Device for bridge support horizontal measurement and application method
阅读说明：本技术 一种用于桥梁支座水平测量的装置及应用方法 (Device for bridge support horizontal measurement and application method ) 是由 李彦春 唐先习 吴相龙 牛莉 王兴红 单益军 独云龙 王文远 于 2020-08-25 设计创作，主要内容包括：一种用于桥梁支座水平测量的装置及应用方法,包括测针、水平横杆、水平伸缩尺、竖杆、竖向伸缩尺、旋紧内锁、底座板、圆形水准泡以及三个旋转脚螺旋。调整脚螺旋可使圆形水准泡居中,底板座水平。竖杆与底座板上表面相垂直,竖向伸缩尺可以沿竖杆轴向伸缩,从而调整水平横杆的高度。水平横杆可沿竖向伸缩尺的顶部旋转,同时水平伸缩尺可沿水平横杆轴向伸缩,从而调整测针的位置。方法步骤为：(1)在下支座板的一个角外侧架设测量装置；(2)测量相近的3个角的高差；(3)在另一个角外侧测出第4个角与相近角的高差；(4)按高差将下支座板的水平进行调整；(5)反复测量和调整,直至下支座板高差满足要求；(6)将下支座板固定。(A device for bridge support horizontal measurement and an application method thereof comprise a measuring pin, a horizontal cross rod, a horizontal telescopic ruler, a vertical rod, a vertical telescopic ruler, a screwing inner lock, a base plate, a circular level bubble and three rotating foot screws. The round level bubble can be centered and the bottom plate seat can be leveled by adjusting the foot screw. The vertical rod is perpendicular to the upper surface of the base plate, and the vertical telescopic ruler can axially extend and retract along the vertical rod, so that the height of the horizontal cross rod is adjusted. The horizontal cross rod can rotate along the top of the vertical telescopic ruler, and meanwhile, the horizontal telescopic ruler can axially extend along the horizontal cross rod, so that the position of the measuring needle is adjusted. The method comprises the following steps: (1) a measuring device is erected outside one corner of the lower support plate; (2) measuring the height difference of the similar 3 angles; (3) measuring the height difference between the 4 th angle and the similar angle outside the other angle; (4) adjusting the level of the lower support plate according to the height difference; (5) repeatedly measuring and adjusting until the height difference of the lower support plate meets the requirement; (6) and fixing the lower support plate.)
1. The utility model provides a device for bridge beam supports horizontal measurement, includes measuring pin (1), horizontal pole (2), horizontal telescopic ruler (3), montant (4), vertical telescopic ruler (5), internal lock (6), bed plate (7) screw, circular air level (8), three rotation foot spiral (9), its characterized in that: the point of the measuring needle (1) is a semi-spherical probe, the root of the measuring needle is fixedly connected with the horizontal telescopic ruler (3), the axis of the measuring needle (1) is vertical to the axis of the horizontal telescopic ruler (3), the horizontal telescopic ruler (3) can stretch along the horizontal cross rod (2), and the axis of the horizontal telescopic ruler (3) is parallel to the axis of the horizontal cross rod (2).
2. The device for bridge deck leveling of claim 1, wherein: horizontal pole (2) and vertical telescopic ruler (5) are linked together through vertical axis (10), and the axis of horizontal pole (2) is perpendicular with the axis of vertical telescopic ruler (5), and horizontal pole (2) can rotate around vertical axis (10) on the vertical leveling ruler (5) simultaneously.
3. The device for bridge deck leveling of claim 1, wherein: the vertical telescopic ruler (5) is arranged on the vertical rod (4), can be stretched according to the measurement requirement and can be fixed by screwing the inner lock (6); the vertical rods (4) are fixedly connected with the base plate (7), and the longitudinal axes of the vertical rods (4) are vertical to the upper surface of the base plate (7); the base plate (7) is a circular plate, and the lower part of the base plate (7) is provided with three foot screws (9).
4. The device for bridge deck leveling of claim 1, wherein: the height difference between the two angles of the lower support plate (11) is determined according to the following formula:
Δh ij =h j -h i
in the formula:h i -ithe numerical value is read by a point, and then,irepresentsa、b、c、dAny point in;
h j -jthe numerical value is read by a point, and then,jrepresentsa、b、c、dIniAny point other than the point;
Δh ij -i、jthe difference in height between the two points.
5. The device for bridge deck leveling of claim 1, wherein: the inclination angle of each side of the lower support plate (11) is determined according to the following formula:
α ij =arcsin（|h ij |/l ij ）
in the formula:α ij lower support ledgeijThe angle of inclination of the direction;
h ij on the lower support platei、jThe height difference of the two points;
l ij on the lower support platei、jThe slope distance of the two points.
6. The method for using the device for measuring the bridge bearing level of claim 1 is characterized by comprising the following steps:
step (1), erecting measuring equipment in an area A of a lower support plate (11) facing the outer side of an angle a of a middle side of a bridge span, and adjusting three foot screws (9) to enable bubbles of a circular level bubble (8) to be centered;
step (2) rotating the horizontal cross rod (2), adjusting the elongation of the horizontal telescopic ruler (3) and the vertical telescopic ruler (5) to enable the measuring pins (1) to be respectively contacted with the lower support plated、a、bThree corners and respectively recording the reading values of the three pointsh d 、h a 、h b (ii) a Calculating the height difference Deltah da =h a -h d ，Δh ab =h b -h a ；
Step (3) erecting the measuring equipment on the side, facing the middle of the bridge span, of the lower support plate (11)bOutside the cornerBMeasuring the height difference delta by performing the same operation as the steps (1) and (2)h bc =h c -h b ；
Adjusting the heights of four corners of the lower support plate (11), and measuring the heights of the corners after adjustment to ensure that the height difference limit values of the four corners of the lower support plate (11) 4 meet the standard requirement; and then, pouring mortar at the bottom of the lower support plate (11), fixing the lower support plate (11), and carrying out the next step after the strength of the mortar reaches a design value.
Technical Field
The invention relates to a bridge bearing horizontal measurement technology.
Background
The bridge support is an important structural component for connecting an upper structure and a lower structure of a bridge, and can transfer stress and deformation of the upper structure of the bridge to the lower structure of the bridge. The railroad bridge generally selects a steel support, and a lower support plate of the steel support is a steel plate. The lower support plate is provided with a connecting bolt hole which can be connected with a support cushion through the connecting bolt. During the process of setting the support, the lower support plate may be inclined for various reasons, so that the whole support is inclined. The tilting of the support can cause the following problems: the tetrafluoroethylene sheet in the support cracks and deteriorates early, which affects the strength reserve of the support and thus damages the support. And (II) the inclination of the support will cause the uneven stress of the bridge support to cause the bias of the support, which directly influences the service life of the bridge and the safety of the bridge structure. Therefore, the inclination of the lower seat plate must be measured during the seat mounting process to ensure the level of the lower seat plate.
The current measurement of the inclination of the lower bearing plate mainly uses a level ruler. The new version of the test marks that the height difference limit value of the four corners of the lower support plate of the support is 2mm, and the height of each end of the lower support plate can only be roughly measured by using a level ruler, but the inclination and the height difference of the two ends of the lower support plate can not be accurately measured. When the lower support plate of the support needs to be adjusted horizontally, repeated adjustment and repeated measurement are needed, so that the operation is very troublesome, and the reading cannot be conveniently carried out mainly due to the narrow space from the bottom surface of the beam to the top of the bridge abutment. Meanwhile, other measuring facilities are difficult to implement due to the small space. Therefore, a facility and a measuring method capable of accurately measuring the height difference of the horizontal and the four corners of the lower support plate are urgently needed at the present stage.
Disclosure of Invention
The invention aims to provide a device for bridge bearing horizontal measurement and an application method.
The invention relates to a device for horizontally measuring a bridge support and an application method thereof, and the device for horizontally measuring the bridge support comprises a measuring needle 1, a
The invention discloses an application method of a device for measuring the bridge bearing level, which comprises the following steps:
step (1), erecting measuring equipment in an area A of a lower support plate 11, which faces the outer side of an angle a of one side of a bridge span, and adjusting three
step (2) rotating the
Step (3) erecting the measuring equipment on the side of the lower support plate 11 facing the middle of the bridge spanbOutside the cornerBMeasuring the height difference delta by performing the same operation as the steps (1) and (2)h bc =h c -h b ；
Adjusting the heights of four corners of the lower support plate 11, and measuring the heights of the corners after adjustment to ensure that the height difference limit value of the 114 corners of the lower support plate meets the standard requirement; and then, pouring mortar at the bottom of the lower support plate 11, fixing the lower support plate 11, and carrying out the next step after the strength of the mortar reaches a design value.
The invention has the beneficial effects that: can the accurate discrepancy in elevation of measuring four angles of undersetting board to can obtain the inclination of undersetting board, so that carry out the adjustment of undersetting board height in the work progress, thereby guarantee the level of undersetting board, avoid the disease because the slope of undersetting board and lead to. The structure form of this patent is fairly simple, and the practicality is strong, can not produce environmental pollution moreover, and economic benefits is showing, has fine using value.
Drawings
FIG. 1 is an elevational view of a measuring device; FIG. 2 is a top view of the measuring device; fig. 3 is a view showing a step height measurement position layout of the lower shoe plate corner.
Detailed Description
The invention relates to a device for horizontally measuring a bridge support and an application method thereof, and the device for horizontally measuring the bridge support comprises a measuring needle 1, a
Above a device for bridge beam supports level (l) survey,
According to the device for the horizontal measurement of the bridge bearing, the vertical telescopic ruler 5 is arranged on the vertical rod 4, can be stretched according to the measurement requirement and can be fixed by screwing the inner lock 6; the vertical rod 4 is fixedly connected with the base plate 7, and the longitudinal axis of the vertical rod 4 is vertical to the upper surface of the base plate 7; the base plate 7 is a circular plate, and three
In the above-mentioned device for measuring the bridge bearing level, the height difference between two corners of the lower bearing plate 11 is determined according to the following formula:
Δh ij =h j -h i
in the formula:h i -ithe numerical value is read by a point, and then,irepresentsa、b、c、dAny point in;
h j -jthe numerical value is read by a point, and then,jrepresentsa、b、c、dIniAny point other than the point;
Δh ij -i、jthe difference in height between the two points.
In the above-mentioned device for the horizontal measurement of the bridge bearing, the inclination angle of each side of the lower bearing plate 11 is determined according to the following formula:
α ij =arcsin（|h ij |/l ij ）
in the formula:α ij lower support ledgeijThe angle of inclination of the direction;
h ij on the lower support platei、jThe height difference of the two points;
l ij on the lower support platei、jThe slope distance of the two points.
The invention discloses an application method of a device for measuring the bridge bearing level, which comprises the following steps:
step (1), erecting measuring equipment in an area A of a lower support plate 11, which faces the outer side of an angle a of one side of a bridge span, and adjusting three
step (2) rotating the
Step (3) erecting the measuring equipment on the side of the lower support plate 11 facing the middle of the bridge spanbOutside the cornerBMeasuring the height difference delta by performing the same operation as the steps (1) and (2)h bc =h c -h b ；
Adjusting the heights of four corners of the lower support plate 11, and measuring the heights of the corners after adjustment to ensure that the height difference limit value of the 114 corners of the lower support plate meets the standard requirement; and then, pouring mortar at the bottom of the lower support plate 11, fixing the lower support plate 11, and carrying out the next step after the strength of the mortar reaches a design value.
The invention is further developed with reference to the following drawings: as shown in fig. 1 and 2, the device for measuring the bridge support horizontally comprises a measuring pin 1, a
As shown in fig. 1, the
As shown in fig. 1, the vertical telescopic ruler 5 is installed on the vertical rod 4, can be extended and retracted according to the measurement requirement, and can be fixed by screwing the inner lock 6. The vertical rod 4 is fixedly connected with the base plate 7, and the longitudinal axis of the vertical rod 4 is vertical to the upper surface of the base plate 7.
As shown in fig. 2 and 3, the base plate 7 is a circular plate, and three
As shown in fig. 2 and 3, when measuring, a measuring device can be erected firstly, the
As shown in fig. 3, the height difference between the two corners of the lower seat plate 11 can be calculated as follows:
Δh ij =h j -h i
in the formula:h i -ithe numerical value is read by a point, and then,irepresentsa、b、c、dAny point in;
h j -jthe numerical value is read by a point, and then,jrepresentsa、b、c、dIniAny point other than the point;
Δh ij -i、jthe difference in height between the two points.
The inclination angle of each side of the lower support plate 11 can be calculated according to the following formula:
α ij =arcsin（|h ij |/l ij ）
in the formula:α ij lower support ledgeijThe angle of inclination of the direction;
h ij on the lower support platei、jThe height difference of the two points;
l ij on the lower support platei、jThe slope distance of the two points.
- 上一篇：一种医用注射器针头装配设备
- 下一篇：大型天线机械指向精度测量方法