CN208187945U - A kind of loading device for bond-slip properties test - Google Patents
A kind of loading device for bond-slip properties test Download PDFInfo
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- CN208187945U CN208187945U CN201820864866.0U CN201820864866U CN208187945U CN 208187945 U CN208187945 U CN 208187945U CN 201820864866 U CN201820864866 U CN 201820864866U CN 208187945 U CN208187945 U CN 208187945U
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- 238000012360 testing method Methods 0.000 title claims abstract description 89
- 238000011068 loading method Methods 0.000 title claims abstract description 63
- 238000009434 installation Methods 0.000 claims abstract description 47
- 238000006073 displacement reaction Methods 0.000 claims description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 238000004080 punching Methods 0.000 claims 4
- 230000003447 ipsilateral effect Effects 0.000 claims 1
- 238000011056 performance test Methods 0.000 abstract description 15
- 238000005452 bending Methods 0.000 abstract description 10
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 35
- 239000010959 steel Substances 0.000 description 35
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 1
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Abstract
本实用新型公开了一种用于粘结滑移性能试验的加载装置，包括：加载框架；加载框架包括支腿、第一支撑板、第二支撑板和第三支撑板；第一支撑板、第二支撑板和第三支撑板依次固定设置在支腿上；第一支撑板、第二支撑板和第三支撑板上开设有同轴的安装通孔；第一支撑板上固定设置有穿心球铰，穿心球铰的中心孔与第一支撑板上的安装通孔同轴；第三支撑板的安装通孔内安装有带球铰的球铰连杆，通过球铰连杆能够与试验机的夹头相连接。本实用新型的用于粘结滑移性能试验的加载装置通过自对中能够进行弯矩释放，可提高粘结滑移性能试验的精确性。
The utility model discloses a loading device for adhesive slip performance test, comprising: a loading frame; the loading frame includes legs, a first support plate, a second support plate and a third support plate; the first support plate, The second support plate and the third support plate are fixedly arranged on the legs in turn; the first support plate, the second support plate and the third support plate are provided with coaxial installation through holes; the first support plate is fixedly provided with a through hole The center ball hinge, the central hole of the center ball hinge is coaxial with the installation through hole on the first support plate; the ball hinge connecting rod with a ball hinge is installed in the installation through hole of the third support plate, through which the ball hinge can Connect with the chuck of the testing machine. The loading device used for the bond-slip performance test of the utility model can perform bending moment release through self-centering, and can improve the accuracy of the bond-slip performance test.
Description
技术领域technical field
本实用新型属于土木工程技术领域或钢筋与混凝土粘结滑移性能试验研究技术领域，特别涉及一种用于粘结滑移性能试验的加载装置。The utility model belongs to the technical field of civil engineering or the technical field of bond-slip performance test research of steel bars and concrete, and particularly relates to a loading device for bond-slip performance test.
背景技术Background technique
钢筋与混凝土结构能够共同工作，可发挥各自材料的优势，关键是靠钢筋与混凝土之间的粘结作用，在实践中测量钢筋与混凝土的粘结力的方法一般采用《混凝土结构试验方法标准》中推荐使用的立方体中心拔出试件。Reinforcement and concrete structures can work together and give full play to the advantages of their respective materials. The key is to rely on the bond between the rebar and concrete. In practice, the method of measuring the bond between the rebar and concrete generally adopts the "Concrete Structure Test Method Standard" Cubic center pull-out specimens are recommended in .
对于现有的试验机夹具而言，往往需要通过试验加载装置来满足试验机夹持试件的要求，通常在混凝土中心埋入钢筋，在钢筋的一端施加荷载，来测量钢筋与混凝土粘结性能中的粘结应力和相对滑移。现有的试验加载装置普遍存在不能释放加载连接时产生的弯矩的问题，会导致粘结滑移性能试验精确性降低；且现有的加载装置大多通过加载装置的框架进行间接加载，间接加载的中间损耗会降低加载精度。For the existing testing machine fixtures, it is often necessary to use a test loading device to meet the requirements of the testing machine to clamp the specimen. Usually, a steel bar is embedded in the center of the concrete, and a load is applied to one end of the steel bar to measure the bond between the steel bar and the concrete. Bond stress and relative slip in . The existing test loading devices generally have the problem of not being able to release the bending moment generated during the loading connection, which will lead to a decrease in the accuracy of the bond-slip performance test; and most of the existing loading devices perform indirect loading through the frame of the loading device, and the indirect loading The intermediate loss will reduce the loading accuracy.
实用新型内容Utility model content
本实用新型的目的在于提供一种用于粘结滑移性能试验的加载装置，以解决上述存在的技术问题。本实用新型的用于粘结滑移性能试验的加载装置通过自对中能够进行弯矩释放，可提高粘结滑移性能试验的精确性。The purpose of the utility model is to provide a loading device for the bond-slip performance test, so as to solve the above-mentioned existing technical problems. The loading device used for the bond-slip performance test of the utility model can perform bending moment release through self-centering, and can improve the accuracy of the bond-slip performance test.
为达到上述目的，本实用新型采用以下技术方案：In order to achieve the above object, the utility model adopts the following technical solutions:
一种用于粘结滑移性能试验的加载装置，包括：加载框架；加载框架包括支腿、第一支撑板、第二支撑板和第三支撑板；第一支撑板、第二支撑板和第三支撑板依次固定设置在支腿上；第一支撑板、第二支撑板和第三支撑板上开设有同轴的安装通孔；第一支撑板上固定设置有穿心球铰，穿心球铰的中心孔与第一支撑板上的安装通孔同轴，穿心球铰位于第一支撑板和第二支撑板之间，试件上端的钢筋能够穿过穿心球铰的中心孔进入第一支撑板上的安装通孔，试件下端的钢筋能够进入第二支撑板的安装通孔；第三支撑板的安装通孔内安装有带球铰的球铰连杆，通过球铰连杆能够与试验机的夹头相连接。A loading device for bond-slip performance test, comprising: a loading frame; the loading frame includes legs, a first support plate, a second support plate and a third support plate; the first support plate, the second support plate and The third support plate is fixedly arranged on the legs in turn; the first support plate, the second support plate and the third support plate are provided with coaxial installation through holes; The central hole of the central spherical hinge is coaxial with the installation through hole on the first support plate, the through-center spherical hinge is located between the first support plate and the second support plate, and the steel bar at the upper end of the specimen can pass through the center of the through-center spherical hinge The hole enters the installation through hole on the first support plate, and the steel bar at the lower end of the specimen can enter the installation through hole of the second support plate; The hinge rod can be connected with the chuck of the testing machine.
进一步的，穿心球铰的下端设置有限位螺栓，限位螺栓用于对试件的混凝土进行周向限位。Further, the lower end of the through-center spherical hinge is provided with limit bolts, and the limit bolts are used to limit the concrete of the test piece in the circumferential direction.
进一步的，第三支撑板的安装通孔处设置有局部加强板。Further, a local reinforcement plate is provided at the installation through hole of the third support plate.
进一步的，第一支撑板和第二支撑板的同侧分别设置有豁口，豁口分别通过第一支撑板和第二支撑板上的安装通孔。Further, notches are respectively provided on the same side of the first support plate and the second support plate, and the notches respectively pass through the installation through holes on the first support plate and the second support plate.
进一步的，支腿包括4个螺杆；4个螺杆通过螺母和垫片分别与第一支撑板、第二支撑板和第三支撑板连接。Further, the support leg includes 4 screw rods; the 4 screw rods are respectively connected to the first support plate, the second support plate and the third support plate through nuts and washers.
进一步的，穿心球铰的中心孔的下端安装有第一支架，第一支架上安装有第一位移计。Further, a first bracket is installed at the lower end of the central hole of the through-center spherical hinge, and a first displacement gauge is installed on the first bracket.
进一步的，第二支撑板的安装通孔处安装有第二支架，第二支架上安装有第二位移计。Further, a second bracket is installed at the installation through hole of the second support plate, and a second displacement gauge is installed on the second bracket.
进一步的，还包括试件和试验机；试件包括钢筋和混凝土，钢筋埋入混凝土中，钢筋的两端均伸出混凝土，钢筋的上端穿出穿心球铰的中心孔和第一支撑板的安装通孔与试验机的上部夹头固定连接，钢筋的下端伸入第二支撑板的安装通孔中，试验机的下部夹头与第三支撑板的球铰连杆固定连接。Further, it also includes a test piece and a testing machine; the test piece includes steel bars and concrete, the steel bars are embedded in the concrete, both ends of the steel bars protrude from the concrete, and the upper ends of the steel bars pass through the center hole of the through-center spherical hinge and the first support plate The installation through hole of the test machine is fixedly connected with the upper chuck of the testing machine, the lower end of the steel bar extends into the installation through hole of the second support plate, and the lower chuck of the testing machine is fixedly connected with the ball joint connecting rod of the third support plate.
与现有技术相比，本实用新型具有以下优点：Compared with the prior art, the utility model has the following advantages:
本实用新型的用于粘结滑移性能试验的加载装置，待加载试件放置在第一支撑板和第二支撑板之间，试件上端的钢筋伸入穿心球铰的中心孔并穿出第一支撑板的安装通孔，试件下端的钢筋伸入第二支撑板的安装通孔，第三支撑板的安装通孔内安装有球铰连杆，第一支撑板、第二支撑板和第三支撑板的安装通孔同轴对中，通过调节穿心球铰与球铰连杆能够使待加载试件的钢筋与试验机的夹头对中，能够释放由于偏心产生的弯矩，可提高加载的精确性，提高试验的精度和可靠性。而且本试验加载装置较传统的加载装置在试件受力上更直接，减少了试验机通过加载装置对试件施加荷载的损耗，使试件受力更直接。In the loading device used for bonding-slip performance test of the utility model, the test piece to be loaded is placed between the first support plate and the second support plate, and the steel bar at the upper end of the test piece extends into the center hole of the through-center spherical hinge and passes through out of the installation through hole of the first support plate, the steel bar at the lower end of the specimen extends into the installation through hole of the second support plate, and a ball joint connecting rod is installed in the installation through hole of the third support plate, the first support plate, the second support plate The installation through holes of the plate and the third support plate are coaxially centered, and the steel bar to be loaded can be aligned with the chuck of the testing machine by adjusting the through-center spherical hinge and the spherical hinge connecting rod, and the bending caused by eccentricity can be released. Moment can improve the accuracy of loading and improve the accuracy and reliability of the test. Moreover, compared with the traditional loading device, the test loading device is more direct in the force bearing of the test piece, which reduces the loss of the test machine applying the load to the test piece through the loading device, and makes the test piece bear the force more directly.
进一步的，通过限位螺栓可以有效调节对中，防止由于试件偏心在加载时产生附加弯矩。Furthermore, the centering can be effectively adjusted through the limit bolts to prevent additional bending moments during loading due to the eccentricity of the specimen.
进一步的，通过在第三支撑板的安装通孔处设置局部加强板，可增强安装通孔处的强度，避免第三支撑板在加载中变形影响试件的钢筋与试验机夹头的对中性，进一步保证加载的精确性。Further, by arranging a local reinforcement plate at the installation through hole of the third support plate, the strength at the installation through hole can be enhanced, and the deformation of the third support plate during loading will not affect the centering of the steel bar of the test piece and the chuck of the testing machine To further ensure the accuracy of loading.
进一步的，第一支撑板、穿心球铰和第二支撑板的同侧均开有豁口，通过豁口能够较方便地将试件放入加载装置，便于安装，可提高加载效率。Furthermore, there are notches on the same side of the first support plate, the through-center spherical hinge and the second support plate, through which the test piece can be put into the loading device more conveniently, which is convenient for installation and can improve the loading efficiency.
进一步的，支腿采用螺杆，每个支撑板上均开始有螺纹连接孔，螺杆通过螺母和垫片与螺纹连接孔相连接，便于安装，也便于根据实际需要调节各个支撑板之间的距离，可提高加载装置的适用范围。Further, the legs use screw rods, and each support plate has threaded connection holes, and the screw rods are connected to the threaded connection holes through nuts and washers, which is convenient for installation and easy to adjust the distance between each support plate according to actual needs. The application range of the loading device can be improved.
进一步的，第一位移计用于测量加载端钢筋与混凝土之间的相对位移。Further, the first displacement meter is used to measure the relative displacement between the steel bar at the loading end and the concrete.
进一步的，第二位移计用于测量自由端钢筋与混凝土之间的相对位移。Further, the second displacement meter is used to measure the relative displacement between the steel bar at the free end and the concrete.
附图说明Description of drawings
图1是本实用新型的一种用于粘结滑移性能试验的加载装置的整体结构示意图；Fig. 1 is a kind of overall structure schematic diagram of the loading device that is used for bond-slip performance test of the present utility model;
图2是图1的俯视结构示意图；Fig. 2 is a top view structural schematic diagram of Fig. 1;
图3是图1中的第一支撑板的俯视结构示意图；Fig. 3 is a top structural schematic view of the first support plate in Fig. 1;
图4是图1中的穿心球铰的正视结构示意图；Fig. 4 is a schematic diagram of the front structure of the through-center spherical hinge in Fig. 1;
图5是图4的俯视结构示意图；Fig. 5 is a top view structural schematic diagram of Fig. 4;
图6是图1中的第二支撑板的俯视结构示意图；Fig. 6 is a schematic top view of the second support plate in Fig. 1;
图7是图1中的局部加强板的正视结构示意图；Fig. 7 is a schematic diagram of the front view of the partial reinforcing plate in Fig. 1;
图8是图7的俯视结构示意图；Fig. 8 is a top view structural schematic diagram of Fig. 7;
图9是图1中的第三支撑板的俯视结构示意图；Fig. 9 is a schematic top view of the third support plate in Fig. 1;
图10是图1中球铰连杆的正视结构示意图；Fig. 10 is a schematic diagram of the front structure of the ball joint connecting rod in Fig. 1;
图11是图10的俯视结构示意图；Fig. 11 is a top view structural schematic diagram of Fig. 10;
图12是球铰连杆、局部加强板和第三支撑板连接的爆炸结构示意图；Fig. 12 is a schematic diagram of the exploded structure connecting the spherical joint connecting rod, the local reinforcement plate and the third support plate;
图1至图12中，1—钢筋、2—螺杆、3—螺母、4—第一支撑板、5—连接螺栓、6—穿心球铰、7—限位螺栓、8—第一位移计、9—混凝土试块、10—第二支撑板、11—第二位移计、12—局部加强板、13—第三支撑板、14—球铰连杆。In Fig. 1 to Fig. 12, 1—steel bar, 2—screw, 3—nut, 4—the first support plate, 5—connecting bolt, 6—piercing spherical hinge, 7—limiting bolt, 8—the first displacement gauge , 9—concrete test block, 10—second support plate, 11—second displacement gauge, 12—local reinforcement plate, 13—third support plate, 14—spherical joint connecting rod.
具体实施方式Detailed ways
下面结合附图和具体实施例对本实用新型作进一步详细说明。Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.
参考图1至图12，本实用新型的一种用于粘结滑移性能试验的加载装置，包括：加载框架、试件和试验机。Referring to Fig. 1 to Fig. 12, a loading device for bond-slip performance test of the present invention includes: a loading frame, a test piece and a testing machine.
加载框架包括支腿、第一支撑板4、第二支撑板10和第三支撑板13，第一支撑板4、第二支撑板10和第三支撑板13依次固定设置在支腿上；支腿为4根螺杆2，三个支撑板均为矩形钢板，三个支撑板的四角附近分别对应开设有同轴的螺纹安装孔，螺杆2分别安装在螺纹安装孔内并通过螺母3和垫片进行固定连接，采用螺杆2作为支腿便于根据试件的长度调节第一支撑板4和第二支撑板10之间的间距，便于操作，有助于提高加载装置的适用范围。第一支撑板4、第二支撑板10和第三支撑板13上开设有同轴的安装通孔；第一支撑板4的安装通孔处固定设置有穿心球铰6，穿心球铰6的中心孔与第一支撑板4上的安装通孔同轴，穿心球铰6位于第一支撑板4和第二支撑板10之间，通过穿心球铰6释放由于偏心产生的弯矩；具体为穿心球铰6上部通过连接螺栓5与第一支撑板4连接，下部穿过钢筋1，钢筋1一直通出穿心球铰6的上部，钢筋1穿过凸凹面中心；当钢筋1与试验机的上部夹头相连，连接线非平行于钢筋1轴线时，通过穿心球铰6可以调节试件的钢筋1发生微小转动，穿心球铰6可以起到试件调节对中的作用，能够释放偏心产生的弯矩，提高加载精度。试件上端的钢筋1能够穿过穿心球铰6的中心孔进入第一支撑板4上的安装通孔，试件下端的钢筋1能够进入第二支撑板10的安装通孔，试件的混凝土试块9的底部搁置在第二支撑板10上，第二支撑板10搁置钢筋1混凝土粘结试件；穿心球铰6的下端设置有限位螺栓7，限位螺栓7用于对混凝土试块9进行周向限位，防止在加载过程中混凝土试块9发生周向移动。第一支撑板4和第二支撑板10的同侧分别设置有豁口，豁口分别通过第一支撑板4和第二支撑板10上的安装通孔，试件的钢筋1可以从豁口处直接放入，便于试件的放置。穿心球铰6的中心孔的下端与试件接触处安装有第一支架，第一支架上安装有第一位移计8。第二支撑板10的安装通孔处安装有第二支架，第二支架上安装有第二位移计11。在穿心球铰6和第二支撑板10的安装通孔处安装位移计，可测量自由端与加载端的相对滑移，安装方便，试件方便操作。The loading frame comprises legs, a first support plate 4, a second support plate 10 and a third support plate 13, and the first support plate 4, the second support plate 10 and the third support plate 13 are fixedly arranged on the legs in sequence; The legs are four screw rods 2, and the three support plates are all rectangular steel plates. There are corresponding coaxial threaded mounting holes near the four corners of the three support plates. For fixed connection, the screw rod 2 is used as the leg to adjust the distance between the first support plate 4 and the second support plate 10 according to the length of the test piece, which is convenient for operation and helps to improve the scope of application of the loading device. The first support plate 4, the second support plate 10 and the third support plate 13 are provided with coaxial installation through holes; the installation through holes of the first support plate 4 are fixedly provided with through-center spherical hinges 6, The center hole of 6 is coaxial with the installation through hole on the first support plate 4, and the through-center ball hinge 6 is located between the first support plate 4 and the second support plate 10, through which the through-center ball hinge 6 releases the bending caused by eccentricity. Moment; specifically, the upper part of the through-center spherical hinge 6 is connected with the first support plate 4 through the connecting bolt 5, and the lower part passes through the reinforcing bar 1, and the reinforcing bar 1 passes through the upper part of the through-center spherical hinge 6, and the reinforcing bar 1 passes through the center of the convex-concave surface; The steel bar 1 is connected with the upper chuck of the testing machine. When the connection line is not parallel to the axis of the steel bar 1, the steel bar 1 of the test piece can be adjusted to rotate slightly through the through-center spherical hinge 6, and the through-center spherical hinge 6 can play a role in adjusting the test piece. The role in the center can release the bending moment generated by eccentricity and improve the loading accuracy. The steel bar 1 at the upper end of the test piece can pass through the central hole of the ball hinge 6 and enter the installation through hole on the first support plate 4, and the steel bar 1 at the lower end of the test piece can enter the installation through hole of the second support plate 10. The bottom of the concrete test block 9 rests on the second support plate 10, and the second support plate 10 places the steel bar 1 concrete bonding test piece; The test block 9 is limited in the circumferential direction to prevent the concrete test block 9 from moving in the circumferential direction during the loading process. The same sides of the first support plate 4 and the second support plate 10 are respectively provided with gaps, and the gaps pass through the installation through holes on the first support plate 4 and the second support plate 10 respectively, and the steel bars 1 of the test piece can be directly placed from the gaps. In, easy to place the test piece. The lower end of the central hole of the through-center spherical hinge 6 is in contact with the test piece with a first support on which a first displacement meter 8 is installed. A second bracket is installed at the installation through hole of the second support plate 10 , and a second displacement gauge 11 is installed on the second bracket. Displacement gauges are installed at the installation through holes of the through-center spherical hinge 6 and the second support plate 10 to measure the relative slippage between the free end and the loading end. The installation is convenient and the test piece is convenient to operate.
第三支撑板13的安装通孔内安装有带球铰的球铰连杆14，通过球铰连杆14能够与试验机的夹头相连接，球铰连杆14与第三支撑板13的安装通孔之间可以发生微小转动，如果球铰连杆14与试验机夹头非平行，将球铰和球铰连杆14与第三支撑板13的安装通孔之间进行微小转动就可以释放非对中在加载机具上所产生的弯矩，球铰连杆14可起到调节对中释放弯矩的作用。第三支撑板13的安装通孔处设置有局部加强板12，局部加强板12能够加强第三支撑板13的安装通孔处的强度，避免第三支撑板13在加载过程中发生变形。The ball hinge connecting rod 14 with ball joint is installed in the installation through hole of the 3rd support plate 13, can be connected with the chuck of testing machine by ball hinge connecting rod 14, the ball hinge connecting rod 14 and the 3rd support plate 13 A slight rotation can take place between the installation through holes. If the ball hinge connecting rod 14 is not parallel to the chuck of the testing machine, a slight rotation between the ball hinge and the ball hinge connecting rod 14 and the installation through hole of the third support plate 13 is sufficient. To release the bending moment generated by non-centering on the loading tool, the ball joint link 14 can play the role of adjusting the centering release bending moment. The installation through hole of the third support plate 13 is provided with a local reinforcing plate 12, which can strengthen the strength of the installation through hole of the third support plate 13 and prevent the third support plate 13 from being deformed during the loading process.
试件包括钢筋1和混凝土试块9，钢筋1埋入混凝土试块9中，钢筋1的两端均伸出混凝土试块9，钢筋1的上端穿出穿心球铰6的中心孔和第一支撑板4的安装通孔与试验机的上部夹头固定连接，钢筋1的下端伸入第二支撑板10的安装通孔中，试验机的下部夹头与第三支撑板13的球铰连杆14固定连接。The test piece includes a steel bar 1 and a concrete test block 9. The steel bar 1 is embedded in the concrete test block 9. Both ends of the steel bar 1 extend out of the concrete test block 9. The upper end of the steel bar 1 passes through the center hole of the through-center spherical hinge 6 and the second The installation through hole of a support plate 4 is fixedly connected with the upper chuck of the testing machine, the lower end of the steel bar 1 extends into the installation through hole of the second support plate 10, and the lower chuck of the testing machine is connected with the spherical hinge of the third support plate 13. The connecting rod 14 is fixedly connected.
一种用于粘结滑移性能试验的加载方法，基于上述的加载装置，包括以下具体步骤：A loading method for bond-slip performance test, based on the above-mentioned loading device, comprising the following specific steps:
步骤1，将三块支撑板与螺杆2通过螺母3及垫片有效连接成加载框架，穿心球铰6上部与第一支撑板4通过连接螺栓5相连；Step 1, the three supporting plates are effectively connected with the screw rod 2 through nuts 3 and gaskets to form a loading frame, and the upper part of the through-center spherical hinge 6 is connected with the first supporting plate 4 through connecting bolts 5;
步骤2，将待加载试件放置在第一支撑板4和第二支撑板10之间，试件上端的钢筋1伸入穿心球铰6的中心孔并穿出第一支撑板4的安装通孔与试验机的上部夹头连接，试件下端的钢筋1伸入第二支撑板10的安装孔；Step 2, the test piece to be loaded is placed between the first support plate 4 and the second support plate 10, the steel bar 1 at the upper end of the test piece extends into the center hole of the ball hinge 6 and passes through the installation of the first support plate 4 The through hole is connected with the upper chuck of the testing machine, and the steel bar 1 at the lower end of the test piece extends into the mounting hole of the second support plate 10;
步骤3，将第三支撑板13上安装的球铰连杆14与试验机的下部夹头连接；Step 3, connecting the ball joint connecting rod 14 installed on the third support plate 13 with the lower chuck of the testing machine;
步骤4，调节穿心球铰6和球铰连杆14使试件的钢筋1与试验机的上部夹头及下部夹头对中，避免产生偏心；Step 4, adjust the through-center spherical hinge 6 and the spherical hinge connecting rod 14 so that the steel bar 1 of the test piece is aligned with the upper chuck and the lower chuck of the testing machine to avoid eccentricity;
步骤5，在穿心球铰6与试件的混凝土试块9之间安装第一位移计8，在第二支撑板10与试件的混凝土试块9之间安装第二位移计11，并调整相应的位置直到满足试验测定的要求；Step 5, install the first displacement meter 8 between the through-center spherical hinge 6 and the concrete test block 9 of the test piece, install the second displacement meter 11 between the second support plate 10 and the concrete test block 9 of the test piece, and Adjust the corresponding position until it meets the requirements of the test measurement;
步骤6，启动试验机，进行加载，包括将试验机荷载归零，消除加载装置、试件及位移计等装置的重量影响。Step 6, start the testing machine, and carry out loading, including zeroing the load of the testing machine, and eliminating the weight influence of the loading device, the test piece, the displacement meter and other devices.
步骤7，加载过程按照规范要求进行粘结滑移试验。Step 7, during the loading process, carry out the bond-slip test according to the specification requirements.
本实用新型的加载方法可用于粘结滑移性能试验的加载，操作便捷，加载效率高，应用本实用新型的加载装置的加载方法能够确保试件钢筋与试验机夹头有较高的对中性，可释放偏心产生的弯矩，加载精确性较高。The loading method of the utility model can be used for the loading of the bond-slip performance test, and the operation is convenient and the loading efficiency is high. The loading method of the loading device of the utility model can ensure a relatively high centering between the steel bar of the test piece and the chuck of the testing machine It can release the bending moment generated by eccentricity, and the loading accuracy is high.
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