CN205348012U - Big longeron system circuit reinforcing construction device - Google Patents

Big longeron system circuit reinforcing construction device Download PDF

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Publication number
CN205348012U
CN205348012U CN201620026534.6U CN201620026534U CN205348012U CN 205348012 U CN205348012 U CN 205348012U CN 201620026534 U CN201620026534 U CN 201620026534U CN 205348012 U CN205348012 U CN 205348012U
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China
Prior art keywords
big longeron
rail
big
frame bridge
bridge
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CN201620026534.6U
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Chinese (zh)
Inventor
王心顺
刘金国
马鹏杰
郭波
沙文杰
王合希
郭小亮
赵增辉
张加徽
刘泰松
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China Railway Fifth Survey and Design Institute Group Co Ltd
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China Railway Fifth Survey and Design Institute Group Co Ltd
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Abstract

The utility model discloses a big longeron system circuit reinforcing construction device, including erectting in the built on stilts device below the rail of existing railway and the frame bridge below locating built on stilts device, the position in four bights of frame bridge is equipped with the fender pile, built on stilts device includes way both sides along the line and the middle fulcrum pile foundation that sets up, and along be equipped with big longeron in the same direction as the circuit direction, the I shaped steel pillow has been crossed to the below of rail in the fulcrum pile foundation, and the both ends of I shaped steel pillow are connected with big longeron respectively, are equipped with between the lower part of the on bridge portion of frame and rail and big longeron and violently lift the roof beam. Guarantee in the at utmost under existing railway driving safety's the condition, can adapt to the conjuncted formula frame bridge of large -span and consolidate the length requirement to the circuit that the space is apart from requiring, use manpower sparingly, material resources, construction cost.

Description

A kind of big longeron system circuit strengthening construction device
Technical field
This utility model relates to a kind of construction technology existing line reinforced when building large span combined frame bridge, particularly relates to a kind of big longeron system circuit strengthening construction device.
Background technology
Fast development along with modern economy, major urban arterial highway, highway, railway are also into the high speed development stage, highway, railway will certainly produce a large amount of crossings on different level, when needs crossings on different level, underpassing scheme will become first-selected, and due to the needs of present urban transportation freight volume, single hole small-bore frame bridge majority can not meet needs, large span porous combined frame bridge could meet user demand.When building frame bridge, existing railway operation will be produced impact, and the circuit in frame bridge construction bridge district coverage is carried out pre-reinforcement is an essential ring, the ring that during construction of frame bridge undercrossing tunnel, risk is the highest especially, therefore railway is carried out pre-reinforcement, it is made to be reduced to minimum by frame bridge construction infection, circuit remains stable for firmly for fundamental purpose, do not allow the least bit lucky, at present, rail track pre-reinforcement mainly has two kinds of methods, and a kind of for lift beam method in length and breadth, another is D type just beam method.
When beam method hardened link is lifted in employing in length and breadth, it is unsettled apart from smaller, if the landslide of front occurrence of large-area, existing railway operation can produce very big potential safety hazard, it addition, it also needs to substitute sleeper, do rail beam, needing material more, put into manpower big, construction cost is big.
Although D type construction beam can make rail track entirety make somebody a mere figurehead, its reinforcing scope is but by considerable restraint, under normal circumstances, its reinforcing scope is generally up to 24m, maximum also less than 36m, additionally it is also relatively big by the constraint of distance between centers of tracks, must meet the requirement of straightway two-wire distance between centers of tracks 4.51≤a < 4.81 of regulation in " railway engineering safety rule " subordinate list 2-3 as 24m-D type construction beam uses, and multiple line distance between centers of tracks is less than 4.51m in a lot of situation, it is unsatisfactory for its erection requirement.
Utility model content
The purpose of this utility model is to provide a kind of strong adaptability, easy construction, big longeron system circuit strengthening construction device that cost is low.
The purpose of this utility model is achieved through the following technical solutions:
Big longeron system circuit strengthening construction device of the present utility model, including the overhead device being set up in below the rail of existing railway and be located at the frame bridge below described overhead device, the position in four corners of described frame bridge is provided with fender pile;
Described overhead device includes along circuit both sides and the middle fulcrum pile foundation arranged, described fulcrum pile foundation is provided with big longeron along along line direction, I shape steel sleeper has been crossed in the lower section of described rail, the two ends of described I shape steel sleeper are connected with described big longeron respectively, be provided with and horizontal lift beam between the bottom of described frame bridge top and described rail and big longeron.
The technical scheme provided by above-mentioned this utility model can be seen that, the big longeron system circuit strengthening construction device that this utility model embodiment provides, when at utmost ensureing existing railway traffic safety, adapt to large span combined frame bridge to track strengthening length requirement, distance between centers of tracks requirement, saves human and material resources, construction cost.
Accompanying drawing explanation
The planar structure schematic diagram of the big longeron system circuit strengthening construction device that Fig. 1 provides for this utility model embodiment.
The longitudinal plane structure schematic diagram of the big longeron system circuit strengthening construction device that Fig. 2 provides for this utility model embodiment.
Fig. 3 is the big longeron cross-sectional view in this utility model embodiment.
Fig. 4 is the I shape steel sleeper cross-sectional view in this utility model embodiment.
In figure: 1-fulcrum pile foundation 2-big longeron 3-I shape steel sleeper 4-splice plate 5-is horizontal lifts beam 6-frame bridge 7-rail 8-fender pile
Detailed description of the invention
This utility model embodiment will be described in further detail below.
Big longeron system circuit strengthening construction device of the present utility model, its preferably detailed description of the invention be:
Including the overhead device being set up in below the rail of existing railway and be located at the frame bridge below described overhead device, the position in four corners of described frame bridge is provided with fender pile;
Described overhead device includes along circuit both sides and the middle fulcrum pile foundation arranged, described fulcrum pile foundation is provided with big longeron along along line direction, I shape steel sleeper has been crossed in the lower section of described rail, the two ends of described I shape steel sleeper are connected with described big longeron respectively, be provided with and horizontal lift beam between the bottom of described frame bridge top and described rail and big longeron.
The method that big longeron system circuit strengthening construction device of the present utility model realizes anchor line (string) road strengthening construction, including step:
First, according to the horizontal arrangement pitch hand excavation's fulcrum pile foundation lifting beam between the line of the both sides of existing railway and suitable line direction, and excavate the fender pile basis of frame bridge corner simultaneously;
Then, utilizing railcar to transport big longeron, before transporting big longeron, part I shape steel sleeper is worn in first horizontal path direction in advance, is used for fixing big longeron;
After big longeron is in place, carry out the connection of the longitudinal spliced plate of big longeron, and tighten the connecting bolt of big longeron and I shape steel sleeper, execute wear then according to the arrangement pitch of I shape steel sleeper carries out the I shape steel sleeper in big longeron length range, when wearing steel sleeper, special messenger protects with insulation rubber cushion respectively under two strands of rails, prevent steel sleeper from directly contacting with rail and cause track circuit short circuit, after steel sleeper installation in position, the insulation rubber cushion under rail is motionless, and timber wedge is squeezed in space between rail and I shape steel sleeper, the live load from train is made to transfer on aerial construction;
Horizontal beam of lifting is previously positioned at frame bridge end face, and along with Framed underpass bridge, gradation is worn horizontal beam of lifting and is passed through circuit, then arranges timber wedge between beam and rail and big longeron horizontal lifting, and horizontal lifting arranges lumps of wood buttress between beam and fulcrum stake and frame bridge;
Time within Framed underpass bridge distance fulcrum stake 1m, being abolished by vicinity one campshed affecting jacking within the scope of Framed underpass bridge, complete horizontal beam fulcrum stress system conversion of lifting, other a few campshed is abolished in such circulation, make Framed underpass bridge in place, after framework pontic jacking puts in place, remove described built on stilts system, change and supplement one-level railway ballast, change III type bridge tie wood, installing guard rail, affiliated facility is constructed, and recovers circuit.
In Framed underpass bridge process, when frame bridge enters subgrade soil, eat in soil jack-in process, often circulation shoveling drilling depth is less than 2.0m, and when soil property is bad, then the top Cheng Jinhang pressing jack excavates, namely dig the earthwork of a top journey, the jacking body of a bridge immediately, make the body of a bridge tightly cut excavation face.
Described horizontal two, beam of lifting is one group, and centre tightening latch is attached.
Described big longeron is that 16m length is a piece of, adopts support bar to be supported along line direction every 1~2m.
Big longeron system circuit reinforced construction method of the present utility model, when at utmost ensureing existing railway traffic safety, adapt to large span combined frame bridge to track strengthening length requirement, distance between centers of tracks requirement, the frame bridge construction that track strengthening length is longer can be adapted to very well;Distance between centers of tracks is less demanding, it is possible to be easy for meeting the situation that multiple line distance between centers of tracks is little by the setting of big longeron;A large amount of manpower and materials can be saved, reduce construction cost;Structure stress is clear and definite, and system transform is also relatively easy, it is easy to control.
Specific embodiment:
With reference to accompanying drawing 1~4, including following construction procedure.
During jacking, first lifting beam arrangement pitch hand excavation's fulcrum pile foundation (1) and frame bridge corner fender pile basis (8) (along line direction) according to horizontal between the both sides of existing railway and line, every campshed basis quantity is comprehensively determined according to frame structure total span and pile spacing.Then block main points utilize the railcar transport big longeron of 16m (2), and before transporting big longeron, part I shape steel sleeper (3) is worn in first horizontal path direction in advance, are used for fixing big longeron and use.After big longeron is in place, carries out the longitudinal spliced plate of big longeron (4) and connect, and tighten the connecting bolt of big longeron and I shape steel sleeper.Then according to I shape steel sleeper arrangement pitch, carry out the I shape steel sleeper in big longeron length range to execute and wear, when wearing steel sleeper, special messenger protects with insulation rubber cushion respectively under two strands of rails, prevent steel sleeper from directly contacting with rail and cause track circuit short circuit, after steel sleeper installation in position, the insulation rubber cushion under rail is motionless, and timber wedge is squeezed in space between rail and steel sleeper, the live load from train is made to transfer on aerial construction.Built on stilts location steel sleeper spacing press 60cm layout, as with horizontal lift beam (5) location overlap time do not arrange.Horizontal beam of lifting is previously positioned at frame bridge (6) end face, and according to fulcrum system conversion requirement in advance, along with Framed underpass bridge, gradation is worn horizontal beam of lifting and passed through circuit.Then timber wedge is set horizontal lifting between beam and rail, big longeron, horizontal lifts beam and fulcrum stake, lumps of wood buttress is set between frame bridge.When frame bridge enters subgrade soil, eating in soil jack-in process, often circulation shoveling drilling depth and the gradient should be determined according to soil property, facility and track strengthening situation, should not backbreak.Generally excavate drilling depth no more than 2.0m every time.When soil property is bad, then should excavate by the top journey (50cm) of jack;Namely dig the earthwork of a top journey, the jacking body of a bridge immediately, make the body of a bridge tightly cut excavation face.Time within Framed underpass bridge distance fulcrum stake 1m, being abolished by vicinity one campshed affecting jacking traveling within the scope of Framed underpass bridge, complete horizontal beam fulcrum stress system conversion of lifting, other a few campshed is abolished in such circulation, make Framed underpass bridge in place, after framework pontic jacking puts in place, remove built on stilts system, change and supplement one-level railway ballast, change III type bridge tie wood, installing guard rail, affiliated facility is constructed, and recovers circuit.
Big longeron is 1m height monolithic H profile steel, described I-steel crossbeam 0.2m height shaped steel, and material is Q345 steel, described horizontal lift beam to be that H profile steel, model and sheet are several determine according to calculating, and material can be the multiple kinds such as Q345 and Q235.
Horizontal beam rear end fulcrum of lifting drops on the roller support of frame bridge top, and front end fulcrum falls in fulcrum stake on the line, and at horizontal beam and the longeron lifted, horizontal beam of lifting arranges the lumps of wood and timber wedge with stake top, it is prevented that promote existing line to occur in framework jack-in process traversing.Impact driving.In order to prevent circuit rail traversing, affect traffic safety, adopt support bar to be supported along line direction every 1~2m.
Horizontal beam of lifting to calculate according to arrangement pitch and the on-the-spot actual construction Work condition analogue that passes through, and chooses horizontal beam type number, the material of lifting, and sheet number etc., in order to strengthen horizontal beam globality of lifting, horizontal two one group of beam of lifting, centre tightening latch is attached.
Big longeron will according to on-site actual situations, when distance between centers of tracks meets and arranges the big longeron of two panels between line, can completely across layout, when being unsatisfactory for arranging that two panels requires, can only arrange between line a piece of, share longeron as two station tracks, but now need to arrange middle horizontal lift, to reduce big longeron span, meet its stress and deformation requirements.
It addition, big longeron is that 16m length is a piece of, it is possible to determine big longeron sheet number according to track strengthening length, track strengthening length is had very strong adaptability.
The above; it is only this utility model preferably detailed description of the invention; but protection domain of the present utility model is not limited thereto; any those familiar with the art is in the technical scope that this utility model discloses; the change that can readily occur in or replacement, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.

Claims (1)

1. a big longeron system circuit strengthening construction device, it is characterized in that, including be set up in existing railway rail (7) lower section overhead device and be located at the frame bridge (6) below described overhead device, the position in four corners of described frame bridge (6) is provided with fender pile (8);
Described overhead device includes along circuit both sides and the middle fulcrum pile foundation (1) arranged, described fulcrum pile foundation (1) is upper is provided with big longeron (2) along along line direction, I shape steel sleeper (3) has been crossed in the lower section of described rail (7), the two ends of described I shape steel sleeper (3) are connected with described big longeron (2) respectively, be provided with and horizontal lift beam (5) between the bottom of described frame bridge (6) top and described rail (7) and big longeron (2).
CN201620026534.6U 2016-01-12 2016-01-12 Big longeron system circuit reinforcing construction device Active CN205348012U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620026534.6U CN205348012U (en) 2016-01-12 2016-01-12 Big longeron system circuit reinforcing construction device

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Application Number Priority Date Filing Date Title
CN201620026534.6U CN205348012U (en) 2016-01-12 2016-01-12 Big longeron system circuit reinforcing construction device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105464008A (en) * 2016-01-12 2016-04-06 中铁第五勘察设计院集团有限公司 Large longitudinal beam system line reinforcement construction device and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105464008A (en) * 2016-01-12 2016-04-06 中铁第五勘察设计院集团有限公司 Large longitudinal beam system line reinforcement construction device and method

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