CN112962366A - Reverse paving construction method for CRTS III type track slab in mountainous area - Google Patents
Reverse paving construction method for CRTS III type track slab in mountainous area Download PDFInfo
- Publication number
- CN112962366A CN112962366A CN202110239978.3A CN202110239978A CN112962366A CN 112962366 A CN112962366 A CN 112962366A CN 202110239978 A CN202110239978 A CN 202110239978A CN 112962366 A CN112962366 A CN 112962366A
- Authority
- CN
- China
- Prior art keywords
- construction
- paving
- track
- track slab
- slab
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
-
- 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
- E01B29/005—Making of concrete parts of the track in situ
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/09—Ballastless systems
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The technical field of ballastless track construction in a high-speed rail mountain construction environment, and particularly relates to a reverse paving construction method for a CRTS III type track slab in a mountain area. The method is characterized in that no logistics channel is used for transporting materials such as track slabs in the construction process, the base is used as a transportation channel, the roadbeds on two sides of the track are used as suitable slab storage points, a reverse paving method from far to near is adopted, and paving is sequentially carried out through rough paving, fine adjustment, pouring and belt mold maintenance, so that all processes are closely connected, the assembly line type construction process is formed, the investment of construction is greatly saved, the slabs are more convenient to store and take, the secondary transfer efficiency of the track slabs is improved, the paving quality of the track slabs is guaranteed, and the slab ballastless track bed paving efficiency in the construction environment of special terrains in mountainous regions is greatly improved.
Description
Technical Field
The invention relates to the technical field of ballastless track construction in a high-speed rail mountain area construction environment, in particular to a reverse paving construction method for a CRTS III type track slab in a mountain area.
Background
The CRTS III plate type ballastless track is a new generation ballastless track structure which is independently researched and developed on the basis of summarizing the design, construction and operation experiences of the ballastless tracks at home and abroad. The existing CRTS III type plate laying construction method is based on plain areas, railway lines are mostly viaducts and roadbed structures, construction roads are parallel and adjacent to the viaducts, construction vehicles can reach any construction point, the traffic condition is relatively good, and the track plate laying basically adopts a side laying method construction technology. The track slab, the concrete and other raw materials are transported through the sidewalk, the base and the paving plate are not limited by the material flow channel, the operation of each procedure can be independently carried out, the construction can be carried out in a multi-point blooming mode, and the work efficiency is high. In recent years, with the rapid development of highway networks in China, the highway networks in eastern plain areas and economically developed areas are gradually perfected, the center of gravity of railway construction gradually turns to western mountain areas and economically developed areas, the construction of high-speed railways in mountain areas is gradually increased, and the conventional CRTS III plate type ballastless track laying technology has the following technical defects:
(1) the terrain of mountainous areas is complex, bridges and tunnels in the construction range are dense, the traffic conditions are poor, the track plates cannot be transported to the positions under the bridge, the bridge piers cannot be lifted to the positions above the bridge, and the track plates are difficult to store.
(2) The newly-built railway is limited by mountainous terrain, construction roads can not be built along the line, and resource transportation of equipment, materials, machines and tools and the like required by a paving operation surface is difficult.
(3) The operation surface of the floor is limited by the dense landform and the bridge and tunnel, all the working procedures must be closely connected, the working procedure circulating operation and the construction efficiency can be ensured, and the construction organization of the operation surface is difficult.
(4) The self-compacting concrete has sensitive performance, the pouring is required to be finished within 2 hours after the self-compacting concrete is taken out of the machine, the concrete transportation needs to be controlled within 1 hour, and the site selection of a concrete supply station and a mixing station is difficult.
Disclosure of Invention
The invention aims to overcome the defect that the conventional CRTS III type slab ballastless track laying technology in the prior art cannot adapt to unfavorable mountain construction environments such as mountain height, valley depth, dense bridges and tunnels, unsmooth traffic and the like, and provides a reverse laying construction method for a mountain CRTS III type track slab.
In order to achieve the above purpose, the invention provides the following technical scheme:
step 1, examining the distribution conditions of roads, bridges and tunnels in a construction line range, arranging a plurality of mixing stations in the construction line range, wherein the mixing stations are used for supplying self-compacting concrete, and the distance between every two adjacent mixing stations is not more than 20 km;
the plate paving operation sequentially comprises four working procedures of rough paving, fine adjustment, pouring and maintenance with a mold;
according to the working procedures, the construction section comprises four construction sections, after one working procedure operation of the current construction section is completed, the next working procedure is executed in the current construction section, and then the construction operation of the certain working procedure is continuously executed in the adjacent section; the whole construction route is completed by circularly propelling in this way.
By adopting a reverse paving method construction scheme from far to near and means of paving in sequence of rough paving, fine adjustment, pouring and curing with a mold, all the working procedures are closely connected to form a production line type construction process, the interference among different construction working procedures is avoided, the utilization rate of equipment is improved, and the laying efficiency of the track line in the construction environment of special land types such as mountainous areas is greatly improved; the construction personnel and equipment of the working face are in standardized configuration, and the working personnel and the working items are relatively fixed, so that the quality control is convenient, and the construction quality of the floor can be effectively ensured.
As a preferred technical scheme of the invention, in the step 1, 150-channel 200cm cutting platforms at two sides of a roadbed are selected as plate storage points of the track plates, and the track plates are stored in groups along the direction of a line. In the track plate storage process, a prefabricated foundation support pad is adopted, the track plate is vertically placed and stored along the line direction, and 6-8 plates are stored in each group.
According to the roadbed retaining structure, the roadbed retaining structure specifically comprises three storage modes of a side slope, a sheet pile wall and a retaining wall.
Further specifically, when the outer side of the roadbed is of a slope structure, the specific board storage scheme comprises the following steps: embedding an embedded part of 25cm by 1cm outside the strip foundation, welding 16# I-steel (or a pump pipe, wherein mortar is adopted for filling and compacting in the pump pipe) on the embedded part, welding a 45-degree inclined strut at a position of 2m height of 18# I-steel, supporting on a side slope concrete framework, drilling and anchoring a reinforcing steel bar, and welding and fixing. When the plate is stored, the first track plate is fixed on the support frame by the U-shaped steel bar clamping groove, the subsequent track plate is fixed on the former plate by the U-shaped steel bar clamping groove, and the T-shaped wood support is arranged between the two adjacent track plates. One side of the track slab close to the roadbed adopts a wooden inclined strut to prevent the track slab from overturning.
When the roadbed outside is gravity type retaining wall structure, set up the support wooden wedge between track board and gravity type retaining wall, guarantee that the track board is perpendicular, adopt the square timber to support on retaining wall top flower stand at the slope top, be fixed in retaining wall top flower stand outlet with phi 6 wire rope with the track board.
When the outer side of the roadbed is of a pile plate wall structure, square wood is filled between the pile plate wall and the track plate to ensure that the track plate is vertical, square wood support is adopted between the pile plate wall and the track plate to ensure that the track plate is vertical, and a phi 6 galvanized steel wire rope is adopted to fix the first track plate on the top of the pile plate wall.
After the roadbed section track plates are stored, when a cable trough and a road shoulder are constructed, each group of track plates are connected and locked through 2 observation holes by adopting phi 20 finish-rolled deformed steel bars, so that the stability of the roadbed section track plates is integrally increased, the inner-side inclined wood support can be disassembled, and the inclined wood support is restored after the road shoulder is constructed.
As the preferred technical scheme of the invention, the base is selected as a logistics transportation channel, and the material is conveyed to the target construction section.
The traditional construction technology of laying the CRTS III template is based on plain areas, railway lines are mostly viaducts and roadbed structures, construction roads are parallel and adjacent to the construction roads, construction vehicles can reach any construction points, traffic conditions are relatively good, track plates, concrete and other raw materials are transported through the roads, bases and paving plates are not limited by material flow channels, operation of all working procedures can be independently carried out, construction can be carried out in a multi-point blooming mode, work efficiency is high, compared with the construction conditions in a mountainous area environment, development of track construction work is greatly limited, the bases are used as construction roads, required work and material machines such as track plates, reinforcing steel bars, templates and self-compacting concrete are transported to a construction operation site through the bases, the problem of difficulty in logistics transportation is solved, new construction roads or temporary land acquisition is avoided, and construction road investment is saved.
In the construction process, due to the limitation factor of geographic environment, the construction configuration is limited, and as a preferred technical scheme of the invention, in the paving operation process, the left line and the right line are staggered by one section for construction. The left line and the right line of the track line are synchronously pushed, the left line and the right line are constructed in a staggered mode in one section, namely in the same construction section, when the left line finishes a rough paving procedure, a fine paving procedure is directly carried out, and meanwhile, the right line starts the rough paving procedure; therefore, uneven distribution caused by limited number of configured construction tools and delay of construction period are avoided; meanwhile, the continuity of each process can be improved, the construction tool cannot be insufficient or idle, and the overall construction efficiency is ensured.
As a preferred technical scheme, according to the CRTS III type plate ballastless track structure, a reinforced concrete base is arranged below a track plate, the base width of a roadbed section is 3.1m, and the base width of a bridge and a tunnel section is 2.9m, so that the requirement on the travelling width is met. The base transportation mode is matched with a one-way reverse paving construction method from far to near. Not only avoids a large amount of repetitive operations, but also greatly improves the construction efficiency and the construction quality.
According to the preferred technical scheme, the arrangement of the mixing station is adjusted according to the existing mixing station in the paving range, and according to the production requirement of the self-compacting concrete, the mixing station is provided with a viscosity modifying material storage tank, an expanding agent storage tank, a sand bin and a gravel bin, wherein the number of the viscosity modifying material storage tank, the expanding agent storage tank, the sand bin and the gravel bin is required to meet the requirement of the self-compacting concrete consumption for 15 continuous days.
In principle, the distance between the mixing stations does not exceed 20km, so as to meet the requirement that the self-compacting concrete is sensitive in performance and the pouring is finished within 2 hours after the self-compacting concrete is taken out of the machine. Namely, the farthest distance between the target construction road section and the mixing station does not exceed 10km in the construction and laying process.
As a preferred technical scheme of the invention, in the step 2, according to four processes of the paving operation, firstly, the track slabs which are stored nearby are well arranged in the construction section through rough paving; then finely adjusting the height and the distance of the arranged track slabs, and installing a forming template; and then, the self-compacting concrete is poured and the curing process with the mould is carried out.
In the construction process of each laying unit, the configured construction auxiliary devices comprise a gantry crane, a pouring trolley, a truck-mounted crane, a flat car, a truck crane and a self-sealing concrete forming template.
According to the preferable technical scheme, in the construction process of the construction section, a truck crane hoists the track slab at a nearby slab storage point, the track slab is arranged on a flat car, the flat car transports the track slab to the construction section through a base, a gantry crane is adopted to carry out rough paving operation in sequence according to the slab paving direction, a total station is adopted to carry out fine adjustment operation on the track slab after the rough paving process is finished, and then a self-compacting concrete forming template and an anti-floating device are installed.
The construction method comprises the following steps that three gantry cranes are arranged in one construction section, the coverage range of the three gantry cranes is about 600-700m, the gantry cranes move by adopting P24 rail routing, the traveling speed of the gantry cranes is 125m/min, and the three gantry cranes sequentially perform rough paving operation according to the paving direction; after the coarse paving, a total station is adopted to carry out fine adjustment operation on the track slab, and then a self-compacting concrete edge sealing template and an anti-floating device are installed.
As a preferred technical scheme of the invention, in the process of filling operation, self-compacting concrete is conveyed to the position of a target construction section through a base conveying line, then a transfer hopper containing the self-compacting concrete is conveyed to a fine-tuned section through a gantry crane, the transfer hopper is placed on a filling trolley through the gantry crane, and then the transfer hopper is lifted to a required filling height through driving the filling trolley to perform concrete filling.
As a preferred technical solution of the present invention, the self-compacting concrete transportation vehicle transports to a construction section through a track slab, and the side surface of the track slab is used as an auxiliary guide base surface, and the transportation vehicle is provided with guide wheels that are engaged with the guide base surfaces on both sides of the track slab.
As a preferable technical scheme of the invention, in the process of carrying out the curing process with the mold, a curing barrel is adopted for curing, the barrel bottom of the curing barrel is connected with a transfusion hose, and the transfusion hose is provided with a switch for controlling the flow speed of liquid drops.
In the maintenance process with the mold, because the plugging concrete poured into the pouring hole and the observation hole is required to be 5mm higher than the surface of the track slab, the moisture retention time after maintenance is short, the maintenance workload is large along with the increase of the construction length, the maintenance cannot be guaranteed easily due to the influence of human factors, and the quality hidden danger exists in the later period. The concrete curing mode of the existing CRTS III track slab pouring and observation hole is optimized and improved through technical research. The maintenance device uses a drip irrigation maintenance principle for reference, a small water bucket is used as a maintenance bucket, the maintenance bucket is placed on a PVC pipe with the length of about 30cm, a hole is drilled at the bottom of the bucket, a transfusion hose is inserted, and a switch is arranged on the hose to control the drip irrigation speed.
Compared with the prior art, the invention has the beneficial effects that:
the method adopts a mode of storing the track slab roadbed nearby based on the construction of unfavorable mountainous areas such as mountain height, valley depth, dense bridges and tunnels, unsmooth traffic and the like, avoids the occupation of cultivated land, has small foundation construction amount, convenient slab storing and taking and low slab storing cost, improves the secondary transfer efficiency of the track slab, and ensures the smooth pavement of the track slab of the ballastless track bed.
Due to the special construction environment of the mountainous area, no construction access road is used for transporting materials such as track slabs, self-compacting concrete, reinforcing steel bars and the like in the construction process, and the base is used as a logistics channel, so that the problem of material entering of an operation surface is effectively solved, conditions are created for adopting a scheme of roadbed storing plates, temporary land acquisition and reclamation are avoided, the construction cost is reduced, and the environment is protected; the access board is more convenient, has improved the secondary of track board and has transported efficiency.
The whole process takes a mixing station as a reference point, and circulates in a one-way from a position far away from the mixing station to a direction close to the mixing station, so that a production line type construction process is formed, the operation is convenient and fast, the continuity is realized, the construction efficiency is greatly improved, and the construction cost is reduced.
Description of the drawings:
FIG. 1 is a schematic view of a construction of a "reverse paving method";
FIG. 2 is a schematic plan view of a construction process for a construction section;
FIG. 3 is a schematic longitudinal section of a construction process for a construction section;
the labels in the figure are: 1-gantry crane, 2-transport vehicle, 3-pouring trolley, 4-bottom plate, 5-track plate, 6-mixing station, 7-left line and 8-right line
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
Example 1
The construction method comprises the following steps of carrying out CRTS III type plate ballastless track bed laying construction operation on a road section combining a certain mountain road, a tunnel and a bridge in western parts, wherein the specific gravity of the bridge and the tunnel accounts for 78.7%, 89.8 track paving kilometers are carried out on a front line laying CRTS III type plate ballastless track bed, 16132 track plates are arranged, the terrain along the line is low-middle mountain landform, the terrain is steep, the valley is vertical and horizontal, the fluctuation is large, the terrain is complex, the line is dense in the bridge and the tunnel, the road is tortuous, and the road condition is poor. In a short construction period, the construction of the CRTS III type slab ballastless track bed under the complex terrain is very challenging.
The invention combines the key points and characteristics of track slab 5 laying construction on the basis of referring to the CRTS III slab ballastless track bed construction technology of high-speed railway engineering at home and abroad, carries out key attack research on the aspects of track slab 5 organization guarantee, self-compacting concrete preparation guarantee, inverted paving method flow line laying, track slab 5 laying equipment, tool guarantee and the like, summarizes to form the mountain high-speed railway CRTS III slab 5 laying construction technology, researches and develops matched key equipment, solves the problem of CRTS III slab ballastless track bed laying construction under the dense condition of mountain bridge and tunnel, ensures the safe, high-quality and efficient completion of engineering construction, and fills the gap of the mountain construction technology.
Specifically, the reverse paving construction method for the CRTS III type track slab 5 in the mountainous area comprises the following steps:
step 1, arranging a plurality of mixing stations 6 in the construction line range, wherein the mixing stations 6 are used for supplying self-compacting concrete, and the distance between every two adjacent mixing stations 6 is not more than 20 km; the farthest distance between the target construction road section and the mixing station 6 is not more than 10km, and the transportation time is within 1h, so that the pouring requirement of the self-compacting concrete is met within 2 hours after the self-compacting concrete is discharged from the machine. Specifically, the setting of the site 6 of mixing is adjusted according to the existing site 6 of mixing of the deck within range, according to self-compacting concrete production needs, the site 6 of mixing is provided with viscosity modified material holding vessel, expanding agent holding vessel, sand silo and rubble storehouse, the quantity in viscosity modified material holding vessel, expanding agent holding vessel, sand silo and rubble storehouse should satisfy continuous 15 days self-compacting concrete volume demands.
Specifically, according to the distribution of the bridge and tunnel in the paving range, the road and the distribution condition of the abandoned slag field, 38 sections of pile plate walls or retaining wall cutting section storing plates are selected from 51 sections of roadbeds, wherein five circulating storing plate points are arranged, 150-channel 200cm cutting platforms on two sides of the roadbeds are selected as the storing plate points of the track plates 5, and the track plates 5 are stored in groups along the direction of the line. In the process of storing the track plate 5, the track plate 5 is stored in a platform between a ditch and a retaining wall in groups along the line direction, a prefabricated foundation support pad is adopted, the track plate 5 is vertically stored along the line direction, or 6-8 plates are stored in each group.
And selecting the base 4 as a logistics transportation channel to convey materials to the target construction road section. According to the CRTS III plate type ballastless track structure, a reinforced concrete base 4 is arranged below a track plate 5, the width of the base 4 of a roadbed section is 3.1m, and the width of the base 4 of a bridge and a tunnel section is 2.9m, so that the requirement of the travelling width is met. The transportation mode of the base 4 is matched with a one-way reverse paving construction method from far to near. Not only avoids a large amount of repetitive operations, but also greatly improves the construction efficiency and the construction quality.
Further specifically, as shown in fig. 2, the construction section is further divided into four construction sections according to the procedures, and the construction sections sequentially include a maintenance-demolition area, a pouring area, a fine adjustment area, and a coarse adjustment area from right to left, after a certain procedure operation in the current construction section is completed, a next procedure is performed in the current construction section, and then the construction operation in the certain procedure is continuously performed in an adjacent section; the whole construction route is completed by circularly propelling in this way.
Due to the limitation factor of the geographic environment, the construction configuration is limited, the left line 7 and the right line 8 of the track line are synchronously pushed, the left line 7 and the right line 8 are staggered to be constructed in one section, namely in the same construction section, when the left line 7 finishes the rough paving procedure, the fine paving procedure is directly carried out, and meanwhile, the right line 8 in the same section starts the rough paving procedure; therefore, uneven distribution caused by limited number of configured construction tools and delay of construction period are avoided; meanwhile, the continuity of each process can be improved, the construction tool cannot be insufficient or idle, and the overall construction efficiency is ensured.
Planning each section according to 30 plates, wherein the length of each section is about 168m, all sections are in seamless connection, according to the laying requirement of a track plate 5, 1 three 10t gantry cranes, 3 one self-sealing concrete pouring trolley, one truck-mounted crane, three flat cars and 25t truck crane are arranged in a construction section according to the construction requirement, and 500m self-sealing concrete forming templates are arranged.
The paving portal crane 1 adopts P24 rail routing, the coverage range is 675m, the traveling speed is 125m/min, the distance from a coarse paving area to a pouring area is about 500m, the traveling time is 4 minutes, the hoisting rope hanging time is 1min, the self-compacting concrete is poured within 10min, the pouring time of each plate can be controlled within 15min, 4 pieces of self-compacting concrete can be poured within 1 hour, and 7.5 hours are needed for 30 plates, so that the process flow requirement is met. The paving method has the advantages that the paving construction for the mountain track slabs 5 is high in efficiency, simple in process, seamless in connection to form flow line production, the daily paving progress can reach 180 m/day, and the paving is guaranteed to be carried out smoothly.
Before the slab paving construction, the slab is transported to the roadbed section from the track slab 5 field, and the track slabs 5 are stored on two sides. During plate paving, a truck crane is adopted to hoist the track plate 5 at the position of a roadbed storage plate, a flat car is installed, the track plate is transported to a plate paving point through a base 4, and then rough paving is carried out through a gantry crane 1. After the coarse paving, a total station is adopted to carry out fine adjustment operation on the track slab 5, and then a self-compacting concrete edge sealing template and an anti-floating device are installed. At last self-compacting concrete truck 2 passes through track board 5 to the construction district section transportation concrete to thick end of laying to 5 sides of track board are as supplementary direction base plane, self-compacting concrete truck 2 be provided with the direction base plane complex leading wheel of 5 both sides of track board. Self-compacting concrete is put into the turnover hopper, and gantry crane 1 transfers the turnover hopper to the point of filling, puts on filling platform truck 3, then the jacking is to filling technology height and is carried out the concrete and pour. And (4) removing the forming template after curing for three days with the mold, and transferring to a rough paving section for next circulation.
The pouring trolley 3 for the self-compacting concrete is provided with a lifting trolley and is used for placing a self-compacting concrete turnover hopper. The lifting of 1.65m to 2.8m is realized through 2 hydraulic cylinders, the height of 2.55m required by the self-compacting concrete pouring is met, and the pouring progress index of 10 min/slab can be reached. The swinging needle type speed reducer chain transmission is adopted to realize the walking function of the pouring trolley 3. The technical problems that the height of the gantry crane 1 is limited and the hopper cannot reach the height of a filling process are solved.
Specifically, because the plugging concrete that pours, observe the hole and pour requires to be higher than track face 5mm, it is short to cause the time of moisturizing after the maintenance, and it is big along with construction length increase maintenance work volume, is influenced by human factor and easily causes the maintenance to obtain guaranteeing, has the potential quality hazard to the later stage. The concrete curing mode of the existing CRTS III type track slab 5 pouring and observation hole is optimized and improved through technical research. The maintenance device uses a drip irrigation maintenance principle for reference, a 5kg small water bucket is used as a maintenance bucket, the maintenance bucket is placed on a PVC pipe with the length of 30cm, a hole is drilled at the bottom of the bucket, a transfusion hose is inserted, and a switch is arranged on the hose.
According to the construction method, the mode that the track slab 5 is stored nearby the roadbed is adopted, occupation of cultivated land is avoided, foundation construction amount is small, the slab storing and taking are convenient, the slab storing cost is low, secondary transfer efficiency of the track slab 5 is improved, and smooth laying of the track slab 5 of the ballastless track bed is guaranteed. In the construction process, the base 4 is used as a construction channel for transporting corresponding materials, so that a new road is prevented from being built, temporary land acquisition is avoided, and the construction road investment is saved. The whole process takes a mixing station as a reference point, and circulates in a one-way from a position far away from the mixing station to a direction close to the mixing station, so that a production line type construction process is formed, the operation is convenient and fast, the continuity is realized, the construction efficiency is greatly improved, and the construction cost is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A reverse paving construction method for a CRTS III type track slab in a mountainous area is characterized by comprising the following steps:
step 1, examining the distribution conditions of roads, bridges and tunnels in a construction line range, arranging a plurality of mixing stations in the construction line range, wherein the mixing stations are used for supplying self-compacting concrete, and the distance between every two adjacent mixing stations is not more than 20 km;
step 2, dividing the construction line into a plurality of construction sections, and performing unidirectional paving operation from one end far away from the mixing station to a position close to the mixing station in the construction sections, wherein double lines of the paving operation are pushed in a same-direction and crossed manner;
the plate paving operation sequentially comprises four working procedures of rough paving, fine adjustment, pouring and maintenance with a mold;
according to the working procedures, the construction section comprises four construction sections, after one working procedure operation of the current construction section is completed, the next working procedure is executed in the current construction section, and then the construction operation of the certain working procedure is continuously executed in the adjacent section; the whole construction route is completed by circularly propelling in this way.
2. The inverted paving construction method for the CRTS III type track slab in the mountainous area as claimed in claim 1, wherein in the step 1, 150-cm and 200-cm cutting platforms at two sides of the roadbed are selected as slab storage points of the track slab, and the track slab is stored in groups along the line direction; in the track plate storage process, a prefabricated foundation support pad is adopted, the track plate is vertically placed and stored along the line direction, and 6-8 plates are stored in each group.
3. The reverse paving construction method of the CRTS III track slab in the mountainous area as claimed in claim 2, wherein the base is selected as a logistics transportation channel to convey materials to a target construction section.
4. The reverse paving construction method of the CRTS III track slab in the mountainous area as claimed in claim 1, wherein the two-line co-directional cross propulsion specifically means that the left line and the right line are staggered by one section in the construction section during the paving operation.
5. The reverse paving construction method of the CRTS III type track slab in the mountainous area as claimed in claim 1, wherein in the step 2, according to four processes of the paving operation, the track slab stored nearby is firstly arranged in the construction section through rough paving; then finely adjusting the height and the distance of the arranged track slabs, and installing a forming template; and then, the self-compacting concrete is poured and the curing process with the mould is carried out.
6. The reverse paving construction method of the CRTS III type track slab in the mountainous area as claimed in claim 5, wherein in the step 2, during the construction process of the construction section, the truck crane hoists the track slab at a nearby slab storage point and loads the track slab on a flat car, the flat car transports the track slab to the construction section through the base, then the gantry crane is adopted to carry out rough paving operation in sequence according to the direction of the slab, after the rough paving process is finished, the total station is adopted to carry out fine adjustment operation of the track slab, and then the self-compacting concrete forming template and the anti-floating device are installed.
7. The reverse paving construction method of CRTS III track slabs in mountainous areas as claimed in claim 6, wherein during the pouring operation, the self-compacting concrete is transported to the position of the target construction section through the base transportation line, then the transfer hopper containing the self-compacting concrete is transported to the fine-tuned section through the gantry crane, the transfer hopper is placed on the pouring trolley through the gantry crane, and the transfer hopper is lifted to the required pouring height through driving the pouring trolley to pour the concrete.
8. The reverse paving construction method of the CRTS III track slab in the mountainous area as claimed in claim 7, wherein a self-compacting concrete transportation vehicle transports the self-compacting concrete to the construction section through the track slab, the side surface of the track slab is used as an auxiliary guide base surface, and the transportation vehicle is provided with guide wheels matched with the guide base surfaces on two sides of the track slab.
9. The inverted paving construction method of the CRTS III track slab in the mountainous area as claimed in claim 5, wherein in the process of carrying out the curing process with the mold, a curing barrel is adopted for curing, the barrel bottom of the curing barrel is connected with a liquid conveying hose, and the liquid conveying hose is provided with a switch for controlling the flow speed of liquid drops.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110239978.3A CN112962366A (en) | 2021-03-04 | 2021-03-04 | Reverse paving construction method for CRTS III type track slab in mountainous area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110239978.3A CN112962366A (en) | 2021-03-04 | 2021-03-04 | Reverse paving construction method for CRTS III type track slab in mountainous area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112962366A true CN112962366A (en) | 2021-06-15 |
Family
ID=76276424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110239978.3A Pending CN112962366A (en) | 2021-03-04 | 2021-03-04 | Reverse paving construction method for CRTS III type track slab in mountainous area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112962366A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115595836A (en) * | 2022-11-08 | 2023-01-13 | 中铁五局集团第六工程有限责任公司（Cn） | Construction method for subsection process of subway precast track slab track bed |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT505402A4 (en) * | 2007-06-22 | 2009-01-15 | Swietelsky Baugesellschaft M B | DEVICE AND METHOD FOR LAYING THRESHOLD ON A TRAY BED |
| CN101748665A (en) * | 2009-12-22 | 2010-06-23 | 中铁二局股份有限公司 | Fragment-free track slab pavement method |
| CN101768906A (en) * | 2009-12-31 | 2010-07-07 | 中铁四局集团有限公司 | Double-line construction method for double-block ballastless track bed plate of railway passenger special line |
| CN103911922A (en) * | 2013-01-03 | 2014-07-09 | 中铁十一局集团第一工程有限公司 | Movable railway self-compacting concrete placer |
| CN109518544A (en) * | 2018-12-29 | 2019-03-26 | 中铁五局集团第六工程有限责任公司 | A kind of subway precast track plate railway roadbed laying method |
| CN208668183U (en) * | 2018-08-27 | 2019-03-29 | 中交隧道工程局有限公司 | A kind of III plate-type ballastless track of CRTS perfusion peephole intelligence curing means |
| CN109853306A (en) * | 2018-12-17 | 2019-06-07 | 中铁四局集团有限公司 | Construction method of prefabricated track slab |
| CN210654460U (en) * | 2019-09-26 | 2020-06-02 | 中铁二局集团有限公司 | III type track boards strorage device of CRTS |
-
2021
- 2021-03-04 CN CN202110239978.3A patent/CN112962366A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT505402A4 (en) * | 2007-06-22 | 2009-01-15 | Swietelsky Baugesellschaft M B | DEVICE AND METHOD FOR LAYING THRESHOLD ON A TRAY BED |
| CN101748665A (en) * | 2009-12-22 | 2010-06-23 | 中铁二局股份有限公司 | Fragment-free track slab pavement method |
| CN101768906A (en) * | 2009-12-31 | 2010-07-07 | 中铁四局集团有限公司 | Double-line construction method for double-block ballastless track bed plate of railway passenger special line |
| CN103911922A (en) * | 2013-01-03 | 2014-07-09 | 中铁十一局集团第一工程有限公司 | Movable railway self-compacting concrete placer |
| CN208668183U (en) * | 2018-08-27 | 2019-03-29 | 中交隧道工程局有限公司 | A kind of III plate-type ballastless track of CRTS perfusion peephole intelligence curing means |
| CN109853306A (en) * | 2018-12-17 | 2019-06-07 | 中铁四局集团有限公司 | Construction method of prefabricated track slab |
| CN109518544A (en) * | 2018-12-29 | 2019-03-26 | 中铁五局集团第六工程有限责任公司 | A kind of subway precast track plate railway roadbed laying method |
| CN210654460U (en) * | 2019-09-26 | 2020-06-02 | 中铁二局集团有限公司 | III type track boards strorage device of CRTS |
Non-Patent Citations (5)
| Title |
|---|
| 徐振龙: "《山区高铁CRTS_型板式无砟轨道施工特点》", 《铁道建筑技术》 * |
| 樊齐旻等: "《CRTSⅢ型板式无砟轨道施工技术》", 《中国铁路》 * |
| 王东成: "《Ⅲ型板现场施工组织分析》", 《工程技术研究》 * |
| 王琦: "《浅谈CRTS__型板无砟轨道板施工组织分析》", 《建材与装饰》 * |
| 袁磊涛等: "《高速铁路CRTSⅢ型板自密实混凝土》", 《交通世界》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115595836A (en) * | 2022-11-08 | 2023-01-13 | 中铁五局集团第六工程有限责任公司（Cn） | Construction method for subsection process of subway precast track slab track bed |
| CN115595836B (en) * | 2022-11-08 | 2024-04-30 | 中铁五局集团第六工程有限责任公司 | Construction method for sub-section process of underground iron prefabricated track slab track bed |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103485288B (en) | A kind ofly pass through both wired double-deck jacking culvert construction technology | |
| CN102146796B (en) | Construction technology for inverted arch of two-track tunnel of high-speed railway | |
| CN102146799B (en) | Construction equipment for inverted arch of two-track tunnel of high-speed railway | |
| CN102359069A (en) | Existing line reinforcing method in under-crossing railway frame bridge small-included angle large-height inclined jacking construction | |
| CN109518544A (en) | A kind of subway precast track plate railway roadbed laying method | |
| CN106702912A (en) | Construction method of dismantling old beam top and introducing new bridge on existing railway | |
| CN108316344A (en) | A kind of construction method of subway station hall layer | |
| CN113389558B (en) | TBM (Tunnel boring machine) starting platform for narrow space and construction method thereof | |
| CN108708290B (en) | Box bridge frame hollow structure of small-radius railway curve unit and cast-in-place construction method | |
| CN204662270U (en) | A kind of case girder transferring system | |
| CN112962366A (en) | Reverse paving construction method for CRTS III type track slab in mountainous area | |
| CN202017493U (en) | Construction equipment for inverted arch of high-speed railway double-track tunnel | |
| CN101768906B (en) | Double-line construction method for double-block ballastless track bed plate of railway passenger special line | |
| CN210599005U (en) | TBM tunnel is faced upward and is encircleed piece lining structure | |
| CN105019357A (en) | Method for mounting specially-shaped precast bridge decks on open lattice steel beams of arched bridge | |
| CN104695315B (en) | Frame structure of deep foundation pit under existing railway and layered jacking method for construction of frame structure | |
| CN102561117A (en) | Logistical method for conveying ballastless tracks in twin-track tunnel in construction | |
| CN102628278B (en) | 'U-pipe pier' urban underground railroad | |
| CN104929045A (en) | Box girder transfer platform and girder feeding and fetching method | |
| CN102747693B (en) | Railway T-beam erecting construction method based on continuous beam laying reloading points | |
| CN210458918U (en) | Space stacked bridge structure | |
| CN214819538U (en) | Transverse bridge direction prefabricated beam yard located at bridge tail road base section | |
| CN113565522B (en) | Tunnel Boring Machine (TBM) station-passing bracket between mountain tunnels and station-passing method | |
| CN212403251U (en) | Low-cost precast beam field structure suitable for in roadbed scope | |
| CN113931074B (en) | Construction method for rapidly paving frame of railway bridge girder erection machine in emergency limit state of business line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |