阅读说明：本技术 钢轨临时固定结构及纵向挡槽块安装施工方法 (Temporary steel rail fixing structure and longitudinal groove blocking block installation construction method ) 是由 钱振地 毕小毛 肖大庆 林晓波 张长春 肖伟 肖毅 王平 刘学毅 苗昌荗 覃婷 于 2019-10-24 设计创作，主要内容包括：本发明涉及钢轨临时固定结构及纵向挡槽块安装施工方法,它包括板体、钢轨组件、临时扣件和降噪块,钢轨组件包括钢轨,板体顶面有内凹形成的承轨槽,钢轨置于承轨槽处,钢轨通过临时扣件固定于板体上；纵向相邻两个临时扣件间、钢轨的内外侧均安装有降噪块,降噪块底部嵌入钢轨组件与承轨槽槽壁之间,降噪块的顶部延伸到轨头下方。本发明适用于连续支承轨道系统施工过程中钢轨的临时固定；待轨道线路稳定后,拆除临时扣件,再安装纵向挡槽块和浇筑高分子阻尼材料以对钢轨组件进行长久固定,可对钢轨提供连续支承和锁固,可基本消除钢轨在外力作用下所产生的震动源,利于改善轮轨接触关系,极大减少轮轨的磨耗,提高轮轨使用寿命。(The invention relates to a temporary steel rail fixing structure and a longitudinal groove blocking block installation construction method, which comprises a plate body, a steel rail assembly, a temporary fastener and a noise reduction block, wherein the steel rail assembly comprises a steel rail, the top surface of the plate body is provided with a concave rail bearing groove, the steel rail is arranged at the rail bearing groove, and the steel rail is fixed on the plate body through the temporary fastener; between two adjacent vertical temporary fastening pieces, the inside and outside of rail all install and fall the piece of making an uproar, fall the piece bottom of making an uproar and imbed between rail subassembly and the support rail groove cell wall, fall the top of making an uproar the piece and extend to railhead below. The invention is suitable for temporary fixation of the steel rail in the construction process of the continuous support rail system; after the track line is stable, the temporary fastener is removed, then the longitudinal groove blocking block is installed, and the polymer damping material is poured to fix the steel rail assembly for a long time, so that continuous supporting and locking of the steel rail can be provided, a vibration source generated by the steel rail under the action of external force can be basically eliminated, the contact relation of the wheel rail is favorably improved, the abrasion of the wheel rail is greatly reduced, and the service life of the wheel rail is prolonged.)

1. Rail temporary fixation structure, its characterized in that: including plate body, rail subassembly and interim fastener, the rail subassembly includes the rail, the plate body top surface has the vertical recess of twice, and the tank bottom of every vertical recess has the rail supporting groove of a indent formation, and the rail is arranged rail supporting groove department in and is fixed in the plate body through a plurality of interim fasteners on, and on the step of rail supporting groove both sides was arranged in to interim fastener, interim fastener and plate body bolted connection.

2. A temporary rail fixing structure according to claim 1, wherein: the rail bearing groove is positioned in the center of the groove bottom of the longitudinal groove.

3. A temporary rail fixing structure according to claim 1, wherein: the temporary fastener comprises a temporary iron buckle plate, a temporary iron base plate and a temporary fixing bolt, wherein the temporary iron base plate is arranged on the plate body, the temporary iron buckle plate is arranged on the temporary iron base plate, the temporary iron buckle plate and the temporary iron base plate are fixedly connected with the plate body through the temporary fixing bolt, the inner end of the temporary iron base plate supports against the bottom of the rail bottom side of the steel rail, and the temporary iron buckle plate is buckled on the top surface of the rail bottom of the steel rail from top to bottom.

4. A rail temporary fixing structure according to claim 1, 2 or 3, wherein: the steel rail assembly further comprises a height-adjusting base plate and a long elastic base plate, the long elastic base plate is paved at the bottom of the rail bearing groove, the height-adjusting base plate is pressed on the long elastic base plate, and the steel rail is pressed on the height-adjusting base plate.

5. A rail temporary fixing structure according to claim 1 or 3, wherein: it still falls the piece of making an uproar including falling, between two vertical adjacent temporary buckling pieces, the inside and outside of rail all installs and falls the piece of making an uproar, falls the piece of making an uproar and supports in rail bottom upper surface, falls the top of making an uproar the piece and extends to railhead below.

6. A temporary fixing structure of a steel rail according to claim 5, wherein: the noise reduction block is attached to the rail web of the steel rail.

7. The longitudinal groove blocking block installation construction method is characterized by comprising the following steps: comprises the following steps of (a) carrying out,

s1, running a construction train on the temporary fixing structure of the steel rail as claimed in any one of claims 1 to 6, and periodically measuring and adjusting the height-adjusting tie plate;

s2, removing the temporary fastener after the track line is stabilized; before the temporary fasteners are removed, the noise reduction block is adhered between the two temporary fasteners and on the rail web at two sides of the steel rail, the noise reduction block is supported on the upper surface of the bottom of the steel rail, and the top of the noise reduction block extends to the position below the rail head;

removing a section of temporary fastener, and installing a section of longitudinal groove blocking block which is fixedly connected with the plate body through a bolt; longitudinal groove blocking blocks are arranged on steps on two sides of the rail bearing groove, the longitudinal groove blocking blocks are longitudinally and continuously arranged along two sides of the rail bearing groove, and the rail bearing groove and the longitudinal groove blocking blocks on the two sides of the rail bearing groove form a steel rail embedded groove;

and after the longitudinal groove blocking block on each plate body is installed, pouring a polymer damping material into the embedded groove of the steel rail to lock the steel rail.

8. The longitudinal groove stopper installation and construction method according to claim 7, wherein: each plate body has 4 longitudinal groove blocking blocks on one side of the rail supporting groove.

Technical Field

The invention relates to the technical field of railway tracks, in particular to a temporary steel rail fixing structure and a longitudinal groove blocking block installation construction method.

Background

The track slab is a novel under-track component in the structural form of a slab for supporting and securing a rail and distributing the load transmitted by a train through the rail to an under-slab foundation.

The double-block ballastless track, CRTS I type, CRTS II type and CRTS III type plate ballastless tracks are all applied to high-speed railways or passenger special lines in China. The track slabs of the CRTS I type, CRTS II type and CRTS III type slab ballastless tracks are all of prestressed structures.

The prior track system adopts a fastener system to support a steel rail, the fastener system supports the steel rail discontinuously, the steel rail has a suspended section, when a train runs on the steel rail at a certain speed, the steel rail can generate pined-pined vibration mode, the contact relation of wheel rails is poor, and the abrasion of the steel rail is large. If the fastener system is cancelled and the through bearing type continuous supporting track system is adopted, the initial debugging and the later maintenance and replacement of the steel rail are difficult.

Disclosure of Invention

The invention aims to provide a temporary steel rail fixing structure and a longitudinal groove blocking block installation construction method, which can temporarily fix a steel rail assembly and facilitate continuous adjustment of a steel rail at the initial stage; meanwhile, the steel rail is convenient to maintain and replace at the later stage.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the temporary fixing structure of the steel rail comprises a plate body, a steel rail assembly and temporary fasteners, wherein the steel rail assembly comprises the steel rail, two longitudinal grooves are formed in the top surface of the plate body, a rail bearing groove formed by an inner concave is formed in the groove bottom of each longitudinal groove, the steel rail is arranged on the rail bearing groove and fixed on the plate body through the temporary fasteners, the temporary fasteners are arranged on steps on two sides of the rail bearing groove, and the temporary fasteners are connected with the plate body through bolts.

Preferably, the rail groove is located centrally in the groove bottom of the longitudinal groove.

Further, interim fastener includes interim indisputable buckle, interim iron tie plate and interim fixing bolt, on the plate body was arranged in to interim iron tie plate, interim iron buckle was arranged in on the interim iron tie plate, and interim iron buckle and interim iron tie plate pass through interim fixing bolt and plate body rigid coupling, and the inner of interim iron tie plate supports the rail bottom side bottom of rail, and interim iron buckle is from last down detaining on rail bottom of the rail top surface.

Further, the steel rail assembly further comprises a height-adjusting base plate and a long elastic base plate, the long elastic base plate is paved at the bottom of the rail bearing groove, the height-adjusting base plate is pressed on the long elastic base plate, and the steel rail is pressed on the height-adjusting base plate.

Further, the interim fixed knot of rail constructs still includes and falls the piece of making an uproar, falls the piece of making an uproar between two vertical adjacent interim fasteners, the inside and outside of rail all installs, falls the piece bottom support of making an uproar and in rail bottom surface, falls the top of making an uproar and extends to railhead below.

Furthermore, the noise reduction block is attached to the rail web of the steel rail.

The longitudinal groove blocking block installing and constructing method includes the following steps,

s1, driving a project train on the temporary steel rail fixing structure, and periodically measuring and adjusting the height-adjusting base plate;

s2, removing the temporary fastener after the track line is stabilized; before the temporary fasteners are removed, the noise reduction block is ensured to be stuck between the two temporary fasteners and on the rail waists at two sides of the steel rail; the noise reduction block is supported on the upper surface of the bottom of the steel rail, and the top of the noise reduction block extends to the position below the rail head;

removing a section of temporary fastener, and installing a section of longitudinal groove blocking block which is fixedly connected with the plate body through a bolt; longitudinal groove blocking blocks are arranged on steps on two sides of the rail bearing groove, the longitudinal groove blocking blocks are longitudinally and continuously arranged along two sides of the rail bearing groove, and the rail bearing groove and the longitudinal groove blocking blocks on the two sides of the rail bearing groove form a steel rail embedded groove;

and after the longitudinal groove blocking block on each plate body is installed, pouring a polymer damping material into the embedded groove of the steel rail to lock the steel rail.

Preferably, each plate body has 4 longitudinal catch grooves on one side of the rail groove.

Compared with the prior art, the invention has the following beneficial effects:

the temporary fixing structure for the steel rail can temporarily fix the steel rail assembly, and the shape and position of the steel rail can be adjusted continuously at the initial stage conveniently;

and 2, after the track line is stable, installing a longitudinal groove blocking block and pouring a high-molecular damping material to fix the steel rail assembly for a long time. The rail system constructed by the method can provide continuous support and continuous locking for the steel rail, can basically eliminate a vibration source generated by the steel rail under the action of external force, reduces the dynamic stress of the wheel rail, weakens the vibration noise transmission generated by the wheel rail, is beneficial to improving the contact relation of the wheel rail, greatly reduces the abrasion of the wheel rail and prolongs the service life of the wheel rail;

3, the longitudinal groove blocking blocks on the two sides of the rail bearing groove can be detached, and the steel rail assembly and the longitudinal groove blocking blocks can be detached integrally during later maintenance or replacement, so that the maintenance is convenient and fast.

Drawings

FIG. 1 is a schematic structural view of a temporary fixing structure of a steel rail according to an embodiment;

FIG. 2 is an enlarged view at A in FIG. 1;

fig. 3 is a schematic structural diagram of a plate body according to an embodiment;

FIG. 4 is a cross-sectional view of a noise reduction block after the longitudinal notch block has been installed in accordance with one embodiment;

FIG. 5 is a top view of the longitudinal slot stop block after installation;

FIG. 6 is a cross-sectional view of the first embodiment of the mid-high molecular damping material after casting;

FIG. 7 is a side view of the noise reduction block after the polymer damping material is poured in the second embodiment;

in the figure: 1-plate body, 2-longitudinal groove blocking block, 3-bolt, 4, longitudinal groove, 5-steel rail assembly, 6-step, 7-noise reduction block, 9-temporary fastener, 91-temporary iron buckle plate, 92-temporary iron base plate, 93-temporary fixing bolt, 11-rail bearing groove, 12-bolt sleeve, 51-long elastic base plate, 52-heightening base plate, 53-steel rail and 54-polymer damping material.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings.