CN101812819B - Whole construction process for double block type ballastless track - Google Patents
Whole construction process for double block type ballastless track Download PDFInfo
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- CN101812819B CN101812819B CN2010101592573A CN201010159257A CN101812819B CN 101812819 B CN101812819 B CN 101812819B CN 2010101592573 A CN2010101592573 A CN 2010101592573A CN 201010159257 A CN201010159257 A CN 201010159257A CN 101812819 B CN101812819 B CN 101812819B
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Abstract
The invention discloses a whole construction process for a double block type ballastless track and comprises the following steps: 1. construction preparation; 2. tunnel base smoothening and chiseling process; and 3. repeated cyclic construction of a ballastless track bed board by a track bent in a plurality of segments. As for each segment of the track bed board, the construction process is as follows: construction setting-out survey, binding and installing mesh reinforcement at the bottom layer, synchronous track assembling bent in the process of binding and installing mesh reinforcement sheets at the bottom layer, binding mesh reinforcement at the upper layer on the track bent, laying the track bent, coarsely adjusting the track bent, installing a track bed board molding board, finely adjusting the track bent and concrete construction of the track bed board; and then the steps are repeated to finish the construction of the following segments of the track bed board sequentially until the construction of the whole ballastless track bed board is finished. The construction steps have reasonable design and are simple and easy to implement, the construction is safe and reliable, the construction precision is high, the construction efficiency is high, the investment is low, and the constructed and molded double block type ballastless track has steady structure and good using effect.
Description
Technical field
The invention belongs to tunnel non-fragment orbit technical field of construction, especially relate to a kind of Whole construction process for double block type ballastless track.
Background technology
Non-fragment orbit is the advanced track technology in the world today, and its advantage is very obvious, is particularly suitable for the needs of Development of High Speed Railway, flourish along with the China railways Line for Passenger Transportation, and non-fragment orbit is constantly being applied, and growth momentum is swift and violent.
Should tunnel, ten thousand railways dragon unicorn palace be double track tunnel; Total length 3420m; Orbit Design is a CRTS I type double-block type ballastless track, length overall 3212.7m, and the track structure height is designed to 561mm; Main track is laid U75V, 60kg/m welds rail, Installation of W J-7A type fastener and the special-purpose double-block type sleeper (SK-1 type) of suitable ten thousand lines.5m long non-fragment orbit changeover portion and 20m are respectively established in import and export two ends, tunnel has tiny fragments of stone, coal, etc. changeover portion; Special-purpose sleeper and fastener are adopted in no tiny fragments of stone, coal, etc. changeover portion design; Have tiny fragments of stone, coal, etc. changeover portion to establish two 25m length, 50k/m auxiliary rails and be used to adjust orbit rigidity, auxiliary rail stretches into non-fragment orbit 5m.Dragon unicorn palace road, tunnel bed board design width 2.8m, thickness 0.3m, cast-in-place C40 steel concrete; Lay 1024 of 6.23m road bed boards altogether, 2 of 7.23m road bed boards, 2 of 5.48m road bed boards.And the non-fragment orbit construction technology is a new technology, and construction standard is high, and is high in technological content, requires construction precision high, especially in the tunnel, lays the non-fragment orbit, and its difficulty of construction is bigger.
Summary of the invention
Technical problem to be solved by this invention is to above-mentioned deficiency of the prior art; A kind of Whole construction process for double block type ballastless track is provided, and its construction sequence is reasonable in design, simple, construction safety is reliable, construction precision is high and efficiency of construction is high, small investment, difficulty of construction double-block type ballastless track structure low, institute's construction molding is firm and result of use good.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of Whole construction process for double block type ballastless track is characterized in that this technology may further comprise the steps:
301, construction lofting is measured: adopt conventional construction lofting method, on said road bed plate foundation face setting-out go out institute's construction road bed board sideline, the left and right sides, track centre and interior rail level and outside the Height control line of rail level;
302, colligation of bottom layer of the reinforcing steel net and installation: at first; Colligation bottom layer of the reinforcing steel net sheet outside the tunnel; Adopt hanging device that the bottom layer of the reinforcing steel net sheet of colligation moulding is lifted to construction tunnel again; And the sideline, the left and right sides of the institute's construction road bed board that goes out with reference to setting-out in the step 301 accomplishes the in place of said bottom layer of the reinforcing steel net sheet and installs, and just obtains the bottom layer of the reinforcing steel net that supplies institute's construction road bed board to install;
303, track framed bent assembling: in sheet colligation of bottom layer of the reinforcing steel net and installation process, carry out step 301 synchronously described in the assembling of many Pin track framed bent, every Pin track framed bent bottom evenly is laid with n row double-block type sleeper and n row double-block type sleeper and divides two to arrange and establish; Every Pin track framed bent comprises and parallelly is laid in two instrument rails on two described in the step 3011 row double-block type sleeper, evenly is laid in two instrument rail 2 outsides and be arranged in 3 built up frame on the same horizon, be installed in a plurality of vertical section of track supporting leg and a plurality of left and right sides wall of built up frame and lateral adjustments device between the cable channel sidewall of the set ditch of construction tunnel of being installed on respectively of below, the said built up frame left and right sides respectively from front to back; The length of said instrument rail is identical with the length of said road bed board calibrated bolck; Said vertical section of track supporting leg and lateral adjustments device are formed rail that the installation site of said track framed bent is accurately adjusted to lock, and said built up frame is for being the bilateral symmetry formula structure of line of symmetry with the center line between two instrument rails; Said built up frame comprises upper frame and the lower frame that is installed in said upper frame below, and said instrument rail and double-block type sleeper all are laid between said upper frame and the said lower frame; The assembling process of every Pin track framed bent may further comprise the steps:
3031, diffusing pillow: adopt hanging device that 2n root double-block type sleeper is hung on portable section of track assembly platform; Said portable section of track assembly platform comprises assembly platform, be installed in the walking mechanism of said assembly platform bottom and be laid in a plurality of even laying positioner of the said assembly platform left and right sides, and the spacing between adjacent two said positioners is identical with design pitch between adjacent two double-block type sleepers; Subsequently, utilize the said positioner that is provided with on the said portable section of track assembly platform that 2n root double-block type sleeper is carried out uniformly dispersing again, form two row's double-block type sleepers;
3032, assembling track framed bent: two instrument rails are fixedly mounted on two row's double-block type sleepers in elder generation and the instrument of assurance rail is vertical laying with the double-block type sleeper; Again 3 built up frame are installed on two instrument rails; In the said built up frame left and right sides vertical section of track supporting leg is installed respectively subsequently, is just accomplished the assembling of a Pin track framed bent;
3033, top mat is installed: the top mat colligation that will outside the tunnel, process moulding in advance is fixed on the track framed bent top that assembling is accomplished in the step 3032;
3034, constantly repeating step 3031-3033, the assembling of the framed bent of many Pin track described in the completing steps 301 successively;
304, the track framed bent is laid: it is online that the many Pin track framed bent that adopts hanging device that assembling in the step 307 is accomplished winches to the bottom layer of the reinforcing steel of installation in the step 302 one by one successively, and the laying of each Pin track framed bent of Height control line completion of the track centre that setting-out goes out in 301 set by step and interior rail level and outer rail level is just located;
305, track framed bent coarse adjustment: the Height control line of track centre that goes out with reference to setting-out in the step 301 and interior rail level and outer rail level; Adopt vertical section of track supporting leg and lateral adjustments device to carry out coarse adjustment one by one, and the contraposition of accomplishing one by one between the instrument rail in the adjacent two Pin track framed bents that coarse adjustment puts in place connect to accomplish laying just the installation site of many Pin track framed bent of location; In the coarse adjustment process, adopt vertical section of track supporting leg that the height and the levelness of said track framed bent are adjusted, adopt the lateral adjustments device to the center line of said track framed bent and rail to adjusting;
306, railway roadbed sheet metal forming template is installed: the sideline, the left and right sides of the institute's construction road bed board that goes out with reference to setting-out in the step 301, and the forming panel that is used for the construction road bed board of institute described in the forming step 301 is installed in many Pin track framed bent left and right sides that coarse adjustment puts in place in step 305 and end, front and back;
307, track framed bent accurate adjustment: the many Pin track framed bent that adopts total powerstation matching track detection dolly that coarse adjustment is put in place earlier carries out accurate adjustment respectively to be measured, and the deviate of each survey mark of respective record; Again according to the deviate of each survey mark that is write down, adopt the installation site of many Pin track framed bent that vertical section of track supporting leg and lateral adjustments device put in place to coarse adjustment to carry out accurate adjustment one by one;
308, railway roadbed is pulled concrete construction: utilize that the forming panel of installation carries out concrete pouring construction in the step 306, obtain to build a sections road bed board of moulding;
309, continuous repeating step 301-308 accomplishes follow-up each sections road bed board construction successively, accomplishes the integral construction process of double-block ballastless track bed board until construction.
When carrying out the double-block ballastless track bed board construction in the above-mentioned steps three, should construct to the construction tunnel two ends respectively from the construction tunnel middle part.
Built up frame described in the above-mentioned steps 303 is a rectangular frame; The structure of 3 built up frame is D with the spacing of size between all identical and adjacent two built up frame; 3 built up frame are followed successively by front side framework, middle part framework and rear side framework from front to back; Lateral length between the left part of the left part of front side framework and instrument rail is D/2, and the lateral length between the right part of the right part of rear side framework and instrument rail is D/2.
When carrying out coarse adjustment of track framed bent and the accurate adjustment of track framed bent in the above-mentioned steps 305 and 307; All adjust according to earlier internal height above rail surface; Externally the height above rail surface is adjusted again; Subsequently track centre is adjusted, the adjustment that last internal again height above rail surface, outer rail level elevation and track centre are checked is adjusted in proper order.
When carrying out the installation of railway roadbed sheet metal forming template in the above-mentioned steps 306; Said forming panel comprises that two are laid in the side form of many Pin track framed bent left and right sides that coarse adjustment puts in place respectively and are laid between adjacent two Pin track framed bents and are used for the end mould at moulding shrinkage joint; Said side form and end mould surround the railway roadbed sheet metal forming chamber of a sealing; Wherein lay in the sideline, the left and right sides of institute's construction road bed board of going out with reference to setting-out in the step 301 of two side forms, and the cross section of said end mould is up big and down small wedge structure.
Said vertical section of track supporting leg is for to be installed in the vertical bolt on the built up frame through thread connecting mode, and the left and right sides correspondence of built up frame has and supplies said vertical bolt to be installed in threaded mounting hole; When carrying out coarse adjustment of track framed bent and the accurate adjustment of track framed bent in the step 305 and 307, all adopt the bolt adjusting device that said vertical bolt is adjusted.
Said lateral adjustments device comprises that inner end holds out against the leading screw sleeve that is fixed on the wall of the built up frame left and right sides and coaxial package and is installed on level on the cable channel sidewall of said ditch in leading screw sleeve inner and outer end to leading screw.
Said level is fixing to being connected through holding pin between leading screw and leading screw sleeve; Said level has a pin-and-hole one that supplies said holding pin to install to the leading section correspondence of leading screw; The corresponding pin-and-hole two that is provided with the said holding pin installation of a plurality of confessions and is used on the leading screw sleeve with pin-and-hole one, and a plurality of pin-and-hole two is laid on the same horizon.
Hanging device described in above-mentioned steps 301, step 3031 and the step 304 is straddle truck.
The present invention compared with prior art has the following advantages:
1, construction sequence is reasonable in design and construction safety is reliable; Construction precision is high; The direct colligation of top mat is fixed on the track framed bent of assembled formation; Then the track framed bent is carried out handling and positioning in the lump together with top mat, bottom layer of the reinforcing steel net and all colligation moulding outside the tunnel in advance of top mat simultaneously, thereby increased substantially efficiency of construction.
2, construction control is simple and easy, and the double-block type ballastless track structure of construction molding is firm, and construction effect is good and quality is high, segregation, bleeding do not occur, and concrete compressive strength, durability index satisfy design and code requirement.
3, reasonable in design, construction sequence is simple, short construction period and easy to utilize.
4, the track bent structure is reasonable, and easy accessibility and laying are easy, the position is easy to adjust, specifically adopts vertical section of track supporting leg and lateral adjustments device to cooperate the track framed bent is adjusted, easy and simple to handle and adjustment precision height.
5, investment is little, and device therefor is few and constructing operation is easy, construction precision height and reliable results, and the job practices easy master is to first construction advantageous particularly.
In sum; Construction sequence of the present invention is reasonable in design, simple, construction safety is reliable, construction precision is high and efficiency of construction is high, construction period weak point, small investment, difficulty of construction are low, and the double-block type ballastless track structure of institute's construction molding is firm and result of use good.
Through accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description below.
Description of drawings
Fig. 1 is a construction flow chart of the present invention.
Fig. 2 constructs with the structural representation of track framed bent for the present invention.
Fig. 3 is the vertical view except that the track fishtail clamping plate among Fig. 2.
Fig. 4 is the user mode reference diagram of rail of the present invention to lock.
Fig. 5 is the structural representation of lateral adjustments device of the present invention.
Control point artwork when Fig. 6 carries out the construction lofting measurement for the present invention.
Description of reference numerals:
1-double-block type sleeper; 2-instrument rail; The 3-built up frame;
3-1-front side framework; 3-2-middle part framework; 3-3-rear side framework;
The vertical section of track supporting leg of 4-; 5-lateral adjustments device; 5-1-leading screw sleeve;
The 5-2-level is to leading screw; 5-3-pin-and-hole one; 5-4-pin-and-hole two;
6-track fishtail clamping plate; 7-road bed board side line.
The specific embodiment
A kind of Whole construction process for double block type ballastless track as shown in Figure 1 may further comprise the steps:
In the practice of construction process, also need the line midline and the construction tunnel center line of laying non-fragment orbit are carried out match, and tunnel cross-section is carried out repetition measurement, simultaneously the built-in fitting that is embedded in the tunnel substrate is in advance checked.
During practical operation; The tunnel substrate is carried out " high cutter is low to be mended " according to the height measurement result to the tunnel substrate and is handled; And after road bed plate foundation face is cut a hole the hair processing; The gross area of the fresh concrete face that is exposed must not be less than 50% of the whole area of bed plate foundation face, and rinses well with giant.
301, construction lofting is measured: adopt conventional construction lofting method, on said road bed plate foundation face setting-out go out institute's construction road bed board sideline, the left and right sides (being bed board side line 7), track centre and interior rail level and outside the Height control line of rail level.
In the present embodiment, when carrying out construction lofting, the coordinate that adopts resect that need are measured each control point carries out setting-out, and elevation adopts the triangulated height method to measure.Every Pin track framed bent is emitted 7 control points during for the accelerating construction progress construction lofting; And 7 control points comprise every Pin track framed bent corresponding one section road bed board four summits 1., 2., 3. and 4.; Track mid point 5. and interior height above rail surface point 6. with an outer rail level spot height 7., see Fig. 6 for details.
302, colligation of bottom layer of the reinforcing steel net and installation: at first; Colligation bottom layer of the reinforcing steel net sheet outside the tunnel; Adopt hanging device that the bottom layer of the reinforcing steel net sheet of colligation moulding is lifted to construction tunnel again; And the sideline, the left and right sides of the institute's construction road bed board that goes out with reference to setting-out in the step 301 accomplishes the in place of said bottom layer of the reinforcing steel net sheet and installs, and just obtains the bottom layer of the reinforcing steel net that supplies institute's construction road bed board to install.
During concrete colligation bottom layer of the reinforcing steel net sheet; Earlier use the bar cropper blanking according to design length; Weld spreading with flash butt welding again, bend moulding with angle-bender subsequently, and colligation becomes the net sheet on the corresponding special moulding bed; All crosspoint pad special isolation cards carry out colligation with special-purpose binding strap during colligation.At last, colligation moulding and passed examination bottom layer of the reinforcing steel net sheet are transported to the scope of operation, utilize the straddle truck hanging bed in place with flat car.In addition, when the bottom layer of the reinforcing steel net was installed, the concrete on employing and the base, tunnel propped up pad with the concrete pad of label, guarantees that thickness of concrete cover adheres to specification.
303, track framed bent assembling: in sheet colligation of bottom layer of the reinforcing steel net and installation process, carry out step 301 synchronously described in the assembling of many Pin track framed bent, every Pin track framed bent bottom evenly is laid with n row double-block type sleeper 1 and n row double-block type sleeper and arranged in 1 minute two and establish; Every Pin track framed bent comprises and parallelly is laid in two instrument rails 2 on two described in the step 3011 row double-block type sleeper 1, evenly is laid in two instrument rail 2 outsides and be arranged in 3 built up frame 3 on the same horizon, be installed in a plurality of vertical section of track supporting leg 4 and a plurality of left and right sides wall of built up frame 3 and lateral adjustments device 5 between the cable channel sidewall of the set ditch of construction tunnel of being installed on respectively of below, said built up frame 3 left and right sides respectively from front to back; The length of said instrument rail 2 is identical with the length of said road bed board calibrated bolck; Said vertical section of track supporting leg 4 and lateral adjustments device 5 are formed rail that the installation site of said track framed bent is accurately adjusted to lock, and said built up frame 3 is the bilateral symmetry formula structure of line of symmetry for the center line with 2 on two instrument rails; Said built up frame 3 comprises upper frame and the lower frame that is installed in said upper frame below; Said instrument rail 2 and double-block type sleeper 1 all are laid between said upper frame and the said lower frame; See Fig. 2, Fig. 3 and Fig. 4 for details; The inner end of said lateral adjustments device 5 is provided with concave shape and clamps part, and said lateral adjustments device 5 clamps part through concave shape and is installed on the built up frame 3; The assembling process of every Pin track framed bent may further comprise the steps:
3031, diffusing pillow: adopt hanging device that 2n root double-block type sleeper 1 is hung on portable section of track assembly platform; Said portable section of track assembly platform comprises assembly platform, be installed in the walking mechanism of said assembly platform bottom and be laid in a plurality of even laying positioner of the said assembly platform left and right sides, and the spacing between adjacent two said positioners is identical with the design pitch of 1 on adjacent two double-block type sleepers; Subsequently, utilize the said positioner that is provided with on the said portable section of track assembly platform that 2n root double-block type sleeper 1 is carried out uniformly dispersing again, form two row's double-block type sleepers 1.
In the present embodiment; Said built up frame 3 is a rectangular frame; The structure of 3 built up frame 3 is D with the spacing of 3 of all identical and adjacent two built up frame of size; 3 built up frame 3 are followed successively by front side framework 3-1, middle part framework 3-2 and rear side framework 3-3 from front to back, and the lateral length between the left part of front side framework 3-1 and the left part of instrument rail 2 is D/2, and the lateral length between the right part of rear side framework 3-3 and the right part of instrument rail 2 is D/2.
Said vertical section of track supporting leg 4 is for to be installed in the vertical bolt on the built up frame 3 through thread connecting mode, and the left and right sides correspondence of built up frame 3 has and supplies said vertical bolt to be installed in threaded mounting hole.As shown in Figure 5, said lateral adjustments device 5 comprise inner end hold out against the leading screw sleeve 5-1 that is fixed on built up frame 3 left and right sides walls and coaxial package in leading screw sleeve 5-1 inside and the outer end be installed on level on the cable channel sidewall of said ditch to leading screw 5-2.Said level is fixing to being connected through holding pin between leading screw 5-2 and leading screw sleeve 5-1; Said level has pin-and-hole one 5-3 who supplies said holding pin to install to the leading section correspondence of leading screw 5-2; Leading screw sleeve 5-1 goes up pin-and-hole two 5-4 that correspondence is provided with the said holding pin installation of a plurality of confessions and is used with pin-and-hole one 5-3, and a plurality of pin-and-hole two 5-4 are laid on the same horizon.Said rectangular frame is surrounded by many channel-section steels.During actual the use.The upper end flush of said lateral adjustments device 5 and built up frame 3.
In the present embodiment, the length of every Pin track framed bent is 6.25m, and promptly the length of instrument rail 2 is 6.25m and n=10, and the Pin number of the track of many Pin described in the step 301 framed bent is 10 Pin, and promptly the length of each sections road bed board of institute's construction molding is 62.5m.
Actual loosing when resting the head on operation; Adopt straddle truck with 20 double-block type sleeper 1 handlings and be placed on the said portable section of track assembly platform; Utilize tool ruler and said positioner by the artificial distribution operation of accomplishing 20 double-block type sleepers 1 of design pitch; 1 minute two row equidistantly is dispersed on the said portable section of track assembly platform with 20 double-block type sleepers, and the interval error that guarantees 1 on adjacent two double-block type sleepers is in ± 5mm.
3032, assembling track framed bent: two instrument rails 2 are fixedly mounted on two row's double-block type sleepers 1 in elder generation and the instrument of assurance rail 2 is vertical laying with double-block type sleeper 1; Again 3 built up frame 3 are installed on two instrument rails 2; In said built up frame 3 left and right sides vertical section of track supporting leg 4 is installed respectively subsequently, is just accomplished the assembling of a Pin track framed bent.
In the present embodiment, utilize straddle truck with two instrument rails 2, built up frame 3 and vertical section of track supporting leg 4 handling successively and be placed on the good double-block type sleeper 1 that looses, and assemble the track framed bent by the assembling sequence and the moment of torsion fastener for installing of the requirement of WJ-7A fastener.And the assembling of track framed bent should be specifically noted that the time: one, before the assembling of track framed bent to instrument rail 2, particularly to clean out the concrete of instrument rail 2 bottoms at rail support groove place; Two, unpunctual when the contraposition of track framed bent, can cause indivedual cross-over block dislocation, should carefully adjust this moment, and hammering is in place by force.All fix between said instrument rail 2 and the double-block type sleeper 1 and between two instrument rails 2 and the built up frame 3 through connecting bolt.
3033, top mat is installed: the top mat colligation that will outside the tunnel, process moulding in advance is fixed on the track framed bent top that assembling is accomplished in the step 3032.
3034, constantly repeating step 3031-3033, the assembling of the framed bent of many Pin track described in the completing steps 301 successively.
304, the track framed bent is laid: it is online that the many Pin track framed bent that adopts hanging device that assembling in the step 307 is accomplished winches to the bottom layer of the reinforcing steel of installation in the step 302 one by one successively, and the laying of each Pin track framed bent of Height control line completion of the track centre that setting-out goes out in 301 set by step and interior rail level and outer rail level is just located.
In the present embodiment; With straddle truck with the track framed bent that assembles according to numbering handling successively to on-the-spot, to gently carry during the straddle truck handling and putting down gently, in case cause the expendable plastic strain of track framed bent; In face of the track framed bent drops down onto bed plate foundation, should add the cover pvc pipe on the vertical section of track supporting leg 4; Simultaneously, adopt vertical section of track supporting leg 4 that spanner installed the framework 3-2 left and right sides, middle part upwards choosing screw out, in case the vertical section of track supporting leg of being installed on front side framework 3-1 and the rear side framework 3-3 when in place 4 is unsettled, and the corresponding downward modulation track framed bent that causes is difficult.
305, track framed bent coarse adjustment: the Height control line of track centre that goes out with reference to setting-out in the step 301 and interior rail level and outer rail level; Adopt 5 pairs of vertical section of track supporting leg 4 and lateral adjustments devices to accomplish the installation site of laying many Pin track framed bent of just locating and carry out coarse adjustment one by one; And the contraposition of accomplishing 2 on instrument rail in the adjacent two Pin track framed bents that coarse adjustment puts in place one by one connects, and specifically is just timely on request the track fishtail clamping plate 6 of order attachment rail framed bent rear and front end portion (specifically being mounted in the rear and front end portion of two instrument rails 2) of every completion one Pin track framed bent coarse adjustment; In the coarse adjustment process, adopt the height and the levelness of 4 pairs of said track framed bents of vertical section of track supporting leg to adjust, the center line of 5 pairs of said track framed bents of employing lateral adjustments device and rail are to adjusting.Said track fishtail clamping plate 6 is connected fixing with 2 on instrument rail through bolt.
When carrying out the coarse adjustment of track framed bent; Adjust according to earlier internal height above rail surface; Externally the height above rail surface is adjusted again; Subsequently track centre is adjusted, last more internally the adjustment of checking of height above rail surface, outer rail level elevation and track centre adjust in proper order, wherein the gauge of 2 on two instrument rails and 1: 40 the flange of rail gradient are that definite value need not adjusted.After the coarse adjustment of track framed bent puts in place, with the instrument rail 2 of current coarse adjustment in the Bit Track framed bent and last Pin the instrument rail 2 in the track framed bent of installation in position dock, and reach the joint and do not have faulting of slab ends, seam is tight.When track centre is adjusted, the center line control point of at first finding out orbit centre be the track mid point 5., utilize the center line control point through hanging plumb bob control, specifically adopt lateral adjustments device 5 to adjust.
Because the coarse adjustment precision of track framed bent directly influences the speed of accurate adjustment operation, the adjustment during for ease of accurate adjustment, the rail level height is by the principle control of " peaceful low not high " during the coarse adjustment of track framed bent.General coarse adjustment precision is: the track centre allowable variation is controlled at ± 3mm within, inside and outside height above rail surface allowable variation is controlled at ± 3mm within.
306, railway roadbed sheet metal forming template is installed: the sideline, the left and right sides of the institute's construction road bed board that goes out with reference to setting-out in the step 301, the forming panel that is used for the construction road bed board of institute described in the forming step 301 is installed in many Pin track framed bent left and right sides that coarse adjustment puts in place in step 305 and end, front and back.
When carrying out the installation of railway roadbed sheet metal forming template; Said forming panel comprises that two are laid in the side form of many Pin track framed bent left and right sides that coarse adjustment puts in place respectively and are laid between adjacent two Pin track framed bents and are used for the end mould at moulding shrinkage joint; Said side form and end mould surround the railway roadbed sheet metal forming chamber of a sealing; Wherein lay in the sideline, the left and right sides of institute's construction road bed board of going out with reference to setting-out in the step 301 of two side forms, and the cross section of said end mould is up big and down small wedge structure.
Side form is installed between back employing " L " type lateral support it is reinforced, and adopts the lumps of wood to be supported on the retaining Zha Qiang of cable channel simultaneously, and the lateral support spacing is not more than 100cm.The road bed board of being constructed is every to be provided with the shrinkage joint one at a distance from 6.25m; Stitch wide 2cm, templates for expansion joints (being said end mould) should be processed into up big and down small wedge structure, and the thick 2cm in said wedge structure upper end; The thick 1.2cm in bottom; Adopt the ground stud to reinforce, the top is propped up and is withstood on the double-block type sleeper 1, clogs sealing with the shrinkage joint of the mastic asphalt cementation of fissures after to the reservation moulding at last.
307, track framed bent accurate adjustment: the many Pin track framed bent that adopts total powerstation matching track detection dolly that coarse adjustment is put in place earlier carries out accurate adjustment respectively to be measured, and the deviate of each survey mark of respective record; According to the deviate of each survey mark that is write down, adopt the installation site of vertical section of track supporting leg 4 and 5 pairs of many Pin that coarse adjustment puts in place tracks of lateral adjustments device framed bent to carry out accurate adjustment one by one again.
After track framed bent coarse adjustment precision reaches requirement, detect dolly (specifically being GEDO CE orbit measurement system) pointwise carrying out in real time accurate adjustment with the total powerstation matching track and measure,, adjust according to the deviation size again with the deviate of accurate each survey mark of inspection.When carrying out the accurate adjustment of track framed bent; Adjust according to earlier internal height above rail surface; Externally the height above rail surface is adjusted again, subsequently track centre is adjusted, and the adjustment that last internal again height above rail surface, outer rail level elevation and track centre are checked is adjusted in proper order.The accurate adjustment first pass is adjusted with lateral adjustments device 5 vertical section of track supporting leg 4 earlier; Begin for second time double-block type sleeper 1 to be measured adjustment, will decide according to on-the-spot result, generally need three times the adjustment pass of double-block type sleeper 1 by root.Accurate adjustment will be noted the track framed bent is protected after accomplishing, and avoids collision orbit framed bent and support component thereof, and timely fluid concrete, and as not building for a long time, the time surpassed more than 4 hours, needed accurate adjustment again.
When the track framed bent was carried out coarse adjustment and accurate adjustment, a plurality of lateral adjustments device 5 symmetries were laid in built up frame 3 left and right sides that assembling is accomplished.
308, railway roadbed is pulled concrete construction: utilize that the forming panel of installation carries out concrete pouring construction in the step 306, obtain to build a sections road bed board of moulding.
During practice of construction, railway roadbed is pulled concrete construction and mainly may further comprise the steps:
The stirring of I, concrete and transportation: the concrete blending station must be joined automatic metering system; Strict control weighing precision stirs with forced mixer, will be according to the actual water content adjustment charger sheet of sandstone material before each opening quotation; What guarantee concrete mixes and stirs quality and construction workability, and slump is controlled at 16 ± 1cm.Concrete is transported to the scene with agitator truck, and the assigned address of moveing backward that turns around is sent into the storage bin hopper of concrete pump with chute, is pumped into mould.
II, concrete pump line are installed: the installation of concrete pump line can not influence other constructions of the scope of operation; Pump line can not contact with the track framed bent simultaneously; Avoid precision because of the vibration influence track framed bent in the concrete pumping process, thus field machining special pump line support, guarantee separating of pump line and framed bent.Pump line connects tight, and is wetting before using, and avoids plugging in the work, and the pump line discharging opening should not surpass 50cm from the distance of concrete face, not facing to track framed bent or double-block type sleeper 1, prevents that impact force from influencing track framed bent precision in place simultaneously.
III, track framed bent and fastener protection: cause pollution during the concrete construction easily to track framed bent, double-block type sleeper 1 and rail (instrument rail 2) fastener; Pollution to section of track instrument rail 2 can cause accurate adjustment distortion as a result; The pollution of contacting piece possibly cause the fastener damage; Influence workmanship and completion is delivered for a check, so should strengthen protection during the concrete construction track framed bent and fastener.Safeguard measure is at first to wrap up fastener with plastic sheeting, covers with bag of cement or geotextiles again, and secondly concrete is built cleaning in time after the completion of vibrating in the process, guarantees the cleaning of track framed bent and fastener.
IV, concrete are built: concrete is built by the order that draws near; Cloth is wanted evenly, and a substandard cloth is enough as far as possible, unnecessary material or owe material and should or replenish by manual work cleaning in time; Do not consign with vibrating head; Cloth should be forbidden from double-block type sleeper 1 both sides cloth simultaneously, and avoid the double-block type sleeper cavity to occur 1 time from a side one substandard cloth foot around double-block type sleeper 1.Vibrating of concrete will evenly be vibrated in order, and noting simultaneously can not the collision orbit framed bent, bottom layer of the reinforcing steel net or top mat, influences insulation effect in order to avoid influence track framed bent precision in place or the reinforcing bar edge insulator is come off.
V, concrete are received face: will in time receive face when concrete is built, receiving the face first pass mainly is the consumption according to absolute altitude control line control concrete, receives flat concrete face according to the design drainage grade; Guarantee that absolute altitude is accurately also roughly smooth; Second time receipts face mainly is to receive flat concrete faces comprehensively, pays special attention to guarantee not stay the dead angle below the corner and track framed bent of double-block type sleeper 1; The 3rd time the receipts face mainly is press polish, eliminates surperficial trowel impression and cellulor.It is accurate to reach the gradient at last, and absolute altitude is accurate, and surfacing is bright and clean.
After railway roadbed is pulled the concrete construction completion; And after treating that institute's fluid concrete intensity reaches more than the 5Mpa, then dismountable framed bent and forming panel are removed, and tear the track framed bent open after tearing side form earlier open; The dismounting of said end mould will be carried out along with the dismounting of track framed bent simultaneously; Before the concrete initial set, earlier gently carry the end mould at twice with straddle truck, on degree of raising 2～3cm, remove and mention the end mould with straddle truck again behind the track framed bent and be transported to the place ahead work plane.After the track framed bent was removed, the supporting leg bolt hole of leaving over adopted the shutoff of high strength non-shrink mortar.
Simultaneously, also need carry out concrete curing, maintenance method is before the track framed bent is removed, to use the atomizer spray maintenance, and the track framed bent is removed the back and covered the watering maintenance with geotextiles, and curing time is more than 14 days.Should guarantee between curing time that the concrete face is moistening at any time, avoid the concrete surface tiny contraction fissure to occur.
309, continuous repeating step 301-308 accomplishes follow-up each sections road bed board construction successively, accomplishes the integral construction process of double-block ballastless track bed board until construction.
In the present embodiment, when carrying out the double-block ballastless track bed board construction in the step 3, should construct to the construction tunnel two ends respectively from the construction tunnel middle part.When carrying out coarse adjustment of track framed bent and the accurate adjustment of track framed bent in the step 305 and 307, all adopt the bolt adjusting device that said vertical section of track supporting leg 4 is adjusted.
Simultaneously; Be noted that: bottom layer of the reinforcing steel net and top mat to being in place also need carry out insulation processing and integrated ground setting; Its comprehensive integrated ground is provided with mainly and comprises: 1) plate is constructed indirectly: in the position of designing requirement the stainless steel earth terminal being set with the corresponding every road bed board of a Pin track framed bent; After treating that the whole constructions of each sections road bed board (comprising 10 road bed boards) are accomplished, more adjacent two earth terminals between the adjacent two blocks of road bed board plates in the same cycling element (being each sections road bed board) are passed through stainless wirerope connection.Every road bed board is provided with an earth terminal on the two ends near the vertical ground connection reinforcing bar of abutment wall one side, the mouth of earth terminal is held up, and actinal surface exceeds railway roadbed board concrete face 5mm, and the centre distance between adjacent two earth terminals must not be greater than 40cm.2) unit ground connection construction: the vertical every 100m length of the road bed board of institute's construction molding is a ground unit, is connected with Through ground wire single-point " T " shape, and " T " shape connects the middle part that is arranged on ground unit, and the vertical ground connection reinforcing bar between adjacent two ground units is not communicated with.Afterwards, also need carry out Insulation test, Insulation test adopts the high resistant analyzer to measure, and any two reinforcing bars all must be tested.Insulation test carries out under the other Station Supervision of supervising engineer, and forms record.
In sum, above-mentioned double-block type ballastless track adopts the construction of track stack arrangement, the long 6.25m of the every Pin of track framed bent; Identical with road bed board calibrated bolck design length; Usefulness is fallen in track framed bent circulation during construction, and every circulation is with 10 Pin track framed bents (being 62.5m), and having bad luck with the cross-line straddle truck of track framed bent accomplished.
The main construction sequence of institute's employing track stack arrangement is: earlier joining special hanger with straddle truck hangs 10 double-block type sleepers 1 that every Pin track framed bent need use on section of track assembly platform, and manual work is scattered double-block type sleeper 1 by design pitch; Join special hanger rail fastening, colligation top reinforcement are installed on track section of track handling to the section of track assembly platform with straddle truck again; During this in the road bed board works area installing bottom layer steel mesh reinforcement; Treat that joining special hanger with straddle truck after the assembling of the track section of track is accomplished hangs assigned address to the track section of track that assembles; The track fishtail clamping plate 6 of in place and erecting tools rail 2 right ends portions reaches installation forming template after the linear design standard through coarse adjustment and accurate adjustment, pours into concrete after comprehensive passed examination.During practice of construction, all double-block type sleeper 1 prior disposable marching into the arena of required usefulness are deposited in the inner side of construction tunnel, press design quantity segmentation pile.
The above; It only is preferred embodiment of the present invention; Be not that the present invention is done any restriction, every technical spirit changes any simple modification, change and the equivalent structure that above embodiment did according to the present invention, all still belongs in the protection domain of technical scheme of the present invention.
Claims (9)
1. Whole construction process for double block type ballastless track is characterized in that this technology may further comprise the steps:
Step 1, preparation of construction, its preparation of construction work are included in the interior laying measurement of construction tunnel non-fragment orbit construction and the operation maintenance measurement is controlled net, the tunnel inwall is carried out the anti-seep water processing and settlement observation and assessment are carried out in the tunnel substrate with CPIII;
Step 2, the tunnel substrate is smooth and cutter hair is handled: according to the elevation designing requirement of tunnel substrate; Smooth processing is carried out in the tunnel substrate; The road bed plate foundation face that promptly supplies ballastless track bed board to lay to the tunnel substrate after smooth is simultaneously cut a hole hair and is handled, and cuts the laitance on the said road bed plate foundation face;
Step 3, double-block ballastless track bed board construction; Adopt the track framed bent and divide a plurality of sections the construction that repeatedly circulates of the ballastless track bed board of need construction; Each sections road bed board is formed by a plurality of roads bed board calibrated bolck that the corresponding construction of the many Pin track framed bent that is bolted together from front to back forms; The structure of many Pin track framed bent is all identical with size and for each sections road bed board, its work progress is following:
301, construction lofting is measured: adopt conventional construction lofting method, on said road bed plate foundation face setting-out go out institute's construction road bed board sideline, the left and right sides, track centre and interior rail level and outside the Height control line of rail level;
302, colligation of bottom layer of the reinforcing steel net and installation: at first; Colligation bottom layer of the reinforcing steel net sheet outside the tunnel; Adopt hanging device that the bottom layer of the reinforcing steel net sheet of colligation moulding is lifted to construction tunnel again; And the sideline, the left and right sides of the institute's construction road bed board that goes out with reference to setting-out in the step 301 accomplishes the in place of said bottom layer of the reinforcing steel net sheet and installs, and just obtains the bottom layer of the reinforcing steel net that supplies institute's construction road bed board to install;
303, track framed bent assembling: in sheet colligation of bottom layer of the reinforcing steel net and installation process; Carry out the assembling of the framed bent of many Pin track described in the step 3 synchronously; Every Pin track framed bent bottom evenly is laid with n row double-block type sleeper (1), and n row double-block type sleeper (1) divides two to arrange and establish; Every Pin track framed bent comprise parallel be laid in described in this step divide two arrange two instrument rails (2) on the double-block type sleeper of establishing (1), evenly be laid in two instrument rails (2) outside and be arranged in 3 built up frame (3) on the same horizon, be installed in a plurality of vertical section of track supporting leg (4) and a plurality of left and right sides wall of built up frame (3) and lateral adjustments device (5) between the cable channel sidewall of the set ditch of construction tunnel of being installed on respectively of below, said built up frame (3) left and right sides respectively from front to back; The length of said instrument rail (2) is identical with the length of said road bed board calibrated bolck; Said vertical section of track supporting leg (4) and lateral adjustments device (5) are formed rail that the installation site of said track framed bent is accurately adjusted to lock, and said built up frame (3) is for being the bilateral symmetry formula structure of line of symmetry with the center line between two instrument rails (2); Said built up frame (3) comprises upper frame and the lower frame that is installed in said upper frame below, and said instrument rail (2) and double-block type sleeper (1) all are laid between said upper frame and the said lower frame; The assembling process of every Pin track framed bent may further comprise the steps:
3031, diffusing pillow: adopt hanging device that 2n root double-block type sleeper (1) is hung on portable section of track assembly platform; Said portable section of track assembly platform comprises assembly platform, be installed in the walking mechanism of said assembly platform bottom and be laid in a plurality of even laying positioner of the said assembly platform left and right sides, and the spacing between adjacent two said positioners is identical with design pitch between adjacent two double-block type sleepers (1); Subsequently, utilize the said positioner that is provided with on the said portable section of track assembly platform that 2n root double-block type sleeper (1) is carried out uniformly dispersing again, form two row's double-block type sleepers (1);
3032, assembling track framed bent: earlier two instrument rails (2) are fixedly mounted on two row's double-block type sleepers (1) and guarantee that instrument rail (2) is vertical laying with double-block type sleeper (1); Again 3 built up frame (3) are installed on two instrument rails (2); In said built up frame (3) left and right sides vertical section of track supporting leg (4) is installed respectively subsequently, is just accomplished the assembling of a Pin track framed bent;
3033, top mat is installed: the top mat colligation that will outside the tunnel, process moulding in advance is fixed on the track framed bent top that assembling is accomplished in the step 3032;
3034, constantly repeating step 3031-3033, the assembling of the framed bent of many Pin track described in the completing steps three successively;
304, the track framed bent is laid: it is online that the many Pin track framed bent that adopts hanging device that assembling in the step 3034 is accomplished winches to the bottom layer of the reinforcing steel of installation in the step 302 one by one successively, and the laying of each Pin track framed bent of Height control line completion of the track centre that setting-out goes out in 301 set by step and interior rail level and outer rail level is just located;
305, track framed bent coarse adjustment: the Height control line of track centre that goes out with reference to setting-out in the step 301 and interior rail level and outer rail level; Adopt vertical section of track supporting leg (4) and lateral adjustments device (5) to carry out coarse adjustment one by one, and the contraposition of accomplishing one by one between the instrument rail (2) in the adjacent two Pin track framed bents that coarse adjustment puts in place connect to accomplish laying just the installation site of many Pin track framed bent of location; In the coarse adjustment process, adopt vertical section of track supporting leg (4) that the height and the levelness of said track framed bent are adjusted, adopt lateral adjustments device (5) to the center line of said track framed bent and rail to adjusting;
306, railway roadbed sheet metal forming template is installed: the sideline, the left and right sides of the institute's construction road bed board that goes out with reference to setting-out in the step 301, and the forming panel that is used for the construction road bed board of institute described in the forming step 301 is installed in many Pin track framed bent left and right sides that coarse adjustment puts in place in step 305 and end, front and back;
307, track framed bent accurate adjustment: the many Pin track framed bent that adopts total powerstation matching track detection dolly that coarse adjustment is put in place earlier carries out accurate adjustment respectively to be measured, and the deviate of each survey mark of respective record; Again according to the deviate of each survey mark that is write down, adopt the installation site of many Pin track framed bent that vertical section of track supporting leg (4) and lateral adjustments device (5) put in place to coarse adjustment to carry out accurate adjustment one by one;
308, railway roadbed board concrete construction: utilize the forming panel of installation in the step 306 to carry out concrete pouring construction, obtain to build a sections road bed board of moulding;
309, continuous repeating step 301-308 accomplishes follow-up each sections road bed board construction successively, accomplishes the integral construction process of double-block ballastless track bed board until construction.
2. according to the described Whole construction process for double block type ballastless track of claim 1, it is characterized in that: when carrying out the double-block ballastless track bed board construction in the step 3, should construct to the construction tunnel two ends respectively from the construction tunnel middle part.
3. according to claim 1 or 2 described Whole construction process for double block type ballastless track; It is characterized in that: the built up frame described in the step 303 (3) is a rectangular frame; Spacing between the structure of 3 built up frame (3) and adjacent two built up frame (3) all identical with size is D; 3 built up frame (3) are followed successively by front side framework (3-1), middle part framework (3-2) and rear side framework (3-3) from front to back; Lateral length between the left part of the left part of front side framework (3-1) and instrument rail (2) is D/2, and the lateral length between the right part of the right part of rear side framework (3-3) and instrument rail (2) is D/2.
4. according to claim 1 or 2 described Whole construction process for double block type ballastless track; It is characterized in that: when carrying out coarse adjustment of track framed bent and the accurate adjustment of track framed bent in the step 305 and 307; All adjust according to earlier internal height above rail surface; Externally the height above rail surface is adjusted again, subsequently track centre is adjusted, and the adjustment that last internal again height above rail surface, outer rail level elevation and track centre are checked is adjusted in proper order.
5. according to claim 1 or 2 described Whole construction process for double block type ballastless track; It is characterized in that: when carrying out the installation of railway roadbed sheet metal forming template in the step 306; Said forming panel comprises that two are laid in the side form of many Pin track framed bent left and right sides that coarse adjustment puts in place respectively and are laid between adjacent two Pin track framed bents and are used for the end mould at moulding shrinkage joint; Said side form and end mould surround the railway roadbed sheet metal forming chamber of a sealing; Wherein lay in the sideline, the left and right sides of institute's construction road bed board of going out with reference to setting-out in the step 301 of two side forms, and the cross section of said end mould is up big and down small wedge structure.
6. according to claim 1 or 2 described Whole construction process for double block type ballastless track; It is characterized in that: said vertical section of track supporting leg (4) is for to be installed in the vertical bolt on the built up frame (3) through thread connecting mode, and the left and right sides correspondence of built up frame (3) has the threaded mounting hole that supplies said vertical bolt to install; When carrying out coarse adjustment of track framed bent and the accurate adjustment of track framed bent in the step 305 and 307, all adopt the bolt adjusting device that said vertical bolt is adjusted.
7. according to the described Whole construction process for double block type ballastless track of claim 6, it is characterized in that: said lateral adjustments device (5) comprise inner end hold out against the leading screw sleeve (5-1) that is fixed on the wall of built up frame (3) left and right sides and coaxial package in leading screw sleeve (5-1) inside and the outer end be installed on level on the cable channel sidewall of said ditch to leading screw (5-2).
8. according to the described Whole construction process for double block type ballastless track of claim 7; It is characterized in that: said level is fixing to being connected through holding pin between leading screw (5-2) and leading screw sleeve (5-1); Said level has a pin-and-hole one (5-3) that supplies said holding pin to install to the leading section correspondence of leading screw (5-2); Leading screw sleeve (5-1) is gone up the pin-and-hole two (5-4) that correspondence is provided with the said holding pin installation of a plurality of confessions and is used with pin-and-hole one (5-3), and a plurality of pin-and-hole two (5-4) is laid on the same horizon.
9. according to claim 1 or 2 described Whole construction process for double block type ballastless track, it is characterized in that: the hanging device described in step 302, step 3031 and the step 304 is straddle truck.
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| CN103266544B (en) * | 2013-06-09 | 2014-12-17 | 中铁六局集团天津铁路建设有限公司 | Combined construction method of monolithic track bed and track of locomotive washing warehouse |
| CN103643968B (en) * | 2013-12-10 | 2015-11-04 | 中铁二十三局集团第一工程有限公司 | Method for rapid construction of double-track tunnel ditch cable channel |
| CN104264546B (en) * | 2014-09-11 | 2016-04-06 | 中铁六局集团呼和浩特铁路建设有限公司 | A kind of fine adjusting method of the double-block type ballastless track construction section of track |
| CN104775340B (en) * | 2015-03-24 | 2016-09-14 | 中交一航局第四工程有限公司 | Block type ballastless track two-wire construction technology is flexibly supported in tunnel |
| CN104863025B (en) * | 2015-03-30 | 2017-01-18 | 北京城建设计发展集团股份有限公司 | Construction method of greening monolithic track-bed for tramcars |
| CN105274912B (en) * | 2015-03-30 | 2017-01-18 | 北京城建设计发展集团股份有限公司 | Construction method for hardening monolithic track bed of tramcar |
| CN104947554B (en) * | 2015-07-02 | 2017-01-18 | 中铁上海工程局集团有限公司 | Urban railway curved section track panel preparing method |
| CN105200869B (en) * | 2015-09-02 | 2017-01-18 | 成都市新筑路桥机械股份有限公司 | Method for quickly constructing embedded rail system from top to bottom |
| CN107128656B (en) * | 2017-06-26 | 2023-09-08 | 中铁十六局集团第三工程有限公司 | CRTS I type double-block ballastless track sealing layer construction material transportation structure |
| CN109338830B (en) * | 2018-08-31 | 2023-11-21 | 中铁上海工程局集团有限公司 | Rail-state rail-adjusting supporting frame capable of being installed and dismounted rapidly under all working conditions |
| CN110541332A (en) * | 2019-08-14 | 2019-12-06 | 中铁六局集团有限公司 | construction method of railway integral ballast bed in narrow tunnel |
| CN111877062B (en) * | 2020-08-18 | 2022-02-18 | 中铁二十局集团有限公司 | Ballastless track universal template system and construction method thereof |
| CN113832790B (en) * | 2021-09-10 | 2023-07-25 | 中铁第五勘察设计院集团有限公司 | Pillow separating device |
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| US20060131437A1 (en) * | 2004-12-21 | 2006-06-22 | General Electric Company | Load bearing structure and method of manufacture thereof |
| CN101215812B (en) * | 2007-12-27 | 2011-05-25 | 中铁二局股份有限公司 | Construction method for passenger transport dedicated line bolster embedded large-size ballastless track |
| CN101413236B (en) * | 2008-09-26 | 2011-04-06 | 中铁十二局集团第二工程有限公司 | CRTS II type double-block type non-fragment rail bed board construction method |
| CN101503870B (en) * | 2008-12-03 | 2011-10-05 | 中铁八局集团第一工程有限公司 | Construction method for two-block unballasted track bed board |
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