CN211256708U - Synchronous jacking device for replacing bridge support - Google Patents
Synchronous jacking device for replacing bridge support Download PDFInfo
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- CN211256708U CN211256708U CN201921523403.9U CN201921523403U CN211256708U CN 211256708 U CN211256708 U CN 211256708U CN 201921523403 U CN201921523403 U CN 201921523403U CN 211256708 U CN211256708 U CN 211256708U
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Abstract
The utility model discloses a synchronous jacking device for changing bridge beam supports belongs to bridge construction tool technical field, include: the jacking platform is fixedly connected with the pier column or the coping after being implanted into the pier column or the coping through an anchor bolt, and the jacking platform is fixedly arranged on two sides of the pier column or the coping along the longitudinal bridge direction; the hydraulic jacks are arranged on the jacking platform along the transverse bridge direction and are used for jacking the upper beam body; the synchronous jacking system comprises a hydraulic pump station and a display screen, wherein the hydraulic pump station is provided with a control valve group, and the control valve group is connected with the hydraulic jack through a hydraulic oil pipe; the displacement sensor is installed in hydraulic jack, and the displacement sensor passes through the cable and is connected with the display screen electricity. Be equipped with displacement sensor in this hydraulic jack, displacement sensor is used for detecting hydraulic jack's jacking height, and when hydraulic jack's jacking height surpassed the settlement deviation, the aperture through adjusting this hydraulic jack's control valve corrected.
Description
Technical Field
The utility model relates to a bridge construction tool technical field specifically is a synchronous jacking device for changing bridge beam supports.
Background
The bridge support is a key structural component for connecting a beam body and an abutment in bridge construction, has the function of supporting a structure and adapts to the movement of the structure caused by expansion and contraction with heat, load, vibration and the like through the deformation or movement of the component of the support, and the load of the beam body is smoothly and safely transmitted to the pier, so that the actual stress condition of the bridge conforms to a calculated theoretical diagram. However, the support is used as a connecting body for opening and closing the bridge bearing, and bears the load transmitted by the beam body for a long time, so that cracking accidents are easily caused, meanwhile, the support is damaged due to the occurrence of disastrous accidents such as earthquakes, and the support for maintaining the normal use of the bridge and ensuring the driving safety needs to be replaced.
At present, the treatment of the damaged support is generally realized by adopting a support replacing mode. Usually, a plurality of jacks and oil pumps are adopted for jacking operation, the support is replaced, namely the oil pumps are connected with the jacks, and in the jacking process, the hydraulic pressure of the oil cylinders of the jacks is controlled by the oil pumps, so that the jacking effect on the upper beam body is achieved. In the jacking process, traditional jacking device comes indirect control jack's jacking force through control oil pressure, but many jacks are isolated relatively, need artifical regulation and control in step in order to reach the effect of synchronous jacking, and the atress size of every jack is different usually, and the jacking synchronism of every jack is difficult to control, can produce the displacement difference like this at the jacking in-process, produces the harm to bridge structures.
Meanwhile, when the bridge support is damaged, the upper beam body needs to be jacked to handle the damaged support, and the problem that the jack is inconvenient to place due to the fact that the gap between the bottom of the upper beam body and the platform cap (or the pier capping beam) is small, the jack at the top of the pier is not enough in arrangement space is often faced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming among the above-mentioned background art many jacks isolated relatively, need artifical regulation and control in step in order to reach the effect of synchronous jacking, the jacking synchronism of every jack is difficult to control, can produce the displacement difference like this in the jacking in-process, produces the not enough of harm to the bridge structures, provides a synchronous jacking device for changing bridge beam supports.
The utility model provides a synchronous jacking device for changing bridge beam supports, a serial communication port, include:
the jacking platform is implanted into the bent cap through an anchor bolt and then fixedly connected with the bent cap, and the jacking platform is fixedly arranged on two sides of the bent cap along the longitudinal bridge direction;
the hydraulic jacks are arranged in multiple numbers, the multiple hydraulic jacks are arranged on the jacking platform along the transverse bridge direction, and the multiple hydraulic jacks are used for jacking the upper beam body;
the synchronous jacking system comprises a hydraulic pump station and a display screen, wherein the hydraulic pump station is provided with a control valve group, and the control valve group is connected with the hydraulic jack through a hydraulic oil pipe;
the displacement sensor is installed in the hydraulic jack and electrically connected with the display screen through a cable, and the display screen is used for displaying the jacking height of the plurality of hydraulic jacks.
The preferred scheme is as follows: the jacking platforms are provided with a plurality of jacking platforms, and the jacking platforms are fixedly arranged on the bent cap at two sides of the bent cap along the transverse bridge direction.
The preferred scheme is as follows: jacking platform includes the mounting panel, set up a plurality of mounting holes that penetrate the crab-bolt on the mounting panel, vertical welding has the roof on the mounting panel, vertical welding has last stiffening rib and lower stiffening rib between roof and the mounting panel.
The preferred scheme is as follows: the upper stiffening ribs are arranged in two numbers, the two upper stiffening ribs are parallel to each other and welded between the upper end face of the top plate and the mounting plate at intervals, the two lower stiffening ribs are arranged in two numbers, and the two lower stiffening ribs are parallel to each other and welded between the lower end face of the top plate and the mounting plate at intervals.
The preferred scheme is as follows: the hydraulic jacks are respectively positioned at the bottoms of the joints of the two adjacent upper beam bodies along the transverse bridge direction, the tops of the hydraulic jacks are provided with upper cushion blocks, and the upper cushion blocks are used for supporting the two adjacent upper beam bodies to synchronously move up and down.
The preferred scheme is as follows: the hydraulic jack is characterized in that lower supports are arranged at the bottoms of the hydraulic jacks, the heights of the lower supports are multiple, and the lower supports are used for being cushioned at the bottoms of the hydraulic jacks to adjust the heights of the hydraulic jacks.
The preferred scheme is as follows: the jacking platform is further provided with temporary support columns, the temporary support columns are symmetrically arranged on two sides of the hydraulic jack, and a plurality of steel plate lifting pads are arranged at the tops of the temporary support columns.
The preferred scheme is as follows: and the jacking platform is provided with an electronic level meter for detecting the inclination angle of the jacking platform, and the electronic level meter is used for detecting and displaying the inclination angle of the jacking platform.
On the basis of the above technical scheme, compare with prior art, the utility model has the advantages as follows:
1) the utility model discloses a synchronous jacking device for changing bridge beam supports, this synchronous jacking device are when changing the support, and many hydraulic jack pass through hydraulic pressure oil pipe and are connected with hydraulic power unit, establish the valve unit of many hydraulic jack of control on the hydraulic power unit, and the valve unit is used for controlling the jacking force of many hydraulic jack respectively. Be equipped with displacement sensor in this hydraulic jack, displacement sensor is used for detecting hydraulic jack's jacking height, can real time monitoring reach every hydraulic jack's jacking height at the in-process that carries out the jacking to the upper beam body. And when the jacking height of the hydraulic jack exceeds the set deviation, correcting by adjusting the opening of a control valve of the hydraulic jack.
2) The utility model discloses a synchronous jacking device for changing bridge beam supports, this synchronous jacking device is when changing the support, and fixed jacking platform is installed to the anchor bolt of implanting on pier stud or bent cap, then carries out synchronous jacking to the upper beam body with many hydraulic jack installations on jacking platform. The hydraulic jack solves the problem that the hydraulic jack cannot be placed due to the fact that a gap between the bottom of the upper beam body and the cover beam is small.
3) The utility model discloses a synchronous jacking device for changing bridge beam supports, this synchronous jacking device's many hydraulic jack are followed the horizontal bridge and are located the bottom of the seam crossing of two adjacent upper beams bodies respectively, and many hydraulic jack's top is equipped with the cushion, goes up the cushion and is used for supporting two adjacent upper beams body synchronous up-and-down motion. The upper cushion block is a steel plate with a certain thickness, so that the local pressure of the upper beam body can be reduced, and the vertical relative displacement of the upper beam body on two sides of the joint is ensured, so that the upper beam body is effectively protected.
Drawings
FIG. 1 is a front view of the structure of the embodiment of the present invention;
fig. 2 is a left side view of the structure of the embodiment of the present invention;
fig. 3 is a front view of the jacking platform according to the embodiment of the present invention;
fig. 4 is a left side view of the structure of the jacking platform of the embodiment of the present invention.
Reference numerals: 1-upper beam body, 2-upper cushion block, 3-hydraulic jack, 4-lower support, 5-jacking platform, 6-anchor bolt, 7-bent cap, 8-support, 51-mounting plate, 52-top plate, 53-upper stiffening rib and 54-lower stiffening rib.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1
Referring to fig. 1 and fig. 2, an embodiment of the present invention provides a synchronous jacking device for replacing a bridge bearing, including:
the jacking platform 5 is implanted into the bent cap 7 through an anchor bolt 6 and then fixedly connected with the bent cap 7, and the jacking platform 5 is fixedly arranged on two sides of the bent cap 7 along the longitudinal bridge direction; the jacking platforms 5 are provided with a plurality of jacking platforms 5, and the jacking platforms 5 are fixedly arranged on the bent cap 7 along the transverse bridge direction at two sides of the bent cap 7. Hydraulic jack 3, this hydraulic jack 3 is equipped with many, and many hydraulic jack 3 are installed on jacking platform 5 along the horizontal bridge to, and many hydraulic jack 3 are used for jacking upper beam body 1.
The synchronous jacking system comprises a hydraulic pump station and a display screen, wherein a control valve bank is arranged on the hydraulic pump station and is connected with the hydraulic jack 3 through a hydraulic oil pipe; and the displacement sensor is arranged in the hydraulic jacks 3 and is electrically connected with a display screen through a cable, and the display screen is used for displaying the jacking heights of the multiple hydraulic jacks 3.
Principle of operation
The utility model discloses a synchronous jacking device for changing bridge beam supports, this synchronous jacking device are when changing support 8, and many hydraulic jack 3 are connected with hydraulic power unit through hydraulic pressure oil pipe, establish the valve unit of many hydraulic jack 3 of control on the hydraulic power unit, and the valve unit correspondence is equipped with the jacking force that is used for controlling many hydraulic jack 3 respectively. This hydraulic jack 3 is equipped with displacement sensor in, and displacement sensor is used for detecting hydraulic jack 3's jacking height, can real time monitoring reach every hydraulic jack 3's jacking height at the in-process that carries out the jacking to the upper beam body 1 to show through the display. When the jacking height of the hydraulic jacks 3 exceeds the set deviation, correcting the opening of the control valve of the hydraulic jack 3 manually or automatically, and controlling the synchronous jacking of the jacking heights of the plurality of hydraulic jacks 3.
Example 2
Referring to fig. 3 and 4, an embodiment of the present invention provides a synchronous jacking device for replacing a bridge bearing, and the embodiment is different from embodiment 1 in that: the jacking platform 5 comprises a mounting plate 51, and a plurality of mounting holes for inserting the anchor bolts 6 are formed in the mounting plate 51. A top plate 52 is vertically welded on the mounting plate 51, and an upper stiffening rib 53 and a lower stiffening rib 54 are vertically welded between the top plate 52 and the mounting plate 51. The two upper stiffening ribs 53 are parallel to each other and welded at intervals between the upper end face of the top plate 52 and the mounting plate 51, the two lower stiffening ribs 54 are parallel to each other and welded at intervals between the lower end face of the top plate 52 and the mounting plate 51, and the two lower stiffening ribs 54 are welded at intervals between the lower end face of the top plate 52 and the mounting plate 51. The mounting plate 51, the top plate 52, the upper stiffening rib 53 and the lower stiffening rib 54 of the jacking platform 5 are all formed by welding steel plates with the thickness of not less than 20 mm.
When the support 8 is replaced, the anchor bolts 6 are implanted into the pier studs or the bent caps 7 to install the fixed jacking platform 5, and then a plurality of hydraulic jacks 3 are installed on the jacking platform 5 to synchronously jack the upper beam body 1. The problem that the hydraulic jack 3 cannot be placed due to the fact that a gap between the bottom of the upper beam body 1 and the cover beam 7 is small is solved.
Example 3
Referring to fig. 2, an embodiment of the present invention provides a synchronous jacking device for replacing a bridge bearing, and the embodiment is different from embodiment 1 in that: the hydraulic jacks 3 are respectively positioned at the bottoms of the joints of the two adjacent upper beam bodies 1 along the transverse bridge direction, the top parts of the hydraulic jacks 3 are provided with upper cushion blocks 2, and the upper cushion blocks 2 are used for supporting the two adjacent upper beam bodies 1 to synchronously move up and down. The bottom of the hydraulic jacks 3 is provided with a plurality of lower supports 4, the height of each lower support 4 is various, and the lower supports 4 are used for being cushioned at the bottom of the hydraulic jacks 3 to adjust the height of the hydraulic jacks 3. The upper cushion block 2 is a steel plate with a certain thickness, can reduce the local pressure of the upper beam body 1, and meanwhile, guarantees that the upper beam bodies 1 on two sides of the joint do not have vertical relative displacement, so that the upper beam body 1 is effectively protected. The lower support 4 is used for being cushioned at the bottom of the hydraulic jack 3 to adjust the height of the hydraulic jack 3, the height is adjusted according to the height of the hydraulic jack 3, the extension amount of a cylinder piston of the hydraulic jack 3 can be reduced, the danger of overturning of the hydraulic jack 3 can be reduced, and the hydraulic jack can be repeatedly used.
Example 4
The embodiment of the utility model provides a synchronous jacking device for changing bridge beam supports, this embodiment compares difference with embodiment 1 and lies in: the jacking platform 5 is also provided with temporary support columns (not shown in the figure), the temporary support columns are symmetrically arranged on two sides of the hydraulic jack 3, and the top of each temporary support column is provided with a plurality of steel plate lifting pads. The temporary support column is used for the hydraulic jack 3 to jack the upper beam body 1 to the set elevation, and then the gravity of the upper beam body 1 is transferred to the temporary support column, so that the problem that the hydraulic jack 3 fails in sealing under long-time bearing is avoided. The electronic level meter for detecting the inclination angle of the jacking platform 5 is arranged on the jacking platform 5 and used for detecting and displaying the inclination angle of the jacking platform 5 and leveling for an auxiliary worker when the jacking platform 5 is installed.
The embodiment of the utility model provides a synchronous jacking device for changing bridge beam supports can refer to following step when the construction:
step 1, building a personnel operation platform, and reasonably selecting a bridge inspection vehicle, a lifting vehicle, a bracket and the like as the operation platform according to operation conditions.
And 2, installing the jacking platform 5, checking the pier position, checking the integrity of concrete in the anchoring area of the jacking platform 5, drilling, implanting a fixing anchor bolt 6, and installing and fixing the jacking platform 5.
And 3, installing hydraulic jacks 3, wherein the hydraulic jacks 3 are arranged at the beam ends along the longitudinal bridge direction, symmetrically distributed at two sides of the cover beam 7 and arranged at the lower parts of the joints of the two adjacent upper beam bodies 1 along the transverse bridge direction. A lower support 4 is arranged on a jacking platform 5 and fixed, a hydraulic jack 3 is arranged in the middle of the lower support 4, and an upper cushion block 2 is arranged between the hydraulic jack 3 and an upper beam body 1.
And 4, testing the jack, wherein after the hydraulic jack 3 is installed, the displacement sensor is connected with the display through a cable, the jack test can be started after the displacement sensor is connected, whether oil leaks exist in the hydraulic jack 3 and the hydraulic oil pipe or not is judged, if the oil leaks, the hydraulic jacks 3 are replaced in time, all the hydraulic jacks 3 are confirmed to be stressed, the jack is stopped when the jacking upper beam body 1 is empty by 2mm, the pressure of the hydraulic jack 3 is kept unchanged, the hydraulic jack is parked for 5-10min for observation, and whether abnormal stress exists in the upper beam body 1 and the cover beam 7 is carefully checked. And observing whether the number of the display is changed or not, and starting jacking after the pressure is not changed.
And 5, formally jacking, wherein formally jacking is started after the jacking is finished, the jacking amount is controlled according to 5mm, the hydraulic jack 3 must be synchronously jacked, the beam jacking speed is controlled to be about 1mm/min, the jacking height of the hydraulic jack 3 and the jacking force of the hydraulic jack 3 are observed at the same time, and double control is realized. And the jacking is performed in a grading way, the jacking height of each 2mm is one grade, the jacking can be stopped after the support 8 is completely emptied, and the pressure of the upper beam body 1 is transferred to the temporary support column.
And 6, replacing the support 8, taking out the original support 8 after the upper beam body 1 is stably jacked, and placing a new support 8.
And 7, beam falling and beam falling resetting after the new support 8 is installed. All the hydraulic jacks 3 synchronously return oil and fall beams, the integral balance of the upper beam body 1 is kept in the beam falling process and is completed by a synchronous falling hydraulic system of a hydraulic pump station, the synchronous integral beam falling is carried out according to the jacking inverse process and is descended in stages, and the height of each 2mm is one stage until the upper beam body 1 is put into practice.
Various modifications and variations of the embodiments of the present invention may be made by those skilled in the art, and they are within the scope of the present invention provided they are within the scope of the claims and their equivalents.
What is not described in detail in the specification is prior art that is well known to those skilled in the art.
Claims (8)
1. The utility model provides a synchronous jacking device for changing bridge beam supports which characterized in that includes:
the jacking platform (5) is implanted into the bent cap (7) through an anchor bolt (6) and then fixedly connected with the bent cap (7), and the jacking platform (5) is fixedly arranged on two sides of the bent cap (7) along the longitudinal bridge direction;
the hydraulic lifting device comprises a plurality of hydraulic jacks (3), wherein the plurality of hydraulic jacks (3) are arranged on a lifting platform (5) along the transverse bridge direction, and the plurality of hydraulic jacks (3) are used for lifting the upper beam body (1);
the synchronous jacking system comprises a hydraulic pump station and a display screen, wherein the hydraulic pump station is provided with a control valve group, and the control valve group is connected with the hydraulic jack (3) through a hydraulic oil pipe;
the displacement sensor is installed in the hydraulic jacks (3), and is electrically connected with the display screen through a cable, and the display screen is used for displaying the jacking heights of the multiple hydraulic jacks (3).
2. The synchronous jacking device for replacing a bridge deck according to claim 1, wherein:
jacking platform (5) are equipped with a plurality ofly, and a plurality of jacking platform (5) are along horizontal bridge to fixed mounting on bent cap (7) in the both sides of bent cap (7).
3. The synchronous jacking device for replacing a bridge deck according to claim 1, wherein:
jacking platform (5) include mounting panel (51), set up a plurality of mounting holes that penetrate crab-bolt (6) on mounting panel (51), vertical welding has roof (52) on mounting panel (51), vertical welding has last stiffening rib (53) and lower stiffening rib (54) between roof (52) and mounting panel (51).
4. The synchronous jacking device for replacing a bridge deck according to claim 3, wherein:
the two upper stiffening ribs (53) are parallel to each other and welded between the upper end face of the top plate (52) and the mounting plate (51) at intervals, the two lower stiffening ribs (54) are parallel to each other and welded between the lower end face of the top plate (52) and the mounting plate (51) at intervals, and the two lower stiffening ribs (54) are welded between the upper end face of the top plate (52) and the mounting plate (51) at intervals.
5. The synchronous jacking device for replacing a bridge deck according to claim 1, wherein:
the hydraulic lifting device is characterized in that the hydraulic lifting jacks (3) are respectively located at the bottoms of the joints of the two adjacent upper beam bodies (1) along the transverse bridge direction, the top parts of the hydraulic lifting jacks (3) are provided with upper cushion blocks (2), and the upper cushion blocks (2) are used for supporting the two adjacent upper beam bodies (1) to synchronously move up and down.
6. The synchronous jacking device for replacing a bridge deck according to claim 1, wherein:
the hydraulic jack is characterized in that lower supports (4) are arranged at the bottoms of the hydraulic jacks (3), the heights of the lower supports (4) are multiple, and the lower supports (4) are used for cushioning the bottoms of the hydraulic jacks (3) to adjust the heights of the hydraulic jacks (3).
7. The synchronous jacking device for replacing a bridge deck according to claim 1, wherein:
the jacking platform (5) is further provided with temporary supporting columns, the temporary supporting columns are symmetrically arranged on two sides of the hydraulic jack (3), and a plurality of steel plate copying pads are arranged at the tops of the temporary supporting columns.
8. The synchronous jacking device for replacing a bridge deck according to claim 1, wherein:
and an electronic level meter for detecting the inclination angle of the jacking platform (5) is arranged on the jacking platform (5), and the electronic level meter is used for detecting and displaying the inclination angle of the jacking platform (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921523403.9U CN211256708U (en) | 2019-09-12 | 2019-09-12 | Synchronous jacking device for replacing bridge support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921523403.9U CN211256708U (en) | 2019-09-12 | 2019-09-12 | Synchronous jacking device for replacing bridge support |
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| CN211256708U true CN211256708U (en) | 2020-08-14 |
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| CN201921523403.9U Active CN211256708U (en) | 2019-09-12 | 2019-09-12 | Synchronous jacking device for replacing bridge support |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112252173A (en) * | 2020-11-05 | 2021-01-22 | 重庆交通大学 | Automatic deviation rectifying device for transverse creeping diseases of curved beam bridge body |
| CN113481882A (en) * | 2021-06-30 | 2021-10-08 | 重庆建工第三建设有限责任公司 | Bridge plate type rubber support and replacement construction method thereof |
| CN114183420A (en) * | 2021-11-11 | 2022-03-15 | 太原重工股份有限公司 | Synchronous jacking system for overhaul of excavator and synchronous jacking method for upper mechanism of excavator |
-
2019
- 2019-09-12 CN CN201921523403.9U patent/CN211256708U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112252173A (en) * | 2020-11-05 | 2021-01-22 | 重庆交通大学 | Automatic deviation rectifying device for transverse creeping diseases of curved beam bridge body |
| CN113481882A (en) * | 2021-06-30 | 2021-10-08 | 重庆建工第三建设有限责任公司 | Bridge plate type rubber support and replacement construction method thereof |
| CN114183420A (en) * | 2021-11-11 | 2022-03-15 | 太原重工股份有限公司 | Synchronous jacking system for overhaul of excavator and synchronous jacking method for upper mechanism of excavator |
| CN114183420B (en) * | 2021-11-11 | 2023-06-27 | 太原重工股份有限公司 | Synchronous jacking system for overhaul of excavator and synchronous jacking method for upper mechanism of excavator |
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