CN109653096A - The construction method of existing line frame core-tube system is worn under a kind of mountain area - Google Patents
The construction method of existing line frame core-tube system is worn under a kind of mountain area Download PDFInfo
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- CN109653096A CN109653096A CN201811576357.9A CN201811576357A CN109653096A CN 109653096 A CN109653096 A CN 109653096A CN 201811576357 A CN201811576357 A CN 201811576357A CN 109653096 A CN109653096 A CN 109653096A
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- construction
- tube system
- mountain area
- caisson
- existing
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
Abstract
The invention discloses the construction methods that existing line frame core-tube system is worn under a kind of mountain area, it is studied for existing wire frame structure bridge construction is worn under mountain area, pass through the methods of analysis mountain area both wired construction, excavation pile construction, the installation of D type beam, and summarize the safeguard procedures in work progress, it explores and formulates a set of economically feasible, quality safety, duration reasonable frame core-tube system construction method, instruct to wear existing wire frame structure bridge construction under mountain railway.When using caisson support D type beam, the water mill that selection is adapted to mountain railway pile base construction method bores borehole perfusion and constructs, practice have shown that, this method construction is simple is small to both wired Influence to operation.Existing wire frame structure bridge construction technology is worn under western mountainous areas by summarizing, guidance reference is improved for similar construction reformation engineering, not only guarantees the quality and safety of construction, while obtaining good social benefit and economic benefit.
Description
Technical field
The present invention relates to the construction methods that existing line frame core-tube system is worn under a kind of mountain area, belong to urban rail transit technology neck
Domain.
Background technique
As the rapid development of sociaty and economy, more and more traffic routes are not able to satisfy growing transportation demand,
Therefore the expansion of road network scale, the transformation and upgrade on old road, the intersection of new and old road are inevitable, and various traffic route transformations rise
The multilevel traffic synthesis that grade generates continuously emerges.It is adversely affected to eliminate railway and highway plane grade separation bring, therefore iron
Road level crossing need to be changed to crossings on different level road junction, and both railways are transformed frequently with newly-increased frame core-tube system jacking construction method,
Route has many advantages, such as not cut off traffic, just line suspension bridge endlessly after temperature pier.
Mountain railway due to topographic and geologic along the line is complicated, existing railway in length and breadth, it is interlaced, to railway solid intersection
The difficulty of construction of transformation and upgrade is bigger, and restraining factors are more, and usually the duration is tight for Capacity Expansion Project, task weight, while needing to guarantee
Traffic safety and construction quality along the line.
Summary of the invention
It is existing by analysis mountain area it is an object of the invention to be studied for wearing existing wire frame structure bridge construction under mountain area
The methods of line construction, excavation pile construction, the installation of D type beam, and the safeguard procedures in work progress are summarized, it explores and formulates a set of economy
Feasible, quality safety, duration reasonable frame core-tube system construction method, instruct to wear existing wire frame structure bridge construction under mountain railway, have
Important realistic price and directive significance.
To achieve the above object, the technical solution adopted by the present invention is that the construction party of existing line frame core-tube system is worn under a kind of mountain area
Method, this method comprises the following steps:
S1 carries out preparation of construction and measurement and positioning, carries out unwrapping wire measurement to existing line frame core-tube system is worn under mountain area, records existing
The operating condition of existing line frame core-tube system is worn under the position and mountain area of line frame core-tube system.
After the completion of S2 is measured, construction protection is carried out to the construction section for wearing existing line frame core-tube system under mountain area, construction protection includes
Caisson excavates, and carries out lock and panelling construction to caisson；Control caisson is peace with existing railway distance is closed on
Full distance.
The support to D type just beam is completed in S3 binding, lifting steel reinforcement cage, and pour concrete operation to caisson.
To D type, just beam carries out construction and positioning and installs S4, the method that the caisson of support D type just beam takes alternate angle to excavate,
That is the caisson of the D type just odd number beam of beam first excavates, and excavates after the caisson of even number beam, odd number beam and even number beam edge
Newly-increased frame bridge center line laying symmetrical above and below, odd number beam is along laying on the upside of frame bridge center line is increased newly, and even number beam is along new
Increase and is laid on the downside of frame bridge center line.
S5 adds protection breast boards, and protection bulkhead construction is frame bridge and rhone is constructed and carry out case body and top plate is applied
Work, and end aileron construction of bottom plates and end aileron construction.
S6 carries out the backfill of case body and removes D type just beam.
S7 restores route.
Excavation pile construction is used uniformly water mill brill borehole perfusion and constructs.
Compared with prior art, the present invention have following technical advantage, under wear both wired newly-increased frame core-tube system as railway
Level crossing is changed to the important form at crossings on different level road junction, to guarantee that train does not cut off traffic and operation security, meets simultaneously
The quality of construction and duration, rational construction organization plan studies the construction method of key technology, and carries out construction protection and arrange
It applies, it is particularly important to going on smoothly for guarantee construction.
In conjunction with western mountainous areas existent railway implementation feature, both wired constructions, the installation of D type beam and its protection are introduced
Measure, when using caisson support D type beam, the water mill that selection is adapted to mountain railway pile base construction method bores borehole perfusion
It constructs, practice have shown that, this method construction is simple is small to both wired Influence to operation.It is existing by being worn under summary western mountainous areas
Wire frame structure bridge construction technology improves guidance reference for similar construction reformation engineering, not only guarantees the quality and safety of construction, together
When obtain good social benefit and economic benefit.
Detailed description of the invention
Fig. 1 is construction flow chart of the present invention.
Fig. 2 is water mill drilled as holes construction flow chart.
Fig. 3 is D type beam flow of installation.
Fig. 4 is frame core-tube system and both wired, existing culvert plan positional relationship figure.
Specific embodiment
Newly-increased frame core-tube system is located at the existing small pears line Zhongliang Hill station small end bottle-neck section in Chongqing City, the town Hua Yan, Jiulongpo District,
It is located in small pears line jump and pedals station to the Zhongliang Hill station position XLK11+340.Small pears line, shunting neck and the special transport line three of transporting coal are worn under the engineering
Railway, route is jointed track, is located in flat slope section, using without electrified P60 rail, before and after Along Railway in 1 kilometer range
Maximum line slope 14.2 ‰.Frame core-tube system structure type is 1-8 × 5.3m, 22.54 meters of overall length, frame axis and central lines of track
It is orthogonal, it is mainly used for grade separation.Rhone is located at the small mileage side of frame core-tube system, and structure type is 1-0.6 × 1.4m, in axis and route
Heart line is orthogonal, is mainly used for drainning off floodwaters.Newly-increased frame core-tube system site operation position, and frame core-tube system was both wired, existing culvert plan-position
Relationship.
Newly-increased frame core-tube system using D type, just construct by beam construction transition, excavation and cast-in-place, and just beam is carried out D type using 10 caissons
Support, wherein the earthwork is excavated using pneumatic pick, and the cubic meter of stone bores digging hole filling pile construction using water mill.When excavation pile construction finishes and coagulation
After native intensity reaches 100% design strength, D16 just beam overhead transmission line is installed, and carry out frame bridge and rhone earthwork evacuation
And protective baffle plate construction, the construction of case body is then carried out, just beam dismounting, foundation pit is finally carried out and backfills and restore route.
Under wear existing line frame core-tube system D type girder construction process mainly include excavation pile construction, transverse and longitudinal beam installation, protection breast boards
Just four aspects such as beam dismounting, Specific construction process flow are as shown in Figure 1 for construction, D type.
Western mountainous areas existing railway level crossing transformation and upgrade are crossings on different level road junction, and both wired newly-increased frames are worn frequently under
Structure bridge form.It is with a varied topography for mountain railway geology, the features such as way interleave is in length and breadth, difficulty of construction is big, incorporation engineering practice
Experience, in terms of the mobilization to construction overall planning, construction technology process and construction speed in terms of be introduced；For
The safety for guaranteeing mountain railway both wired construction, from construction and safeguard procedures angle to both wired constructions, excavation pile construction with
And D type beam installation etc. has carried out comprehensive induction and conclusion, increases frame core-tube system construction newly for mountain railway from now on and provides reference.
Project duration be 92 days, under wear existing railway frame core-tube system construction for guarantee along the normal vehicling operation of railway, apply
Work task usually can only the operation in Window time section, this engineering is located in western mountainous areas, is faced with that difficulty is big, task weight, time
Tight multiple challenges, thus it is particularly important to the detailed duration planning of each subdivisional work construction speed progress, and table 1 is that this engineering is applied
Work scheduling table.
1 subdivisional work construction schedule calendar of table
When constructing near mountain area existing railway overhead or railway, it should be specifically noted that construction safety, needed before commencement of works
Corresponding entries are handled with departments such as railway traffic management, and formulate scientific and reasonable arrangement and method for construction, establish Safety Management machine
Structure implements construction safety accountability.To guarantee both wired work progress safety, safety accident is maximumlly reduced, should be carried out
Safeguard procedures are mainly reflected in:
(1) carry out project management department-branch-construction team's three-level management system, by construction safety and construction quality, construct into
Degree, project benefit are combined closely, to guarantee the safe construction of mountain area existing railway.
(2) construction scheme signed and recognized is examined without construction unit or higher authority, do not formulate safe practice and arrange
It applies, does not arrive station and handled lock-out scheme, be not allowed to go into operation.
(3) safety education and training is carried out to across both wired construction personnel, implements both wired construction precautions, it is tight to meet burst
The processing method etc. of anxious situation.
Just beam is supported D type using 10 caissons, and 1#, 3#, 5#, 7#, 9# caisson are pedaled direction positioned at jump and increased newly
Draining groove center line had increased frame bridge center line or more newly both hereinafter, 2#, 4#, 6#, 8#, 10# caisson are located at Zhongliang Hill direction
Have culvert center line hereinafter, 10 caisson stakes it is long be 14m；Sectional dimension 2#, 7# is 1.5m × 2.3m, remaining is 1.5m
× 2.3m, all caissons and to close on existing railway distance be 1.45m.1#, 6# caisson close on during excavation pile construction
Zhongliang Hill Sinorael shunting neck, 4#, 5#, 9#, 10# caisson close on middle iron goods and materials industrial siding, and 2#, 3#, 7#, 8# caisson close on small
Pears line.When construction in addition to 2#, 7# using main points construction (want 2~3 points daily, every secondary point 120 minutes, the real time with
Subject to higher level department ratifies the time), remaining stake is all made of supervision construction.
It is unified to adapt to situations, the excavation pile constructions such as western mountainous areas topography is precipitous, narrow space, pile foundation construction condition are limited
It bores borehole perfusion using water mill to construct, water mill, which bores construction technology, has disturbance and destructiveness easy to operate, to rock mass
It is small, advantageously ensure that down the advantages that stability and safety for wearing both wired constructions, it is wide as a kind of novel construction technology
General to be employed in complicated geology landform pile foundation construction, the construction technology process that water mill bores construction technology is as shown in Figure 2.
It, should be mainly to rail track, railroad track and along the line in being closed on both work progress of wired caisson
Optical cable is protected.During excavation pile construction, arranges special messenger to carry out the inspection of line and maintenance, carry out route gauge, water
Flat, direction inspection work, timely processing of finding the problem, it is ensured that railroad embankment safety, while existing photoelectricity should be determined before constructing
The situation of cable, establishes a picket line, and vehicle, equipment and personnel is forbidden to roll optical cable.
The installation of D type beam and safeguard procedures
D type beam is usually used in the bridges and culverts construction of existing line or yard, can utilize in the case where not interrupting railways train operation
It carries out excavation and the construction of bridges and culverts, has many advantages, such as transport and convenient disassembly, shown in D type beam flow of installation Fig. 3.
The danger source that railway operation safety is influenced in frame core-tube system D type beam work progress is main are as follows: construction machine in hoisting process
Tool topples, falling object from high altitude.To guarantee that railway operation is safe, mainly using following construction protection measure in work progress:
(1) reasonable group need to be carried out according to the construction point plan of approval in the just beam handling operation for closing on both wired constructions
It knits, forbids to construct without plan, implement safety measure.
(2) D type beam construction period arranges special messenger to check each portion's component timing of route dimensioning, D type beam, really
Protect traffic safety.
(3) during crane lifting operation, if occurring falling object from high altitude unsafe condition in hoisting process, should within the time to be put and
When will fall off pendant object within the scope of railway remove it is clean.
Fig. 4 is frame core-tube system and both wired, existing culvert plan positional relationship figure.
Claims (2)
1. wearing the construction method of existing line frame core-tube system under a kind of mountain area, it is characterised in that: this method comprises the following steps,
S1 carries out preparation of construction and measurement and positioning, carries out unwrapping wire measurement to existing line frame core-tube system is worn under mountain area, records existing wire frame
The operating condition of existing line frame core-tube system is worn under the position and mountain area of structure bridge；
After the completion of S2 is measured, construction protection is carried out to the construction section for wearing existing line frame core-tube system under mountain area, construction protection includes borehole
Stake is excavated, and carries out lock and panelling construction to caisson；Control caisson and close on existing railway distance be safety away from
From；
The support to D type just beam is completed in S3 binding, lifting steel reinforcement cage, and pour concrete operation to caisson；
To D type, just beam carries out construction and positioning and installs S4, the method that the caisson of support D type just beam takes alternate angle to excavate, i.e. D type
Just the caisson of the odd number beam of beam first excavates, and excavates after the caisson of even number beam, and odd number beam and even number beam are along newly-increased
The laying symmetrical above and below of frame bridge center line, odd number beam increase frame newly along laying on the upside of frame bridge center line, even number beam edge is increased newly
It is laid on the downside of bridge formation center line；
S5 adds protection breast boards, and protection bulkhead construction is frame bridge and rhone is constructed and carries out case body and top board construction,
And end aileron construction of bottom plates and end aileron are constructed；
S6 carries out the backfill of case body and removes D type just beam；
S7 restores route.
2. wearing the construction method of existing line frame core-tube system under a kind of mountain area according to claim 1, it is characterised in that: caisson
Construction is used uniformly water mill brill borehole perfusion and constructs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811576357.9A CN109653096A (en) | 2018-12-22 | 2018-12-22 | The construction method of existing line frame core-tube system is worn under a kind of mountain area |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811576357.9A CN109653096A (en) | 2018-12-22 | 2018-12-22 | The construction method of existing line frame core-tube system is worn under a kind of mountain area |
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| CN109653096A true CN109653096A (en) | 2019-04-19 |
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| CN201811576357.9A Pending CN109653096A (en) | 2018-12-22 | 2018-12-22 | The construction method of existing line frame core-tube system is worn under a kind of mountain area |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111041995A (en) * | 2019-12-30 | 2020-04-21 | 中铁六局集团天津铁路建设有限公司 | Construction method for U-shaped frame structure to penetrate high-speed rail bridge obliquely downwards |
| CN113073573A (en) * | 2021-03-31 | 2021-07-06 | 中铁十九局集团第五工程有限公司 | Modular construction method for passing existing railway under porous large-span frame-structured bridge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111041995A (en) * | 2019-12-30 | 2020-04-21 | 中铁六局集团天津铁路建设有限公司 | Construction method for U-shaped frame structure to penetrate high-speed rail bridge obliquely downwards |
| CN111041995B (en) * | 2019-12-30 | 2021-06-25 | 中铁六局集团天津铁路建设有限公司 | Construction method for U-shaped frame structure to penetrate high-speed rail bridge obliquely downwards |
| CN113073573A (en) * | 2021-03-31 | 2021-07-06 | 中铁十九局集团第五工程有限公司 | Modular construction method for passing existing railway under porous large-span frame-structured bridge |
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Application publication date: 20190419 |
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