CN113202027A - Method for quickly dismantling cast-in-place beam steel pipe pile support - Google Patents
Method for quickly dismantling cast-in-place beam steel pipe pile support Download PDFInfo
- Publication number
- CN113202027A CN113202027A CN202110371696.9A CN202110371696A CN113202027A CN 113202027 A CN113202027 A CN 113202027A CN 202110371696 A CN202110371696 A CN 202110371696A CN 113202027 A CN113202027 A CN 113202027A
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- support
- steel pipe
- pipe pile
- hanging rod
- jack
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a method for quickly dismantling a cast-in-place beam steel pipe pile support, wherein preformed holes are arranged at positions, which are opposite to two ends of a bearing beam of a lower steel pipe pile support, of two sides of a beam body, when the support is dismantled, a cross beam is erected at the tops of two opposite preformed holes of a cross bridge on the top surface of the beam body, a pad beam is arranged on the cross beam corresponding to each preformed hole, two through jacks are erected at the tops of two ends of the pad beam, and a shoulder pole beam is erected at the tops of the two jacks; a hanging rod penetrates through each preformed hole, the lower end of the hanging rod is anchored with a support bearing beam, the upper end of the hanging rod penetrates through the cross beam, the pad beam, the space between the two jacks and the shoulder pole beam, a lower nut is screwed on the top surface of the pad beam on the hanging rod, and an upper nut is screwed on the top surface of the shoulder pole beam; firstly, dismantling the steel pipe pile of the support, and then controlling the jack to integrally drop the upper structure of the support to the ground. The invention has the advantages of extremely high construction speed, low cost and high safety.
Description
Technical Field
The invention belongs to the technical field of bridge construction, and relates to a method for dismantling a steel pipe pile support after cast-in-place beam construction is carried out by adopting the steel pipe pile support.
Background
The cast-in-place beam of the bridge is usually constructed by adopting a full support or a steel pipe pile support. When the steel pipe pile support is used for construction, a sand unloading cylinder is usually arranged at the top of the steel pipe pile, a bearing beam is erected on the sand unloading cylinder, a Bailey beam is erected on the bearing beam, a distribution beam is erected on the Bailey beam, and a cast-in-place beam construction template is installed on the distribution beam. And when the support is dismantled after the cast-in-place beam is constructed, the height of the support is reduced by discharging sand from the sand discharging barrel, then the upper structure of the support is dismantled from top to bottom in sequence by adopting hoisting equipment, and finally the steel pipe pile is dismantled. The existing support dismantling method is slow in construction, and when the sand discharging barrel descends, the sand discharging amount of each sand barrel needs to be synchronously controlled to be consistent, so that the inclination of the upper structure of the platform is avoided, and the construction difficulty is high; constructors need to operate at high altitude, and risks are high.
Disclosure of Invention
The invention aims to provide a support dismantling method with high construction speed and low construction risk aiming at the problems of the existing steel pipe pile support dismantling method.
The technical scheme of the invention is as follows:
a method for quickly dismantling a cast-in-place beam steel pipe pile support is characterized by comprising the following steps:
(1) when the cast-in-place beam is constructed, preformed holes are arranged at the positions of two sides of the beam body, which are opposite to two ends of each bearing beam of the lower steel pipe pile support;
(2) after the beam body concrete reaches the form removal strength, erecting double-spliced I-shaped steel cross beams at the tops of two opposite preformed holes in the transverse bridge direction of the top surface of the beam body, erecting double-spliced I-shaped steel backing beams on the cross beams corresponding to each preformed hole in the bridge direction, erecting two penetrating jacks at the tops of two ends of each backing beam, and erecting a shoulder pole beam at the tops of the two jacks;
(3) a hanging rod penetrates through each preformed hole, the lower end of the hanging rod is anchored with a support bearing beam, the upper end of the hanging rod sequentially penetrates through the cross beam, the pad beam, the space between the two jacks and the shoulder pole beam from bottom to top, a lower nut is screwed on the top surface of the pad beam on the hanging rod, and an upper nut is screwed on the top surface of the shoulder pole beam;
(4) dismantling the steel pipe pile of the support to suspend the lower part of the bearing beam of the support in the air, and completely lifting the upper structure of the support by a lifting rod;
(5) the upper nuts are rotated upwards on the hanging rod by the height of one stroke of the jack, and then the shoulder pole beam is jacked upwards by the jack by one stroke; the lower nuts are rotated upwards by the height of one stroke of the jack, then the jack returns oil, the height of the suspender is reduced by one jack stroke, and the upper structure of the support lifted by the suspender is reduced along with the height of the lower nuts;
(6) and (5) repeatedly repeating the step until the support superstructure is descended to the ground.
According to the invention, the upper structure of the support is lifted by fully utilizing the supporting force provided by the constructed cast-in-place beam, and after the steel pipe pile is removed, the upper structure of the support can be integrally lowered to the ground without dismantling rod pieces one by one or hoisting equipment, so that the construction speed is extremely high and the investment is low; the risk that the component was demolishd to reducible personnel on the support brings, and the security is high.
Drawings
FIG. 1 is a schematic cross-bridging view of a support beam being lifted by a boom;
FIG. 2 is a schematic representation of the forward direction of the carrier beam through the boom hoist;
fig. 3 is a partially enlarged view of fig. 2.
Detailed Description
As shown in fig. 1, the lower structure of the cast-in-place beam construction support is a steel pipe pile 1, and the upper structure of the support comprises a bearing beam 2 erected at the top of the steel pipe pile, a bailey beam 3 erected at the top of the bearing beam, a distribution beam 4 erected at the top of the bailey beam, a template installed on the distribution beam, and the like.
The method for quickly dismantling the steel pipe pile support comprises the following steps:
(1) when the cast-in-place beam 5 is constructed, preformed holes are arranged at the positions of two sides of the beam body, which are opposite to two ends of each bearing beam of the lower steel pipe pile support;
(2) as shown in fig. 1, 2 and 3, after the beam concrete reaches the form removal strength, double-spliced I-shaped steel cross beams 6 are erected at the tops of two opposite preformed holes on the top surface of the beam in the transverse bridge direction, double-spliced I-shaped steel backing beams 7 are erected on the cross beams corresponding to each preformed hole in the bridge direction, two penetrating jacks 8 are erected at the tops of two ends of each backing beam, and a shoulder pole beam 9 is erected at the tops of the two jacks;
(3) a hanging rod 10 penetrates through each preformed hole, the lower end of the hanging rod is anchored with a support bearing beam 2, the upper end of the hanging rod sequentially penetrates through a cross beam 6, a pad beam 7, two jacks 8 and a shoulder pole beam 9 from bottom to top, a lower nut 11 is screwed on the top surface of the pad beam on the hanging rod, and an upper nut 12 is screwed on the top surface of the shoulder pole beam;
(4) dismantling the support steel pipe pile 1, reducing the height of a unloading device such as a sand cylinder and the like under the condition that the unloading device such as the sand cylinder is installed at the top of the steel pipe pile, taking down the unloading device, and then separating and moving away the bottom of the steel pipe pile from a support foundation; and directly cutting off the steel pipe pile under the condition that the bearing beam is directly installed at the top of the steel pipe pile. After the steel pipe pile is dismantled, the lower part of a bearing beam of the support is suspended, and the upper structure of the support is completely lifted by a suspender 10;
(5) the upper nuts 12 are rotated upwards on the suspension rod by the height of one stroke of the jack, and then the carrying pole beam 9 is lifted upwards by the jack 8 by one stroke; each lower nut 11 is rotated upwards by the height of one stroke of the jack, then the jack returns oil, the height of the suspender 10 is reduced by one jack stroke, and the upper structure of the bracket is reduced by the corresponding height;
(6) and (5) repeating the step until the support superstructure is descended to the ground.
Claims (2)
1. A method for quickly dismantling a cast-in-place beam steel pipe pile support is characterized by comprising the following steps:
(1) when the cast-in-place beam is constructed, preformed holes are arranged at the positions of two sides of the beam body, which are opposite to two ends of each bearing beam of the lower steel pipe pile support;
(2) after the beam body concrete reaches the form removal strength, erecting double-spliced I-shaped steel cross beams at the tops of two opposite preformed holes in the transverse bridge direction of the top surface of the beam body, erecting double-spliced I-shaped steel backing beams on the cross beams corresponding to each preformed hole in the bridge direction, erecting two penetrating jacks at the tops of two ends of each backing beam, and erecting a shoulder pole beam at the tops of the two jacks;
(3) a hanging rod penetrates through each preformed hole, the lower end of the hanging rod is anchored with a support bearing beam, the upper end of the hanging rod sequentially penetrates through the cross beam, the pad beam, the space between the two jacks and the shoulder pole beam from bottom to top, a lower nut is screwed on the top surface of the pad beam on the hanging rod, and an upper nut is screwed on the top surface of the shoulder pole beam;
(4) dismantling the steel pipe pile of the support to suspend the lower part of the bearing beam of the support in the air, and completely lifting the upper structure of the support by a lifting rod;
(5) the upper nuts are rotated upwards on the hanging rod by the height of one stroke of the jack, and then the shoulder pole beam is jacked upwards by the jack by one stroke; the lower nuts are rotated upwards by the height of one stroke of the jack, then the jack returns oil, the height of the suspender is reduced by one jack stroke, and the upper structure of the support lifted by the suspender is reduced along with the height of the lower nuts;
(6) and (5) repeatedly repeating the step until the support superstructure is descended to the ground.
2. The method for quickly dismantling the cast-in-place beam steel pipe pile support according to claim 1, characterized in that: when the support steel pipe pile is dismantled in the step (4), under the condition that the unloading device is installed at the top of the steel pipe pile, the height of the unloading device is reduced, the unloading device is taken down, and then the bottom of the steel pipe pile is separated from the supporting foundation and moved away; and cutting off the steel pipe pile under the condition that the bearing beam is directly installed at the top of the steel pipe pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110371696.9A CN113202027A (en) | 2021-04-07 | 2021-04-07 | Method for quickly dismantling cast-in-place beam steel pipe pile support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110371696.9A CN113202027A (en) | 2021-04-07 | 2021-04-07 | Method for quickly dismantling cast-in-place beam steel pipe pile support |
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| Publication Number | Publication Date |
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| CN113202027A true CN113202027A (en) | 2021-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110371696.9A Pending CN113202027A (en) | 2021-04-07 | 2021-04-07 | Method for quickly dismantling cast-in-place beam steel pipe pile support |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114134812A (en) * | 2021-10-26 | 2022-03-04 | 山东高速工程建设集团有限公司 | Construction method of in-water support dismantling system for cast-in-place bridge steel pipe pile |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06136722A (en) * | 1992-10-23 | 1994-05-17 | Sho Bond Constr Co Ltd | Bridge floor plate disassembly method and device therefor |
| CN103669902A (en) * | 2013-12-31 | 2014-03-26 | 中建铁路建设有限公司 | Cast-in-place beam support truss integral dropping and dismounting tool and construction method thereof |
| CN203669407U (en) * | 2013-12-31 | 2014-06-25 | 中建铁路建设有限公司 | Cast-in-place beam supporting truss overall-falling dismantling tool |
| WO2017088117A1 (en) * | 2015-11-25 | 2017-06-01 | 陈修缘 | Lift-type construction system for use in constructing structure of upper portion of bridge and construction method thereof |
| CN107892238A (en) * | 2017-11-11 | 2018-04-10 | 中铁三局集团华东建设有限公司 | A kind of lowering equipment and method for Bailey beam |
| CN112482232A (en) * | 2020-11-30 | 2021-03-12 | 中交第一航务工程局有限公司 | Beam falling system for dismantling box girder Bailey beam support of urban railway and construction method |
-
2021
- 2021-04-07 CN CN202110371696.9A patent/CN113202027A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06136722A (en) * | 1992-10-23 | 1994-05-17 | Sho Bond Constr Co Ltd | Bridge floor plate disassembly method and device therefor |
| CN103669902A (en) * | 2013-12-31 | 2014-03-26 | 中建铁路建设有限公司 | Cast-in-place beam support truss integral dropping and dismounting tool and construction method thereof |
| CN203669407U (en) * | 2013-12-31 | 2014-06-25 | 中建铁路建设有限公司 | Cast-in-place beam supporting truss overall-falling dismantling tool |
| WO2017088117A1 (en) * | 2015-11-25 | 2017-06-01 | 陈修缘 | Lift-type construction system for use in constructing structure of upper portion of bridge and construction method thereof |
| CN107892238A (en) * | 2017-11-11 | 2018-04-10 | 中铁三局集团华东建设有限公司 | A kind of lowering equipment and method for Bailey beam |
| CN112482232A (en) * | 2020-11-30 | 2021-03-12 | 中交第一航务工程局有限公司 | Beam falling system for dismantling box girder Bailey beam support of urban railway and construction method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114134812A (en) * | 2021-10-26 | 2022-03-04 | 山东高速工程建设集团有限公司 | Construction method of in-water support dismantling system for cast-in-place bridge steel pipe pile |
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