CN206270187U - A kind of drag-line fatigue tester - Google Patents
A kind of drag-line fatigue tester Download PDFInfo
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- CN206270187U CN206270187U CN201621432052.7U CN201621432052U CN206270187U CN 206270187 U CN206270187 U CN 206270187U CN 201621432052 U CN201621432052 U CN 201621432052U CN 206270187 U CN206270187 U CN 206270187U
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- 238000012360 testing method Methods 0.000 claims abstract description 45
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 37
- 239000010959 steel Substances 0.000 claims abstract description 37
- 238000009661 fatigue test Methods 0.000 claims abstract description 24
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 9
- 238000004873 anchoring Methods 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 239000004567 concrete Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
本实用新型提供了一种拉索疲劳试验机，属于试验机领域，主要用于拉索结构的疲劳试验。拉索疲劳试验机包括结构系统、动力系统、测量与控制系统等各系统。结构系统包括钢筋混凝土框架、张拉端钢梁、锚固端钢梁、连接钢梁、连接件；动力系统包括两台作动器；测量与控制系统包括力传感器，位移传感器，测量及控制器。这种试验机既能进行单根大型拉索的大吨位疲劳试验，又可开展两根小型拉索的疲劳试验。这两根小型拉索的疲劳试验可同时进行而互不影响，从而提高了试验效率。
The utility model provides a cable fatigue testing machine, which belongs to the field of testing machines and is mainly used for fatigue testing of cable structures. Cable fatigue testing machine includes structural system, power system, measurement and control system and other systems. The structural system includes reinforced concrete frame, steel beam at tension end, steel beam at anchor end, connecting steel beam, and connectors; the dynamic system includes two actuators; the measurement and control system includes force sensor, displacement sensor, measurement and controller. This testing machine can not only carry out the large-tonnage fatigue test of a single large cable, but also carry out the fatigue test of two small cables. The fatigue tests of the two small cables can be carried out simultaneously without affecting each other, thereby improving the test efficiency.
Description
技术领域technical field
本实用新型属于试验机领域，特别涉及到拉索试验机。The utility model belongs to the field of testing machines, in particular to a cable testing machine.
背景技术Background technique
拉索作为斜拉桥的重要受力部件之一，在复杂的荷载因素和外部环境作用下，必须具有良好的抗疲劳性能。拉索疲劳试验是研究拉索疲劳性能的主要手段，而拉索疲劳试验机是拉索疲劳试验的主要工具。目前国内已有的拉索疲劳试验机大多为立式、小吨位试验机，且其功能较为单一，只能进行单根拉索的疲劳试验操作。随着桥梁领域的不断开拓，试验工作量在不断增大，工程问题正日趋复杂，需要一种卧式、大吨位、多等级试验机来提供解决办法。As one of the important stress-bearing components of cable-stayed bridges, cables must have good fatigue resistance under complex load factors and external environments. The cable fatigue test is the main method to study the fatigue performance of the cable, and the cable fatigue testing machine is the main tool for the cable fatigue test. At present, most of the cable fatigue testing machines in China are vertical and small-tonnage testing machines, and their functions are relatively single, and they can only perform the fatigue test operation of a single cable. With the continuous development of the bridge field, the test workload is increasing, and the engineering problems are becoming more and more complex. A horizontal, large-tonnage, and multi-level testing machine is needed to provide a solution.
实用新型内容Utility model content
本实用新型提供了一种卧式大吨位多级拉索疲劳试验机，这种试验机既能进行单根大型拉索试件的大吨位疲劳试验，又可开展两根小型拉索试件的疲劳试验。对于两根小型拉索的试验可同时进行而互不影响。The utility model provides a horizontal large-tonnage multi-stage cable fatigue testing machine, which can not only carry out the large-tonnage fatigue test of a single large-sized cable test piece, but also carry out the test of two small-sized cable test pieces. stress test. The tests for two small cables can be carried out simultaneously without affecting each other.
本实用新型的技术方案：Technical scheme of the utility model:
一种拉索疲劳试验机，包括结构系统、动力系统、测量与控制系统；A cable fatigue testing machine, including a structural system, a dynamic system, a measurement and control system;
结构系统包括钢筋混凝土框架1、张拉端钢梁2、锚固端钢梁3、连接钢梁5和连接件9；The structural system includes reinforced concrete frame 1, tension end steel beam 2, anchor end steel beam 3, connecting steel beam 5 and connector 9;
动力系统包括两台作动器4；The power system includes two actuators 4;
测量与控制系统包括传感器11和测量及控制器12；The measurement and control system includes a sensor 11 and a measurement and controller 12;
钢筋混凝土框架1设置在拉索疲劳试验机的外围，张拉端钢梁2和锚固端钢梁3之间，保护和固定拉索疲劳试验机；两台作动器4一端连接于张拉端钢梁2，另一端通过连接钢梁5与一根大型拉索试件6连接，或另一端通过连接件9各自连接一根小型拉索试件10；大型拉索试件6利用大型拉索锚具8固定在张拉端钢梁2与锚固端钢梁3之间，小型拉索试件10利用小型拉索锚具7固定在张拉端钢梁2与锚固端钢梁3之间；传感器11设置在大型拉索试件6或小型拉索试件10上，给大型拉索试件6或小型拉索试件10以恒定的拉力，通过传感器11将大型拉索试件6或小型拉索试件10的实际受力信息传达到测量及控制器12，再由测量及控制器12控制和调整作动器4给大型拉索试件6或小型拉索试件10以应力幅。The reinforced concrete frame 1 is set on the periphery of the cable fatigue testing machine, between the steel beam 2 at the tension end and the steel beam 3 at the anchoring end, to protect and fix the cable fatigue testing machine; one end of two actuators 4 is connected to the tension end The other end of the steel beam 2 is connected to a large cable test piece 6 through a connecting steel beam 5, or the other end is connected to a small cable sample 10 through a connecting piece 9; the large cable test piece 6 uses a large cable The anchorage 8 is fixed between the steel beam 2 at the tension end and the steel beam 3 at the anchorage end, and the small cable test piece 10 is fixed between the steel beam 2 at the tension end and the steel beam 3 at the anchorage end with the small cable anchorage 7; The sensor 11 is arranged on the large cable test piece 6 or the small cable test piece 10, and the large cable test piece 6 or the small cable test piece 10 is given a constant pulling force, and the large cable test piece 6 or the small cable sample is pulled by the sensor 11. The actual force information of the cable test piece 10 is transmitted to the measurement and controller 12, and then the measurement and controller 12 controls and adjusts the actuator 4 to give the large cable test piece 6 or the small cable test piece 10 a stress amplitude.
本实用新型的效果和益处是：使用这种拉索疲劳试验机，可以进行单根大型拉索的大吨位疲劳试验，又可在置换连接装置后对两根小型拉索同时开展疲劳试验，提高了试验效率。The effects and benefits of the utility model are: using this cable fatigue testing machine, the large-tonnage fatigue test of a single large cable can be carried out, and the fatigue test can be carried out on two small cables at the same time after the connection device is replaced, which improves the test efficiency.
附图说明Description of drawings
图1是单根拉索试验装置图。Figure 1 is a diagram of a single cable test device.
图2是两根拉索试验装置图。Figure 2 is a diagram of the two-cable test setup.
图中：1钢筋混凝土框架；2张拉端钢梁；3锚固端钢梁；4作动器；In the figure: 1 reinforced concrete frame; 2 tension end steel beams; 3 anchor end steel beams; 4 actuators;
5连接钢梁；6大型拉索试件；7小型拉索锚具；8大型拉索锚具；5 Connecting steel beams; 6 Large cable test pieces; 7 Small cable anchors; 8 Large cable anchors;
9连接件；10小型拉索试件；11传感器；12测量及控制器。9 connectors; 10 small cable test pieces; 11 sensors; 12 measurement and controller.
具体实施方式detailed description
以下结合技术方案和附图详细叙述本实用新型的具体实施方式。The specific embodiment of the utility model is described in detail below in conjunction with technical scheme and accompanying drawing.
钢筋混凝土框架1包括两片长12m×高1.4m×厚0.75m、中心间距为3.0m的混凝土构件，两片构件由C50混凝土、HRB400钢筋制成。钢筋混凝土框架1要求在承受巨大的压力下不会产生大变形乃至失稳现象。张拉端钢梁2、锚固端钢梁2、连接钢梁5、连接件9等构件由Q345钢制成，要求在较大的偏心压力作用下不能有过大挠曲变形乃至破坏。张拉端钢梁2、锚固端钢梁3须与钢筋混凝土框架1、地基基础牢固联结，不可有位移。Reinforced concrete frame 1 includes two concrete components with a length of 12m x a height of 1.4m x a thickness of 0.75m and a distance between centers of 3.0m. The two components are made of C50 concrete and HRB400 steel bars. Reinforced concrete frame 1 requires no large deformation or even instability under huge pressure. Tension end steel beam 2, anchor end steel beam 2, connecting steel beam 5, connector 9 and other components are made of Q345 steel, and it is required that there should be no excessive deflection deformation or even damage under the action of large eccentric pressure. The steel beam 2 at the tension end and the steel beam 3 at the anchorage end must be firmly connected with the reinforced concrete frame 1 and the foundation foundation without displacement.
作动器4为两台2500kN微机控制电液伺服作动器。The actuator 4 is an electro-hydraulic servo actuator controlled by two 2500kN microcomputers.
测量与控制系统有力传感器、位移传感器和测量及控制器12，测量及控制器主要元件装于测量控制操作台的控制柜中，控制操作台上设有显示屏、操作按钮等。本机所用电气附件、液压附件均为成品件，连接、固定用的螺栓、螺母为标准件。The measurement and control system has a force sensor, a displacement sensor, and a measurement and controller 12. The main components of the measurement and controller are installed in the control cabinet of the measurement control console, and the control console is provided with a display screen and operation buttons. The electrical accessories and hydraulic accessories used in this machine are all finished parts, and the bolts and nuts used for connection and fixing are standard parts.
两台作动器4通过连接钢梁5与一根649丝的大型拉索试件6连接进行试验，对应规格型号为LMLPES7-649的大型拉索锚具冷铸镦头锚，首先通过静力千斤顶施加15031kN的张拉力，其次作动器4施加±2652kN的循环脉冲荷载。The two actuators 4 connect the steel beam 5 with a 649 wire The large-scale cable specimen 6 is connected for the test, corresponding to the large-scale cable anchorage cold-cast heading anchor with the specification model LMLPES7-649. First, a tension force of 15031kN is applied through a static jack, and secondly, a force of ±2652kN is applied by the actuator 4. Cyclic impulse loading.
待大型拉索试件6的疲劳试验完成后，用起重机将大型拉索试件6和连接钢梁5置换为小型拉索试件10和连接件9，两台电液伺服试验机通过连接件9分别连接一根139丝及151丝的小型拉索试件10进行试验，对应LMLPES7-139及LMLPES7-151的锚具，千斤顶施加预拉力分别为3219kN及3497kN，作动器4施加脉冲荷载分别为±568kN及±617kN，完成对小型拉索试件10的试验。After the fatigue test of the large cable specimen 6 is completed, use a crane to replace the large cable specimen 6 and the connecting steel beam 5 with the small cable specimen 10 and the connecting piece 9, and two electro-hydraulic servo testing machines pass through the connecting piece 9 Connect a 139 wire respectively and 151 silk The test is carried out on the small cable specimen 10 of the LMLPES7-139 and LMLPES7-151 anchorages. The pretension force applied by the jack is 3219kN and 3497kN respectively, and the pulse load applied by the actuator 4 is respectively ±568kN and ±617kN. Test of cable specimen 10.
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| CN201621432052.7U CN206270187U (en) | 2016-12-23 | 2016-12-23 | A kind of drag-line fatigue tester |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769564A (en) * | 2016-12-23 | 2017-05-31 | 大连理工大学 | A kind of drag-line fatigue tester |
| CN107655755A (en) * | 2017-07-25 | 2018-02-02 | 东南大学 | A kind of test method of drag-line cord clip assembly resistant slide bearing capacity |
| CN113218687A (en) * | 2021-04-29 | 2021-08-06 | 西南交通大学 | Cable-stayed bridge cable-beam anchoring structure reduced scale test model loading device and test method thereof |
| CN114047071A (en) * | 2021-11-22 | 2022-02-15 | 中国船舶科学研究中心 | Parallel fatigue test device based on structure test platform |
-
2016
- 2016-12-23 CN CN201621432052.7U patent/CN206270187U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769564A (en) * | 2016-12-23 | 2017-05-31 | 大连理工大学 | A kind of drag-line fatigue tester |
| CN107655755A (en) * | 2017-07-25 | 2018-02-02 | 东南大学 | A kind of test method of drag-line cord clip assembly resistant slide bearing capacity |
| CN107655755B (en) * | 2017-07-25 | 2020-02-18 | 东南大学 | A test method for the anti-slip bearing capacity of a cable-clamp assembly |
| CN113218687A (en) * | 2021-04-29 | 2021-08-06 | 西南交通大学 | Cable-stayed bridge cable-beam anchoring structure reduced scale test model loading device and test method thereof |
| CN114047071A (en) * | 2021-11-22 | 2022-02-15 | 中国船舶科学研究中心 | Parallel fatigue test device based on structure test platform |
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