CN111021269A - Bailey beam dismantling construction method in bridge engineering - Google Patents
Bailey beam dismantling construction method in bridge engineering Download PDFInfo
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- CN111021269A CN111021269A CN202010032341.2A CN202010032341A CN111021269A CN 111021269 A CN111021269 A CN 111021269A CN 202010032341 A CN202010032341 A CN 202010032341A CN 111021269 A CN111021269 A CN 111021269A
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- bailey
- bailey beam
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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
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Abstract
A Bailey beam dismantling construction method in bridge engineering is characterized by comprising the following steps: a. b, starting a support descending device at two ends of the Bailey beam, c, dividing a plurality of Bailey beams into every two Bailey beams as a group, enabling channel steel to penetrate between the ends of the two Bailey beams in the group for series connection, d, jacking the Bailey beams, providing a plurality of round steel to be laid on the I-steel in parallel, e, installing a winch at each row of I-steel ends at two ends of the Bailey beams respectively, so that a crane arranged above the bridge deck can hoist and transport the Bailey beams, and the Bailey beams can be quickly dismantled. The Bailey beam dismantling construction method in bridge engineering has the advantages that the Bailey beam single beam can be integrally moved, and is hoisted and dismantled to realize quick dismantling, the engineering quality is safe and reliable, high-altitude operation personnel are reduced, potential safety hazards are reduced, the construction period is shortened, and the construction cost is indirectly saved.
Description
Technical Field
The invention relates to a Bailey beam, in particular to a Bailey beam dismantling construction method in bridge engineering.
Background
Today, with the rapid development of bridge engineering, the beret beam technology has become an indispensable part in bridge engineering construction. But still have following shortcoming in bailey beam demolish speed, and improve bailey beam body turnover availability factor:
(1) the Bailey beam body needs to be disassembled and dismantled;
(2) the labor intensity of the high-altitude operation personnel is high, and the potential safety hazard factor is high;
(3) and the dismantling operation time is long, so that the construction period is influenced.
Therefore, the known method for dismantling the bailey beam in the bridge engineering has various inconveniences and problems.
Disclosure of Invention
The invention aims to provide a quick, safe and reliable Bailey beam dismantling construction method in bridge engineering.
In order to achieve the purpose, the technical solution of the invention is as follows:
a Bailey beam dismantling construction method in bridge engineering is characterized by comprising the following steps:
a. when the pouring of the bridge slab concrete structure in the bridge engineering is finished and the support scaffold dismantling permission is met, the Bailey beam is dismantled;
b. starting the support descending devices at the two ends of the Bailey beam to ensure that the whole Bailey beam and the bottom surface of the bridge descend for a certain distance;
c. dividing a plurality of Bailey beams into every two Bailey beams into a group, enabling channel steel to penetrate between the ends of the two Bailey beams in the group for series connection, arranging a jack between the two Bailey beams, arranging the bottom end of the jack on the upper surfaces of a plurality of rows of I-shaped steels below the Bailey beams, arranging the top end of the jack on the bottom of the channel steel, utilizing the jack to enable the ends of the Bailey beams to be raised, enabling the Bailey beams to be away from the I-shaped steels below for a certain distance, and sequentially jacking the ends of the other Bailey beams by adopting the same method;
d. after the Bailey beam is jacked up, a plurality of round steel is provided and laid on the I-shaped steel in parallel, and two ends of the round steel are welded and fixed on the I-shaped steel; coating butter on the surface of the round steel, and then descending the end of the Bailey beam to be placed on the round steel;
e. and the winches are used for sequentially drawing each Bailey beam to a hoisting position beside the concrete structure of the bridge slab so as to facilitate the hoisting and transporting of the Bailey beam by a crane arranged above the bridge slab and the rapid completion of the dismantling of the Bailey beam.
The method for dismantling the Bailey beam in the bridge engineering can be further realized by adopting the following technical measures.
In the method, the distance between the whole Bailey beam and the bottom surface of the bridge is less than or equal to 200 mm.
In the method, the channel steel is ≥ 15# channel steel.
The method wherein the jack is a hydraulic jack.
In the method, the distance between the end of the beret beam and the I-shaped steel supporting surface is less than or equal to 50 mm.
In the method, the diameter of the round steel is more than or equal to 10 mm.
In the method, the type of the winch is a JK-1T winch.
By adopting the technical scheme, the Bailey beam dismantling construction method in bridge engineering has the following advantages:
1. the Bailey beam single beam can be integrally moved, hoisted and disassembled to realize quick disassembly;
2. the engineering quality is safe and reliable, the number of high-altitude operation personnel is reduced, and the potential safety hazard is reduced;
3. the construction period is shortened, and the construction cost is indirectly saved.
Drawings
Fig. 1 is a schematic diagram of a Bailey beam grouping and lifting jack for jacking up ends of Bailey beams according to an embodiment of the invention;
fig. 2 is a schematic diagram of sliding, lifting and dismantling of a beret beam according to an embodiment of the invention.
In the figure: 1 Bailey beam, 2 bridge plates, 3 channel steel, 4I-steel, 5 upright posts, 6 jacks, 7 truck cranes and 8 windlasses.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
Example 1
The invention discloses a Bailey beam dismantling construction method in bridge engineering, which comprises the following steps:
a. and (4) pouring the bridge plate structure in the bridge engineering, and starting the Bailey beam to be dismantled after the support scaffold is met with dismantling permission.
b. And starting the two ends of the Bailey beam 1 to support the descending device, so that the Bailey beam integrally descends to a distance of about 200mm from the bottom surface of the bridge.
c. Two ends of the Bailey beam form a group and penetrate through a No. 15 channel steel 3 to be connected in series, the hydraulic jack 6 is utilized between the two beams to jack the ends of the Bailey beam to be about 50mm away from the supporting surface of a lower I-shaped steel 4, the I-shaped steel is supported by a lower upright post 5, and the other ends of the Bailey beam are sequentially jacked up by adopting the same method; referring to fig. 1, fig. 1 is a schematic diagram of a group of beret beams and a jack for jacking the ends of the beret beams according to an embodiment of the present invention. As shown, the sets of beret beams are jacked up.
d. After the Bailey beam is jacked up, the two ends of the I-steel which is in contact with the Bailey beam are fixed by spot welding, and grease is smeared on the surface of the round steel with the diameter of 10mm, so that the Bailey beam can play a role in lubricating when moving, and the friction between the Bailey beam and the I-steel is reduced;
e. a winch 8 with the model of JK-1T is arranged at the end head of each row of I-steel at the two ends of the Bailey beam respectively, and the winch and the I-steel are connected by bolts and can be repeatedly disassembled and assembled when needed. The winch is used for sequentially drawing and extracting the Bailey beam to a hoisting position so as to facilitate hoisting and transporting of the truck crane 7 arranged on the bridge plate 2. Fig. 2 is a schematic diagram of sliding, lifting and dismantling of a beret beam according to an embodiment of the invention.
The method for dismantling the Bailey beam in the bridge engineering has the advantages that a sliding and hoisting combined mode is adopted, so that the Bailey beam single beam can be integrally moved, hoisted and dismantled to realize quick dismantling, overhead workers are reduced, potential safety hazards are reduced, the compression construction period is shortened, and the construction cost is indirectly saved.
The Bailey beam dismantling construction method in bridge engineering is applied to relevant projects such as S330 and G234 highway engineering in leaf county, has obvious effect, and obtains sufficient certainty of construction units, supervision units and construction units.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Accordingly, all equivalents are intended to fall within the scope of the invention, which is defined in the claims.
Claims (7)
1. A Bailey beam dismantling construction method in bridge engineering is characterized by comprising the following steps:
a. when the pouring of the bridge slab concrete structure in the bridge engineering is finished and the support scaffold dismantling permission is met, the Bailey beam is dismantled;
b. starting the support descending devices at the two ends of the Bailey beam to ensure that the whole Bailey beam and the bottom surface of the bridge descend for a certain distance;
c. dividing a plurality of Bailey beams into every two Bailey beams into a group, enabling channel steel to penetrate between the ends of the two Bailey beams in the group for series connection, arranging a jack between the two Bailey beams, arranging the bottom end of the jack on the upper surfaces of a plurality of rows of I-shaped steels below the Bailey beams, arranging the top end of the jack on the bottom of the channel steel, utilizing the jack to enable the ends of the Bailey beams to be raised, enabling the Bailey beams to be away from the I-shaped steels below for a certain distance, and sequentially jacking the ends of the other Bailey beams by adopting the same method;
d. after the Bailey beam is jacked up, a plurality of round steel is provided and laid on the I-shaped steel in parallel, and two ends of the round steel are welded and fixed on the I-shaped steel; coating butter on the surface of the round steel, and then descending the end of the Bailey beam to be placed on the round steel;
e. and the winches are used for sequentially drawing each Bailey beam to a hoisting position beside the concrete structure of the bridge slab so as to facilitate the hoisting and transporting of the Bailey beam by a crane arranged above the bridge slab and the rapid completion of the dismantling of the Bailey beam.
2. The method for dismantling the Bailey beam in the bridge engineering according to claim 1, wherein the Bailey beam is entirely lowered to a distance of 200mm or less from the bottom surface of the bridge.
3. The method for dismantling the Bailey beam in the bridge engineering according to claim 1, wherein the channel steel is not less than 15# channel steel.
4. The method for dismantling the beret beam in bridge engineering according to claim 1, wherein the jack is a hydraulic jack.
5. The method for dismantling the Bailey beam in the bridge engineering according to claim 1, wherein a distance between an end of the Bailey beam and a supporting surface of the I-steel is not more than 50 mm.
6. The method for dismantling the Bailey beam in the bridge engineering according to claim 1, wherein the diameter of the round steel is not less than 10 mm.
7. The method for Bailey beam dismantling construction in bridge engineering according to claim 1, wherein the winch is a JK-1T winch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010032341.2A CN111021269A (en) | 2020-01-13 | 2020-01-13 | Bailey beam dismantling construction method in bridge engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010032341.2A CN111021269A (en) | 2020-01-13 | 2020-01-13 | Bailey beam dismantling construction method in bridge engineering |
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| Publication Number | Publication Date |
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| CN111021269A true CN111021269A (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010032341.2A Pending CN111021269A (en) | 2020-01-13 | 2020-01-13 | Bailey beam dismantling construction method in bridge engineering |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111576258A (en) * | 2020-05-25 | 2020-08-25 | 中铁建大桥工程局集团第四工程有限公司 | Method for dismantling Bailey beam support for road crossing and river crossing |
| CN111877165A (en) * | 2020-07-08 | 2020-11-03 | 广西路建工程集团有限公司 | Bailey beam translation device in limited space and construction method thereof |
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| CN201857762U (en) * | 2010-11-16 | 2011-06-08 | 中铁十局集团第三建设有限公司 | Shifting device |
| CN105484164A (en) * | 2015-12-30 | 2016-04-13 | 中交第二航务工程局有限公司 | Spanning type bailey beam bracket and construction method thereof |
| CN205529923U (en) * | 2016-01-28 | 2016-08-31 | 中铁上海工程局集团华海工程有限公司 | Sliding device of demolising of beiLei beam |
| CN107366231A (en) * | 2017-07-24 | 2017-11-21 | 中交二航局南方工程有限公司 | Navigable truss removes support body and navigable truss removes system |
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2020
- 2020-01-13 CN CN202010032341.2A patent/CN111021269A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201857762U (en) * | 2010-11-16 | 2011-06-08 | 中铁十局集团第三建设有限公司 | Shifting device |
| CN105484164A (en) * | 2015-12-30 | 2016-04-13 | 中交第二航务工程局有限公司 | Spanning type bailey beam bracket and construction method thereof |
| CN205529923U (en) * | 2016-01-28 | 2016-08-31 | 中铁上海工程局集团华海工程有限公司 | Sliding device of demolising of beiLei beam |
| CN107366231A (en) * | 2017-07-24 | 2017-11-21 | 中交二航局南方工程有限公司 | Navigable truss removes support body and navigable truss removes system |
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| 许智林: "跨沈海高速某现浇梁无中支墩支架施工技术", 《福建建筑》 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111576258A (en) * | 2020-05-25 | 2020-08-25 | 中铁建大桥工程局集团第四工程有限公司 | Method for dismantling Bailey beam support for road crossing and river crossing |
| CN111877165A (en) * | 2020-07-08 | 2020-11-03 | 广西路建工程集团有限公司 | Bailey beam translation device in limited space and construction method thereof |
| CN111877165B (en) * | 2020-07-08 | 2022-01-28 | 广西路建工程集团有限公司 | Bailey beam translation device in limited space and construction method thereof |
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Application publication date: 20200417 |