CN115627665B - Construction method of fast-supporting integrally-assembled prefabricated track structure - Google Patents
Construction method of fast-supporting integrally-assembled prefabricated track structure Download PDFInfo
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- CN115627665B CN115627665B CN202211553322.XA CN202211553322A CN115627665B CN 115627665 B CN115627665 B CN 115627665B CN 202211553322 A CN202211553322 A CN 202211553322A CN 115627665 B CN115627665 B CN 115627665B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
- E01B29/02—Transporting, laying, removing, or renewing lengths of assembled track, assembled switches, or assembled crossings
Abstract
The invention discloses a construction method of an integrally assembled prefabricated track structure with rapid support, which relates to the technical field of track traffic assembly and comprises the following steps: after the underground structure finishes evaluation and delivery track laying construction operation surface, establishing a CP III track control network; for each track laying unit, conveying the prefabricated track slabs to a laying section of an underground interval, and coarsely laying the prefabricated track slabs on a structural bottom plate; finely adjusting the prefabricated track slab after rough laying; establishing a permanent support structure at the bottom of the prefabricated track slab so that the prefabricated track slab is limited; and pouring a filling layer under the fixed prefabricated track slab so as to enable the prefabricated track slab and the structural bottom plate to be connected and fastened. The construction method has the advantages of few construction procedures, capability of realizing the streamline operation construction of the track bed with the prefabricated track structure, no work-saving procedure, simple construction mold, less quantity, capability of improving the construction efficiency of the underground track and reducing the construction cost, flexible construction organization and convenience in construction.
Description
Technical Field
The invention relates to the technical field of rail transit assembly, in particular to a construction method of an integrally assembled type prefabricated rail structure capable of supporting quickly.
Background
The rail laying is a key link after the beginning of the rail transportation construction process, and the rail transportation is not only a foundation of rail transportation but also a premise of subsequent equipment installation. Among different line laying modes, underground line track laying is limited due to small and small idle operation, poor visibility conditions, few and limited blanking points, and has more rigid factors and the slowest construction speed.
With the gradual development of urban rail transit assembly, the prefabricated assembly type rail structure becomes the key point and the trend of the current rail structure development. The prefabricated track structure can well move the production and manufacture of the prefabricated track plate from the underground site to a factory, and the site construction workload of laying underground track is reduced. At present, the prefabricated assembled track structure of urban rail transit has more types and is in a rapid development period, and an assembled construction method matched with a prefabricated track plate is also in the rapid development period. At present, the problems of complicated construction procedures, low equipment automation degree, low construction efficiency and the like generally exist in the construction of the existing prefabricated track structure.
Disclosure of Invention
The invention aims to provide a construction method of an integrally-assembled type prefabricated track structure capable of being supported quickly, and aims to solve the technical problems that in the prior art, the existing prefabricated type track structure is complicated in construction process, low in equipment automation degree and low in construction efficiency.
The invention provides a construction method of an integrally assembled prefabricated track structure capable of being supported quickly, which comprises the following steps:
step 100, after the underground structure finishes evaluation and delivery of a track laying construction operation surface, establishing a CP III track control network;
200, for each track laying unit, conveying the prefabricated track slabs to a laying section of an underground interval, and coarsely laying the prefabricated track slabs on a structural bottom plate;
step 300, fine adjustment is carried out on the prefabricated track slab after rough laying;
step 400, establishing a permanent support structure at the bottom of the prefabricated track slab so that the prefabricated track slab is limited;
500, pouring a filling layer under the fixed prefabricated track slab to enable the prefabricated track slab and the structural bottom plate to be connected and fastened;
the bottom of the prefabricated track slab is prefabricated into an arc surface, and when the filling layer is poured, vibration is not needed, and a pressing plate anti-floating device is not needed.
As an embodiment of the present invention, the method further includes: laying the rails and installing the fasteners may be performed after step 500 or before step 500.
In one embodiment of the present invention, no steel bar is disposed in the filling layer, and the filling material is a micro-expansion cement grouting material.
As an embodiment of the present invention, the steps 200 to 500 adopt a double shield well assembly line laying method, which specifically includes:
for each track laying unit, shield wells or track laying feed openings at two ends of an underground section are utilized, a track plate is prefabricated underground at one end of the shield well, and the plate and a rough laying plate are gradually transported from a far end to a near end; and the other end of the shield is used for shielding underground grouting material, and the plate, the fixing plate and the lower filling layer of the grouting plate are gradually and finely adjusted from the near end to the far end.
As an embodiment of the present invention, steps 200-500 adopt a single shield well placement method, which specifically includes:
for each track laying unit, only one end of an underground section is used for constructing a shield well or a track laying feed opening, a plate and a rough laying plate are transported from a near end to a far end, and a construction section or a section is continuously and coarsely laid; the plate conveying vehicle and the plate hanging vehicle exit from the working surface; fine adjustment of the plate, the fixing plate and the filling layer below the plate from the near end to the far end.
As an embodiment of the present invention, in step 100, establishing a CP iii track control network specifically includes: establishing a plane and elevation control network;
wherein the control points are arranged in pairs along both sides of the line.
In one embodiment of the present invention, the rough placement accuracy is ± 50mm in step 200.
As an embodiment of the present invention, in step 300, the fine tuning specifically includes: and installing a prism on the prefabricated track slab, and accurately adjusting and positioning the prefabricated track slab after rough paving through prefabricated track slab fine adjustment equipment and a total station, wherein the positioning accuracy comprises plane and elevation positioning, and is +/-1 mm.
As an embodiment of the present invention, in step 400, the building a permanent support structure specifically includes: prefabricating a wedge-shaped supporting block, and reserving guide grooves at two sides of the prefabricated track structure; and inserting one end of the wedge-shaped supporting block with small thickness into the guide groove matched with the wedge-shaped supporting block.
As an embodiment of the present invention, step 500 specifically includes:
installing filling layer pouring templates for every other one or more plates; the grouting material transportation equipment transports the grouting material to a construction operation surface from a shield well or a track laying feed opening, and the grouting material is poured under the precisely adjusted prefabricated track slab to form a slab lower filling layer; filling the filling layer and forming two side line drainage ditches at the same time; and after the strength of the grouting material of the filling layer meets the requirement, capping the expansion joint of the filling layer.
Compared with the prior art, the invention has the beneficial effects that:
(1) The construction process of the prefabricated track structure is less, the track laying construction efficiency is improved, sufficient construction time is provided for subsequent equipment installation, and the overall construction progress is improved;
(2) The invention can adopt double shield well construction to realize streamlined operation, has no cross construction operation, has no work-holding process in the waiting period of concrete curing, and can simultaneously carry out the whole ballast bed construction process, thereby further improving the construction efficiency;
(3) The support and fixation of the prefabricated track plate can be realized through the wedge-shaped support block in the construction stage, the prefabricated track plate is fixed without special equipment, the wedge-shaped support block is convenient to install, construction machines and tools are saved, the construction speed is accelerated, the labor for transporting and installing the equipment is saved, and the construction cost is saved;
(4) The invention has flexible construction organization, and can meet the construction operation requirements of a single shield well or double shield wells, a tire type construction operation vehicle or a track type track laying operation device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic cross-sectional view of a fast-supporting integrally fabricated pre-fabricated rail provided in accordance with an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a construction method of a prefabricated track structure according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a double shield well assembly line laying arrangement provided by an embodiment of the present invention;
FIG. 4 is a schematic diagram of a single shield well assembly line placement method provided by an embodiment of the present invention;
reference numerals:
1. a steel rail; 2. prefabricating a track slab; 3. an isolation layer; 4. a wedge-shaped support block; 5. a filling layer;
21. a perfusion hole; 22. a guide groove;
101. a tire type plate conveying vehicle; 102. a tire type hanging plate vehicle; 103. fine adjustment of the vehicle in a tire type; 104. a tire type grouting vehicle.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
As shown in fig. 1, the construction method of the present invention is matched with a fast supporting integrally fabricated track structure, which includes: the steel rail comprises a steel rail 1, a prefabricated rail plate 2, an isolation layer 3, a wedge-shaped supporting block 4 and a filling layer 5. The isolation layer 3 and the prefabricated track slab 2 are compounded into a whole in a factory. The prefabricated track plate 2 and the wedge-shaped supporting block 4 are both prefabricated structures in a factory. The wedge-shaped supporting block 4 is installed in a guide groove 22 reserved in the prefabricated track plate 2, the guide groove 22 is formed in the side face of the prefabricated track plate 2, the insertion end of the wedge-shaped supporting block 4 faces the side face of the prefabricated track plate 2 and is obliquely inserted into the guide groove 22 downwards, and the wedge-shaped supporting block 4 plays a role in supporting and fixing the prefabricated track plate 2 in the construction stage. The filling layer 5 is cast in situ, no reinforcing steel bars are arranged in the filling layer 5, and the filling material is micro-expansion cement grouting material. After reaching the design strength, the filling layer 5 and the wedge-shaped supporting block 4 play a role in limiting and connecting the prefabricated track slab 2 with the structural bottom plate.
It should be noted that the weight of the wedge-shaped supporting block 4 is not more than 10kg, and the installation can be performed by a worker with bare hands without the aid of equipment, and the installation is performed by inserting the thin end of the wedge-shaped supporting block 4 into the reserved guide groove 22 on the side surface of the prefabricated track slab 2.
Meanwhile, the lower structure of the track structure in the embodiment of the invention is a circular shield, and the prefabricated track structure can also be applied to other structures such as a tunnel with a horseshoe-shaped section and the like.
Based on the existing structure of the prefabricated track structure, the invention provides a construction method of an integrally assembled type prefabricated track structure capable of being supported quickly, which comprises the following steps:
firstly, after an underground structure finishes evaluation and delivery of a track laying construction working face, establishing a CP III track control network;
then, taking a plurality of stations as one track laying unit, for example, taking a two-station one-section as one track laying unit, and for each track laying unit, conveying the prefabricated track slab to a laying section of an underground section, and roughly laying the prefabricated track slab on a structural bottom plate;
then, finely adjusting the prefabricated track slab after being coarsely paved;
then, a permanent supporting structure is built at the bottom of the prefabricated track slab so that the prefabricated track slab is limited;
finally, filling a filling layer 5 under the fixed prefabricated track slab so as to enable the prefabricated track slab and the structural bottom plate to be connected and fastened;
the bottom of the prefabricated track slab is prefabricated into an arc surface, and the filling layer is constructed in a concealed mode, so that air at the bottom needs to be emptied when the filling layer is poured, and the fact that the poured filling layer is tightly connected with the prefabricated slab without a cavity can be guaranteed.
Therefore, in the prior art, when the filling layer 5 is filled, the flat-bottom structure of the track slab needs to be vibrated to exhaust air, and when the circular-arc structure is filled, the filling material is extruded to two sides from the filling hole 21 in the middle, and the circular-arc structure has no filling dead angle, so that the air is favorably emptied to two sides, thereby bringing convenience to construction, avoiding vibration and avoiding a pressing plate anti-floating device.
Example 1:
as shown in fig. 3, the concrete construction method may adopt a double shield well assembly line: taking a two-station one-section as a track laying unit, wherein shield wells or track laying feed openings on two sides of the section can be used for track construction blanking, and a track plate is prefabricated underground by a shield well on the left side and is gradually transported from the far end to the near end to form a coarse laying plate; and the right shield underground grouting material gradually and precisely adjusts the plate, the fixed plate and the lower filling layer of the grouting plate from the near end to the far end.
Specifically, as shown in fig. 2, a specific construction step is provided, which comprises S1-S5, wherein the construction method S1 is as follows: and after the underground structure finishes evaluation and delivery of a track laying construction working face, establishing a CP III track control network comprising a plane and an elevation control network. The plane CP III control network is closed to the plane control network (CP II), and the elevation control points adopt a free survey station triangulation elevation measurement method to carry out the elevation measurement simultaneously with the plane measurement. The control points are arranged in pairs along both sides of the line.
The construction method S2 comprises the following steps: firstly, the tire type plate-lifting vehicle 102 and the tire type plate-conveying vehicle 101 are lifted into an underground section from a shield well on the left side, the lifting sequence is that the tire type plate-lifting vehicle 102 is in front of the shield well on the left side and the tire type plate-conveying vehicle 101 is behind the shield well on the left side, the tire type plate-conveying vehicle 101 conveys the prefabricated track plates 2 and the wedge-shaped supporting blocks 4 to a laying section from the shield well on the left side, and the quantity of the prefabricated track plates 2 conveyed by the tire type plate-conveying vehicle 101 each time is carried out according to the load requirement of the tire type plate-conveying vehicle 101, preferably 2-4. The tire type hoisting plate vehicle 102 hoists the prefabricated track plate 2 and the wedge-shaped supporting block 4 to the structural bottom plate from the tire type plate transporting vehicle 101 at a laying section, and performs rough laying on the prefabricated track plate 2, wherein the rough laying precision is +/-50 mm. The sequence of the plate transportation and the lifting plate is from one end of the shield well close to the right side of the interval to the shield well end on the left side gradually.
The construction method S3 comprises the following steps: because the fine adjustment speed of the slab is higher than the slab conveying speed, in order to ensure the continuity of fine adjustment construction operation, the tire type fine adjustment vehicle 103 can be hoisted into the underground section from the shield well on the right side after the prefabricated track slab 2 is coarsely paved for a certain distance. The upper surface of the prefabricated track plate 2 is provided with a prism hole, and the prefabricated track plate 2 after being paved coarsely is accurately adjusted and positioned through a tire type fine adjustment vehicle 103 and a total station, wherein the positioning accuracy comprises plane and elevation positioning, and the positioning accuracy is +/-1 mm. After the fine adjustment of the prefabricated track plate 2 is completed, the wedge-shaped supporting block 4 is installed in the prefabricated track plate reserved guide groove 22, and the prefabricated track plate 2 is fixed.
The construction method S4 comprises the following steps: firstly, the tire type grouting vehicle 104 is hoisted into an underground region from a shield well on the right side, because the running speed of the tire type grouting vehicle 104 in a tunnel is slow, the fine adjustment speed of the tire type fine adjustment vehicle 103 is relatively fast, the tire type fine adjustment vehicle 103 and the tire type grouting vehicle 104 can be hoisted into the region simultaneously, the hoisting sequence is that the tire type fine adjustment vehicle 103 is in front, and the tire type grouting vehicle 104 is behind. Before filling the lower filling layer 5 of the plate, filling layer pouring formworks are required to be installed on every other plate or plates. The expansion joint templates are installed at the plate ends of the two end plates, and the templates are installed on the two sides of the large-gradient section for preventing grouting materials from overflowing. And the tire type grouting vehicle 104 conveys the grouting material to a construction operation surface, and the grouting material is poured under the precisely adjusted prefabricated track slab 2 through the pouring hole 21 on the upper part of the prefabricated track slab 2 to form the slab lower filling layer 5. The filling layer 5 is poured while forming a two-side line drain. And after the strength of the grouting material of the filling layer 5 meets the requirement, capping the expansion joint of the filling layer 5.
The construction method S5 comprises the following steps: laying steel rails 1 and installing fasteners. And after the filling layer 5 is poured into the interval, laying the steel rail 1 and installing the fastener. Optionally, lay rail 1 and installation fastener need not to wait that filling layer 5 pours and maintains, can carry out the rail after prefabricated track board fine tuning is fixed. The construction time of laying the steel rail 1 and installing the fasteners is flexibly carried out according to the whole-line rail laying construction organization, and the operation can be discontinuous with the track bed construction.
It should be noted that the construction methods S2 to S4 are streamlined operations, and can be performed simultaneously in the same interval, and the steps do not intersect and interfere with each other. No work procedures are needed, and the continuity and the high efficiency of construction operation are ensured.
In the construction method S2, in order to increase the slab transportation speed at the initial stage of construction, the tire-type slab lifting vehicle 102 and the tire-type slab transportation vehicle 101 may be lifted into the underground section from the shield well on the left side in the shield well on the right side, and after a section of the prefabricated track slab 2 is coarsely laid, the slab is laid from the shield well on the left side. Then the right shield underground tire type fine adjustment vehicle 103 and the tire type grouting vehicle 104 are used for fine adjustment and filling of the filling layer 5.
Example 2:
on the basis of example 1, as shown in fig. 4, a single shield well may also be used for laying: and when the shield well or the track laying feed opening at one side of the interval cannot be provided, only the shield well or the track laying feed opening at one side of the interval can be utilized to carry out track construction feeding. Prefabricating the track slab 2 from the underground of the shield, firstly transporting the slab and the rough paving slab from the near end to the far end, and continuously and roughly paving a construction section or a section; the tire type plate conveying vehicle 101 and the tire type plate lifting vehicle 102 exit from the working surface; fine adjustment of the plate, the fixation plate and the perfusion plate lower filling layer 5 from the near end to the far end.
Specifically, the tire type hanging plate vehicle 102, the tire type plate conveying vehicle 101, the tire type fine adjustment vehicle 103 and the tire type grouting vehicle 104 all enter the underground section from the shield underground, and the prefabricated track plate 2, the wedge-shaped supporting block 4 and the filling layer 5 are also filled with grouting materials and all enter the underground section from the shield underground.
The construction method is different from the embodiment 1 in that the construction methods S3 and S4 are as follows: the tyre type hanging plate vehicle 102 and the tyre type plate conveying vehicle 101 are firstly withdrawn from the construction operation surface, and then the tyre type fine adjustment vehicle 103 and the tyre type grouting vehicle 104 are hoisted into the underground region from the shield well.
In the construction method S2, the plate transportation and the rough paving are preferably carried out for a complete interval, and then S3 is carried out, or the plate transportation and the rough paving are carried out for a construction section, then S3 and S4 are carried out, and then S2, S3 and S4 are carried out in a recycling manner according to the requirements of construction organization.
Example 3:
on the basis of embodiments 1 and 2, the tire type plate conveying vehicle 101, the tire type plate lifting vehicle 102, the tire type fine adjustment vehicle 103 and the tire type grouting vehicle 104 can also be rail construction operation vehicles, such as a rail flat car instead of the tire type plate conveying vehicle 101, a track laying trolley instead of the tire type plate lifting vehicle 102, a manual fine adjustment device instead of the tire type fine adjustment vehicle 103 and a rail type grouting machine instead of the tire type grouting vehicle 104. When the concrete implementation is carried out, the whole or part of the construction units can be replaced according to the construction conditions of the construction units.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A construction method of an integrally assembled type prefabricated track structure capable of being supported quickly is characterized by comprising the following steps: step 100, after the underground structure finishes evaluation and delivery of a track laying construction operation surface, establishing a CP III track control network; 200, for each track laying unit, conveying the prefabricated track slabs to a laying section of an underground interval, and coarsely laying the prefabricated track slabs on a structural bottom plate; step 300, fine adjustment is carried out on the prefabricated track slab after rough laying; step 400, establishing a permanent support structure at the bottom of the prefabricated track slab so that the prefabricated track slab is limited, wherein the establishment of the permanent support structure specifically comprises: prefabricating a wedge-shaped supporting block, and reserving guide grooves at two sides of the prefabricated track structure; inserting one end of the wedge-shaped supporting block with small thickness into a guide groove matched with the wedge-shaped supporting block; 500, pouring a filling layer under the fixed prefabricated track slab to enable the prefabricated track slab and the structural bottom plate to be connected and fastened; the bottom of the prefabricated track slab is prefabricated into an arc surface, when a filling layer is filled, filling materials are extruded to two sides from a filling hole in the middle, and the arc-shaped structure has no filling dead angle and is beneficial to emptying gas to two sides, so that convenience is brought to construction, vibration is not needed, and a pressure plate anti-floating device is not needed; step 200-step 500 adopt a double shield well assembly line laying method, which specifically comprises the following steps: for each track laying unit, shield wells or track laying feed openings at two ends of an underground section are utilized, a track plate is prefabricated underground at one end of the shield well, and the plate and a rough laying plate are gradually transported from a far end to a near end; the shield underground grouting material at the other end gradually finely adjusts the plate, the fixing plate and the filling layer below the filling plate from the near end to the far end, and the double shield well assembly line laying method is streamlined operation and can be simultaneously carried out in the same interval, and the steps can not be crossed and interfered, no work-nesting working procedure is carried out, so that the continuity and the high efficiency of the construction operation are ensured; or step 200-step 500, adopting a single shield well laying method, wherein the single shield well laying method specifically comprises the following steps: for each track laying unit, only one end of an underground section is used for constructing a shield well or a track laying feed opening, a plate and a rough laying plate are transported from a near end to a far end, and a construction section or a section is continuously and coarsely laid; the plate conveying vehicle and the plate hanging vehicle exit from the working surface; finely adjusting the plate, the fixing plate and the filling layer below the filling plate from the near end to the far end; lay rail and installation fastener before step 500, lay rail and installation fastener and need not to wait that the filling layer pours and maintains, can carry out the rail after the prefabricated track board fine tuning is fixed.
2. The construction method of a fast supporting integrally assembled prefabricated track structure as claimed in claim 1, wherein no steel bar is disposed in the filling layer, and the filling material is micro-expansion cement grouting material.
3. The construction method of the fast-supporting integrally-assembled prefabricated track structure according to claim 1, wherein in the step 100, the establishing of the CP III track control net specifically comprises: establishing a plane and elevation control network; wherein the control points are arranged in pairs along both sides of the line.
4. The construction method of a fast supporting integrally fabricated precast track structure according to claim 1, wherein the rough paving precision is ± 50mm in step 200.
5. The construction method of the fast-supporting integrally-assembled type prefabricated rail structure according to claim 1, wherein in the step 300, the fine adjustment specifically comprises: and installing a prism on the prefabricated track slab, and accurately adjusting and positioning the prefabricated track slab after rough paving through prefabricated track slab fine adjustment equipment and a total station, wherein the positioning accuracy comprises plane and elevation positioning, and the positioning accuracy is +/-1 mm.
6. The construction method of the fast-supporting integrally-assembled prefabricated track structure as claimed in claim 1, wherein the step 500 specifically comprises: installing filling layer pouring templates for every other one or more plates; the grouting material transportation equipment transports the grouting material to a construction operation surface from a shield well or a track laying feed opening, and the grouting material is poured under the precisely adjusted prefabricated track slab to form a slab lower filling layer; filling the filling layer and forming two side line drainage ditches at the same time; and after the strength of the grouting material of the filling layer meets the requirement, capping the expansion joint of the filling layer.
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| DE4411889A1 (en) * | 1994-04-07 | 1995-10-12 | Hochtief Ag Hoch Tiefbauten | Ballastless track system for at least one railroad track and method of manufacture |
| CN104480802A (en) * | 2014-11-20 | 2015-04-01 | 中铁八局集团有限公司 | Construction method of CRTS III plate type ballastless track |
| CN105625104B (en) * | 2016-01-11 | 2018-08-24 | 北京城建设计发展集团股份有限公司 | A kind of Prefabricated slab type vibration damping track system and matching operation method |
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| CN113106790A (en) * | 2021-03-23 | 2021-07-13 | 杭州银龙唐普徕科技有限公司 | Prefabricated plate type ballastless track structure |
| CN215947749U (en) * | 2021-07-08 | 2022-03-04 | 青岛科而泰环境控制技术有限公司 | Prefabricated assembled ballast bed |
| CN114645490A (en) * | 2021-11-16 | 2022-06-21 | 中电建铁路建设投资集团有限公司 | Construction method of ballastless track of precast slab of urban rail transit underground line |
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|---|---|
| CN115627665A (en) | 2023-01-20 |
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