CN114045759A - Method for erecting cover beam dismantling platform of old bridge in water - Google Patents
Method for erecting cover beam dismantling platform of old bridge in water Download PDFInfo
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- CN114045759A CN114045759A CN202111354878.1A CN202111354878A CN114045759A CN 114045759 A CN114045759 A CN 114045759A CN 202111354878 A CN202111354878 A CN 202111354878A CN 114045759 A CN114045759 A CN 114045759A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 238000010276 construction Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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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
The invention relates to an old bridge dismantling construction process, in particular to a method for erecting a cover beam dismantling platform of an old bridge in water, which comprises the following steps: s1: erecting tie beam supports; s2: erecting a platform main beam; s3: erecting a platform distribution beam; s4: supporting a lifting platform; s5: installing a hoop; s6: an operating space is established. The method for erecting the cover beam dismantling platform for the old bridge in water comprises the steps of pre-splicing the platform support on a tie beam, lifting the pre-spliced platform support to the bottom of the cover beam for temporary fixation, splicing a hoop on the top of the tie beam in the same mode, fixing the hoop by passing high-strength bolts after lifting the pre-spliced platform support to a designed height, and fixing the platform support and the hoop to realize erection of the platform.
Description
Technical Field
The invention relates to an old bridge dismantling construction process, in particular to a method for erecting a cover beam dismantling platform of an old bridge in water.
Background
Along with the continuous development of urban economy, the existing road span can not meet the traffic demand gradually, the projects of reconstruction and expansion on the existing roads are increased gradually, at present, when the capping beam of the old bridge in water is removed, a construction platform needs to be established at a position close to the capping beam, an operation space for removing the capping beam is provided for constructors, the existing construction platform is generally formed by combining a steel member and a split mounting type hoop, when the existing construction platform is erected, the hoop needs to be lifted to the position, close to the top of a pier column, of the bottom of the capping beam to be installed, the hoop is clamped on the pier column and connected through bolts, and then the steel member is erected, bound and installed on the hoop to form the construction platform.
However, because the pier stud of the old bridge in the water is located on the water, no ground support is needed during installation of the hoop, hoisting equipment needs to be adopted to lift the hoop in place, the bolts are worn to be installed in the suspended state of the hoop, the danger is large, the construction difficulty is large, and the construction progress is seriously influenced.
Therefore, a technical scheme is urgently needed at present to solve the technical problems that the construction progress is influenced by the difficulty in erecting the construction platform for dismantling the old bridge capping beam in the existing water, the danger is high, the construction difficulty is high and the construction progress is influenced.
Disclosure of Invention
The invention aims to: aiming at the problems in the background technology, a method for building an underwater old bridge bent cap dismantling platform is provided.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method for building a platform for dismantling a cover beam of an old bridge in water comprises the following steps:
s1: erecting a tie beam support: arranging a plurality of widening beams on the tie beam, binding and fixing each widening beam with the tie beam, arranging all the widening beams along the longitudinal direction of the bridge, and extending two ends of each widening beam to exceed the width of the capping beam at least;
s2: building a platform main beam: arranging a main beam on the widening beam, wherein the main beam is transversely arranged along the bridge, and two ends of the main beam at least extend beyond the length of the capping beam;
s3: building a platform distribution beam: arranging a plurality of distribution beams on the main beam, fixing each distribution beam with the main beam respectively to form a platform support, arranging all the distribution beams longitudinally along the bridge, arranging all the distribution beams at equal intervals, and extending two ends of all the distribution beams at least to exceed the width of the capping beam;
s4: supporting a lifting platform: lifting the platform support to a set height at the bottom of the cover beam through a hoisting device;
s5: installing a hoop: temporarily installing an anchor ear at a position, corresponding to the pier stud, of the tie beam, lifting the anchor ear to the bottom of the support of the attaching platform along the pier stud through lifting equipment when the anchor ear is in a loose state, and then locking the anchor ear;
s6: establishing an operation space: the hoop and the platform support are fixedly connected, and the support plate and the guardrail are arranged on the platform support to form a platform operation space.
The method for erecting the cover beam dismantling platform for the old bridge in water comprises the steps of pre-splicing the platform support on a tie beam, lifting the pre-spliced platform support to the bottom of the cover beam for temporary fixation, splicing a hoop on the top of the tie beam in the same mode, fixing the hoop by passing high-strength bolts after lifting the pre-spliced platform support to a designed height, and fixing the platform support and the hoop to realize erection of the platform.
In the preferred embodiment of the present invention, in S3, the distribution beams are distributed between two pillars and outside the pillars. The distribution beam is used as a supporting base of the platform and is respectively arranged on two sides of the pier stud, so that the formed platform is stable.
In the preferred embodiment of the present invention, the platform support is lifted to the bottom of the attachment cap beam for temporary fixation in S4, and the platform support is moved down to be placed on the hoop in S6. The position of the erected platform is limited through the installation position of the hoop, so that the erected platform meets the use requirement.
As a preferred embodiment of the invention, the distribution beam length is at least twice the width of the capping beam. The built platform can provide a space for the constructors to walk.
As a preferred scheme of the invention, the widening beam, the platform main beam and the distribution beam are all steel structural members.
As a preferred scheme of the invention, the widening beam, the platform main beam and the distribution beam are all I-shaped steel or double-spliced I-shaped steel.
As a preferable scheme of the invention, the hoisting equipment comprises a chain block, and the chain block is positioned on the new bridge at the side of the old bridge or positioned at the top of the cover beam. Through set up chain block at the bent cap top, simple structure can be relatively easy promote and fix temporarily the platform support.
As a preferred aspect of the present invention, the hoisting device comprises a truck crane, and the truck crane is located on a new bridge beside an old bridge. On the construction site with the conditions, the platform support and the hoop are lifted by adopting the truck crane, and various lifting equipment can be adopted to be matched according to actual conditions, so that the platform support and the hoop are lifted more easily, and the height and the strength of the erected platform meet the use requirements.
As a preferable aspect of the present invention, in S5, the position of the anchor ear is changed by inserting a bolt when the anchor ear connection portion is positioned on the tie beam and rotating the anchor ear along the pier.
As a preferable aspect of the present invention, the platform operating space is provided around the capping beam in S6.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
through what carry out the platform support on the tie beam piece together in advance, promote again to the bent cap bottom temporarily fixed, then the staple bolt is assembled at the tie beam top to same mode, promote to wear high-strength bolt fastening after the design height, it is fixed with the staple bolt to support the platform at last, realize setting up of platform, make full use of tie beam upper space, the process of setting up that the old bridge bent cap of messenger aquatic demolishs the platform is safe, quick, avoided the staple bolt to wear to establish bolt fastening's difficulty and danger in unsettled state, realized demolishs the safety of platform to the old bridge bent cap of aquatic, set up fast.
Drawings
FIG. 1 is a schematic flow chart of an underwater old bridge capping beam dismantling platform and a building method thereof;
FIG. 2 is a diagram showing the effect of the use of the set-up platform in example 1;
fig. 3 is a schematic structural view of the anchor ear in embodiment 1.
Icon:
1-capping beam, 2-pier stud, 3-tie beam, 4-widening beam, 5-main beam, 6-distribution beam and 7-hoop.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
As shown in fig. 1, a platform for removing a bent cap of an old bridge in water and a method for erecting the platform for removing the bent cap of the old bridge in water comprise the following steps:
s1: and (3) erecting a tie beam 3 for supporting: the tie beam 3 is provided with a plurality of widening beams 4, each widening beam 4 is bound and fixed with the tie beam 3, all the widening beams 4 are arranged along the longitudinal direction of the bridge, and two ends of each widening beam 4 at least extend to exceed the width of the capping beam 1.
Specifically, the widening beams 4 are i-shaped steel and are arranged longitudinally along the bridge, the widening beams 4 are arranged in parallel at equal intervals, and the width and the area of the top of the widening beam 3 which can be used for supporting are widened.
S2: and (3) erecting a platform main beam 5: set up girder 5 on widening roof beam 4, girder 5 transversely sets up along the bridge, and girder 5 both ends extend beyond bent cap 1 length at least.
Specifically, the main beam 5 is I45a I-steel, the main beam 5 is transversely arranged along the bridge, and the length of the main beam 5 extends to two sides of the length of the bent cap 1 and exceeds two ends of the bent cap 1 by at least two meters.
Specifically, the number of the main beams 5 is preferably two, and the two main beams 5 are respectively attached to the outer side of the pier 2 to clamp the pier 2 between the two main beams 5.
Specifically, the main beam 5 and the widened beam 4, and the main beam 5 and the pier stud 2 are temporarily fixed in a binding mode respectively.
S3: building a platform distribution beam 6: the main beam 5 is provided with a plurality of distribution beams 6, each distribution beam 6 is fixed with the main beam 5 to form a platform support, all the distribution beams 6 are arranged along the longitudinal direction of the bridge, all the distribution beams 6 are arranged at equal intervals, and two ends of all the distribution beams 6 at least extend to exceed the width of the cover beam 1.
Specifically, the distribution beams 6 are I16I-shaped steel, the distribution beams 6 are longitudinally arranged in parallel at equal intervals along the bridge, two ends of the distribution beams are respectively overlapped on the main beam 5, and a transversely and longitudinally staggered fence type structure is formed at the top of the tie beam 3.
Specifically, the tie beam 3 between the two piers 2 and the main beam 5 outside the piers 2 are respectively provided with the distribution beam 6, so that the platform can be established in the spaces between the two piers 2 and the spaces on two sides outside the piers 2.
Specifically, the distribution beam 6 and the main beam 5 are welded, so that the connection strength of the main beam 5 and the distribution beam 6 meets the maximum stress of the platform in the use state.
S4: supporting a lifting platform: and lifting the platform support to a set height at the bottom of the cover beam 1 through a hoisting device.
Specifically, before the hoisting equipment is used, the method further comprises the step of erecting the hoisting equipment at the top of the cover beam 1, wherein the hoisting equipment can be a truck crane and/or a chain block, can lift the platform support to the bottom of the cover beam 1, and temporarily fix the platform support.
S5: installing a hoop 7: hoop 7 is installed temporarily in the department that the tie beam 3 corresponds pier stud 2, when hoop 7 is in the state of laxing, through lifting by crane equipment, promotes hoop 7 to laminating platform support bottom along pier stud 2, locks hoop 7 again.
It is specific, carry out the bolt when staple bolt 7 is connected the position and is located tie beam 3 and wear to establish, rotate staple bolt 7, the change is located tie beam 3 and connects the position, repeated bolt wears to establish again, accomplish staple bolt 7 and install on pier stud 2 temporarily, the bolt is worn to establish under the circumstances of not fastening after, staple bolt 7 is in the state of laxing, through lifting device such as chain block, can be smooth promote along pier stud 2, promote behind the design elevation, carry out the bolt-up, realize the installation of staple bolt 7.
Specifically, as shown in fig. 3, the hoop 7 is formed by clamping and matching two arc members, and a reinforcing plate for connecting bolts on the side of the hoop 7 is used as a foundation for supporting the main beam 5.
S6: establishing an operation space: the hoop 7 is fixedly connected with the platform support, and a support plate and a guardrail are arranged on the platform support to form a platform operation space.
Specifically, as shown in fig. 2, the supporting plate is preferably a steel mesh structure, and the guardrail is preferably a steel structure, so as to provide a simple and easily-formed and easily-removed platform for constructors, and provide a simple and stable platform for removing the bent cap 1 of the old bridge in water.
The method for erecting the cover beam dismantling platform for the old bridge in the water comprises the steps of pre-splicing the platform support on a tie beam 3, lifting the platform support to the bottom of a cover beam 1 for temporary fixation, splicing a hoop 7 on the top of the tie beam 3 in the same mode, fixing the hoop with high-strength bolts after lifting to a designed height, and fixing the platform support and the hoop 7 to realize erection of the platform, wherein the upper space of the tie beam 3 is fully utilized, so that the erection process of the cover beam dismantling platform for the old bridge in the water is safe and rapid, the difficulty and danger of the hoop in penetrating and fixing the bolts in a suspended state are avoided, in actual operation, the original platform erection process needing 3-4 days is reduced to within 1 day, and the safe and rapid erection of the cover beam dismantling platform for the old bridge in the water is realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A method for erecting a platform for dismantling an old bridge in water is characterized by comprising the following steps:
s1: erecting a tie beam support: arranging a plurality of widening beams on the tie beam, binding and fixing each widening beam with the tie beam, arranging all the widening beams along the longitudinal direction of the bridge, and extending two ends of each widening beam to exceed the width of the capping beam at least;
s2: building a platform main beam: arranging a main beam on the widening beam, wherein the main beam is transversely arranged along the bridge, and two ends of the main beam at least extend beyond the length of the capping beam;
s3: building a platform distribution beam: arranging a plurality of distribution beams on the main beam, fixing each distribution beam with the main beam respectively to form a platform support, arranging all the distribution beams longitudinally along the bridge, arranging all the distribution beams at equal intervals, and extending two ends of all the distribution beams at least to exceed the width of the capping beam;
s4: supporting a lifting platform: lifting the platform support to a set height at the bottom of the cover beam through a hoisting device;
s5: installing a hoop: temporarily installing an anchor ear at a position, corresponding to the pier stud, of the tie beam, lifting the anchor ear to the bottom of the support of the attaching platform along the pier stud through lifting equipment when the anchor ear is in a loose state, and then locking the anchor ear;
s6: establishing an operation space: the hoop and the platform support are fixedly connected, and the support plate and the guardrail are arranged on the platform support to form a platform operation space.
2. The method for erecting the platform for removing the used bridge capping beam in the water according to claim 1, wherein in S3, the distribution beams are distributed between two piers and outside the piers.
3. The method as claimed in claim 1, wherein the platform support is lifted to fit the bottom of the canopy beam for temporary fixing in S4, and the platform support is moved down to be placed on the hoop in S6.
4. The method for erecting a platform for dismantling the bent cap of an old bridge in water as set forth in claim 1, wherein the length of the distribution beam is at least twice as long as the width of the bent cap.
5. The method for erecting the platform for dismantling the capping beam of the old bridge in the water as claimed in claim 4, wherein the widening beam, the platform main beam and the distribution beam are all steel structural members.
6. The method for erecting the platform for dismantling the capping beam of the old bridge in the water as claimed in claim 5, wherein the widening beam, the platform main beam and the distribution beam are all I-beams or double-spliced I-beams.
7. The method for erecting the platform for dismantling the capping beam of the old bridge in the water as claimed in claim 1, wherein the hoisting equipment comprises a chain block, and the chain block is positioned on the new bridge at the side of the old bridge or on the top of the capping beam.
8. The method for erecting the platform for dismantling the capping beam of the old bridge in the water according to claim 7, wherein the hoisting equipment comprises a truck crane, and the truck crane is positioned on a new bridge beside the old bridge.
9. The method of claim 1, wherein the bolts are inserted when the anchor ear connection portion is positioned on the tie beam, and the position of the connection portion is changed by rotating the anchor ear along the pier stud at S5.
10. The method for erecting a platform for removing the used bridge cap beam in water as claimed in claim 1, wherein in S6, a platform operation space is provided around the cap beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111354878.1A CN114045759A (en) | 2021-11-16 | 2021-11-16 | Method for erecting cover beam dismantling platform of old bridge in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111354878.1A CN114045759A (en) | 2021-11-16 | 2021-11-16 | Method for erecting cover beam dismantling platform of old bridge in water |
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| CN114045759A true CN114045759A (en) | 2022-02-15 |
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| CN202111354878.1A Pending CN114045759A (en) | 2021-11-16 | 2021-11-16 | Method for erecting cover beam dismantling platform of old bridge in water |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040040695A (en) * | 2002-11-07 | 2004-05-13 | 주식회사 하이테크한상 | Temporary apparatus for dismantalement of slab |
| CN201762666U (en) * | 2010-09-16 | 2011-03-16 | 中铁十九局集团第二工程有限公司 | Capping construction support |
| CN202064285U (en) * | 2011-05-10 | 2011-12-07 | 吴江市明港道桥工程有限公司 | Round pier coping supporting device |
| CN203530848U (en) * | 2013-09-24 | 2014-04-09 | 中国十七冶集团有限公司 | Supporting support for bridge beam capping beam formwork |
| CN108842628A (en) * | 2018-07-09 | 2018-11-20 | 广西长长路桥建设有限公司 | In conjunction with the construction method of anchor ear and the non-floor-bracket of Bailey beam cast-in-situ box girder |
| CN109267494A (en) * | 2018-11-16 | 2019-01-25 | 中交路桥建设有限公司 | A kind of hood type hydraulic climbing formwork system and construction method for cylinder pier construction |
| CN111648229A (en) * | 2020-06-28 | 2020-09-11 | 中国三冶集团有限公司 | Assembled hoop platform for bent cap construction and mounting method thereof |
| CN212612011U (en) * | 2020-06-01 | 2021-02-26 | 吉林省信合智能工程设备研发制造有限公司 | Hoop support for cylindrical pier |
-
2021
- 2021-11-16 CN CN202111354878.1A patent/CN114045759A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040040695A (en) * | 2002-11-07 | 2004-05-13 | 주식회사 하이테크한상 | Temporary apparatus for dismantalement of slab |
| CN201762666U (en) * | 2010-09-16 | 2011-03-16 | 中铁十九局集团第二工程有限公司 | Capping construction support |
| CN202064285U (en) * | 2011-05-10 | 2011-12-07 | 吴江市明港道桥工程有限公司 | Round pier coping supporting device |
| CN203530848U (en) * | 2013-09-24 | 2014-04-09 | 中国十七冶集团有限公司 | Supporting support for bridge beam capping beam formwork |
| CN108842628A (en) * | 2018-07-09 | 2018-11-20 | 广西长长路桥建设有限公司 | In conjunction with the construction method of anchor ear and the non-floor-bracket of Bailey beam cast-in-situ box girder |
| CN109267494A (en) * | 2018-11-16 | 2019-01-25 | 中交路桥建设有限公司 | A kind of hood type hydraulic climbing formwork system and construction method for cylinder pier construction |
| CN212612011U (en) * | 2020-06-01 | 2021-02-26 | 吉林省信合智能工程设备研发制造有限公司 | Hoop support for cylindrical pier |
| CN111648229A (en) * | 2020-06-28 | 2020-09-11 | 中国三冶集团有限公司 | Assembled hoop platform for bent cap construction and mounting method thereof |
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