CN113430885A - Grouting construction method for bridge head butt strap for reconstruction and extension of expressway - Google Patents
Grouting construction method for bridge head butt strap for reconstruction and extension of expressway Download PDFInfo
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- CN113430885A CN113430885A CN202110725684.1A CN202110725684A CN113430885A CN 113430885 A CN113430885 A CN 113430885A CN 202110725684 A CN202110725684 A CN 202110725684A CN 113430885 A CN113430885 A CN 113430885A
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- grouting
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/10—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for raising or levelling sunken paving; for filling voids under paving; for introducing material into substructure
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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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- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a grouting construction method for a bridge head butt strap for reconstruction and extension of a highway, which comprises the following steps of: placing butt straps in parallel at the roadbed of the road surface to be expanded; grouting holes are arranged on the butt strap and the roadbed; inserting a grouting pipe into the grouting hole, and sealing the hole; and (4) injecting slurry into the grouting hole, stopping grouting and sealing the grouting opening after the injection is finished, and removing the grouting pipe above the butt strap surface after the slurry is solidified. The invention has the beneficial effects that: the construction method for the bridge end butt strap grouting for the reconstruction and expansion of the expressway effectively solves the problem that the road surface subsidence disease is caused by large difference settlement generated by large difference of consolidation degree difference of the new and old road beds spliced at the bridge butt strap under the tense construction period of the reconstruction and expansion of the expressway, is convenient, safe and reliable to construct, simple in material, easy to manufacture and low in cost, and can be used as an effective reference for similar or similar construction.
Description
Technical Field
The invention relates to the technical field of bridge expansion, in particular to a grouting construction method for a bridge head butt strap for expressway reconstruction and expansion.
Background
In recent years, the construction scale of the national traffic infrastructure is gradually enlarged, and the reconstruction and the expansion of the expressway are rapidly developed. The original bidirectional four-lane highway is transformed into the bidirectional eight-lane highway by splicing the width at two sides. Because the mechanical property of the roadbed roadbeds at the two sides of the old roadbed and the roadbed consolidation degree of the old roadbed have larger difference, in order to avoid the larger difference settlement of the old roadbed and the influence of the spliced roadbed load on the old roadbed as much as possible, the wide spliced bridge, the expanded hole bridge and the newly-built bridge head butt strap are subjected to grouting treatment, so that the roadbed under the butt strap in the range of the reinforced platform back is close to the bearing capacity of the old roadbed, the jumping caused by settlement of the butt strap during operation is prevented, and the road-involved construction safety risk and the high cost caused by repair are avoided.
Disclosure of Invention
The main purpose of the application is to provide a grouting construction method for the bridge head butt strap for the reconstruction and extension of the expressway, which can solve the problem of road surface subsidence caused by the fact that the difference of the consolidation degrees of the roadbed is large when the splicing of a new roadbed and an old roadbed at the bridge butt strap is performed on the expressway in a short construction period.
In order to achieve the purpose, the invention adopts the following technical scheme:
a grouting construction method for a bridge head butt strap for highway reconstruction and extension comprises the following steps:
(1) placing butt straps in parallel at the roadbed of the road surface to be expanded;
(2) grouting holes are arranged on the butt strap and the roadbed;
(3) inserting a grouting pipe into the grouting hole, and sealing the hole;
(4) and (4) injecting slurry into the grouting hole, stopping grouting and sealing the grouting opening after the injection is finished, and removing the grouting pipe above the butt strap surface after the slurry is solidified.
The grouting construction method for the bridge head butt strap for highway reconstruction and expansion is an optimal implementation scheme, and the butt strap is a spliced wide butt strap or a platform back for removing a newly-built butt strap.
The grouting construction method for the bridge end butt strap for highway reconstruction and expansion is a preferred embodiment, and the grouting holes are arranged as follows: arranging a row of edge grouting holes along the long edges of the butt strap, wherein the distance between each edge grouting hole and the long edge of the butt strap is 1m, and the edge grouting holes are arranged along the two long edges of the butt strap; arranging a row of middle grouting holes between two rows of edge grouting holes every two meters;
the method comprises the following steps that a splicing line of a butt strap and a roadbed is taken as a symmetry axis, a row of roadbed grouting holes are arranged on the roadbed, the roadbed grouting holes and edge grouting holes are symmetrical about the symmetry axis, and the distance between the roadbed grouting holes and the adjacent roadbed edge is 1 m;
the number of the grouting holes in each row of edge grouting holes, the number of the grouting holes in each row of middle grouting holes and the number of the grouting holes in each row of roadbed grouting holes are the same and the grouting holes are symmetrically arranged.
The number of the grouting holes in each row of the edge grouting holes, the middle grouting holes in each row and the roadbed grouting holes in each row is 3, so that 3 rows of grouting holes are formed.
Preferably, when the road surface to be expanded is a wide splicing butt strap road surface, the distance between two adjacent rows of grouting holes is 1.5m, and the center of the middle row of grouting holes is positioned on the splicing line of the old butt strap and the wide splicing butt strap.
Preferably, when the newly-built slab pavement is removed for the platform back to expand the pavement, the distance between two adjacent rows of grouting holes is 5-6m, a row of reinforcing grouting holes is arranged between the two adjacent rows of grouting holes, the number of the grouting holes in each row is 2, the 2 reinforcing grouting holes are symmetrically arranged relative to the central axis of the slab, and the distance between the reinforcing grouting holes and the length edge of the adjacent slab is 2 m.
The grouting construction method for the bridge head butt strap for highway reconstruction and expansion is a preferred embodiment, the depth of the grouting hole is 2.4m, the aperture of the grouting hole is 70mm, the diameter of the grouting pipe is 50mm,
when the grouting pipe is inserted into the grouting hole, the distance between the bottom of the grouting pipe and the bottom of the grouting hole is 10cm, and the distance between a grouting opening in the top of the grouting pipe and the surface of the butt strap is 15 cm.
As an optimal implementation scheme, the hole sealing treatment is as follows: and sealing the gap between the grouting hole and the grouting pipe by adopting the slurry at a position 1m away from the top end of the grouting hole.
The grouting construction method for the bridge head butt strap for highway reconstruction and expansion is a preferred embodiment, slurry is injected into the grouting hole in a descending grouting mode, the grouting pressure is 0.2MPa, the final grouting pressure is 0.5MPa, and grouting is stopped after the pressure is stabilized for 10min and the grouting opening is closed.
The grouting opening can be closed by directly plugging a wooden plug into the grouting opening.
As a preferred embodiment, the slurry is a mixture of water and cement, and the mass ratio of water to cement is 0.55: 1.
the invention has the beneficial effects that: the construction method for the bridge end butt strap grouting for the reconstruction and expansion of the expressway effectively solves the problem that the road surface subsidence disease is caused by large difference settlement generated by large difference of consolidation degree difference of the new and old road beds spliced at the bridge butt strap under the tense construction period of the reconstruction and expansion of the expressway, is convenient, safe and reliable to construct, simple in material, easy to manufacture and low in cost, and can be used as an effective reference for similar or similar construction.
Drawings
Fig. 1 is a structural diagram illustrating arrangement of grouting holes in a grouting construction method for reconstructing and extending a bridge head butt strap of a highway in embodiment 1 of the present invention;
FIG. 2 is a structural diagram of arrangement of grouting holes in the grouting construction method for reconstruction and extension of a bridge head butt strap of an expressway according to embodiment 2 of the present invention
In the figure: 1. a roadbed; 2. old butt straps; 3. splicing a wide butt strap; 4. grouting holes; 5. splicing lines of the old butt strap and the wide butt strap; 6. and (5) building a new patch.
Detailed Description
In order to make the technical solutions in the embodiments of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to examples, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example 1
A grouting construction method for a bridge head butt strap for highway reconstruction and extension comprises the following steps:
(1) placing butt straps in parallel at a roadbed 1 of a road surface to be expanded; the butt strap adopts a split width butt strap 3;
(2) grouting holes 4 are arranged on the butt strap and the roadbed 1; arranging a row of edge grouting holes 4 along the long edges of the butt strap, wherein the distance between the edge grouting holes 4 and the long edges of the butt strap is 1m, and the edge grouting holes 4 are arranged along the two long edges of the butt strap; arranging a row of middle grouting holes 4 between two rows of edge grouting holes 4 every two meters; the splicing line of the butt strap and the roadbed 1 is taken as a symmetry axis, a row of roadbed grouting holes 4 are arranged on the roadbed 1, the roadbed grouting holes 4 and the edge grouting holes 4 are symmetrical about the symmetry axis, and the distance between the roadbed grouting holes 4 and the edge of the roadbed 1 adjacent to the roadbed grouting holes 4 is 1 m; 3 grouting holes 4 are formed in each row of edge grouting holes 4, each row of middle grouting holes 4 and each row of roadbed grouting holes 4, and the number of the grouting holes 4 is 3, and the grouting holes are symmetrically arranged to form 3 rows of grouting holes 4; the distance between two adjacent rows of grouting holes 4 is 1.5m, and the center of the middle row of grouting holes 4 is positioned on the splicing line 5 of the old butt strap 2 and the splicing butt strap 3; the design depth of the grouting holes 4 is 2.4m, and the design aperture of the grouting holes 4 is 70 mm;
(3) inserting a grouting pipe into the grouting hole 4, and performing hole sealing treatment; the diameter of the grouting pipe is 50mm, when the grouting pipe is inserted into the grouting hole 4, the distance between the bottom of the grouting pipe and the bottom of the grouting hole 4 is 10cm, and the distance between a grouting opening in the top of the grouting pipe and the surface of the butt strap is 15 cm; sealing the gap between the grouting hole 4 and the grouting pipe by adopting slurry at a position 1m away from the top end of the grouting hole 4, and sealing the grouting hole 4;
(4) injecting slurry into the grouting hole 4 by adopting a descending grouting mode, wherein the grouting pressure is 0.2MPa, the final grouting pressure is 0.5MPa, grouting is stopped after the pressure is stabilized for 10min, a grouting opening is sealed, a grouting pipe above a butt strap surface is removed after the slurry is solidified, preferably, the slurry is a mixture of water and cement, and the mass ratio of the water to the cement is 0.55: 1.
example 2
A grouting construction method for a bridge head butt strap for highway reconstruction and extension comprises the following steps:
(1) placing butt straps in parallel at a roadbed 1 of a road surface to be expanded; the new building butt strap 6 is removed by adopting a platform back;
(2) grouting holes 4 are arranged on the butt strap and the roadbed 1; arranging a row of edge grouting holes 4 along the long edges of the butt strap, wherein the distance between the edge grouting holes 4 and the long edges of the butt strap is 1m, and the edge grouting holes 4 are arranged along the two long edges of the butt strap; arranging a row of middle grouting holes 4 between two rows of edge grouting holes 4 every two meters; the splicing line of the butt strap and the roadbed 1 is taken as a symmetry axis, a row of roadbed grouting holes 4 are arranged on the roadbed 1, the roadbed grouting holes 4 and the edge grouting holes 4 are symmetrical about the symmetry axis, and the distance between the roadbed grouting holes 4 and the edge of the roadbed 1 adjacent to the roadbed grouting holes 4 is 1 m; 3 grouting holes 4 are formed in each row of edge grouting holes 4, each row of middle grouting holes 4 and each row of roadbed grouting holes 4, and the number of the grouting holes 4 is 3, and the grouting holes are symmetrically arranged to form 3 rows of grouting holes 4; the distance between two adjacent rows of grouting holes 4 is 5-6 m; a row of reinforcing grouting holes 4 are arranged between two adjacent rows of grouting holes 4, the number of the grouting holes 4 contained in each row of reinforcing grouting holes 4 is 2, the 2 reinforcing grouting holes 4 are symmetrically arranged relative to the central axis of the butt strap, and the distance between each reinforcing grouting hole 4 and the length edge of the butt strap adjacent to the reinforcing grouting hole 4 is 2 m;
the design depth of the grouting holes 4 is 2.4m, and the design aperture of the grouting holes 4 is 70 mm;
(3) inserting a grouting pipe into the grouting hole 4, and performing hole sealing treatment; the diameter of the grouting pipe is 50mm, when the grouting pipe is inserted into the grouting hole 4, the distance between the bottom of the grouting pipe and the bottom of the grouting hole 4 is 10cm, and the distance between a grouting opening in the top of the grouting pipe and the surface of the butt strap is 15 cm; sealing the gap between the grouting hole 4 and the grouting pipe by adopting slurry at a position 1m away from the top end of the grouting hole 4, and sealing the grouting hole 4;
(4) injecting slurry into the grouting hole 4 by adopting a descending grouting mode, wherein the grouting pressure is 0.2MPa, the final grouting pressure is 0.5MPa, grouting is stopped after the pressure is stabilized for 10min, a grouting opening is sealed, a grouting pipe above a butt strap surface is removed after the slurry is solidified, preferably, the slurry is a mixture of water and cement, and the mass ratio of the water to the cement is 0.55: 1.
the above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and additions can be made without departing from the method of the present invention, and these modifications and additions should also be regarded as the protection scope of the present invention.
Claims (9)
1. A grouting construction method for a bridge head butt strap for reconstruction and extension of a highway is characterized by comprising the following steps:
(1) placing butt straps in parallel at the roadbed of the road surface to be expanded;
(2) grouting holes are arranged on the butt strap and the roadbed;
(3) inserting a grouting pipe into the grouting hole, and sealing the hole;
(4) and (4) injecting slurry into the grouting hole, stopping grouting and sealing the grouting opening after the injection is finished, and removing the grouting pipe above the butt strap surface after the slurry is solidified.
2. The grouting construction method for the bridge head butt strap of the highway reconstruction and expansion according to claim 1, wherein the butt strap is a split butt strap or a platform back for removing a newly-built butt strap.
3. The grouting construction method for the bridge head butt strap for reconstruction and expansion of the expressway as claimed in claim 2, wherein the grouting holes are arranged as follows: arranging a row of edge grouting holes along the long edges of the butt strap, wherein the distance between each edge grouting hole and the long edge of the butt strap is 1m, and the edge grouting holes are arranged along the two long edges of the butt strap; arranging a row of middle grouting holes between two rows of edge grouting holes every two meters;
the method comprises the following steps that a splicing line of a butt strap and a roadbed is taken as a symmetry axis, a row of roadbed grouting holes are arranged on the roadbed, the roadbed grouting holes and edge grouting holes are symmetrical about the symmetry axis, and the distance between the roadbed grouting holes and the adjacent roadbed edge is 1 m;
the number of the grouting holes contained in each row of edge grouting holes, each row of middle grouting holes and each row of roadbed grouting holes is the same and the grouting holes are symmetrically arranged;
the number of the grouting holes in each row of the edge grouting holes, the middle grouting holes in each row and the roadbed grouting holes in each row is 3, so that 3 rows of grouting holes are formed.
4. The grouting construction method for the bridge end butt strap for the reconstruction and expansion of the expressway of claim 3, wherein when the pavement to be expanded is a widened pavement, the distance between two adjacent rows of grouting holes is 1.5m, and the center of the middle row of grouting holes is positioned on the splicing line of the old butt strap and the widened butt strap.
5. The method for constructing the bridge head butt strap for the reconstruction and the extension of the expressway of claim 3, wherein when the newly-built butt strap is removed for the abutment of the road surface to be extended, the distance between two adjacent rows of grouting holes is 5-6m, a row of reinforcing grouting holes is arranged between two adjacent rows of grouting holes, the number of the grouting holes in each row of reinforcing grouting holes is 2, the 2 reinforcing grouting holes are symmetrically arranged relative to the central axis of the butt strap, and the distance between each reinforcing grouting hole and the length edge of the butt strap adjacent to the reinforcing grouting hole is 2 m.
6. The grouting construction method of a bridge head butt strap for highway reconstruction and expansion according to claim 3, wherein the depth of the grouting hole is 2.4m, the diameter of the grouting hole is 70mm, the diameter of the grouting pipe is 50mm,
when the grouting pipe is inserted into the grouting hole, the distance between the bottom of the grouting pipe and the bottom of the grouting hole is 10cm, and the distance between a grouting opening in the top of the grouting pipe and the surface of the butt strap is 15 cm.
7. The grouting construction method for the bridge head butt strap for reconstruction and extension of the expressway according to claim 6, wherein the hole sealing treatment is as follows: and sealing the gap between the grouting hole and the grouting pipe by adopting the slurry at a position 1m away from the top end of the grouting hole.
8. The grouting construction method for the bridge head butt strap for the reconstruction and expansion of the expressway as claimed in claim 7, wherein a downward grouting mode is adopted to inject slurry into the grouting hole, the grouting pressure is 0.2MPa, the final grouting pressure is 0.5MPa, and after the pressure is stabilized for 10min, grouting is stopped and a grouting opening is closed.
9. The grouting construction method for the bridge head butt strap for the reconstruction and expansion of the expressway as claimed in claim 8, wherein the slurry is a mixture of water and cement, and the mass ratio of the water to the cement is 0.55: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110725684.1A CN113430885B (en) | 2021-06-29 | 2021-06-29 | Grouting construction method for bridge head butt strap for reconstruction and extension of expressway |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110725684.1A CN113430885B (en) | 2021-06-29 | 2021-06-29 | Grouting construction method for bridge head butt strap for reconstruction and extension of expressway |
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| CN113430885A true CN113430885A (en) | 2021-09-24 |
| CN113430885B CN113430885B (en) | 2023-01-20 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204401447U (en) * | 2015-01-27 | 2015-06-17 | 重庆交通大学 | A kind of structure preventing bumping at bridge-head |
| US9434881B1 (en) * | 2015-08-25 | 2016-09-06 | Soilworks, LLC | Synthetic fluids as compaction aids |
| CN107142929A (en) * | 2017-05-25 | 2017-09-08 | 中国电建集团华东勘测设计研究院有限公司 | Sea is non-to squeeze into type large diameter single pile foundation structure and its construction method |
| CN206971095U (en) * | 2017-07-13 | 2018-02-06 | 天津市路建源建设市政工程有限公司 | A kind of bridge floor widens the backfill structure of processing |
| CN109704656A (en) * | 2019-01-08 | 2019-05-03 | 上海力阳道路加固科技股份有限公司 | A kind of bridge joint hillside fields polymer grouting strengthening method |
| CN210826964U (en) * | 2019-08-16 | 2020-06-23 | 浙江交工集团股份有限公司 | Dyke top highway embankment piece together wide structure |
| CN111648233A (en) * | 2020-05-26 | 2020-09-11 | 中冶南方城市建设工程技术有限公司 | Join together wide bridge joint and prevent subsiding board device |
-
2021
- 2021-06-29 CN CN202110725684.1A patent/CN113430885B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204401447U (en) * | 2015-01-27 | 2015-06-17 | 重庆交通大学 | A kind of structure preventing bumping at bridge-head |
| US9434881B1 (en) * | 2015-08-25 | 2016-09-06 | Soilworks, LLC | Synthetic fluids as compaction aids |
| CN107142929A (en) * | 2017-05-25 | 2017-09-08 | 中国电建集团华东勘测设计研究院有限公司 | Sea is non-to squeeze into type large diameter single pile foundation structure and its construction method |
| CN206971095U (en) * | 2017-07-13 | 2018-02-06 | 天津市路建源建设市政工程有限公司 | A kind of bridge floor widens the backfill structure of processing |
| CN109704656A (en) * | 2019-01-08 | 2019-05-03 | 上海力阳道路加固科技股份有限公司 | A kind of bridge joint hillside fields polymer grouting strengthening method |
| CN210826964U (en) * | 2019-08-16 | 2020-06-23 | 浙江交工集团股份有限公司 | Dyke top highway embankment piece together wide structure |
| CN111648233A (en) * | 2020-05-26 | 2020-09-11 | 中冶南方城市建设工程技术有限公司 | Join together wide bridge joint and prevent subsiding board device |
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