CN101725097A - Method for constructing expansion joints of foundation in plate type ballastless track and templates for expansion joints - Google Patents
Method for constructing expansion joints of foundation in plate type ballastless track and templates for expansion joints Download PDFInfo
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- CN101725097A CN101725097A CN200910191696A CN200910191696A CN101725097A CN 101725097 A CN101725097 A CN 101725097A CN 200910191696 A CN200910191696 A CN 200910191696A CN 200910191696 A CN200910191696 A CN 200910191696A CN 101725097 A CN101725097 A CN 101725097A
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Abstract
The invention discloses templates for expansion joints of a foundation in a plate type ballastless track. A second-layer template is positioned between a first-layer template and a third-layer template and keeps a distance from both the first-layer template and the third-layer template; the first-layer template and the second-layer template are similar and are both a vertical steel plate which is high on the left, low on the right and provided with a steel plate bent in a running direction in the middle, the lower part of the vertical steel plate is provided with notches, and the upper part of the vertical steel plate is connected with ear plates; and the second-layer template consists of three sections of vertical steel plates which are high on the right, low on the right and disconnected, the middle section is a steel plate bent in the running direction, the left and right sections are flat steel plates, the lower parts of the three sections of vertical steel plates are provided with notches and the upper parts of the three sections of vertical steel plates are connected with ear plates. The invention also discloses a method for constructing the expansion joints of the foundation in the plate type ballastless track. The method contributes to the realization of streamlined construction operation, improves construction efficiency, realizes the accurate control over water drainage counter slopes on two sides of the foundation and ensures the height smoothness of a top face of the foundation.
Description
Technical field
The present invention relates to the non-fragment orbit job practices, be specifically related to a kind of job practices and templates for expansion joints of plate-type ballastless track expansion joints of foundation.
Background technology
Traditional railroad track is made up of railway roadbed, sleeper, rail, connector etc.Directly the sleeper of supporting rail is a treated sleeper often, is embedded in the stone tiny fragments of stone, coal, etc., and its effect is that load is spread on roadbed.In recent years, for the needs of adaline vehicle speed increase, released plate-type ballastless track.Plate-type ballastless track by gapless rail, elasticity separated rail fastening, fill-type backing plate, track plate, cement emulsified asphalt mortar, concrete bed, convex retaining platform and on every side filled polyurethane resin etc. form.Because the rigidity of each layer is successively decreased from top to bottom successively, so the job practices of each layer all has different difficult points and requirement, and higher equally to the required precision of base.
The situation of the plate-type ballastless track of having finished with regard to having constructed is both at home and abroad at present summed up, and the easiest common quality defect that occurs of CRTS-I template formula non-fragment orbit has: 1. foundation distortion; 2. the variation differential settlement of changeover portion rigidity directly causes track height, direction, gauge inconsistent between earthwork engineering and the civil engineering (being subgrade construction and bridge tunneling).In order to address these problems, there is people every expansion joints of foundation place in the roadbed location in design that 8 dowel bars are set, dowel bar is the plain bar of diameter 38mm; Curve location dowel bar is arranged at the middle part of base cross section.Though this design has solved the influence of roadbed location differential settlement to non-fragment orbit, has brought certain degree of difficulty to construction.
Summary of the invention
The purpose of this invention is to provide a kind of method of plate-type ballastless track expansion joints of foundation construction, the frock system that this method needs is simple, is easy to processing and manufacturing, and can realizes the accurate location of dowel bar, can make things convenient for two gradients controlling base top surface exactly; Construction sequence is simple and direct, is easy to the streamlined operation; Can save construction investment, improve construction efficiency, have versatility widely.
The present invention also provides a kind of plate-type ballastless track expansion joints of foundation template, can make the demoulding smoothly behind the both sides symmetries fluid concrete, and stay shrinkage joint linear attractive in appearance.
A kind of plate-type ballastless track expansion joints of foundation template of the present invention is made up of three layers of template, and second layer template and maintains spacing mutually between first floor template and the 3rd layer of template, it is characterized in that:
The first floor template is similar with the 3rd layer of template, is high right low and middle part, the left side of a setting and is provided with steel plate to the direction of traffic bending, and the bottom of this settings steel plate is provided with a plurality of gap, the tops of " U " type and is connected with a plurality of otic placodes;
Second layer template is made up of the left high right low and steel plate that be interrupted of three sections settings, its interlude be to the steel plate of direction of traffic bending, about two sections for smooth steel plate, three sections bottoms of erectting steel plates are respectively equipped with two gap, tops of falling " U " type at least and are connected with two otic placodes at least.
Templates for expansion joints is made up of three layers of template, for upwards extracting second layer template earlier, stays the disengaging that activity space is beneficial to first floor template and the 3rd layer of template during the demoulding.At the welding otic placode of each layer or each section, its role is to penetrate screw rod to connect template or to propose template.The interlude of second layer template with about two intersegmental disconnected, and gapped, can play regulating action and economical with materials like this.
Described a kind of plate-type ballastless track expansion joints of foundation template is characterized in that: the otic placode that is connected second layer template top is higher than the otic placode that connects first floor template and the 3rd layer of template top, is provided with 3 otic placodes on the interlude top of second layer template.Its effect is to be convenient to extract interlude when the demoulding in advance.
The job practices that the purpose of this invention is to provide a kind of plate-type ballastless track expansion joints of foundation, its step is as follows:
The first step, work plane cleaning: scum silica frost, dust and the foreign material of removing substructure (generally the being graded broken stone) surface in the base scope;
In second step, the construction line-putting: utilizing total powerstation freely to establish the station method, is benchmark with the CPIII coordinate system, and setting-out accurately goes out the shrinkage joint design attitude; The base vertical control point is arranged on the limit mould at expansion joints of foundation place, adopts electronic level to measure the actual elevation of templates for expansion joints two ends basal surface;
The 3rd step, prop up upright templates for expansion joints: first floor template, second layer template and the 3rd layer of template group merging of templates for expansion joints of the present invention are fixed on the shrinkage joint design attitude, the templates for expansion joints end face is adjusted to design elevation, the mortar shutoff is used in the bottom, and on the second layer template of templates for expansion joints coating butter so that the demoulding is smooth;
The 4th step, upright base limit mould: because of the shrinkage joint model fixing after, the position of base limit mould is respective fixation also, base Bian Mozhili props up according to the templates for expansion joints backguy immediately can;
In the 5th step, dowel bar is installed:,, be fixed on the base reinforcing bar with iron wire after the adjusting dowel bar direction and get final product so only need the dowel bar that blanking is good to be installed in the gap position of " U " type that falls of templates for expansion joints because of the position of dowel bar determines in the model of shrinkage joint; The gap slit of the bottom of dowel bar adopts the polyethylene foams plate to carry out shutoff, need not after the shutoff to remove;
The 6th step, cast seat concrete: note in the seat concrete casting process pouring into a mould in the shrinkage joint bilateral symmetry as far as possible, and prevent that mortar from entering model inside, shrinkage joint; The top of concrete levelling can be according to the end face hanging wire operation of shrinkage joint model;
The 7th step, the demoulding: behind the concrete initial set templates for expansion joints is made a movement slightly, begin the demoulding when reaching 15% left and right sides of design strength, the demoulding proposes the second layer template of templates for expansion joints of the present invention earlier with the 2T bottle gouard moved by hands, all the other two templates are knocked in the middle of the shrinkage joint gently, peeling off behind the concrete is that available bottle gouard moved by hands upwards proposes smoothly again;
In the 8th step, embed expanded joint material; The expanded joint material that adopts is polyethylene foams plate or pitch fibers plate, and two kinds of materials all can be made into required shape easily, and can embed easily in the seam that stays after the demoulding.
Beneficial effect of the present invention:
(1) solves the method that a kind of plate-type ballastless track base is constructed, be more conducive to form the streamlined construction operation, improved construction efficiency;
(2) at roadbed section differential settlement, the various built-in fittings that design in base can be realized accurately location and construction easily;
(3) realized accurate control base both sides draining counter-slope, having overcome in the past in the construction base draining counter-slope, to receive face random big, do not reach the common fault of designing requirement;
(4) because of the mismachining tolerance of shrinkage joint model and deflection fully less than the allowable error of base width, so need not base limit mould is disconnected at the place, shrinkage joint.Only the shrinkage joint accurately need be located during construction, base limit mould according to shrinkage joint model backguy prop up immediately can, improve construction efficiency;
(5) by controlling base limit mould elevation of top surface, effectively avoided the faulting of slab ends between adjacent pans, guaranteed the ride comfort of base top surface elevation at the absolute altitude control point at two ends, place, shrinkage joint.
Description of drawings
Fig. 1 is the structural representation of templates for expansion joints first floor template.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the structural representation of templates for expansion joints second layer template.
Fig. 4 is the vertical view of Fig. 3.
Fig. 5 is the structural representation of the 3rd layer of template of templates for expansion joints.
Fig. 6 be Fig. 5 vertical view.
Fig. 7 is the elevational schematic view of templates for expansion joints (three layers).
Fig. 8 is the vertical view of Fig. 7.
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing.
Referring to Fig. 1 to a kind of plate-type ballastless track expansion joints of foundation template shown in Figure 8, form by three layers of template, second layer template 2 is between first floor template 1 and the 3rd layer of template 3, and maintain spacing mutually, the first floor template is similar with the 3rd layer of template, be high right low and middle part, the left side of a setting and be provided with steel plate to the direction of traffic bending, the bottom of this settings steel plate is provided with a plurality of gap 4, the tops of " U " type and is connected with a plurality of otic placodes 5;
The otic placode that is connected second layer template top is higher than the otic placode that connects first floor template and the 3rd layer of template top, is provided with 3 otic placodes on the interlude top of second layer template.Its effect is to be convenient to extract interlude when the demoulding in advance.
The job practices of a kind of plate-type ballastless track expansion joints of foundation of the present invention, its step is as follows:
The first step, work plane cleaning: scum silica frost, dust and the foreign material of removing substructure (generally the being graded broken stone) surface in the base scope;
In second step, the construction line-putting: utilizing total powerstation freely to establish the station method, is benchmark with the CPIII coordinate system, and setting-out accurately goes out the position, shrinkage joint; The base vertical control point is arranged on the limit mould at expansion joints of foundation place, adopts electronic level to measure the actual elevation of templates for expansion joints two ends basal surface;
The 3rd step, prop up upright templates for expansion joints: first floor template 1, second layer template 2 and the 3rd layer of template 3 of templates for expansion joints of the present invention are fixed on non-fragment orbit expansion joints of foundation position, the templates for expansion joints end face is adjusted to design elevation, the mortar shutoff is used in the bottom, and on the second layer template 2 of templates for expansion joints coating butter so that the demoulding is smooth;
The 4th step, upright base limit mould: because of the shrinkage joint model fixing after, the position of base limit mould is respective fixation also, base Bian Mozhili props up according to the templates for expansion joints backguy immediately can;
The 5th step, dowel bar is installed: because of the position of dowel bar determines in the model of shrinkage joint, so only need the dowel bar 6 that blanking is good to be installed in gap 4 positions of " U " type that falls of templates for expansion joints, regulate after the dowel bar direction to be fixed on the base reinforcing bar getting final product with iron wire; The gap slit of the bottom of dowel bar adopts the polyethylene foams plate to carry out shutoff, need not after the shutoff to remove;
The 6th step, cast seat concrete: note in the seat concrete casting process pouring into a mould in the shrinkage joint bilateral symmetry as far as possible, and prevent that mortar from entering model inside, shrinkage joint; The top of concrete levelling can be according to the end face hanging wire operation of shrinkage joint model;
The 7th step, the demoulding: behind the concrete initial set templates for expansion joints is made a movement slightly, begin the demoulding when reaching 15% left and right sides of design strength, the demoulding proposes the second layer template of templates for expansion joints of the present invention earlier with the 2T bottle gouard moved by hands, all the other two templates are knocked in the middle of the shrinkage joint gently, peeling off behind the concrete is that available bottle gouard moved by hands upwards proposes smoothly again;
In the 8th step, embed expanded joint material; The expanded joint material that adopts is polyethylene foams plate or pitch fibers plate, and two kinds of materials all can be made into required shape easily, and can embed easily in the seam that stays after the demoulding.
Claims (3)
1. a plate-type ballastless track expansion joints of foundation template is made up of three layers of template, and second layer template (2) is positioned between first floor template (1) and the 3rd layer of template (3), and maintains spacing mutually, it is characterized in that:
First floor template (1) is similar with the 3rd layer of template (3), is high right low and middle part, the left side of a setting and is provided with steel plate to the direction of traffic bending, and the bottom of this settings steel plate is provided with a plurality of gap (4), the tops of " U " type and is connected with a plurality of otic placodes (5);
Second layer template (2) is made up of the left high right low and steel plate that be interrupted of three sections settings, its interlude be to the steel plate of direction of traffic bending, about two sections for smooth steel plate, three sections bottoms of erectting steel plates are respectively equipped with two gap (4), tops of falling " U " type at least and are connected with two otic placodes (5) at least.
2. a kind of plate-type ballastless track expansion joints of foundation template according to claim 1, it is characterized in that: the otic placode that is connected second layer template top is higher than the otic placode that connects first floor template and the 3rd layer of template top, is provided with 3 otic placodes on the interlude top of second layer template.
3. the job practices of a plate-type ballastless track expansion joints of foundation, its step is as follows:
The first step, work plane cleaning: scum silica frost, dust and the foreign material of removing the substructure surface in the base scope;
In second step, the construction line-putting: utilizing total powerstation freely to establish the station method, is benchmark with the CPIII coordinate system, and setting-out accurately goes out the position, shrinkage joint; The base vertical control point is arranged on the limit mould at expansion joints of foundation place, adopts electronic level to measure the actual elevation of templates for expansion joints two ends basal surface;
The 3rd step, prop up upright templates for expansion joints: first floor template (1), second layer template (2) and the 3rd layer of template (3) of a kind of plate-type ballastless track expansion joints of foundation template of the present invention are fixed on non-fragment orbit expansion joints of foundation position, the templates for expansion joints end face is adjusted to design elevation, the mortar shutoff is used in the bottom, and goes up coating butter in the second layer template (2) of templates for expansion joints;
The 4th step, upright base limit mould: because of the shrinkage joint model fixing after, the position of base limit mould is respective fixation also, base Bian Mozhili props up according to the templates for expansion joints backguy immediately can;
The 5th step, dowel bar is installed: because of the position of dowel bar determines in the model of shrinkage joint, so only need the dowel bar (6) that blanking is good to be installed in gap (4) position of " U " type that falls of templates for expansion joints, regulate after the dowel bar direction to be fixed on the base reinforcing bar getting final product with iron wire; The gap slit of the bottom of dowel bar adopts the polyethylene foams plate to carry out shutoff, need not after the shutoff to remove;
The 6th step, cast seat concrete: note in the seat concrete casting process pouring into a mould in the shrinkage joint bilateral symmetry as far as possible, and prevent that mortar from entering model inside, shrinkage joint; The top of concrete levelling can be according to the end face hanging wire operation of shrinkage joint model;
The 7th step, the demoulding: behind the concrete initial set templates for expansion joints is made a movement slightly, begin the demoulding when reaching 15% left and right sides of design strength, the demoulding proposes the second layer template of templates for expansion joints of the present invention earlier with bottle gouard moved by hands, all the other two templates are knocked in the middle of the shrinkage joint gently, peeling off behind the concrete is that available bottle gouard moved by hands upwards proposes smoothly again;
In the 8th step, embed expanded joint material; The expanded joint material that adopts is polyethylene foams plate or pitch fibers plate, and two kinds of materials all can be made into required shape easily, and can embed easily in the seam that stays after the demoulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910191696XA CN101725097B (en) | 2009-12-02 | 2009-12-02 | Method for constructing expansion joints of foundation in plate type ballastless track and templates for expansion joints |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910191696XA CN101725097B (en) | 2009-12-02 | 2009-12-02 | Method for constructing expansion joints of foundation in plate type ballastless track and templates for expansion joints |
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| CN101725097A true CN101725097A (en) | 2010-06-09 |
| CN101725097B CN101725097B (en) | 2012-01-04 |
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Cited By (8)
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| CN102031872A (en) * | 2010-11-12 | 2011-04-27 | 中国二十二冶集团有限公司 | Water-blocking mould at doorway of ground heating toilet and method for blocking water by using water-blocking mould |
| CN102322023A (en) * | 2011-06-21 | 2012-01-18 | 中铁十九局集团第二工程有限公司 | Protection wall construction method with three layers of steel boards serving as breaking joint board |
| CN102758388A (en) * | 2012-07-06 | 2012-10-31 | 中铁十七局集团第二工程有限公司 | Module device for transverse expansion and contraction joint of double-block type ballastless track and construction method |
| CN105067436A (en) * | 2015-08-14 | 2015-11-18 | 山西省交通科学研究院 | Multi-axial fatigue fracture test equipment for bridge expansion joint material and implementation method of multi-axial fatigue fracture test equipment |
| CN106049205A (en) * | 2016-08-04 | 2016-10-26 | 中铁十七局集团第三工程有限公司 | Formwork for ballast-less track base casting |
| CN106638183A (en) * | 2016-10-26 | 2017-05-10 | 中铁五局集团有限公司 | Urban rail transit assembly board type high precision rail base cast-in-place construction method |
| CN106906711A (en) * | 2017-04-27 | 2017-06-30 | 皇玉彬 | A kind of concrete slab and preparation method thereof |
| CN108625244A (en) * | 2018-06-26 | 2018-10-09 | 中建五局土木工程有限公司 | A kind of roadbed composite structure and its construction method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| IT1176498B (en) * | 1984-07-27 | 1987-08-18 | I P A Ind Prefabbricati Affini | COMPONENTS FOR RAILWAY LINES ON REINFORCED CONCRETE PLATES, WITHOUT MASS |
| ATA72787A (en) * | 1987-03-25 | 1992-11-15 | Heinzle Otto | JOINT SHUTDOWN |
| DE102004019275B4 (en) * | 2004-04-21 | 2006-09-07 | Pfleiderer Infrastrukturtechnik Gmbh & Co. Kg | System formwork for transverse joints on fixed carriageways |
| NL1030145C2 (en) * | 2005-10-07 | 2007-04-11 | Konink Bam Groep Nv | Concrete slab casting method for ballastless track using shuttering, has cross direction shuttering formed by end parts secured to cross ties on either side of track |
| CN101270568B (en) * | 2007-11-06 | 2010-11-17 | 铁道第四勘察设计院 | Rail plate technique for resolving rail bridge connection of crossbeam seam section |
| CN201161437Y (en) * | 2007-12-13 | 2008-12-10 | 中国中铁股份有限公司 | Bearing platform type rail board mold |
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2009
- 2009-12-02 CN CN200910191696XA patent/CN101725097B/en not_active Expired - Fee Related
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| CN102031872A (en) * | 2010-11-12 | 2011-04-27 | 中国二十二冶集团有限公司 | Water-blocking mould at doorway of ground heating toilet and method for blocking water by using water-blocking mould |
| CN102031872B (en) * | 2010-11-12 | 2012-03-28 | 中国二十二冶集团有限公司 | Water-blocking mould at doorway of ground heating toilet and method for blocking water by using water-blocking mould |
| CN102322023A (en) * | 2011-06-21 | 2012-01-18 | 中铁十九局集团第二工程有限公司 | Protection wall construction method with three layers of steel boards serving as breaking joint board |
| CN102758388A (en) * | 2012-07-06 | 2012-10-31 | 中铁十七局集团第二工程有限公司 | Module device for transverse expansion and contraction joint of double-block type ballastless track and construction method |
| CN105067436A (en) * | 2015-08-14 | 2015-11-18 | 山西省交通科学研究院 | Multi-axial fatigue fracture test equipment for bridge expansion joint material and implementation method of multi-axial fatigue fracture test equipment |
| CN106049205A (en) * | 2016-08-04 | 2016-10-26 | 中铁十七局集团第三工程有限公司 | Formwork for ballast-less track base casting |
| CN106638183A (en) * | 2016-10-26 | 2017-05-10 | 中铁五局集团有限公司 | Urban rail transit assembly board type high precision rail base cast-in-place construction method |
| CN106906711A (en) * | 2017-04-27 | 2017-06-30 | 皇玉彬 | A kind of concrete slab and preparation method thereof |
| CN108625244A (en) * | 2018-06-26 | 2018-10-09 | 中建五局土木工程有限公司 | A kind of roadbed composite structure and its construction method |
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| CN101725097B (en) | 2012-01-04 |
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