CN114427199A - Excavation-free mechanized construction method for mountain pedestrian footpath - Google Patents
Excavation-free mechanized construction method for mountain pedestrian footpath Download PDFInfo
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- CN114427199A CN114427199A CN202210186306.5A CN202210186306A CN114427199A CN 114427199 A CN114427199 A CN 114427199A CN 202210186306 A CN202210186306 A CN 202210186306A CN 114427199 A CN114427199 A CN 114427199A
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- 238000010276 construction Methods 0.000 title claims abstract description 38
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- 238000004873 anchoring Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims 1
- 238000011900 installation process Methods 0.000 abstract 1
- 230000032258 transport Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects 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
- 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
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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
-
- 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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for 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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- General Engineering & Computer Science (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
A mountain pedestrian path excavation-free mechanized construction method comprises the steps of installing a bridge deck walking path and a bridge deck track at an entrance of a construction section, and installing a bridge deck crane and a beam transporting trolley on the bridge deck of the walking section. Driving the bridge deck crane to the top of the pre-installed span steel pipe column, and anchoring the bridge deck crane; the remote control beam transporting trolley transports the component from an inlet to a bridge deck crane operation range through a bridge deck track, and the bridge deck crane lifts the component from the beam transporting trolley to install the steel pipe column; then sequentially mounting a midspan section steel beam, a column top section steel beam, a secondary member and a track; the bridge deck crane drives forwards to the top of the next span column, and the installation process is repeated.
Description
Technical Field
The invention relates to a mountainous pedestrian path excavation-free mechanical construction method.
Background
The mountain pavement project integrates leisure, fitness, tourism and entertainment, in recent years, some cities at home and abroad try to build the mountain pavement project, and most cities have great interest in the mountain pavement project. Because this kind of project is when the line selection, in order to guarantee the view effect, the mountain body that its line position is located generally is the abrupt slope that has certain slope, and the vegetation is flourishing along the line, because the particularity of project geographical environment can restrict the destruction to original mountain body in the work progress strictly, leads to conventional mechanical equipment all can't get into the mountain region operation, and material transportation and equipment transport are very difficult. Because the project form is novel, the construction experience is relatively less, the conventional methods of lifting and hoisting by pulling rods, cableway transportation and the like are generally adopted for installation and transportation of the established projects, and the defects of high lifting safety risk, low material transportation efficiency, high operation labor intensity, more uncertain factors along with the line passing, great influence on the ecological environment and the like exist. .
Disclosure of Invention
The invention solves the defects of the prior art and provides the excavation-free mechanized construction method of the pedestrian path of the mountainous region, which has the advantages of small influence on the ecological environment of the mountainous region, high construction mechanization degree, reduced labor intensity of mountain region construction operation, improved construction safety quality of the pavement bridge, saved ecological restoration cost and reduced overall construction cost.
In order to realize the aim, the invention firstly provides a mountain pedestrian path excavation-free mechanized construction method, which specifically comprises the following steps: the method comprises the steps of segmenting a planned mountain pedestrian path on mountain land according to preset conditions → constructing a pile foundation bearing platform 7 of each segment on the mountain land according to segments, sequentially installing a steel pipe column 6, a box body beam 3 and an overhanging T-shaped secondary beam 4 on the pile foundation bearing platform 7 of a starting segment, installing a bridge surface track 9 on the overhanging T-shaped secondary beam 4 of the starting segment, installing a bridge crane 1 and a beam transporting trolley 2 on the bridge surface track 9, moving the bridge crane 1 to the position of the pile foundation bearing platform 7 through the bridge surface track 9, positioning, transporting a member from the starting segment to the operation range of the bridge crane 1 through the bridge surface track 9 by using the remote beam transporting trolley 2, hanging the member from the beam transporting trolley 2 through the bridge surface track 1, installing the next pedestrian path and the bridge surface track 9 → repeating the steps until the construction of all mountain pedestrian paths is completed → dismantling the bridge surface track 9 and temporary facilities.
In this embodiment, the bridge deck track 9 is composed of two parallel arrangement's track, and adjacent bridge deck track 9 length direction adopts welded connection, the bridge deck track 9 is fixed on the T type secondary beam 4 that encorbelments through track anchor clamps.
In this embodiment, the bridge deck track 9 is made of H-shaped steel or i-shaped steel, the track clamp comprises a U-shaped buckle and a pressing plate, and the U-shaped buckle and the pressing plate fix the lower flange of the bridge deck track 9 and the upper flange of the overhanging T-shaped secondary beam 4 in a bolted manner.
In this embodiment, adjacent box roof beams 3 are connected directly over steel-pipe column 6 to set up the expansion joint between the adjacent box roof beam 3, adopt interim sign indicating number board 15 to weld into whole on the top of adjacent box roof beam 3 and the web.
In the embodiment, the overhanging T-shaped secondary beam 4 above the steel pipe column 6 is an H-shaped reinforcing secondary beam 5, and the supporting section steel 14 is welded between the steel pipe column 6 and the reinforcing secondary beam 5 for reinforcement.
In this embodiment, the bridge crane 1 is provided with a stopper 8, and the bridge crane 1 engages the wheels with the track 9 through the stopper 8.
In this embodiment, when the bridge deck crane 1 is in a hoisting operation, the bridge deck crane first travels to the top center position of the steel pipe column 6, the hydraulic legs are lifted and supported on the overhanging T-shaped secondary beam 4, and the anchoring rings 11 on the four corners of the base of the bridge deck crane 1 are anchored with the reserved holes 13 on the reinforcing plates of the column feet of the steel pipe column 6 by the chain block 12.
By adopting the structure, the invention uses the truck crane to erect the stepping section at the entrance, after the bridge deck crane and the beam transporting trolley are installed on the stepping section, the bridge deck crane and the beam transporting trolley carry out subsequent hoisting and transporting operation on the installed bridge deck, after the installation of the full-line structure is completed, the bridge deck crane returns along the original route, and the temporary facilities such as the track and the like are removed, thus completing the installation of the footpath. The method utilizes the installed pavement bridge floor as the equipment hoisting operation foundation and the driving transportation channel, thereby avoiding the influence of the original natural environment, realizing the purpose of adopting mechanized construction on the whole line without excavating and damaging the mountain, thoroughly solving the influence of the natural environment in the complex mountain construction, realizing the purpose of the mechanized construction on the whole line without excavating any mechanical passing sidewalk on the line, protecting the natural ecological environment to the maximum extent, conforming to the construction idea of harmonious relation between people and nature of the pavement project, replacing the traditional mountain manual operation by comprehensively adopting the mechanized construction, reducing the labor intensity of construction operators, reducing the later-stage mountain ecological restoration cost, ensuring the safety, quality and progress of the construction, solving the problem of damaging the original ecological environment in the construction process of the mountain pavement project, and having safe and convenient integral scheme, the method is green and environment-friendly, can greatly improve the working efficiency in the construction process through comprehensive mechanical operation, and has wide popularization and application values for subsequent mountain linear engineering.
In conclusion, the installed bridge deck of the mountain pedestrian path is used as an equipment hoisting operation foundation and a running transportation channel, so that the influence of the original natural environment is avoided, the aim of full-line mechanical construction without excavating and damaging mountains is fulfilled, the influence on the ecological environment of the mountains is small, the construction mechanization degree is high, the labor intensity of mountain construction operation is reduced, the construction safety quality of the path bridge is improved, the ecological restoration cost is saved, and the overall construction cost is reduced.
Drawings
FIG. 1 is a state diagram of the present invention in a construction work;
FIG. 2 is an elevational view of the bridge deck track and overhanging T-shaped secondary beam connection of the present invention;
FIG. 3 is a cross-sectional view of the bridge deck track and overhanging T-shaped secondary beam connection of the present invention;
FIG. 4 is a cross-sectional view of the connection between the bridge deck crane and the girder transporting trolley and the bridge deck track;
FIG. 5 is an anchoring schematic diagram of the bridge deck crane positioned at the top of the steel pipe column;
FIG. 6 is a schematic diagram of reinforcement of the bridge deck crane at the top of a steel pipe column where an expansion joint is located during hoisting;
fig. 7 is a top view of the temporary connection of the box beams at two sides of the expansion joint according to the present invention.
The reference numbers illustrate: 1. a bridge deck crane; 2. a beam transporting trolley; 3. a box body beam; 4. overhanging the T-shaped secondary beam; 5. reinforcing the secondary beam; 6. steel pipe columns; 7. pile foundation bearing platforms; 8. a stopper; 9. a deck track; 10. a rail clamp; 11. an anchoring ring; 12. a chain block; 13. reserving holes; 14. supporting the section steel; 15. and (5) temporarily stacking the boards.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1 to 7, the invention provides a mountain pedestrian path excavation-free mechanized construction method, which specifically comprises the following steps:
1. segmenting the planned mountain pedestrian path route on the mountain according to the preset condition, and constructing a pile foundation bearing platform 7 of each segment on the mountain according to the segmentation;
2. the method comprises the following steps that a steel pipe column 6, a box body beam 3 and an overhanging T-shaped secondary beam 4 are sequentially arranged on a starting section pile foundation bearing platform 7, a bridge deck track 9 is arranged on the overhanging T-shaped secondary beam 4 of the starting section, the bridge deck track 9 is composed of two tracks in parallel arrangement with H-shaped steel or I-shaped steel, the bridge deck track 9 is fixed on the overhanging T-shaped secondary beam 4 through a track clamp 10, the track clamp 10 comprises a U-shaped buckle and a pressing plate, and the U-shaped buckle and the pressing plate bolt and fix a lower flange of the bridge deck track 9 and an upper flange of the overhanging T-shaped secondary beam 4; the U-shaped buckles are made of M14 screws, a set of track clamp 10 is respectively arranged at the contact positions of upper flanges and tracks on the left side and the right side of each overhanging T-shaped secondary beam 4, and the left side and the right side of a bridge deck track 9 are fixed at the same time;
3. the method comprises the following steps that a bridge deck crane 1 and a beam transporting trolley 2 are installed on a bridge deck track 9, the bridge deck crane 1 moves to the position of a pile foundation bearing platform 7 through the bridge deck track 9 and is positioned, specifically, a limiting device 8 is arranged on the bridge deck crane 1, the limiting device 8 comprises a limiting wheel arranged at the bottom of the bridge deck crane 1, and the limiting wheel clamps a track flange from the side surface of the bridge deck track 9, so that a travelling wheel of the bridge deck crane 1 is always positioned right above the track flange; when the bridge deck crane 1 is used for hoisting, firstly, the bridge deck crane 1 is driven to the top center position of the steel pipe column 6, the hydraulic support legs are lifted and supported on the overhanging T-shaped secondary beam 4, and the anchoring rings 11 on the four corners of the base of the bridge deck crane 1 and the reserved holes 13 on the reinforcing plates of the column feet of the steel pipe column 6 are anchored through chain blocks 12 to realize positioning;
4. the method comprises the following steps that a component is transported from a starting section to an operation range of a bridge deck crane 1 through a remote control beam transporting trolley 2 by utilizing a bridge deck track 9, the bridge deck crane 1 lifts the component from the beam transporting trolley 2 to install a next pedestrian path and the bridge deck track 9, when the component is installed, adjacent box girders 3 are connected right above a steel pipe column 6, an expansion joint is arranged between the adjacent box girders 3, the top and a web plate of the adjacent box girders 3 are welded into a whole by adopting a temporary code plate 15, a cantilever T-shaped secondary girder 4 above the steel pipe column 6 adopts an H-shaped reinforcing secondary girder 5, a supporting section steel 14 is further welded between the steel pipe column 6 and the reinforcing secondary girder 5 for reinforcement, the secondary girder below a supporting leg is jacked back through the supporting section steel 14, and the anti-overturning property of the steel girder at the position of the expansion joint is enhanced; in the embodiment, the adjacent bridge deck tracks 9 are welded in the length direction;
5. and repeating the steps until the construction of all mountain pedestrian walks is completed → the bridge deck track 9 and the temporary facilities are dismantled.
In the embodiment, when the mountain pedestrian path route is divided into sections, the splicing node of the box body beam 3 is arranged at the position with smaller bending moment, each span of the box body beam 3 is divided into a column top section and a span middle section or whole span hoisting according to the requirements of span and hoisting weight, and each span of the box body beam 3 is cantilevered forwards by 3.5m after being installed, so that the standing position requirement of the bridge deck crane 1 during column top operation is met; all the box body beams 3 are manufactured in a factory, and are continuously pre-assembled after being manufactured, so that the linear radian and the hole site spacing of the bridge are ensured, and the assembly sequence of the factory is continued to be sequentially butted when the box body beams are installed on site, so that the measurement precision deviation under the complex mountain environment can be reduced, and the installation quality can be ensured;
the mountain pedestrian path and the bridge deck track 9 need to consider the requirements of maximum climbing angle, minimum turning radius, segmented component weight, hoisting radius and the like during design, the suspension arm of the bridge deck crane 1 adopts a telescopic design, the influence of mountain bodies and trees can be avoided after the suspension arm is contracted in the running process, the beam transporting trolley 2 adopts a storage battery to provide power, adopts a remote control system, can freely run on the installed bridge deck track 9, has the carrying capacity meeting the material transportation requirement, and can automatically transport materials to and from a starting point and an installation position.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. A mountain pedestrian path excavation-free mechanized construction method is characterized by comprising the following steps: the method comprises the steps of segmenting a planned mountain pedestrian path on mountains according to preset conditions → segmenting each segment of pile foundation bearing platform (7) on mountains according to segmented construction → sequentially installing a steel pipe column (6), a box body beam (3) and a cantilever T-shaped secondary beam (4) on the starting segment of the pile foundation bearing platform (7) → installing a bridge surface track (9) on the cantilever T-shaped secondary beam (4) of the starting segment of the pile foundation, installing a bridge crane (1) and a beam transporting trolley (2) on the bridge surface track (9) → moving the bridge crane (1) to the position of the next pile foundation bearing platform (7) through the bridge surface track (9), anchoring → utilizing the bridge surface track (9) to transport components from the starting segment to the bridge crane (1) through the bridge surface track (2) → repeatedly installing the next pedestrian path and the bridge surface track (9) through the remote control beam transporting trolley (2) until all steps of constructing the mountain pedestrian path → constructing temporary track (9) and constructing the temporary track (9) and repeating the installation steps of the next pedestrian path → constructing the facility And (4) dismantling.
2. The mountain pedestrian walkway excavation-free mechanized construction method of claim 1, wherein the bridge deck rails (9) are formed by two rails arranged in parallel, the adjacent bridge deck rails (9) are connected in a welding manner in a length direction, and the bridge deck rails (9) are fixed on the overhanging T-shaped secondary beam (4) through rail clamps.
3. The mountain walking path excavation-free mechanized construction method of claim 1, wherein the bridge deck track (9) is made of H-shaped steel or I-shaped steel, the track clamp comprises a U-shaped buckle and a pressing plate, and the U-shaped buckle and the pressing plate bolt and fix a lower flange of the bridge deck track (9) and an upper flange of the overhanging T-shaped secondary beam (4).
4. The mountain pedestrian path excavation-free mechanized construction method according to claim 1, characterized in that adjacent box girders (3) are connected right above the steel pipe column (6), an expansion joint is arranged between the adjacent box girders (3), and the top of the adjacent box girders (3) and the web are welded into a whole by using temporary code plates (15).
5. The mountain pedestrian walkway excavation-free mechanized construction method of claim 4, wherein the overhanging T-shaped secondary beam (4) above the steel pipe column (6) is an H-shaped reinforcing secondary beam (5), and the steel pipe column (6) and the reinforcing secondary beam (5) are further welded with supporting section steel (14) for reinforcement.
6. The mountain pedestrian walkway excavation-free mechanized construction method of claim 1, wherein the bridge crane (1) is provided with a stopper (8), and the bridge crane (1) engages the wheels with the rails (9) through the stopper (8).
7. The mountain pedestrian walkway excavation-free mechanized construction method as claimed in any one of claims 1 to 6, wherein during the hoisting operation of the bridge deck crane (1), the bridge deck crane is firstly driven to the top center position of the steel pipe column (6), the hydraulic legs are lifted and supported on the overhanging T-shaped secondary beam (4), and the anchoring rings (11) on the four corners of the base of the bridge deck crane (1) and the reserved holes (13) on the stiffening plates of the column feet of the steel pipe column (6) are anchored through the chain block (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210186306.5A CN114427199A (en) | 2022-02-28 | 2022-02-28 | Excavation-free mechanized construction method for mountain pedestrian footpath |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210186306.5A CN114427199A (en) | 2022-02-28 | 2022-02-28 | Excavation-free mechanized construction method for mountain pedestrian footpath |
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| CN114427199A true CN114427199A (en) | 2022-05-03 |
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| CN202210186306.5A Pending CN114427199A (en) | 2022-02-28 | 2022-02-28 | Excavation-free mechanized construction method for mountain pedestrian footpath |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115387240A (en) * | 2022-09-20 | 2022-11-25 | 中国铁建重工集团股份有限公司 | High-efficient pore-forming device of bridge fabrication machine pile foundation construction |
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| JP2009024449A (en) * | 2007-07-23 | 2009-02-05 | Tomoya Ota | Building internal staircase and method of constructing the same |
| CN102286935A (en) * | 2011-06-01 | 2011-12-21 | 中铁大桥勘测设计院有限公司 | Brand-new construction method of cable-stayed bridge with hybrid composite beams |
| CN105350453A (en) * | 2015-09-29 | 2016-02-24 | 中国一冶集团有限公司 | Method for hoisting mountain land overhead pedestrian way |
| CN212052327U (en) * | 2019-10-21 | 2020-12-01 | 宁波市政工程建设集团股份有限公司 | Movable type dismounting and hoisting tool for temporary supporting system of small box girder type hidden cover beam of road and bridge prefabrication |
| CN112342928A (en) * | 2020-11-20 | 2021-02-09 | 中铁九桥工程有限公司 | Method for installing cable-stayed bridge of ultrahigh main tower in mountainous area |
-
2022
- 2022-02-28 CN CN202210186306.5A patent/CN114427199A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009024449A (en) * | 2007-07-23 | 2009-02-05 | Tomoya Ota | Building internal staircase and method of constructing the same |
| CN102286935A (en) * | 2011-06-01 | 2011-12-21 | 中铁大桥勘测设计院有限公司 | Brand-new construction method of cable-stayed bridge with hybrid composite beams |
| CN105350453A (en) * | 2015-09-29 | 2016-02-24 | 中国一冶集团有限公司 | Method for hoisting mountain land overhead pedestrian way |
| CN212052327U (en) * | 2019-10-21 | 2020-12-01 | 宁波市政工程建设集团股份有限公司 | Movable type dismounting and hoisting tool for temporary supporting system of small box girder type hidden cover beam of road and bridge prefabrication |
| CN112342928A (en) * | 2020-11-20 | 2021-02-09 | 中铁九桥工程有限公司 | Method for installing cable-stayed bridge of ultrahigh main tower in mountainous area |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115387240A (en) * | 2022-09-20 | 2022-11-25 | 中国铁建重工集团股份有限公司 | High-efficient pore-forming device of bridge fabrication machine pile foundation construction |
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