CN113897872A - Frame bridge jacking construction method - Google Patents
Frame bridge jacking construction method Download PDFInfo
- Publication number
- CN113897872A CN113897872A CN202111233070.8A CN202111233070A CN113897872A CN 113897872 A CN113897872 A CN 113897872A CN 202111233070 A CN202111233070 A CN 202111233070A CN 113897872 A CN113897872 A CN 113897872A
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- China
- Prior art keywords
- approach
- jacking
- channel
- construction
- frame
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- 238000010276 construction Methods 0.000 title claims abstract description 56
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 15
- 239000004567 concrete Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000004904 shortening Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Images
Classifications
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
- E01D19/083—Waterproofing of bridge decks; Other insulations for bridges, e.g. thermal ; Bridge deck surfacings
Abstract
The invention discloses a frame bridge jacking construction method. The method is characterized in that: the construction of the U-shaped channel of the approach channel and the prefabricated jacking frame adopts a parallel construction process, the U-shaped channel of the approach channel adjacent to the jacking frame is used as the back of the jacking construction, a reinforced concrete back is arranged at the front end of the U-shaped channel of the approach channel, the reinforced concrete back, a frame bridge working bottom plate and a concrete working bottom plate of the U-shaped channel of the approach channel are integrally formed when being poured, and the reinforced concrete back is anchored under a cushion layer; the number of the sections of the required U-shaped groove of the approach is obtained through theoretical calculation, and the aim of providing jacking counter force is achieved by adding a balance weight in the U-shaped groove of the approach; and arranging a post-pouring belt with the width of 1m between the two sections of U-shaped grooves of the rear approach, burying a water stop belt after the frame is jacked in, and finishing post-pouring belt and settlement joint construction. The invention utilizes the U-shaped groove of the approach as the jacking back, thereby greatly reducing the number of temporary projects and reducing the project investment, and simultaneously, the construction of the U-shaped groove of the approach and the prefabricated jacking frame is parallel construction, thereby shortening the construction period.
Description
Technical Field
The invention relates to a frame bridge jacking construction method, and belongs to the technical field of frame bridge construction.
Background
At present, urban roads, highways and the like are usually crossed with railways in an upper-span and lower-pass mode, and the upper-span railway bridge has relatively high construction cost and is less in use; underpass railways are increasingly being used due to their better economic benefits and traffic capacity. The frame bridge jacking construction is a common construction technical scheme, a bridge culvert is cast-in-place and prefabricated on one side of a railway, certain measures are taken for reinforcing and protecting the existing railway, a specially manufactured jacking frame bridge back pile and a specially manufactured back beam are used for providing counter force, and the culvert is jacked in place through a jack. The construction technology has small influence on railway operation, is safe and reliable, and is increasingly applied to railway business line construction. The back pile is temporary engineering, needs to be dismantled after the jacking engineering is finished, causes abandonment engineering, and construction cost is high, and the back pile influences the construction of approach engineering behind the frame bridge, therefore approach U type groove and prefabricated jacking frame construction adopt the flowing water construction usually, lead to the construction period extension.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the frame bridge construction method which is low in construction cost and capable of shortening the construction period.
The invention is realized by the following technical scheme: a frame bridge jacking construction method is characterized by comprising the following steps: the construction of the U-shaped channel of the approach channel and the prefabricated jacking frame adopts a parallel construction process, the U-shaped channel of the approach channel adjacent to the jacking frame is used as the back of the jacking construction, a reinforced concrete back is arranged at the front end of the U-shaped channel of the approach channel, the reinforced concrete back, a frame bridge working bottom plate and a concrete working bottom plate of the U-shaped channel of the approach channel are integrally formed when being poured, and the reinforced concrete back is anchored into the lower part of the cushion layer; the number of the sections of the required U-shaped groove of the approach is obtained through theoretical calculation, and the aim of providing jacking counter force is achieved by adding a balance weight in the U-shaped groove of the approach; and arranging a post-pouring belt with the width of 1m between the two sections of U-shaped grooves of the rear approach, burying a water stop belt after the frame is jacked in, and finishing post-pouring belt and settlement joint construction.
In the invention, the U-shaped groove of the approach engineering is taken as the back of the jacking engineering, so that the waste engineering can be avoided, the number of temporary engineering is greatly reduced, the investment is reduced, meanwhile, the jacking construction can be parallel to roads on two sides, and the construction period can be shortened. The reinforced concrete back arranged at the front end of the U-shaped groove of the approach is used for preventing the U-shaped groove of the approach from sliding and deviating due to counter force in the jacking process. Through setting up the post-cast strip, bury the waterstop underground after the frame top is advanced and is accomplished post-cast strip and subsiding joint construction, can guarantee the guidance way U type interbank subsiding joint stagnant water effect.
Furthermore, in order to ensure the size of the post-cast strip, a jack is arranged between the two U-shaped grooves of the approach channel on the post-cast strip. The jack can play the effect of keeping post-cast strip size, and after the jacking engineering is accomplished, if the size changes, can utilize the jack to adjust.
Furthermore, rubble or earthwork is filled in the U-shaped groove of the approach way to serve as a counterweight.
Furthermore, an anchor beam is arranged on the lower portion of the concrete working bottom plate of the U-shaped groove of the approach channel.
The invention has the beneficial effects that: the U-shaped groove of the guide way adjacent to the jacking frame section is used as a jacking back to replace a traditional jacking back pile, and the pile does not need to be dismantled after jacking construction is finished, so that waste engineering is avoided, the number of temporary engineering is greatly reduced, and the engineering investment is reduced; meanwhile, the construction of the U-shaped channel of the approach and the prefabricated jacking frame is changed from flow construction to parallel construction, and parallel operation can be performed among the working procedures, so that the construction period is shortened, the engineering cost is reduced, and good economic and social benefits are achieved. Through set up the post-cast strip between approach U type groove, bury the waterstop underground after the frame top is advanced and is accomplished, accomplish post-cast strip and subsiding crack construction, can guarantee the settlement joint stagnant water effect between approach U type groove, improve engineering construction quality.
Drawings
FIG. 1 is a schematic illustration of the jacking principle of the present invention in a specific embodiment;
in the figure, 1, a jacking frame, 2, a frame bridge working bottom plate, 3, a guide way U-shaped groove, 31, a guide way U-shaped groove bottom plate, 4, a reinforced concrete back, 5, a concrete working bottom plate of the guide way U-shaped groove, 6, a post-pouring belt, 7, an anchor beam, 8, a steel backing plate/concrete block, 9 and a jack.
Detailed Description
The invention will now be further illustrated by way of non-limiting examples in conjunction with the accompanying drawings:
as shown in the attached drawing, the frame bridge jacking construction method is characterized in that a guide way U-shaped groove adjacent to a jacking frame section is used for replacing the back of a traditional drilled pile to carry out jacking construction. The method is characterized in that: the construction of the U-shaped channel and the prefabricated jacking frame adopts a parallel construction process, the U-shaped channel 3 adjacent to the jacking frame 1 is used as the back of jacking construction, the number of sections of the U-shaped channel 3 required to be guided is obtained through theoretical calculation, and rubbles or earthwork are filled in the U-shaped channel 3 to be used as a balance weight, so that the aim of providing jacking counter force is fulfilled. In order to prevent the U-shaped channel 3 from sliding and deviating due to counter force in the jacking process, a reinforced concrete back 4 is arranged at the front end of the U-shaped channel 3 at the front end, the reinforced concrete back 4 is integrated with the frame bridge working bottom plate 2 and the concrete working bottom plate 5 of the U-shaped channel when being poured, and the reinforced concrete back 4 is anchored under a cushion layer at the lower part. During jacking, a steel backing plate or a concrete block 8 can be arranged between the U-shaped channel at the front end and the back of the reinforced concrete. A post-pouring belt 6 with the width of 1m is arranged between the two sections of the guide way U-shaped grooves 3 at the rear part, the water stopping effect of the settlement joint is met, the water stopping belt is buried after the frame is jacked in, and the post-pouring belt and the settlement joint construction are completed.
In order to ensure the reliable fixation of the working bottom plate, an anchor beam 7 is arranged at the lower part of the concrete working bottom plate 5 of the U-shaped groove of the approach.
In order to ensure the size of the post-pouring strip 6, a jack 9 is arranged between the two U-shaped grooves 3 of the approach channel of the post-pouring strip 6. The jack 9 can play the role of keeping the size of the post-cast strip 6, and the jack can be used for adjustment after the jacking project is finished if the size changes.
In this embodiment, other parts of the frame bridge jacking construction and the approach construction are the prior art.
Other parts in this embodiment are the prior art, and are not described herein again.
Claims (4)
1. A frame bridge jacking construction method is characterized by comprising the following steps: the construction of the U-shaped channel of the approach channel and the prefabricated jacking frame adopts a parallel construction process, the U-shaped channel of the approach channel adjacent to the jacking frame is used as the back of the jacking construction, a reinforced concrete back is arranged at the front end of the U-shaped channel of the approach channel, the reinforced concrete back, a frame bridge working bottom plate and a concrete working bottom plate of the U-shaped channel of the approach channel are integrally formed when being poured, and the reinforced concrete back is anchored into the lower part of the cushion layer; the number of the sections of the required U-shaped groove of the approach is obtained through theoretical calculation, and the aim of providing jacking counter force is achieved by adding a balance weight in the U-shaped groove of the approach; and arranging a post-pouring belt with the width of 1m between the two sections of U-shaped grooves of the rear approach, burying a water stop belt after the frame is jacked in, and finishing post-pouring belt and settlement joint construction.
2. The frame bridge jacking construction method as claimed in claim 1, wherein: and a jack is arranged between the two U-shaped grooves of the approach channel in the post-pouring belt.
3. The frame bridge jacking construction method as claimed in claim 1 or 2, wherein: and rubbles or earthwork are filled in the U-shaped groove of the approach way to serve as a balance weight.
4. The frame bridge jacking construction method as claimed in claim 3, wherein: and an anchor beam is arranged at the lower part of the concrete working bottom plate of the U-shaped groove of the approach way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111233070.8A CN113897872A (en) | 2021-10-22 | 2021-10-22 | Frame bridge jacking construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111233070.8A CN113897872A (en) | 2021-10-22 | 2021-10-22 | Frame bridge jacking construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113897872A true CN113897872A (en) | 2022-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111233070.8A Pending CN113897872A (en) | 2021-10-22 | 2021-10-22 | Frame bridge jacking construction method |
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| CN (1) | CN113897872A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2979927A1 (en) * | 2011-09-13 | 2013-03-15 | Mustapha Aboulcaid | PROCESS FOR THE CONSTRUCTION OF WORKS, IN PARTICULAR PASSAGES UNDER RAILWAYS OR SIMILAR OPERATIONS |
| CN103225512A (en) * | 2013-04-27 | 2013-07-31 | 沈阳市政集团有限公司 | Construction method for making prestressed back for box-culvert jacking |
| CN203429557U (en) * | 2013-04-25 | 2014-02-12 | 姜勇 | Anchor pole back beam applied to underpass bridge jacking construction |
| CN104612056A (en) * | 2014-12-10 | 2015-05-13 | 中铁第四勘察设计院集团有限公司 | Quick pushing and transverse moving method for integral frame bridge |
| CN105714686A (en) * | 2016-03-02 | 2016-06-29 | 沈阳铁道勘察设计院有限公司 | Double-L type pipe-roofing structure control box bridge jacking method |
| CN208105320U (en) * | 2018-04-23 | 2018-11-16 | 宜昌合中建设工程有限公司 | A kind of box culvert jacking construction support device |
-
2021
- 2021-10-22 CN CN202111233070.8A patent/CN113897872A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2979927A1 (en) * | 2011-09-13 | 2013-03-15 | Mustapha Aboulcaid | PROCESS FOR THE CONSTRUCTION OF WORKS, IN PARTICULAR PASSAGES UNDER RAILWAYS OR SIMILAR OPERATIONS |
| CN203429557U (en) * | 2013-04-25 | 2014-02-12 | 姜勇 | Anchor pole back beam applied to underpass bridge jacking construction |
| CN103225512A (en) * | 2013-04-27 | 2013-07-31 | 沈阳市政集团有限公司 | Construction method for making prestressed back for box-culvert jacking |
| CN104612056A (en) * | 2014-12-10 | 2015-05-13 | 中铁第四勘察设计院集团有限公司 | Quick pushing and transverse moving method for integral frame bridge |
| CN105714686A (en) * | 2016-03-02 | 2016-06-29 | 沈阳铁道勘察设计院有限公司 | Double-L type pipe-roofing structure control box bridge jacking method |
| CN208105320U (en) * | 2018-04-23 | 2018-11-16 | 宜昌合中建设工程有限公司 | A kind of box culvert jacking construction support device |
Non-Patent Citations (1)
| Title |
|---|
| 张贵婷等: ""大断面管棚-箱涵超薄覆土斜穿越技术综述"", 《中国土木工程学会第十二届年会暨隧道及地下工程分会第十四届年会论文集》 * |
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Application publication date: 20220107 |
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