CN211978309U - Longitudinal reaction frame for prefabricated pier stress test - Google Patents
Longitudinal reaction frame for prefabricated pier stress test Download PDFInfo
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- CN211978309U CN211978309U CN202020920976.1U CN202020920976U CN211978309U CN 211978309 U CN211978309 U CN 211978309U CN 202020920976 U CN202020920976 U CN 202020920976U CN 211978309 U CN211978309 U CN 211978309U
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Abstract
The utility model discloses a longitudinal reaction frame for a prefabricated pier stress test, which comprises a bottom surface frame, wherein four corners of the bottom surface frame are respectively provided with an oblique supporting beam, and the four oblique supporting beams are symmetrically arranged to form a trapezoidal structure; the top surface of the bottom surface frame is upwards fixedly connected with four steel upright columns, the four steel upright columns are centrosymmetrically distributed by taking the center of the bottom surface frame as the center, and the top of each steel upright column is fixedly connected with the top of the corresponding oblique supporting beam; a plurality of layers of middle supporting beams are arranged between every two adjacent steel upright columns, the heights of the four middle supporting beams on the same layer are the same, and the middle supporting beams are detachably connected with the corresponding steel upright columns; an operation platform is laid between the four middle supporting beams on each layer; the side surface of each middle supporting beam is provided with a test preformed hole; the longitudinal reaction frame further comprises a pre-pressing block placed on the bottom surface frame. The utility model discloses a vertical reaction frame simple structure can provide vertical horizontal force for the prefabricated pier stress test.
Description
Technical Field
The utility model relates to a prefabricated pier technical field especially relates to a prefabricated pier is vertical reaction frame for force test.
Background
Viaducts are overpasses, in particular overpasses which are placed on a series of narrow reinforced concrete or masonry arches and have high-support towers or pillars to cross valleys, rivers, roads or other low obstacles, and after the urban development, the viaducts are crowded, the buildings are dense, the streets are difficult to widen, and the viaducts can be evacuated to achieve high traffic density and high transportation efficiency.
In addition, the highway or railway between cities can be used without embankments in order to avoid crossing with other line planes, save land and reduce subgrade settlement in some areas.
Because the elevated terrain and the line shape among cities are complex and the width of the road end face is constantly changed, the piers elevated in the cities are generally cast in situ, however, because the cast-in-situ piers not only have long consumption period and large influence on the surrounding environment, but also have the defects of unstable quality and high cost, people adopt the prefabricated piers to construct the bridge.
After the prefabricated bridge pier is assembled, a stress test must be carried out firstly, the maximum longitudinal horizontal force which can be borne by the prefabricated bridge pier is tested, the earthquake resistance of the prefabricated bridge pier is evaluated, and whether the prefabricated bridge pier can be put into use or not is determined.
Disclosure of Invention
In view of the above existing problems, the present invention aims to provide a longitudinal reaction frame, which can provide a longitudinal horizontal force with a ratio of 1:1 for a prefabricated pier stress test.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a prefabricated pier is longitudinal reaction frame for force test which characterized in that: the device comprises a bottom surface frame, wherein four corners of the bottom surface frame are respectively provided with an oblique supporting beam, and the four oblique supporting beams are symmetrically arranged to form a trapezoidal structure;
the top surface of the bottom surface frame is upwards fixedly connected with four steel upright columns, the four steel upright columns are centrosymmetrically distributed by taking the center of the bottom surface frame as the center, and the top of each steel upright column is fixedly connected with the top of the corresponding oblique supporting beam;
a plurality of layers of middle supporting beams are arranged between every two adjacent steel upright columns, the height of the four middle supporting beams on the same layer is the same, and the middle supporting beams are fixedly connected with the corresponding steel upright columns; an operation platform for workers to operate and place test equipment is laid between the four middle supporting beams on each layer;
a test preformed hole is formed in the side face of each middle supporting beam;
the longitudinal reaction frame further comprises a pre-pressing block placed on the bottom surface frame.
Furthermore, the bottom surface frame comprises four transverse supporting beams and four longitudinal supporting beams, the transverse supporting beams and the longitudinal supporting beams are uniformly distributed and are mutually perpendicular and crossed to form a nine-grid structure, and the four steel upright columns are arranged at four corners of one grid in the middle of the nine-grid structure.
Furthermore, the transverse supporting beam, the longitudinal supporting beam and the middle supporting beam are connected with the corresponding steel upright posts through high-strength bolts with the diameter of 30 mm.
Furthermore, the oblique supporting beam, the steel upright post, the transverse supporting beam, the longitudinal supporting beam and the middle supporting beam are all made of double 80H-shaped steel.
Furthermore, an upturning beam is arranged at the center of the nine-square lattice structure and is fixedly connected with two corresponding transverse supporting beams;
an upturning beam is also fixedly connected between the middle supporting beams at the topmost layer and is positioned at the top of the corresponding operation platform;
the middle support beams of the other layers are fixedly connected with a downward turning beam which is positioned at the bottom of the corresponding operation platform; the upturning beam and the downturning beam are arranged in parallel.
Furthermore, each of the upturning beam and the downturning beam is also provided with a test preformed hole.
Furthermore, the downward turning beam and the corresponding middle supporting beam, and the upward turning beam and the corresponding middle supporting beam or transverse supporting beam are connected by adopting high-strength bolts with the diameter of 30 mm.
Further, the weight of the pre-pressing block is more than or equal to 500 t.
The utility model has the advantages that: compared with the prior art, the utility model has the improvement that,
1. the utility model discloses a vertical counterforce frame is equipped with experimental preformed hole on the intermediate strut beam, adopts steel strand wires to pass experimental preformed hole on the prefabricated pier bent cap and the experimental preformed hole on the vertical counterforce frame, links to each other prefabricated pier and vertical counterforce frame to respectively place a center-penetrating jack at steel strand wires both ends, thereby carry out the vertical horizontal force test of prefabricated pier.
2. The longitudinal reaction frame of the utility model has simple structure, and the overall stability of the longitudinal reaction frame is good by arranging the oblique supporting beam, the upturning beam, the downturning beam and the prepressing block at the bottom;
3. the utility model discloses a vertical counterforce frame has all laid the operation platform between each layer intermediate strut roof beam, is applicable to not the prefabricated pier atress test of co-altitude.
4. The utility model discloses a vertical counterforce frame also is provided with experimental preformed hole on turning over the roof beam on and turning over the roof beam down, according to the height of prefabricated pier, turns over the roof beam at last or turns over the high department that experimental preformed hole corresponds on the roof beam down and hang the hanging flower basket, places the jack in the hanging flower basket, also can realize carrying out the force test to prefabricated pier.
Drawings
FIG. 1 is a front view of the longitudinal reaction frame structure of the present invention;
fig. 2 is a side view of a longitudinal reaction frame structure according to an embodiment of the present invention;
FIG. 3 is a top view of the bottom frame of the longitudinal reaction frame of the present invention;
FIG. 4 is a top view of the longitudinal reaction frame structure of the present invention;
fig. 5 is a side view of a longitudinal reaction frame structure in the second embodiment of the present invention.
Wherein: 1-bottom surface frame, 11-transverse supporting beam, 12-longitudinal supporting beam, 2-oblique supporting beam, 3-steel upright post, 4-middle supporting beam, 41-upward turning beam, 42-downward turning beam, 5-operation platform, 6-test preformed hole and 7-prepressing block.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following describes the technical solution of the present invention with reference to the accompanying drawings and embodiments.
The first embodiment is as follows:
referring to the attached drawings 1-4, the longitudinal reaction frame for the stress test of the prefabricated pier comprises a bottom surface frame 1, four transverse supporting beams 11 and four longitudinal supporting beams 12, wherein the transverse supporting beams 11 and the longitudinal supporting beams 12 are uniformly distributed and are mutually perpendicular and crossed to form a nine-square-grid structure; the transverse supporting beam 11 and the corresponding longitudinal supporting beam 12 are connected by high-strength bolts with the diameter of 30 mm. The bottom surface frame 1 is composed of eight double-spliced 80H-shaped steel.
Furthermore, four corners of the bottom surface frame 1 are respectively connected with an inclined supporting beam 2 through bolts, the four inclined supporting beams 2 have the same inclination angle, and the four inclined supporting beams 2 are symmetrically arranged to form a trapezoidal structure; four corners of one lattice in the middle of the nine-square lattice structure of the bottom surface frame 1 are vertically and upwards connected with steel upright posts 3, and the four steel upright posts 3 and corresponding transverse supporting beams 11 and longitudinal supporting beams 12 are also connected by high-strength bolts with the diameter of 30 mm; and the top of each steel upright column 3 and the top of the corresponding inclined supporting beam 2 are also connected and fixed by high-strength bolts with the diameter of 30 mm.
Furthermore, a plurality of layers of middle supporting beams 4 are arranged between every two adjacent steel upright columns 3, and the heights of the four middle supporting beams 4 on the same layer are the same, so that a square structure is formed; the middle support beam 4 is connected with the corresponding steel upright 3 by adopting a high-strength bolt with the diameter of 30 mm; an operation platform 5 for placing test equipment is laid between the four middle support beams 4 on each layer; bottom surface frame 1, four steel column 3, four bearing diagonal 2 and the middle supporting beam 4 of multilayer form the major structure of vertical reaction frame, bearing diagonal 2, steel column 3, middle supporting beam 4 also all adopt double pin 80H shaped steel.
Furthermore, every the side of middle supporting beam 4 all is equipped with a experimental preformed hole 6, steel strand wires can wear out therefrom when experimental preformed hole 6 is used for carrying out prefabricated pier stress test, will vertically counter-force frame and prefabricated pier be connected.
Furthermore, an upturning beam 41 is arranged at the center of the nine-square-grid structure of the bottom surface frame 1, and the upturning beam is connected with two corresponding transverse supporting beams 11 through high-strength bolts with the diameter of 30 mm; the middle support beams 4 at the topmost layer are also connected with upturning beams 41 by adopting high-strength bolts with the diameter of 30mm, and the upturning beams 41 are positioned at the tops of the corresponding operation platforms 5; the middle support beams 4 of the rest layers are connected with downward turning beams 42 through high-strength bolts with the diameter of 30mm, and the downward turning beams 42 are positioned at the bottoms of the corresponding operation platforms 5; the upturned beam 41 and the downturned beam 42 are arranged in parallel. The upturned beam 41 and the downturned beam 42 can play a stabilizing role on the longitudinal reaction frame.
Further, vertical reaction frame is still including placing briquetting 7 on the bottom surface frame 1, bottom surface frame 1 upper berth is equipped with a plurality of I16I-steel, forms a plane pile the pre-compaction piece 7 of concrete on the plane, briquetting 7's weight more than or equal to 500t specifically is 800t or 1500t, briquetting 7 can strengthen vertical reaction frame's stability, when carrying out stress test to prefabricated pier, because the tensile force is great, briquetting 7 can prevent that vertical reaction frame from taking place the position change under the reaction of force to influence the accuracy of stress test result.
Preferably, the oblique support beam 2, the steel upright 3 and the middle support beam 4 are made of double-spliced 80H-shaped steel, and the specific specification is 800 × 600 × 26.
In the actual operation of the utility model, four transverse supporting beams 11 and four longitudinal supporting beams 12 are bolted into a squared figure, forming a bottom frame 1; then four corners of one grid in the middle of the bottom surface frame 1 are connected with four steel upright posts 3 by bolts, four corresponding oblique supporting beams 2 are connected with four corners of the periphery of the bottom surface frame 1 by bolts, and the tops of the oblique supporting beams 2 are connected with the tops of the steel upright posts 3 by bolts; the middle supporting beam 4, the upward turning beam 41 and the downward turning beam 42 are sequentially connected to the steel upright 3 from bottom to top, and the operation platform 5 is laid on the middle supporting beam 4 on each layer; drilling a test preformed hole 6 on the side wall of each intermediate support beam 4; and finally, the bottom surface frame 1 is stacked with the pre-pressing block 7.
When the prefabricated bridge pier is subjected to a stress test, one end of a steel strand penetrates into a test preformed hole 6 in the middle supporting beam 4 on the longitudinal reaction frame and is connected with a penetrating jack on the operation platform 5, the other end of the steel strand penetrates out of a preformed hole in the prefabricated cover beam and is connected with the penetrating jack, and the steel strand is pressed by pumping oil to the jack to stretch the steel strand, so that the stress test of longitudinal horizontal force can be performed on the prefabricated bridge pier.
Example two:
referring to the attached drawings 1-5, the second embodiment is different from the first embodiment only in that each of the upturning girder 41 and the downturning girder 42 is also provided with a test prepared hole 6, during actual operation, a hanging basket is hung at the corresponding upturning girder 41 or the corresponding downturning girder 42 according to the height of the prefabricated pier, a penetrating jack is placed in the hanging basket, one end of a steel strand penetrates through the test prepared hole 6 on the corresponding upturning girder 41 or the corresponding downturning girder 42 and is connected with the penetrating jack in the hanging basket, the other end of the steel strand penetrates through the prepared hole of the prefabricated capping girder and is connected with the penetrating jack, and the steel strand is pulled by applying oil pressure to the jack so as to perform a longitudinal horizontal force stress test on the prefabricated pier.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a prefabricated pier is longitudinal reaction frame for force test which characterized in that: the device comprises a bottom surface frame (1), wherein four corners of the bottom surface frame (1) are respectively provided with an oblique supporting beam (2), and the four oblique supporting beams (2) are symmetrically arranged to form a trapezoidal structure;
the top surface of the bottom surface frame (1) is upwards fixedly connected with four steel upright columns (3), the four steel upright columns (3) are centrosymmetrically distributed by taking the center of the bottom surface frame (1) as the center, and the top of each steel upright column (3) is fixedly connected with the top of the corresponding inclined supporting beam (2);
a plurality of layers of middle supporting beams (4) are arranged between every two adjacent steel upright columns (3), the heights of the four middle supporting beams (4) on the same layer are the same, and the middle supporting beams (4) are fixedly connected with the corresponding steel upright columns (3); an operation platform (5) for workers to operate and place test equipment is laid between the four middle supporting beams (4) on each layer;
the side surface of each middle supporting beam (4) is provided with a test preformed hole (6);
the longitudinal reaction frame also comprises a pre-pressing block (7) placed on the bottom surface frame (1).
2. The longitudinal reaction frame for the prefabricated pier stress test according to claim 1, wherein the longitudinal reaction frame comprises: the bottom surface frame (1) comprises four transverse supporting beams (11) and four longitudinal supporting beams (12), the transverse supporting beams (11) and the longitudinal supporting beams (12) are uniformly distributed and are mutually perpendicular and crossed to form a nine-grid structure, and the four steel upright columns (3) are arranged at four corners of one grid in the middle of the nine-grid structure.
3. The longitudinal reaction frame for the prefabricated pier stress test is characterized in that: the transverse supporting beam (11), the longitudinal supporting beam (12) and the middle supporting beam (4) are connected with the corresponding steel upright posts (3) through high-strength bolts with the diameter of 30 mm.
4. The longitudinal reaction frame for the prefabricated pier stress test is characterized in that: the oblique supporting beam (2), the steel upright posts (3), the transverse supporting beam (11), the longitudinal supporting beam (12) and the middle supporting beam (4) are all made of double-spliced 80H-shaped steel.
5. The longitudinal reaction frame for the prefabricated pier stress test is characterized in that: an upturning beam (41) is arranged at the center of the Sudoku structure, and the upturning beam is fixedly connected with two corresponding transverse supporting beams (11);
an upturning beam (41) is also fixedly connected between the middle supporting beams (4) at the topmost layer, and the upturning beam (41) is positioned at the top of the corresponding operation platform (5);
the middle supporting beams (4) of the other layers are fixedly connected with a downward turning beam (42), and the downward turning beam (42) is positioned at the bottom of the corresponding operation platform (5); the upturning beam (41) and the downturning beam (42) are arranged in parallel.
6. The longitudinal reaction frame for the prefabricated pier stress test according to claim 5, wherein the longitudinal reaction frame comprises: and each of the upturning beam (41) and the downturning beam (42) is also provided with a test preformed hole (6).
7. The longitudinal reaction frame for the prefabricated pier stress test according to claim 5 or 6, wherein the longitudinal reaction frame comprises: the downward turning beam (42) and the corresponding middle supporting beam (4) as well as the upward turning beam (41) and the corresponding middle supporting beam (4) or transverse supporting beam (11) are connected by adopting high-strength bolts with the diameter of 30 mm.
8. The longitudinal reaction frame for the prefabricated pier stress test according to claim 1, wherein the longitudinal reaction frame comprises: the weight of the pre-pressing block (7) is more than or equal to 500 t.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020920976.1U CN211978309U (en) | 2020-05-27 | 2020-05-27 | Longitudinal reaction frame for prefabricated pier stress test |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020920976.1U CN211978309U (en) | 2020-05-27 | 2020-05-27 | Longitudinal reaction frame for prefabricated pier stress test |
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| CN211978309U true CN211978309U (en) | 2020-11-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114351601A (en) * | 2021-12-10 | 2022-04-15 | 中铁四院集团南宁勘察设计院有限公司 | Reaction frame device for bridge rotation construction and construction method thereof |
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2020
- 2020-05-27 CN CN202020920976.1U patent/CN211978309U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114351601A (en) * | 2021-12-10 | 2022-04-15 | 中铁四院集团南宁勘察设计院有限公司 | Reaction frame device for bridge rotation construction and construction method thereof |
| CN114351601B (en) * | 2021-12-10 | 2023-11-28 | 中铁四院集团南宁勘察设计院有限公司 | Reaction frame device for bridge swivel construction and construction method thereof |
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