桥梁支座的变形测量装置
The bridge bearing deformation measurement device, which combines a protractor and a rod structure, solves the problems of low accuracy in shear deformation measurement and high cost due to complex equipment, and achieves efficient and accurate deformation measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- EAST CHINA JIAOTONG UNIVERSITY
- Filing Date
- 2025-10-13
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, the measurement accuracy of shear deformation of bridge bearings is poor, and the measurement devices are complex and costly.
By employing a combination structure of a protractor, a reference indicator rod, a rotating connecting rod, and an indicator slide rod, and utilizing the geometric principles of parallelograms and similar triangles, the accurate measurement of the shear deformation angle of bridge supports is achieved, simplifying the structure of the measuring device and reducing costs.
It improves the accuracy and reliability of bridge bearing deformation measurement, simplifies the measurement process, reduces costs, and is suitable for various field measurement environments.
Smart Images
Figure CN224517644U_ABST
Abstract
Claims
1. A deformation measuring device for a bridge support, characterized by, include: Protractor; A reference indicator rod is perpendicular to the protractor, and the center line of the reference indicator rod passes through the center point of the protractor. One end of the reference indicator rod is connected to the protractor, and the other end is used to align the contact point between the bridge bearing and the pad stone. A first rotating link, one end of which is rotatably connected to the protractor, the axis of rotation of which passes through the center point of the protractor, so that the first rotating link can indicate the angle between the first rotating link and the straight side of the protractor on the protractor. The first indicator slide bar is parallel to the reference indicator bar. One end of the first indicator slide bar is slidably connected to the first rotating link, and the other end is used to align with the support corner point of the bridge support. The first indicator slide bar can slide along the length direction of the first rotating link so that the position of the first indicator slide bar on the first rotating link is adjustable. After the reference indicator rod is aligned with the contact point between the bridge bearing and the pad stone, and the first indicator slide rod is aligned with the bearing corner point of the bridge bearing, the angle indicated by the first rotating connecting rod on the protractor is the shear deformation angle of the bridge bearing.
2. The deformation measuring device for a bridge support according to claim 1, wherein The deformation measuring device for the bridge bearing further includes a first ruler, the long side of which abuts against the straight side of the protractor, the zero mark of the first ruler and the center point of the protractor being on the same straight line, the first ruler being used to measure the lateral distance between the first indicator slide and the center point of the protractor, the lateral distance between the first indicator slide and the center point of the protractor being the horizontal shear deformation value of the bridge bearing.
3. The deformation measuring device for a bridge support according to claim 2, wherein The deformation measuring device for the bridge bearing also includes a slider, which is perpendicular to the first ruler and the first indicator slider. One end of the slider is slidably connected to the first ruler, and the slider can slide along the first ruler to abut against the first indicator slider, so that the slider can indicate the projection position of the first indicator slider on the first ruler.
4. The deformation measuring device for a bridge support according to claim 3, wherein The slider is a ruler, and the zero mark of the slider is on the same straight line as the center point of the protractor. When the slider abuts against the first indicator rod, the slider is used to measure the vertical distance between the first indicator rod and the center point of the protractor. The vertical distance between the first indicator rod and the center point of the protractor is the height of the bridge support's free-floating position.
5. The deformation measuring device for a bridge support according to claim 4, wherein The deformation measuring device for the bridge bearing further includes a second rotating link and a second indicating slide rod. One end of the second rotating link is rotatably connected to the protractor, and the rotation axis of the second rotating link passes through the center point of the protractor. The second indicator slide bar is parallel to the reference indicator bar. One end of the second indicator slide bar is slidably connected to the second rotating link, and the other end is used to align the contact point between the bridge support and the main beam. The second indicator slide bar can slide along the length of the second rotating link so that the position of the second indicator slide bar on the second rotating link is adjustable. When the slider abuts against the second indicator slider, the slider is used to measure the vertical distance between the center point of the second indicator slider and the protractor. The vertical distance between the center point of the second indicator slider and the protractor is the total height of the bridge support.
6. The deformation measuring device for a bridge support according to claim 5, wherein The lengths of the reference indicator rod, the first indicator slide rod, and the second indicator slide rod are adjustable.
7. The deformation measuring device for a bridge support according to claim 1, wherein The deformation measuring device for the bridge bearing further includes an adjustable first fastener connected to the first indicator slide rod to move with the first indicator slide rod. The first fastener is used to fix the first indicator slide rod to the first rotating link after the first indicator slide rod is aligned with the bearing corner point of the bridge bearing.
8. The deformation measuring device for a bridge support according to claim 5, wherein The deformation measuring device for the bridge bearing also includes an adjustable second fastener connected to the second indicator slide rod to move with the second indicator slide rod. The second fastener is used to fix the second indicator slide rod to the second rotating link after the second indicator slide rod is aligned with the contact point between the bridge bearing and the main beam.
9. The deformation measuring device for a bridge support according to claim 3, wherein The deformation measuring device for the bridge bearing further includes a second ruler, which is parallel to the first ruler. The end of the slider away from the first ruler is slidably connected to the second ruler. The zero mark of the second ruler is on the same straight line as the center point of the protractor. The slider can slide along the second ruler until it abuts against the first indicator rod, so that the slider can indicate the projection position of the first indicator rod on the second ruler. The second ruler is used to measure the lateral distance between the first indicator rod and the center point of the protractor.
10. The deformation measuring device for a bridge support according to claim 9, wherein The deformation measuring device for the bridge bearing also includes a fixed bracket, on which both the first ruler and the second ruler are mounted.