CN202936675U - Ballastless track pre-tensioned prestressed structure turnout plate - Google Patents
Ballastless track pre-tensioned prestressed structure turnout plate Download PDFInfo
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- CN202936675U CN202936675U CN 201220685136 CN201220685136U CN202936675U CN 202936675 U CN202936675 U CN 202936675U CN 201220685136 CN201220685136 CN 201220685136 CN 201220685136 U CN201220685136 U CN 201220685136U CN 202936675 U CN202936675 U CN 202936675U
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Abstract
The utility model discloses a ballastless track pre-tensioned prestressed structure turnout plate The ballastless track pre-tensioned prestressed structure turnout plate comprises a plate body which is formed by concrete and a steel reinforcement cage in a pouring mode. All rebar joints of the reinforcement cage are insulated. A plurality of sleeves which are used for installing a turnout steel rail are pre-embedded in the plate body. Crosswise arranged sleeves are evenly distributed on a corresponding rail support platform, wherein a central connecting line of the crosswise arranged sleeves is perpendicular to the turnout steel rail. The upper end face of the rail support platform protrudes out of the plate body so as to support a fastener system and the turnout steel rail. Due to the fact that a turnout plate is formed after a pretressed reinforcement bar is stretched out, concrete is poured, and maintenance is carried out, the ballastless track pre-tensioned prestressed structure turnout plate has the advantages of being quite beneficial to control of cracks caused by changes of environment temperatures, improving durability of the concrete, and being capable of prolonging a service life of the ballastless track pre-tensioned prestressed structure turnout plate.
Description
Technical field
The utility model relates to a kind of ballastless track structure, and especially this a kind of ballastless track structure is used for high-speed switch laying two dimension prestressing structure novel switching turnout plate.
Background technology
In recent years, non-fragment orbit had obtained applying in a big way in China, and the revenue kilometres of China Railway High-speed have reached 7531 kilometers, was the country that whole world high ferro operation mileage is the longest, building scale is maximum.Such as the objective operation line such as force is wide, Zheng Xi, Harbin-to-Dalian continue 350 kilometers of operation speed per hours.But, for the installation of baroque railroad turnout steel rail, still adopt traditional sleeper structure, formed non-fragment orbit, the difficult situation of tiny fragments of stone, coal, etc. track switch has been arranged.
Application number is: the Chinese invention patent of 201010618145.X " plate-type ballastless track switching turnout plate and manufacturing engineering method thereof " discloses a kind of plate-type ballastless track switching turnout plate, adopt reinforced concrete structure, with switching turnout plate without the tiny fragments of stone, coal, etc., thereby the characteristics that non-fragment orbit stability is high, maintenance load is little have been gathered, impact force, frictional force when having reduced operation, but because its concrete does not impose compressive stress in advance, easy strain cracking.
For fear of above-mentioned concrete strain cracking, usually adopt pre-tensioning system, two kinds of methods of post stretching to make switching turnout plate:
1, pre-tensioning system construction
Pre-tensioning system construction refers to after prestressed reinforcement of tensioning, the job practices of concreting again.
The key step of pre-tensioning system construction is as follows: at first before concreting at tensioned prestressing bar on pedestal or on punching block, and be temporarily fixed at the fixture presstressed reinforcing steel that stretch-draw is complete on the crossbeam of pedestal or on punching block; Then concreting, curing concrete loosens presstressed reinforcing steel to more than 80% of design strength grade.
The switching turnout plate that adopts the pre-tensioning system construction to make, bonded the pre-tensioned prestressing reinforcing bar in switching turnout plate inside by concrete, and the pre-tensioned prestressing reinforcing bar is in switching turnout plate not anchoring of end, its reason is: the switching turnout plate that the pre-tensioning system construction is made is stop the prestressed reinforcement elastic recoil and make concrete bear compressive pre-stress with the bonding force between prestressed reinforcement and concrete, just because of such process characteristic, after stretch-draw is completed, only need along the switching turnout plate end face, prestressed reinforcement to be cut concordant getting final product, need not anchoring separately.
Therefore, the switching turnout plate main weak point structurally that adopts the pre-tensioning system construction to make is: the prestressed reinforcement of switching turnout plate end exposes, and the concrete around it easily forms the capillary porosity and occurs loose.
Especially after these capillary porosity suctions, also can make prestressed reinforcement make moist corrosion, cause the concrete of switching turnout plate end and the compressive pre-stress between its inner prestressed reinforcement to reduce gradually, the concrete of switching turnout plate end is lost because of compressive pre-stress come off, therefore the switching turnout plate durability of this spline structure and reliability are not good.And such defective, adopting traditional mode poor effect of smearing rust preventive coating, its reason is that prestressed reinforcement can be subject to high-frequency vibration in the process of making and using, the rust preventive coating of smearing is easy to wear, and operation, maintenance cost are higher.
Separately, the switching turnout plate inside of adopting that the pre-tensioning system construction makes does not arrange structure reinforcing bars, is extremely irrational for the high tired structural member of life requirement.
2, post-tensioned construction
Post-tensioned construction refers to: after the concreting switching turnout plate is completed stripping process, then the job practices of prestressed reinforcement of tensioning.
The key step of post-tensioned construction is as follows:
A, build concrete members;
B, after concrete reaches desired strength, be supported on the concrete component end with jack, with no-cohesive prestressed reinforcement stretch-draw, make member compressed by counter-force;
C, to be tensioned after control pulling force namely is anchored in no-cohesive prestressed reinforcement on concrete component with the anchoring nut, and concrete obtains and keeps its compressive pre-stress;
The switching turnout plate that adopts post stretching to make, to rely on the anchoring nut transmission compressive pre-stress that is positioned at the prestressed reinforcement end when stretch-draw, the stress that the prestressed reinforcement end is subject to is very large, under the effect of high strength fatigue impact load, fragile and the fracture, cause prestressed reinforcement to eject, switching turnout plate deformation has a strong impact on train safe.
And post-tensioned construction needs to carry out separately respectively stretch-draw to each switching turnout plate, and work length consuming time, efficient are low.
Adopt switching turnout plate that post-tensioned construction makes structurally, be provided with the anchor recess hole in the end of switching turnout plate, in order to lay jack in stretching process, the hole internal diameter of anchor recess and the profile of stretch-draw jack are suitable.
The switching turnout plate that adopts post-tensioned construction to make structurally has the following disadvantages:
Need satisfy due to the anchor recess hole needs that jack is installed, therefore the size of anchor recess is usually larger, cause the gauge of the peripheral residual concrete in anchor recess hole less, in process of production with when operation under the effect of train high strength fatigue load, concrete easily ftractures, cause switching turnout plate damaged, had a strong impact on the application life of switching turnout plate.
Therefore, in the urgent need to the switching turnout plate of a kind of end concrete difficult drop-off, long service life.
The utility model content
The purpose of this utility model is to provide a kind of non-fragment orbit pre-tensioned prestressing structure switching turnout plate of long service life, more is embodied in: end concrete difficult drop-off, good endurance, structure are more stable.
The technical solution of the utility model is: a kind of non-fragment orbit pre-tensioned prestressing structure switching turnout plate, comprise by concrete and reinforcing cage and build the plate body that forms, all reinforcing bar node insulation of described reinforcing cage, be embedded with on described plate body for some sleeve pipes that track switch fastener system and rail are installed, the described line of centres all is located on corresponding track perpendicular to the horizontally-arranged sleeve pipe of railroad turnout steel rail, and described track upper surface protrudes from plate body to support track switch fastener system and rail; Be embedded with in described plate body that two rows first open the longitudinal prestressing reinforcing bar and two rows first open transverse prestressed reinforcing steel bar, the described longitudinal prestressing reinforcing bar two ends of first opening are connected to the vertical sideways vertical anchor recess of plate body hole, describedly first open the horizontal anchor recess hole that transverse prestressed reinforcing steel bar two ends are connected to the plate body transverse side, described two rows first open the longitudinal prestressing reinforcing bar and are arranged at described two rows and first open between transverse prestressed reinforcing steel bar.
Learn by the investigation of domestic and international project example, the ordinary concrete structure can occur obviously deteriorated at 30 years～50 years application life, the structure of the pre-tensioned prestressing reinforcing bar that the utility model adopts, namely after the prestressed reinforcement stretch-draw, then concreting, maintenance, switching turnout plate formed, the prestressing force of setting up is thus first opened switching turnout plate, very favourable to controlling the cracking that causes because of variation of ambient temperature, improved concrete durability, can extend the application life of switching turnout plate.
Compare with the mode that adopts pre-tensioning system to set up prestress system in switching turnout plate, because being connected in the anchor recess hole, the pre-tensioned prestressing reinforcing bar realizes later on anchoring, solved the problem of plate body end strength deficiency when only relying on bond stress between plate body and pre-tensioned prestressing reinforcing bar and being connected, set up prestress system in the mode of anchoring in the plate body end, increased the concrete intensity that is positioned at the plate body end, make the concrete difficult drop-off of plate body end, the application life of having improved plate body.
compare with the mode that adopts post stretching to set up prestress system in switching turnout plate, because need not to connect separately jack in the plate body end, the pre-tensioned prestressing reinforcing bar carries out stretch-draw, the anchor recess hole dimension of anchoring place need not with the size of jack end suitable, therefore, the size in anchor recess hole when the diameter in anchor recess hole and the degree of depth are constructed much smaller than existing posttension, thereby greatly increased the thickness of anchor recess hole surrounding concrete, concrete is not easy to crack, significantly increased application life, and before anchoring, both had bond stress between pre-tensioned prestressing reinforcing bar and concrete, the mechanical property of switching turnout plate is better.
Need to prove, the utility model with the direction of the railroad turnout steel rail installed on switching turnout plate be made as be also vertically the bearing of trend of track switch circuit for vertically, the direction vertical with rail is horizontal.Therefore, first opening the longitudinal prestressing reinforcing bar is namely the pre-tensioned prestressing reinforcing bar that extends longitudinally, and first opening transverse prestressed reinforcing steel bar is namely the pre-tensioned prestressing reinforcing bar that extends transversely.
Pre-tensioned prestressing reinforcing bar in the utility model is different from common prestressed reinforcement, the pre-tensioned prestressing reinforcing bar is the prestressed reinforcement that adopts pre-tensioning system to make, completed prestressed stretch-draw before the concreting of plate body, the concrete of plate body is formed by concreting at its first Zhang Yihou again, therefore the pre-tensioned prestressing reinforcing bar more abundant with concrete, be combined densely, have larger bond stress; Separately, difference due to bond stress between prestressed reinforcement and concrete, in the utility model, the restrictions such as the size of pre-tensioned prestressing reinforcing bar and anchor recess junction, connected mode are little, therefore, the anchor plate that can select size more to simplify, thereby further increased the thickness of anchor recess surrounding concrete, and improved its application life.
Preferably, the 2.5mm at least of the spacing of reinforcement of reinforcing cage described in described transverse prestressed reinforcing steel bar and described longitudinal prestressing reinforcing bar and plate body.For the reinforcing bar that prevents reinforcing cage described in described transverse prestressed reinforcing steel bar and described longitudinal prestressing reinforcing bar and plate body interferes.
Preferably, the vertical side of described plate body is provided with the originally concave structure of positioning action.This concave structure is convenient to when switching turnout plate is laid, it be carried out Primary Location.
Preferably, described plate body is provided with the lateral widening position, and the described position of widening is provided with the installing hole that goat is installed.
Need to prove, non-fragment orbit does not change with the track switch itself that the slag track is arranged, and contribution of the present utility model is the supporting body of track switch is designed to the bidirectional pre-tensioned prestressed structure switching turnout plate of non-fragment orbit.The difference of switching turnout plate and track plates is, because switching turnout plate is used for track switch is installed, the linear complexity of track switch is various, causes the switching turnout plate structure very complicated, and the sleeve pipe on switching turnout plate distributes and must change according to the variation of the linear trend of track switch.The supporting body of whole railroad turnout steel rail is exactly that some switching turnout plate head and the tail are connected to form in turn.
Preferably, in above-mentioned non-fragment orbit pre-tensioned prestressing structure switching turnout plate, the described longitudinal prestressing reinforcing bar of first opening is opened transverse prestressed reinforcing steel bar and all is connected with plate body by anchor plate with being connected, described anchor plate is provided with internal thread hole, the described end of first opening the end of longitudinal prestressing reinforcing bar and first opening transverse prestressed reinforcing steel bar is provided with external thread section, described first open the longitudinal prestressing reinforcing bar and first open transverse prestressed reinforcing steel bar all be threaded with anchor plate, described anchor plate is connected with the plate body cassette.
In the plate body that existing post-tensioned construction makes, anchor plate need bear whole stress of prestressed reinforcement stretch-draw, not only on syndeton, must adopt the higher connected mode of intensity, and the size in anchor recess hole must not be less than the head sizes of stretch-draw jack, size restrictions for anchor plate, anchor recess hole is higher, indirectly reduced anchor recess hole surrounding concrete thickness, affect application life of switching turnout plate.
the anchor plate that the utility model adopts is due to its function, and the difference of bond stress between prestressed reinforcement and concrete, it is mainly for locking, the ground tackle that stressed more traditional post stretching is made is little a lot, restriction for the syndeton of anchor plate is little, directly prestressed reinforcement is threadedly connected on the internal thread hole of anchor plate and has namely satisfied stressed demand, simultaneously, anchor plate is along first opening the longitudinal prestressing reinforcing bar, first open the radially protrusion of transverse prestressed reinforcing steel bar, form the boss shape mounting structure after building on plate body, putting the Zhang Yihou anchor plate bounces back together with the prestressed reinforcement end, and interfere with the boss shape mounting structure of plate body and pass through the anchor recess hole and be connected with the switching turnout plate cassette, need not to set up in addition locking nut, the card cone waits parts to lock, anchoring.In addition, also very little to the size restrictions of anchor plate, the size of anchor plate is less, more simplify.
Herein, most preferred, first open the longitudinal prestressing reinforcing bar and first open transverse prestressed reinforcing steel bar and all be threaded with the internal thread hole of anchor plate by prestressed reinforcement termination section screw thread.Adopt the connected mode of prestressed reinforcement termination section's screw thread and anchor plate, compare with the anchor plate that the posttension plate uses, the diameter of anchor recess has reduced more than 60% and the degree of depth in anchor recess hole has also reduced, and has saved encapsulant and connection is more firm.
As preferably, describedly first open the longitudinal prestressing reinforcing bar, and first open transverse prestressed reinforcing steel bar and all be packaged in plate body.
the end of prestressed reinforcement all is arranged on the inside of plate body, that is: first open the longitudinal prestressing reinforcing bar, and the outer end of first opening transverse prestressed reinforcing steel bar all is not exposed to the plate body outside, avoided first opening because of the switching turnout plate end capillary porosity that the longitudinal prestressing reinforcing steel bars exposed produces, cause the concrete that is positioned at the switching turnout plate end to come off, and slowed down the situation of prestressed reinforcement end corrosion, and then avoided the bond stress between prestressed reinforcement and plate body to reduce, prevented the vibratory process in manufacture process, and form hole between the dither environment lower prestress reinforcing bar in use procedure and plate body, thereby overall performance and the durability of switching turnout plate have been improved, increase the service life.
Need to prove: encapsulation herein, refer to that plate body will first open the longitudinal prestressing reinforcing bar, and first open transverse prestressed reinforcing steel bar and all be coated on wherein, and make first open the longitudinal prestressing reinforcing bar, and the end of first opening transverse prestressed reinforcing steel bar all be not exposed to the outside of plate body.
Preferably, describedly first open the longitudinal prestressing reinforcing bar and first open transverse prestressed reinforcing steel bar and pass reinforcing cage along the vertical and horizontal of plate body respectively.The mode that adopts prestressed structure to combine with non-prestressed structure, bulk strength and the shock resistance of switching turnout plate are more excellent.
Need to prove, in the cross-under process, if not prestressed reinforcement has stopped the layout of prestressed reinforcement, should shape, the position of nonprestressed reinforcement slightly be adjusted, with the cross-under of adaptive prestressed reinforcement.
Preferably, described anchor plate is cylindric, is provided with circular arc chamfering between the outer face of described anchor plate and the face of cylinder, and the diameter of described anchor plate is 25mm～33mm, and described circular arc chamfering radius is 3mm～8mm.
Adopt such structure, the situation such as can prevent further that stress from concentrating causes concrete cracks on switching turnout plate, comes off.
Technique effect of the present utility model is as follows:
1, adopt the pre-tensioned prestressing reinforcing bar to set up prestress system in switching turnout plate, improved the application life of switching turnout plate.Common switching turnout plate structure is under the effect of the factors such as thermal stresses, foundation settlement, and the concrete structure crack easily appears in switching turnout plate, even switching turnout plate fracture.And the utility model adopts bidirectional pre-tensioned prestressed structure, can well solve the problem of switching turnout plate self cracking.Simultaneously, owing to using the anchor plate anchoring between and plate body end reinforced at pre-tensioned prestressing, avoided to extend the application life of switching turnout plate because of first the opening capillary porosity that the longitudinal prestressing reinforcing steel bars exposed produces, cause the concrete that is positioned at the switching turnout plate end to come off of switching turnout plate end; In addition, because need not to connect separately jack in the end of switching turnout plate, the pre-tensioned prestressing reinforcing bar carries out stretch-draw, the ground tackle size of anchoring place need not with the size of jack end suitable, therefore, the diameter in anchor recess hole and the degree of depth are much smaller than the size that has anchor recess in the posttension plate now, thereby greatly increased the thickness of anchor recess hole surrounding concrete, concrete is not easy to crack, significantly increased application life; And owing between pre-tensioned prestressing reinforcing bar and concrete, bond stress being arranged, the mechanical property of switching turnout plate is better.
2, the purpose that prestressed reinforcement is set in existing plate body is that thermal stresses is worked, prevents concrete in tension stress and ftractures, and usually laterally only is provided with single transverse prestressed reinforcing steel bar along switching turnout plate; The utility model with two row first open the longitudinal prestressing reinforcing bar be arranged at two row first open between transverse prestressed reinforcing steel bar, the shock resistance of switching turnout plate under the thump condition of bearing the heavy and high frequency capacity of larger axis, and bulk strength significantly improve, thereby increased application life of switching turnout plate.
Description of drawings
The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the utility model non-fragment orbit pre-tensioned prestressing structure switching turnout plate structural representation;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is pre-tensioned prestressing reinforcement placement schematic cross-section in Fig. 1;
Fig. 4 is the top view of Fig. 3;
Fig. 5 is the schematic diagram of arranging of first opening the longitudinal prestressing reinforcing bar in Fig. 3, first opening transverse prestressed reinforcing steel bar;
Fig. 6 is the syndeton schematic diagram of pre-tensioned prestressing reinforcing bar and anchor plate in a kind of embodiment of the present utility model;
Fig. 7 is the structural representation of anchor plate in the utility model;
Fig. 8 be in the utility model switching turnout plate with first open longitudinal prestressing steel bar connecting structure schematic diagram;
Fig. 9 be in the utility model switching turnout plate with first open transverse prestressed reinforcing steel bar syndeton schematic diagram.
Reference numeral: 1 is plate body, and 2 is sleeve pipe, and 3 is track, and 4 is the mortar injection hole, and 5 for first opening the longitudinal prestressing reinforcing bar, and 6 for first opening transverse prestressed reinforcing steel bar, and 7 is vertical anchor recess hole, and 8 is horizontal anchor recess hole, and 9 is concave structure, and 10 is installing hole, and 11 is anchor plate; 11a is internal thread hole; 12 is external thread section.
The specific embodiment
Disclosed all features in this manual, or the step in disclosed all methods or process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this manual (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or similar characteristics.
As extremely shown in Figure 5 in Fig. 1, a kind of non-fragment orbit pre-tensioned prestressing structure switching turnout plate, comprise by concrete and reinforcing cage and build the plate body 1 that forms, all reinforcing bar node insulation of described reinforcing cage, described plate body 1 longitudinal middle part is provided with mortar injection hole 4, is embedded with some sleeve pipes 2 on described plate body 1, and described sleeve pipe 2 is used for installing track switch fastener system and rail, because the linear variation of track switch is various, thereby the position of sleeve pipe 2 on plate body 1 also can be along with variation.The described line of centres all is located on corresponding track 3 perpendicular to the horizontally-arranged sleeve pipe 2 of railroad turnout steel rail, is also that every horizontally-arranged sleeve pipe 2 all is arranged on corresponding track 3, and described track 3 upper surfaces protrude from plate body 1 to support track switch fastener system and rail.Be embedded with in described plate body 1 that two rows first open longitudinal prestressing reinforcing bar 5 and two rows first open transverse prestressed reinforcing steel bar 6, described longitudinal prestressing reinforcing bar 5 two ends of first opening are connected to plate body 1 vertical sideways vertical anchor recess hole 7, describedly first open the horizontal anchor recess hole 8 that transverse prestressed reinforcing steel bar 6 two ends are connected to plate body 1 transverse side, described two rows first open longitudinal prestressing reinforcing bar 5 and are arranged at described two rows and first open between transverse prestressed reinforcing steel bar 6.
Described transverse prestressed reinforcing steel bar 6 and the described spacing of reinforcement of first opening longitudinal prestressing steel 5 and reinforcing cage described in plate body 1 2.5mm at least that first opens.Be that prestressed reinforcement does not contact with the reinforcing bar of reinforcing cage.The vertical side of described plate body 1 is provided with the originally concave structure 9 of positioning action.The function of this concave structure is in the switching turnout plate laying a switch, switching turnout plate to be carried out just location.Described plate body 1 is provided with the lateral widening position, and the described position of widening is provided with the installing hole 10 that goat is installed.
be different from common prestressed reinforcement, first opening longitudinal prestressing reinforcing bar 5 and first opening transverse prestressed reinforcing steel bar 6 is all to complete prestressed stretch-draw before the concreting of plate body 1, to first open longitudinal prestressing reinforcing bar 5 and first open transverse prestressed reinforcing steel bar 6 and the anchor plate anchoring of plate body 1 by tensioning system, after the concreting of plate body 1 and completing concrete curing, first open longitudinal prestressing reinforcing bar 5 and first open transverse prestressed reinforcing steel bar 6 and combine closely with the concrete in plate body 1, because the concrete of plate body 1 is formerly open longitudinal prestressing reinforcing bar 5 and first open transverse prestressed reinforcing steel bar 6 and just build before putting and form, putting that Zhang Houxian opens longitudinal prestressing reinforcing bar 5 and first open the retraction trend of transverse prestressed reinforcing steel bar 6 can be more abundant with concrete, combination densely, thereby has larger bond stress.Put Zhang Yihou, first opening longitudinal prestressing reinforcing bar 5 ends is anchored in vertical anchor recess hole 7 by anchor plate, first opening transverse prestressed reinforcing steel bar 6 ends is anchored in horizontal anchor recess hole 8 by anchor plate, mode by the anchor plate anchoring, set up prestress system in plate body 1 end, significantly increased the concrete intensity that is positioned at plate body 1 end, improved the application life of plate body 1, and by non-fragment orbit switching turnout plate vertical and horizontal prestressed reinforcement structure, the application life of having improved switching turnout plate.
Need to prove along the track switch direction, 4 bar casing tubes 2 are arranged on plate body 1 in present embodiment, but along with the linear variation of track switch, the sleeve pipe 2 on plate body 1 changes to some extent along the row of track switch direction setting.Because the needs linear according to track switch are installed goat on switching turnout plate, therefore, switching turnout plate one end that has on whole track switch is equipped with goat, and goat all is equipped with at some switching turnout plates two ends, need not to install goat on some switching turnout plates.
as extremely shown in Figure 9 in Fig. 1, in the present embodiment in non-fragment orbit pre-tensioned prestressing structure switching turnout plate, first open longitudinal prestressing reinforcing bar 5 and first open transverse prestressed reinforcing steel bar 6 all by anchor plate 11 and plate body 1 anchoring, anchor plate 11 is cylindrical shape, the internal thread hole 11a that runs through along being axially arranged with of anchor plate 11, first open the end of longitudinal prestressing reinforcing bar 5 and first open on the end of transverse prestressed reinforcing steel bar 6 and be provided with external thread section 12, first open longitudinal prestressing reinforcing bar 5 and first open transverse prestressed reinforcing steel bar 6 and all be threaded with anchor plate 11, and the end face interference of anchor plate 11 and plate body 1, formerly open longitudinal prestressing reinforcing bar 5 or first open under the prestressing force screen resilience effect of transverse prestressed reinforcing steel bar 6, anchor plate 11 is connected with the end face cassette of plate body 1.Herein, first open and be positioned at vertical anchor recess hole 7 after anchor plate 11 anchorings at longitudinal prestressing reinforcing bar 5 two ends, the anchor plate 11 of first opening transverse prestressed reinforcing steel bar 6 two ends is positioned at later on horizontal anchor recess hole 8 in anchoring.
Need to prove, in all the other embodiments, first open longitudinal prestressing reinforcing bar 5, first open that also can to adopt the modes such as pin joint, welding to carry out between transverse prestressed reinforcing steel bar 6 and anchor plate 11 fastening, all can play similar effect.
For the ease of production, when making, first open longitudinal prestressing reinforcing bar 5, first open the coaxial connecting rod that is fixedly connected with in end of transverse prestressed reinforcing steel bar 6, the other end of connecting rod is fixedly connected with stretch-draw jack, be used as lengthening and be connected use with stretch-draw jack, need not during stretch-draw jack end is inserted in plate body 1, after connecting by connecting rod, the anchor recess hole dimension need not greater than the jack end size, thereby improves the intensity of plate body 1 end.
All the other structures see also embodiment 1.
As extremely shown in Figure 9 in Fig. 1, first opening longitudinal prestressing reinforcing bar 5, and first open transverse prestressed reinforcing steel bar 6 and all be packaged in plate body 1 in the present embodiment in non-fragment orbit pre-tensioned prestressing structure switching turnout plate, namely first open longitudinal prestressing reinforcing bar 5, and first open the inside that transverse prestressed reinforcing steel bar 6 is arranged on plate body 1, thereby avoid its end directly to be exposed to plate body 1 outside.Usually will first open longitudinal prestressing reinforcing bar 5, first open transverse prestressed reinforcing steel bar 6 and being coated in the lump in plate body 1 together with anchor plate 11 with the mode of sealing off and covering anchorage mortar end-blocking after the demoulding, thereby avoided first opening longitudinal prestressing reinforcing bar 5, and the end of first opening transverse prestressed reinforcing steel bar 6 directly contact with air, greatly slow down the situation of prestressed reinforcement end corrosion, thereby improved the switching turnout plate bulk life time.
In all the other embodiments, also can adopt remaining end-blocking mode, closed-end structure will first open longitudinal prestressing reinforcing bar 5, and first open transverse prestressed reinforcing steel bar 6 and outside atmosphere mutually isolated, and realize encapsulation.
All the other structures see also embodiment 2.
As extremely shown in Figure 9 in Fig. 1, reinforcing cage in the present embodiment in non-fragment orbit pre-tensioned prestressing structure switching turnout plate is formed by some nonprestressed reinforcement colligations, first open longitudinal prestressing reinforcing bar 5 and first open transverse prestressed reinforcing steel bar 6 respectively along the vertical and horizontal of plate body 1, pass reinforcing cage from the hole of reinforcing cage, prestressed structure and non-prestressed structure are organically combined, and bulk strength and the shock resistance of switching turnout plate are more excellent.
All the other structures see also embodiment 3.
as extremely shown in Figure 9 in Fig. 1, in the present embodiment non-fragment orbit pre-tensioned prestressing structure switching turnout plate, formerly open longitudinal prestressing reinforcing bar 5, the two ends of first opening transverse prestressed reinforcing steel bar 6 all respectively are provided with a cylindrical anchor plate 11, be provided with circular arc chamfering between the outer face of anchor plate 11 and the face of cylinder, circular arc chamfering is arranged at two ends that anchor plate 11 is adjacent, namely first open longitudinal prestressing reinforcing bar 5, first open on transverse prestressed reinforcing steel bar 6 two ends anchor plates 11 the circular arc chamfering place and all be arranged at the end that anchor plate 11 is connected with plate body 1 cassette, plate body 1 cavity shape and anchor plate 11 shapes are suitable, make anchor plate 11 rounded with the contact surface of the access section of plate body 1, reduced the situation that stress is concentrated, the diameter of anchor plate 11 is 29mm, the circular arc chamfering radius is 8mm.
All the other structures see also embodiment 4.
as extremely shown in Figure 9 in Fig. 1, in the present embodiment non-fragment orbit pre-tensioned prestressing structure switching turnout plate, formerly open longitudinal prestressing reinforcing bar 5, the two ends of first opening transverse prestressed reinforcing steel bar 6 all respectively are provided with a cylindrical anchor plate 11, be provided with circular arc chamfering between the outer face of anchor plate 11 and the face of cylinder, circular arc chamfering is arranged at two ends that anchor plate 11 is adjacent, namely first open longitudinal prestressing reinforcing bar 5, first open on transverse prestressed reinforcing steel bar 6 two ends anchor plates 11 the circular arc chamfering place and all be arranged at the end that anchor plate 11 is connected with plate body 1 cassette, plate body 1 cavity shape and anchor plate 11 shapes are suitable, make anchor plate 11 rounded with the contact surface of the access section of plate body 1, reduced the situation that stress is concentrated, the diameter of anchor plate 11 is 30mm, the circular arc chamfering radius is 5mm.
All the other structures see also embodiment 4.
Embodiment 7
as extremely shown in Figure 9 in Fig. 1, in the present embodiment non-fragment orbit pre-tensioned prestressing structure switching turnout plate, formerly open longitudinal prestressing reinforcing bar 5, the two ends of first opening transverse prestressed reinforcing steel bar 6 all respectively are provided with a cylindrical anchor plate 11, be provided with circular arc chamfering between the outer face of anchor plate 11 and the face of cylinder, circular arc chamfering is arranged at two ends that anchor plate 11 is adjacent, namely first open longitudinal prestressing reinforcing bar 5, first open on transverse prestressed reinforcing steel bar 6 two ends anchor plates 11 the circular arc chamfering place and all be arranged at the end that anchor plate 11 is connected with plate body 1 cassette, plate body 1 cavity shape and anchor plate 11 shapes are suitable, make anchor plate 11 rounded with the contact surface of the access section of plate body 1, reduced the situation that stress is concentrated, the diameter of anchor plate 11 is 30mm, the circular arc chamfering radius is 6mm.
All the other structures see also embodiment 4.
The utility model is not limited to the aforesaid specific embodiment.The utility model expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (8)
1. non-fragment orbit pre-tensioned prestressing structure switching turnout plate, comprise by concrete and reinforcing cage and build the plate body (1) that forms, all reinforcing bar node insulation of described reinforcing cage, it is characterized in that, be embedded with on described plate body (1) for some sleeve pipes (2) that railroad turnout steel rail is installed, the described line of centres all is located on corresponding track (3) perpendicular to the horizontally-arranged sleeve pipe (2) of railroad turnout steel rail, and described track (3) upper surface protrudes from plate body (1) to support track switch fastener system and rail; Being embedded with two rows in described plate body (1) first opens longitudinal prestressing reinforcing bar (5) and two and arranges and first to open transverse prestressed reinforcing steel bar (6), described longitudinal prestressing reinforcing bar (5) two ends of first opening are connected to plate body (1) vertical sideways vertical anchor recess hole (7), describedly first open the horizontal anchor recess hole (8) that transverse prestressed reinforcing steel bar (6) two ends are connected to plate body (1) transverse side, described two rows first open longitudinal prestressing reinforcing bar (5) and are arranged at described two rows and first open between transverse prestressed reinforcing steel bar (6).
2. non-fragment orbit pre-tensioned prestressing structure switching turnout plate according to claim 1, it is characterized in that described transverse prestressed reinforcing steel bar (6) and the described spacing of reinforcement of first opening reinforcing cage described in longitudinal prestressing reinforcing bar (5) and plate body (1) 2.5mm at least that first opens.
3. non-fragment orbit pre-tensioned prestressing structure switching turnout plate according to claim 2, is characterized in that, described plate body (1) vertically is provided with the originally concave structure of positioning action (9) in the side.
4. non-fragment orbit pre-tensioned prestressing structure switching turnout plate according to claim 3, is characterized in that, described plate body (1) is provided with the lateral widening position, and the described position of widening is provided with the installing hole (10) that goat is installed.
5. the described non-fragment orbit pre-tensioned prestressing of arbitrary claim structure switching turnout plate according to claim 1 to 4, it is characterized in that, the described longitudinal prestressing reinforcing bar (5) of first opening is opened transverse prestressed reinforcing steel bar (6) and all is connected with plate body (1) by anchor plate (11) with being connected, described anchor plate (11) is provided with internal thread hole (11a), the described end of first opening the end of longitudinal prestressing reinforcing bar (5) and first opening transverse prestressed reinforcing steel bar (6) is provided with external thread section (12), described first open longitudinal prestressing reinforcing bar (5) and first open transverse prestressed reinforcing steel bar (6) all be threaded with anchor plate (11), described anchor plate (11) is connected with plate body (1) cassette.
6. non-fragment orbit pre-tensioned prestressing structure switching turnout plate according to claim 5, is characterized in that, describedly first opens longitudinal prestressing reinforcing bar (5), and first opens transverse prestressed reinforcing steel bar (6) and all be packaged in plate body (1).
7. non-fragment orbit pre-tensioned prestressing structure switching turnout plate according to claim 5, is characterized in that, describedly first opens longitudinal prestressing reinforcing bar (5) and first open transverse prestressed reinforcing steel bar (6) and pass reinforcing cage along the vertical and horizontal of plate body (1) respectively.
8. non-fragment orbit pre-tensioned prestressing structure switching turnout plate according to claim 5, it is characterized in that, described anchor plate (11) is cylindric, be provided with circular arc chamfering between the outer face of described anchor plate (11) and the face of cylinder, the diameter of described anchor plate (11) is 25mm～33mm, and described circular arc chamfering radius is 3mm～8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220685136 CN202936675U (en) | 2012-12-12 | 2012-12-12 | Ballastless track pre-tensioned prestressed structure turnout plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220685136 CN202936675U (en) | 2012-12-12 | 2012-12-12 | Ballastless track pre-tensioned prestressed structure turnout plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202936675U true CN202936675U (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220685136 Expired - Lifetime CN202936675U (en) | 2012-12-12 | 2012-12-12 | Ballastless track pre-tensioned prestressed structure turnout plate |
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| Country | Link |
|---|---|
| CN (1) | CN202936675U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102995503A (en) * | 2012-12-12 | 2013-03-27 | 中铁二十三局集团有限公司 | Pre-tensioning prestressed structure turnout slab for ballastless track |
| CN105908705A (en) * | 2016-06-23 | 2016-08-31 | 上海市政工程设计研究总院（集团）有限公司 | Prefabricated pretensioned prestressed underground continuous wall and construction method thereof |
-
2012
- 2012-12-12 CN CN 201220685136 patent/CN202936675U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102995503A (en) * | 2012-12-12 | 2013-03-27 | 中铁二十三局集团有限公司 | Pre-tensioning prestressed structure turnout slab for ballastless track |
| CN102995503B (en) * | 2012-12-12 | 2016-01-20 | 中铁二十三局集团有限公司 | A kind of non-fragment orbit pre-tensioned prestressing structure switching turnout plate |
| CN105908705A (en) * | 2016-06-23 | 2016-08-31 | 上海市政工程设计研究总院（集团）有限公司 | Prefabricated pretensioned prestressed underground continuous wall and construction method thereof |
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Granted publication date: 20130515 |