece is placed between the base baffles 5 on the base 6 of the auxiliary equipment for strain gauge attachment shown in Figure 2. The test piece needs to be pasted with strain gauges. With the side facing up, place the cover plate of the strain gauge auxiliary bonding equipment shown in Figure 1 on the top surface of the test piece. The cover baffle plate 4 is close to the edge of the test piece, and the concrete surface of the strain gauge sticking hole 1 is polished with sandpaper. Gently apply a thin layer of adhesive, then use the scale 3 to paste the strain gauge in the middle of the strain gauge attachment hole 1, and discharge the excess adhesive and air to the adhesive treatment hole 2 by repeatedly pushing , After checking that the pasting is dense, the pasting of the strain gauge at this part is realized. Turn the specimen 180° on the base of the strain gauge auxiliary pasting equipment, repeat the above procedure to realize the pasting of the second strain gauge on the specimen. Considering the temperature compensation in the test and the realization of full-bridge electrical measurement, the pasted strain gauges are divided into test strain gauges and temperature compensation strain gauges, and the specifications of the test strain gauges and temperature compensation strain gauges are the same.
粘接剂固化后将图2所示装置中的两根补偿片连接导线10通过平口接线夹9和测试件中的两片温度补偿应变片连接，将两根测试片连接导线11通过平口接线夹9测试试件中的两片测试应变片连接，检查电路无误后将测试件放置于压力试验机压板上，将底部固定钢垫板8的压力传感器7放置于试件顶部，钢垫板8与试件边缘对齐，按规定的压力及方式加载，通过压力应变数据采集仪13同步采集压力和应变数据，并分别通过压力显示屏11和应变显示屏12显示数据，加载完毕记录数据后即实现了混凝土静力受压弹性模量的测定。本实用新型公开的测试装置，不仅可以同步测定压力和应变，还可以分别单独测定，不仅可以用于混凝土静力受压弹性模量的测定，也可以用于其它场合。 After the adhesive is cured, connect the two connecting wires 10 of the compensation sheet in the device shown in Fig. 2 to the two temperature compensating strain gauges in the test piece through the flat junction clip 9, and connect the two connecting wires 11 of the test piece through the flat junction clip 9 Test the connection of the two test strain gauges in the test piece. After checking that the circuit is correct, place the test piece on the pressing plate of the pressure testing machine, and place the pressure sensor 7 with the steel backing plate 8 fixed at the bottom on the top of the test piece. The steel backing plate 8 and The edge of the specimen is aligned, loaded according to the specified pressure and method, and the pressure and strain data are collected synchronously through the pressure-strain data acquisition instrument 13, and the data are displayed on the pressure display screen 11 and the strain display screen 12 respectively. After the data is loaded and recorded, it is realized. Determination of the modulus of elasticity of concrete under static compression. The testing device disclosed in the utility model can not only measure the pressure and the strain simultaneously, but also measure them separately, and can be used not only for measuring the elastic modulus of concrete under static pressure, but also for other occasions.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088731A (en) * | 2017-11-29 | 2018-05-29 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of aircraft nose landing gear outer barrel strut connector launch slow test method |
| CN112881179A (en) * | 2021-03-26 | 2021-06-01 | 中国科学院武汉岩土力学研究所 | Soil body tester based on soil body elasticity test and test method thereof |
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2014
- 2014-05-08 CN CN201420233725.0U patent/CN203894111U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088731A (en) * | 2017-11-29 | 2018-05-29 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of aircraft nose landing gear outer barrel strut connector launch slow test method |
| CN112881179A (en) * | 2021-03-26 | 2021-06-01 | 中国科学院武汉岩土力学研究所 | Soil body tester based on soil body elasticity test and test method thereof |
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