CN102926299A - Railway elevating and fixing device and railway bridge and culvert construction method adopting railway elevating and fixing device - Google Patents
Railway elevating and fixing device and railway bridge and culvert construction method adopting railway elevating and fixing device Download PDFInfo
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- CN102926299A CN102926299A CN2012104674288A CN201210467428A CN102926299A CN 102926299 A CN102926299 A CN 102926299A CN 2012104674288 A CN2012104674288 A CN 2012104674288A CN 201210467428 A CN201210467428 A CN 201210467428A CN 102926299 A CN102926299 A CN 102926299A
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Abstract
The invention discloses a railway elevating and fixing device and a railway bridge and culvert construction method adopting the railway elevating and fixing device. The railway elevating and fixing device comprises longitudinal beams and a sleeper beam, the sleeper beam penetrates through a track downwards and is parallel to a concrete sleeper, the top parts at the two ends of the sleeper beam are respectively and fixedly connected with one longitudinal beam perpendicular to the sleeper beam, and a support point pile used for supporting a beam body is fixed under the longitudinal beam. The railway elevating and fixing device and the railway bridge and culvert construction method adopting the railway elevating and fixing device solve the problem that the fixing effect of the traditional railway bridge and culvert construction method can not meet the requirements for the railway speed, and the elevation span can not meet the requirements for large span bridge and culvert passing.
Description
Technical field
The invention belongs to the road and bridge engineering field, be specifically related to the built on stilts fastening devices of a kind of railway and adopt this device to increase the method for building the railway bridges and culverts.
Background technology
The current national railway network basically forms, and road network grade is more and more higher, along with expanding economy, the fast developments such as urban road, highway, shipping traffic, the phenomenon of highway, across-river railway is very general, and it is also increasing to pass through span, and the railway grade separation develops into the porous big frame by the little bridges and culverts of original single hole.Original D type horizontal beam construction method of lifting of beam construction method and hanger rail of constructing just increases bridge construction at current existing track circuit to contain span increasing, be used in big frame construction and the present increasing situation of line conditions, many deficiencies have been presented, mainly contain following aspect: 1, the D type beam of constructing just is single-beam series, maximum applicable span 24m, cause can not be connected to continuous beam, thus limited by span, inapplicable during the big frame jacking.2, the D type constructs just that the sleeper beam spacing of beam is fixed as 67cm, and the spacing of III type concrete crosstie is 60cm, therefore, and demanding party's pillow and take out pillow when setting a roof beam in place is large to the circuit disturbance.3, the construct longeron quality of just beam of D type is large, and span is long, is unfavorable for lifting under the contact net of electric railway, and traffic condition and Road Site condition are all restricted.There is following shortcoming in the horizontal beam method of lifting of hanger rail: 1, the horizontal beam method of lifting of hanger rail does not have the fulcrum stake at roadbed, horizontally lifts beam and the hanger rail beam is done fulcrum by roadbed fully, therefore, in the situation that there is not reliable guarantee to excavate roadbed, has potential safety hazard to exist.2, the horizontal horizontal beam stress span of lifting of lifting the beam method of hanger rail is large, causes the horizontal beam deflection of lifting large, affects the circuit driving, even potential safety hazard is arranged.3, at present the railway system requires the minimum Speed limit of 48kmh of construction to be not less than 45 kilometers because of the needs of transport power, and the horizontal beam method of lifting of hanger rail only can satisfy 35 kilometers/following speed limit per hour, therefore can not adapt to the actual needs of current rail system.
Summary of the invention
Increase and build that railway bridges and culverts form of construction work fixed effect can not satisfy existing railway rate request and built on stilts span is little can't satisfy the problems such as the large span bridges and culverts passes through in order to solve tradition, the present invention has designed the built on stilts fastening devices of a kind of railway and has adopted this device to increase the method for building the railway bridges and culverts.
The technical scheme that the present invention addresses the above problem is: a kind of railway is maked somebody a mere figurehead fastening devices, described device comprises longeron and sleeper beam, wear track under the sleeper beam and be parallel to the concrete pillow, top, sleeper beam two ends is fixedly connected with respectively a perpendicular longeron, and the longeron below is fixed with the fulcrum stake of brace summer body.Its advantage is: the longeron at sleeper beam two ends is with the form overhead wire of continuous beam, transmit load of roadway take the fulcrum stake that distributes as fulcrum, when jacking big frame bridges and culverts, not limited by girder span, as long as according to the circuit different situations, fulcrum rationally is set, just can satisfy the built on stilts fixing needs of big frame circuit, and every safety technics index of assurance circuit, satisfy railway minimum operation speed 45km/h requirement.Adopt this apparatus structure hardened link, the circuit physical dimension can keep train in the constant speed standard, and circuit is stable, and beam rigidity is large in length and breadth, and is safe and reliable, and driving steadily.
Described railway is maked somebody a mere figurehead fastening devices, and longeron one side is fixed with gear cap stake in parallel, and gear cap stake and the fulcrum stake top corresponding with its position have wears for vertical time and the horizontal beam group of lifting of support stringer.Its advantage is: the horizontal beam group of lifting is comprised of large-scale i iron, be located at fulcrum stake, gear cap stake and frame bridge top, when frame bridge jacking during to fulcrum stake fulcrum, lift the beam transition through horizontal, frame bridge bears the horizontal load of lifting the beam group, with fulcrum stake unloading, and the first row fulcrum stake of removing, simultaneously other row's fulcrum stake guarantees that track circuit is stable.Even when removing last row's fulcrum stake, the stake of gear cap is also arranged as the strong point, guarantee the frame bridge reliable fulcrum that whenever taken a step forward, prevent track circuit distortion displacement, until that frame bridge continues jacking is in place to frame bridge.
Described railway is maked somebody a mere figurehead fastening devices, and gear cap stake top is stepped gear cap, and a horizontal end of lifting the beam group withstands on the sidewall of gear cap.Its advantage is: gear cap stake top is stepped gear cap, and gear cap sidewall withstands a horizontal end of lifting the beam group, horizontally when preventing the frame bridge jacking lifts the orbit displacement that horizontal sliding force that the beam group produces track causes.
Described railway is maked somebody a mere figurehead fastening devices, gear cap stake with horizontal lift the beam group by pre-buried rail be fixedly connected with.Its advantage is: prevent horizontal lift the beam group when outwards sliding track produce horizontal sliding force and cause to skew.
Described railway is maked somebody a mere figurehead fastening devices, longeron by a plurality of workers just beam connect by the junction plate equal strength.Its advantage is: longeron can select I115 type worker just beam, I100 type worker just beam, X38 case beam etc. are fixedly connected with, it is just beam of I115 type worker that H100 type rice steel is changed a social system, and changing material into Q345B bridge steel by original No. three steel does, strengthened the use span of longeron, strengthened the intensity of longeron, reduce the amount of deflection of beam, strengthened the moment of inertia of beam, improved the rigidity of beam.
Described railway is maked somebody a mere figurehead fastening devices, and junction plate is by web, and outer cover plate and inner cover plate form, and fixedly covers the worker just between the beam, by bolt with the worker just beam be connected to one.Its advantage is: just the bonding strength between the beam is identical with the beam body to guarantee the worker, no effect on longitudinal-beam span and fulcrum stake position.
Described railway is maked somebody a mere figurehead fastening devices, and track is fixedly connected with by fastener with sleeper beam.Its advantage is: control circuit direction and gauge, and every sleeper beam arranges 2 pairs of rail fastenings, and the control orbital position is constant.
Described railway is maked somebody a mere figurehead fastening devices, and fastener and track contact position are lined with nylon insulation angle.Its advantage is: avoid the generation of track circuit connection electrification.
Structure of the present invention has been drawn D type beam and the horizontal advantage of lifting the beam method of traditional hanger rail, has avoided the deficiency of above-mentioned two kinds of job practicess, single hole just beam become the continuous beam that can prolong to greatest extent, shortened simultaneously the stressed span of longeron; The intensive horizontal beam of lifting is become the horizontal beam group of lifting, reduced the friction point of circuit and framework; Anti-ly move the fulcrum stake that stake becomes distribution to what concentrate, the framework reliable fulcrum carrying circuit that whenever taken a step forward again in conjunction with the measure of control circuit direction and gauge, makes circuit remain at steady, firm, safe state.This hardened link structure, circuit physical dimension can make train remain on the constant speed standard, and circuit is stable, and beam rigidity is large in length and breadth, and is safe and reliable, and driving steadily.
A kind of built on stilts fastening devices of railway that adopts increases the method for building the railway bridges and culverts, and it comprises the steps:
1) fulcrum stake and gear cap pile driving construction, in the built on stilts fastening devices of railway longeron yet to be built below, fulcrum is determined in and the fixing horizontal beam group position of lifting that is used for that is parallel to longeron one side, borehole is also built steel concrete and is formed fulcrum stake and the stake of gear cap.
2) wear sleeper beam, sleeper beam is worn track from concrete pillow is aerial under vertical;
3) set up longeron, with the worker just erection be fixedly connected into longeron at top, sleeper beam two ends by junction plate;
4) longeron and sleeper beam fixed connection;
5) fastener for installing is fixed as one track and sleeper beam by fastener;
6) penetrate the horizontal beam group of lifting, horizontal lifting worn longeron and be fixed on the fulcrum stake and gear cap stake top under the beam group, finish circuit built on stilts fixing;
7) excavation roadbed, simultaneously frame bridge jacking;
8) when the frame bridge front end arrived at first row fulcrum stake limit, frame bridge bore the horizontal load of lifting the beam group, with fulcrum stake unloading, and the first row fulcrum stake of removing;
9) continue the shoveling jacking, the process of repeating step 8 is until frame bridge is in place.
In sum, beneficial effect of the present invention is: 1, owing to being fabricated construction, can rationally arrange according to different engineering characteristics, be applicable to various circuits, framework and geological condition; 2, because the sleeper beam spacing is adjustable, little to perturbing of railway roadbed during overhead wire, do not destroy the existing line physical dimension, security performance is good; 3, simple in structure, set up and piece together prescription just; 4, automobile, trailer all can transport, and get the raw materials ready conveniently, and the hoisting transportation cost is low; 5, the railway that is not only applicable to railway main track, station track is maked somebody a mere figurehead, and the railway that also is applicable to the bottle-neck section siding simultaneously is built on stilts.
Description of drawings
Fig. 1 is cross section of the present invention and jacking schematic diagram;
Fig. 2 is track strengthening floor map of the present invention;
Fig. 3 is the built on stilts vertical section of circuit of the present invention schematic diagram;
Fig. 4 is just girder construction front view of worker of the present invention;
Fig. 5 is just girder construction top view of worker of the present invention;
Fig. 6 is just girder construction sectional view of worker of the present invention;
Fig. 7 be worker of the present invention just beam connect into the longeron schematic diagram;
Among the figure, 1, longeron; 2, sleeper beam; 3, concrete pillow; 4, fulcrum stake; 5, gear cap stake; 6, the horizontal beam group of lifting; 7, track; 8, pre-buried rail; 9, frame bridge; 10, just beam of worker; 11, outer cover plate; 12, inner cover plate; 13, web.
The specific embodiment
Below in conjunction with accompanying drawing structure of the present invention is explained in detail explanation, the specific embodiment is that a kind of railway is maked somebody a mere figurehead fastening devices, is track strengthening floor map of the present invention such as Fig. 2, comprise longeron 1 and sleeper beam 2, longeron by a plurality of workers just beam 10 connect by the junction plate equal strength.Just be worker's girder construction schematic diagram of the present invention such as Fig. 4-6; Junction plate is by web 13, and outer cover plate 11 and inner cover plate 12 form, just fixedly cover between worker's beam, as Fig. 7 be worker of the present invention just beam connect into the longeron schematic diagram, by bolt with the worker just beam be connected to one.Wear track 7 under the sleeper beam and be parallel to concrete pillow 3, top, sleeper beam two ends is fixedly connected with respectively a perpendicular longeron, and the longeron below is fixed with the fulcrum stake 4 of brace summer body.Longeron one side is fixed with gear cap stake 5 in parallel, is cross section of the present invention and jacking schematic diagram such as Fig. 1.Gear cap stake and the fulcrum stake top corresponding with its position have wears for vertical time and the horizontal beam group 6 of lifting of support stringer.The stake of described gear cap, top are stepped gear cap, and a horizontal end of lifting the beam group withstands on the sidewall of gear cap.Gear cap stake with horizontal lift the beam group by pre-buried rail 8 be fixedly connected with.Track is fixedly connected with by fastener with sleeper beam.Fastener and track contact position are lined with nylon insulation angle.
Adopt the built on stilts fastening devices of railway to increase the method for building the railway bridges and culverts, comprise the steps:
1) fulcrum stake and gear cap pile driving construction; The scope of determining hardened link is to determine according to the flange of rail to the height of framework bottom and the gradient of stable side slope.Be track strengthening floor map of the present invention such as Fig. 2, in the built on stilts fastening devices of railway longeron yet to be built below, and the fixing horizontal beam group position of lifting that is used for that is parallel to longeron one side, fulcrum quantity is by calculating, the combined circuit actual conditions determines position of the fulcrum, and borehole is also built steel concrete formation fulcrum stake and the stake of gear cap.In the situation that many track circuits are parallel or staggered, can determine according to the distance between the track circuit quantity of fulcrum stake, the longeron fulcrum adopts the fulcrum stake, the plane layout of fulcrum stake will be according to the length of the width of frame bridge and the circuit that needs reinforcement, the span of comprehensive longeron and horizontally lift the stressing conditions of beam group and determine.The stake footpath of fulcrum stake and length will be determined according to the height of geological condition and framework.
Determine the scope of hardened link, framework is wide+both sides stable side slope length, and stable side slope length=framework is high * the slope ratio.Stable side slope determines according to geologic information, when the ground bearing capacity when 120Kpa is above, press 1:1 and set, bearing capacity of foundation soil press the 1:1.5 setting below 120Kpa, when 80Kpa is above, bearing capacity of foundation soil is pressed the 1:2 setting when 80Kpa is following.Pilespacing is adjusted between 6.5m-9.5m, and principle is to consider horizontal ability to bear of lifting beam, also will consider economic factor, to guarantee that safety is as main.Stake footpath generally is not less than 120cm, when the stake exposure height when 12m is above, calculate through inspection and determine.Stake is long, and ordinary circumstance is not less than 3 meters with framework bottom to the stake end, when substrate soil property bearing capacity is poor, calculates through inspection and determine.The stake top mark is high,, has horizontal stake of lifting beam to push up from horizontal and lifts 20cm under the beam from the following 55cm of the flange of rail without horizontal stake top of lifting the beam group.Pile wall can be used the cast-in-situ steel reinforced concrete retaining wall, also available concrete reinforced pipe open caisson; Pile body adopts the above concreting of C20 level.In the built on stilts fastening devices of railway longeron yet to be built below, and the fixing horizontal beam group position of lifting that is used for that is parallel to longeron one side, by the good fulcrum of calculative determination, borehole is also built steel concrete and is formed fulcrum stake and the stake of gear cap.
2) wear sleeper beam; Adopt the standard sleeper beam to wear track from the concrete pillow is aerial under vertical, the circuit limiting operation, utilize the train travel gap, penetrate sleeper beam by wearing one principle every six, wear one of a tamping, when penetrating sleeper beam, wherein have under the track to be encased inside the insulation rubber cushion, prevent the track circuit short circuit, affect signal and driving.Be the built on stilts vertical section of circuit of the present invention schematic diagram such as Fig. 3, the long 4940mm of sleeper beam, every concrete sky is worn one, adopts Φ 22 high-strength bolts to connect mutually with longeron, in order to stop the generation of track circuit connection electrification, at sleeper beam and rail contact position the thick neoprene insulation rubber cushion of 20mm is set.
3) set up longeron; Longeron is installed, track blockade, electrified circuit has a power failure; The lifting longeron is in place, and every a slice longeron in place connects at least first two sleeper beams, the stable rear longeron junction plate of installing, and the rubber cushion that insulate on the track underlay connects all sleeper beams, first-class fastener.With the worker just erection be fixedly connected into longeron at top, sleeper beam two ends by junction plate.Worker just beam has the plurality of specifications model: I115 type worker is just beam, X38 case beam etc. of beam, I100 type worker just, according to different line conditions, require to select according to track clearance, and when distance between centers of tracks is limited, available X38 molding box beam; The worker just waits strong the connection between the beam.The setting of longeron length will be according to works construct span and engineering geology situation, to satisfy the prerequisite that stabilizes to of side slope.Worker just beam adopts 8,12,16 meters different lengths, take 12 meters long as main assembled, can be 36 meters, 48 meters, 60 meters etc.As Fig. 7 be worker of the present invention just beam connect into the longeron schematic diagram, be that the I115 type worker beam of Q345B bridge steel consists of just longeron adopts material.Deck-molding 1150mm, deck-siding 380mm, longeron adopt the equal strength connection methods to be linked to be the large span longeron on 12 meters small-sized just beams of fixing modulus, the worker just the junction plate between the beam by 2 blocks of webs, 2 up and down outer cover plate and 4 up and down inner cover plate form.Adopt material 40B, Φ 22 high-strength bolts connect mutually with longeron, and bolt hole is Φ 24.
4) longeron and sleeper beam connect; Be fixedly connected with sleeper beam and longeron with high-strength bolt; The standard sleeper beam is delivered to longeron with load of roadway, the sleeper beam two ends respectively with about two longeron lower wing plates connect with high-strength bolt; Connect and adopt Φ 22 bolts, material 40B, bolt hole are Φ 24.
5) fastener for installing; Track and sleeper beam are fixed as one control circuit direction, nylon insulation angle on fastener and rail contact position pad by fastener.
6) penetrate the horizontal beam group of lifting; Horizontal lifting worn longeron and be fixed on the fulcrum stake and gear cap stake top under the beam group, finish circuit built on stilts fixing, the horizontal beam group of lifting is comprised of large-scale i iron, is located at fulcrum stake top and framework top, and the horizontal beam group of lifting is fixedly connected with by pre-buried rail with crown fulcrum stake.The horizontal beam of lifting is according to fulcrum span, line conditions, and inspection is calculated and definite shaped steel and quantity and length that adopts different model through mechanics.The horizontal Liang Zushi that lifts is installed, and circuit all just after the beam control, utilizes headway time interval that horizontal railway roadbed and the roadbed of lifting beam group position dug through by the worker, when having train to pass through, sets up interim fulcrum with short sleeper in advance, and supporting track guarantees that train smooth passes through; When the frame bridge jacking to approach horizontal lift beam group termination after, begin to penetrate the horizontal beam group of lifting, and fill up the rubber cushion that is not less than 20cm at place, stake top.
7) excavation roadbed, simultaneously frame bridge 9 jackings are that cross section of the present invention and jacking schematic diagram and Fig. 3 are the built on stilts vertical section of circuit of the present invention schematic diagram such as Fig. 1.
8) when the frame bridge front end arrived at first row fulcrum stake limit, frame bridge bore the horizontal load of lifting the beam group, and all horizontal beams of lifting all ride on the framework, coaster is set under the beam or rolls bar horizontal lifting, then fulcrum stake upper padding plate is removed, with fulcrum stake unloading, and the first row fulcrum stake of removing.
9) continue the shoveling jacking, when the frame bridge front end arrives at second row fulcrum stake limit, repeating step 8) process, until frame bridge is in place.
Technique scheme has only embodied the optimal technical scheme of technical solution of the present invention, and some changes that those skilled in the art may make some part have wherein all embodied the principle of invention, belong within protection scope of the present invention.
Claims (9)
1. a railway is maked somebody a mere figurehead fastening devices, described device comprises longeron (1) and sleeper beam (2), wear track (7) under the sleeper beam and be parallel to concrete pillow (3), it is characterized in that, top, sleeper beam two ends is fixedly connected with respectively a perpendicular longeron, and the longeron below is fixed with the fulcrum stake (4) of brace summer body.
2. the built on stilts fastening devices of railway according to claim 1 is characterized in that, longeron one side is fixed with gear cap stake (5) in parallel, and gear cap stake and the fulcrum stake top corresponding with its position have vertically descends to wear and the horizontal beam group (6) of lifting of support stringer.
3. the built on stilts fastening devices of railway according to claim 2 is characterized in that, the stake of described gear cap, and the top is stepped gear cap, a horizontal end of lifting the beam group withstands on the sidewall of gear cap.
4. the built on stilts fastening devices of railway according to claim 3 is characterized in that, the stake of gear cap with horizontal lift the beam group by pre-buried rail (8) be fixedly connected with.
5. the built on stilts fastening devices of railway according to claim 1 is characterized in that, described longeron by a plurality of workers just beam (10) connect by the junction plate equal strength.
6. the built on stilts fastening devices of railway according to claim 5 is characterized in that, junction plate is by web (13), and outer cover plate (11) and inner cover plate (12) composition fixedly cover the worker just between the beam, by bolt with the worker just beam be connected to one.
7. the built on stilts fastening devices of railway according to claim 1 is characterized in that, track is fixedly connected with by fastener with sleeper beam.
8. the built on stilts fastening devices of railway according to claim 7 is characterized in that, fastener and track contact position are lined with nylon insulation angle.
9. one kind is adopted the built on stilts fastening devices of claim 1 railway to increase the method for building the railway bridges and culverts, it is characterized in that, it comprises the steps:
1) fulcrum stake and gear cap pile driving construction, in the built on stilts fastening devices of railway longeron yet to be built below, fulcrum is determined in and the fixing horizontal beam group position of lifting that is used for that is parallel to longeron one side, borehole is also built steel concrete and is formed fulcrum stake and the stake of gear cap;
2) wear sleeper beam, sleeper beam is worn track from concrete pillow is aerial under vertical;
3) set up longeron, with the worker just erection be fixedly connected into longeron at top, sleeper beam two ends by junction plate;
4) longeron and sleeper beam fixed connection;
5) fastener for installing is fixed as one track and sleeper beam by fastener;
6) penetrate the horizontal beam group of lifting, horizontal lifting worn longeron and be fixed on the fulcrum stake and gear cap stake top under the beam group, finish circuit built on stilts fixing;
7) excavation roadbed, simultaneously frame bridge (9) jacking;
8) when the frame bridge front end arrived at first row fulcrum stake limit, frame bridge bore the horizontal load of lifting the beam group, with fulcrum stake unloading, and the first row fulcrum stake of removing;
9) continue shoveling jacking, repeating step 8) process, until frame bridge is in place.
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| CN201210467428.8A CN102926299B (en) | 2012-11-19 | 2012-11-19 | Railway elevating and fixing device and railway bridge and culvert construction method adopting railway elevating and fixing device |
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| CN201210467428.8A CN102926299B (en) | 2012-11-19 | 2012-11-19 | Railway elevating and fixing device and railway bridge and culvert construction method adopting railway elevating and fixing device |
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