CN220649957U - Static load test detection mechanism for concrete beam bridge - Google Patents
Static load test detection mechanism for concrete beam bridge Download PDFInfo
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- CN220649957U CN220649957U CN202321835866.5U CN202321835866U CN220649957U CN 220649957 U CN220649957 U CN 220649957U CN 202321835866 U CN202321835866 U CN 202321835866U CN 220649957 U CN220649957 U CN 220649957U
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- 239000004567 concrete Substances 0.000 title claims abstract description 34
- 230000003068 static effect Effects 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 59
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Abstract
The application relates to a concrete beam bridge static load test detection mechanism, which relates to the technical field of bridge detection tools and comprises a bolster supported at the bottoms of two ends of a box girder; the counter-force seats are arranged on the working plane, and a plurality of counter-force seats are arranged on two sides of the box girder along the length direction of the box girder; the reaction frame is detachably connected with the reaction seat; the jack is connected to the reaction frame, and the piston rod is downward abutted to the top end of the box girder; the reaction frame comprises a door-shaped reaction beam and clamping plates connected to the bottom ends of the two sides of the reaction beam; the counterforce seat comprises an embedded part embedded in the concrete working plane and a clamping part used for clamping the clamping plate; the bottom end of the clamping plate is provided with a travelling wheel. The static load test device has the effect of improving the efficiency of the static load test.
Description
Technical Field
The application relates to the technical field of bridge detection tools, in particular to a concrete beam bridge static load test detection mechanism.
Background
The girder bridge takes a main girder which is mainly bent as a bridge of a bearing member. The more common girder form is the case roof beam, and concrete case roof beam is through pouring concrete after the reinforcing bar net piece welding shaping. And after the concrete precast box girder is manufactured, a static load test is carried out to measure whether the deflection of the bridge after being pressed is within the standard.
The existing static load test device is characterized in that two pad beams are fixed on the ground, the left end and the right end of a concrete box beam are placed on the pad beams, then a counter-force beam is lifted to the upper side of the concrete box beam through a crane, then the counter-force beam is connected with the pad beams through steel bars, a plurality of jacks are arranged between the lower end face of the counter-force beam and the concrete box beam along the length direction of the concrete box beam, and after a piston rod of each jack stretches out, static load pressure is generated on the concrete box beam. After the test is finished, the steel bars are removed, the jacks are removed, the counter force Liang Diao is removed by the crane, and finally the concrete box girder is lifted away.
In view of the above-described related art, the inventors found that the reaction beam is also long due to the tank Liang Jiaochang, resulting in a very inconvenient hoisting of the reaction beam, which affects the efficiency of the static load test.
Disclosure of Invention
In order to improve the efficiency of static load test, the application provides a concrete beam bridge static load test detection mechanism.
The application provides a concrete beam bridge static test detection mechanism adopts following technical scheme:
the utility model provides a concrete beam bridge static load test detection mechanism, includes the backing beam of supporting in case roof beam both ends bottom, still includes:
the counter-force seats are arranged on the working plane, and a plurality of counter-force seats are arranged on two sides of the box girder along the length direction of the box girder;
the reaction frame is detachably connected with the reaction seat;
and the jack is connected to the reaction frame, and the piston rod is downwards abutted to the top end of the box girder.
Through adopting above-mentioned technical scheme, the reaction frame is independent setting, and every reaction frame corresponds a set of load of perpendicular to case roof beam extending direction, but the counter-force seat of connection is selected as required to accomplish the load arrangement to the case roof beam through the method that sets up a plurality of reaction frames, when the jack work pushes down the case roof beam, the jack can transmit the counter-force for the counter-force frame, by the force that receives of counter-force frame of counter-force seat balance, compare traditional hoist and mount installation counter-force roof beam's method, the load is arranged more convenient and fast, the efficiency of static test has been improved.
Optionally, the reaction frame comprises a door-shaped reaction frame and clamping plates connected to the bottom ends of two sides of the reaction frame; the counter-force seat comprises an embedded part embedded in the concrete working plane and a clamping part for clamping the clamping plate.
Through adopting above-mentioned technical scheme, can accomplish the setting of reaction frame and counter-force base with the joint board card income joint portion, convenient and fast has improved static load test efficiency.
Optionally, a travelling wheel is arranged at the bottom end of the clamping plate.
Through adopting above-mentioned technical scheme, the walking wheel can be convenient for the removal of reaction frame, need not use the portal crane can move the reaction frame into or shift out the reaction seat, has improved the efficiency of static load test.
Optionally, a guide rail is arranged on the working plane, and a groove matched with the guide rail in shape is arranged on the travelling wheel.
Through adopting above-mentioned technical scheme, the walking wheel removes along the guide rail, can guarantee when removing the reaction frame that the skew can not appear in the direction of movement, can aim at joint portion joint with the joint board fast, improves the installation effectiveness of reaction frame.
Optionally, the clamping portion is an L-shaped plate with two opposite openings.
Through adopting above-mentioned technical scheme, the joint can be accomplished to the joint board between inserting two L shaped plates.
Optionally, the clamping plate is provided with a jack, and the clamping part is slidably provided with a plug post with shape matching with the jack.
Through adopting above-mentioned technical scheme, after inserting the post and inserting the jack, can make the reaction frame can not produce the displacement between horizontal direction and the reaction seat, can not lead to the reaction frame to remove because of the atress when carrying out the static test, reduce the potential safety hazard that probably consequently takes place.
Optionally, a pressing plate is hinged to the end of the piston rod of the jack.
Through adopting above-mentioned technical scheme, the clamp plate can increase the area of contact between jack and the case roof beam, reduces the destruction to the case roof beam when applys the load to the case roof beam, and the ball articulates the top surface that can make the clamp plate laminate the case roof beam better.
Optionally, a flexible pad is arranged on one side of the pressing plate away from the piston rod.
Through adopting above-mentioned technical scheme, the flexible pad can make the clamp plate more even when transmitting the load to the case roof beam, and effective area of force is bigger.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the counter-force frames are independently arranged, each counter-force frame corresponds to a group of loads perpendicular to the extending direction of the box girder, the counter-force seats can be connected according to needs, the load arrangement of the box girder is completed through a method of arranging a plurality of counter-force frames, when the box girder is pressed down by the jack in operation, the jack can transfer counter-force to the counter-force frames, and the counter-force seats balance the received force of the counter-force frames, so that the load arrangement is more convenient and quicker than the traditional method of hoisting and installing the counter-force girders, and the efficiency of static load test is improved;
2. the travelling wheels move along the guide rails, so that the moving direction can be prevented from shifting when the reaction frame is moved, the clamping plates can be rapidly clamped by aiming at the clamping parts, and the installation efficiency of the reaction frame is improved;
3. after the inserted column is inserted into the jack, the reaction frame can not generate displacement between the horizontal direction and the reaction seat, the reaction frame can not move due to stress when a static load test is carried out, and potential safety hazards possibly caused by the displacement are reduced;
4. the clamp plate can increase the area of contact between jack and the case roof beam, reduces the destruction to the case roof beam when applys the load to the case roof beam, and the ball articulates the top surface that can make the clamp plate laminate the case roof beam better.
Drawings
FIG. 1 is a schematic overall structure of an embodiment of the present application;
FIG. 2 is a schematic diagram of a connection structure between a reaction frame and a reaction seat according to an embodiment of the present application;
100, a bolster; 1. a counterforce seat; 11. a pre-buried part; 12. a clamping part; 121. inserting a column; 2. a reaction frame; 21. a reaction frame; 22. a clamping plate; 221. a jack; 23. a walking wheel; 3. a jack; 31. a pressing plate; 32. a flexible pad; 4. and a guide rail.
Detailed Description
The present application is described in further detail below with reference to fig. 1-2.
The application provides a concrete beam bridge static test detection mechanism, refer to fig. 1 and 2, including bolster 100, counter-force seat 1, reaction frame 2, jack 3 and guide rail 4. The bolster 100 is a reinforced concrete beam and is arranged at the bottoms of the two ends of the box beam in a cushioning manner; the counterforce seat 1 is embedded on the concrete working plane; the guide rail 4 is arranged along the length direction of the box girder; the reaction frame 2 is connected to the guide rail 4 in a sliding manner and is detachably connected with the reaction seat 1; the cylinder body of the jack 3 is connected to the reaction frame 2, and the piston rod props against the top end of the box girder to apply load to the box girder.
The bolster 100 is a rectangular cross-section beam made of reinforcement cage cast concrete and used for supporting two ends of the bottom of the box beam.
The two counter-force seats 1 are a group, and the two counter-force seats 1 are symmetrically arranged on two sides of the box girder. The reaction force seat 1 includes a reaction force frame 21, a joint plate 22, and a traveling wheel 23. The reaction frame 21 is of an inverted U shape, spans across the two sides of the box girder, has a rectangular cross section, and is formed by welding rectangular steel pipes. The two ends of the counter-force frame 21 are welded with clamping plates 22, the clamping plates 22 are rectangular plates, and the cross section of the clamping plates is larger than that of the counter-force frame 21. The bottom of the clamping plate 22 is provided with a travelling wheel 23, the circumferential side wall of the travelling wheel 23 is provided with a groove which is matched with the shape of the guide rail 4, so that the travelling wheel 23 can roll on the guide rail 4 and can not deviate from the position when being clamped with the guide rail 4. In this embodiment, two rows of four traveling wheels 23 are disposed on each clamping plate 22.
The reaction force seat 1 includes a locking portion 12 and an embedded portion 11. The embedded part 11 comprises an embedded plate and an embedded part welded at the lower end. The embedded plate is rectangular, and the top surface is flush with the working plane after being embedded in the concrete working plane. The embedded part is formed by welding two vertical plates and a transverse plate, the two vertical plates are parallel to each other and are vertically welded at the bottom end of the embedded plate. The transverse plate is welded at the bottom ends of the two vertical plates and is parallel to the embedded plate. Circular through holes are formed in the vertical plate and the transverse plate, and concrete columns can be formed in the holes after concrete planes are poured, so that the embedded part 11 can be firmly connected in the concrete.
The clamping portion 12 is two L-shaped steel plates, the openings are opposite, and an inverted T-shaped accommodating cavity is formed for accommodating the clamping plate 22. The back of the L-shaped steel plate is provided with a reinforcing rib plate which is perpendicular to the L-shaped steel plate and used for reinforcing the connection strength between the clamping part 12 and the embedded part 11.
The clamping plate 22 is provided with a cylindrical insertion hole 221, the clamping part 12 is provided with a through hole with the same diameter as the insertion hole 221, and the through hole is internally provided with a plug post 121 in a penetrating way. The plunger 121 is cylindrical, has the same diameter as the insertion hole 221, and is provided with a convex ring at the upper side, so that an operator can lift the plunger 121 conveniently. When the engagement plate 22 engages with the engagement portion 12, the plug 121 is inserted into the insertion hole 221, so that the reaction frame 2 is not displaced between the reaction seat 1 and the horizontal direction, and the reaction frame 2 is not moved by the stress during the static load test, thereby reducing potential safety hazards which may occur.
The middle part bolted connection of reaction frame 21 has jack 3, and in this embodiment, jack 3 is hydraulic jack 3, is provided with two on every reaction frame 21. The piston end ball joint of jack 3 has clamp plate 31, and clamp plate 31 is the rectangle steel sheet, can increase the area of contact between jack 3 and the case roof beam, reduces the destruction to the case roof beam when applys the load to the case roof beam, and the ball joint can make clamp plate 31 laminate the top surface of case roof beam better. The flexible pad 32 is adhered to one side of the pressing plate 31 far away from the piston rod, and the flexible pad 32 can enable the pressing plate 31 to be more uniform when transferring load to the box girder, so that the effective stress area is larger.
The principle of the static load test in the embodiment of the application is as follows: placing the bolster 100 on the work plane at a spacing slightly less than the length of the box girder; hoisting and placing the box girder on the bolster 100 so that the box girder is parallel to the guide rail 4; pushing the reaction frame 2 to the reaction seat 1 along the guide rail 4, aligning the through holes on the clamping plate 22 with the plug posts 121 on the clamping part 12, inserting the through holes into the insertion holes 221, and continuing to connect other reaction frames 2 with the corresponding reaction seats 1; on the supporting lines of the box girder body midspan and two sides of the backing girders 100, a dial indicator for measuring deflection is erected by using a bracket, and the dial indicator bracket is required to be firm and stable; the jack 3 is used to apply a predetermined load to the box girder.
The embodiments of this embodiment are all preferred embodiments of the present application, and are not intended to limit the scope of the present application, in which like parts are denoted by like reference numerals. Therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. The utility model provides a concrete beam bridge static load test detection mechanism, includes support bed beam (100) at case roof beam both ends bottom, its characterized in that still includes:
the counter-force seats (1) are arranged on the working plane, and a plurality of counter-force seats are arranged on two sides of the box girder along the length direction of the box girder;
the reaction frame (2) is detachably connected with the reaction seat (1);
and the jack (3) is connected to the reaction frame (2), and the piston rod is downward abutted to the top end of the box girder.
2. The concrete beam bridge static load test detection mechanism according to claim 1, wherein the reaction frame (2) comprises a door-shaped reaction frame (21) and clamping plates (22) connected to bottom ends of two sides of the reaction frame (21); the reaction seat (1) comprises an embedded part (11) embedded in a concrete working plane and a clamping part (12) for clamping the clamping plate (22).
3. The concrete beam bridge static load test detection mechanism according to claim 2, wherein a travelling wheel (23) is arranged at the bottom end of the clamping plate (22).
4. A concrete beam bridge static load test detection mechanism according to claim 3, wherein the working plane is provided with a guide rail (4), and the travelling wheel (23) is provided with a groove matched with the guide rail (4) in shape.
5. The static load test detection mechanism of a concrete beam bridge according to claim 2, wherein the clamping part (12) is an L-shaped plate with two opposite openings.
6. The concrete beam bridge static load test detection mechanism according to claim 5, wherein the clamping plate (22) is provided with an insertion hole (221), and the clamping portion (12) is slidably provided with a plug column (121) which is adapted to the shape of the insertion hole (221).
7. The concrete beam bridge static load test detection mechanism according to claim 1, wherein a pressing plate (31) is hinged to the end of a piston rod of the jack (3).
8. The concrete beam bridge static load test detection mechanism according to claim 7, wherein a flexible pad (32) is arranged on one side of the pressing plate (31) away from the piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321835866.5U CN220649957U (en) | 2023-07-12 | 2023-07-12 | Static load test detection mechanism for concrete beam bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321835866.5U CN220649957U (en) | 2023-07-12 | 2023-07-12 | Static load test detection mechanism for concrete beam bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220649957U true CN220649957U (en) | 2024-03-22 |
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ID=90290038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321835866.5U Active CN220649957U (en) | 2023-07-12 | 2023-07-12 | Static load test detection mechanism for concrete beam bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220649957U (en) |
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2023
- 2023-07-12 CN CN202321835866.5U patent/CN220649957U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20240521 Address after: Room 301, building a, No.20 Xinghai Road, Pingfang District, Harbin City, Heilongjiang Province Patentee after: Heilongjiang Provincial Communications Investment Engineering Consulting Group Co.,Ltd. Country or region after: China Address before: 150006 building 40, xuanxi community, Nangang District, Harbin City, Heilongjiang Province Patentee before: Heilongjiang Longfeng Highway Engineering Inspection Co.,Ltd. Country or region before: China |