CN210712590U - Variable-gradient jacking transformation construction system for curved continuous beam bridge - Google Patents
Variable-gradient jacking transformation construction system for curved continuous beam bridge Download PDFInfo
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- CN210712590U CN210712590U CN201921570865.6U CN201921570865U CN210712590U CN 210712590 U CN210712590 U CN 210712590U CN 201921570865 U CN201921570865 U CN 201921570865U CN 210712590 U CN210712590 U CN 210712590U
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Abstract
The utility model relates to a curved continuous beam bridge becomes gradient jacking transformation construction system, its characterized in that: comprises a widened heightening bearing platform, a supporting steel cylinder and a continuous beam lifting device; the widened heightening bearing platform is poured on two sides and above the original bearing platform; the bottom end of the supporting steel cylinder is fixed on the widened heightening bearing platform; the continuous beam lifting device comprises a distribution beam, a plurality of jacks and a plurality of cushion blocks, wherein the distribution beam is arranged below the continuous beam and faces the same width direction as the continuous beam, the cushion blocks are fixed above the distribution beam, inclined planes with gradient consistent with that of the continuous beam exist on the top surfaces of the cushion blocks, and the continuous beam is supported above the cushion blocks; the number of the jacks is the same as that of the supporting steel cylinders, the jacks are in one-to-one correspondence, the jacks are inverted and fixed below the distribution beam, the jacks are divided into two groups, the two groups of jacks are arranged in a staggered mode, and a plurality of layers of top supporting plates are arranged between the jacks and the supporting steel cylinders in a padded mode. The utility model relates to a structure has easy dismounting, and the efficiency of construction is high, the characteristics that the original pile foundation of adaptable different degree of depth was pulled out.
Description
Technical Field
The utility model relates to a bridge engineering jacking technical field especially relates to a curved type continuous beam bridge variable gradient jacking transformation construction system, is applicable to continuous beam bridge jacking transformation construction, and the bridge jacking transformation construction that the flat curve combined together complicated violently, the longitudinal gradient adjustment with perpendicular curve of specially adapted.
Background
When an existing bridge is rebuilt, due to the requirements of the bridge lower clear height, newly built (rebuilt) roads, urban elevated road ramps and the like, the elevation and the gradient of the bridge are often required to be adjusted, and the jacking reconstruction is widely applied to actual engineering as the most effective and economical method for solving the problem. Through years of engineering practice and summary of experience and training in the same industry, the following difficulties exist in handling similar engineering fashion at present: (1) the gradient change is large, so that the jacking construction control requirement is high, and higher construction precision is required; (2) in the jacking process, the change of the longitudinal slope of the beam body enables the top surface of the jack and the bottom surface of the beam to form a constantly changing included angle, the contact area of the jack and the bottom of the beam is small, and horizontal thrust is also generated; (3) when the curve road section is jacked, the horizontal curve ultrahigh slope and the vertical curve longitudinal slope are combined, and the construction difficulty is improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a curve type continuous beam bridge becomes gradient jacking and reforms transform construction system to gradient change in existing curve bridge jacking construction is big, and the jack produces the horizontal force with the breast, and the flat curve superelevation slope combines together with perpendicular curve longitudinal slope and is difficult to combine the scheduling problem.
In order to achieve the purpose, the utility model provides a technical scheme does:
the utility model relates to a curved continuous beam bridge becomes gradient jacking transformation construction system for carry out the jacking to curved continuous beam bridge that comprises original cushion cap, former pier stud and continuous beam and reform transform its characterized in that: the device comprises a widened heightening bearing platform, a plurality of supporting steel cylinders and a continuous beam lifting device; the widened heightening bearing platform is poured on two sides and above the original bearing platform; the bottom end of the supporting steel cylinder is fixed on the widened heightening bearing platform; the continuous beam lifting device comprises a distribution beam, a plurality of jacks and a plurality of cushion blocks, wherein the distribution beam is arranged below the continuous beam and faces the same width direction as the continuous beam, the cushion blocks are fixed above the distribution beam, inclined planes with the gradient consistent with that of the continuous beam exist on the top surfaces of the cushion blocks, and the continuous beam is supported above the cushion blocks; the number of the jacks is the same as that of the supporting steel cylinders, the jacks are in one-to-one correspondence, the jacks are inverted and fixed below the distribution beam and are divided into two groups, the two groups of jacks are arranged in a staggered mode, and a plurality of layers of top supporting plates are arranged between the jacks and the supporting steel cylinders in a cushioning mode.
Preferably, the curved continuous beam bridge variable-gradient jacking transformation construction system further comprises connecting box-type members and horizontal connecting square steel rods, the same row of supporting steel cylinders arranged in the width direction of the continuous beam are connected through the connecting box-type members, and the front and rear adjacent connecting box-type members arranged in the length direction of the continuous beam are connected through the horizontal connecting square steel rods. The support steel cylinder is connected into a whole by the connecting box type component and the horizontal connecting square steel rod, so that the overall stability is improved.
Preferably, the upper surface of the widened heightening bearing platform is provided with a plurality of flanges, each flange is fixed with the widened heightening bearing platform through a plurality of connecting ribs embedded in the widened heightening bearing platform, and the support steel cylinder is connected with the widened heightening bearing platform through the flanges. The connection of the supporting steel cylinder and the widened heightening bearing platform is more convenient.
Preferably, the upper surface of the distribution beam is provided with an upper bolt hole, and the lower surface of the distribution beam is provided with a lower bolt hole; the bottom of the cushion block is provided with a steel plate, the steel plate is provided with a bolt hole corresponding to the upper bolt hole, and the steel plate is fixed with the distribution beam through a bolt penetrating through the bolt hole and the upper bolt hole; the top of the jack is provided with a top plate, the top plate is provided with a fixing hole corresponding to the lower bolt hole, and the jack is fixed with the distribution beam through a bolt penetrating through the lower bolt hole and the fixing hole.
Preferably, the lower surface of the distribution beam is further provided with a steel base plate, the steel base plate is provided with a base plate through hole corresponding to the fixing hole, and a bolt for fixing the jack and the distribution beam penetrates through the base plate through hole. The steel base plate has the function of increasing the contact area between the lower surface of the distribution beam and the jack and preventing the lower surface of the distribution beam from deforming.
Preferably, the jack is connected with the PLC through an oil supply pipe.
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
1) the utility model discloses by supporting steel cylinder, level to connecting box component, the square steel pole of connection etc. and forming the jacking bracket system, the lower part supports on widening after the transformation increases the cushion cap through pre-buried flange joint, has that support intensity is high, rigidity is big, the good characteristics of overall stability.
2) Adopt the utility model relates to an in-process that the structure promoted to the bridge, hydraulic pressure, jacking volume and the mutual coordination of jack are controlled by PLC control hydraulic pressure synchronization system, can accomplish synchronous displacement automatically, realize power and displacement control, effectively guarantee that the jacking operation goes on smoothly, and the precision of jacking is high.
3) The top surface of the cushion block is consistent with the transverse gradient of the continuous beam, the top surface is tightly attached to the bottom of the continuous beam, and compared with a beam directly jacked by a jack, the contact area between the cushion block and the beam bottom is larger, so that the beam bottom is not easy to damage; the slope of the cushion block can be adjusted according to the slope of the curve road section, and the jacking construction method is more suitable for jacking construction of the curve road section; the bottom is fixed on the upper side of the distribution beam by using bolts, so that the jacking force on the cushion block is not deflected or displaced and does not generate horizontal thrust.
4) The jack is installed in a downward reverse direction, the jack base is fixed to the lower portion of the distribution beam through bolts and steel base plates, the two sets of jacks are used for jacking alternately and repeatedly, the jacking supporting plate serves as a temporary heightening support, jacking is repeated until the expected height is reached, and bridge collapse caused by insufficient jacking force is avoided in the construction process.
Drawings
FIG. 1 is a cross-sectional view of a curved continuous beam bridge variable-gradient jacking reconstruction construction system;
FIG. 2 is a longitudinal section view of a curved continuous beam bridge variable-gradient jacking reconstruction construction system;
FIG. 3 is a schematic view of the connection of the widened heightening bearing platform and the supporting steel cylinder;
FIG. 4 is a schematic diagram of alternate jacking of two groups of jacks for varying gradient of a curved continuous beam bridge;
FIG. 5 is a schematic view of the structure of the jack;
FIG. 6 is a schematic view of a steel shim plate structure;
FIG. 7 is a schematic view of a spacer block configuration;
FIG. 8 is a schematic view of a distributor beam construction;
fig. 9 is a schematic structural diagram of the jack and the cushion block which are installed on the distribution beam.
Description of the labeling: 1. the bearing platform comprises an original bearing platform, 2, a widened heightening bearing platform, 3, a supporting steel cylinder, 4, a connecting box type component, 5, a jacking plate, 6, a jack, 601, a fixing hole, 602, a top plate, 603, an oil supply pipe, 604, a PLC (programmable logic controller), 7, a distribution beam, 701, an upper bolt hole, 702, a lower bolt hole, 8, a cushion block, 801, a bolt hole, 802, a steel plate, 9, a continuous beam, 10, a horizontal connecting square steel rod, 11, an original pier stud, 12, a flange, 13, a connecting rib, 14, a nut, 15, a bolt, 16, a steel cushion plate, 1601, a cushion plate through hole and 17, and a continuous beam support.
Detailed Description
For further understanding of the present invention, the present invention will be described in detail with reference to the following examples, which are provided for illustration of the present invention but are not intended to limit the scope of the present invention.
The utility model discloses an aim at carries out the jacking transformation to the continuous beam bridge of curve type of constituteing by original cushion cap 1, former pier stud 11 and continuous beam 9, and wherein, continuous beam 9 places in the top of former pier stud 11 through continuous beam preparation 17, and continuous beam 9 of here is the continuous beam of curve type, and it has certain slope.
Construction is adopted the utility model relates to a curved type continuous beam bridge becomes gradient jacking transformation construction system. With reference to the attached drawings 1 and 2, the system comprises a widened heightening bearing platform 2, a plurality of supporting steel cylinders 3, a connecting box type component 4, a horizontal connecting system square steel rod 10 and a continuous beam lifting device. Referring to the attached drawing 3, the widened heightening bearing platform 2 is poured on two sides and above the original bearing platform 1, connecting ribs 13 are embedded in positions designed and provided with the supporting steel cylinders 3 before the widened heightening bearing platform 2 is poured, and flanges 12 are installed.
With reference to fig. 1-3, the bottom end of the supporting steel cylinder 3 is also provided with a flange, and the flange is fixed on the widened heightening bearing platform 2 through a flange 12 and is locked through a nut 14 after connection; the same row of supporting steel cylinders 3 arranged along the width direction of the continuous beam 9 are connected through connecting box-type members 4, and the front and rear adjacent connecting box-type members 4 arranged along the length direction of the continuous beam 9 are connected through horizontal connecting square steel rods 10, so that the overall stability of the supporting steel cylinders 3 is improved.
The continuous beam lifting device comprises a distribution beam 7, a plurality of jacks 6 and a plurality of cushion blocks 8, wherein the distribution beam 7 is formed by welding steel plates and steel pipes to form a lattice steel box beam and provides enough rigidity to transfer jacking force, the distribution beam 7 is arranged below the continuous beam 9 and faces the same direction as the width direction of the continuous beam 9, and as shown in the attached drawing 8, the upper surface of the distribution beam 7 is provided with an upper bolt hole 701, and the lower surface of the distribution beam 7 is provided with a lower bolt hole 702. Referring to fig. 7, a steel plate 802 is disposed at the bottom of the spacer 8, a bolt hole 801 corresponding to the upper bolt hole 701 is disposed on the steel plate 802, an inclined plane having a gradient identical to that of the continuous beam 9 is disposed on the top surface of the steel plate 802, and the continuous beam 9 is supported above the spacer 8; as shown in fig. 9, the steel plate 802 is fixed to the distributor beam 7 by bolts 15 passing through the bolt holes 801 and the upper bolt holes 701. Referring to fig. 9, a steel shim plate 16 is further arranged on the lower surface of the distribution beam 7, the steel shim plate 16 is shown in fig. 6, and shim plate through holes 1601 are arranged at four corners of the steel shim plate 16; the number of the jacks 6 is the same as that of the supporting steel cylinders 3, the jacks 6 correspond to one another, the jacks 6 are inverted and fixed below the distribution beam 7, the structure of the jacks 6 is shown in fig. 5, a top plate 602 is arranged above the jacks 6, fixing holes 601 corresponding to the lower bolt holes 702 are formed in the top plate 602, the jacks 6 are fixed to the distribution beam 7 through bolts 15 penetrating through the lower bolt holes 702, the cushion plate through holes 1601 and the fixing holes 601, and the jacks 6 are connected with a PLC 604 through oil supply pipes 603; the jacks 6 are divided into two groups, the two groups of jacks 6 are arranged in a staggered mode, and a plurality of layers of top supporting plates 5 are arranged between the jacks 6 and the supporting steel cylinder 3 in a padded mode.
The construction method of the curve type continuous beam bridge variable-gradient jacking reconstruction construction system comprises the following steps:
step 1, drilling holes at the periphery and the upper surface of an original bearing platform 1, chiseling a new concrete joint surface and an old concrete joint surface into rough surfaces with the concave-convex difference larger than or equal to 6mm, implanting connecting ribs 13 into the surface of the original bearing platform 1, anchoring by adopting A-grade glue, building a pouring template for widening the heightening bearing platform, binding and widening reinforcing steel bars of the heightening bearing platform, pre-embedding a flange 12 and the connecting ribs 13 at the supporting point of a supporting steel cylinder 3, and pouring concrete to form the widened heightening bearing platform 2.
And 2, sequentially installing the supporting steel cylinders 3, butting the supporting steel cylinders through flanges 12 during connection and locking the supporting steel cylinders by nuts 14, manufacturing a connecting box type member 4, manufacturing horizontal connecting square steel rods 10 according to the required length, horizontally welding the supporting steel cylinders 3 to the connecting box type member 4, and welding the horizontal connecting square steel rods 10 at the longitudinal position of the connecting box type member 4.
And 3, corresponding to one jack 6 above each supporting steel cylinder 3, arranging a distribution beam 7 between the jack 6 and a continuous beam 9, and installing a cushion block 8 on the upper surface of the distribution beam 7.
And 4, controlling the hydraulic pressure and the jacking amount of each jack 6 accurately by a hydraulic synchronization system through a PLC (programmable logic controller) 604, alternately and repeatedly jacking two groups of jacks 6, using a jacking plate 5 as a temporary heightening support, uniformly dispersing the jacking force of each jack 6 on each cushion block 8 through a distribution beam 7, transmitting the cushion blocks 8 to a continuous beam 9, and repeatedly jacking until the expected height is reached.
The present invention has been described in detail with reference to the embodiments, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (6)
1. The utility model provides a continuous beam bridge of curve type variable gradient jacking transformation construction system for to carrying out the jacking transformation to the continuous beam bridge of curve type of constituteing by original cushion cap (1), former pier stud (11) and continuous beam (9), its characterized in that: the device comprises a widened heightening bearing platform (2), a plurality of supporting steel cylinders (3) and a continuous beam lifting device; the widened heightening bearing platform (2) is poured on two sides and above the original bearing platform (1); the bottom end of the supporting steel cylinder (3) is fixed on the widened heightening bearing platform (2); the continuous beam lifting device comprises a distribution beam (7), a plurality of jacks (6) and a plurality of cushion blocks (8), wherein the distribution beam (7) is arranged below the continuous beam (9) and faces the same width direction as the continuous beam (9), the cushion blocks (8) are fixed above the distribution beam (7), inclined planes with the same gradient as that of the continuous beam (9) exist on the top surfaces of the cushion blocks (8), and the continuous beam (9) is supported above the cushion blocks (8); the number of the jacks (6) is the same as that of the supporting steel cylinders (3) and corresponds to one another, the jacks (6) are inverted and fixed below the distribution beam (7), the jacks (6) are divided into two groups, the two groups of jacks (6) are arranged in a staggered mode, and a plurality of layers of top supporting plates (5) are arranged between the jacks (6) and the supporting steel cylinders (3).
2. The construction system for variable-gradient jacking reconstruction of the curved continuous beam bridge according to claim 1, characterized in that: the variable-gradient jacking transformation construction system for the curved continuous beam bridge further comprises connecting box-type members (4) and horizontal connecting square steel rods (10), the supporting steel cylinders (3) arranged in the same row along the width direction of the continuous beam (9) are connected through the connecting box-type members (4), and the connecting box-type members (4) adjacent to each other in the front and back direction along the length direction of the continuous beam (9) are connected through the horizontal connecting square steel rods (10).
3. The construction system for variable-gradient jacking reconstruction of the curved continuous beam bridge according to claim 1, characterized in that: the upper surface of widening and heightening the cushion cap (2) be equipped with a plurality of flanges (12), every flange (12) all through a plurality of splice bar (13) of burying underground in widening and heightening the cushion cap (2) with widen and heighten cushion cap (2) and fix, support steel cylinder (3) with widen and heighten cushion cap (2) and be connected through flange (12).
4. The construction system for variable-gradient jacking reconstruction of the curved continuous beam bridge according to claim 1, characterized in that: the upper surface of the distribution beam (7) is provided with an upper bolt hole (701), and the lower surface of the distribution beam (7) is provided with a lower bolt hole (702); the bottom of the cushion block (8) is provided with a steel plate (802), the steel plate (802) is provided with a bolt hole (801) corresponding to the upper bolt hole (701), and the steel plate (802) is fixed with the distribution beam (7) through a bolt (15) penetrating through the bolt hole (801) and the upper bolt hole (701); a top plate (602) is arranged above the jack (6), a fixing hole (601) corresponding to the lower bolt hole (702) is formed in the top plate (602), and the jack (6) is fixed with the distribution beam (7) through a bolt (15) penetrating through the lower bolt hole (702) and the fixing hole (601).
5. The curved continuous beam bridge variable-gradient jacking reconstruction construction system according to claim 4, wherein: the lower surface of the distributing beam (7) is further provided with a steel base plate (16), a base plate through hole (1601) corresponding to the fixing hole (601) is formed in the steel base plate (16), and a bolt (15) used for fixing the jack (6) and the distributing beam (7) penetrates through the base plate through hole (1601).
6. The curved continuous beam bridge gradient-variable jacking reconstruction construction system according to claim 1 or 4, characterized in that: the jack (6) is connected with a PLC (604) through an oil supply pipe (603).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921570865.6U CN210712590U (en) | 2019-09-20 | 2019-09-20 | Variable-gradient jacking transformation construction system for curved continuous beam bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921570865.6U CN210712590U (en) | 2019-09-20 | 2019-09-20 | Variable-gradient jacking transformation construction system for curved continuous beam bridge |
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| CN210712590U true CN210712590U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921570865.6U Expired - Fee Related CN210712590U (en) | 2019-09-20 | 2019-09-20 | Variable-gradient jacking transformation construction system for curved continuous beam bridge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761081A (en) * | 2020-12-25 | 2021-05-07 | 湖北省路桥集团有限公司 | Replacement structure and construction method for active ultra-wide beam body support |
| CN113026574A (en) * | 2021-04-19 | 2021-06-25 | 佛山市中凯路桥工程有限公司 | Novel jacking support for highway bridge |
-
2019
- 2019-09-20 CN CN201921570865.6U patent/CN210712590U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761081A (en) * | 2020-12-25 | 2021-05-07 | 湖北省路桥集团有限公司 | Replacement structure and construction method for active ultra-wide beam body support |
| CN112761081B (en) * | 2020-12-25 | 2022-07-12 | 湖北省路桥集团有限公司 | Replacement structure and construction method for active ultra-wide beam body support |
| CN113026574A (en) * | 2021-04-19 | 2021-06-25 | 佛山市中凯路桥工程有限公司 | Novel jacking support for highway bridge |
| CN113026574B (en) * | 2021-04-19 | 2021-12-14 | 佛山市中凯路桥工程有限公司 | Novel jacking support for highway bridge |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200609 Termination date: 20210920 |
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| CF01 | Termination of patent right due to non-payment of annual fee |