CN219161200U - Arch degree measuring device for prestressed concrete T-shaped beam - Google Patents
Arch degree measuring device for prestressed concrete T-shaped beam Download PDFInfo
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- CN219161200U CN219161200U CN202223451377.8U CN202223451377U CN219161200U CN 219161200 U CN219161200 U CN 219161200U CN 202223451377 U CN202223451377 U CN 202223451377U CN 219161200 U CN219161200 U CN 219161200U
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Abstract
The application discloses camber measuring device of prestressed concrete T-shaped beam, including measuring drawing device, measuring strutting arrangement, camber standard contrast template, measuring drawing device includes measuring head, drawing line pen, spring, measurement base, and measuring head upper portion is convex, and the left end sets up to the pointed end, and the right-hand member is provided with the recess and is convenient for insert drawing line pen, and spring both ends are fixed connection measuring head and measurement base respectively, and the bottom of measurement base sets up to the T type; the measuring support device comprises a drawing board clamping groove, a sliding rail, a telescopic bracket and bolts, wherein the T-shaped bottom of the measuring base is embedded into grooves on two sides of the sliding rail and can slide in the grooves; the standard contrast template of the camber is directly inserted into the drawing board clamping groove, and the standard red line of the camber is arranged on the standard contrast template for the qualification verification of the camber, and meanwhile, the template is provided with grids, so that the camber value can be accurately read. The camber curve of the actual T-shaped beam is drawn by the mapping device on the movable horizontal sliding rail, the measuring precision is high, the operation is simple, and the performance is reliable.
Description
Technical Field
The utility model relates to camber measurement of a beam, in particular to a camber measurement device of a prestressed concrete T-shaped beam, and belongs to the technical field of engineering.
Background
The bridge is urban life line engineering, has long operation period, and along with the continuation of the service time, continuous pressing of a moving load and a fixed load and aging phenomena of materials in different environments, so that the generation of beam slab concrete strain cracks becomes unavoidable, and serious safety accidents of vehicle destruction and human death caused by the fracture and collapse of bridge structures and components are extremely easy to be caused. In order to prevent the tensile stress, the downwarping and the strain cracking of the beam slab concrete caused by the combined action of the reciprocating load and the fixed load of the vehicle and the like after the bridge is put into operation, the scientific setting of the camber of the post-tensioned prestressed concrete T beam is particularly critical. Therefore, the camber also becomes an important standard for the quality safety check of the prestressed concrete T-shaped beam.
The current common mode is to check the camber by using a feeler gauge or a vernier caliper manually, and the method is complicated, low in checking precision and low in work efficiency.
Disclosure of Invention
The application improves the camber measurement mode of the existing prestressed concrete T-shaped beam, and discloses a camber measurement device of the prestressed concrete T-shaped beam, which draws an actual camber curve of the T-shaped beam through a measurement drawing device and compares the actual camber curve with a standard camber curve given by engineering to check whether the actual camber of the T-shaped beam meets engineering standards.
The camber curve of the actual T-shaped beam is drawn by the mapping device on the movable horizontal sliding rail, the measuring precision is high, the operation is simple, and the performance is reliable.
The technical scheme of the application is as follows:
the camber measuring device of the prestressed concrete T-shaped beam comprises a measuring and drawing device, a measuring and supporting device and a camber standard comparison template:
1. the measuring and drawing device comprises a measuring head 1, a line drawing pen 2, a spring 3 and a measuring base 4:
the upper part of the measuring head 1 is arc-shaped, the left end is provided with a tip so as to be conveniently inserted into a gap to be measured between the surface of the beam plate pedestal 12 and the bottom surface of the T-shaped beam 11, and the right end is provided with a groove so as to be conveniently inserted into the line drawing pen 2;
the line drawing pen 2 is inserted through a groove at the right end of the upper part of the measuring head 1 and can be replaced at any time;
the two ends of the spring 3 are respectively connected with the measuring head 1 and the measuring base 4, so as to ensure the up-and-down movement of the measuring head 1;
the bottom of the measuring base 4 is set to be T-shaped and is used for being connected with a measuring supporting device;
2. the measuring and supporting device comprises a drawing board clamping groove 5, a sliding rail 6, a telescopic bracket 7 and a bolt 8;
the drawing board clamping groove 5 is arranged on one side of the sliding rail 6, so that the standard contrast template with the arching degree can be conveniently placed in the drawing board clamping groove;
the middle parts of the two sides of the sliding rail 6 are provided with horizontal grooves which are matched with the T-shaped bottoms of the measuring base 4, and the T-shaped bottoms of the measuring base 4 are embedded into the grooves of the sliding rail 6 and can slide along the sliding rail in the grooves;
the telescopic brackets 7 are positioned at four corner points of the sliding rail 6 and used for adjusting the height of the sliding rail;
3. the standard contrast template 9 of the camber is directly inserted into the drawing board clamping groove 5, and the standard red line 10 of the camber is arranged on the standard contrast template for the qualification check of the camber, and meanwhile, the template is provided with a grid, so that the camber value can be accurately read.
Further, the top of the measuring base 4 of the measuring drawing device is empty, and the bottom end of the spring 3 is fixed inside the measuring base 4.
Further, the spring 3 of the measuring drawing device is connected with the measuring head 1 and the measuring base 4 in a welding mode.
Further, the springs of the measuring and drawing device are provided with three springs.
Further, the drawing board clamping groove 5 is arranged on one side of the sliding rail 6 in a welding mode.
Further, the bolts 8 are arranged at four corner points of the slide rail 6 in a welding mode, threads are arranged on the outer surface of the telescopic bracket 7, and the height of the slide rail 6 is adjusted by up-and-down rotation in the bolts 8.
Furthermore, the arching standard red lines are two red lines drawn on an arching standard comparison template in advance according to the maximum and minimum values of the actual engineering standard, and serve as comparison standards.
The beneficial effects of the utility model are mainly shown in the following steps:
(1) The device has the characteristics of simplicity in operation and high construction efficiency. The method for evaluating the camber of the beam slab by using the detection personnel of the current construction unit, the supervision company and the quality inspection supervision mechanism is characterized in that after the steel beam of the prestressed concrete beam slab is stretched, the spacing between the center point of the cambered surface of the pedestal surface of the beam slab and the center point of the cambered surface of the bottom surface of the T-shaped beam is measured and read by using a feeler gauge or a vernier caliper, and the reading is excessively complicated and has low verification efficiency and inaccuracy as a qualified basis for evaluating the camber of the T-shaped beam. The device only needs to move a measuring and drawing device on the horizontal sliding rail, automatically adjusts the height of the measuring head according to the actual arching value of the T-shaped beam, draws an arching curve of the actual T-shaped beam on the arching comparison template through a line drawing pen, and then compares the arching curve with the engineering standard arching to check whether the arching curve meets the engineering standard.
(2) The device has the characteristic of accurate measurement results. The conventional measuring and evaluating method in the construction site mainly reads the distance between the center point of the cambered surface of the pedestal and the center point of the cambered surface of the bottom of the beam slab, but in practice, the true value of the camber of the beam slab can only be obtained when the pre-camber of the pedestal of the bottom of the T-beam slab is set to zero, so that the camber is unqualified. The measuring and drawing device is mainly arranged on the horizontal sliding rail, so that interference of the beam slab pedestal pre-camber to a measuring result can be avoided, and a camber curve can be drawn more accurately and further checked whether the camber curve meets engineering standards.
(3) The device has the characteristics of strong applicability and cyclic utilization. The device occupies small space, is convenient to move, and can measure the arching heights of different positions by adjusting the measuring heights through the telescopic bracket. Meanwhile, arch degree verification can be carried out on the prestressed concrete T-shaped beams with different spans in the whole precast beam field, and the same arch degree standard comparison template can be adopted for the T-shaped beams with the same model batch, so that the utilization rate is high.
Drawings
FIG. 1 is a schematic view showing the overall structure of a camber measuring device of a prestressed concrete T-beam,
figure 2 is an enlarged detail view of the device shown,
figure 3 is a side view of the device shown,
figure 4 is a front view of the device shown,
figure 5 is a front view of the measurement mapping device,
figure 6 is a perspective view of the measurement mapping apparatus,
figure 7 is a schematic diagram of a standard comparative camber template,
figure 8 is a view of the installation of the device shown,
fig. 9 is a standard comparative template installation diagram.
Numerical marking: 1 is measuring head, 2 is drawing pen, 3 is the spring, 4 is measuring base, 5 is drawing board draw-in groove, 6 is the slide rail, 7 is the telescopic bracket, 8 is the bolt, 9 is the standard contrast template of camber, 10 is the standard red line of camber, 11 is T roof beam, 12 is the beam slab pedestal.
Detailed Description
The technical solutions provided in the present application will be further described below with reference to specific embodiments and accompanying drawings. The advantages and features of the present application will become more apparent in conjunction with the following description.
It should be noted that the embodiments of the present application are preferably implemented, and are not limited to any form of the present application. The technical features or combinations of technical features described in the embodiments of the present application should not be regarded as isolated, and they may be combined with each other to achieve a better technical effect. Additional implementations may also be included within the scope of the preferred embodiments of the present application, and should be understood by those skilled in the art to which the examples of the present application pertain.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative and not limitative. Thus, other examples of the exemplary embodiments may have different values.
The drawings in the present application are all in a very simplified form and are all to a non-precise scale for the purpose of conveniently and clearly facilitating the description of the embodiments of the present application and are not intended to limit the limitations that the present application may implement. Any structural modification, proportional change or size adjustment should fall within the scope of the technical disclosure disclosed herein without affecting the effects and objectives achieved by the present application. And the same reference numbers appearing in the drawings throughout the application denote the same feature or element, and may be used in different embodiments.
As shown in fig. 1 to 9, the camber measuring device for the prestressed concrete T-beam comprises a measuring and drawing device, a measuring and supporting device and a camber standard comparison template:
1. the measuring and drawing device comprises a measuring head 1, a line drawing pen 2, a spring 3 and a measuring base 4: the measuring head 1 is connected with the lower spring 3 in a welding mode, the upper part of the measuring head 1 is arc-shaped, the left end is provided with a tip so as to be conveniently inserted into a gap to be measured between the surface of the beam plate pedestal 12 and the bottom surface of the T-shaped beam 11, and the right end is provided with a groove so as to be conveniently inserted into the line drawing pen 2.
The line drawing pen 2 is inserted through a groove at the right end of the upper part of the measuring head 1 and can be replaced at any time.
The spring 3 connects the measuring head 1 and the measuring base 4 by means of welding, and the embodiment device is provided with 3 springs, ensuring the up-and-down movement of the measuring head 1.
And the bottom of the measuring base 4 is provided with a T shape and is used for being connected with the measuring supporting device, and the inside of the measuring base is connected with the spring 3 in a welding mode.
2. The measuring and supporting device comprises a drawing board clamping groove 5, a sliding rail 6, a telescopic bracket 7 and a bolt 8;
the drawing board clamping groove 5 is arranged on one side of the sliding rail 6 in a welding mode, so that the camber standard comparison template can be conveniently placed in the drawing board clamping groove;
the slide rail 6 is provided with horizontal grooves at the middle parts of two sides for placing a measuring and drawing device; the T-shaped bottom of the measuring base 4 is embedded into a groove of the sliding rail 6 and can slide along the sliding rail in the groove;
the telescopic brackets 7 are positioned at four corner points of the sliding rail 6 and used for adjusting the height of the sliding rail, and the appearance is provided with threads;
3. The standard contrast template 9 of the camber is directly inserted into the drawing board clamping groove 5, and the standard red line 10 of the camber is arranged on the standard contrast template for the qualification check of the camber, and meanwhile, the template is provided with a grid, so that the camber value can be accurately read; the arching standard red line 10 is two red lines drawn on the arching standard comparison template 9 in advance according to the maximum and minimum values of the actual engineering standard, and is used as a comparison standard.
Examples
(1) And (5) installing the device. As shown in fig. 8, the camber checking device of the prestressed concrete T-shaped beam is arranged on the side surface of the beam slab pedestal 12 at the bottom of the prestressed concrete T-shaped beam 11 to be measured, the bases of the telescopic brackets 7 positioned at the four corner points of the device are fixed on the ground, the height of the sliding rail 6 is adjusted by the up-and-down rotation of the telescopic brackets 7 in the bolts 8, the tip of the left side of the measuring head 1 is inserted into the gap between the surface of the beam slab pedestal and the bottom surface of the T-shaped beam, and meanwhile, the same heights of the elevations at the two sides of the sliding rail 6 corresponding to the two sides of the T-shaped beam 11 are ensured, so that the accurate and reliable effect of the measurement and drawing results is achieved.
(2) And (5) installing a template. As shown in fig. 9, according to the standard arching value corresponding to the engineering, the standard arching red line 10 is drawn on the standard arching comparison template 9, the standard arching comparison template 9 with the standard arching red line 10 drawn is vertically inserted into the drawing board clamping grooves 5 at two ends of one side of the sliding rail 6, and the drawing pen 2 is placed at the right groove at the upper part of the measuring head 1, so that the drawing pen 2 is tightly attached to the standard arching comparison template 9, and the effect that the drawn actual arching curve is clear and complete is achieved.
(3) And (5) camber checking. After the installation is completed, the measuring device on the sliding rail 6 is moved, the measuring head 1 moves up and down according to the actual arching value by means of the spring 3, the actual arch curve of the prestressed concrete T-shaped beam is drawn on the arch standard comparison template 9, the drawn curve is compared with the standard red line 10 on the arch standard comparison template 9, and if the arch accords with the standard within the standard red line range. Meanwhile, the camber value can be rapidly and accurately read by means of the camber standard and the grids arranged on the template 9, so that engineering data can be recorded conveniently.
The above description is merely illustrative of the preferred embodiments of the present application and is not intended to limit the scope of the present application in any way. Any alterations or modifications of the above disclosed technology by those of ordinary skill in the art should be considered equivalent and valid embodiments, which fall within the scope of the present application.
Claims (7)
1. The camber measuring device of the prestressed concrete T-shaped beam is characterized by comprising a measuring and drawing device, a measuring and supporting device and a camber standard comparison template:
1. the measuring and drawing device comprises a measuring head (1), a line drawing pen (2), a spring (3) and a measuring base (4):
the upper part of the measuring head (1) is arc-shaped, the left end is provided with a tip so as to be conveniently inserted into a gap to be measured between the surface of the beam plate pedestal (12) and the bottom surface of the T-shaped beam (11), and the right end is provided with a groove so as to be conveniently inserted into the line drawing pen (2);
the line drawing pen (2) is inserted through a groove at the right end of the upper part of the measuring head (1);
two ends of the spring (3) are respectively connected with the measuring head (1) and the measuring base (4) to ensure the up-and-down movement of the measuring head (1);
the bottom of the measuring base (4) is T-shaped and is used for being connected with the measuring supporting device;
2. the measuring and supporting device comprises a drawing board clamping groove (5), a sliding rail (6), a telescopic bracket (7) and a bolt (8);
the drawing board clamping groove (5) is arranged on one side of the sliding rail (6) so as to be convenient for placing the camber standard comparison template;
the middle parts of the two sides of the sliding rail (6) are provided with horizontal grooves which are matched with the T-shaped bottoms of the measuring base (4), and the T-shaped bottoms of the measuring base (4) are embedded into the grooves of the sliding rail (6) and can slide along the sliding rail in the grooves;
the telescopic brackets (7) are positioned at four corner points of the sliding rail (6) and are used for adjusting the height of the sliding rail;
bolts (8) are arranged at four corner points of the sliding rail (6) and used for fixing the telescopic bracket (7);
3. the standard contrast template (9) of the arching degree is directly inserted into the drawing board clamping groove (5), the standard red line (10) of the arching degree is arranged on the standard contrast template for the qualified verification of the arching degree, and meanwhile, the template is provided with grids for accurately reading the arching value.
2. The camber measuring device of the prestressed concrete T-beam according to claim 1, wherein the top of the measuring base (4) of the measuring drawing device is hollow, and the bottom end of the spring (3) is fixed inside the measuring base (4).
3. The camber measuring device of a prestressed concrete T-beam according to claim 1, wherein the spring (3) of the measuring and drawing device connects the measuring head (1) and the measuring base (4) by means of welding.
4. The camber measuring device of a prestressed concrete T-beam according to claim 1, wherein the springs of the measuring and mapping device are provided with three.
5. The camber measuring device of a prestressed concrete T-beam according to claim 1, wherein the drawing board clamping groove (5) is arranged at one side of the slide rail (6) by means of welding.
6. The camber measuring device of a prestressed concrete T-beam according to claim 1, wherein the bolts (8) are arranged at four corner points of the slide rail (6) by means of welding, the telescopic bracket (7) is externally provided with threads, and the height of the slide rail (6) is adjusted by rotating up and down in the bolts (8).
7. The camber measuring device of the prestressed concrete T-beam according to claim 1, wherein the camber standard red line is two red lines drawn on a camber standard comparison template in advance according to the maximum and minimum values of the actual engineering standard as a comparison standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223451377.8U CN219161200U (en) | 2022-12-22 | 2022-12-22 | Arch degree measuring device for prestressed concrete T-shaped beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223451377.8U CN219161200U (en) | 2022-12-22 | 2022-12-22 | Arch degree measuring device for prestressed concrete T-shaped beam |
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| Publication Number | Publication Date |
|---|---|
| CN219161200U true CN219161200U (en) | 2023-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223451377.8U Active CN219161200U (en) | 2022-12-22 | 2022-12-22 | Arch degree measuring device for prestressed concrete T-shaped beam |
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| CN (1) | CN219161200U (en) |
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