CN112554082A - Method for hoisting newly-added pile foundation reinforcement cage in narrow space under bridge reinforcement bridge - Google Patents
Method for hoisting newly-added pile foundation reinforcement cage in narrow space under bridge reinforcement bridge Download PDFInfo
- Publication number
- CN112554082A CN112554082A CN202011410799.3A CN202011410799A CN112554082A CN 112554082 A CN112554082 A CN 112554082A CN 202011410799 A CN202011410799 A CN 202011410799A CN 112554082 A CN112554082 A CN 112554082A
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- bridge
- reinforcement cage
- pole beam
- hoisting
- lifting
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
-
- 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
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
Abstract
The invention discloses a method for hoisting a newly-added pile foundation reinforcement cage in a narrow space under a bridge reinforcing bridge, which comprises the following steps: A. drilling two holes on an original bridge floor, installing a shoulder pole beam on the bridge floor between the holes, arranging a shoulder pole beam lifting lug on the upper shoulder pole beam, and connecting a first hoisting steel wire rope with a hoisting device by penetrating through the upper shoulder pole beam lifting lug; B. a lower shoulder pole beam is arranged below the original bridge, 2 lower shoulder pole beam lifting lugs are arranged on the lower shoulder pole beam, and a lifting hook is arranged in the middle of the bottom of the lower shoulder pole beam; C. the steel wire rope penetrates through the lower shoulder pole beam lifting lug to be connected with the upper shoulder pole beam; D. the lifting hook implements lifting operation on the reinforcement cage through the steel wire rope. The method can finish hoisting, installing and constructing the reinforcement cage in a narrow space under the bridge. The method has the characteristics of obviously saving the construction period, reducing the construction cost and improving the construction safety and quality.
Description
Technical Field
The invention relates to a method for hoisting a newly-added pile foundation reinforcement cage in a narrow space under a bridge reinforcing bridge, and belongs to the technical field of bridge construction.
Background
Because the demand of traffic volume is increasing day by day, original bridge is transferred and probably need add pier stud and pile foundation, perhaps when the bridge receives geological disasters, great disease appears in bridge foundation and pier stud and needs newly-increased pile foundation in order to implement the reinforcement. The construction of newly-increased pile foundation or pier stud in original bridge below often can face bridge clearance narrow and small, and hoist and mount construction difficulty, equipment such as crane can't be executed and exhibits, needs some new means to implement the hoist and mount operation to under-bridge structure (for example steel reinforcement cage).
Disclosure of Invention
The invention aims to provide a method for hoisting a newly-added pile foundation reinforcement cage in a narrow space below a bridge reinforcing bridge. The method can finish hoisting, installing and constructing the reinforcement cage in a narrow space under the bridge. The method has the characteristics of obviously saving the construction period, reducing the construction cost and improving the construction safety and quality.
The technical scheme of the invention is as follows: a method for hoisting a newly-added pile foundation reinforcement cage in a narrow space under a bridge reinforcement bridge comprises the following steps:
A. drilling two holes on an original bridge floor, installing a shoulder pole beam on the bridge floor between the holes, arranging a shoulder pole beam lifting lug on the upper shoulder pole beam, and connecting a first hoisting steel wire rope with a hoisting device by penetrating through the upper shoulder pole beam lifting lug;
B. a lower shoulder pole beam is arranged below the original bridge, 2 lower shoulder pole beam lifting lugs are arranged on the lower shoulder pole beam, and a lifting hook is arranged in the middle of the bottom of the lower shoulder pole beam;
C. the connecting steel wire rope penetrates through the lower shoulder pole beam lifting lug to be connected with the upper shoulder pole beam;
D. and the lifting hook implements lifting operation on the steel reinforcement cage through a second lifting steel wire rope.
In the method for hoisting the newly-added pile foundation reinforcement cage in the narrow space under the bridge reinforcing bridge, the reinforcement cage is divided into a plurality of sections with proper lengths according to the actual clearance height under the original bridge during machining in a factory.
In the method for hoisting the newly-added pile foundation reinforcement cage in the narrow space under the bridge reinforcement bridge, the reinforcement cage is transported to the side face of the bridge from a processing plant by a truck-mounted crane and is horizontally placed on the ground, and one end of the reinforcement cage extends into the space under the bridge to the maximum extent.
In the method for hoisting the newly-added pile foundation reinforcement cage in the narrow space under the bridge reinforcement bridge, the step D comprises the following steps:
d1: lifting the upper carrying pole beam upwards through the lifting device to enable the lower carrying pole beam to be close to the bottom of the original bridge, gradually loosening a hook of the truck-mounted crane, gradually converting the steel reinforcement cage from a horizontal state to a vertical state under the common cooperation of the truck-mounted crane, the upper carrying pole beam, the lower carrying pole beam and the lifting device, and enabling the steel reinforcement cage to be just right above the hole pile after being lifted;
d2: ground personnel can rotate the reinforcement cage to realize butt joint according to the original butt joint point mark after the reinforcement cage rotates, and straight thread sleeve connection is completed;
D3. after the reinforcement cages are butted, lifting the whole set of device and the reinforcement cages by a lifting device, lowering the reinforcement cages into the holes, fixing the reinforcement cages at the orifices by using I-shaped steel, and reserving butted reinforcement bars to emerge from the orifices;
D4. and repeating the steps for multiple times to realize the multi-section butt joint installation of the whole pile foundation reinforcement cage.
In the method for hoisting the newly-added pile foundation reinforcement cage in the narrow space under the bridge reinforcing bridge, the lifting hook is a rotatable lifting hook.
In the method for hoisting the newly-added pile foundation reinforcement cage in the narrow space under the bridge reinforcement bridge, in the step A, 2 holes are positioned right above the hole pile at the bottom of the bridge.
In the method for hoisting the newly-added pile foundation reinforcement cage in the narrow space below the bridge reinforcing bridge, the hoisting device is a crane or a winch.
The invention has the beneficial effects that: the operation below the existing bridge is often limited by space, so that hoisting equipment cannot be unfolded, large-segment hoisting operation cannot be realized, and the problems of long operation time, large potential safety hazard, poor quality effect and the like can be faced if full-manual scattered splicing operation is adopted.
The invention firstly makes full use of the existing bridge structure, installs lifting equipment on the bridge floor to implement operation, and can also realize the lifting operation through a winch if the bridge floor does not allow a large-scale lifting device due to serious bridge damage. The bridge floor hoisting device is connected with the bridge bottom device by the steel wire rope through drilling on the bridge floor, so that the whole hoisting work is not limited to the space at the bottom of the bridge.
The method can utilize the space under the bridge to the maximum extent, complete the butt joint of multiple sections, complete most of the processing work of the reinforcement cage in a factory, and can complete the construction operation relatively efficiently, with high quality and quickly.
In summary, the method for hoisting the newly-added pile foundation reinforcement cage in the narrow space under the bridge not only solves the problems of construction safety and quality, but also has the advantages of high efficiency, construction cost saving and the like.
Drawings
FIG. 1 is a schematic diagram of a reinforcement cage straightening process;
FIG. 2 is a schematic diagram of hoisting and butt-jointing a reinforcement cage;
FIG. 3 is a schematic view of hoisting and lowering a reinforcement cage;
reference numerals: 1-hole, 2-upper carrying pole beam, 3-upper carrying pole beam lifting lug, 4-first hoisting steel wire rope, 5-hoisting device, 6-lower carrying pole beam, 7-lower carrying pole beam lifting lug, 8-rotatable lifting hook, 9-connecting steel wire rope, 10-second hoisting steel wire rope, 11-steel reinforcement cage and 12-truck-mounted crane.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
The embodiment of the invention comprises the following steps: a method for hoisting a newly-added pile foundation reinforcement cage in a narrow space under a bridge reinforcement bridge comprises the following steps as shown in the attached figures 1-3:
A. drilling two holes 1 on an original bridge floor, installing 1 upper carrying pole beam 2 on the bridge floor between the holes 1, arranging 2 upper carrying pole beam lifting lugs 3 on the upper carrying pole beam 2, and connecting a first hoisting steel wire rope 4 with a hoisting device 5 through the upper carrying pole beam lifting lugs 3;
B. the bridge bottom below the hole 1 is provided with 1 lower carrying pole beam 6, the lower carrying pole beam 6 is provided with 2 lower carrying pole beam lifting lugs 7, and the distance between the 2 lower carrying pole beam lifting lugs 7 is preferably equal to the distance between 2 holes, so that the connecting steel wire rope 9 can be ensured to be in a vertical state in the lifting process, the connecting steel wire rope 9 cannot be in contact with the edge of the hole 1 in the lifting process, and the connecting steel wire rope 9 is prevented from moving and being damaged while the connecting steel wire rope 9 is prevented from moving. And meanwhile, the bridge is damaged. 1 lifting hook 8 is arranged in the middle of the bottom of the lower shoulder pole beam 6;
C. after 2 connecting steel wire ropes 9 are fixed on the upper shoulder pole beam 2, the connecting steel wire ropes 9 pass through the holes 1 and then are fixed on a lower shoulder pole beam lifting lug 7 of the lower shoulder pole beam 6;
D. the lifting hook 8 carries out lifting operation on the reinforcement cage 11 through a second lifting steel wire rope 10.
The step D specifically comprises the following steps:
d1: firstly, processing a pile foundation reinforcement cage 11 in a processing plant, and selecting a plurality of sections with proper lengths according to the actual clearance height under an original bridge when the reinforcement cage 11 is processed. Then transport steel reinforcement cage 11 to bridge bottom side from the processing factory through vehicle-mounted crane 12 to place its horizontal level on ground, place 11 one end at the in-process steel reinforcement cage furthest stretch into to the underbridge space in, be convenient for the later stage with it hoist to be vertical state.
And a second hoisting steel wire rope 10 is fixed on the steel reinforcement cage 11, and the second hoisting steel wire rope 10 is hooked at the lifting hook 8. The upper carrying pole beam 2 is lifted upwards through the lifting device 5, the lower carrying pole beam 6 is close to the bottom of the original bridge, meanwhile, the truck-mounted crane 12 gradually looses the hook, and the reinforcement cage 11 is gradually lifted from the horizontal state to the vertical state under the common cooperation of the truck-mounted crane 12, the upper carrying pole beam 2, the lower carrying pole beam 6 and the lifting device 5, so that the reinforcement cage 11 is just right above the hole pile after being lifted;
d2: then, ground personnel rotate the reinforcement cage 11 to realize butt joint according to the original butt joint mark after the reinforcement cage 11 rotates, and then straight thread sleeve connection is completed;
D3. after the reinforcement cage 11 is butted, the lifting device 5 lifts the whole device and the reinforcement cage 11, the reinforcement cage 11 is lowered into the hole, I-shaped steel transversely penetrates through the reinforcement cage 11, then the reinforcement cage 11 is fixed at the hole opening, and a butted reinforcement steel overflow hole is reserved;
D4. the steps are repeated for a plurality of times, and the multi-section butt joint installation of the whole pile foundation reinforcement cage can be realized.
In the step A, the 2 holes 1 are located right above the hole piles at the bottom of the bridge, so that the steel reinforcement cage 11 is conveniently lifted, and the steel wire ropes are kept in a vertical state in the lifting process.
The hoisting device 5 is a crane or a winch, firstly, the crane is used as the hoisting device 5, and if the bridge is damaged seriously so that large hoisting equipment is not allowed on the bridge floor, the hoisting operation can be realized by the winch.
Claims (7)
1. A method for hoisting a newly-added pile foundation reinforcement cage in a narrow space under a bridge reinforcement bridge is characterized by comprising the following steps of: the method comprises the following steps:
A. drilling two holes (1) on an original bridge floor, installing a carrying pole beam (2) on the bridge floor between the holes (1), arranging a carrying pole beam lifting lug (3) on the upper carrying pole beam (2), and connecting a first lifting steel wire rope (4) with a lifting device (5) through the upper carrying pole beam lifting lug (3);
B. a lower shoulder pole beam (6) is arranged below the original bridge, 2 lower shoulder pole beam lifting lugs (7) are arranged on the lower shoulder pole beam (6), and a lifting hook (8) is arranged in the middle of the bottom of the lower shoulder pole beam (6);
C. the connecting steel wire rope (9) passes through the lower shoulder pole beam lifting lug (7) to be connected with the upper shoulder pole beam (2);
D. the lifting hook (8) carries out lifting operation on the steel reinforcement cage (11) through a second lifting steel wire rope (10).
2. The method for hoisting the newly-added pile foundation reinforcement cage in the narrow space under the bridge reinforcing bridge according to claim 1, characterized in that: the reinforcement cage (11) is divided into a plurality of sections with proper lengths according to the actual clearance height under the original bridge during in-plant processing.
3. The method for hoisting the newly-added pile foundation reinforcement cage in the narrow space under the bridge reinforcing bridge according to claim 1, characterized in that: the reinforcement cage (11) is transported to the side face of the bridge from a processing plant by the truck-mounted crane (12), and is horizontally placed on the ground, and one end of the reinforcement cage (11) extends into the space under the bridge to the maximum extent.
4. The method for hoisting the newly-added pile foundation reinforcement cage in the narrow space under the bridge reinforcing bridge according to claim 1, characterized in that: the step D comprises the following steps:
d1: the upper carrying pole beam (2) is lifted upwards through the lifting device (5), the lower carrying pole beam (6) is close to the bottom of the original bridge, the vehicle-mounted crane (12) gradually loosens the hook, and the reinforcement cage (11) is gradually changed from a horizontal state to a vertical state under the common cooperation of the vehicle-mounted crane (12), the upper carrying pole beam (2), the lower carrying pole beam (6) and the lifting device (5), so that the reinforcement cage (11) is just right above the hole pile after being lifted;
d2: ground personnel can rotate the reinforcement cage (11) to realize butt joint according to the original butt joint mark after the reinforcement cage (11) rotates, and then the straight thread sleeve connection is completed;
D3. after the reinforcement cage (11) is butted, the lifting device (5) lifts the whole device and the reinforcement cage (11), the reinforcement cage (11) is placed into the hole, the reinforcement cage (11) is fixed at the hole opening by using I-shaped steel, and the butted reinforcement is reserved to emerge out of the hole opening;
D4. and repeating the steps for multiple times to realize the multi-section butt joint installation of the whole pile foundation reinforcement cage.
5. The method for hoisting the newly-added pile foundation reinforcement cage in the narrow space under the bridge reinforcing bridge according to claim 4, characterized in that: the lifting hook (8) is a rotatable lifting hook.
6. The method for hoisting the newly-added pile foundation reinforcement cage in the narrow space under the bridge reinforcing bridge according to claim 1, characterized in that: in the step A, the 2 holes (1) are positioned right above the hole piles at the bottom of the bridge.
7. The method for hoisting the newly-added pile foundation reinforcement cage in the narrow space under the bridge reinforcing bridge according to claim 1, characterized in that: the hoisting device (5) is a crane or a winch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011410799.3A CN112554082B (en) | 2020-12-04 | 2020-12-04 | Method for hoisting newly-added pile foundation reinforcement cage in narrow space under bridge reinforcement bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011410799.3A CN112554082B (en) | 2020-12-04 | 2020-12-04 | Method for hoisting newly-added pile foundation reinforcement cage in narrow space under bridge reinforcement bridge |
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| CN112554082A true CN112554082A (en) | 2021-03-26 |
| CN112554082B CN112554082B (en) | 2022-11-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115771836A (en) * | 2022-11-30 | 2023-03-10 | 中铁四局集团有限公司 | Cantilever bridge fabrication machine lifting equipment |
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