WO2022083054A1 - 基于准确测定摩擦系数的服役期桥梁测力支座标定方法 - Google Patents
基于准确测定摩擦系数的服役期桥梁测力支座标定方法 Download PDFInfo
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- WO2022083054A1 WO2022083054A1 PCT/CN2021/081402 CN2021081402W WO2022083054A1 WO 2022083054 A1 WO2022083054 A1 WO 2022083054A1 CN 2021081402 W CN2021081402 W CN 2021081402W WO 2022083054 A1 WO2022083054 A1 WO 2022083054A1
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- force
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- horizontal
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- lateral force
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
Definitions
- the invention relates to the technical field of rail transit structural engineering, and can also be applied to structural engineering fields such as highways, municipal administrations, and buildings, in particular to a method for accurately measuring the friction coefficient between a force measuring device and a support.
- the force measuring device and the support are used to measure the force of the force-transmitting components between the structures, and are widely used in various fields, especially in the field of bridge engineering.
- the change of the force of the device can reflect the overall operation of the bridge to a large extent, realize the collection of the monitoring data of the vertical reaction force of the bridge support, and provide a technical basis for the health monitoring of the bridge.
- the monitoring of vertical static load and dynamic load of bridge bearing is of great practical significance to the operation of bridges.
- the purpose of the present invention is to provide a method for accurately measuring the friction coefficient between the force measuring device and the support, so as to solve the problem that the friction coefficient of the wedge-shaped height-adjusting force measuring device cannot be accurately measured in service state, resulting in inaccurate vertical force measurement. question.
- the present invention adopts the following scheme:
- the calibration method of bridge force measuring bearings in service period based on accurate determination of friction coefficient includes the following steps:
- A1 Record the horizontal or lateral force value of the force measuring device, this step includes two cases a1 and a2:
- a1 First record the horizontal force or lateral force value of the sensing device before the force measuring device is lifted; then the power device applies a horizontal or lateral force to the two wedge-shaped load converters on the force measuring device to promote the height of the force measuring device Change, record the horizontal or lateral force value of the sensing device when the height changes or when the pause changes;
- a2 First apply a horizontal or lateral force to the two wedge-shaped load converters on the force measuring device to cause the height of the force measuring device to change, and record the horizontal or lateral force value of the sensing device when the height changes or when the change is suspended; then Accurately adjust the gap between the two load converters to make the sensing device and the load converter close to each other; then release the power device, and record the horizontal or lateral force value measured by the sensing device between the two load converters at this time;
- a3 First apply a horizontal or lateral force to the two wedge-shaped load converters to cause the height of the force measuring device to change, and record the horizontal or lateral force value of the sensing device when the height changes or when the change is suspended; then reduce the load on the two wedges.
- A2 According to the mechanical balance relationship of the force on the load converter in a1 or a2 or a3, the relationship between the friction coefficient and the inclination angle of the load converter, the horizontal force or the lateral force is obtained;
- A3 According to the horizontal or lateral force value recorded in a1 or a2 or a3 and the relational expression in A2, solve the friction coefficient value.
- step A4 is also included: according to the mechanical balance relationship of the force on the load converter in a1, a2 or a3, the relationship between the vertical force and the inclination angle of the load converter, the horizontal or lateral force, and the friction coefficient is obtained, In combination with the friction coefficient value obtained in A3, the vertical force value of the force measuring device is accurately obtained.
- the force measuring device used includes an upper adjustment plate and a lower adjustment plate, a support core is arranged above the upper adjustment plate or below the lower adjustment plate, and an adjustment cavity is arranged on the bottom surface of the upper adjustment plate, Two wedge-shaped load converters are arranged in the adjustment cavity, one or more sensing devices are arranged between the two load converters, a power device is arranged on the force measuring device, and the output end of the power device is connected in series with one of the load sensors.
- the side and/or end of the converter is in contact, the fixed end of the power unit is connected to the side and/or end of another load converter, and the power unit outputs a horizontal or lateral force to push the two load converters away from each other, so that the upward adjustment When the board height rises to the set height, the power output is suspended. At this time, the horizontal or lateral force applied by the power device can be directly measured by the sensor device connected in series with the output end.
- one side or both sides of the sensing device is provided with a limiting device, the limiting device is an adjusting screw, and the adjusting screw is screwed with the corresponding load converter.
- the power device urges the space between the two load converters After the relative distance, the height of the force measuring device is raised to the set height, and a gap is formed between the two load converters.
- the sensing device is adjusted to be close to the load converter by adjusting the screw, and the horizontal or lateral force exerted by the power device is released. After that, the sensing device between the two load converters can accurately measure the horizontal or lateral force value at this time.
- a locking device is provided between the sensing device and the adjusting screw, and the locking device is a steel plate, a section steel, a round steel, an angle steel, a steel pipe or a concrete block.
- the number of locking devices can be selected according to the actual situation of the site, so that the locking device can be adjusted and easy to operate.
- both ends of the sensing device are provided with matching fixing seats, the fixing seats are located between the sensing device and the limiting device, and the fixing seats are in one or more groups.
- the limiting device is two wedge-shaped blocks, the inclined surfaces of the two wedge-shaped blocks are matched and fit with each other, and the mutual sliding of the two wedge-shaped blocks adjusts the sensing device to be in close contact with the load converter.
- the two wedge-shaped blocks can precisely adjust the gap between the sensing device and the load converter by sliding up and down each other, or sliding forward and backward, so that the sensing device and the load converter are closely attached. Smaller force (the force and the sliding direction of the two wedge-shaped blocks are in the same direction) can obtain a larger lateral force (the force is in the horizontal direction), so as to achieve the purpose of close contact between the sensing device and the load converter, so as to adjust the speed Faster, saves time and effort.
- the force measuring device includes a support core, a lower base plate, and two load converters.
- the bottom surface of the support core and the top surface of the two load converters are inclined straight surfaces or The cylindrical surface or the curved surface is in contact, and a plurality of sensing devices are arranged between the load converter and the side wall of the lower seat plate in the horizontal direction, and the horizontal force or lateral force value is recorded by the sensing device.
- a power device is installed on both side walls of the lower seat plate, and the output end of the power device directly or indirectly contacts the sensing device through the side wall of the lower seat plate, the power device exerts a horizontal force or a lateral force, and the sensing device
- the two load converters approach each other to lift the support core, and record the horizontal force or lateral force on the sensing device when the height of the support core starts to change or pauses to change, and the output end of the power device
- a load distribution baffle is set between the load distribution baffle and the sensing device.
- the output end of the power device is in contact with the side of the load distribution baffle.
- the sensing device is located between the load distribution baffle and the load converter. Install adjustable limit blocks.
- the support core is placed in a bottom basin with a pelvic cavity structure, a force-measuring carrier is arranged between the support core and the bottom basin, and a sensing device is provided on the side of the force-measuring body, and the sensing device passes through The signal line is connected with the external data acquisition system.
- the top surface of the load converter is in contact with the inclined straight surface or the cylindrical surface or the curved surface of the top surface of the adjustment cavity
- the bottom surface of the load converter is in contact with the flat surface, curved surface or inclined straight surface of the supporting surface on the lower adjustment plate.
- a matching upper friction pair and a lower friction pair are respectively arranged between the surface and the top surface of the load converter, and between the bottom surface of the load converter and the top surface of the lower adjusting plate
- the power device is a hydraulic cylinder or a pneumatic cylinder or a mechanical transmission mechanism.
- the present invention obtains the relationship between the friction coefficient and the horizontal or lateral force and the inclination angle of the load converter through the mechanical balance relationship of the force on the load converter, and obtains the friction coefficient accurately;
- the relationship between the vertical force and the inclination angle of the load converter, the horizontal or lateral force, and the friction coefficient can accurately calculate the vertical force.
- This method can accurately measure the friction coefficient when the force measuring device and the support are in service.
- the vertical force is obtained, so as to realize the rapid and accurate vertical force calibration of the bearing, ensure the accurate monitoring of the force of the bearing during the operation period, and improve the safety of the bridge structure.
- This method can precisely adjust the gap between the two load converters by adjusting the screw or wedge block, so that the sensing device and the load converter are closely attached, so that the height of the device will not change in the two balance relations.
- the constant height means that the load on the upper part is constant, so the friction coefficient value calculated based on the constant height of the device is more accurate, and the calibration of the vertical force is also more accurate.
- Fig. 1 is the flow chart structure schematic diagram of the present invention
- Fig. 2 is the structural representation of the present invention
- FIG. 3 is a schematic structural diagram of the support core located above the upper adjustment plate
- FIG. 4 is a schematic structural diagram of the series connection between the adjusting screw and the sensor
- FIG. 5 is a schematic view of the structure provided with a locking device
- FIG. 6 is another structural schematic diagram of the locking device and the adjusting screw
- Fig. 7 is the structure schematic diagram that is provided with fixed seat
- Figure 8 is a structural diagram in which the limiting device is a wedge-shaped block:
- Fig. 9 is the structure diagram of adding power unit in Fig. 8.
- Figure 10 is a schematic diagram of another sliding structure of two wedge-shaped blocks
- Figure 11 is a schematic structural diagram of a wedge block connecting a power device
- Fig. 12 is the structural schematic diagram of the access power device in Fig. 2;
- Fig. 13 is the structural representation in embodiment 9;
- Figure 14 is a structural diagram with three power units in Embodiment 9;
- FIG. 15 is a structural diagram with a power unit in Embodiment 9;
- FIG. 16 is a structural diagram with two power units in Embodiment 9;
- Figure 17 is an exploded view of the force on the load converter when the height of the force measuring device is lowered;
- Figure 18 is an exploded view of the force on the load converter when the force measuring device rises at a high speed
- FIG. 19 is a schematic structural diagram of Embodiment 10.
- the terms “arranged”, “opened”, “installed”, “connected” and “connected” should be understood in a broad sense, for example, It can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be internal communication between two components.
- the specific meanings of the above terms in the present invention can be understood in specific situations.
- the calibration method of bridge force measuring bearings in service period based on accurate determination of friction coefficient includes the following steps:
- A1 Record the horizontal or lateral force value of the force measuring device. This step includes two methods: a1 and a2:
- the first a1 first record the horizontal force or lateral force value T drop of the sensing device 5 before the load-measuring device is lifted; To force, the height of the force measuring device is changed, the two load converters 3 are separated from each other, the height of the force measuring device rises, and the horizontal or lateral force value T of the sensing device 5 rises when the recording height changes or when the change is suspended;
- the second type a2 First, apply a horizontal or lateral force to the two wedge-shaped load converters 3 on the force measuring device through the power device 13, and the two load converters 3 are far away from each other, so that the height of the force measuring device is raised, and the height is recorded.
- the horizontal or lateral force value T of the sensing device 5 rises ; then precisely adjust the gap between the two load converters 3 to make the sensing device 5 and the load converter 3 closely adhere; then release the power device 13. Record the horizontal or lateral force value T drop measured by the sensing device 5 between the two load converters 3 at this time;
- the third type a3 first apply a horizontal or lateral force to the two wedge-shaped load converters 3 to promote the height of the force measuring device to rise, and record the horizontal or lateral force value T of the sensing device 5 rises when the height changes or when the change is suspended. ; Then reduce the horizontal or lateral force value applied to the two wedge-shaped load converters 3 to cause the height of the force measuring device to drop , and the horizontal or lateral force value T of the sensing device 5 decreases when the recording height changes or when the change is suspended. ;
- A2 According to the mechanical balance relationship of the force on the load converter in a1 or a2 or a3, the relationship between the friction coefficient and the inclination angle of the load converter 3, the horizontal force or the lateral force is obtained;
- A3 According to the horizontal or lateral force value recorded in a1 or a2 or a3 and the relational expression in A2, solve the friction coefficient value.
- the vertical force on the force measuring device is F
- the vertical force transmitted to the two wedge-shaped converters 3 is F/2 respectively
- the upper and lower sliding surfaces of the load converter 3 are respectively F/2.
- the frictional forces are f1 and f2 respectively
- the upper sliding surface is subjected to a pressure N1 perpendicular to the surface
- the lower sliding surface is subjected to a vertical pressure F/2
- the force of the load converter 3 is decomposed, and according to the mechanical balance relationship, it is obtained:
- f : 1 N 1 ⁇ 1
- f2 ⁇ 2 ⁇ F/2
- N 1 F/2(cos ⁇ + ⁇ 1 ⁇ sin ⁇ )
- the equivalent friction coefficient ⁇ is used to replace the friction coefficients ⁇ 1 and ⁇ of the upper and lower sliding surfaces 2 get
- the upper and lower sliding surfaces of the load converter are subjected to friction forces of f3 and f4 respectively
- the upper sliding surface is subjected to a pressure N2 perpen
- the friction forces on the lower sliding surface are f1 and f2 respectively, the upper sliding surface is subjected to a pressure N1 perpendicular to the surface, and the lower sliding surface is subjected to a vertical pressure F/2, the force on the load converter 3 is decomposed, and the mechanical balance
- the equivalent friction coefficient ⁇ is used to replace the friction coefficient ⁇ of the upper and lower sliding surfaces 1 and ⁇ 2 get According to the two formulas of T rise and T fall , we can get Both T rise and T drop are obtained directly by the sensing device 5, so the friction coefficient value can be calculated accurately.
- step A4 According to the mechanical balance relationship of the force on the load converter 3 in a1, a2 or a3, the relationship between the vertical force and the inclination angle of the load converter 3, the horizontal or lateral force, and the friction coefficient is obtained. Combined with the friction coefficient value obtained in A3, the vertical force value of the force measuring device can be accurately obtained.
- the force measuring device used includes an upper adjustment plate 6 and a lower adjustment plate 8, the support core 1 is arranged above the upper adjustment plate 6 or below the lower adjustment plate 8, and the bottom surface of the upper adjustment plate 6 is provided with a support core 1.
- Adjustment cavity 9 two wedge-shaped load converters 3 are arranged in the adjustment cavity 9, the top surface of the load converter 3 is in contact with the top surface of the adjustment cavity 9 with an oblique straight surface or a cylindrical surface or a curved surface, and the bottom surface of the load converter 3 is in contact with the lower surface.
- the upper supporting surface of the adjustment plate 8 is in contact with a plane or a curved surface or an oblique straight surface, and a matching upper surface is respectively provided between the top surface of the adjustment cavity 9 and the top surface of the load converter 3 and between the bottom surface of the load converter 3 and the top surface of the lower adjustment plate.
- the friction pair 2 and the lower friction pair 4, one or more sensing devices 5 are arranged between the two load converters 3, a power device 13 is arranged on the force measuring device, and the power device 13 is a hydraulic cylinder or a pneumatic cylinder or a mechanical transmission mechanism, In this embodiment, a hydraulic jack is selected.
- the output end of the power device 13 is connected to the side and/or end of one of the load converters 3 in series with the sensor device 5 , and the fixed end of the power device 13 is connected to the side of the other load converter 3 .
- the power unit 13 outputs horizontal or lateral force to push the two load converters 3 away from each other, so that the power output is suspended when the height of the upper adjusting plate 6 rises to the set elevation, and the level applied by the power unit 13 at this time Or the lateral force value can be directly measured through the sensor device 5 connected in series at the output end.
- One or both sides of the sensing device 5 is provided with a limit device, which can eliminate the gap between the two load converters 3 and ensure that the force measuring device will not change its height again after reaching the set elevation.
- the limiting device is an adjusting screw 10, and the adjusting screw 10 is threadedly connected with the corresponding load converter 3.
- the power device 13 promotes the relative distance between the two load converters 3, so that the height of the force measuring device rises to the set elevation, A gap is formed between the two load converters 3, and the sensing device 5 is adjusted to be close to the load converter 3 by adjusting the screw 10. After the horizontal or lateral force exerted by the power device 13 is released, the space between the two load converters 3 The sensor device 5 accurately measures the horizontal or lateral force value at this time.
- a locking device 11 is provided between the sensing device 5 and the adjusting screw 10 , and the locking device 11 is a steel plate, shaped steel, round steel, angle steel, steel pipe or concrete block.
- the number of the locking devices 11 can be selected according to the actual situation on site, so that the locking devices 11 can be adjusted and easy to operate.
- one or both ends of the adjusting screw 10 are screwed with the corresponding load converter 3 , and the sensing device 5 is arranged between the two adjusting screws 10 or connected in series with the free end of the adjusting screw 10 .
- Two ends of the sensing device 5 are provided with matching fixing bases 12 , the fixing bases 12 are located between the sensing device 5 and the limiting device, and the fixing bases 12 are in one or more groups. That is to say, the fixing bases 12 can be separated or integrated. If they are arranged separately, each sensing device 5 corresponds to a set of fixing bases 12 . If they are integral, a plurality of sensing devices 5 share a set of fixing bases 12 . .
- the limiting device adopts two wedge-shaped blocks 14, and the inclined surfaces of the two wedge-shaped blocks 14 match and fit each other.
- the two wedge-shaped blocks 14 can precisely adjust the gap between the sensing device 5 and the load converter 3 by sliding up and down each other or sliding forward and backward, so that the sensing device 5 and the load converter 6 are closely attached.
- the lever principle so that with a small force (the force and the two wedge blocks 14 slide in the same direction), a large lateral force (the force is in the horizontal direction) can be obtained, so as to achieve the sensing device 5 and the load converter.
- the purpose of 13 close contact is to make the adjustment speed faster and save time and effort.
- a power device 13 can also be set on the two wedge blocks 14, and the output end of the power device 13 is in contact with the end of one of the wedge blocks 14.
- the fixed end of the device 13 is connected to another wedge block 14, and the power device 13 exerts force to play an auxiliary role.
- the power device 13 can also be connected to an external controller to realize intelligent adjustment, which is more efficient and fast.
- this embodiment adopts another structure to realize the method of the present invention.
- the contact surface between the support core 1 and the load converter 3 is an oblique straight surface and the bottom surface of the support core 1 is arranged in a V shape.
- the contact surface between the load converter 3 and the lower seat plate 15 is a plane, and a plurality of sensing devices 5 are located between the load converter 3 and the side wall of the lower seat plate 15 in the horizontal direction.
- the vertical force on the core 1 is decomposed into a horizontal component by the load converter 3, so that the sensing device 5 is compressed, and the horizontal or lateral force value at this time is recorded by the sensing device 5.
- the power device 13 is installed on both side walls of the lower seat plate 15 , and the output end of the power device 13 directly or indirectly contacts the sensor device 5 through the side wall of the lower seat plate 15 , and the power device 13 exerts a horizontal force, so that the sensor device 5 Under pressure, the power unit 13 can use a hydraulic cylinder or a pneumatic cylinder to achieve power output.
- the two load converters 3 are close to each other to lift the support core 1, and record the transmission when the height of the support core 1 begins to change or pauses to change.
- a load distribution baffle 17 is arranged between the output end of the power device 13 and the sensing device 5 , the output end of the power device 13 is in contact with the side of the load distribution baffle 17 , and the sensing device 5 is located between the load distribution baffle 17 and the load converter 3 .
- the load distribution baffle 17 can reduce the number of power devices 13 used.
- three sensing devices 5 are provided, and three power devices 13 are used to correspond to them, or one or two power devices 13 can be used to correspond to three transmission devices.
- the sensing device 5 is installed, and an adjustable limit block 16 is installed between the load distribution baffle plate 17 and the side wall of the lower seat plate 15 .
- the support core is placed in the bottom basin with the structure of the basin 18 , and a load bearing body 19 is arranged between the support core 1 and the bottom basin 18 .
- the side of the body 19 is provided with a sensing device 5, and the signal line of the sensing device 5 is connected to the external data acquisition system 20 through the mounting hole on the side wall of the bottom basin 18.
- the data acquisition system 20 is used to implement the vertical bearing of the monitoring support device. force.
- the electrical signal generated by the sensing device 5 under the action of the horizontal pressure is transmitted to the data acquisition system 20 through a wireless or wired network to collect, analyze, process and measure the load. Purpose of force measurement.
- the data acquisition system 20 includes a demodulator and a computer system (known technology), the input end of the demodulator is connected with the sensing device 5 installed on the force-measuring body 19 through a signal line, and the output end of the demodulator is connected through a signal line.
- a wireless network or a wired network is connected to a computer system, and the computer system is also provided with a real-time monitoring and alarm system.
- the sensing device 5 senses the compressive stress change of the force measuring carrier 19 and outputs the pressure wavelength signal to the demodulator, and the demodulator analyzes and processes the wavelength signal and transmits it to the computer system via a wireless network or a wired network. After processing, the actual load of the support is visually displayed and compared with the normal load of the support. When an abnormality occurs, an alarm is issued to monitor the load of the support from a long distance and collect the force data of the support in real time.
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Abstract
基于准确测定摩擦系数的服役期桥梁测力支座标定方法,包括步骤A1:记录测力装置所受的水平或侧向力值,先记录测力装置顶升前传感装置(5)的水平力或侧向力值;然后动力装置(13)对测力装置上的两楔形的荷载转换器(3)施加水平或者侧向力,促使测力装置的高度改变,记录高度改变时或者暂停改变时传感装置(5)的水平或侧向力值;A2:根据荷载转换器(3)所受力的力学平衡关系,得出摩擦系数与荷载转换器(3)倾斜角度、水平力或侧向力的关系式;A3:根据记录的水平或侧向力值及A2中的关系式,求解出摩擦系数值。用以解决服役状态下楔形调高测力装置的摩擦系数无法准确测定,导致竖向力测定不准确的问题。
Description
本发明涉及轨道交通结构工程技术领域,还可以应用于公路、市政、建筑等结构工程领域,具体涉及一种准确测定测力装置与支座的摩擦系数的测定方法。
测力装置与支座用于测定结构间传力构件的受力,被广泛应用于各个领域,特别是在桥梁工程领域,测力装置作为桥梁结构上部结构和下部结构主要传力构件,测力装置受力的变化可很大程度上反应桥梁的整体运行情况,实现桥梁支座即桥梁竖向反力监测数据的采集,可为桥梁的健康监测提供技术依据。随着我国高速公路、铁路桥梁建设逐年增加,对桥梁支座竖向静载和动载的监测对桥梁的运行具有重要现实意义。
对于楔形调高测力装置,因为在运营过程中楔形块不可避免存在磨损,且考虑材料自身的老化性能,其摩擦系数可能会产生变化,在通过测定测力装置的楔形机构水平力反推竖向力时,由于竖向力的求解与摩擦系数有关,因此摩擦系数的改变影响竖向力的精准性,因而需要对摩擦系数进行现场测定,但是目前对于楔形测力装置的摩擦系数测定问题无成熟的解决方案。
发明内容
本发明的目的在于提供一种准确测定测力装置与支座的摩擦系数的测定方法,用以解决服役状态下楔形调高测力装置的摩擦系数无法准确测定,导致竖向力测定不准确的问题。
为解决上述技术问题,本发明采用了以下方案:
基于准确测定摩擦系数的服役期桥梁测力支座标定方法,包括以下步骤:
A1:记录测力装置所受的水平或侧向力值,该步骤中包括a1和a2两种情况:
a1:先记录测力装置顶升前传感装置的水平力或侧向力值;然后动力装置对测力装置上的两楔形的荷载转换器施加水平或者侧向力,促使测力装置的高度改变,记录高度改变时或者暂停改变时传感装置的水平或侧向力值;
a2:先对测力装置上的两楔形的荷载转换器施加水平或者侧向力,促使测力装置的高度改变,记录高度改变时或者暂停改变时传感装置的水平或者侧向力值;然后精准调节两荷载转换器之间的间隙,促使传感装置与荷载转换器密贴; 再释放动力装置,记录此时两荷载转换器之间传感装置测出的水平或者侧向力值;
a3:先对两楔形的荷载转换器施加水平或者侧向力,促使测力装置的高度改变,记录高度改变时或者暂停改变时传感装置的水平或侧向力值;然后减小对两楔形的荷载转换器施加的水平或者侧向力值,促使测力装置的高度改变,记录高度改变时或者暂停改变时传感装置的水平或侧向力值;
A2:根据a1或a2或a3中荷载转换器所受力的力学平衡关系,得出摩擦系数与荷载转换器倾斜角度、水平力或侧向力的关系式;
A3:根据a1或a2或a3中记录的水平或侧向力值及A2中的关系式,求解出摩擦系数值。
优选的,还包括步骤A4:根据荷载转换器在a1或a2或a3中所受力的力学平衡关系,得出竖向力与荷载转换器倾角、水平或者侧向力、摩擦系数的关系式,在结合A3中求出的摩擦系数值,准确求出测力装置的竖向力值。
优选的,在a1、a2及a3中,采用的测力装置包括上调节板和下调节板,在上调节板上方或者下调节板下方设置支座芯体,上调节板底面设有调节腔,调节腔内设置两个楔形的荷载转换器,两荷载转换器之间设有一个或多个传感装置,测力装置上设置动力装置,动力装置的输出端串联传感装置后与其中一荷载转换器侧部和/或端部接触,动力装置的固定端与另一荷载转换器侧部和/或端部连接,动力装置输出水平或侧向力推动两荷载转换器相互远离,使得上调节板高度上升到设定高程时暂停动力输出,此时动力装置施加的水平或侧向力值可以通过输出端串联的传感装置直接测出。
优选的,传感装置的一侧或者两侧设置有限位装置,所述限位装置为调节螺杆,调节螺杆与对应的荷载转换器螺纹连接,步骤a2中,动力装置促使两荷载转换器之间相对远离后使得测力装置高度上升到设定高程,两荷载转换器之间形成间隙,通过调节螺杆将传感装置调节到与荷载转换器密贴,在释放动力装置施加的水平或侧向力后,两荷载转换器之间的传感装置准确测出此时的水平或侧向力值。
优选的,所述传感装置与调节螺杆之间设有锁定装置,所述锁定装置为钢板、型钢、圆钢、角钢、钢管或者混凝土块。锁定装置的数量可根据现场实际情况选 择适宜的数量,使得锁定装置可调节,易于操作。
优选的,所述传感装置两端设有匹配的固定座,固定座位于传感装置与限位装置之间,固定座为一组或多组。
优选的,所述限位装置为两楔形块,两楔形块的倾斜面相互匹配贴合,两楔形块的相互滑动将传感装置调节到与荷载转换器密贴。两楔形块可以通过上、下相互滑动或者前、后相互滑动精准调节传感装置与荷载转换器之间的间隙,使得传感装置与荷载转换器密贴,利用楔形块的杠杆原理,使得用较小的力(该力与两楔形块相互滑动方向同向)就可以得到较大的横向力(该力为水平方向),从而达到传感装置与荷载转换器密贴的目的,使得调节速度更快,省时省力。
优选的,对于A1中的a1,通过另一种结构实现,测力装置包括支座芯体、下座板、两荷载转换器,支座芯体底面与两荷载转换器顶面为斜直面或者柱面或者曲面接触,在水平方向位于荷载转换器与下座板的侧壁之间设有多个传感装置,通过传感装置记录水平力或者侧向力值。
优选的,所述下座板两侧壁上安装动力装置,动力装置的输出端穿过下座板的侧壁与传感装置直接或者间接接触,动力装置施加水平力或侧向力,传感装置受压,两荷载转换器相互靠近对支座芯体产生顶升,记录下支座芯体高度开始改变或者暂停改变时传感装置所受水平力或侧向力值,动力装置的输出端与传感装置之间设置荷载分布挡板,动力装置输出端与荷载分布挡板侧面接触,传感装置位于荷载分布挡板与荷载转换器之间,荷载分布挡板与下座板侧壁之间安装可调限位块。
优选的,所述支座芯体放置在具有盆腔结构的底盆内,支座芯体与底盆之间设有测力承载体,测力承载体侧面设有传感装置,传感装置通过信号线与外部的数据采集系统连接。
优选的,所述荷载转换器的顶面与调节腔的顶面斜直面或者柱面或者曲面接触,荷载转换器底面与下调节板上支承面平面或者曲面或者斜直面接触,所述调节腔顶面与荷载转换器顶面之间、荷载转换器底面与下调节板顶面之间分别设有匹配的上摩擦副和下摩擦副,动力装置为液压缸或者气压缸或者机械传动机构。
本发明具有的有益效果:
1、本发明通过将荷载转换器所受力的力学平衡关系,得出摩擦系数与水平 或侧向力、荷载转换器倾斜角之间的关系式,并准确求出摩擦系数;根据得出的竖向力与荷载转换器倾角、水平或者侧向力、摩擦系数的关系式,准确求出竖向力,本方法可以在测力装置与支座处于服役状态对摩擦系数精准测定,从而能准确求出竖向力,从而实现快速准确的对支座进行竖向力标定,保证对支座在运营期内受力的准确监测,提高桥梁结构的安全性。
2、本方法通过调节螺杆或者楔形块能精准调节两荷载转换器之间的间隙,促使传感装置与荷载转换器密贴,使得装置在两次平衡关系式中,其高度是不会变化的,高度不变则表示上部所受载荷不变,这样在基于装置高度不变的情况下计算出的摩擦系数值更为准确,使得对竖向力的标定也更为准确。
图1为本发明的流程结构示意图;
图2为本发明的结构示意图;
图3为支座芯体位于上调节板上方的结构示意图;
图4为调节螺杆与传感器串联的结构示意图;
图5为设有锁定装置的结构示意图;
图6为锁定装置与调节螺杆的另一种结构示意图;
图7为设有固定座的结构示意图;
图8为限位装置为楔形块的结构图:
图9为图8中加入动力装置的结构图;
图10为两楔形块的另一种滑动结构示意图;
图11为楔形块连接动力装置的结构示意图;
图12为图2中接入动力装置的结构示意图;
图13为实施例9中的结构示意图;
图14为实施例9中具有三个动力装置的结构图;
图15为实施例9中具有一个动力装置的结构图;
图16为实施例9中具有两个动力装置的结构图;
图17为测力装置高度下降时荷载转换器上的受力分解图;
图18为测力装置高速上升时荷载转换器上的受力分解图;
图19为实施例10的结构示意图。
附图标记:1-支座芯体,2-上摩擦副,3-荷载转换器,4-下摩擦副,5-传感装置,6-上调节板,7-螺栓,8-下调节板,9-调节腔,10-调节螺杆,11-锁定装置,12-固定座,13-动力装置,14-楔形块,15-下座板,16-可调限位块,17-荷载分布挡板,18-底盆,19-测力承载体,20-数据采集系统。
下面结合实施例及附图,对本发明作进一步的详细说明,但本发明的实施方式不限于此。
在本发明的描述中,需要说明的是,术语“中心”、“上”、“下”、“左”、“右”、“竖向”、“纵向”、“侧向”、“水平”、“内”、“外”、“前”、“后”、“顶”、“底”等指示的方位或位置关系为基于附图所示的方位或位置关系,或者是该发明产品使用时惯常摆放的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。
在本发明的描述中,还需要说明的是,除非另有明确的规定和限定,术语“设置”、“开有”、“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以具体情况理解上述术语在本发明中的具体含义。
实施例1
基于准确测定摩擦系数的服役期桥梁测力支座标定方法,包括以下步骤:
A1:记录测力装置所受的水平或侧向力值,该步骤中包括a1和a2两种方法:
第一种a1:先记录测力装置顶升前传感装置5的水平力或侧向力值T
降;然后通过动力装置13对测力装置上的两楔形的荷载转换器3施加水平或者侧向力,促使测力装置的高度改变,两荷载转换器3之间相互远离,测力装置高度上升,记录高度改变时或者暂停改变时传感装置5的水平或侧向力值T
升;
第二种a2:先通过动力装置13对测力装置上的两楔形的荷载转换器3施加水平或者侧向力,两荷载转换器3之间相互远离,促使测力装置的高度上升,记录高度改变时或者暂停改变时传感装置5的水平或者侧向力值T
升;然后精准调 节两荷载转换器3之间的间隙,促使传感装置5与荷载转换器3密贴;再释放动力装置13,记录此时两荷载转换器3之间传感装置5测出的水平或者侧向力值T
降;
第三种a3:先对两楔形的荷载转换器3施加水平或者侧向力,促使测力装置的高度上升,记录高度改变时或者暂停改变时传感装置5的水平或侧向力值T
升;然后减小对两楔形的荷载转换器3施加的水平或者侧向力值,促使测力装置的高度下降,记录高度改变时或者暂停改变时传感装置5的水平或侧向力值T
降;
A2:根据a1或a2或a3中荷载转换器所受力的力学平衡关系,得出摩擦系数与荷载转换器3倾斜角度、水平力或侧向力的关系式;
A3:根据a1或a2或a3中记录的水平或侧向力值及A2中的关系式,求解出摩擦系数值。
具体的,在a1中,测力装置所受的竖向力为F,该竖向力传递到两楔形转换器3上的竖向力分别为F/2,荷载转换器3上、下滑动面受到摩擦力分别为f1和f2,上滑动面受到垂直于该面的压力N1,下滑动面受到竖向的压力F/2,将荷载转换器3所受力进行分解,根据力学平衡关系得到:f
:1=N
1×μ
1,f2=μ
2×F/2,N
1=F/2(cosθ+μ
1×sinθ),采用等效摩擦系数μ代替上下滑动面摩擦系数μ
1和μ
2得到
动力装置13施加水平力后,荷载转换器上、下滑动面受到摩擦力分别为f3和f4,上滑动面受到垂直于该面的压力N2,下滑动面受到竖向的压力F/2,将荷载转换器3所受力进行分解,根据力学平衡关系得到:f
:3=N
1×μ
1,f4=μ
2×F/2,N
2=F/2(cosθ-μ
1×sinθ),采用等效摩擦系数μ代替上下滑动面摩擦系数μ
1和μ
2得到
(θ为荷载转换器的倾角),根据T
升和T
降两个公式可以得到
T
升和T
降都是通过传感装置5直接得到的,则可以准确计算摩擦系数值。
在a2中,先通过动力装置13施加水平力,促使两荷载转换器3相互远离,测力装置高度上升,记录此时的水平力值T
升,荷载转换器3上、下滑动面受到 摩擦力分别为f3和f4,上滑动面受到垂直于该面的压力N2,下滑动面受到竖向的压力F/2,将荷载转换器3所受力进行分解,根据力学平衡关系得到:f
:3=N
1×μ
1,f4=μ
2×F/2,N
2=F/2(cosθ-μ
1×sinθ),采用等效摩擦系数μ代替上下滑动面摩擦系数μ
1和μ
2得到
(θ为荷载转换器的倾角),由于两荷载转换器3之间相对远离后使得测力装置高度上升到设定高程,两荷载转换器3之间形成有间隙,在动力装置13释放后,上部构件的竖向载荷完全作用于测力装置上,采用限位装置调节,消除两荷载转换器3之间的间隙,在动力装置13释放后,两荷载转换器3之间由于无间隙就不会再次发生相对位移,此时测力装置的高度保持不变,两荷载转换器3之间传感装置5测出水平或侧向力值T
降更为准确,此时荷载转换器3上、下滑动面受到摩擦力分别为f1和f2,上滑动面受到垂直于该面的压力N1,下滑动面受到竖向的压力F/2,将荷载转换器3所受力进行分解,根据力学平衡关系得到:f
:1=N
1×μ
1,f2=μ
2×F/2,N
1=F/2(cosθ+μ
1×sinθ),采用等效摩擦系数μ代替上下滑动面摩擦系数μ
1和μ
2得到
根据T
升和T
降两个公式可以得到
T
升和T
降都是通过传感装置5直接得到的,则可以准确计算摩擦系数值。
在a3中,其力学平衡关系式同a1和a2中相同。
实施例2
还包括步骤A4:根据荷载转换器3在a1或a2或a3中所受力的力学平衡关系,得出竖向力与荷载转换器3倾角、水平或者侧向力、摩擦系数的关系式,在结合A3中求出的摩擦系数值,准确求出测力装置的竖向力值。
实施例3
在a1、a2及a3中,采用的测力装置包括上调节板6和下调节板8,在上调节板6上方或者下调节板8下方设置支座芯体1,上调节板6底面设有调节腔9,调节腔9内设置两个楔形的荷载转换器3,所述荷载转换器3的顶面与调节腔9的顶面斜直面或者柱面或者曲面接触,荷载转换器3底面与下调节板8上支承面平面或者曲面或者斜直面接触,所述调节腔9顶面与荷载转换器3顶面之间、荷载转换器3底面与下调节板顶面之间分别设有匹配的上摩擦副2和下摩擦副4,两荷载转换器3之间设有一个或多个传感装置5,测力装置上设置动力装置13,动力装置13为液压缸或者气压缸或者机械传动机构,本实施例中选用液压千斤顶,动力装置13的输出端串联传感装置5后与其中一荷载转换器3侧部和/或端部接触,动力装置13的固定端与另一荷载转换器3侧部和/或端部连接,动力装置13输出水平或侧向力推动两荷载转换器3相互远离,使得上调节板6高度上升到设定高程时暂停动力输出,此时动力装置13施加的水平或侧向力值可以通过输出端串联的传感装置5直接测出。
实施例4
传感装置5的一侧或者两侧设置有限位装置,限位装置能消除两荷载转换器3之间的间隙,保证测力装置在达到设定高程后,不会再次发生高度变化,所述限位装置为调节螺杆10,调节螺杆10与对应的荷载转换器3螺纹连接,步骤a2中,动力装置13促使两荷载转换器3之间相对远离后使得测力装置高度上升到设定高程,两荷载转换器3之间形成间隙,通过调节螺杆10将传感装置5调节到与荷载转换器3密贴,在释放动力装置13施加的水平或侧向力后,两荷载转换器3之间的传感装置5准确测出此时的水平或侧向力值。
实施例5
所述传感装置5与调节螺杆10之间设有锁定装置11,所述锁定装置11为钢板、型钢、圆钢、角钢、钢管或者混凝土块。锁定装置11的数量可根据现场实际情况选择适宜的数量,使得锁定装置11可调节,易于操作。
本实施例还有另一种结构,所述两荷载转换器3相对立的两端螺纹连接调节螺杆10,两调节螺杆10相对立的两端部之间分别串联锁定装置11,传感装置5设置于两锁定装置11之间。
实施例6
本实施例中,调节螺杆10一端或者两端与对应的荷载转换器3螺纹连接,传感装置5设置于两调节螺杆10之间或者串联在调节螺杆10自由端。
实施例7
所述传感装置5两端设有匹配的固定座12,固定座12位于传感装置5与限位装置之间,固定座12为一组或多组。即固定座12是可以分开的也可以是整体的,若是分开设置,则每个传感装置5对应一组固定座12,若是整体的,则是多个传感装置5共用一组固定座12。
实施例8
本实施例中,所述限位装置采用两楔形块14,两楔形块14的倾斜面相互匹配贴合,通过两楔形块14的相互滑动调节到传感装置5与荷载转换器3密贴,两楔形块14可以通过上、下相互滑动或者前、后相互滑动精准调节传感装置5与荷载转换器3之间的间隙,使得传感装置5与荷载转换器6密贴,利用楔形块14的杠杆原理,使得用较小的力(该力与两楔形块14相互滑动方向同向)就可以得到较大的横向力(该力为水平方向),从而达到传感装置5与荷载转换器13密贴的目的,使得调节速度更快,省时省力,在此基础上,还可以在两楔形块14上设置动力装置13,动力装置13输出端与其中一楔形块14端部接触,动力装置13固定端与另一楔形块14连接,通过动力装置13施加力,起到辅助的作用,同时动力装置13上还可以连接外部控制器,用以实现智能调节,更为高效快速。
在a2中,在释放动力装置13施加的水平或者侧向力后,上部构件(梁体)的竖向载荷完全作用于测力装置上,由于通过楔形块14将传感装置5与荷载转换器3调节到密贴,使得两荷载转换器3之间无间隙,测力装置在竖向载荷下,两荷载转换器3之间不会再次发生相对位移,此时调高装置的高度保持不变,两荷载转换器3之间传感装置5测出水平或者侧向力值更为准确。
实施例9
对于A1中的a1,本实施例采用另一种结构实现本发明方法,该实施例中支座芯体1与荷载转换器3的接触面为斜直面支座芯体1底面呈V形设置,荷载转换器3与下座板15的接触面为平面,多个传感装置5在水平方向位于荷载转换器3与下座板15的侧壁之间,下座板15采用盆腔结构,支座芯体1所受的竖 向力通过荷载转换器3分解出水平分量使得传感装置5受压,通过传感装置5记录此时的水平或者侧向力值。
在下座板15两侧壁上安装有动力装置13,动力装置13的输出端穿过下座板15的侧壁与传感装置5直接或间接接触,动力装置13施加水平力,使得传感装置5受压,动力装置13采用液压缸或者气压缸可以实现动力输出,两荷载转换器3相互靠近对支座芯体1产生顶升,记录下支座芯体1高度开始改变或者暂停改变时传感装置5所受水平力或者竖向力值。根据楔形荷载转换器3所受力的力学平衡关系,得出摩擦系数与荷载转换器3倾斜角度、水平力或侧向力的关系式,根据该关系式求解出摩擦系数值。
动力装置13的输出端与传感装置5之间设置荷载分布挡板17,动力装置13输出端与荷载分布挡板17侧面接触,传感装置5位于荷载分布挡板17与荷载转换器3之间,载荷分布挡板17可以减少动力装置13的使用数量,本实施例中设有三个传感装置5,采用三个动力装置13对应,也可以通过一个或者两个动力装置13对应三个传感装置5,荷载分布挡板17与下座板15侧壁之间安装可调限位块16。
实施例10
如图19所示,本实施例中,所述支座芯体放置在具有盆腔18结构的底盆内,支座芯体1与底盆18之间设有测力承载体19,测力承载体19侧面设有传感装置5,传感装置5的信号线穿过底盆18侧壁的安装孔与外部的数据采集系统20连接,数据采集系统20用于实施监测支撑装置竖向的承载力。传感装置5受到水平压力作用后产生的电信号通过无线或者有线网络传输给数据采集系统20收集分析处理测出荷载,通过在荷载转换器3上力学平衡分解,反向得到竖向载荷,达到测力的目的。数据采集系统20包括解调仪和计算机系统(公知技术),所述解调仪的输入端通过信号线与安装在测力承载体19上的传感装置5连接,解调仪的输出端通过无线网络或有线网络与计算机系统连接,所述计算机系统还设有实时监测及报警系统。通过采用信号线将传感装置5感知测力承载体19的压应力变化输出压力波长信号输送到解调仪上,解调仪经过对波长信号分析处理后经无线网络或有线网络传输到计算机系统处理后直观显示支座实际荷载并与支座正常使用荷载进行对比,出现异常时进行报警,以实现远距离对支座载荷进行 监测,实时采集支座的受力数据。
以上所述,仅是本发明的较佳实施例而已,并非对本发明作任何形式上的限制,依据本发明的技术实质,在本发明的精神和原则之内,对以上实施例所作的任何简单的修改、等同替换与改进等,均仍属于本发明技术方案的保护范围之内。
Claims (10)
- 基于准确测定摩擦系数的服役期桥梁测力支座标定方法,其特征在于,包括以下步骤:A1:记录测力装置所受的水平或侧向力值,该步骤中包括a1、a2和a3三种情况:a1:先记录测力装置顶升前传感装置(5)的水平力或侧向力值;然后通过动力装置(13)对测力装置上的两楔形的荷载转换器(3)施加水平或者侧向力,促使测力装置的高度改变,记录高度改变时或者暂停改变时传感装置(5)的水平或侧向力值;a2:先对测力装置上的两楔形的荷载转换器(3)施加水平或者侧向力,促使测力装置的高度改变,记录高度改变时或者暂停改变时传感装置(5)的水平或者侧向力值;然后精准调节两荷载转换器(3)之间的间隙,促使传感装置(5)与荷载转换器(3)密贴;再释放动力装置(13),记录此时两荷载转换器(3)之间传感装置(5)测出的水平或者侧向力值;a3:先对两楔形的荷载转换器(3)施加水平或者侧向力,促使测力装置的高度改变,记录高度改变时或者暂停改变时传感装置(5)的水平或侧向力值;然后减小对两楔形的荷载转换器(3)施加的水平或者侧向力值,促使测力装置的高度改变,记录高度改变时或者暂停改变时传感装置(5)的水平或侧向力值;A2:根据a1或a2或a3中荷载转换器所受力的力学平衡关系,得出摩擦系数与荷载转换器(3)倾斜角度、水平力或侧向力的关系式;A3:根据a1或a2或a3中记录的水平或侧向力值及A2中的关系式,求解出摩擦系数值。
- 根据权利要求1所述的基于准确测定摩擦系数的服役期桥梁测力支座标定方法,其特征在于,还包括步骤A4:根据荷载转换器(3)在a1或a2或a3中所受力的力学平衡关系,得出竖向力与荷载转换器(3)倾角、水平或者侧向力、摩擦系数的关系式,在结合A3中求出的摩擦系数值,准确求出测力装置的竖向力值。
- 根据权利要求1所述的基于准确测定摩擦系数的服役期桥梁测力支座标定方法,其特征在于,在a1和a2中,采用的测力装置包括上调节板(6)和下调节板(8),在上调节板(6)上方或者下调节板(8)下方设置支座芯体(1), 上调节板(6)底面设有调节腔(9),调节腔(9)内设置两个楔形的荷载转换器(3),两荷载转换器(3)之间设有一个或多个传感装置(5),测力装置上设置动力装置(13),动力装置(13)的输出端串联传感装置(5)后与其中一荷载转换器(3)侧部和/或端部接触,动力装置(13)的固定端与另一荷载转换器(3)侧部和/或端部连接,动力装置(13)输出水平或侧向力推动两荷载转换器(3)相互远离,使得上调节板(6)高度上升到设定高程时暂停动力输出,此时动力装置(13)施加的水平或侧向力值可以通过输出端串联的传感装置(5)直接测出。
- 根据权利要求3所述的基于准确测定摩擦系数的服役期桥梁测力支座标定方法,其特征在于,所述传感装置的一侧或两侧设置有限位装置,所述限位装置为调节螺杆(10),调节螺杆(10)与对应的荷载转换器(3)螺纹连接,步骤a2中,动力装置(13)促使两荷载转换器(3)之间相对远离后使得测力装置高度上升到设定高程,两荷载转换器(3)之间形成间隙,通过调节螺杆(10)将传感装置(5)调节到与荷载转换器(3)密贴,在释放动力装置(13)施加的水平或侧向力后,两荷载转换器(3)之间的传感装置(5)准确测出此时的水平或侧向力值。
- 根据权利要求3所述的基于准确测定摩擦系数的服役期桥梁测力支座标定方法,其特征在于,所述传感装置(5)与调节螺杆(10)之间设有锁定装置(11),所述锁定装置(11)为钢板、型钢、圆钢、角钢、钢管或者混凝土块。
- 根据权利要求3所述的基于准确测定摩擦系数的服役期桥梁测力支座标定方法,其特征在于,所述传感装置(5)两端设有匹配的固定座(12),固定座(12)位于传感装置(5)与限位装置之间,固定座(12)为一组或多组。
- 根据权利要求3所述的基于准确测定摩擦系数的服役期桥梁测力支座标定方法,其特征在于,所述限位装置为两楔形块(14),两楔形块(14)的倾斜面相互匹配贴合,两楔形块(14)的相互滑动将传感装置(5)调节到与荷载转换器(3)密贴。
- 根据权利要求1所述的基于准确测定摩擦系数的服役期桥梁测力支座标定方法,其特征在于,对于A1中的a1,通过另一种结构实现,测力装置包括支座芯体(1)、下座板(15)、两荷载转换器(3),支座芯体(1)底面与两荷 载转换器(3)顶面为斜直面或者柱面或者曲面接触,在水平方向位于荷载转换器(3)与下座板(15)的侧壁之间设有多个传感装置(5),通过传感装置(5)记录水平力或者侧向力值。
- 根据权利要求8所述的基于准确测定摩擦系数的服役期桥梁测力支座标定方法,其特征在于,所述下座板(15)两侧壁上安装动力装置(13),动力装置(13)的输出端穿过下座板(15)的侧壁与传感装置(5)直接或者间接接触,动力装置(13)施加水平力或侧向力,传感装置(5)受压,两荷载转换器(3)相互靠近对支座芯体(1)产生顶升,记录下支座芯体(1)高度开始改变或者暂停改变时传感装置(5)所受水平力或侧向力值,动力装置(13)的输出端与传感装置(5)之间设置荷载分布挡板(17),动力装置(13)输出端与荷载分布挡板(17)侧面接触,传感装置位于荷载分布挡板(17)与荷载转换器(3)之间,荷载分布挡板(17)与下座板(15)侧壁之间安装可调限位块(16)。
- 根据权利要求3所述的基于准确测定摩擦系数的服役期桥梁测力支座标定方法,其特征在于,所述支座芯体(1)放置在具有盆腔结构的底盆(18)内,支座芯体(1)与底盆(18)之间设有测力承载体(19),测力承载体(19)侧面设有传感装置(5),传感装置(5)通过信号线与外部的数据采集系统(20)连接。
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CN113155727A (zh) * | 2021-01-21 | 2021-07-23 | 成都济通路桥科技有限公司 | 一种支撑装置的摩擦系数的标定方法 |
CN115096486A (zh) * | 2022-05-07 | 2022-09-23 | 中交公路长大桥建设国家工程研究中心有限公司 | 一种测力与位移型摩擦摆支座及传感器更换方法 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2415054Y (zh) * | 2000-04-26 | 2001-01-17 | 黄茂忠 | 高度可调的测力钢支座 |
KR20060114589A (ko) * | 2005-05-02 | 2006-11-07 | (주)알티에스 | 구조물 인상장치 및 이를 이용한 높이 조절이 가능한교좌장치 |
CN102032959A (zh) * | 2010-11-23 | 2011-04-27 | 北京铁科首钢轨道技术有限公司 | 一种竖向智能测力支座 |
CN103790105A (zh) * | 2014-01-23 | 2014-05-14 | 河海大学 | 一种监控桥梁横向倾覆的盆式支座及系统 |
CN107941398A (zh) * | 2017-11-27 | 2018-04-20 | 苏州海德新材料科技股份有限公司 | 监测支座及智能监测系统 |
KR101987231B1 (ko) * | 2018-10-24 | 2019-06-10 | 김성원 | 마찰 진자 받침 |
CN112284612A (zh) * | 2020-10-23 | 2021-01-29 | 成都济通路桥科技有限公司 | 一种运营期支撑装置串联式标定方法及系统 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101154102B1 (ko) * | 2011-11-14 | 2012-06-11 | 조영철 | 하중 측정장치와 이를 이용한 구조물 지지장치 |
CN210288128U (zh) * | 2019-05-28 | 2020-04-10 | 中交上海航道局有限公司 | 桥梁临时承载装置 |
CN211395333U (zh) * | 2019-11-20 | 2020-09-01 | 北京铁科首钢轨道技术股份有限公司 | 一种竖向测力球型支座 |
-
2021
- 2021-03-18 JP JP2023548985A patent/JP2023547272A/ja active Pending
- 2021-03-18 WO PCT/CN2021/081402 patent/WO2022083054A1/zh active Application Filing
- 2021-03-18 US US18/033,348 patent/US20230393053A1/en active Pending
- 2021-03-18 EP EP21881480.4A patent/EP4206648A4/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2415054Y (zh) * | 2000-04-26 | 2001-01-17 | 黄茂忠 | 高度可调的测力钢支座 |
KR20060114589A (ko) * | 2005-05-02 | 2006-11-07 | (주)알티에스 | 구조물 인상장치 및 이를 이용한 높이 조절이 가능한교좌장치 |
CN102032959A (zh) * | 2010-11-23 | 2011-04-27 | 北京铁科首钢轨道技术有限公司 | 一种竖向智能测力支座 |
CN103790105A (zh) * | 2014-01-23 | 2014-05-14 | 河海大学 | 一种监控桥梁横向倾覆的盆式支座及系统 |
CN107941398A (zh) * | 2017-11-27 | 2018-04-20 | 苏州海德新材料科技股份有限公司 | 监测支座及智能监测系统 |
KR101987231B1 (ko) * | 2018-10-24 | 2019-06-10 | 김성원 | 마찰 진자 받침 |
CN112284612A (zh) * | 2020-10-23 | 2021-01-29 | 成都济通路桥科技有限公司 | 一种运营期支撑装置串联式标定方法及系统 |
Non-Patent Citations (1)
Title |
---|
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Publication number | Priority date | Publication date | Assignee | Title |
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CN113155727A (zh) * | 2021-01-21 | 2021-07-23 | 成都济通路桥科技有限公司 | 一种支撑装置的摩擦系数的标定方法 |
CN113155727B (zh) * | 2021-01-21 | 2023-02-14 | 成都济通路桥科技有限公司 | 一种支撑装置的摩擦系数的标定方法 |
CN115096486A (zh) * | 2022-05-07 | 2022-09-23 | 中交公路长大桥建设国家工程研究中心有限公司 | 一种测力与位移型摩擦摆支座及传感器更换方法 |
CN115096486B (zh) * | 2022-05-07 | 2023-10-27 | 中交公路长大桥建设国家工程研究中心有限公司 | 一种测力与位移型摩擦摆支座及传感器更换方法 |
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EP4206648A4 (en) | 2024-03-27 |
JP2023547272A (ja) | 2023-11-09 |
EP4206648A1 (en) | 2023-07-05 |
US20230393053A1 (en) | 2023-12-07 |
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