CN110117936B - Swivel device for bridge pier and swivel construction method - Google Patents
Swivel device for bridge pier and swivel construction method Download PDFInfo
- Publication number
- CN110117936B CN110117936B CN201910498649.3A CN201910498649A CN110117936B CN 110117936 B CN110117936 B CN 110117936B CN 201910498649 A CN201910498649 A CN 201910498649A CN 110117936 B CN110117936 B CN 110117936B
- Authority
- CN
- China
- Prior art keywords
- pier
- bearing platform
- swivel
- reserved
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010276 construction Methods 0.000 title claims abstract description 57
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 140
- 239000010959 steel Substances 0.000 claims abstract description 140
- 239000004568 cement Substances 0.000 claims abstract description 15
- 238000009434 installation Methods 0.000 claims abstract description 12
- 239000004567 concrete Substances 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 230000002787 reinforcement Effects 0.000 claims description 16
- 238000005266 casting Methods 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 9
- 238000004873 anchoring Methods 0.000 claims description 6
- 238000005056 compaction Methods 0.000 claims description 6
- 238000009415 formwork Methods 0.000 claims description 6
- 238000011065 in-situ storage Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims 3
- 239000011376 self-consolidating concrete Substances 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/08—Methods or apparatus specially adapted for erecting or assembling bridges by rotational movement of the bridge or bridge sections
Abstract
A swivel device for bridge piers comprises a rotating part, a counter-force part and an anti-overturning part; the rotating part comprises a rotating body jack, a steel strand for rotating body, a lower steel plate of the rotating disc, a tetrafluoro plate, an upper steel plate of the rotating disc and a rotating shaft; the reaction part comprises a reaction pier; the anti-overturning part comprises an anti-overturning hoop and a cement track; the lower end of the counter-force pier is fixed on the ground, the surface with the stiffening rib faces the direction of the pier, the swivel jack is arranged in the direction of the counter-force pier deviating from the pier, and the cement track and the pier are poured on the ground concentrically; the inner and outer circles of the anti-overturning anchor ear are hooped around the pier body and are arranged on a cement track, and the swivel is wound on the anti-overturning anchor ear by a steel strand; the rotary table lower steel plate, the tetrafluoro plate and the rotary table upper steel plate of the rotary part are sequentially paved in the cylindrical groove of the bearing platform from bottom to top; the device simple structure, installation are convenient, and it has comprehensive cost low, the time limit for a project is short to use in implementing pier swivel construction, and structure atress is less to influence, practices thrift advantages such as construction space.
Description
Technical Field
The utility model relates to bridge construction equipment and a construction method thereof, in particular to a swivel device for bridge piers and a construction method for bridge piers.
Background
Roads are arranged at two sides of the bridge building part, road traffic is very crowded in daytime and at night, and bridge construction is carried out under the condition that normal use of roads at two sides is guaranteed, so that the construction is difficult; in order to cope with the challenge, a special pier construction method is needed, namely, a pier swivel construction method is adopted; developing special pier turning construction equipment, normally constructing pile foundations and bearing caps of piers, hoisting and connecting pier shafts and capping beams of the piers along the direction of a bridge, turning the pier turning equipment between the bearing caps and the pier shafts, turning the pier shafts and the capping beams to a design angle, and finishing turning construction to meet design requirements.
Therefore, various bridge pier swivel construction equipment and swivel construction methods are provided by each design construction unit so as to adapt to the requirements of different types of bridges and construction in different construction environments, and the bridge pier swivel construction equipment has the characteristics but has the defects; the utility model patent application with the publication number of CN203546620U discloses a bridge pier bottom swivel system, but the upper and lower turnplates of the bridge pier bottom swivel system are formed by concrete pouring, so that the bridge pier bottom swivel system has large volume and large construction workload; moreover, as the swivel device cuts off the connection between the bearing platform and the bridge pier, the design strength of the original structure can not be achieved only by the later-stage concrete pouring; secondly, when the pier body is higher or the assembled capping beam is arranged on the pier body, because the capping beam has great weight, the anti-overturning hoop is required to be arranged around the pier body to increase the anti-overturning capacity of the capping beam, but the turning device does not exist.
Disclosure of Invention
The utility model aims at: the swivel device for the bridge pier is simple in structure, convenient to install, low in comprehensive cost, short in construction period, small in structural stress influence, free of influence of a bridge transverse direction and space, and capable of saving construction space.
The technical scheme for solving the problems is as follows: the swivel device for the bridge pier comprises a pier body and a capping beam, and comprises a rotating part, a counterforce part and an anti-overturning part; the method is characterized in that: the swivel device for the bridge pier is arranged between the pier body of the pier and a bearing platform of a lower structure of the bridge;
a cylindrical groove with the diameter of 4-5 meters and the depth of 1.9-2.2 meters is reserved in the middle of the bearing platform, a rotating shaft mounting pore canal I is reserved in the center of the groove, a vertical prestressed screw thread pore canal I is reserved around the cylindrical groove, and a sleeve for fixing the vertical prestressed screw thread is pre-buried at the lower end of the vertical prestressed screw thread pore canal I;
the rotating part comprises a rotating body jack, a steel strand for rotating body, a lower steel plate of the rotating disc, a tetrafluoro plate, an upper steel plate of the rotating disc and a rotating shaft;
the counterforce part comprises counterforce piers;
the anti-overturning part comprises an anti-overturning hoop and a cement track for preventing the anti-overturning hoop from rotating along the pier;
the lower end of the counterforce pier is fixed on the ground, the side with the stiffening rib faces the direction of the pier, the swivel jack is arranged in the direction of the counterforce pier deviating from the pier, and the cement track and the pier are concentrically poured on the ground;
the anti-overturning anchor ear is characterized in that the inner circumference and the outer circumference of the anchor ear are hooped around the pier body and are arranged on a cement track, and the swivel is wound on the anti-overturning anchor ear by a steel strand;
a steel sheet under carousel, tetrafluoro plate and carousel upper steel sheet for the rotation part of pier rotation lay in proper order from the bottom up in the cylindrical recess of cushion cap, the axis of rotation lower extreme install in the axis of rotation installation pore I that the cylindrical recess of cushion cap reserved, first section pier shaft is installed in the upper end of axis of rotation.
The further technical scheme is as follows: the transverse direction of the bearing platform is reserved with a transverse common steel bar duct I for installing and connecting the bearing platform and the transverse common steel bars of the first section of pier body during cast-in-situ, and the bearing platform is also reserved with a longitudinal common steel bar duct I for installing and connecting the bearing platform and the longitudinal common steel bars of the first section of pier body.
When the first section of pier body is cast-in-situ or prefabricated, a transverse common steel bar duct II for connecting the bearing platform and the transverse common steel bars of the first section of pier body is reserved, a longitudinal common steel bar duct II for connecting the bearing platform and the longitudinal common steel bars of the first section of pier body is reserved, a vertical prestressed screw bar duct II for connecting the bearing platform and the vertical prestressed screw bars of the first section of pier body is reserved, and meanwhile, a duct II for installing a rotating shaft is reserved in the center of the lower end of the first section of pier body.
20 cm annular grooves are reserved between the bearing platform and the first section of pier body, and high-strength special self-compaction concrete is poured in the annular grooves after the pier is turned into place.
The swivel device for the bridge pier is characterized by comprising the following components in part by weight: the anti-overturning hoop is internally, externally and internally provided with a rubber pad, and the rubber pad is arranged between the anti-overturning hoop and the contacted pier body; the anti-overturning hoop is arranged on the annular cement track, and the swivel is wound on the anti-overturning hoop by a steel strand.
Another related technical scheme is as follows: the utility model relates to a swivel construction method of a bridge pier, which is to implement swivel construction of the bridge pier by utilizing the swivel device for the bridge pier; namely: tensioning by using a swivel jack, and driving the pier to rotate at a small angle by using the overturning-preventing anchor ear through a steel strand for swivel; tensioning and returning of the swivel jack are repeated continuously, so that a pier swivel is realized; or the bridge pier rotation is realized by using a continuous rotation jack, and the construction steps are as follows:
A. pile foundation and bearing platform construction of bridge lower part structure:
a1, pile foundation manufacturing of a bridge substructure:
constructing a bridge pile foundation according to the original design scheme;
a2, pouring a bearing platform:
when the bearing platform is poured, a cylindrical groove with the diameter of 4-5 meters and the depth of 1.9-2.2 meters is reserved in the middle of the center of the top surface of the bearing platform, a transverse common steel bar channel I for installing a transverse common steel bar for connecting the bearing platform with the first section of pier body is reserved in the transverse direction of the bearing platform, a longitudinal common steel bar channel I for installing a longitudinal common steel bar for connecting the bearing platform with the first section of pier body is reserved in the longitudinal direction of the bearing platform, a rotating shaft installation channel I is reserved in the center of the groove, vertical prestressed threaded steel bar channels I are formed along the periphery of the cylindrical groove, and a sleeve I for fixing the vertical prestressed threaded steel bars is pre-buried at the lower end of the vertical prestressed threaded steel bar channels I;
B. the bearing platform is provided with a rotating part for the pier rotating body:
b1, mounting a rotating shaft:
the lower end of the rotating shaft is arranged in a rotating shaft mounting pore canal I reserved in a cylindrical groove of the bearing platform;
b2, sequentially installing a turntable lower steel plate, a tetrafluoro plate and a turntable upper steel plate in the cylindrical groove from bottom to top;
C. pier body for manufacturing and installing pier:
c1, manufacturing pier bodies of piers:
the lower part of the first section of pier body is a cylinder with the diameter of 4 meters and the height of 2 meters, the part protruding out of the top surface of the bearing platform is identical to the original pier body in structure, a transverse common steel bar duct II for installing the transverse common steel bars for connecting the bearing platform and the first section of pier body is reserved, a longitudinal common steel bar duct II for installing the longitudinal common steel bars for connecting the bearing platform and the first section of pier body is reserved, a vertical prestressed twisted steel bar duct II for connecting the bearing platform and the vertical prestressed twisted steel bars of the first section of pier body is reserved, and meanwhile, a rotating shaft installation duct II for installing a rotating shaft is reserved in the center of the lower end of the first section of pier body;
c2: hoisting a first section of pier body:
after the corresponding rotating shaft of the first section of pier body is hoisted to the bearing platform, a vertical prestressed twisted steel is inserted into a vertical duct reserved in the first section of pier body to be connected with the embedded sleeve, so that a temporary fixing effect is realized;
and C3: casting the pier body by on-site formwork erection, or hoisting after prefabricating the pier body in sections;
D. manufacturing and installing an anti-overturning part:
d1, manufacturing a concrete slideway:
casting an annular concrete slideway on the ground for rotating the anti-overturning bracket;
d2, installing an anti-overturning hoop, and placing the hoop on a concrete slideway;
E. and (3) manufacturing a capping beam:
casting a capping beam by on-site formwork erection, and hoisting two sides of a pier after prefabricating the capping beam in sections at the same time;
F. installing a counter-force pier and a swivel jack:
f1, pouring a jack counter-force pier for a swivel according to the drawing requirements on the two sides along a bridge at the edge position of a bearing platform, and installing a swivel jack;
f2, arranging a steel strand anchoring disc for a swivel in the anti-overturning anchor ear;
f3, penetrating steel strands for the swivel in the swivel jack and the steel strand anchoring disc respectively, wherein each jack uses 7 steel strands with 15.2-15-2-strength 1860-diameter;
G. connecting a hydraulic pump station and a control console;
H. and (3) swivel construction:
after the steps are completed, dismantling the vertical prestressed twisted steel, performing swivel construction, and simultaneously performing measurement and monitoring;
after H2 and turning in place, inserting vertical prestressed screw steel bars into a vertical steel bar pore canal II reserved in the first section of pier body, connecting the vertical prestressed screw steel bars with a sleeve I pre-buried in a bearing platform, and tensioning the prestress;
h3, pouring high-strength special mortar into a vertical reinforced bar pore canal II reserved in the first section of pier body, and pouring high-strength special self-compaction concrete in a gap between the first section of pier body and the bearing platform;
h3, inserting common steel bars into the transverse common steel bar duct I and the longitudinal common steel bar duct I reserved on the bearing platform, and grouting;
I. and (3) after the pier construction is completed, removing each accessory device of the swivel body, and transferring to the next pier construction.
By adopting the structure, the swivel device for bridge pier and the swivel construction method have the following beneficial effects:
1. the bridge pier is not influenced by the space of the bridge pier in the transverse direction, the construction space is saved, and the traffic is minimally influenced:
the swivel device for the bridge pier is adopted to normally construct the pile foundation and the bearing platform of the bridge pier, but the pier body and the capping beam of the bridge pier are processed along the bridge direction, and finally the bridge pier swivel device swivels between the bearing platform and the pier body to rotate the pier body and the capping beam above to a design angle, so that the erection of the bridge pier is completed, the bridge pier is not influenced by the transverse bridge direction space of the bridge pier, the construction space is saved, and the traffic can be influenced to the minimum.
2. The stress influence on the structure is small:
the swivel device for the bridge pier is characterized in that vertical/longitudinal/transverse steel bar channels are reserved on a bearing platform and a first section of pier body, prestressed steel bars/common steel bars are penetrated after swivel is in place, and finally the channels are grouted; because the transverse/longitudinal common steel bars are connected with the vertical prestressed screw bars between the bearing platform and the bridge pier, the structure can reach the original design strength, and the structural stress influence is small.
3. The anti-capsizing capability of the whole system is improved.
According to the swivel device for the bridge pier, the anti-overturning anchor ear is arranged around the pier body of the bridge pier, so that stability in swivel can be guaranteed, stress points are provided for steel strands for swivel, and anti-overturning capacity of the whole system can be improved for swivel construction of externally-added capping beams of the bridge pier with high beams.
4. The swivel device has simple structure, convenient construction and greatly reduced construction cost:
the swivel device for the bridge pier is used for implementing swivel construction of the bridge pier, a complex turntable device is not required to be arranged between the bridge pier and a bearing platform in advance, only a simple rotating shaft, a steel plate and a tetrafluoro plate are used, cost reduction is facilitated, and the swivel device is suitable for swivel construction of the bridge pier on a large scale in a whole line.
The technical features of the swivel device for bridge pier and the swivel construction method of the present utility model will be further described with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic view showing the construction and installation state of a swivel device for bridge pier according to the present utility model;
FIG. 2 is a schematic view of the installation state of the rotating shaft and the rotating disc of the present utility model;
FIG. 3 is a schematic view of the major components of the bridge substructure;
fig. 4 to 6 are schematic structural diagrams of a pile cap and pile foundation:
fig. 4 is a perspective view, fig. 5 is a top view of fig. 4, and fig. 6 is a sectional view of fig. 5 taken along line B-B;
fig. 7-1 to 7-2 are schematic structural views of a first section of pier body:
FIG. 7-1 is a schematic view of the external structure, and FIG. 7-2 is a schematic view of the internal structure;
FIG. 8 is a schematic structural view of a reaction pier;
fig. 9 is a schematic structural view of an anti-tipping anchor.
In the figure:
1-a bridge lower structure, 11-pile foundations, 12-bearing platforms, 13-longitudinal common steel bars, 14-transverse common steel bars, 15-high-strength special self-compaction concrete, 16-vertical prestressed screw bars, 17-first section pier bodies, 18-nth section pier bodies (n > 1), and 19-bent caps;
120-cylindrical grooves, 121-transverse common reinforcement channels I, 122-longitudinal common reinforcement channels I, 123-rotating shaft channels I, 124-vertical prestressed screw reinforcement channels I, 125-sleeves for fixing vertical prestressed screw reinforcement;
171-horizontal common reinforcement channel II, 172-longitudinal common reinforcement channel II, 173-installation rotation shaft channel II, 174-vertical prestressed screw reinforcement channel II;
2-ground; 3-counterforce piers; 4-a swivel jack;
5-cement tracks; 6-an anti-overturning hoop; 7-steel stranded wires for the swivel;
8 a-rotating a lower steel plate; 9-tetrafluoro plate; 8 b-a steel plate on the turntable; 10-rotation axis.
Detailed Description
Embodiment one:
swivel device for bridge pier:
as shown in fig. 1, the swivel device for bridge pier is a swivel device installed between the bottom of the first bridge pier and the bearing platform of the lower structure of the bridge;
the lower structure of the bridge comprises a pile foundation, a bearing platform, a pier body and a capping beam, wherein the pier body and the capping beam are collectively called a pier, and the swivel device for the bridge pier comprises a rotating part, a counterforce part and an anti-overturning part; the swivel device for the bridge pier is arranged between the pier body of the bridge pier and the bearing platform of the lower structure of the bridge;
a cylindrical groove 120 with the diameter of 4.4 meters and the depth of about 2 meters is reserved in the middle of the bearing platform 12, a rotating shaft mounting hole channel I123 is reserved in the center of the groove, a vertical prestressed screw hole channel I124 is reserved around the cylindrical groove 120, and a sleeve 125 for fixing the vertical prestressed screw is pre-buried (see fig. 4-6);
the rotating part comprises a rotating body jack 4, a steel strand 7 for rotating body, a lower steel plate 8a of a rotating disc, a tetrafluoro plate 9, an upper steel plate 8b of the rotating disc and a rotating shaft 10;
the reaction part comprises a reaction pier 3;
the anti-overturning part comprises an anti-overturning hoop 6 and a cement track 5 for preventing the anti-overturning hoop from rotating along the pier;
the counter-force pier 3 is fixed on the ground at two sides of the pier in a direct pouring mode, one surface with stiffening ribs faces the direction of the pier, the swivel jack 4 is arranged in the direction of the counter-force pier deviating from the pier, and the cement track 5 and the pier are concentrically poured on the ground for preventing the overturning anchor ear from rotating along the pier;
the overturning preventing anchor ear 6 is internally and externally arranged around the pier body and is arranged on the cement track 5, the swivel body is wound on the overturning preventing anchor ear by a steel strand 7, and the overturning preventing anchor ear drives the pier to rotate at a small angle by tensioning the swivel jack 4;
the rotary disc lower steel plate 8a, the tetrafluoro plate 9 and the rotary disc upper steel plate 8b of the rotating part for the pier rotating body are sequentially paved in the cylindrical groove 120 of the bearing platform 12 from bottom to top, the lower end of the rotating shaft 10 is installed in a rotating shaft installation pore canal I123 reserved in the cylindrical groove 120 of the bearing platform, and the first pier body 17 is installed at the upper end of the rotating shaft 10 (see figure 2).
As shown in fig. 3, the bridge substructure comprises a pile foundation 11, a bearing platform 12, a first section pier body 17, second to nth sections of pier bodies 18 and a capping beam 19, and in the installed state, the bearing platform 12 and the first section pier body 17 of the bridge substructure 1 are connected by a longitudinal common steel bar 13 and a transverse common steel bar 14 and are reinforced by a vertical prestressed screw steel bar 16; the nth section (n > 1) pier body 18 is fixed on the first section pier body 17 by prefabricating or casting in situ, and the capping beam 19 is arranged above the uppermost pier body.
The bearing platform cast-in-situ is provided with a transverse common steel bar channel I121 for installing the transverse common steel bars connecting the bearing platform 12 and the first section of pier body 17 in advance, a longitudinal common steel bar channel I122 for installing the longitudinal common steel bars connecting the bearing platform and the first section of pier body in advance, a vertical prestressed screw bar channel I124 is reserved around the cylindrical groove 120, and a sleeve 125 for fixing the vertical prestressed screw bar is pre-embedded at the lower end of the vertical prestressed screw bar channel I124 (see fig. 4-6).
When the first section of pier body 17 is cast-in-situ or prefabricated, a transverse common steel bar hole II 171 for connecting the bearing platform 12 with the transverse common steel bars of the first section of pier body 17 is reserved, a longitudinal common steel bar hole II 172 for connecting the bearing platform with the longitudinal common steel bars of the first section of pier body is reserved, a vertical prestressed threaded steel bar hole II 174 for connecting the bearing platform with the vertical prestressed threaded steel bars of the first section of pier body is reserved, and a hole II 173 for installing a rotating shaft is reserved in the center of the lower end of the first section of pier body (see fig. 7-1 and 7-2)
20 cm annular grooves are reserved between the bearing platform and the first section of pier body, and high-strength special self-compaction concrete 15 is poured in the annular grooves after the pier is turned into place.
The inner side and the outer side of the anti-overturning hoop 6 are hooped around the pier body 17, and a rubber pad is arranged between the anti-overturning hoop and the contacted pier body; the anti-overturning hoop is arranged on the annular cement track 5, and the swivel is wound on the anti-overturning hoop 6 by a steel strand 7.
Example two
The utility model relates to a swivel construction method of a bridge pier, which is a construction method for implementing a bridge pier swivel by utilizing the swivel device for the bridge pier, which is provided by the embodiment of the utility model;
namely: the pile foundation and the bearing platform of the bridge lower structure are manufactured by adopting a conventional construction method, but the lifting and connection of the pier body and the capping beam of the bridge pier are along the direction of the bridge, and finally, a swivel is performed between the bearing platform and the pier body, and a swivel jack is utilized for tensioning, so that the overturning prevention anchor ear drives the bridge pier to rotate in a small angle through a steel strand for swivel; tensioning and returning of the swivel jack are repeated continuously, so that a pier swivel is realized, and the pier body and the upper bent cap are rotated to a design angle; the bridge pier swivel can also be realized by using a continuous swivel jack, and the concrete construction steps are as follows:
A. pile foundation and bearing platform construction of bridge lower structure
A1, pile foundation manufacturing of a bridge substructure:
constructing a bridge pile foundation according to the original design scheme;
a2, pouring a bearing platform 12:
when the bearing platform is poured, a cylindrical groove 120 with the diameter of 4.4 meters and the depth of about 2 meters is reserved in the middle of the center of the top surface of the bearing platform 12, a rotating shaft mounting hole channel I123 is reserved in the center of the groove, vertical prestressed twisted steel hole channels I124 are formed along the periphery of the cylindrical groove 120, and a sleeve I125 for fixing vertical prestressed twisted steel is pre-buried at the lower end of the vertical prestressed twisted steel hole channels I124;
a transverse common steel bar channel I121 for installing the transverse common steel bars for connecting the bearing platform 12 and the first section of pier body 17 is reserved in the transverse direction of the bearing platform, and a longitudinal common steel bar channel I122 for installing the longitudinal common steel bars for connecting the bearing platform and the first section of pier body is reserved in the longitudinal direction of the bearing platform;
B. the bearing platform is provided with a rotating part for the pier rotating body:
b1, mounting a rotating shaft:
the lower end of the rotating shaft 10 is arranged in a rotating shaft mounting hole 124 reserved in a cylindrical groove 123 of the bearing platform;
b2, a turntable lower steel plate 8a, a tetrafluoro plate 9 and a turntable upper steel plate 8B are sequentially arranged in the cylindrical groove 123 from bottom to top;
C. pier body for manufacturing and installing pier:
c1, pier body of pier is manufactured
The lower part of the first section of pier body 17 is a cylinder with the diameter of 4 meters and the height of 2 meters, the part protruding out of the top surface of the bearing platform 12 has the same structure as the original pier body, a transverse common steel bar channel II 171 for installing the transverse common steel bars of the bearing platform 12 and the first section of pier body 17 is reserved, a longitudinal common steel bar channel II 172 for installing the longitudinal common steel bars of the bearing platform and the first section of pier body is reserved, a vertical prestressed deformed steel bar channel II 174 for connecting the vertical prestressed deformed steel bars of the bearing platform and the first section of pier body is reserved, and meanwhile, a rotating shaft installation channel II 173 for installing a rotating shaft is reserved in the center of the lower end of the first section of pier body;
c2: hoisting a first section of pier body:
after the corresponding rotating shaft of the first section of pier body is hoisted to the bearing platform, a vertical prestressed twisted steel is inserted into a vertical duct reserved in the first section of pier body to be connected with the embedded sleeve, so that a temporary fixing effect is realized;
and C3: casting the pier body by on-site formwork erection, or hoisting after prefabricating the pier body in sections;
D. manufacturing and installing an anti-overturning part:
d1, manufacturing a concrete slideway:
casting an annular concrete slideway on the ground for rotating the anti-overturning bracket;
d2, installing an anti-overturning hoop, and placing the hoop on a concrete slideway;
E. and (3) manufacturing a capping beam:
casting a capping beam by on-site formwork erection, and hoisting two sides of a pier after prefabricating the capping beam in sections at the same time;
F. installing a counter-force pier and a swivel jack:
f1, pouring jack counterforce piers for the swivel according to drawing requirements on the edge position of the bearing platform along the bridge to two sides, and installing swivel jacks 4;
f2, arranging a steel strand anchoring disc for a swivel in the anti-overturning hoop 6;
f3, penetrating steel strands for the swivel in the swivel jack 4 and the steel strand anchoring disc respectively, wherein 7 steel strands with 15.2-strength 1860 diameters are used for each jack;
G. connecting a hydraulic pump station and a control console;
H. and (3) swivel construction:
after the steps are completed, dismantling the vertical prestressed twisted steel, performing swivel construction, and simultaneously performing measurement and monitoring;
after H2 and turning in place, inserting a vertical prestress screw 16 into a vertical reinforcement duct II 174 reserved in the first section of pier body 17, connecting the vertical prestress screw 16 with a pre-buried sleeve 125, and tensioning prestress;
h3, pouring high-strength special mortar into a vertical reinforcement duct II 174 reserved in the first section of pier body 17, and pouring high-strength special self-compaction concrete 15 between the first section of pier body 17 and the bearing platform 12;
h3, inserting common steel bars into a transverse common steel bar channel I121 and a longitudinal common steel bar channel I122 reserved on the bearing platform, and grouting;
I. and (3) after the pier construction is completed, removing each accessory device of the swivel body, and transferring to the next pier construction.
The above embodiment is only one implementation mode of the present utility model, and as a transformation of the embodiments of the present utility model, when the bearing platform is poured, the diameter and depth of the cylindrical groove 120 reserved in the middle of the center of the top surface of the bearing platform 12 are determined according to the pier body size of the pier;
the tonnage of the swivel jack 4 and the specification of the swivel steel strand 7 are also determined according to the weight of the pier body and the capping beam of the pier which need to swivel.
Claims (2)
1. The swivel device for the bridge pier comprises a pier body and a capping beam, and comprises a rotating part, a counterforce part and an anti-overturning part; the method is characterized in that: the swivel device for the bridge pier is arranged between the pier body of the pier and a bearing platform of a lower structure of the bridge;
a cylindrical groove (120) with the diameter of 4-5 meters and the depth of 1.9-2.2 meters is reserved in the middle of the bearing platform (12), a rotating shaft mounting hole channel I (123) is reserved in the center of the groove, a vertical prestressed screw thread reinforcing steel bar hole channel I (124) is reserved around the cylindrical groove (120), and a sleeve (125) for fixing the vertical prestressed screw thread reinforcing steel bar is pre-buried at the lower end of the vertical prestressed screw thread reinforcing steel bar hole channel I (124);
the transverse direction of the bearing platform is reserved with a transverse common steel bar duct I (121) for installing and connecting the bearing platform (12) and the transverse common steel bars of the first section of pier body (17), and a longitudinal common steel bar duct I (122) for installing and connecting the bearing platform and the longitudinal common steel bars of the first section of pier body;
when the first section of pier body (17) is cast-in-situ or prefabricated, a transverse common steel bar duct II (171) for connecting the bearing platform (12) with the transverse common steel bars of the first section of pier body (17) is reserved, a longitudinal common steel bar duct II (172) for connecting the bearing platform with the longitudinal common steel bars of the first section of pier body is reserved, a vertical pre-stress threaded steel bar duct II (174) for connecting the bearing platform with the vertical pre-stress threaded steel bars of the first section of pier body is reserved, and meanwhile, a duct II (173) for installing a rotating shaft is reserved in the center of the lower end of the first section of pier body;
the rotating part comprises a rotating body jack (4), a steel strand (7) for rotating body, a lower steel plate (8 a) of the rotating disc, a tetrafluoro plate (9), an upper steel plate (8 b) of the rotating disc and a rotating shaft (10);
the counterforce part comprises counterforce piers (3);
the anti-overturning part comprises an anti-overturning hoop (6) and a cement track (5) for preventing the overturning hoop from rotating along the bridge pier;
the lower end of the counterforce pier (3) is fixed on the ground, the surface with the stiffening rib faces the direction of the pier, the swivel jack (4) is arranged in the direction of the counterforce pier deviating from the pier, and the cement track (5) and the pier are poured on the ground concentrically;
the anti-overturning anchor ear (6) is internally and externally coiled around the pier body, is arranged on an annular cement track (5), a rubber pad is arranged between the anti-overturning anchor ear (6) and the contacted pier body, and the swivel is wound on the anti-overturning anchor ear by a steel strand (7);
the rotary table lower steel plate (8 a), the tetrafluoro plate (9) and the rotary table upper steel plate (8 b) of the rotating part of the pier rotating body are sequentially paved in the cylindrical groove (120) of the bearing platform (12) from bottom to top, the lower end of the rotating shaft (10) is installed in a rotating shaft installation hole channel I (123) reserved in the cylindrical groove (120) of the bearing platform, and the first pier body (17) is installed at the upper end of the rotating shaft (10);
a20 cm annular groove (120) is reserved between the bearing platform (12) and the first section pier body (17), and high-strength special self-compaction concrete (15) is poured in the annular groove (120) after the pier rotates in place.
2. A swivel construction method of bridge piers is characterized in that: the swivel construction of the bridge pier is implemented by using the swivel device for the bridge pier according to claim 1; namely: tensioning by using a swivel jack, and driving the pier to rotate at a small angle by using the overturning-preventing anchor ear through a steel strand for swivel; tensioning and returning of the swivel jack are repeated continuously, so that a pier swivel is realized; or the bridge pier rotation is realized by using a continuous rotation jack, and the construction steps are as follows:
A. pile foundation and bearing platform construction of bridge lower part structure:
a1, pile foundation manufacturing of a bridge substructure:
constructing a bridge pile foundation according to the original design scheme;
a2, pouring bearing platform (12):
when the bearing platform is poured, a cylindrical groove (120) with the diameter of 4-5 meters and the depth of 1.9-2.2 meters is reserved in the middle of the top surface center of the bearing platform (12), a transverse common steel bar channel I (121) for installing and connecting the bearing platform (12) and the transverse common steel bars of the first section of pier body (17) is reserved in the transverse direction of the bearing platform, a longitudinal common steel bar channel I (122) for installing and connecting the bearing platform and the longitudinal common steel bars of the first section of pier body is reserved in the longitudinal direction of the bearing platform, a rotating shaft installation channel I (123) is reserved in the center of the groove, vertical prestressed screw bar channels I (124) are reserved along the periphery of the cylindrical groove (120), and a sleeve (125) for fixing vertical prestressed screw bars is pre-buried at the lower end of the vertical prestressed screw bar channel I (124);
B. the bearing platform is provided with a rotating part for the pier rotating body:
b1, mounting a rotating shaft:
the lower end of the rotating shaft (10) is arranged in a rotating shaft mounting hole channel I (123) reserved in a cylindrical groove (120) of the bearing platform;
b2, a turntable lower steel plate (8 a), a tetrafluoro plate (9) and a turntable upper steel plate (8B) are sequentially arranged in the cylindrical groove (120) from bottom to top;
C. pier body for manufacturing and installing pier:
c1, manufacturing pier bodies of piers:
the lower part of the first section of pier body (17) is a cylinder with the diameter of 4 meters and the height of 2 meters, the part protruding out of the top surface of the bearing platform (12) has the same structure as the original pier body, a transverse common reinforcement hole channel II (171) for installing the transverse common reinforcement of the bearing platform (12) and the first section of pier body (17) is reserved, a longitudinal common reinforcement hole channel II (172) for installing the longitudinal common reinforcement of the bearing platform and the first section of pier body is reserved, a vertical prestressed deformed reinforcement hole channel II (174) for connecting the bearing platform and the vertical prestressed deformed reinforcement of the first section of pier body is reserved, and meanwhile, a rotating shaft installation hole channel II (173) for installing a rotating shaft is reserved in the center of the lower end of the first section of pier body;
c2: hoisting a first section of pier body:
after the corresponding rotating shaft of the first section of pier body is hoisted to the bearing platform, a vertical prestressed twisted steel is inserted into a vertical duct reserved in the first section of pier body to be connected with the embedded sleeve, so that a temporary fixing effect is realized;
and C3: casting the pier body by on-site formwork erection, or hoisting after prefabricating the pier body in sections;
D. manufacturing and installing an anti-overturning part:
d1, manufacturing a concrete slideway:
casting an annular concrete slideway on the ground for rotating the anti-overturning bracket;
d2, installing an anti-overturning hoop, and placing the hoop on a concrete slideway;
E. and (3) manufacturing a capping beam:
casting a capping beam by on-site formwork erection, and hoisting two sides of a pier after prefabricating the capping beam in sections at the same time;
F. installing a counter-force pier and a swivel jack:
f1, pouring jack counterforce piers for the swivel according to drawing requirements on the edge position of the bearing platform along the bridge to two sides, and installing swivel jacks (4);
f2, arranging a steel strand anchoring disc for a swivel in the anti-overturning hoop (6);
f3, penetrating steel strands for the swivel in the swivel jack (4) and the steel strand anchoring disc respectively, wherein 7 steel strands with 15.2-strength 1860 diameters are used for each jack;
G. connecting a hydraulic pump station and a control console;
H. and (3) swivel construction:
after the steps are completed, dismantling the vertical prestressed twisted steel, performing swivel construction, and simultaneously performing measurement and monitoring;
after H2 and turning in place, inserting a vertical pre-stressing twisted steel (16) into a vertical steel bar pore canal II (174) reserved in the first section of pier body (17) to be connected with a pre-buried sleeve (125) in the bearing platform, and tensioning the pre-stressing;
h3, pouring high-strength special mortar into a vertical reinforcement duct II (174) reserved in the first section of pier body (17), and pouring high-strength special self-compacting concrete (15) in a gap between the first section of pier body (17) and the bearing platform (12);
h3, inserting common steel bars into a transverse common steel bar duct I (121) and a longitudinal common steel bar duct I (122) reserved on the bearing platform, and grouting;
I. and (3) after the pier construction is completed, removing each accessory device of the swivel body, and transferring to the next pier construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910498649.3A CN110117936B (en) | 2019-06-10 | 2019-06-10 | Swivel device for bridge pier and swivel construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910498649.3A CN110117936B (en) | 2019-06-10 | 2019-06-10 | Swivel device for bridge pier and swivel construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110117936A CN110117936A (en) | 2019-08-13 |
| CN110117936B true CN110117936B (en) | 2024-04-02 |
Family
ID=67524032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910498649.3A Active CN110117936B (en) | 2019-06-10 | 2019-06-10 | Swivel device for bridge pier and swivel construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110117936B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111691315A (en) * | 2020-06-28 | 2020-09-22 | 重庆交通大学 | Bridge pier rotating structure and construction method thereof |
| CN112323646B (en) * | 2020-10-29 | 2022-03-29 | 德州市公路工程总公司 | Construction method and application of horizontal swivel system of rigid frame bridge |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202099746U (en) * | 2011-06-01 | 2012-01-04 | 东北林业大学 | Cable-stayed bridge flat hinge rotator construction device for horizontal rotator construction |
| CN102808376A (en) * | 2012-08-23 | 2012-12-05 | 新津腾中筑路机械有限公司 | Bridge rotation construction support and bridge construction method |
| CN103205927A (en) * | 2013-04-18 | 2013-07-17 | 东北林业大学 | Anti-overturning bridge pier supporting mechanism |
| CN107964877A (en) * | 2017-11-23 | 2018-04-27 | 中铁九局集团有限公司 | The asymmetric mixing girder stayed-cable bridge horizontal swing structure of super-tonnage and its construction method |
| CN210529512U (en) * | 2019-06-10 | 2020-05-15 | 柳州欧维姆机械股份有限公司 | Swivel device for bridge pier |
-
2019
- 2019-06-10 CN CN201910498649.3A patent/CN110117936B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202099746U (en) * | 2011-06-01 | 2012-01-04 | 东北林业大学 | Cable-stayed bridge flat hinge rotator construction device for horizontal rotator construction |
| CN102808376A (en) * | 2012-08-23 | 2012-12-05 | 新津腾中筑路机械有限公司 | Bridge rotation construction support and bridge construction method |
| CN103205927A (en) * | 2013-04-18 | 2013-07-17 | 东北林业大学 | Anti-overturning bridge pier supporting mechanism |
| CN107964877A (en) * | 2017-11-23 | 2018-04-27 | 中铁九局集团有限公司 | The asymmetric mixing girder stayed-cable bridge horizontal swing structure of super-tonnage and its construction method |
| CN210529512U (en) * | 2019-06-10 | 2020-05-15 | 柳州欧维姆机械股份有限公司 | Swivel device for bridge pier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110117936A (en) | 2019-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2013306224B2 (en) | Method and apparatus for lifting and leveling a concrete panel | |
| US5826387A (en) | Pier foundation under high unit compression | |
| CN111648228A (en) | Assembled pier and construction process thereof | |
| CN111764379B (en) | Construction method and structure applied to reverse construction steel pipe pile | |
| CN101831875A (en) | Precast assembly process of prestressed concrete cylindrical hollow pier | |
| CN113652966B (en) | Construction method of full-prefabricated assembly type concrete beam type bridge structure system | |
| CN110117936B (en) | Swivel device for bridge pier and swivel construction method | |
| CN111305051A (en) | Pile type pier assembly structure and construction method | |
| CN116856932B (en) | Large-diameter prestress assembly vertical shaft structure containing glass fiber rib part and construction method | |
| CN210529512U (en) | Swivel device for bridge pier | |
| CN111608435A (en) | Subway station and viaduct combined construction structure and construction method thereof | |
| KR100382877B1 (en) | Pier revolution apparatus and T-type pier construction method using the same | |
| CN111622091B (en) | Stress test method for prefabricated bridge pier | |
| JP3905021B2 (en) | Construction method of viaduct pier | |
| KR200241295Y1 (en) | Pier revolution apparatus and T-type pier construction structure using the same | |
| CN211947917U (en) | Pile type pier assembly structure | |
| JP2008274567A (en) | Circular steel pipe prefabricated bridge and its construction method | |
| CN113652967B (en) | Fully-prefabricated assembly type concrete beam type bridge structure system and construction method thereof | |
| CN219930723U (en) | A anti-anchor structure that draws for installation of assembled bent cap section | |
| CN204728568U (en) | The levelling plate of a kind of pin-connected panel precast concrete | |
| CN216108010U (en) | Concrete beam type bridge and prefabricated small box girder thereof | |
| CN113373800B (en) | Hollow prefabricated assembled pier adopting grouting sleeve and connecting method thereof | |
| CN219604183U (en) | Bridge swivel structure | |
| CN212358032U (en) | Cast-in-place bracket of big cantilever prestressing force bent cap | |
| CN217419282U (en) | Prefabricated small box girder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |