CN207944351U - A kind of bridge cable Suo Li temperature compensator mounting devices - Google Patents
A kind of bridge cable Suo Li temperature compensator mounting devices Download PDFInfo
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- 238000009434 installation Methods 0.000 claims abstract description 43
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Abstract
本实用新型属于土木工程的结构健康监测技术领域，涉及一种桥梁缆索索力温度补偿器安装装置，主要由拉索锚固夹具1、伸缩杆13、天线支撑杆16和GPS信号接收机天线17组成。该装置可以与斜拉桥拉索端部进行稳固的固定；可以控制并固定GPS信号接收机天线与拉索的相对距离；可以调整GPS型号接收机的方向以便适合在索塔锚固端拉索间距较小的情况下安装；可以自由调整传感器固定和活动安装底座之间的距离，以便适应不同型号温度传感器的安装；该装置为工程技术人员在斜拉桥拉索端部安装相对索力温度补偿监测传感器，进而研究斜拉桥服役过程中斜拉索索力变化规律提供了有力的工具。
The utility model belongs to the technical field of structural health monitoring of civil engineering, and relates to a bridge cable force temperature compensator installation device, which is mainly composed of a cable anchor clamp 1, a telescopic rod 13, an antenna support rod 16 and a GPS signal receiver antenna 17 . The device can be firmly fixed to the cable end of the cable-stayed bridge; it can control and fix the relative distance between the antenna of the GPS signal receiver and the cable; It can be installed in a small case; the distance between the fixed sensor and the movable installation base can be adjusted freely, so as to adapt to the installation of different types of temperature sensors; this device is for engineers and technicians to install relative cable force temperature compensation at the end of the cable-stayed bridge Monitoring sensors provide a powerful tool to study the change law of cable force during the service of cable-stayed bridges.
Description
技术领域technical field
本实用新型属于土木工程的结构健康监测技术领域，涉及一种桥梁缆索索力温度补偿器安装装置。The utility model belongs to the technical field of structural health monitoring of civil engineering, and relates to a bridge cable force temperature compensator installation device.
背景技术Background technique
随着近年来我国交通领域基础设施的不断发展，大跨度桥梁结构体系在公路和铁路沿线的应用日益广泛，包括斜拉桥、悬索桥等在内的多种大跨索承桥梁结构体系已经成为交通线、网上的控制性工程。大型桥梁结构作为社会的生命线工程，设计使用寿命往往达到一百年甚至更长。在桥梁结构的整个寿命期内，不断受到交通荷载、环境作用的持续影响，可能会出现影响结构正常使用的性能劣化和结构损伤，更严重的甚至会导致结构发生承载力失效的不利情况。斜拉桥作为一种跨越能力较强的桥梁结构形式，近年来在我国公路和铁路工程中得到了广泛的应用。斜拉桥的主要构件包括索塔、主梁、拉索和桥墩。其中主梁截面建筑高度要明显小于普通的梁式桥主梁，梁体内弯矩较小，其整体竖向抗弯承载力主要由锚固在桥塔上的斜拉索的竖向分力提供。因此，斜拉桥可以看作是拉索代替桥墩的多跨弹性支承连续梁。斜拉桥相比于普通的梁式桥，具有自重轻、跨越能力大的优点，目前已成为大跨桥梁工程的主力桥型。拉索作为斜拉桥的主要承重构件，其在桥梁结构施工、使用的整个寿命期内的工作性能受到工程人员的关注。为了能够对斜拉桥服役过程中拉索的力学性能进行监测，结构健康监测系统被越来越多的应用到大跨斜拉桥中。目前，结构健康监测系统中针对斜拉桥拉索的监测项目主要包括斜拉索振动加速度、斜拉索绝对索力等。With the continuous development of my country's transportation infrastructure in recent years, the application of long-span bridge structure systems along highways and railways has become increasingly widespread. Various long-span cable-supported bridge structures, including cable-stayed bridges and suspension Online and online control engineering. As the lifeline project of society, large bridge structures often have a designed service life of one hundred years or even longer. During the entire life span of the bridge structure, it is continuously affected by traffic loads and environmental effects, which may cause performance degradation and structural damage that affect the normal use of the structure, and more seriously even lead to unfavorable situations of failure of the structure's bearing capacity. Cable-stayed bridge, as a bridge structure with strong spanning capacity, has been widely used in highway and railway engineering in my country in recent years. The main components of a cable-stayed bridge include towers, girders, cables and piers. Among them, the building height of the main girder section is significantly smaller than that of ordinary girder bridges, and the bending moment in the girder body is small. The overall vertical flexural bearing capacity is mainly provided by the vertical component force of the stay cables anchored on the bridge tower. Therefore, the cable-stayed bridge can be regarded as a multi-span elastically supported continuous beam with cables instead of piers. Compared with ordinary beam bridges, cable-stayed bridges have the advantages of light weight and large spanning capacity, and have become the main bridge type of long-span bridge engineering. As the main load-bearing component of the cable-stayed bridge, the cable-stayed bridge's working performance during the construction and use of the bridge structure has attracted the attention of engineers. In order to monitor the mechanical properties of cables during the service of cable-stayed bridges, structural health monitoring systems are increasingly applied to long-span cable-stayed bridges. At present, the monitoring items of the cable-stayed bridge cables in the structural health monitoring system mainly include the vibration acceleration of the cable-stayed cables and the absolute cable force of the cable-stayed cables.
斜拉索索力除了受到结构自重及交通荷载影响外，还会受到温度作用的影响。大跨斜拉桥拉索长度较大，温度作用引起的热胀冷缩效应对索力的影响明显。目前拉索绝对索力的监测方法主要包括振动法和磁通量方法。但索力识别结果具误差大，可信度较差、需要事先标定等缺点，不适用于既有桥梁结构的索力监测。相比于绝对索力，相对索力同样可以反映拉索受力状态的变化。然而需要重点解决的问题是如何对相对索力温度补偿传感器与拉索端部进行有效固定，同时保证温度传感器和位移传感器的协同工作。拉索相对索力温度补偿传感器的安装装置成为了实现相对索力监测的重要保障。In addition to being affected by the structure's own weight and traffic load, the cable force of the cable stay is also affected by the temperature effect. The cables of long-span cable-stayed bridges are relatively long, and the effect of thermal expansion and contraction caused by temperature has a significant impact on the cable force. At present, the monitoring methods of the absolute cable force of the cable mainly include the vibration method and the magnetic flux method. However, the cable force identification results have the disadvantages of large errors, poor reliability, and the need for prior calibration, so they are not suitable for cable force monitoring of existing bridge structures. Compared with the absolute cable force, the relative cable force can also reflect the change of the force state of the cable. However, the problem that needs to be solved is how to effectively fix the relative cable force temperature compensation sensor and the end of the cable, and at the same time ensure the cooperative work of the temperature sensor and the displacement sensor. The installation device of the cable relative cable force temperature compensation sensor has become an important guarantee to realize the relative cable force monitoring.
因此，开发一种桥梁缆索索力温度补偿器安装装置，不仅能够确保相对索力传感器与拉索端部进行有效的连接固定，而且还可以为GPS位移传感器与温度传感器提供一个协同工作的平台，为斜拉索相对索力温度补偿监测提供基础保障。桥梁缆索索力温度补偿器安装装置的特点包括：1)能够同时将GPS信号接收机和温度传感器与拉索端部进行有效连接；2)能够用于安装不同尺寸的温度传感器；3)能够自由调整GPS天线空间位置。Therefore, the development of a bridge cable cable force temperature compensator installation device can not only ensure the effective connection and fixation of the relative cable force sensor and the end of the cable, but also provide a collaborative work platform for the GPS displacement sensor and temperature sensor. It provides a basic guarantee for the temperature compensation monitoring of the relative cable force of the cable stay. The characteristics of the bridge cable cable force temperature compensator installation device include: 1) It can effectively connect the GPS signal receiver and temperature sensor to the end of the cable at the same time; 2) It can be used to install temperature sensors of different sizes; 3) It can be freely Adjust the spatial position of the GPS antenna.
实用新型内容Utility model content
本实用新型提供一种桥梁缆索索力温度补偿器安装装置，其目的是为拉索端部位移传感器和拉索温度传感器协同工作提供一个可靠的安装平台，解决目前斜拉桥拉索相对索力温度补偿传感器在拉索端部安装困难的问题。The utility model provides a bridge cable cable force temperature compensator installation device, the purpose of which is to provide a reliable installation platform for the coordinated work of the cable end displacement sensor and the cable temperature sensor, and solve the problem of the relative cable force of the current cable-stayed bridge. The temperature compensation sensor is difficult to install at the end of the cable.
本实用新型的技术方案如下：The technical scheme of the utility model is as follows:
一种桥梁缆索索力温度补偿器安装装置，主要由拉索锚固夹具1、伸缩杆13、天线支撑杆16和GPS信号接收机天线17组成；A bridge cable cable force temperature compensator installation device, mainly composed of a cable anchor fixture 1, a telescopic rod 13, an antenna support rod 16 and a GPS signal receiver antenna 17;
所述的拉索锚固夹具1，主要由夹具子片2、夹具母片3和高强预应力螺杆7组成；所述的夹具子片2，下端面中心开有半圆柱体的槽口，槽口两端设有定位键齿4；所述的夹具母片3，上端面中心开有半圆柱体的槽口，槽口两端设有与定位键齿4相对应的定位凹槽5；夹具子片2的槽口与夹具母片3的槽口相对应，二者槽口的内壁安装橡胶垫层6，以增大拉索锚固夹具1与拉索外套管的摩擦力；夹具子片2的定位键齿4与夹具母片3的定位凹槽5相互啮合，进行定位，通过高强预应力螺杆7使夹具子片2与夹具母片3固定成为整体，形成拉索锚固夹具1；The cable anchoring fixture 1 is mainly composed of a fixture sub-piece 2, a fixture mother piece 3 and a high-strength prestressed screw rod 7; the clamp sub-piece 2 has a semi-cylindrical notch in the center of the lower end surface, and the notch The two ends are provided with positioning key teeth 4; the clamp mother piece 3 has a semi-cylindrical notch in the center of the upper end surface, and the two ends of the notch are provided with positioning grooves 5 corresponding to the positioning key teeth 4; The notch of the piece 2 corresponds to the notch of the clamp mother piece 3, and the inner wall of the two notches is equipped with a rubber pad 6 to increase the friction between the cable anchor clamp 1 and the cable outer sleeve; the clamp sub-piece 2 The positioning key teeth 4 mesh with the positioning groove 5 of the clamp mother piece 3 for positioning, and the clamp sub-piece 2 and the clamp mother piece 3 are fixed as a whole through the high-strength prestressed screw 7 to form a cable anchoring fixture 1;
所述的夹具子片2，上端面的一侧开有温度传感器安装底座卡槽9，活动安装底座11的下端嵌入温度传感器安装卡槽9内，活动安装底座11在温度传感器安装卡槽9内自由滑动，以适应不同型号温度传感器的尺寸，确定温度传感器的安装位置后，通过底座定位螺旋12将活动安装底座11固定在温度传感器安装卡槽9内；固定安装底座10安装在夹具子片2的上端面的另一侧；The clamp sub-piece 2 has a temperature sensor installation base slot 9 on one side of the upper end surface, and the lower end of the movable installation base 11 is embedded in the temperature sensor installation slot 9, and the movable installation base 11 is in the temperature sensor installation slot 9. Freely slide to adapt to the size of different types of temperature sensors. After determining the installation position of the temperature sensor, fix the movable installation base 11 in the temperature sensor installation slot 9 through the base positioning screw 12; the fixed installation base 10 is installed on the clamp sub-piece 2 the other side of the upper end surface;
所述的夹具母片3，下端面底端设有耳板8，耳板8上设有通孔；The clamp mother piece 3 is provided with an ear plate 8 at the bottom of the lower end surface, and the ear plate 8 is provided with a through hole;
所述的伸缩杆13，一端通过伸缩杆连接螺栓14与耳板8连接，另一端通过支撑杆连接螺栓15与天线支撑杆16连接；所述的GPS信号接收机天线17，安装在天线支撑杆16的另一端；所述的天线支撑杆16，在平面内自由转动；通过调整伸缩杆13的长短和旋转天线支撑杆16，以调整GPS信号接收机天线的位置。Described telescopic rod 13, one end is connected with lug plate 8 by telescoping rod connecting bolt 14, and the other end is connected with antenna support rod 16 by support rod connecting bolt 15; Described GPS signal receiver antenna 17 is installed on antenna support rod The other end of 16; Described antenna support rod 16, freely rotates in the plane; By adjusting the length of telescoping rod 13 and rotating antenna support rod 16, to adjust the position of GPS signal receiver antenna.
本实用新型通过调整伸缩杆13的长短和旋转天线支撑杆16，可以将GPS信号接收机天线17调整到适当位置，确保卫星信号无遮挡；通过旋紧伸缩杆连接螺栓14可以对GPS信号接收机天线17的位置进行有效固定，确保在日常监测过程中GPS信号接收机天线17与拉索端部的相对位置保持固定。温度传感器的固定安装底座10和活动安装底座11用于安装光纤光栅温度传感器，其中活动安装底座11可以沿温度传感器安装卡槽9滑动以便适应不同型号温度传感器的尺寸，通过旋紧活动安装底座11上的底座定位螺旋12以固定活动安装底座11在温度传感器安装卡槽9内的位置。固定安装底座10和活动安装底座11的顶面要高出拉索锚固夹具表面一定高度，减少拉索锚固夹具1表面温度对温度传感器监测效果的影响。The utility model can adjust the GPS signal receiver antenna 17 to an appropriate position by adjusting the length of the telescopic rod 13 and rotating the antenna support rod 16 to ensure that the satellite signal is not blocked; by tightening the telescopic rod connecting bolt 14, the GPS signal receiver can be The position of the antenna 17 is effectively fixed to ensure that the relative position between the GPS signal receiver antenna 17 and the end of the cable stays fixed during the daily monitoring process. The fixed installation base 10 and the movable installation base 11 of the temperature sensor are used to install the fiber grating temperature sensor, wherein the movable installation base 11 can slide along the temperature sensor installation slot 9 so as to adapt to the size of different types of temperature sensors, and the movable installation base 11 can be tightened The base positioning screw 12 on the base is used to fix the position of the movable installation base 11 in the temperature sensor installation slot 9 . The top surface of the fixed installation base 10 and the movable installation base 11 should be higher than the surface of the cable anchoring fixture by a certain height, so as to reduce the influence of the surface temperature of the cable anchoring fixture 1 on the monitoring effect of the temperature sensor.
本实用新型的有益效果：该装置可以与斜拉桥拉索端部进行稳固的固定；可以控制并固定GPS信号接收机天线与拉索的相对距离；可以调整GPS型号接收机的方向以便适合在索塔锚固端拉索间距较小的情况下安装；可以自由调整传感器固定和活动安装底座之间的距离，以便适应不同型号温度传感器的安装；该装置为工程技术人员在斜拉桥拉索端部安装相对索力温度补偿监测传感器，进而研究斜拉桥服役过程中斜拉索索力变化规律提供了有力的工具。Beneficial effects of the utility model: the device can be firmly fixed to the cable end of the cable-stayed bridge; the relative distance between the antenna of the GPS signal receiver and the cable can be controlled and fixed; the direction of the GPS model receiver can be adjusted so as to be suitable for It is installed when the distance between the cables at the anchorage end of the cable tower is small; the distance between the fixed sensor and the movable installation base can be adjusted freely to adapt to the installation of different types of temperature sensors; It provides a powerful tool to study the change law of the cable force of the cable-stayed bridge during the service process of the cable-stayed bridge.
附图说明Description of drawings
图1是桥梁缆索索力温度补偿器安装装置整体结构示意图；Fig. 1 is a schematic diagram of the overall structure of the bridge cable cable force temperature compensator installation device;
图2是桥梁缆索索力温度补偿器安装装置中拉索锚固夹具示意图；Fig. 2 is a schematic diagram of the cable anchoring fixture in the bridge cable cable force temperature compensator installation device;
图3是图2中拉索锚固夹具的A-A剖面图；Fig. 3 is the A-A sectional view of the cable anchor fixture in Fig. 2;
图4是图2中夹具子片示意图；Fig. 4 is a schematic diagram of the clamp sub-sheet in Fig. 2;
图5是图2中夹具母片示意图；Fig. 5 is a schematic diagram of the master piece of the fixture in Fig. 2;
图6是图3中拉索锚固夹具的B-B剖面图；Fig. 6 is a B-B sectional view of the cable anchor fixture in Fig. 3;
图7是天线支撑杆旋转示意图；Fig. 7 is a schematic diagram of the rotation of the antenna support rod;
图8是伸缩杆伸缩示意图；Figure 8 is a telescopic schematic diagram of the telescopic rod;
图9是温度传感器活动底座调整纵向固定位置示意图。Fig. 9 is a schematic diagram of adjusting the longitudinal fixed position of the movable base of the temperature sensor.
图中：1拉索锚固夹具；2夹具子片；3夹具母片；4定位键齿；5定位凹槽；6橡胶垫层；7高强预应力螺杆；8耳板；9温度传感器安装底座卡槽；10固定安装底座；11活动安装底座；12底座定位螺旋；13伸缩杆；14伸缩杆连接螺栓；15支撑杆连接螺栓；16天线支撑杆；17GPS信号接收机天线。In the figure: 1 cable anchor clamp; 2 clamp sub-piece; 3 clamp mother piece; 4 positioning key teeth; 5 positioning groove; 6 rubber pad; 7 high-strength prestressed screw; 8 lug plate; Groove; 10 fixed mounting base; 11 movable mounting base; 12 base positioning screw; 13 telescopic rod; 14 telescopic rod connecting bolt; 15 supporting rod connecting bolt; 16 antenna supporting rod; 17 GPS signal receiver antenna.
具体实施方式Detailed ways
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.
一种桥梁缆索索力温度补偿器安装装置，具体步骤如下：A bridge cable cable force temperature compensator installation device, the specific steps are as follows:
步骤1：根据实际工程中斜拉桥拉索具体尺寸确定温度自补偿斜拉桥拉索相对索力监测装置中拉索锚固夹具1的具体尺寸；Step 1: Determine the specific size of the cable anchoring fixture 1 in the relative cable force monitoring device of the temperature self-compensating cable-stayed bridge cable according to the specific size of the cable-stayed bridge cable in the actual project;
步骤2：分别在拉索的索梁和索塔锚固段安装温度自补偿斜拉桥拉索相对索力监测装置，将温度自补偿斜拉桥拉索相对索力监测装置通过拉索锚固夹具1与斜拉索连接，其中，夹具子片2与夹具母片3通过定位健齿4和定位凹槽5进行定位；Step 2: Install the temperature self-compensating cable-stayed bridge cable relative cable force monitoring device on the cable girder and cable tower anchorage sections respectively, and pass the temperature self-compensating cable-stayed bridge cable relative cable force monitoring device through the cable anchorage fixture 1 It is connected with the stay cable, wherein, the clamp sub-piece 2 and the clamp mother piece 3 are positioned through the positioning tooth 4 and the positioning groove 5;
步骤3：拉索锚固夹具子片2和拉索锚固夹具母片3通过拉索锚固夹具高强预应力螺杆7与拉索进行固定，内部衬垫橡胶垫层6来增大拉索锚固夹具1与拉索外套管的摩擦力，起到进一步固定装置和拉索连接的作用；Step 3: The sub-piece 2 of the cable anchoring fixture and the mother piece 3 of the cable anchoring fixture are fixed to the cable through the high-strength prestressed screw 7 of the cable anchoring fixture, and the inner rubber cushion layer 6 is used to increase the size of the cable anchoring fixture 1 and the cable. The friction force of the outer sleeve of the cable plays a role in further connecting the fixing device with the cable;
步骤4：将拉索锚固夹具1调整到适当位置并与拉索连接牢固后，通过GPS信号接收机天线伸缩杆连接螺栓14将GPS信号接收机的天线伸缩杆13与拉索锚固夹具的耳板8进行连接；Step 4: After adjusting the cable anchoring fixture 1 to an appropriate position and firmly connecting it with the cable, connect the antenna telescopic rod 13 of the GPS signal receiver to the lug plate of the cable anchoring fixture through the connecting bolt 14 of the antenna telescopic rod of the GPS signal receiver 8 to connect;
步骤5：GPS信号接收机的天线支撑杆16通过GPS信号接收机的支撑杆连接螺栓15与GPS信号接收机的天线伸缩杆13连接，GPS信号接收机天线17安装在GPS信号接收机天线支撑杆16的端部；Step 5: The antenna support pole 16 of the GPS signal receiver is connected with the antenna telescopic pole 13 of the GPS signal receiver through the support pole connecting bolt 15 of the GPS signal receiver, and the GPS signal receiver antenna 17 is installed on the antenna support pole of the GPS signal receiver the end of 16;
步骤6：温度传感器的固定安装底座10和温度传感器的活动安装底座11位于拉索锚固夹具子片2上；温度传感器的活动安装底座11嵌于温度传感器安装底座卡槽9内，通过旋转活动底座定位螺旋12固定温度传感器的活动安装底座11在温度传感器安装底座卡槽内9的位置，以便适用于安装不同尺寸类型的温度传感器。Step 6: The fixed installation base 10 of the temperature sensor and the movable installation base 11 of the temperature sensor are located on the sub-piece 2 of the cable anchorage fixture; the movable installation base 11 of the temperature sensor is embedded in the slot 9 of the temperature sensor installation base, and the The positioning screw 12 fixes the position of the movable mounting base 11 of the temperature sensor in the slot 9 of the temperature sensor mounting base, so that it is suitable for installing temperature sensors of different sizes and types.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108560421A (en) * | 2018-03-15 | 2018-09-21 | 大连理工大学 | A kind of bridge cable Suo Li temperature compensator mounting devices |
| CN110524307A (en) * | 2019-09-11 | 2019-12-03 | 河南理工大学 | A kind of work pieces process high accuracy positioning tool compensating apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108560421A (en) * | 2018-03-15 | 2018-09-21 | 大连理工大学 | A kind of bridge cable Suo Li temperature compensator mounting devices |
| CN108560421B (en) * | 2018-03-15 | 2023-12-15 | 大连理工大学 | Bridge cable force temperature compensator installation device |
| CN110524307A (en) * | 2019-09-11 | 2019-12-03 | 河南理工大学 | A kind of work pieces process high accuracy positioning tool compensating apparatus |
| CN110524307B (en) * | 2019-09-11 | 2020-08-25 | 河南理工大学 | High-precision positioning tool compensation device for workpiece machining |
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