The invention content is as follows:
the invention aims to overcome the defects in the prior art and provides a trackless construction method of an urban rail, which can carry out sectional construction without building a temporary walking rail.
The invention provides the following technical scheme:
a trackless construction method of an urban rail comprises the following steps: A. the self-deformation tire type track construction vehicle enters a tunnel in a construction interval, and a traveling device on the self-deformation tire type track construction vehicle forms rail change, so that the traveling device is in contact with the tunnel wall, and the self-deformation tire type track construction vehicle can move on the inner wall of the arc tunnel;
B. materials such as reinforcing steel bars, baffles and the like for pouring the base body are conveyed to a working surface in a tunnel in a construction area by the self-adaptive section engineering transport vehicle;
C. unloading the materials on the self-adaptive section engineering transport vehicle on the working face by the self-deformation tire type track construction vehicle;
D. the construction personnel starts construction operation to bundle the steel bar matrix, after the steel bar matrix at the working section is bundled, a circle of vertically distributed baffles are arranged around the steel bar matrix, and the height of the leveling reference surface is marked on the baffles;
E. the self-deformation tire type track construction vehicle and the self-adaptive section engineering transport vehicle continue to go deep into the tunnel to transport the material for binding the reinforcement matrix, so that workers continue to bind the reinforcement matrix of the next section;
F. the self-deformation tire type concrete construction vehicle enters a tunnel, a traveling device of the self-deformation tire type concrete construction vehicle forms track change, the traveling device is enabled to be in contact with the tunnel wall, the self-deformation tire type track construction vehicle can move to a working surface on the inner wall of the arc tunnel, concrete is poured on a steel bar substrate in the baffle plate, and therefore a ballast bed substrate is formed;
G. after the roadbed matrix poured with concrete is solidified, the self-adaptive section engineering transport vehicle transports the prefabricated roadbed slab, the prefabricated roadbed slab on the self-adaptive section engineering transport vehicle is lifted down by the self-deformation tire type track construction vehicle, the position of the prefabricated roadbed slab is preliminarily adjusted, and the prefabricated roadbed slab is placed on the roadbed matrix after being adjusted in place;
H. a group of track bed adjusting tools are uniformly distributed on the prefabricated track bed plate, the position of the prefabricated track bed plate is finely adjusted, after the position of the prefabricated track bed plate is adjusted in place, self-deformation tire type concrete construction vehicles load self-compacting concrete to enter a tunnel, and then a traveling device of the self-deformation tire type concrete construction vehicles forms track change, so that the traveling device is in contact with the wall of the tunnel, the self-deformation tire type track construction vehicles can move to the upper part of the prefabricated track bed plate on the inner wall of the arc tunnel, self-compacting concrete is poured into self-compacting holes in the prefabricated track bed plate, and the prefabricated track bed plate is fixedly connected with the upper surface of a track bed base body;
l, laying steel rails on the installed prefabricated bed plate.
On the basis of the technical scheme, the following further technical scheme can be provided:
when the adaptive section engineering transport vehicle meets the self-deformation tire type track construction vehicle or the self-deformation tire type concrete construction vehicle meets the self-deformation tire type track construction vehicle in the steps, the self-deformation tire type track construction vehicle further changes the track, the width between the supporting legs of the self-deformation tire type track construction vehicle is widened, and the rack of the self-deformation tire type track construction vehicle is raised, so that other construction machines such as the adaptive section engineering transport vehicle or the self-deformation tire type concrete construction vehicle can pass through the self-deformation tire type track construction vehicle.
The invention has the advantages that:
according to the technical scheme provided by the invention, temporary running rails do not need to be erected when the rails are constructed in the tunnel, the working procedures of the conventional rail construction method are reduced, the service time is saved, and the major potential safety hazard caused by the infirm installation foundation of the temporary running rails and the damage to the inner wall of the tunnel when the temporary running rails are erected are avoided. In addition, when the adaptive section engineering transport vehicle meets the self-deformation tire type track construction vehicle or the self-deformation tire type concrete construction vehicle meets the self-deformation tire type track construction vehicle, the adaptive section engineering transport vehicle and the self-deformation tire type concrete construction vehicle can penetrate under the self-deformation tire type track construction vehicle after rail change, so that the technical scheme can realize segmented local construction in the tunnel, and the efficiency of track construction is greatly improved.
The specific implementation mode is as follows:
a trackless construction method of an urban rail comprises the following steps:
A. the self-deformation tire type track construction vehicle enters a tunnel in a construction interval, and a traveling device on the construction vehicle forms rail change, so that the traveling device is in contact with the tunnel wall, and the self-deformation tire type track construction vehicle can move on the inner wall of the arc tunnel. Before the step is carried out and the construction equipment enters the field, the base surface at the bottom in the tunnel is cleaned, and the garbage is removed, so that the base surface is clean.
B. And the self-adaptive section engineering transport vehicle transports the material for binding the steel bar matrix to a working surface in a tunnel in a construction interval.
C. The self-deformation tire type track construction vehicle unloads materials on the self-adaptive section engineering transport vehicle on a working face.
D. The constructor starts the construction operation to tie up the steel bar basal body, after the steel bar basal body at the working section is tied up, a circle of baffle plates which are vertically distributed are arranged around the steel bar basal body, and the height of the concrete to be poured and formed is marked on the baffle plates.
E. And d, continuously conveying the materials for binding the steel bar matrix into the tunnel by the self-deformation tire type track construction vehicle and the self-adaptive section engineering transport vehicle so as to ensure that the constructor in charge of the step d continuously carries out the construction of the steel bar matrix in the next working section.
F. The self-deformation tire type concrete construction vehicle enters the tunnel, and the traveling device of the self-deformation tire type concrete construction vehicle performs rail transfer, so that the traveling device is in contact with the tunnel wall, and the self-deformation tire type concrete construction vehicle can move to a working surface on the inner wall of the arc tunnel.
After the self-deformation tire type concrete construction vehicle enters the working face, the traveling device of the self-deformation tire type concrete construction vehicle stretches across the construction face, so that the traveling device runs on the arc tunnel wall, and then concrete is poured on the steel bar matrix in the baffle to form a roadbed matrix. And f, after the constructor responsible for the step f finishes the construction of the section, continuing to go deep into the tunnel, and continuing to perform the operation of the step f in the next section.
G. After the roadbed matrix poured with concrete is solidified, the prefabricated roadbed slab is transported into the self-adaptive section engineering transport vehicle, the prefabricated roadbed slab on the self-adaptive section engineering transport vehicle is lifted down by the self-deformation tire type track construction vehicle, the position of the prefabricated roadbed slab is preliminarily adjusted by a lifting device on the self-deformation tire type track construction vehicle, and the prefabricated roadbed slab is placed on the roadbed matrix after the prefabricated roadbed slab is adjusted in place.
H. A set of ballast bed adjusting tools are uniformly distributed on the outer wall of the prefabricated ballast bed plate, the prefabricated ballast bed plate is finely adjusted in position, after the position of the prefabricated ballast bed plate is adjusted in place, self-compacting concrete is loaded by a self-deformation tire type concrete construction vehicle and enters a tunnel, then the self-compacting concrete is moved to the upper side of the prefabricated ballast bed plate, and the self-compacting concrete is poured into a self-compacting hole in the prefabricated ballast bed plate, so that the prefabricated ballast bed plate is fixedly connected with the upper surface of a ballast bed base body, and the installation of the prefabricated ballast bed plate is completed.
And after the constructor responsible for the steps G and H finishes the construction of the section, the constructor can go deep into the tunnel and continue to carry out the operations of the steps G and H in the next section.
And L, paving the steel rail on the installed prefabricated bed plate, and finely adjusting the steel rail.
And finally, carrying out quality inspection on the laid steel rail, and debugging and testing.
The ballast bed adjusting tool mentioned in the step H is a public number: CN108411718A, and therefore its structure is not described herein in detail.
The following describes the structures of a self-deformation tire type track construction vehicle, a self-adaptive section engineering transport vehicle and a self-deformation tire type concrete construction vehicle:
the self-deformation tire type track construction vehicle as shown in fig. 5 and 6 comprises a frame 1, a hoisting device 9 is arranged below the frame 1, a group of rail-changing jacking devices are connected to two sides of the frame 1 in a sliding manner, and each rail-changing jacking device comprises: each horizontal guide pipe 2 is connected with a vertical sleeve 3; the supporting tube 5 is sleeved on the lower side of each vertical sleeve 3, and the traveling device 7 is hinged to the lower side of the supporting tube 5 of the rail-changing jacking device.
The frame 1 at the two sides of the hoisting device 9 is also provided with a supporting platform 8, the supporting platform 8 is provided with a power system formed by a generator, a control cabinet, a hydraulic oil tank and a gear pump motor which are mutually matched,
a horizontal oil cylinder is arranged in the horizontal guide pipe 2, the horizontal guide pipe 2 can be controlled to stretch out and draw back along the horizontal direction through the horizontal oil cylinder, and then the traveling device 7 is driven to form a track change, and further the span of the self-deformation tire type track construction vehicle is controlled.
The vertical sleeve 3 is provided with a longitudinal oil cylinder which is connected and matched with the supporting tube 5, and the longitudinal oil cylinder can control the extension and retraction of the supporting tube 5 so as to control the longitudinal height of the rack.
An adjusting oil cylinder connected and matched with the walking device 7 is arranged in the supporting tube 5, the walking device 7 can deflect by jacking an output shaft of the adjusting oil cylinder, and therefore the walking device 7 has the ability of walking on the arc-shaped inner wall of the tunnel.
The self-deformation tire type track construction vehicle is a device produced by the company, belongs to the prior art, and has the patent application number of 201710380054.9, so the structure of the self-deformation tire type track construction vehicle is only briefly explained here.
As shown in fig. 1 and 2, the self-adaptive section engineering transport vehicle comprises a vehicle body 11, wherein a set of walking wheels 12 are arranged on the vehicle body 11, power devices 14 correspondingly matched with the walking wheels 12 are arranged on the vehicle body 11, control chambers 13 are arranged at two ends of the vehicle body 1, a material loading plate 15 is arranged at the upper part of the vehicle body 1, and a set of material limiting columns 15a are uniformly distributed on the material loading plate 15. Due to the special driving environment in the tunnel, workers need to drive the adaptive section engineering transport vehicle in the control room with the same driving direction.
The adaptive cross-section engineering transport vehicle is a device produced by the company, belongs to the prior art, and has the patent application number of 201520267607.6, so the detailed structure of the adaptive cross-section engineering transport vehicle is not described in detail. The difference of the self-adaptation section engineering transport vechicle in this scheme and above-mentioned prior art lies in that frame one end does not set up discharge apparatus, and the interval between two walking wheels 12 on the self-adaptation section engineering transport vechicle width direction will be greater than the width of reinforcing bar base member, makes the self-adaptation section engineering transport vechicle walk the wheel and can not press the reinforcing bar base member when marcing in tunnel 30 like this.
As shown in fig. 3 and 4, the self-deformation tire type concrete construction vehicle includes a vehicle frame 21, a concrete mixing tank 22 is disposed on the vehicle frame 21, a group of rail-changing jacking devices are uniformly distributed on the vehicle frame 21, a traveling device is connected to each rail-changing jacking device, and the structures of the rail-changing jacking devices and the traveling devices are the same as those of the rail-changing jacking devices and the traveling devices in the self-deformation tire type rail construction vehicle, so they are not described herein. The frame 21 is also provided with a control chamber 23 correspondingly matched with the concrete mixing tank 22, the track-changing jacking device and the travelling device, and the control chamber is internally provided with a control board for controlling the concrete mixing tank 22, the track-changing jacking device and the travelling device.
Through the self-deformation tire type track construction vehicle, the self-adaptive section engineering transport vehicle and the self-deformation tire type concrete construction vehicle, the vehicle can run on the arc-shaped inner wall of the tunnel 30, the process that the temporary walking rail of the construction equipment needs to be erected in the tunnel 30 before construction in the prior art is omitted, the preparation period before construction is greatly saved, the construction cost is reduced, and the damage to the inner wall of the tunnel 30 when the temporary walking rail is erected is avoided.
Because the reinforcement matrix 40 is located at the bottom of the tunnel 30, and the wheels of the self-deformation tire type track construction vehicle, the self-adaptive section engineering transport vehicle and the self-deformation tire type concrete construction vehicle all walk on the arc-shaped inner wall of the tunnel when entering and exiting the tunnel 30, the reinforcement matrix cannot be pressed. Therefore, after the concrete is poured into the reinforcement matrix 40, even before the concrete is not solidified to form the roadbed matrix, the movement of the construction machines such as the self-deformation tire type track construction vehicle, the self-adaptive section engineering transport vehicle and the self-deformation tire type concrete construction vehicle in the tunnel 30 is not influenced, and the problem that the construction equipment is limited to enter and exit the tunnel 30 before the roadbed matrix is formed in the prior art is effectively solved. The method effectively improves the continuity of construction operation and shortens the construction period.
As shown in fig. 2, 4 and 6, during the whole construction process, when the self-deformation tire type track construction vehicle meets other construction equipment such as a self-adaptive section engineering transport vehicle or a self-deformation tire type concrete construction vehicle or another self-deformation tire type track construction vehicle, the horizontal guide pipes on the two sides of the rack are controlled by the control cabinet to further extend outwards by the staff on the supporting platform of the self-deformation tire type track construction vehicle, so that the span under the rack is further increased, then the support pipes are controlled to extend out, the height under the rack is increased, and meanwhile, the walking device is controlled to deflect outwards, so that the walking device can run to the higher arc-shaped inner wall in the tunnel. Enough space is reserved below the self-deformation tire type track construction vehicle, and other construction equipment such as a self-adaptive section engineering transport vehicle, a self-deformation tire type concrete construction vehicle or another self-deformation tire type track construction vehicle can pass through the frame to complete vehicle crossing, so that the position conversion of the construction equipment in the tunnel is realized.
The construction method can be used for progressive one-way construction from one end of the tunnel to the other end of the tunnel, and can also be used for head-to-head two-way construction from two ends of the tunnel to the middle part in the tunnel.
The following specific examples are given by taking 150 m as the construction length of one work section:
in the first working day, the 300 m steel bar matrix is bundled and poured in the first working section and the second working section, so that a ballast bed matrix is formed on the base surface of the tunnel;
on the second working day, mounting a prefabricated roadbed with the length of 150 meters on the roadbed matrix of the first working section, and simultaneously binding and pouring a reinforcing steel bar matrix with the length of 150 meters in the third working section;
and in the third working day, 150 meters of steel rail is paved on the first working section, and 150 meters of prefabricated ballast bed installation and 150 meters of reinforcing steel bar matrix binding and pouring in the fourth working section are simultaneously carried out.
According to the construction period, 3 working days are needed for completing the laying of the steel rail with the length of 150 meters, and the laying of the steel rail with the length of 50 meters can be completed in each working day on average.
In actual construction, the steel bar matrix can be completely bundled and poured according to the example in the above example, and then the prefabricated track bed installation and the steel rail laying are sequentially performed on the steel bar matrix.