CN112709147A - Line overhead method suitable for high underground water level - Google Patents
Line overhead method suitable for high underground water level Download PDFInfo
- Publication number
- CN112709147A CN112709147A CN202011579525.7A CN202011579525A CN112709147A CN 112709147 A CN112709147 A CN 112709147A CN 202011579525 A CN202011579525 A CN 202011579525A CN 112709147 A CN112709147 A CN 112709147A
- Authority
- CN
- China
- Prior art keywords
- overhead
- piles
- pile
- hole digging
- manual hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
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
Abstract
The invention relates to a line overhead method suitable for a high underground water level, which comprises the following steps: constructing a plurality of groups of manual hole digging piles, wherein the plurality of groups of manual hole digging piles are longitudinally arranged along the existing line at intervals, and longitudinal beams and cross beams are arranged on the plurality of groups of manual hole digging piles to make temporary line overhead; and (3) carrying out construction of a second wheel carrier hollow pivot, and specifically comprising the following steps: digging a working pit between every two adjacent groups of manual hole digging piles, constructing a group of drilled piles in the working pit, and lengthening the drilled piles to a design height; and (4) converting the overhead supporting point to the drilled pile from the manual hole digging pile to complete local secondary overhead. The invention adopts a mode of transition conversion between pile forming and fulcrum pile twice, indirectly avoids the hole digging operation risk below the underground water level, ensures the feasibility and the safety of an overhead system, can solve the restriction of adverse factors such as overhigh underground water level, limited railway space and the like on the construction of the overhead fulcrum pile, and has better economic benefit and construction guiding significance.
Description
Technical Field
The invention belongs to the technical field of bridge engineering, and particularly relates to a line overhead method suitable for a high underground water level.
Background
An important step of the construction of the jacking frame bridge is overhead line construction, and under the general condition, the construction of overhead fulcrum piles adopts drilled piles or manually dug piles according to construction conditions.
However, in some areas, the underground water level is high, the line conditions are complex, and the like, if the overhead fulcrum piles are directly drilled piles, the construction cannot be performed due to the limited drilling space between railway lines, and if the manual drilled piles are adopted, the construction cannot be performed below the underground water level. Therefore, the construction process of the traditional fulcrum pile cannot meet the requirements, and a line overhead system with stronger adaptability needs to be provided so as to solve the problems caused by overhigh underground water level and complex line conditions.
Disclosure of Invention
The invention relates to a method for making a line overhead suitable for high underground water levels, which can solve at least part of the defects of the prior art.
The invention relates to a method for making a line overhead suitable for a high underground water level, which comprises the following steps,
s1, the construction of the overhead pivot of the first wheel is carried out, and the construction method specifically comprises the following steps:
constructing a plurality of groups of manual hole digging piles, wherein the plurality of groups of manual hole digging piles are longitudinally arranged at intervals along the existing line, and longitudinal beams and cross beams are arranged on the plurality of groups of manual hole digging piles to make temporary line overhead;
s2, performing second wheel carrier hollow pivot construction, specifically comprising:
s21, cutting and excavating a working pit between every two adjacent groups of manual hole digging piles, constructing a group of drilled piles in the working pit, and lengthening the drilled piles to a design height;
and S22, converting the overhead supporting point from the manual hole digging pile to the drilling pile to complete local secondary overhead.
As one embodiment, the method for converting the overhead fulcrum from the manual dug pile to the drilled pile comprises the following steps: and a cross-lifting beam group is arranged on the pile top of the corresponding drilled pile in a penetrating way.
As one embodiment, after the local secondary overhead construction is completed, the corresponding working pit is backfilled and tamped.
In an embodiment, in S11, the longitudinal beams and the lateral beams are attached by a lateral lift and vertical lift method.
As one embodiment, the distance between two adjacent groups of artificial dug piles is not more than 10 m.
The invention has at least the following beneficial effects:
the line overhead method provided by the invention provides a transition conversion mode of forming piles twice and fulcrum piles from the viewpoint of ensuring construction feasibility by optimizing construction steps and the structural design of overhead fulcrum piles, indirectly avoids the hole digging operation risk below the underground water level, ensures the feasibility and safety of an overhead system, has clear division of the construction stages and clear structural force transmission path, fully exerts the characteristic of strong bearing capacity of a pile foundation, can generally solve the restriction of adverse factors such as overhigh underground water level, limited railway space and the like on the construction of the overhead fulcrum piles, and has better economic benefit and construction guiding significance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an overhead pivot transition of a single bored pile according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an overhead pivot transition for a plurality of bored piles according to an embodiment of the present invention;
fig. 3 is a schematic view of an installation structure of a cross-lift beam and a longitudinal beam provided by an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
Referring to fig. 1 and 2, an embodiment of the present invention provides a method for making a line overhead suitable for a high groundwater level, including,
s1, the construction of the overhead pivot of the first wheel is carried out, and the construction method specifically comprises the following steps:
constructing a plurality of groups of manual hole digging piles 1, wherein the plurality of groups of manual hole digging piles 1 are longitudinally arranged at intervals along the existing line, and longitudinal beams 4 and cross beams are arranged on the plurality of groups of manual hole digging piles 1 to make temporary line overhead; generally, each group of artificial dug piles 1 includes a plurality of artificial dug piles 1 arranged at intervals in the transverse direction along the existing line; in one embodiment, the distance between two adjacent groups of artificial dug piles 1 is not more than 10 m; the construction of the manual hole digging pile 1 is a conventional technology, and generally, a hole is formed after the manual hole digging is carried out to be close to a groundwater level line and a pile is formed by pouring; in the embodiment, the diameter of the manual hole digging pile 1 is about 1.5m, and the pile length is about 7 m;
preferably, the temporary line overhead system meets the requirement of slow running of the train of 45 km/h.
S2, performing second wheel carrier hollow pivot construction, specifically comprising:
s21, cutting and excavating a working pit 3 between every two adjacent groups of manual hole digging piles 1, constructing a group of hole digging piles 2 in the working pit 3, and lengthening the hole digging piles 2 to a design height;
similarly, a set of bored piles 2 includes a plurality of bored piles 2 arranged laterally at intervals along an existing course; the construction of the bored pile 2 and the extension construction of the bored pile 2 are both conventional techniques, and in this embodiment, a GF-200 type reverse circulation drilling machine is used to perform the construction of the bored pile 2.
S22, converting the overhead supporting point from the manual hole digging pile 1 to the drilled pile 2 to complete local secondary overhead; preferably, the cross beam set is arranged on the pile top of the corresponding drilling pile in a penetrating mode so as to realize the conversion of the overhead fulcrum.
Further preferably, after the local secondary overhead construction is completed, the gaps of the roadbed of the pile drilling platform are backfilled and tamped (i.e. the corresponding working pits 3 are backfilled and tamped).
According to the line overhead method provided by the embodiment, through optimizing construction steps and the structural design of the overhead fulcrum piles, from the perspective of ensuring construction feasibility, a transition conversion mode of forming piles twice and fulcrum piles is provided, the hole digging operation risk below the underground water level is indirectly avoided, and the feasibility and safety of an overhead system are ensured.
In step S11, the longitudinal beams 4 and the cross beams are installed by a transverse lifting and longitudinal picking method. In one embodiment, as shown in fig. 1-3, a plurality of I45a I-shaped steel beams (4-6I-shaped steel beams) are adopted for a transverse lifting beam 51 group serving as a fulcrum of a longitudinal beam 4 arranged at the pile top of a bored pile 2, the rest of common cross beams 52 are made of 2I 45a I-shaped steel beams, and the distance between every two adjacent common cross beams 52 is less than 0.55 m; the conventional beams 52 pass through the rail foot of the existing track, and the conventional beams 52 must be reliably insulated from the rail. In one embodiment, two longitudinal beams 4 are arranged on each cross beam, and each longitudinal beam 4 is made of 2I 100I-shaped steel sheets; the longitudinal beam 4 needs to be reliably connected by using a special gusset plate and a high-strength bolt during extension, and the cross beam and the longitudinal beam 4 need to be reliably connected by using a special fitting. Further preferably, a wooden support is provided between the outer side of the rail of the existing track and the longitudinal beam 4 at a predetermined distance (for example, 1.5 to 2m) to ensure the lateral stability of the track.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A method for making a line overhead suitable for a high underground water level is characterized by comprising the following steps,
s1, the construction of the overhead pivot of the first wheel is carried out, and the construction method specifically comprises the following steps:
constructing a plurality of groups of manual hole digging piles, wherein the plurality of groups of manual hole digging piles are longitudinally arranged at intervals along the existing line, and longitudinal beams and cross beams are arranged on the plurality of groups of manual hole digging piles to make temporary line overhead;
s2, performing second wheel carrier hollow pivot construction, specifically comprising:
s21, cutting and excavating a working pit between every two adjacent groups of manual hole digging piles, constructing a group of drilled piles in the working pit, and lengthening the drilled piles to a design height;
and S22, converting the overhead supporting point from the manual hole digging pile to the drilling pile to complete local secondary overhead.
2. A line striping method as in claim 1, wherein the method of converting an overhead support point from a manually dug pile to a bored pile comprises: and a cross-lifting beam group is arranged on the pile top of the corresponding drilled pile in a penetrating way.
3. A line overhead method as claimed in claim 1, wherein: and after the local secondary overhead construction is finished, backfilling the corresponding working pit and tamping.
4. A line overhead method as claimed in claim 1, wherein: in S1, the longitudinal beams and the transverse beams are installed by a transverse lifting and longitudinal picking method.
5. A line overhead method as claimed in claim 1, wherein: and the distance between two adjacent groups of manual hole digging piles is not more than 10 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011579525.7A CN112709147A (en) | 2020-12-28 | 2020-12-28 | Line overhead method suitable for high underground water level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011579525.7A CN112709147A (en) | 2020-12-28 | 2020-12-28 | Line overhead method suitable for high underground water level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112709147A true CN112709147A (en) | 2021-04-27 |
Family
ID=75545690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011579525.7A Withdrawn CN112709147A (en) | 2020-12-28 | 2020-12-28 | Line overhead method suitable for high underground water level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112709147A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006161548A (en) * | 2004-11-11 | 2006-06-22 | Sanyo Kenzai Kk | Temporary pier, erection method for temporary pier, carriage used for temporary pier, and pile driving method using temporary pier |
| CN109537566A (en) * | 2018-11-30 | 2019-03-29 | 江苏省建筑设计研究院有限公司 | A method of it is reinforced suitable for existing artificial foundation is transformed |
| CN110965486A (en) * | 2019-12-18 | 2020-04-07 | 中铁七局集团郑州工程有限公司 | Method for constructing frame culvert in existing railway hard overhead |
| CN111236040A (en) * | 2020-01-08 | 2020-06-05 | 中铁二院工程集团有限责任公司 | D-shaped temporary beam erecting method for underneath passing through railway frame bridge type tunnel |
| CN111676819A (en) * | 2020-06-08 | 2020-09-18 | 中铁六局集团太原铁路建设有限公司 | Jacking construction method for combined type temporary beam continuous reinforced line large-span frame structure bridge |
-
2020
- 2020-12-28 CN CN202011579525.7A patent/CN112709147A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006161548A (en) * | 2004-11-11 | 2006-06-22 | Sanyo Kenzai Kk | Temporary pier, erection method for temporary pier, carriage used for temporary pier, and pile driving method using temporary pier |
| CN109537566A (en) * | 2018-11-30 | 2019-03-29 | 江苏省建筑设计研究院有限公司 | A method of it is reinforced suitable for existing artificial foundation is transformed |
| CN110965486A (en) * | 2019-12-18 | 2020-04-07 | 中铁七局集团郑州工程有限公司 | Method for constructing frame culvert in existing railway hard overhead |
| CN111236040A (en) * | 2020-01-08 | 2020-06-05 | 中铁二院工程集团有限责任公司 | D-shaped temporary beam erecting method for underneath passing through railway frame bridge type tunnel |
| CN111676819A (en) * | 2020-06-08 | 2020-09-18 | 中铁六局集团太原铁路建设有限公司 | Jacking construction method for combined type temporary beam continuous reinforced line large-span frame structure bridge |
Non-Patent Citations (1)
| Title |
|---|
| 李文浩: ""高地下水位道岔区顶进框架线路加固设计"", 《铁道建筑技术》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203960700U (en) | The closed road structure of stake holder U-lag | |
| CN111236040A (en) | D-shaped temporary beam erecting method for underneath passing through railway frame bridge type tunnel | |
| CN105804119A (en) | Underground corridor structure with dual-purpose pile foundations and construction method of underground corridor structure | |
| CN105464008A (en) | Large longitudinal beam system line reinforcement construction device and method | |
| CN107675633A (en) | The method that the existing whole hole of bridge is changed | |
| CN111412002A (en) | Anchor cable counter-pulling type supporting structure system and construction method | |
| CN105951537A (en) | Rib column distributed turnout foundation structure of middle-low speed magnetic levitation low-arranged line | |
| CN102505697A (en) | Method for excavating deep foundation pits under temporary bridge of main line railway | |
| CN110924436A (en) | Railway frame bridge jacking front guide type steel box shed edge angle and construction method thereof | |
| CN212003231U (en) | Anchor rope is to drawing type supporting construction system | |
| CN210118138U (en) | Reinforcing structure for large-span tunnel to pass existing railway downwards | |
| CN111119905A (en) | Reserved support pile structure system for post-construction engineering crossing subway station and construction method thereof | |
| CN112709147A (en) | Line overhead method suitable for high underground water level | |
| CN111910534A (en) | D-shaped temporary beam line reinforcing method and structure under complex geological condition | |
| CN207293981U (en) | The hanging apparatus of two lining trolleys in a kind of sand gravel tunnel | |
| CN209759904U (en) | integral broken line overhead device for small radius curve railway | |
| CN206157489U (en) | Moderate -low speed magnetic levitation double -line excavation location supporting beam of pile foundation framing type support rail girder construction | |
| CN114134801A (en) | Main beam dismantling structure and dismantling construction method for overwater large-span tied arch bridge | |
| CN112878216A (en) | Suspension type railway underpass box culvert jacking track reinforcing method | |
| CN210174677U (en) | Hard crossing for changing electrified railway into moving | |
| CN208184752U (en) | The bottom stab ilization system in rich water soft stratum heavy haul railway tunnel | |
| CN210152663U (en) | Modular rectangle top iron structure | |
| CN112854293A (en) | Structure of wall door opening of subway station auxiliary and main body connecting section and construction process thereof | |
| CN112879033A (en) | Crossover section tunnel structure combined with shield tunnel | |
| CN105908579A (en) | Railway track foundation online reinforcing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210427 |