CN106702834A

CN106702834A - Midline deviation rectifying method for sedimentary offset ballastless track

Info

Publication number: CN106702834A
Application number: CN201611231397.0A
Authority: CN
Inventors: 谢永江; 郑新国; 刘竞; 李书明; 杨德军; 曾志; 程冠之; 董全霄; 冯仲伟; 朱长华; 翁智财; 王月华
Original assignee: China Academy of Railway Sciences Corp Ltd CARS; Railway Engineering Research Institute of CARS
Current assignee: China Academy of Railway Sciences Corp Ltd CARS; Railway Engineering Research Institute of CARS
Priority date: 2016-12-28
Filing date: 2016-12-28
Publication date: 2017-05-24

Abstract

The invention discloses a midline deviation rectifying method for a sedimentary offset ballastless track. The midline deviation rectifying method comprises the following steps that (1) the uplifting quantity and the offset quantity of the sedimentary offset ballastless track line are determined; (2) the track structure characteristics are combined, a grouting uplifting hole is formed in the top surface of the ballastless track structure, and grouting uplifting material is injected into a ballastless track supporting layer or under a base plate through a grouting pipe installed in the grouting hole by adopting high-pressure grouting equipment under a certain grouting pressure according to the determined equipment parameters and the grouting steps, so that an overall ballast bed and the upper structure of the ballastless track are uplifted; (3) a jacking and pushing point is arranged on the side surface of the ballastless track structure, a jacking and pushing device is installed, and the ballastless track line is rectified to the designed position through the jacking and pushing process of grouping loading and jacking and pushing step by step; and (4) after the midline is rectified, the line recovery work is timely conducted, a lower gap of the overall ballast bed of the ballastless track is filled with a filling material, a fastener system is finely adjusted, and the line smoothness is recovered.

Description

A kind of center line method for correcting error for settling skew non-fragment orbit

Technical field

The invention belongs to high speed railway track Structural defect remedial technology field, in particular to one kind for settling skew nothing The center line method for correcting error of tiny fragments of stone, coal, etc. track.

Background technology

The bulk solid road that ballastless track structure is made firm by ramming using the concrete integral channel bed of big rigidity instead of rubble railway ballast Bed, the features such as lacking with smooth-going, stabilization, durable, maintenance workload, has turned into the primary trace of newly-built high-speed railway at present Structural shape.For ensure high-speed railway it is safe efficient run, China under ballastless track structure line basis sedimentation and deformation Strict demand is proposed, remarkable effect is also achieved.But China's non-fragment orbit circuit is long, span big, when it is by special sector Especially during soft soil foundation, part non-fragment orbit circuit can be disturbed due to the soil body of residing complex geologic conditions or nearby lines Midline shift is produced etc. reason.Fastener system in ballastless track structure can provide limited tune for line midline offset problem Whole amount, but when line midline side-play amount exceedes fastener system adjustment amount, would have to the side by limiting train running speed Formula carrys out guarantee driving safety, so as to influence the normal operation of train.

At present, the center line method for correcting error research for ballastless track of high-speed railway is less." one kind is for settling without the tiny fragments of stone, coal, etc. for patent Track centre offsets method for correcting error "（CN 104131499 B）The core of the non-fragment orbit midline shift deviation correcting technology is online Road outside sets curtain, by carrying out slip casting on the inside of curtain, makes slurries that extension, solidification and shape are oriented under curtain iris action Into sideways against power, to realize laterally rectifying a deviation track structure to opposite side, the technology is high to curtain setting requirements, field conduct Difficulty is big, high cost, and is not suitable for the larger non-fragment orbit line midline correction of side-play amount.Patent is " high for soft clay area The method for correcting error of fast railway ballastless track roadbed "（CN 103821039 B）The means of used rotary churning pile solid soil, Promoted using the moment injection pressure of rotary churning pile generation of constructing and produce displacement positioned at the pile foundation reinforcement area of high-speed railway embankment bottom, Pile foundation reinforcement zone moves the foundation stabilization bed course and high-speed railway embankment synchronizing moving above pile foundation reinforcement area, and it is right to realize The correction of high-speed railway subgrade, this method is only applicable to soft clay area, and equipment needed for construction is huge, Construction control precision It is low, it is not suitable for the quick correction operation in Window time." CRTS I-type plate-types are without tiny fragments of stone, coal, etc. rail on a kind of high-speed railway subgrade for patent Road lifting deviation correcting device and method "（201510341806.1）Lifting frock is installed on bedplate, using hydraulic system the bottom of to Seat board and upper rail guidance tape carry out overall lifting, translation, but this method must be arranged above multiple H types and indulge in track structure Girder steel, its required plant equipment is huge, it is difficult to rectification work is completed in Window time." one kind is for roadbed section high speed for patent Railway ballastless track center line method for correcting error "（CN 106049193 A）Will be overall by mechanical lifting devices such as jack or air bags Pine is first pushed up between railway roadbed and graded broken stone to fall after rise again, bottom solid concrete roabed is translated using thrustor then, this method Required plant equipment is huge, and operating process is cumbersome, and efficiency of construction is relatively low.

Therefore, how fast and safely simultaneously energy economy enduringly solves the midline shift of ballastless track of high-speed railway structure, still It is so current problem demanding prompt solution.

The content of the invention

It is an object of the invention to solve the above problems, there is provided a kind of center line correction side for settling skew non-fragment orbit Method, technical scheme is as follows.

A kind of center line method for correcting error for settling skew non-fragment orbit, it is characterised in that comprise the following steps：（1）It is determined that Sedimentation non-fragment orbit circuit Uplifting amount and side-play amount；（2）With reference to track structure feature, slip casting is set in ballastless track structure top surface Lifting hole, and high-pressure slip-casting equipment is used, under certain grouting pressure, according to the device parameter and slip casting step that determine, will note Slurry lifting material is injected into ballastless track supporting layer or bedplate lower section by the Grouting Pipe being installed in injected hole, realizes without the tiny fragments of stone, coal, etc. The lifting of track solid concrete roabed and superstructure；（3）Pushing tow point is set in ballastless track structure side, and thrustor is installed, By being grouped the pushing process of loading, pushing tow step by step, non-fragment orbit circuit is rectified a deviation to design attitude；（4）Line midline is rectified a deviation After finishing, row line is entered in time and is resumed operation, non-fragment orbit solid concrete roabed lower space is filled full using packing material, led to Accurate adjustment fastener system is crossed, recovers Track regularity.

The injected hole is 1m~10m along the spacing of line direction, and horizontal direction spacing is 0.5m~3m, injected hole Internal diameter be 10mm~50mm, injected hole should be deep to 5cm below ballastless track structure supporting course or base board concrete~ 100cm positions.

There is fast connector to play directed flow to injecting paste material on the Grouting Pipe top；Grouting Pipe bottom has , can be fixed on Grouting Pipe in the injected hole of ballastless track supporting layer or base board concrete by stopping means.

The pushing tow point is arranged at the ballastless track structure side of skew circuit, wherein, pushing tow point is along between line direction Away from being 1m~10m.

Described thrustor, is made up of jack, power transmission steelframe, power transmission steel plate, adjustment backing plate and counter-force pier（See attached Fig. 1）.

The slip-casting lifting material be with dilatancy or without expansile fast hard material, operable time be 5s~ Up to more than the 50% of design strength, shearing strength is 0.01 ~ 1 with compression strength ratio to 600s, 1h compression strength；Fast hard material It is the one kind in the fast hard material of organic rapid hardening, polyurethane, polyureas, epoxy resin, acrylic resin and unsaturated polyester (UP) etc., or It is the one kind in the fast hard material waterglass-cement system of inorganic rapid hardening, aluminium sulfate system, aluminate and phosphate system.

The packing material is high polymer grouting material or resin mortar.

The present invention is a kind of to be for settling the good effect of the center line method for correcting error of skew non-fragment orbit：

（1）The method of slip-casting lifting is carried out using special material to reduce the constraint of supporting course or bedplate bottom, it is this to be used for The fast hard material of rapid hardening of slip-casting lifting has high compressive strength and low shearing strength simultaneously so that the jacking force needed for correction is significantly Reduce, so as to reduce the setting of counterforce device needed for correction pushing tow operation, while reducing correction task difficulty and cost.

（2）Compared to the operating type for using means such as air bag liftings rectified a deviation after first lifting, the method in the present invention Required equipment is simple, and upper and lower road is convenient, it is easy to carry out sharp work in skylight point.

（3）The scope of application is big, and the sedimentation non-fragment orbit center line correction to soft clay area and non-soft clay area is applicable, to straight Line segment non-fragment orbit and the correction of curved section non-fragment orbit center line are applicable.

Brief description of the drawings

Fig. 1 and Fig. 2 are the structural representation of the thrustor.

In figure：1- jack, 2- power transmissions steel plate, 3- adjustment backing plate, 4- counter-forces pier, 5- power transmission steelframes.

Specific embodiment

Below by embodiment, and with reference to accompanying drawing, technical scheme is further illustrated.

Embodiment 1：The embodiment of the invention provides a kind of for high-speed railway subgrade straightway sedimentation non-fragment orbit center line Correction restorative procedure, methods described includes herein below：

（1）Slip-casting lifting material used is the fast hard material of polyurathamc class, and operable time is 6s, and 1h compression strength reaches and sets The 90% of meter intensity, material shearing strength is 0.02 with compression strength ratio；

（2）Construction pronucleus treats the correction linear data of section non-fragment orbit, and each track is numbered, and sets up measurement control Net, and determine Uplifting amount and correction amount.There is midline shift, circuit correction section 1# to 40# support rails to circuit outside in the section The design correction amount and design Uplifting amount of platform are shown in Table 1.

The design correction amount and design rising height of straightway 1# to the 40# tracks of table 1

Track is numbered	Design correction amount（mm）*	Design Uplifting amount（mm）	Track is numbered	Design correction amount（mm）*	Design Uplifting amount（mm）
						1#	5	15	21#	19	19
2#	6	16	22#	18	19
						3#	7	17	23#	17	18
4#	8	18	24#	16	17
						5#	9	19	25#	15	16
6#	10	20	26#	14	15
						7#	11	20	27#	13	15
8#	12	20	28#	13	15
						9#	13	21	29#	13	15
10#	14	21	30#	13	15
						11#	15	22	31#	12	15
12#	16	22	32#	11	15
						13#	17	22	33#	10	14
14#	18	23	34#	10	14
						15#	18	22	35#	10	14
16#	18	22	36#	9	14
						17#	19	21	37#	8	14
18#	20	20	38#	7	14
						19#	20	20	39#	6	14
20#	20	20	40#	5	14

* on the occasion of for circuit lateral offset, negative value is to circuit offset inboard

（2）With reference to ballastless track structure feature, slip-casting lifting hole is set, wherein, slip-casting lifting hole is along the spacing of line direction 2m, horizontal direction spacing is 1m, and slip-casting lifting hole internal diameter is 20mm, slip-casting lifting hole depth to ballastless track structure supporting course coagulation Native following about 50cm positions.

（3）Slip-casting lifting operation is carried out using above-mentioned slip-casting lifting material at injected hole, by non-fragment orbit solid concrete roabed And superstructure lifting 15mm or so.

（4）With reference to ballastless track structure feature and design correction amount, carry out center line rectify a deviation pushing tow point setting, pushing tow point with The spacing of 8m is arranged at ballastless track structure side along line direction.

（5）The thrustor for be made up of jack, power transmission steelframe, power transmission steel plate, adjustment backing plate and counterforce device is pacified Each pushing tow point of dress, wherein counterforce device correspondence is arranged.

（6）Correction operation is proceeded by from side-play amount maximum, after this pushing tow terminates, at new maximum offset again It is secondary to carry out pushing tow operation, until non-fragment orbit line midline recovers to design load.

（7）After the correction of non-fragment orbit center line terminates, ballastless track structure is raised to using high polymer grouting lifting material Design altitude, and non-fragment orbit cavity is filled up completely with resin mortar.

（8）Construction is checked the linear data of non-fragment orbit after terminating, the reality of circuit correction section 1# to 40# tracks Border correction amount and actual Uplifting amount are shown in Table 2.

The actual correction amount and actual rising height of straightway 1# to the 40# tracks of table 2

Track is numbered	Actual correction amount（mm）*	Actual Uplifting amount（mm）	Track is numbered	Actual correction amount（mm）*	Actual Uplifting amount（mm）
						1#	5	15	21#	18	20
2#	6	16	22#	17	19
						3#	7	16	23#	16	18
4#	8	17	24#	16	17
						5#	9	18	25#	15	16
6#	10	19	26#	14	16
						7#	11	20	27#	13	15
8#	11	20	28#	13	15
						9#	12	21	29#	13	15
10#	13	21	30#	12	15
						11#	14	21	31#	11	15
12#	15	22	32#	11	14
						13#	16	22	33#	10	14
14#	17	23	34#	10	14
						15#	18	22	35#	10	14
16#	18	22	36#	9	14
						17#	19	22	37#	8	14
18#	20	21	38#	7	14
						19#	20	20	39#	6	14
20#	19	20	40#	5	14

Described non-fragment orbit center line method for correcting error, can exist the control of high-speed railway subgrade ballastless track structure center line correction precision Within 1mm, and the setting requirements of counterforce device are greatly reduced.

Embodiment 2：The embodiment of the invention provides a kind of for the sedimentation non-fragment orbit center line correction of high-speed railway subgrade curved section Restorative procedure, methods described includes herein below：

（1）Slip-casting lifting material used is the fast hard material of aluminium sulfate class, and operable time is 200s, and 1h compression strength reaches and sets The 55% of meter intensity, material shearing strength is 0.5 with compression strength ratio；

（2）Construction pronucleus treats the correction linear data of section non-fragment orbit, and each track is numbered, and sets up measurement control Net, and determine Uplifting amount and correction amount.There is midline shift, circuit correction section 1# to 40# support rails to circuit inner side in the section The design correction amount and design Uplifting amount of platform are shown in Table 3.

The design correction amount and design rising height of curved section 1# to the 40# tracks of table 3

Track is numbered	Design correction amount（mm）*	Design Uplifting amount（mm）	Track is numbered	Design correction amount（mm）*	Design Uplifting amount（mm）
						1#	-6	18	21#	-16	24
2#	-7	19	22#	-16	24
						3#	-8	19	23#	-15	24
4#	-9	19	24#	-15	23
						5#	-10	20	25#	-15	22
6#	-11	21	26#	-15	21
						7#	-12	21	27#	-14	20
8#	-12	21	28#	-14	19
						9#	-12	22	29#	-13	18
10#	-13	22	30#	-12	17
						11#	-13	23	31#	-11	17
12#	-14	23	32#	-10	16
						13#	-15	23	33#	-9	15
14#	-15	24	34#	-9	15
						15#	-15	24	35#	-9	14
16#	-15	24	36#	-9	13
						17#	-16	24	37#	-9	12
18#	-16	25	38#	-8	11
						19#	-16	25	39#	-7	11
20#	-16	25	40#	-6	10

（2）With reference to ballastless track structure feature, slip-casting lifting hole is set, wherein, slip-casting lifting hole is along the spacing of line direction 2m, horizontal direction spacing is 1.5m, and slip-casting lifting hole internal diameter is 30mm, and slip-casting lifting hole depth is mixed to ballastless track structure supporting course The solidifying following about 10cm positions of soil.

（3）Slip-casting lifting operation is carried out using above-mentioned slip-casting lifting material at injected hole, by non-fragment orbit solid concrete roabed And superstructure lifting 8mm or so.

（4）With reference to ballastless track structure feature and design correction amount, carry out center line rectify a deviation pushing tow point setting, pushing tow point with The spacing of 1.5 m is arranged at ballastless track structure side along line direction.

（8）Construction is checked the linear data of non-fragment orbit after terminating, the reality of circuit correction section 1# to 40# tracks Border correction amount and actual Uplifting amount are shown in Table 4.

The actual correction amount and actual rising height of curved section 1# to the 40# tracks of table 4

Track is numbered	Actual correction amount（mm）*	Actual Uplifting amount（mm）	Track is numbered	Actual correction amount（mm）*	Actual Uplifting amount（mm）
						1#	-6	18	21#	-16	24
2#	-7	19	22#	-15	24
						3#	-8	19	23#	-15	23
4#	-9	19	24#	-15	23
						5#	-10	20	25#	-15	22
6#	-11	21	26#	-14	21
						7#	-12	21	27#	-14	20
8#	-12	21	28#	-14	19
						9#	-13	21	29#	-14	18
10#	-13	22	30#	-13	17
						11#	-14	22	31#	-12	16
12#	-14	23	32#	-11	15
						13#	-14	23	33#	-10	15
14#	-15	23	34#	-9	15
						15#	-15	24	35#	-9	14
16#	-15	24	36#	-9	13
						17#	-15	24	37#	-9	12
18#	-16	24	38#	-8	11
						19#	-16	25	39#	-7	10
20#	-16	25	40#	-6	10

The above-mentioned description to embodiment is for ease of those skilled in the art it will be appreciated that and the application present invention. Person skilled in the art obviously can easily make various modifications to these embodiments, and described herein general Principle is applied in other embodiment without by performing creative labour.Therefore, the invention is not restricted to embodiment here, this Art personnel announcement of the invention, the improvement made for the present invention and modification all should be in protection models of the invention Within enclosing.

Claims

1. it is a kind of for settle skew non-fragment orbit center line method for correcting error, it is characterised in that comprise the following steps：（1）It is determined that heavy Drop non-fragment orbit circuit Uplifting amount and side-play amount；（2）With reference to track structure feature, slip casting lift is set in ballastless track structure top surface Hole is risen, and uses high-pressure slip-casting equipment, under certain grouting pressure, according to the device parameter and slip casting step that determine, by slip casting Lifting material is injected into ballastless track supporting layer or bedplate lower section by the Grouting Pipe being installed in injected hole, realizes without tiny fragments of stone, coal, etc. rail The lifting of road solid concrete roabed and superstructure；（3）Pushing tow point is set in ballastless track structure side, and thrustor is installed, lead to Packet loading, the pushing process of pushing tow step by step are crossed, non-fragment orbit circuit is rectified a deviation to design attitude；（4）Line midline has been rectified a deviation Bi Hou, enters row line and resumes operation in time, and non-fragment orbit solid concrete roabed lower space is filled into full using packing material, passes through Accurate adjustment fastener system, recovers Track regularity.

2. center line method for correcting error according to claim 1, it is characterised in that：The injected hole is along the spacing of line direction 1m~10m, horizontal direction spacing is 0.5m~3m, and injected hole internal diameter is 10mm~50mm, and injected hole should be deep to without the tiny fragments of stone, coal, etc. 5cm~100cm positions below track structure supporting course or base board concrete.

3. center line method for correcting error according to claim 1, it is characterised in that：The Grouting Pipe top has fast connector Directed flow is play a part of to slip-casting lifting material；Grouting Pipe bottom has stopping means, and Grouting Pipe can be fixed on without tiny fragments of stone, coal, etc. rail In the injected hole of road supporting course or base board concrete.

4. center line method for correcting error according to claim 1, it is characterised in that：The pushing tow point is arranged at the nothing of skew circuit Tiny fragments of stone, coal, etc. track structure side, wherein, pushing tow point is 1m~10m along the spacing of line direction.

5. center line method for correcting error according to claim 1, it is characterised in that：Described thrustor, by jack, power transmission Steelframe, power transmission steel plate, adjustment backing plate and counter-force pier composition.

6. the center line method for correcting error according to claim any one of 1-5, it is characterised in that：The slip-casting lifting material is tool There is dilatancy or without expansile fast hard material, operable time is 5s~600s, 1h compression strength reaches design strength More than 50%, shearing strength is 0.01 ~ 1 with compression strength ratio.

7. center line method for correcting error according to claim 6, it is characterised in that：The fast hard material is that organic rapid hardening is hard soon One kind in material polyurethane, polyureas, epoxy resin, vinylite and unsaturated polyester (UP) etc., or for inorganic rapid hardening is hard soon One kind in material waterglass-cement system, aluminium sulfate system, aluminate and phosphate system.

8. the center line method for correcting error according to claim any one of 1-5, it is characterised in that：The packing material is high polymer Injecting paste material or resin mortar.