CN103306169A - Slab end isolation mounting device for floating track bed - Google Patents

Abstract

The invention belongs to the field of vibration control and relates to a slab end isolation mounting device for supporting a floating slab in a floating track bed. The slab end isolation mounting device comprises a top slab, a bottom slab, an elastic element and a damping element, wherein the elastic element and the damping element are arranged between the top slab and the bottom slab. The slab end isolation mounting device is characterized in that the top slab is provided with a slab end horizontal limiting device; the slab end horizontal limiting device comprises a slab end transverse limiting device or/and a slab end lengthwise limiting device. The slab end isolation mounting device and a prefabricated short slab in the length of 1.2-8m form the structure of the floating track bed together, the prefabricated production and lifting construction of the floating slab are possible, and the prefabricated short slab is limited lengthwise and transversely through the slab end horizontal limiting device, so that the stability and safety of the structure of the floating track bed in the travelling process are guaranteed, the construction speed is greatly improved, the construction period is further shortened, the construction difficulty is reduced, and the production cost is saved. The isolation mounting device is high in practicability, safe, reliable and high in cost performance and has a wide market application prospect.

Description

Floating ballast bed plate end isolation mounting

Technical field

The invention belongs to the vibration isolation field, relate to the floating ballast bed isolation mounting of a kind of railway, specifically is a kind of plate end isolation mounting that be used for to support the plate of floating in floating ballast bed.

Background technology

Vibration and noise are people's influence surface of generally acknowledging the most a kind of public hazards, also are the difficult problems that needs to be resolved hurrily that track traffic in recent years development faces.In the noise reduction technology of existing track traffic, what application in practice was the most successful is the member livitation, be typically floating ballast bed technology, its vibration isolation efficiency height, stable work in work, become common recognition in the industry, for example the patent No. is that the Chinese patent of ZL200410035441.1 discloses typical built-in type floating track bed structure and corresponding isolation mounting.But existing floating ballast bed construction period is generally longer, and the standard plate length of floating is 25m, and the speed of all constructing in the tunnel the earliest can only realize that on average each working group finishes 5m every day; Then earthing, Shen, Shanghai Inland Steel and Qingdao every and solid company develops precast reinforced cage construction technology jointly, namely behind the good reinforcing cage of ground elder generation colligation again lifting enter the job practices of carrying out the concrete perfusion in the tunnel, the job schedule of each working group every day is brought up to about 30m.Because the reinforcing cage size is bigger, often need offer special passage in the tunnel during transportation in the tunnel, very inconvenient, in addition, though the reinforcing cage construction method has significantly improved construction speed, but still can not satisfy the requirement of engineering construction duration well, many subway vibration isolation location can't be satisfied to yield and uses floating ballast bed vibration isolation technique, the hidden danger that causes vibration to disturb residents because of the duration.The efficient job practices of some prefabricated forms is arranged at other field at present, for example generally adopted the prefabricate body of a bridge in the elevated bridge construction, the technical method of on-site hoisting construction has significantly improved speed of application then.But one of the plate of floating of traditional 25m length weighs more than 70 tons, and the supporting capacity of lifting vehicle has only 10 tons in the existing tunnel, differs too big, integral prefabricated can't the transportation; Even can transport, because narrow space in the tunnel, majority is the curve location, and prefabricated long slab is difficult to adapt to the polytropic curve key element, so the precast plate technology can't be used in the floating ballast bed engineering construction of this class multi-point support of steel spring floating slab always.Though there is the feasible scheme that the long plate of floating is changed into the short plate of floating in theory, but long slab is shortened the problem that plate will bring a series of kinetics, safety and installation aspect, for example, use existing elastic vibration isolation device, after plate length is shortened, can't satisfy float plate level position and stability requirement, in addition, train is too big through the out-of-date plate deflection of floating, rail is stressed excessive, also the seesaw effect can occur, have a strong impact on traveling security etc., so the technical scheme that the long plate of floating is shortened the plate of floating fails to use in engineering all the time.How further to improve speed of application, become the difficult problem in the industry that the floating ballast bed technology of restriction is further applied.

Summary of the invention

The objective of the invention is to overcome above-mentioned defective, provide a kind of spacing ability stronger, be suitable for utilizing prefabricated short slab to construct the floating ballast bed plate end isolation mounting of floating ballast bed structure jointly as the plate of floating.

The floating ballast bed plate end of the present invention isolation mounting is to realize like this, comprise top board, base plate, flexible member and damping element, flexible member and damping element are arranged between top board and the base plate, it is characterized in that arranging on the top board plate end level to stopping means, plate end level comprises plate end cross spacing device or/and plate end longitudinal spacing device to stopping means.

The structure of plate end cross spacing device and plate end longitudinal spacing device can be varied.For example, plate end cross spacing device can be the cross spacing projection that arranges on the top board; Plate end cross spacing device also can be made of cross spacing plate, adjusting bolt and lock nut; Plate end cross spacing device can also and transfer the crack pad to constitute by cross spacing plate, adjusting bolt.Plate end longitudinal spacing device can be made of longitudinal spacing plate, adjusting bolt and lock nut, or is made of longitudinal spacing plate, adjusting bolt and accent crack pad; Plate end longitudinal spacing device also can be the longitudinal spacing projection that arranges on the top board; Plate end longitudinal spacing device can also be made of longitudinal spacing spare and locking cushion block, comprises gathering sill on the longitudinal spacing spare, and the locking cushion block is arranged in the gathering sill.For easy to adjust, the locking cushion block is made up of at least two son locking cushion blocks, and according to actual needs, the thickness of different son locking cushion blocks can be identical, also can be different.In addition, in the floating ballast bed plate end of the present invention isolation mounting, inner horizontal can also be set to stopping means between top board and the base plate, preferred, inner horizontal becomes one to the damping element of stopping means and plate end isolation mounting.

When the floating ballast bed plate end of a present invention isolation mounting supports the end of two adjacent prefabricated short slabs simultaneously, in order to make the floating ballast bed plate end of the present invention isolation mounting the enabling capabilities of contiguous prefabricated short slab is realized basis equalization, flexible member and damping element are along the horizontal midship section symmetric arrangement of the floating ballast bed plate end of the present invention isolation mounting, that is to say that the quantity that the elasticity that guarantees every prefabricated short slab below does not as far as possible have part and damping element is identical.At this, the bearing of trend in slit is identical between the horizontal and contiguous prefabricated short slab of the floating ballast bed plate end of described the present invention isolation mounting.Flexible member in the floating ballast bed plate end of the present invention isolation mounting and the concrete form of damping element can be varied, and for example flexible member can be helical steel springs, dish spring, rubber spring, polyurethane spring, metal rubber and plastic complex spring or air spring; Damping element comprises viscous type damper, orifice restriction type damper or macromolecular material solid damping element, and wherein macromolecular material solid damping element specifically can be rubber high damping element or polyurethane high damping element etc.It is to be noted that especially flexible member and damping element also can become one, for example adopt the rubber spring of high resiliency, high damping, both used as flexible member, also use as damping element simultaneously.

For the purpose of safety, in the floating ballast bed plate end of the present invention isolation mounting the vertical stopping means of spring failure can also be set, after preventing the unexpected inefficacy of spring, the excessive major hidden danger of forming for the rail vehicle operation security of prefabricated short slab deflection, for guaranteeing to realize above-mentioned purpose, in general, the spacing stroke of the vertical stopping means of spring failure is less than 10mm.In the practical application, for simplified structure, reduce product cost, the damping element in the vertical stopping means of spring failure and the floating ballast bed plate end of the present invention isolation mounting can be become one.For example, damping element in the floating ballast bed plate end of the present invention isolation mounting is viscous shearing type damper or shearing-type macromolecular material solid damper, it is by damping material, plunger and damping urceolus constitute, fit clearance between fit clearance between the base plate of suitable control plunger and the floating ballast bed plate end of the present invention isolation mounting or the top board of damping urceolus and the floating ballast bed plate end of the present invention isolation mounting, make fit clearance satisfy stroke less than the technical requirements of 10mm, namely can realize the damping element of the vertical stopping means of spring failure and the floating ballast bed plate end of the present invention isolation mounting is become one.

Linkage can be set between the present invention's floating ballast bed plate end isolation mounting and basis to prevent the floating ballast bed plate end of the present invention isolation mounting play take place in use, the structure of linkage is varied, for example linkage specifically can be that the corresponding stone bolt that arranges is gone up on connecting through hole and the basis that arranges on the floating ballast bed plate end of the present invention isolation mounting base plate, utilize stone bolt can realize the floating ballast bed plate end of the present invention isolation mounting is fixed on the basis by connecting through hole, certainly based on this principle, linkage also can be that the corresponding alignment pin that arranges is gone up on the connecting through hole and the basis that arrange on the base plate, utilizes alignment pin to cooperate with connecting through hole and realizes the floating ballast bed plate end of the present invention isolation mounting is fixed on the basis; Linkage also can be between the floating ballast bed plate end of the present invention isolation mounting base plate and basis mechanical brakeman to be set; Linkage can also be the base plate bottom surface arrange to the outstanding positioning convex of basic direction, positioning convex can be the concrete forms such as pyramidal spine that utilize spot welding to pile.

When using the floating ballast bed plate end of the present invention isolation mounting, preferably, cooperate as the plate of floating with the prefabricated short slab that along the rail longitudinal length is 1.2～8m and to construct floating ballast bed structure, prefabricated short slab arranges the floating ballast bed plate end of the present invention isolation mounting in below, plate body end longitudinally along rail, every end arranges two at least, the floating ballast bed plate end of the present invention isolation mounting is arranged between prefabricated short slab and the basis, and is symmetrical in vertical midship section setting of prefabricated short slab, utilizes shear hinge to link to each other between the prefabricated short slab.When using the present invention's floating ballast bed plate end isolation mounting and elastic vibration isolation device simultaneously, preferred, the vertical stiffness of the floating ballast bed plate end of a present invention isolation mounting is 1.5～5 times of an elastic vibration isolation device vertical stiffness.This be because, for same prefabricated short slab end largest amount of subsidence permissible value, the strong point is more outer just more saves flexible member, is conducive to reduce cost, this vertical stiffness distribution technique heterogeneous can play a multiplier effect, economy is better.For the ease of adjusting the working depth of prefabricated short slab, the top board surface of the floating ballast bed plate end of the present invention isolation mounting can also arrange height adjusting cushion plate, height adjusting cushion plate is arranged between the present invention's floating ballast bed plate end isolation mounting and the prefabricated short slab, by adjusting the thickness of height adjusting cushion plate, realize heightening and leveling of prefabricated short slab.When prefabricated short slab is supported jointly by the present invention's floating ballast bed plate end isolation mounting and elastic vibration isolation device, not only need to adjust the thickness of height adjusting cushion plate between the present invention's floating ballast bed plate end isolation mounting and the prefabricated short slab, also want to heighten the thickness of pad between the prefabricated short slab of corresponding adjustment and the elastic vibration isolation device, and then could realize heightening and leveling of prefabricated short slab fully.For compensate for clearance, avoid the damage and prevent from noise from can between the stopping means cushion pad being set at prefabricated short slab and plate end level.In addition, adjust and eliminate the gap for convenience, prefabricated short slab and plate end level are transferred the crack backing plate to arranging between the stopping means.

Be noted that especially, the implication of " level to " described in the present invention is not to refer to traditional horizontal direction, but refer in particular to the residing in-plane of two one steel rail treads of same circuit, this plane does not overlap with traditional horizontal direction under given conditions, for example, when the curved section of track, itself and traditional horizontal direction just present certain included angle.In addition, utilize prefabricated short slab as floating plate among the present invention, therefore utilize prefabricated short slab to substitute the plate of floating sometimes and describe.

The floating ballast bed plate end of the present invention isolation mounting by plate end level is set to stopping means at end face, has been controlled horizontal level and the stability of prefabricated short slab effectively.Using the floating ballast bed plate end of the present invention isolation mounting can be with the external force reasonable distribution between adjacent prefabricated short slab such as vertical brake force, vertical load and lateral force in the use, and realized the optimization of isolation mounting position, quantity, under the prerequisite of the not obvious raising of isolation mounting cost, assurance is floated the largest amount of subsidence of plate and isolation mounting in permissible range, eliminate the seesaw effect simultaneously, guaranteed traffic safety.

Compared with prior art, the floating ballast bed plate end of the present invention isolation mounting can be achieved as follows advantage:

(1) the plate length of floating of Shi Yonging foreshortens to 1.2～8m from traditional 25m, make the prefabricated production of the plate of floating become possibility, thoroughly solve the limited and not enough problem of lifting device carrying of present tunnel space, transportation and lifting are all very convenient quick, have solved the difficult problem of accommodation curve section curve element, have saved the maintenance stand-by period, difficulty of processing reduces greatly, the easier assurance of product quality has improved production efficiency greatly, and the production cycle significantly shortens;

(2) below adjacent prefabricated short slab plate end, the floating ballast bed plate end of the present invention isolation mounting is set, improved local supporting capacity on the one hand, overcome the prefabricated short slab of monolithic tradition floated that weight lightens behind the plate contraction in length, the other end was easy to generate and turns over the harmful effect of sticking up when vehicle entered from an end, had limited the distortion of rail; On the other hand, the plate end level that arranges on the floating ballast bed plate end of the present invention isolation mounting can also effectively limit rocking of prefabricated short slab in the vehicle operating process, under the floating state to stopping means, therefore can guarantee traveling security, stability and comfortableness;

(3) experiment of examination shop shows, utilize the present invention's floating ballast bed plate end isolation mounting and prefabricated short slab to construct floating ballast bed speed of application and can realize that each working group finishes more than the 75m every day in the tunnel, efficiency of construction has obtained greatly promoting, and estimates that ground or elevated line speed of application can reach more than the 120m;

(4) the floating ballast bed plate end of the present invention isolation mounting is arranged on the plate end of prefabricated short slab, for identical plate end largest amount of subsidence permissible value, the plate end that isolation mounting is arranged prefabricated short slab plate body be arranged on other positions of plate body and compare, the load-carrying properties of isolation mounting are brought into play more fully, required flexible member is minimum, stability is also better, and cost performance is higher.

In sum, the floating ballast bed plate end of the present invention isolation mounting can realize that with length be that the prefabricated short slab of 1.2～8m is constructed floating ballast bed structure jointly, make prefabricated production and the type hoisting construction of the plate of floating become possibility, by plate end level has realized vertical and cross spacing from prefabricated short slab to stopping means is set, thereby ensured stability and the safety when driving of floating ballast bed structure, improved speed of application greatly, be conducive to the further reduction of erection time, reduce difficulty of construction, save production cost.The floating ballast bed plate end of the present invention isolation mounting is practical, safe and reliable, and cost performance is higher, and market application foreground is very wide.

Description of drawings

Fig. 1 is the structural representation of the floating ballast bed plate end of the present invention isolation mounting among the embodiment one.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is the structural representation of prefabricated short slab among the embodiment one.

Fig. 4 is the application schematic diagram of the floating ballast bed plate end of the present invention shown in Figure 1 isolation mounting.

Fig. 5 is the C portion enlarged drawing of Fig. 4.

Fig. 6 is the A-A sectional view of Fig. 4.

Fig. 7 is the B-B sectional view of Fig. 4.

Fig. 8 is the structural representation of the floating ballast bed plate end of the present invention isolation mounting among the embodiment two.

Fig. 9 is the vertical view of Fig. 8.

Figure 10 is the application schematic diagram of the floating ballast bed plate end of the present invention shown in Figure 8 isolation mounting.

Figure 11 is the structural representation of prefabricated short slab among the embodiment two.

Figure 12 is the D portion enlarged drawing of Figure 10.

Figure 13 is the E-E sectional view of Figure 10.

Figure 14 is the structural representation of the floating ballast bed plate end of the present invention isolation mounting among the embodiment three.

Figure 15 is the vertical view of Figure 14.

Figure 16 is the application schematic diagram of the floating ballast bed plate end of the present invention shown in Figure 14 isolation mounting.

Figure 17 is not for comprising the structural representation of the floating ballast bed plate end of the present invention isolation mounting of plate end longitudinal spacing device among the embodiment four.

Figure 18 is that the F of Figure 17 is to view.

Figure 19 is the structural representation of longitudinal spacing spare among the embodiment four.

Figure 20 is the structural representation of locking cushion block among the embodiment four.

Figure 21 is the structural representation of the floating ballast bed plate end of the present invention isolation mounting behind the assembled plate end longitudinal spacing device among the embodiment four.

Figure 22 is the application schematic diagram of the floating ballast bed plate end of the present invention shown in Figure 21 isolation mounting.

Figure 23 is the G portion enlarged drawing of Figure 22.

Figure 24 is the structural representation of the floating ballast bed plate end of the present invention isolation mounting among the embodiment five.

Figure 25 is the vertical view of Figure 24.

Figure 26 is the structural representation of prefabricated short slab among the embodiment five.

Figure 27 is the application schematic diagram of the floating ballast bed plate end of the present invention shown in Figure 24 isolation mounting.

Figure 28 is the H portion enlarged drawing of Figure 27.

Figure 29 is that the J of Figure 27 is to view.

Figure 30 is the structural representation of the floating ballast bed plate end of the present invention isolation mounting among the embodiment six.

Figure 31 is the structural representation of the floating ballast bed plate end of the present invention isolation mounting among the embodiment seven.

Figure 32 is the vertical view of Figure 31.

Figure 33 is the structural representation of prefabricated short slab among the embodiment seven.

Figure 34 is one of application schematic diagram of the floating ballast bed plate end of the present invention shown in Figure 31 isolation mounting.

Figure 35 be the floating ballast bed plate end of the present invention shown in Figure 31 isolation mounting the application schematic diagram two.

Figure 36 is the K portion enlarged drawing of Figure 34.

Figure 37 is the structural representation of the floating ballast bed plate end of the present invention isolation mounting among the embodiment eight.

Figure 38 is the vertical view of Figure 37.

Figure 39 is the structural representation of prefabricated short slab among the embodiment eight.

Figure 40 is the left view of Figure 39.

Figure 41 is the application schematic diagram of the floating ballast bed plate end of the present invention shown in Figure 37 isolation mounting.

Figure 42 is the L portion enlarged drawing of Figure 41.

Figure 43 is the M-M sectional view of Figure 42.

Figure 44 is the structural representation of the floating ballast bed plate end of the present invention isolation mounting among the embodiment nine.

Figure 45 is the application schematic diagram of the floating ballast bed plate end of the present invention shown in Figure 44 isolation mounting.

Figure 46 is the structural representation of prefabricated short slab among the embodiment nine.

Figure 47 is the left view of Figure 46.

Figure 48 is the vertical view of Figure 44.

Figure 49 is the N portion enlarged drawing of Figure 45.

Figure 50 is the structural representation of the floating ballast bed plate end of the present invention isolation mounting among the embodiment ten.

Figure 51 is the upward view of Figure 50.

Figure 52 is the application schematic diagram of the floating ballast bed plate end of the present invention shown in Figure 50 isolation mounting.

Figure 53 is the structural representation of prefabricated short slab among the embodiment ten.

Figure 54 is the P portion enlarged drawing of Figure 52.

Figure 55 is the structural representation of the floating ballast bed plate end of the present invention isolation mounting among the embodiment 11 and uses schematic diagram.

Figure 56 is that the Q of Fig. 1 is to view.

The specific embodiment

Embodiment one

The floating ballast bed plate end of the present invention isolation mounting as depicted in figs. 1 and 2, comprise top board 10, base plate 11, flexible member 12 and damping element 13, flexible member 12 and damping element 13 are arranged between top board 10 and the base plate 11, flexible member 12 is specially eight helical steel springs in this example, damping element 13 is specially orifice restriction type damper, and flexible member 12 and damping element 13 are along the horizontal midship section symmetric arrangement of floating ballast bed plate end isolation mounting.In addition, plate end level also is set to stopping means on the top board 10, plate end level is made up of plate end cross spacing device and plate end longitudinal spacing device to stopping means.Wherein, plate end cross spacing device is the fixing cross spacing projection 14 of welding on the top board 10, and plate end longitudinal spacing device is the fixing longitudinal spacing projection 15 of welding on the top board 10.

Cooperate with the prefabricated short slab of structure shown in Figure 3 with the floating ballast bed plate end of aforementioned the present invention isolation mounting below that to construct novel floating ballast bed structure be that example describes in detail application of the present invention.As shown in Figure 3, prefabricated short slab length is 3.57m, integrated setting has anchoring piece 9 on the prefabricated short slab, in addition, also be provided with four on the every prefabricated short slab and reserve through hole 8, prefabricated short slab arranges the installation gap 60 of the floating ballast bed plate end of the present invention isolation mounting in the plate body end longitudinally along rail, and prefabricated short slab is provided for placing the preformed groove 61 of the floating ballast bed plate end of the present invention isolation mounting in below, plate body end longitudinally along rail.The another one effect that preformed groove 61 is set is, on short transverse for plate end isolation mounting provides one to allow bit space, in order to avoid that prefabricated short slab breaks away from the height on basis is excessive, influence stability.Accordingly, the side elevation 80 that gap 60 places are installed in the cross spacing projection 14 corresponding prefabricated short slabs in the floating ballast bed plate end of the present invention isolation mounting arranges, and the side elevation 81 of prefabricated short slab end arranges in longitudinal spacing projection 15 corresponding diagram 3.Shown in Fig. 4 and Figure 56, utilize the floating ballast bed of the present invention shown in Figure 1 floating ballast bed plate end isolation mounting and prefabricated short slab formation shown in Figure 3, for convenience of explanation, be 1,2 and 3 with prefabricated short slab number consecutively.In the floating ballast bed structure, rail 17 is fixed on the prefabricated short slab by the rail fastening (not shown), wherein, as shown in Figure 7, built-in vibration-isolating device 5 comprises integrated setting joint sheeve 22 on reservation through hole 8 inwalls of elastic vibration isolation device 25 and prefabricated short slab, elastic vibration isolation device 25 is bearing on the support stop 23 that fixedly installs in the joint sheeve 22 by heightening pad 24, thereby realizing being built in the prefabricated short slab and to prefabricated short slab gives elastomeric bearing.In addition, the vertical stiffness of a floating ballast bed plate end isolation mounting 6 is 1.5 times of elastic vibration isolation device 25 vertical stiffnesses.

Being applied between prefabricated short slab 1 and 2 with the floating ballast bed plate end of the present invention isolation mounting is example, shown in Fig. 5, Fig. 6 and Figure 56, during application, floating ballast bed plate end isolation mounting is supporting the adjacent panel end of prefabricated short slab 1 and 2 simultaneously, cross spacing projection 14 in the floating ballast bed plate end isolation mounting is kept off respectively on the side elevation 80 that leans against prefabricated short slab 1 and 2 ends installation opening position, and the longitudinal spacing projection 15 in the floating ballast bed plate end isolation mounting is kept off on the side elevation 81 that leans against prefabricated short slab 1 and 2 ends respectively.The gap that the panel vibration of floating during for compensation work produces, avoid damage simultaneously and prevent noise, between the side elevation 80 of cross spacing projection 14 and prefabricated short slab 1 and 2 cushion pad 18 that elastomeric material is made is set, between the side elevation 81 of longitudinal spacing projection 15 and prefabricated short slab 1 and 2 cushion pad 19 that elastomeric material is made is set.Can be clearly seen that from Fig. 5 and Figure 56, each floating ballast bed plate end isolation mounting is supporting two adjacent prefabricated short slabs simultaneously, this also be requirement flexible member 12 and damping element 13 along the reason of the horizontal midship section symmetric arrangement of floating ballast bed plate end isolation mounting, exactly may be consistent in order to guarantee that elastomeric bearing to every prefabricated short slab overcomes.Floating ballast bed plate end isolation mounting is arranged between prefabricated short slab and the basis 21, each end of prefabricated short slab arranges two, two floating ballast bed plate end isolation mountings are symmetrical arranged along vertical midship section of prefabricated short slab, and each floating ballast bed plate end isolation mounting supports two adjacent prefabricated short slabs simultaneously, floating ballast bed plate end isolation mounting is arranged in the preformed groove 61 of prefabricated short slab 2 ends, in order to prevent that floating ballast bed plate end isolation mounting from play in use taking place, after the location finishes, utilize stone bolt 20 by the connecting through hole 16 that arranges on the base plate 11 floating ballast bed plate end isolation mounting and basis 21 to be fixed together, the plan-position of every prefabricated short slab direction has all around obtained determining by plate end isolation mounting like this, and this location can not influence vibration isolating effect by the flexible member realization.Adjust the working depth of prefabricated short slab for convenience, between the top board 10 of floating ballast bed plate end isolation mounting and prefabricated short slab, also be provided with for the height adjusting cushion plate 7 of adjusting height.Like this, the prefabricated short slab of each piece is supported jointly by four elastic vibration isolation device 25 and four floating ballast bed plate end isolation mountings 6 that are positioned under the plate that are built in the plate body respectively, thereby leave basic 21 surfaces, form floating struction, heighten the thickness of pad 24 and height adjusting cushion plate 7 by adjustment and can realize heightening of prefabricated short slab and leveling, link to each other by shear hinge 4 again between adjacent prefabricated short slab, shear hinge 4 is fastened on respectively on the anchoring piece 9 of contiguous prefabricated short slab, can produce relative slippage along self axis direction between the two-part structure of shear hinge, and realize between the contiguous prefabricated short slab in horizontal and vertical power transmission, and then constitute floating ballast bed.During maintenance floating ballast bed plate end isolation mounting 6, can realize taking out or the floating ballast bed plate end isolation mounting 6 of packing into by gap 60 is installed by instruments such as jack, do not need to dismantle rail in the process, therefore utilize the skylight time of rail vehicle operation just can finish, very convenient.Illustrate that a bit, rail does not specifically illustrate among Figure 56.

Based on above-mentioned know-why, the floating ballast bed plate end of the present invention isolation mounting goes for length at the prefabricated short slab of 1.2～8m scope, by the floating ballast bed plate end of the present invention isolation mounting is set between contiguous prefabricated short slab, utilize plate end level to realize the vertical and cross spacing of prefabricated short slab to stopping means, utilize shear hinge to realize vertical connection and power transmission between the prefabricated short slab again, thereby ensured stability and the safety when driving of floating ballast bed structure.The application of the floating ballast bed plate end of the present invention isolation mounting makes prefabricated short slab use as the plate of floating becomes possibility, and then type hoisting construction in the prefabricated production of the plate of having realized floating and the tunnel, improved speed of application greatly, be conducive to the further reduction of erection time, reduce difficulty of construction, save production cost.In summary, the floating ballast bed plate end of the present invention isolation mounting is practical, safe and reliable, and cost performance is higher, and market application foreground is very wide.

In this routine technical scheme is described, be helical steel springs with flexible member 12, damping element 13 is that example describes for the shearing damper of viscous, in actual applications, the concrete form of flexible member and damping element can be varied, and for example flexible member can be other steel springs, rubber spring, rubber-metal complex spring, polyurethane spring or air springs etc. such as dish spring; Damping element can be viscous type damper or orifice restriction type damper, can also be macromolecular material solid damping element, for example damping element that directly is made of solid damping materials such as high-damping rubber or high-damping polyurethanes.It is to be noted that especially flexible member and damping element also can become one, for example adopt the rubber spring of high resiliency, high damping, namely use as flexible member, also use as damping element simultaneously.As long as can satisfy the needs of vibration isolation, can be applied among the present invention.In addition, for the ease of implementing Height Adjustment, height adjusting cushion plate 7 also polylith can be set, and thickness also can be different with to heighten pad 24 the same.

In this example, utilize stone bolt 20 by the connecting through hole 16 that arranges on the base plate 11 the floating ballast bed plate end of the present invention isolation mounting and basis 21 to be fixed together, in actual applications, also can utilize the connecting through hole and the basic alignment pin cooperation of corresponding setting that arrange on the base plate that the two is fixed together, also can play same effect, accompanying drawing is described no longer in addition.

This example is that 1.5 times of an elastic vibration isolation device vertical stiffness are that example describes with the vertical stiffness of a floating ballast bed plate end isolation mounting only, in the actual application, according to the condition difference that engineering is used, the vertical stiffness of a floating ballast bed plate end vibration isolator can be 1.5～5 times of an elastic vibration isolation device vertical stiffness.This be because, for same prefabricated short slab end largest amount of subsidence permissible value, on the one hand, the more outer flexible member of just more saving of the strong point, on the other hand, the more big flexible member of also more saving of the vertical stiffness of outermost flexible member, be conducive to reduce cost, this vertical stiffness distribution technique heterogeneous, can play a multiplier effect, economy is better, therefore can be optimized as required in engineering design process, and this point is equally applicable to of the present invention other and adopts the technical scheme of floating ballast bed plate end isolation mounting and elastic vibration isolation device simultaneously.

Embodiment two

As Fig. 8 and the floating ballast bed plate end of the present invention shown in Figure 9 isolation mounting, be with the difference of embodiment one, floating ballast bed plate end isolation mounting arranges two groups of plate end longitudinal spacing devices altogether, every group of plate end longitudinal spacing device is made of longitudinal spacing plate 33, adjusting bolt 35 and locking nut 34, regulate bolt 35 and run through gripper shoe 36 settings, gripper shoe 36 is weldingly fixed on cross spacing projection 14 and top board 10.

Prefabricated short slab is that with the difference of prefabricated short slab shown in Figure 3 every prefabricated short slab is provided with four resettlement grooves 27 that cooperate with the elastic vibration isolation device, is symmetrically arranged with the shear hinge 31 of two middle-set-types on the end face of this external prefabricated short slab as shown in figure 11.

Be described below in conjunction with the application of prefabricated short slab shown in Figure 11 to the floating ballast bed plate end of this routine described the present invention isolation mounting.As Figure 10 and shown in Figure 13, for convenience of explanation, be 28,29 and 30 with prefabricated short slab number consecutively, every prefabricated short slab is united by four elastic vibration isolation devices 25 and four the floating ballast bed plate end of the present invention isolation mountings 32 and is given resiliency supported, adjacent prefabricated short slab is realized vertically connecting by middle-set-type shear hinge 31 again, and then is spliced into floating ballast bed.Wherein, elastic vibration isolation device 25 sides and are supporting prefabricated short slab by height adjusting cushion plate 39 in the resettlement groove 27 of prefabricated short slab.In addition, the vertical stiffness of a floating ballast bed plate end isolation mounting 32 is 3 times of elastic vibration isolation device 25 vertical stiffnesses.Specifically with the example that is applied as between prefabricated short slab 28 and 29, as shown in figure 12, the floating ballast bed plate end of the present invention isolation mounting is supported on the adjacent end portion of prefabricated short slab 28 and 29 simultaneously, cross spacing projection 14 in the floating ballast bed plate end isolation mounting is supported on respectively on the side elevation 80 that gap 60 places are installed in prefabricated short slab 28 and 29, between the side elevation 80 of cross spacing projection 14 and prefabricated short slab 28 and 29 cushion pad 38 that elastane is made is set, longitudinal spacing plate 33 in two groups of plate end longitudinal spacing devices is supported on respectively on the side elevation 82 that gap 60 places are installed in prefabricated short slab 28 and 29, and the cushion pad 37 that elastane is made is set between longitudinal spacing plate 33 and the side elevation 82.

In this routine described technical scheme, because the plate end longitudinal spacing device of the floating ballast bed plate end of the present invention isolation mounting has the adjustable advantage in position, therefore can reduce the requirement to floating ballast bed plate end isolation mounting putting position precision, putting error longitudinally on a small quantity along prefabricated short slab can revise by adjusting adjusting bolt 35, recycling locking nut 34 latched positions, more convenient and practical.Be noted that, plate end longitudinal spacing device utilizes the longitudinal spacing plate except this example is described, regulates the bolt and lock nut formation, also can utilize the longitudinal spacing plate, regulate bolt and transfer the crack pad to constitute, after adjustment adjusting bolt holds out against side elevation 82, between gripper shoe and longitudinal spacing plate, embed and transfer the crack pad, thereby with locking position, also can realize same effect.Owing to be common technology, at this no longer extra accompanying drawing, only be described with literal, also in protection scope of the present invention.

In addition, this example is that 3 times of an elastic vibration isolation device vertical stiffness are that example describes with the vertical stiffness of a floating ballast bed plate end isolation mounting only, in the actual application, condition difference according to the engineering application, the vertical stiffness of a floating ballast bed plate end vibration isolator can be 1.5～5 times of an elastic vibration isolation device vertical stiffness, this point is equally applicable to of the present invention other and adopts the technical scheme of floating ballast bed plate end isolation mounting and elastic vibration isolation device simultaneously, no longer repeats in following examples.

Embodiment three

Based on embodiment two described know-whies, as Figure 14 and the floating ballast bed plate end of the present invention shown in Figure 15 isolation mounting, be with the difference of embodiment two, floating ballast bed plate end isolation mounting is except arranging two groups respectively by longitudinal spacing plate 33 in this example, regulate outside the plate end longitudinal spacing device of bolt 35 and locking nut 34 formations, also arrange two groups respectively by cross spacing plate 40, regulate the plate end cross spacing device that bolt 42 and locking nut 41 constitute, wherein, adjusting bolt 42 in the plate end cross spacing device runs through gripper shoe 43 and arranges, and gripper shoe 43 is welded respectively with top board 10 and gripper shoe 36 and is fixed together.

Using the floating ballast bed plate end of this routine described the present invention isolation mounting substitutes floating ballast bed plate end isolation mounting 32 among Figure 10 and constructs when floating ballast bed, as shown in figure 16, floating ballast bed plate end isolation mounting is supported on the adjacent end portion of prefabricated short slab 28 and 29 simultaneously, cross spacing plate 40 on the floating ballast bed plate end isolation mounting in two groups of plate end cross spacing devices keeps off respectively on the side elevation 80 that leans against prefabricated short slab 28 and 29, and the cushion pad 38 that the flexible foaming material is made is set between the side elevation 80 of cross spacing plate 40 and prefabricated short slab 28 and 29; Longitudinal spacing plate 33 in two groups of plate end longitudinal spacing devices keeps off respectively and leaning against on the side elevation 82 that gap 60 places are installed in prefabricated short slab 28 and 29, and the cushion pad 37 that the flexible foaming material is made is set between longitudinal spacing plate 33 and the side elevation 82.

In this routine described technical scheme, because plate end longitudinal spacing device and plate end cross spacing device in the floating ballast bed plate end of the present invention isolation mounting all can carry out the position adjustment, lower to the position accuracy demand of floating ballast bed plate end isolation mounting when therefore using, installation is more convenient.Particularly because the independent setting respectively of the plate end longitudinal spacing device of corresponding different prefabricated short slabs and plate end cross spacing device, therefore under the situations such as bend, contiguous prefabricated short slab is in a certain angle when putting, and can realize the spacing adjustment of the difference of adjacent two prefabricated short slabs, and is very convenient.Based on the principle described in the embodiment two, in the technical scheme of this routine described type, plate end cross spacing device also can utilize the cross spacing plate, regulates bolt and transfer the crack pad to constitute, and also can realize same technique effect, all in protection scope of the present invention.

Embodiment four

As Figure 17, Figure 18, Figure 19 and the floating ballast bed plate end of the present invention shown in Figure 20 isolation mounting, be with the difference of embodiment one, the bottom of cross spacing projection 14 is provided with two gap 44 in the floating ballast bed plate end isolation mounting, in addition, in order to prevent in the use with between the basis relative slippage taking place, a plurality of positioning convex 45 are set on the bottom surface of base plate 11, and positioning convex 45 is the pyramidal spines that utilize spot welding to pile in this example.In addition, the plate end longitudinal spacing device in the floating ballast bed plate end isolation mounting is made up of longitudinal spacing spare 46 and locking cushion block 49, comprises gathering sill 47 and longitudinal spacing plate 48 in the longitudinal spacing piece spare 46, and locking cushion block 49 can be inserted in the gathering sill 47.Side from cross spacing projection 14, along gap 44 longitudinal spacing spare 46 and cross spacing projection 14 are assembled together, cross spacing projection 14 parts are embedded in the gathering sill 47, utilize locking cushion block 49 fillings of two different-thickness in the gathering sill 47 between longitudinal spacing plate 48 and the cross spacing projection 14, constitute complete floating ballast bed plate end isolation mounting 50, specifically as shown in figure 21.

As Figure 22 and shown in Figure 23, the floating ballast bed plate end of this routine described the present invention isolation mounting 50 cooperates with prefabricated short slab shown in Figure 3 to be constructed when floating ballast bed, cooperating with prefabricated short slab 1 and 2 with floating ballast bed plate end isolation mounting 50 is example, floating ballast bed plate end isolation mounting 50 is placed the plate end below of contiguous prefabricated short slab 1 and 2, cross spacing projection 14 in the floating ballast bed plate end isolation mounting 50 is supported on respectively on the side elevation 80 of prefabricated short slab 1 and 2, between the side elevation 80 of cross spacing projection 14 and prefabricated short slab 1 and 2 cushion pad 52 that elastomeric material is made is set respectively also; The longitudinal spacing spare 46 of mobile cross spacing projection 14 both sides, longitudinal spacing plate 48 in the both sides longitudinal spacing spare 46 is supported on respectively on the side elevation 82 of prefabricated short slab 1 and 2, the cushion pad 51 that elastomeric material is made is set between the side elevation 82 of longitudinal spacing spare 46 and prefabricated short slab 1 and 2, to lock in the gathering sill 47 of cushion block 49 close packed between longitudinal spacing plate 48 and cross spacing projection 14 holding state of locking longitudinal spacing spare 46 again.In addition, the vertical stiffness of a floating ballast bed plate end isolation mounting 50 is 5 times of elasticity vibration isolator (not specifically illustrating among Figure 22) vertical stiffness in the built-in vibration-isolating device 5.

Floating ballast bed plate end isolation mounting 50 has adopted the plate end longitudinal spacing device of being made up of longitudinal spacing spare 46 and locking cushion block 49 in this example, therefore putting error longitudinally on a small quantity along prefabricated short slab can revise by adjusting longitudinal spacing spare 46, the holding state of 49 pairs of longitudinal spacing spares 46 of locking cushion block of recycling appropriate size locks, both convenient and practical, safe and reliable again.It is pointed out that reply is adjusted for convenience, the locking cushion block can be made up of two or more son locking cushion blocks at least, is combined into the locking cushion block of suitable thickness so according to actual needs, and is very convenient.Owing on the bottom surface of base plate 11 a plurality of positioning convex 45 are set in the floating ballast bed plate end isolation mounting 50, can effectively prevent from the use with between the basis relative slippage taking place, therefore need not that stone bolt is set again between floating ballast bed plate end isolation mounting and the basis fixes, the size of base plate 11 also can suitably reduce, structure is simpler, also more is conducive to save material.Certainly, except base plate 11 arranges positioning convex 45, also can adopt and between floating ballast bed plate end isolation mounting base plate and basis, additive methods such as mechanical brakeman are set and prevent relative slippage, if can achieve effective control floating ballast bed plate end isolation mounting and the basis between relatively move, can play identical effect.Be noted that especially, in the described floating ballast bed plate end isolation mounting 50 of this example, owing to be provided with two gap 44 in the bottom of cross spacing projection 14, therefore in heightening the leveling process, as long as make the height adjusting cushion plate that adopts satisfy monolithic thickness less than the condition of gap height, just can realize adorning the operation of getting height adjusting cushion plate (not specifically illustrating among the figure) by gap 44, needn't all plate end isolation mounting be taken out under prefabricated short slab at every turn, more convenient to operate.

Embodiment five

As Figure 24 and the floating ballast bed plate end of the present invention shown in Figure 25 isolation mounting, be that with the difference of embodiment one longitudinal spacing projection 15 no longer is arranged on top board 10 middle parts, and be arranged on a side of top board 10.In addition, flexible member 12 is specially four helical steel springs in this example.In addition, for the purpose of safety, also set up the vertical stopping means of spring failure in the floating ballast bed plate end isolation mounting, the vertical stopping means of spring failure is specially four root beads and connects the steel pipe 63 that is fixed on the base plate 11, under prefabricated short slab deadweight effect, steel pipe 63 tops are spacing stroke to the gap of top board 10 soffits, and this spacing stroke is 5mm.

Adopt the prefabricated short slab of structure shown in Figure 26 as floating plate, prefabricated short slab length is 1.2m, integrated setting has anchoring piece 9 on the prefabricated short slab, because the plate body of prefabricated short slab is very short, for guaranteeing the intensity of plate body, the reservation through hole is not set on the prefabricated short slab, and being used with the described floating ballast bed plate end isolation mounting of this example and prefabricated short slab shown in Figure 25 below is that example describes.As Figure 27, Figure 28 and shown in Figure 29, during application, floating ballast bed plate end isolation mounting is supporting prefabricated short slab 1, cross spacing projection 14 in the floating ballast bed plate end isolation mounting is supported on the side elevation 80 that gap 60 places are installed in the prefabricated short slab 1, and longitudinal spacing projection 15 is supported on the side elevation 81 of prefabricated short slab 1 end.The gap that prefabricated short slab vibration produces during for compensation work, avoid damage simultaneously and prevent noise, between the side elevation 80 in cross spacing projection 14 and the prefabricated short slab 1 cushion pad 18 that elastomeric material is made is set, between the side elevation 81 in longitudinal spacing projection 15 and the prefabricated short slab 1 cushion pad 19 that elastomeric material is made is set.The prefabricated short slab of each piece is by four floating ballast bed plate end isolation mounting elastomeric bearings, by adjusting the gross thickness of height adjusting cushion plate 7 between each floating ballast bed plate end isolation mounting and prefabricated short slab, can realize heightening and leveling of prefabricated short slab, the recycling shear hinge links together prefabricated short slab, namely constitutes floating ballast bed.Illustrate that a bit, rail does not specifically illustrate among Figure 29.

Need to prove, because each floating ballast bed plate end isolation mounting only supporting a prefabricated short slab, therefore the layout of flexible member 12 and damping element 13 also no longer needs to follow requirement along the horizontal midship section symmetric arrangement of floating ballast bed plate end isolation mounting in the floating ballast bed plate end isolation mounting.

This example is that example describes with the long prefabricated short slab of 1.2m as the plate of floating, and in general, the following prefabricated short slab of 2m all can only utilize the floating ballast bed plate end of the present invention isolation mounting to support, and needn't be equipped with the elastic vibration isolation device in addition.The prefabricated short slab plate of this structure is long shorter, weight is lighter, send defeated and conveyance convenient, and because the elastic vibration isolation device is not set, plate body structure is simpler, be easy to processing, be conducive to reduce cost, in addition, owing to only utilize floating ballast bed plate end isolation mounting to support, only prefabricated short slab is heightened with leveling get final product by adjusting height adjusting cushion plate thickness, so it is simpler to heighten the leveling process, is conducive to further improve speed of application.In addition, in this routine described technical scheme, owing in floating ballast bed plate end isolation mounting, set up four steel pipes 63 as the vertical stopping means of spring failure, when spring generation fracture waits fortuitous event, prefabricated short slab sinks, because the existence of the vertical stopping means of spring failure, prefabricated short slab can only sink down into the apical support of steel pipe 63 till top board 10 soffits, therefore can effectively improve the safety of operation.According to this principle, the concrete form of the vertical stopping means of spring failure can carry out diversified amplification, and for example steel pipe 63 also can be weldingly fixed on the soffit of top board 10.In addition, the vertical stopping means of spring failure can also utilize rod iron, steel plate etc. to make except utilizing steel pipe makes, and also can realize same function.In addition, be that 5mm is that example describes with the spacing stroke between steel pipe 63 tops and top board 10 soffits in this example, in the practical application, can set spacing stroke according to safety requirements, according to the track traffic associated safety standard of China, in general, this spacing stroke should be less than 10mm.

Be noted that in this routine described technical scheme that the plate end level that is arranged in two the floating ballast bed plate end of the present invention isolation mountings of the same end of prefabricated short slab is to stopping means and is symmetrical arranged, and should note when processing and putting.

Embodiment six

Know-why based on embodiment one and embodiment five, the floating ballast bed plate end of the present invention isolation mounting as shown in figure 30, be with the difference of embodiment one, set up the vertical stopping means of spring failure in the floating ballast bed plate end isolation mounting, the vertical stopping means of spring failure is specially four root beads and connects the steel pipe 63 that is fixed on the base plate 11, steel pipe 63 tops are spacing stroke to the gap of top board 10 soffits, and this spacing stroke is 5mm.Identical among the set-up mode of steel pipe 63 and the embodiment five, at this no longer other description of drawings.

Application process and the embodiment one of the described floating ballast bed plate end isolation mounting of this example are identical, no longer are repeated in this description at this.Compare with the technical scheme of embodiment five, because the described floating ballast bed plate end isolation mounting of this example can support the plate end of adjacent two prefabricated short slabs simultaneously, therefore the quantity of the floating ballast bed plate end isolation mounting 6 that adopts still less, whole ballast bed structure is simpler, be conducive to further reduce construction link, improve efficiency of construction.

Embodiment seven

As Figure 31 and the floating ballast bed plate end of the present invention shown in Figure 32 isolation mounting, be with the difference of embodiment one, damping element in the floating ballast bed plate end isolation mounting is the viscous shearing type damper, the viscous shearing type damper specifically is made of fluid damping material 66, plunger 64 and damping urceolus 65, wherein plunger 64 is connected with top board 10 welderings, and damping urceolus 65 is connected with base plate 11 welderings.It is to be noted, this viscous shearing type damper also has the effect of the vertical stopping means of spring failure simultaneously, under the prefabricated short slab deadweight effect, fit clearance between damping urceolus 65 and top board 10 soffits namely constitutes described spacing stroke, guarantee that this spacing stroke is less than 10mm, in the time of just can effectively preventing unexpected generation the such as disconnected spring, the harm that prefabricated short slab excessive convergence causes traffic safety; In addition, utilize plunger 64 and damping urceolus 65 to cooperatively interact, also constituted inner horizontal in the floating ballast bed plate end isolation mounting to stopping means, because plunger 64 and damping urceolus 65 are connected with top board 10 and base plate 11 respectively, base plate 11 is fixed on the basis by stone bolt 20, top board 11 leans against on the side elevation of prefabricated short slab plate end to the stopping means retaining by plate end level, therefore when prefabricated short slab occurred level displacement, can drive top board 10 and plunger 64 relatively moves with base plate 11 and damping urceolus 65, when horizontal movement is enough big, plunger 64 can abut in damping urceolus 65, and then the further generation of limit levels displacement, thereby the level that plays is to spacing effect.

During application, according to the actual conditions difference of using, the form of structure of the prefabricated short slab that the floating ballast bed plate end of the present invention isolation mounting is suitable for can be varied, the position of corresponding floating ballast bed plate end isolation mounting is also different, for example, under the situation that outer space allows, floating ballast bed plate end isolation mounting also can be adorned from the outside of prefabricated short slab and get.Floating ballast bed as shown in figure 34, adopt the prefabricated short slab of structure shown in Figure 33, four preformed grooves 61 that are used for the floating ballast bed plate end isolation mounting of assembling only are set on the prefabricated short slab.Describe with the example that is applied as of floating ballast bed plate end isolation mounting between prefabricated short slab 1 and 2, floating ballast bed plate end isolation mounting 6 is supporting the plate end of adjacent two prefabricated short slabs 1 and 2 simultaneously, cross spacing projection 14 on the floating ballast bed plate end isolation mounting 6 is kept off on the side elevation 80 that leans against prefabricated short slab 1 and 2 ends respectively, between cross spacing projection 14 and the side elevation 80 cushion pad 18 that the flexible foaming material is made is set, longitudinal spacing projection 15 in the floating ballast bed plate end isolation mounting is kept off respectively on the side elevation 81 that leans against prefabricated short slab 1 and 2 plate ends, between longitudinal spacing projection and the side elevation 81 cushion pad 19 that the flexible foaming material is made is set.Recycling shear hinge 4 links together prefabricated short slab, constitutes floating ballast bed.

Owing to be provided with inner horizontal that plate end level that cross spacing projection 14 and longitudinal spacing projection 15 constitute constitutes to stopping means and plunger 64 and damping urceolus 65 in the floating ballast bed plate end isolation mounting 6 that adopts simultaneously to stopping means, therefore better to limit effect to the level of prefabricated short slab, in addition, simultaneously be integrated in damping element to stopping means the vertical stopping means of spring failure and inner horizontal, namely can effectively improve the prefabricated of the present invention safety of plate railway roadbed in using of floating, do not increase the structural complexity of floating ballast bed plate end isolation mounting again, be conducive to save the space, very economical and practical.Certainly, based on this routine described know-why, the concrete structure of the vertical stopping means of spring failure also can change to some extent, for example can utilize fit clearance between the base plate of plunger and floating ballast bed plate end isolation mounting as spacing stroke, control this spacing stroke less than 10mm, also can play identical effect.

In addition, be noted that, in the floating ballast bed structure that the floating ballast bed plate end of the present invention isolation mounting constitutes, in order to improve local globality, prevent that stressed the transfiniting of indivedual floating ballast bed plate end isolation mountings causes damaging under specific conditions such as brake hard, in the connection procedure of prefabricated short slab, a plurality of plate groups of floating can be set in whole floating ballast bed structure, floating arranges the shrinkage joint between the plate group.For example, as shown in figure 35, prefabricated short slab 67a, the prefabricated short slab of polyliths such as 67b is by the longitudinal spacing projection 15 as plate end longitudinal spacing device, cushion pad 19 and shear hinge 4 are linked to be one along the vertical gapless plate group of floating of rail, equally, prefabricated short slab 68a, 68b, the prefabricated short slab of polylith such as 68c and 68d is by being linked to be another along the vertical gapless plate group of floating of rail as the longitudinal spacing of plate end longitudinal spacing device projection 15 and cushion pad 19 and shear hinge 4, prefabricated short slab 69a, the prefabricated short slab of polyliths such as 69b is next along the vertical gapless plate group of floating of rail by being linked to be as the longitudinal spacing of plate end longitudinal spacing device projection 15 and cushion pad 19 and shear hinge 4, adjacent floating is provided with shrinkage joint 70 between the plate group, the adjacent plate group of floating in 70 places only links to each other and power transmission by shear hinge 4 at the shrinkage joint.The floating ballast bed plate end of the present invention isolation mounting that is arranged in the place, shrinkage joint only arranges plate end cross spacing device.Like this, a plurality of plate groups of floating link to each other successively, and then constitute whole floating ballast bed.Thisly utilize floating ballast bed that a plurality of plate groups of floating combine, namely have good continuity and globality, has stronger local autonomy again, the whole relatively railway roadbed of each plate group of floating is again an independently individuality, when special circumstances such as train generation brake hard, the train place floating ballast bed plate end isolation mounting that plate group and even the adjacent plate group of floating comprise of floating carries jointly, utilize the shrinkage joint to bear the displacement of prefabricated short slab because expanding with heat and contract with cold and producing, the setting of the plate group of therefore floating has improved local globality again conversely, make each the floating ballast bed plate end isolation mounting in the plate group of floating stressed roughly the same, avoid single floating ballast bed plate end isolation mounting excessively to carry damage.In general, the length of the plate group of floating can be controlled about 10～40m, and certainly, according to the difference of environment for use, the plate group of floating length can change to some extent, and for example in subway tunnel, the length of the plate group of floating can suitably lengthen, such as surpassing 50m; On ground or overhead highway section, the length of the plate group of floating can suitably be lacked, such as being lower than 20m.Preferably, the length of the plate group of floating is identical with the length of a row railcar or slightly long, by present train length, generally about 25m.Generally about 25m.It is to be noted, the know-why that this utilization is floated the plate group and then constituted whole railway roadbed equally also is applicable to the described technical scheme of other embodiment among the present invention, comprise the scheme that floating ballast bed plate end isolation mounting and elastic vibration isolation device are set simultaneously, describe in the lump at this, no longer be repeated in this description.Illustrate that a bit, rail does not specifically illustrate among Figure 35.

Embodiment eight

As Figure 37 and the floating ballast bed plate end of the present invention shown in Figure 38 isolation mounting, be with the difference of embodiment seven, damping element in the floating ballast bed plate end isolation mounting is shearing-type macromolecular material solid damper, and shearing-type macromolecular material solid damper specifically is made of plunger 64, damping urceolus 65 and the high-damping rubber layer 72 of sulfuration between the two.In order to prevent that play takes place floating ballast bed plate end isolation mounting 6 in the use, base plate 11 soffits of floating ballast bed plate end isolation mounting 6 also utilize built-up welding that a plurality of positioning convex 45 are set.It is to be noted, the function of inner horizontal to stopping means and the vertical stopping means of spring failure that shearing-type macromolecular material solid damper in the floating ballast bed plate end isolation mounting 6 is same integrated, show, utilize fit clearance between plunger 64 and the base plate 11 as spacing stroke, as long as this spacing stroke of control just can be realized the predetermined function of the vertical stopping means of spring failure less than 10mm; And the high-damping rubber layer 72 attainable horizontal decrement that arrange between plunger 64 and the damping urceolus 65 are very limited, based among the embodiment seven to inner horizontal to the explanation of stopping means action principle as can be known, plunger 64, high-damping rubber layer 72 and damping urceolus 65 can realize limiting the function of the relative basic occurred level displacement of prefabricated short slab to a certain extent, so this shearing-type macromolecular material solid damper can also realize that inner horizontal is to the function of stopping means simultaneously.In addition, according to using needs, longitudinal spacing projection 15 is only in a side setting of cross spacing projection 14.

Be applied to as Figure 41, Figure 42 and shown in Figure 43 when floating ballast bed, for the ease of seeing square structure down clearly, clipped the part rail among Figure 41, be with the difference of embodiment seven, adopt the prefabricated short slab of Figure 39 and structure shown in Figure 40, prefabricated short slab one end arranges installs gap 60, the other end arranges bulge-structure, the bulge-structure of a prefabricated short slab can embed in the installation gap 60 of contiguous prefabricated short slab, also be provided with four spacing gap 71 on the prefabricated short slab, the floating ballast bed plate end of the present invention isolation mounting 6 is supporting adjacent two prefabricated short slabs simultaneously, link to each other by shear hinge 4 between adjacent prefabricated short slab, shear hinge 4 is fastened on respectively on the anchoring piece 9 of contiguous prefabricated short slab again.Plate end level in the floating ballast bed plate end isolation mounting 6 to stopping means still by constituting as the cross spacing of plate end cross spacing device projection 14 and as the longitudinal spacing projection 15 of plate end longitudinal spacing device, wherein, cross spacing projection 14 retainings lean against on the side elevation 80 of prefabricated short slab bulge-structure end, also are provided with the cushion pad 18 that rubber is made between cross spacing projection 14 and the side elevation 80; Longitudinal spacing projection 15 retainings lean against on the side elevation 81 of prefabricated short slab bulge-structure end, also are provided with the cushion pad 19 that rubber is made between longitudinal spacing projection 15 and the side elevation 81.In addition, the level that also is provided with between the contiguous prefabricated short slab independently is to stopping means, independently level with setting between prefabricated short slab 1 and 2 is that example describes to stopping means, as shown in figure 43, described level is made of the bolster made from steel concrete limited post 73 and the elastomeric material of basic 21 integrated setting 74 to stopping means, limited post 73 cooperates respectively with spacing gap 71 in prefabricated short slab 1 and 2, and bolster 74 is arranged between limited post 73 and prefabricated short slab 1 and 2.

Should be noted that during application, because the plate end level in the described floating ballast bed plate end isolation mounting of this example only acts on the bulge-structure of prefabricated short slab to stopping means, therefore it is directive during external force bearing along prefabricated short slab longitudinally, for guaranteeing the floating ballast bed plate end of the present invention isolation mounting performance position-limiting action when the special circumstances such as brake hard, be example with the floating ballast bed of structure shown in Figure 41, the traffic direction that should guarantee rail vehicle is along advance explanation hereby to the direction of prefabricated short slab 1 from prefabricated short slab 3.

In this routine described technical scheme, independently level is to stopping means owing to be provided with, and limited post directly is located on the basis, and therefore the level of prefabricated short slab is to spacing more simple and reliable, and travel safety is better.Particularly when independently level is enough to stopping means intensity, can omit the plate end longitudinal spacing device of plate end level in the stopping means as required, or omission plate end cross spacing device wherein, even can in floating ballast bed plate end isolation mounting, plate end level be set to stopping means or/and inner horizontal to stopping means, be conducive to simplify product structure, reduce production costs.The limit function of floating ballast bed plate end isolation mounting because this type of technical scheme does not require emphasis, therefore when preventing floating ballast bed plate end isolation mounting generation play, also can only between base plate and basis, mechanical brakeman be set, at this, this class technical scheme is described with literal, no longer in addition accompanying drawing.In addition, utilize plunger 64 and base plate 11 to constitute the vertical stopping means of spring failure in this example, fit clearance between the two is as spacing stroke, in the practical application, also can utilize damping urceolus 65 and top board 10 to constitute the vertical stopping means of spring failure, only the fit clearance control of the two need be got final product below 10mm.In addition, the high-damping rubber material of in embodiment, mentioning, other solid damping materials such as high-damping polyurethane can also be adopted in the shearing-type macromolecular material solid damper, identical functions can both be realized.

Be noted that in this routine described technical scheme that the plate end level that is arranged in two floating ballast bed plate end isolation mountings of the same end of prefabricated short slab is to stopping means and is symmetrical arranged, and should note when processing and putting.In addition, independently level is in stopping means, and limited post also can arrange limited post separately except being integral with basis instrument, limited post and basis are fixed together again, and also can serve the same role.

Embodiment nine

Based on embodiment eight described technical schemes, as Figure 44 and the floating ballast bed plate end of the present invention shown in Figure 48 isolation mounting, be with the difference of embodiment eight, the plate end level that arranges on the floating ballast bed plate end isolation mounting is specially limited post 75 to stopping means, limited post 75 is made of round steel pipe, and is connected with top board 10 welderings.In addition, four flexible members 12 are the common complex spring that constitutes of metal stamper spring and elastic rubber material, and are evenly stressed for guaranteeing the metal stamper spring, also are provided with steel plate respectively in the both sides up and down of metal stamper spring, and steel plate and elastic rubber material are sulfided into one.Because elastic rubber material also has good damping capacity simultaneously, therefore, flexible member 12 also possesses the function of damping element simultaneously, in the floating ballast bed plate end isolation mounting damping element is set no longer in addition.Because prefabricated short slab need realize that level is to spacing by floating ballast bed plate end isolation mounting, therefore require floating ballast bed plate end isolation mounting in use play can not take place, so the corresponding gap 60 of installing arranges local junction plate on base plate 11, offers the connecting through hole 16 of strip on the local junction plate.As Figure 46 and shown in Figure 47, the position of four spacing gap 71 is corresponding with limited post 75 in the prefabricated short slab, when prefabricated short slab cooperates with floating ballast bed plate end isolation mounting, be example with floating ballast bed plate end isolation mounting with cooperating of prefabricated short slab 1 and 2, as Figure 45 and shown in Figure 49, floating ballast bed plate end isolation mounting is bearing in the below of prefabricated short slab 1 and 2 simultaneously, limited post 75 is embedded in the spacing gap 71 of corresponding setting on prefabricated short slab 1 and 2, in order to realize cushioning the effect with noise reduction, also be provided with the rubber buffer 76 of shell-like between limited post 75 and prefabricated short slab 1 and 2.After the position adjustment of floating ballast bed plate end isolation mounting finishes, utilize stone bolt 20 that floating ballast bed plate end isolation mounting and basis are fixed together by connecting through hole 16.

In this routine described technical scheme, because the height dimension of flexible member 12 is less in the floating ballast bed plate end isolation mounting 6, not needing to arrange preformed groove in the prefabricated short slab is that plate end isolation mounting is stepped down, and the structure of prefabricated short slab is simpler.Utilize the level of the prefabricated short slab of limited post 75 realizations that arranges in the floating ballast bed plate end isolation mounting to spacing, at this, limited post 75 can use as plate end cross spacing device and plate end longitudinal spacing device simultaneously, and structure is very simple, horizontal good limit effect.Because limited post 75 is arranged on the floating ballast bed plate end isolation mounting, can move with floating ballast bed plate end isolation mounting, during therefore with prefabricated short slab assembling, can cooperatively interact and carry out the position and accurately adjust, should use very convenient.In addition limited post 75 on being welded in top board 10, also can utilize securing member to be fixed on the top board maintain and replace of being more convenient for like this.

Embodiment ten

Based on embodiment nine described know-whies, this type of technical scheme can also be carried out many differentiation, and this type of technical scheme is equally applicable to other forms of prefabricated short slab.The floating ballast bed plate end of the present invention shown in Figure 50 and Figure 51 isolation mounting is that with the difference of embodiment one limited post 75 that the plate end level of floating ballast bed plate end isolation mounting is made by square steel pipe to stopping means constitutes, and is connected with top board 10 welderings.

Accordingly, adopt prefabricated short slab shown in Figure 53, compare with prefabricated short slab shown in Figure 2, the two ends of the prefabricated short slab of this example employing are corresponding with limited post to arrange four spacing gap 77 altogether.During application, as Figure 52, shown in Figure 54 and Figure 55, the floating ballast bed plate end of the present invention isolation mounting 6 still is arranged in the preformed groove 61 of prefabricated short slab bottom, and end that floating ballast bed plate end isolation mounting is supporting adjacent two prefabricated short slabs simultaneously, during assembling, still being arranged between prefabricated short slab 1 and 2 with floating ballast bed plate end isolation mounting is that example describes, the limited post 75 of floating ballast bed plate end isolation mounting is embedded in the spacing gap 77 of corresponding setting on prefabricated short slab 1 and 2, in order to realize cushioning the effect with noise reduction, also be provided with the elastic polyurethane cushion pad 76 of shell-like between limited post 75 and prefabricated short slab 1 and 2.It is to be noted, described cushion pad 76 adopts the mode of cast-in-site to construct, during concrete operations, after limited post 75 is put with the mutual alignment of prefabricated short slab 1 and 2, utilize the bicomponent elastic polyurethane material, mix in the space that is cast in then between limited post 75 and prefabricated short slab 1 and 2 at the scene, namely constitute cushion pad after solidifying.

In this routine described technical scheme, since adopt in the floating ballast bed plate end isolation mounting 6 limited post 75 as plate end level to stopping means, the structure of product is simpler, in addition, compare with embodiment one, using this floating ballast bed plate end isolation mounting constructs when floating ballast bed, floating ballast bed plate end isolation mounting and the assembling process that presets between the short slab are also simpler, the overall structure of railway roadbed is simplified, fine to limit effect to the level that presets short slab, therefore, economy and the practicality of described this class technical scheme of this example are better.

Embodiment 11

The floating ballast bed plate end of the present invention shown in Figure 55 isolation mounting, be with the difference of embodiment one, in order to eliminate plate end level to the gap between stopping means and the prefabricated short slab, in assembling or use, between cross spacing projection 14 and prefabricated short slab, except cushion pad 18 is set, can also sets up and transfer crack backing plate 78.Transfer crack backing plate 78 specifically can be made by metal or plastic material, as long as can reach the purpose of eliminating unnecessary gap, can both realize same effect.Certainly, in order to realize eliminating the purpose in gap, between longitudinal spacing projection and prefabricated short slab, also can arrange and transfer the crack backing plate, not specifically illustrate among the figure.

Based on this routine described know-why, plate end level is to also transferring the crack backing plate to reach the purpose of eliminating the gap, description of drawings no longer one by one by arranging between stopping means and the prefabricated short slab among other embodiment of the floating ballast bed plate end of the present invention isolation mounting.

It is to be noted; the shape of cross section of prefabricated short slab is not limited to the shape described in above-described embodiment among the present invention, and according to requirement of engineering, prefabricated short slab also can be arranged to other shapes; as long as based on know-why of the present invention, also all in protection scope of the present invention.In addition, in actual applications, the concrete form of flexible member and damping element can be varied in the floating ballast bed plate end isolation mounting, and for example flexible member can be helical steel springs, dish spring, rubber spring, polyurethane spring, metal rubber and plastic complex spring or air spring; Damping element comprises viscous type damper, orifice restriction type damper or macromolecular material solid damping element, and wherein macromolecular material solid damping element specifically can be rubber high damping element or polyurethane high damping element etc.It is to be noted that especially flexible member and damping element also can become one, for example adopt the rubber spring of high resiliency, high damping, namely use as flexible member, also use as damping element simultaneously.As long as can satisfy the needs of vibration isolation, can be applied among the present invention.In addition, many in the floating ballast bed plate end isolation mounting eight helical steel springs to be set and a damping element is that example describes among the embodiment, according to the kind difference that adopts flexible member and damping element, the quantity of flexible member and damping element can change according to actual conditions, two even more damping elements for example can be set, also can arrange four, five, six, seven, ten even more flexible members, but in order to make floating ballast bed plate end isolation mounting the enabling capabilities of contiguous prefabricated short slab is realized basis equalization, flexible member and damping element should be as far as possible along the horizontal middle vertical plane symmetric arrangement of floating ballast bed plate end isolation mounting, that is to say, guarantee that as far as possible the quantity of the flexible member of every prefabricated short slab below and damping element is identical.

When existing pure built-in steel spring floating slab is installed, earlier the on-the-spot group of the plate of floating is wire-tie, fluid concrete again, also want curing concrete, after concrete curing is good, place vibration isolator again, jacking leveling then, many procedures.And in the technical scheme of the present invention's record, owing to adopted prefabricated short slab and floating ballast bed plate end isolation mounting, bring the advantage of following installation, economy and mechanical characteristic aspect:

1) pure built-in steel spring floating slab will begin jacking from ground, every jacking 10mm that takes turns, every block of plate is wanted jacking 3～4 bouts, and prefabricated short slab can directly be placed on the floating ballast bed plate end of the present invention isolation mounting, prefabricated short slab is positioned at working depth substantially during placement, has saved top lifting height and jacking bout;

2) same reason, the present invention has saved and has been used as the leveling steel plate of heightening pad or height adjusting cushion plate in a large number, no matter is floating ballast bed plate end isolation mounting, or all the other elastic vibration isolation devices, and its leveling steel plate is not for jacking is equipped with, but is equipped with for leveling;

3) aspect mechanical characteristic, the plate of floating of rubber pad whole face shop or strip shop can not produce the seesaw effect, if but prefabricated short slab is all with some support pattern elastomeric bearings such as built-in vibration isolators, because structural reason, want a fastener spacing at least from the plate end of floating, when only having a wheel shaft to be positioned to float the plate seam crossing, can produce upwards moment, form seesaw effect or chain effect, cause the stability decreases of floating plate, produce low frequency and clap and shake and noise, the present invention is placed on floating ballast bed plate end isolation mounting the seam crossing of plate end below or plate, can avoid the seesaw phenomenon to take place, guarantee vibration isolating effect and the safety of floating plate;

4) in addition from the cost performance angle, train load is during through prefabricated short slab, and plate end and rail will produce sinking, to with same rail sinking admissible value, vibration isolator is the closer to the end, needed vibration isolator rigidity is more little, used number of springs is minimum, therefore most economical, it is most economical vibration isolator to be positioned over end (below, end), and adopts shear hinge simultaneously, the rigidity that can make a vibration isolator at plate seam place is that two adjacent prefabricated short slabs share, rigidity is shared, almost multiplication, more economically;

The common feature that all embodiment of these characteristics the present invention possess illustrates in the lump at this.In addition, be noted that especially, plate end level described in the present invention is to stopping means, wherein the implication of " level to " is not to refer to traditional horizontal direction, but refer in particular to the residing in-plane of two one steel rail treads of same circuit, this plane does not overlap with traditional horizontal direction under given conditions, for example, when the curved section of track, itself and traditional horizontal direction just present certain included angle.In addition, in the embodiment of the invention, only with the plate end of every prefabricated short slab two floating ballast bed plate end isolation mountings being set is that example describes, based on know-why of the present invention, the plate end of every prefabricated short slab also can arrange and surpass two floating ballast bed plate end isolation mountings, for example can set up a floating ballast bed plate end isolation mounting in the middle part longitudinally at the plate end; Also can be along the both sides of the vertical midship section of plate body, each side is placed two floating ballast bed plate end isolation mountings respectively, each floating ballast bed plate end isolation mounting is supporting the plate end of adjacent two prefabricated short slabs more respectively, and these all are the simple transformation of technical solution of the present invention, no longer in addition description of drawings.The technical scheme of narrating in the embodiments of the invention is only for understanding know-why of the present invention better; be not limited to the technical scheme itself that embodiment narrates; technology among many embodiment is decided on a verdict and can also be carried out cross-utilization; also can both realize good effect; in this explanation for example that differs, all within the protection domain that the present invention requires.

Claims (18)

1. floating ballast bed plate end isolation mounting, comprise top board, base plate, flexible member and damping element, flexible member and damping element are arranged between top board and the base plate, it is characterized in that arranging on the top board plate end level to stopping means, plate end level comprises plate end cross spacing device or/and plate end longitudinal spacing device to stopping means.

2. floating ballast bed plate end isolation mounting according to claim 1 is characterized in that flexible member and damping element are along the horizontal midship section symmetric arrangement of plate end isolation mounting.

3. floating ballast bed plate end isolation mounting according to claim 1 is characterized in that plate end cross spacing device is the cross spacing projection that arranges on the top board.

4. floating ballast bed plate end isolation mounting according to claim 1 is characterized in that plate end cross spacing device comprises the cross spacing plate, regulates bolt and lock nut, or cross spacing plate, adjusting bolt and accent crack pad.

5. floating ballast bed plate end isolation mounting according to claim 1 is characterized in that plate end longitudinal spacing device comprises the longitudinal spacing plate, regulates bolt and lock nut, or longitudinal spacing plate, adjusting bolt and accent crack pad.

6. floating ballast bed plate end isolation mounting according to claim 1 is characterized in that plate end longitudinal spacing device is the longitudinal spacing projection that arranges on the top board.

7. floating ballast bed plate end isolation mounting according to claim 1 is characterized in that plate end longitudinal spacing device comprises longitudinal spacing spare and locking cushion block, comprises gathering sill on the longitudinal spacing spare, and the locking cushion block is arranged in the gathering sill.

8. floating ballast bed plate end isolation mounting according to claim 7 is characterized in that locking cushion block and is made up of at least two son locking cushion blocks.

9. floating ballast bed plate end isolation mounting according to claim 1, it is characterized in that the flexible member in the floating ballast bed plate end isolation mounting comprises helical steel springs, dish spring, rubber spring, polyurethane spring, metal rubber and plastic complex spring or air spring, damping element comprises viscous type damper, orifice restriction type damper or macromolecular material solid damping element.

10. floating ballast bed plate end isolation mounting according to claim 1, it is characterized in that the damping element in the floating ballast bed plate end isolation mounting is viscous shearing type damper or shearing-type macromolecular material solid damper, it is made of damping material, plunger and damping urceolus.

11. floating ballast bed plate end isolation mounting according to claim 1 is characterized in that in the floating ballast bed plate end isolation mounting the vertical stopping means of spring failure being set, the spacing stroke of the vertical stopping means of spring failure is less than 10mm.

12. floating ballast bed plate end isolation mounting according to claim 11 is characterized in that the damping element of the vertical stopping means of spring failure and plate end isolation mounting becomes one.

13. floating ballast bed plate end isolation mounting according to claim 1 is characterized in that inner horizontal being set to stopping means between top board and the base plate in the floating ballast bed plate end isolation mounting.

14. floating ballast bed plate end isolation mounting according to claim 13 is characterized in that inner horizontal becomes one to the damping element of stopping means and plate end isolation mounting.

15. floating ballast bed plate end isolation mounting according to claim 1, it is characterized in that between floating ballast bed plate end isolation mounting and basis linkage being set, linkage is specially the connecting through hole and the basis that arrange on the floating ballast bed plate end isolation mounting base plate and goes up the corresponding stone bolt that arranges, perhaps the corresponding alignment pin that arranges is gone up on the connecting through hole that arranges on the base plate and basis, the perhaps mechanical brakeman that arranges between base plate and the basis, perhaps the base plate bottom surface arrange to the outstanding positioning convex of basic direction.

16. floating ballast bed plate end isolation mounting according to claim 1 is characterized in that the top board surface of floating ballast bed plate end isolation mounting arranges the leveling backing plate.

17. floating ballast bed plate end isolation mounting according to claim 1 is characterized in that also comprising cushion pad.

18. floating ballast bed plate end isolation mounting according to claim 1 is characterized in that also comprising accent crack backing plate.

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