CN117107660A - Bridge approach construction method - Google Patents
Bridge approach construction method Download PDFInfo
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- CN117107660A CN117107660A CN202311258577.8A CN202311258577A CN117107660A CN 117107660 A CN117107660 A CN 117107660A CN 202311258577 A CN202311258577 A CN 202311258577A CN 117107660 A CN117107660 A CN 117107660A
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- vibrator
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- 238000010276 construction Methods 0.000 title claims abstract description 52
- 238000013459 approach Methods 0.000 title claims abstract description 26
- 238000011065 in-situ storage Methods 0.000 claims abstract description 24
- 239000010410 layer Substances 0.000 claims abstract description 12
- 238000005266 casting Methods 0.000 claims abstract description 4
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 239000002344 surface layer Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 31
- 230000002787 reinforcement Effects 0.000 claims description 26
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 9
- 238000004080 punching Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 238000005056 compaction Methods 0.000 abstract 1
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D18/00—Bridges specially adapted for particular applications or functions not provided for elsewhere, e.g. aqueducts, bridges for supporting pipe-lines
-
- 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
- E01D2101/26—Concrete reinforced
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The application discloses a bridge approach construction method, which comprises the following steps: s1: preparing construction; s2: an island building platform; constructing a prefabricated field, and then prefabricating a hollow slab; s3: constructing a filling pile; cast-in-situ abutment; s4: cast-in-situ bridge approach beam; s5: and (3) mounting a hollow slab: installing the prefabricated hollow slab in the step S2 on the cast-in-situ bridge approach beam of the step S4; s6: cast-in-situ hinge joint; s7: casting the surface layer in situ; s8: a cast-in-situ guardrail foundation; s9: installing a guardrail; s10: installing bridge deck auxiliary facilities; s11: and (5) cleaning and checking. The application adopts layered mold-entering layered vibration to perform concrete pouring, an inserted vibrator is adopted to perform vibration, the vibration sequence starts from the position close to the mold plate, the distance from the vibrator to the mold plate is no more than 150mm from the outside to the inside, the collision of the vibrator to the mold plate or embedded parts is avoided as much as possible, the vibrator is vertically inserted into concrete during vibration, and is quickly inserted and slowly pulled out to be pumped up and down, so that uniform compaction is facilitated, and the upper layer and the lower layer are ensured to be combined into a whole.
Description
Technical Field
The application relates to the technical field of bridge approach construction, in particular to a bridge approach construction method.
Background
Approach bridge: bridge-type buildings connecting wharfs and land areas. When building the bridge on water, in order to make the large ship pass smoothly under the bridge, enough clearance height must be left under the bridge hole, so that the bridge must be made higher. The bridge is raised and the gradient between the bridge and the two banks increases, which seriously affects the traffic on the upper and lower decks. The approach is the transition between the bridge and the road, and gradually lifts or reduces the road surface, so that the vehicle can smoothly go up and down the bridge deck.
When the existing continuous structure concrete beam is constructed, conventionally, bridge approach is firstly carried out on two side edges, then main bridge cantilever construction is carried out from the bridge approach on two sides of the construction to the main bridge in a bridge manner one by one section, and the main bridge section construction can be carried out only when the bridge approach is required to be completely constructed by the bridge approach method, however, in the actual construction process of the existing middle-supported tie bar arch bridge, the bridge approach construction often leads to the delay of construction period or the incapability of completing the construction in time due to uncontrollable outside reasons.
Disclosure of Invention
The application aims to provide a bridge approach construction method for solving the problems in the prior art.
In order to achieve the above purpose, the present application provides the following technical solutions: a bridge approach construction method comprises the following steps:
s1: preparing construction;
s2: an island building platform; constructing a prefabricated field, and then prefabricating a hollow slab;
s3: constructing a filling pile; cast-in-situ abutment;
s4: cast-in-situ bridge approach beam;
s5: and (3) mounting a hollow slab: installing the prefabricated hollow slab in the step S2 on the cast-in-situ bridge approach beam of the step S4;
s6: cast-in-situ hinge joint;
s7: casting the surface layer in situ;
s8: a cast-in-situ guardrail foundation;
s9: installing a guardrail;
s10: installing bridge deck auxiliary facilities;
s11: and (5) cleaning and checking.
Preferably, the S1 construction preparation includes:
according to the drawing and the written measurement data and the measurement marks provided by the supervision engineer, checking basic data of relevant plane control points and elevation control points in the provided measurement range, and timely reporting the checking result to the supervision engineer in a written form;
according to the final formal control points provided by the design or the owners, the construction base line and the leveling points are guided and measured according to the primary lead wire, the fourth leveling standard and the like so as to control the plane position and the elevation of each part in the construction process; setting up a construction plane control system by adopting a total station to perform construction baseline, and setting up a stone pier at a construction baseline point; the construction base line and the level point can be put into use after being approved by a supervision engineer; the protection of the control points is enhanced in construction so as to ensure that the control points are not destroyed and regularly checked;
and 2 settlement displacement observation points are arranged at the top of each beam and are respectively arranged at two ends of the beams, and settlement displacement observation is carried out by adopting a level gauge and a theodolite.
Preferably, the construction of the S3 bored pile includes:
punching: when the hole is formed, a circular steel plate with the diameter of 6-8mm is firstly arranged at the hole opening for protecting the profile, the inner diameter of the protecting profile is 200mm larger than the diameter of the impact hammer, the depth is generally 1.2-1.5 m, and the depth is 0.3m higher than the ground so as to facilitate the mud circulation; in the punching process, adopting slurry to protect the wall and forward circulating floating slag; firstly adopting small-stroke drilling, and punching holes in a normal stroke after a drill bit enters a medium-stroke rock stratum;
manufacturing and installing a reinforcement cage: the manufacturing of the reinforcement cage adopts an inner hoop forming method, the inner reinforcing ribs are required to be welded firmly with the main ribs, and the main ribs cannot extend out from the lowest reinforcing ribs; lifting a reinforcement cage, namely adopting two-point cranes, adopting phi 25 reinforcement bars as a framework on the inner side of the reinforcement cage, simultaneously lifting the two points by using a steel wire rope at the lifting points, slowly lifting one side of the lifting points to be vertically positioned after the two ends are simultaneously lifted off, removing the bottom lifting points, and slowly placing the cage into the hole; in the lowering process, the constraint between the fir wood and the cages is removed one by one from bottom to top, the first section of cage is fixed by adopting a cross method through a supporting bar after being in place, then the second section of cage is lifted firstly, and the connecting method adopts a method of combining welding and lap joint, but the steel reinforcement cage must meet the requirement of verticality;
and (3) concrete pouring: the method is characterized in that concrete pouring is carried out by adopting layered mold entering and layered vibrating, an inserted vibrator is adopted to vibrate, the vibrating sequence starts from a position close to a mold plate, the distance from the vibrator to the mold plate is not more than 150mm from outside to inside, the mold plate or an embedded part is prevented from being collided as much as possible, the vibrator is vertically inserted into concrete during vibrating, and is quickly inserted and slowly pulled out, and the vibrator is pulled up and down, so that uniform vibrating is realized, and the upper layer and the lower layer are combined into a whole.
Compared with the prior art, the application has the beneficial effects that:
1. setting 2 settlement displacement observation points at the top of each beam, respectively arranging the settlement displacement observation points at two ends of the beams, and observing settlement displacement by adopting a level gauge and a theodolite; ensuring that the sedimentation displacement of each cross beam is observed;
2. the manufacturing of the reinforcement cage adopts an inner hoop forming method, the inner reinforcing ribs are required to be welded firmly with the main ribs, and the main ribs cannot extend out from the lowest reinforcing ribs; lifting a reinforcement cage, namely adopting two-point cranes, adopting phi 25 reinforcement bars as a framework on the inner side of the reinforcement cage, simultaneously lifting the two points by using a steel wire rope at the lifting points, slowly lifting one side of the lifting points to be vertically positioned after the two ends are simultaneously lifted off, removing the bottom lifting points, and slowly placing the cage into the hole; the application can avoid clamping the guide pipe and ensure the smooth construction;
3. the method is characterized in that concrete pouring is carried out by adopting layered mold entering and layered vibrating, an inserted vibrator is adopted to vibrate, the vibrating sequence starts from a position close to a mold plate, the distance from the vibrator to the mold plate is not more than 150mm from outside to inside, the collision of the mold plate or an embedded part is avoided as much as possible, the vibrator is vertically inserted into concrete during vibrating, quick insertion and slow pulling are carried out, and the vibrator is pumped up and down, so that uniform vibration is realized, the upper layer and the lower layer are combined into a whole, and smooth construction is ensured.
Drawings
The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate the application and together with the embodiments of the application, serve to explain the application. In the drawings:
fig. 1 is a flow chart of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, based on the embodiments of the application, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the application. Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application.
Referring to fig. 1, in an embodiment of the present application, a bridge approach construction method includes the following steps:
s1: preparing construction;
s2: an island building platform; constructing a prefabricated field, and then prefabricating a hollow slab;
s3: constructing a filling pile; cast-in-situ abutment;
s4: cast-in-situ bridge approach beam;
s5: and (3) mounting a hollow slab: installing the prefabricated hollow slab in the step S2 on the cast-in-situ bridge approach beam of the step S4;
s6: cast-in-situ hinge joint;
s7: casting the surface layer in situ;
s8: a cast-in-situ guardrail foundation;
s9: installing a guardrail;
s10: installing bridge deck auxiliary facilities;
s11: and (5) cleaning and checking.
Preferably, the S1 construction preparation includes:
according to the drawing and the written measurement data and the measurement marks provided by the supervision engineer, checking basic data of relevant plane control points and elevation control points in the provided measurement range, and timely reporting the checking result to the supervision engineer in a written form;
according to the final formal control points provided by the design or the owners, the construction base line and the leveling points are guided and measured according to the primary lead wire, the fourth leveling standard and the like so as to control the plane position and the elevation of each part in the construction process; setting up a construction plane control system by adopting a total station to perform construction baseline, and setting up a stone pier at a construction baseline point; the construction base line and the level point can be put into use after being approved by a supervision engineer; the protection of the control points is enhanced in construction so as to ensure that the control points are not destroyed and regularly checked;
and 2 settlement displacement observation points are arranged at the top of each beam and are respectively arranged at two ends of the beams, and settlement displacement observation is carried out by adopting a level gauge and a theodolite.
Preferably, the construction of the S3 bored pile includes:
punching: when the hole is formed, a circular steel plate with the diameter of 6-8mm is firstly arranged at the hole opening for protecting the profile, the inner diameter of the protecting profile is 200mm larger than the diameter of the impact hammer, the depth is generally 1.2-1.5 m, and the depth is 0.3m higher than the ground so as to facilitate the mud circulation; in the punching process, adopting slurry to protect the wall and forward circulating floating slag; firstly adopting small-stroke drilling, and punching holes in a normal stroke after a drill bit enters a medium-stroke rock stratum;
manufacturing and installing a reinforcement cage: the manufacturing of the reinforcement cage adopts an inner hoop forming method, the inner reinforcing ribs are required to be welded firmly with the main ribs, and the main ribs cannot extend out from the lowest reinforcing ribs; lifting a reinforcement cage, namely adopting two-point cranes, adopting phi 25 reinforcement bars as a framework on the inner side of the reinforcement cage, simultaneously lifting the two points by using a steel wire rope at the lifting points, slowly lifting one side of the lifting points to be vertically positioned after the two ends are simultaneously lifted off, removing the bottom lifting points, and slowly placing the cage into the hole; in the lowering process, the constraint between the fir wood and the cages is removed one by one from bottom to top, the first section of cage is fixed by adopting a cross method through a supporting bar after being in place, then the second section of cage is lifted firstly, and the connecting method adopts a method of combining welding and lap joint, but the steel reinforcement cage must meet the requirement of verticality;
and (3) concrete pouring: the method is characterized in that concrete pouring is carried out by adopting layered mold entering and layered vibrating, an inserted vibrator is adopted to vibrate, the vibrating sequence starts from a position close to a mold plate, the distance from the vibrator to the mold plate is not more than 150mm from outside to inside, the mold plate or an embedded part is prevented from being collided as much as possible, the vibrator is vertically inserted into concrete during vibrating, and is quickly inserted and slowly pulled out, and the vibrator is pulled up and down, so that uniform vibrating is realized, and the upper layer and the lower layer are combined into a whole.
The working principle of the application is as follows: setting 2 settlement displacement observation points at the top of each beam, respectively arranging the settlement displacement observation points at two ends of the beams, and observing settlement displacement by adopting a level gauge and a theodolite; ensuring that the sedimentation displacement of each cross beam is observed; the manufacturing of the reinforcement cage adopts an inner hoop forming method, the inner reinforcing ribs are required to be welded firmly with the main ribs, and the main ribs cannot extend out from the lowest reinforcing ribs; lifting a reinforcement cage, namely adopting two-point cranes, adopting phi 25 reinforcement bars as a framework on the inner side of the reinforcement cage, simultaneously lifting the two points by using a steel wire rope at the lifting points, slowly lifting one side of the lifting points to be vertically positioned after the two ends are simultaneously lifted off, removing the bottom lifting points, and slowly placing the cage into the hole; the application can avoid clamping the guide pipe and ensure the smooth construction; the method is characterized in that concrete pouring is carried out by adopting layered mold entering and layered vibrating, an inserted vibrator is adopted to vibrate, the vibrating sequence starts from a position close to a mold plate, the distance from the vibrator to the mold plate is not more than 150mm from outside to inside, the mold plate or an embedded part is prevented from being collided as much as possible, the vibrator is vertically inserted into concrete during vibrating, and is quickly inserted and slowly pulled out, and the vibrator is pulled up and down, so that uniform vibrating is realized, and the upper layer and the lower layer are combined into a whole.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present application, and the present application is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present application has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (3)
1. A bridge approach construction method is characterized in that: the method comprises the following steps:
s1: preparing construction;
s2: an island building platform; constructing a prefabricated field, and then prefabricating a hollow slab;
s3: constructing a filling pile; cast-in-situ abutment;
s4: cast-in-situ bridge approach beam;
s5: and (3) mounting a hollow slab: installing the prefabricated hollow slab in the step S2 on the cast-in-situ bridge approach beam of the step S4;
s6: cast-in-situ hinge joint;
s7: casting the surface layer in situ;
s8: a cast-in-situ guardrail foundation;
s9: installing a guardrail;
s10: installing bridge deck auxiliary facilities;
s11: and (5) cleaning and checking.
2. The approach bridge construction method according to claim 1, wherein: the S1 construction preparation comprises the following steps:
according to the drawing and the written measurement data and the measurement marks provided by the supervision engineer, checking basic data of relevant plane control points and elevation control points in the provided measurement range, and timely reporting the checking result to the supervision engineer in a written form;
according to the final formal control points provided by the design or the owners, the construction base line and the leveling points are guided and measured according to the primary lead wire, the fourth leveling standard and the like so as to control the plane position and the elevation of each part in the construction process; setting up a construction plane control system by adopting a total station to perform construction baseline, and setting up a stone pier at a construction baseline point; the construction base line and the level point can be put into use after being approved by a supervision engineer; the protection of the control points is enhanced in construction so as to ensure that the control points are not destroyed and regularly checked;
and 2 settlement displacement observation points are arranged at the top of each beam and are respectively arranged at two ends of the beams, and settlement displacement observation is carried out by adopting a level gauge and a theodolite.
3. The approach bridge construction method according to claim 1, wherein: the S3 cast-in-place pile construction comprises:
punching: when the hole is formed, a circular steel plate with the diameter of 6-8mm is firstly arranged at the hole opening for protecting the profile, the inner diameter of the protecting profile is 200mm larger than the diameter of the impact hammer, the depth is generally 1.2-1.5 m, and the depth is 0.3m higher than the ground so as to facilitate the mud circulation; in the punching process, adopting slurry to protect the wall and forward circulating floating slag; firstly adopting small-stroke drilling, and punching holes in a normal stroke after a drill bit enters a medium-stroke rock stratum;
manufacturing and installing a reinforcement cage: the manufacturing of the reinforcement cage adopts an inner hoop forming method, the inner reinforcing ribs are required to be welded firmly with the main ribs, and the main ribs cannot extend out from the lowest reinforcing ribs; lifting a reinforcement cage, namely adopting two-point cranes, adopting phi 25 reinforcement bars as a framework on the inner side of the reinforcement cage, simultaneously lifting the two points by using a steel wire rope at the lifting points, slowly lifting one side of the lifting points to be vertically positioned after the two ends are simultaneously lifted off, removing the bottom lifting points, and slowly placing the cage into the hole; in the lowering process, the constraint between the fir wood and the cages is removed one by one from bottom to top, the first section of cage is fixed by adopting a cross method through a supporting bar after being in place, then the second section of cage is lifted firstly, and the connecting method adopts a method of combining welding and lap joint, but the steel reinforcement cage must meet the requirement of verticality;
and (3) concrete pouring: the method is characterized in that concrete pouring is carried out by adopting layered mold entering and layered vibrating, an inserted vibrator is adopted to vibrate, the vibrating sequence starts from a position close to a mold plate, the distance from the vibrator to the mold plate is not more than 150mm from outside to inside, the mold plate or an embedded part is prevented from being collided as much as possible, the vibrator is vertically inserted into concrete during vibrating, and is quickly inserted and slowly pulled out, and the vibrator is pulled up and down, so that uniform vibrating is realized, and the upper layer and the lower layer are combined into a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311258577.8A CN117107660A (en) | 2023-09-27 | 2023-09-27 | Bridge approach construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311258577.8A CN117107660A (en) | 2023-09-27 | 2023-09-27 | Bridge approach construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117107660A true CN117107660A (en) | 2023-11-24 |
Family
ID=88804035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311258577.8A Pending CN117107660A (en) | 2023-09-27 | 2023-09-27 | Bridge approach construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117107660A (en) |
-
2023
- 2023-09-27 CN CN202311258577.8A patent/CN117107660A/en active Pending
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