Unmanned vertical arch and longitudinal connection integrated construction method
Technical Field
The invention relates to the technical field of tunnel construction, in particular to an unmanned vertical arch and longitudinal connection integrated construction method.
Background
With the progress of tunnel construction technology, large-scale mechanized construction is gradually developed, and unmanned vertical arches are developed by utilizing large-scale vertical arch trolleys and are gradually popularized. In order to realize the unmanned vertical arch, besides taking the folded steel arch frame in a hinged mode in the circumferential direction into consideration, the longitudinal connection mode also limits the construction efficiency of the unmanned vertical arch.
At present, the unmanned vertical arch is longitudinally connected in a form of welded steel bars and steel bar meshes, workers are required to stand on the trolley mechanical arm to finish welding construction, and workers are exposed to unsupported surrounding rocks in the construction process, so that the efficiency is improved compared with that of the manual vertical arch, but the unmanned vertical arch still has higher risk, the welding time is longer, and the whole construction period of the unmanned vertical arch construction is also influenced. Besides, a scheme of simultaneously erecting a plurality of arches is adopted, reinforcement meshes and connecting ribs are prefabricated among the arches in advance, and then the junctions of the reinforcement meshes are welded. The method has the advantages that the safety of workers is improved, field welding is still needed, the efficiency is required to be improved, meanwhile, the requirement on equipment is high, and the early investment cost is high.
The space coordinates of arches do not need to be considered in conventional unmanned arch construction, only the space between arches needs to be controlled, arch erection is completed, then longitudinal connecting steel bars or steel bar meshes are welded manually, and when the longitudinal connection is constructed manually, the vertical connecting steel bars or steel bar meshes are required to be exposed to unsupported surrounding rocks, so that potential safety hazards exist, and the construction efficiency is lower.
Disclosure of Invention
The invention aims to provide an unmanned vertical arch and longitudinal connection integrated construction method, which realizes the unmanned whole process of vertical arch and longitudinal connection, and workers do not need to be exposed to unsupported surrounding rocks, so that the safety is high, the construction efficiency is high, and the construction precision is high.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides an unmanned vertical arch and longitudinal connection integrated construction method, which is based on a rapid longitudinal connection structure for the unmanned vertical arch and comprises the following steps:
Step one, an automatic positioning system and an automatic building system of a folding steel arch position model are positioned;
step two, assembling each folding steel arch, each splicing component and each longitudinal connecting rod outside the hole;
thirdly, confirming the space position coordinates of the position to be constructed, wherein the space position coordinates of the position to be constructed are the space position coordinates of the tunnel face or the space position coordinates of the last folding steel arch;
Step four, the vertical arch trolley conveys the folding steel arch currently to be constructed to a position to be constructed;
Step five, the vertical arch trolley expands the main body folding part of the folding steel arch currently to be constructed;
step six, adjusting the space position of the folding steel arch to be constructed currently to align the splicing component of the upper folding steel arch with the longitudinal connecting rod on the folding steel arch to be constructed currently;
step seven, after the alignment of the inserting component and the longitudinal connecting rod is confirmed, controlling the vertical arch trolley to complete the longitudinal inserting of the inserting component and the longitudinal connecting rod;
step eight, unfolding an arch foot folding part of a folding steel arch to be constructed currently by the vertical arch trolley;
And step nine, finishing the erection of the folding steel arch to be constructed currently and automatically establishing a space position model, and repeating the steps three to nine until the erection of all the folding steel arches is finished.
Preferably, the automatic positioning system is used for determining the spatial position of the folding steel arch currently to be constructed by arranging position monitoring points at the tail end of the lifting arm of the arch-erecting trolley and at two sides of the body of the arch-erecting trolley and carrying out measurement by combining with a total station or other measuring equipment.
Preferably, the automatic building system of the folding steel arch position model measures the final spatial position signal of the last folding steel arch by using a total station, transmits the final spatial position signal to a computer in a wired or wireless mode, automatically builds a digital spatial model on the computer, and transmits a control signal to the arch erecting trolley by the computer.
Preferably, the space position of the last folding steel arch frame is determined by combining real-time measurement of a total station, and the space positions of the vertical arch trolley and the folding steel arch frame to be constructed at present are determined by alternately and circularly measuring position monitoring points at the tail end of the lifting arm and at two sides of the vehicle body through the total station; after the erection of the last folding steel arch is completed, space control coordinate points of the folding steel arch are simultaneously generated in a computer, when the current folding steel arch to be constructed is constructed, the longitudinal connecting rod on the current folding steel arch to be constructed is controlled to be aligned with the splicing component of the last folding steel arch by using the vertical arch trolley by taking the last folding steel arch as a reference, splicing and splicing are completed, the position information of the current folding steel arch to be constructed is recorded in the computer, a digital twin model of the folding steel arch is built in real time, and unmanned construction of each folding steel arch is completed in a circulating mode.
Preferably, when the longitudinal connecting rod on the folding steel arch to be constructed currently is spliced with the splicing component of the upper folding steel arch, whether the longitudinal connecting rod on the folding steel arch to be constructed currently is aligned with the splicing component of the upper folding steel arch is judged through manual assistance or artificial intelligent image processing identification, and the construction of the vertical arch trolley is controlled.
Preferably, the unmanned vertical arch quick longitudinal connection structure comprises a folding steel arch, a plug-in component and a longitudinal connecting rod, wherein the plug-in component is detachably connected with one side of the folding steel arch, the plug-in component is provided with a plug-in hole, one end of the longitudinal connecting rod is detachably connected with the other side of the folding steel arch, the other end of the longitudinal connecting rod is provided with a plug-in connector, the plug-in connector is matched with the plug-in hole, and the plug-in connector of the longitudinal connecting rod is plugged in the plug-in hole of the plug-in component on the adjacent folding steel arch to realize the connection of the adjacent folding steel arch.
Preferably, the folding steel arch is provided with a first internal thread, the plug-in component is provided with a first external thread, and the folding steel arch and the plug-in component are connected through the first internal thread and the first external thread;
The folding steel arch is provided with a second internal thread, one end of the longitudinal connecting rod is provided with a second external thread, and the folding steel arch is connected with the longitudinal connecting rod through the second internal thread and the second external thread.
Preferably, the folding steel arch comprises a first component, a second component and a third component, the second component and the third component are symmetrically arranged at two ends of the first component, the first component is hinged with the second component and the third component respectively, and the first component, the second component and the third component are respectively provided with the plug-in component and the longitudinal connecting rod.
Preferably, the first assembly comprises at least one first sub-assembly, adjacent the first sub-assembly being hinged; the second assembly comprises at least one second subassembly, adjacent the second subassembly being hinged, and the third assembly comprises at least one third subassembly, adjacent the third subassembly being hinged.
Preferably, the longitudinal connecting rods are arranged perpendicular to the folding steel arch.
Compared with the prior art, the invention has the following technical effects:
The folding steel arch frame is detachably connected with the inserting component and the longitudinal connecting rod respectively, the rapid longitudinal connecting structure for the unmanned vertical arch can be assembled outside a tunnel, the rapid longitudinal connecting structure for the unmanned vertical arch is inserted in the tunnel, the construction efficiency is improved, the folding steel arch frame is simple in structure and low in cost, and during construction, only the inserting component and the longitudinal connecting rod are required to be inserted, workers are not required to be exposed to unsupported surrounding rocks, and the folding steel arch frame is safer.
The invention can be used for identifying the positions of the vertical arch trolley and the crane arm, assisting in the construction of the vertical arch trolley, recording the space position coordinates of the upper folding steel arch frame when the construction of the vertical arch is completed, and automatically establishing a folding steel arch frame space position model to provide a reference for the construction of the lower folding steel arch frame. The invention can realize the whole process of vertical arch and longitudinal connection without being exposed by workers under unsupported surrounding rock, and has high safety, high construction efficiency and high construction precision.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of a folding steel arch of the present invention;
FIG. 2 is a front view of the plug member of the present invention;
FIG. 3 is a schematic view of the plug members, longitudinal connecting rods and folding arch connections of the present invention;
FIG. 4 is a flow chart of an integrated construction method for unmanned arch and longitudinal connection of the invention;
FIG. 5 is a schematic illustration of an application of the unmanned arch and longitudinal connection integrated construction method of the present invention;
Wherein: 1: a plug member; 1-1: a plug hole; 2: folding a steel arch; 2-1: a first component; 2-2: a second component; 2-3: a third component; 3: a hinged joint; 4-1: a first external thread; 4-2: a second external thread; 5: a longitudinal connecting rod; 6: a plug; 7: a total station; 8: a vertical arch trolley; 8-1: monitoring points; 8-2: and (5) a crane arm.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by a person skilled in the art based on the embodiments of the invention without any inventive effort, are intended to fall within the scope of the invention.
The invention aims to provide an unmanned vertical arch and longitudinal connection integrated construction method, which realizes the unmanned whole process of vertical arch and longitudinal connection, and workers do not need to be exposed to unsupported surrounding rocks, so that the safety is high, the construction efficiency is high, and the construction precision is high.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1 to 5: the embodiment provides an unmanned vertical arch and longitudinal connection integrated construction method, which is based on a rapid longitudinal connection structure for the unmanned vertical arch and comprises the following steps:
step one, an automatic positioning system and an automatic building system for a position model of a folding steel arch 2 are positioned;
In the embodiment, the automatic positioning system is used for determining the spatial position of the folding steel arch 2 to be constructed currently by arranging position monitoring points 8-1 at the tail end of the lifting arm 8-2 of the vertical arch trolley 8 and at two sides of the body of the vertical arch trolley 8 and carrying out measurement by combining with a total station 7 or other measuring equipment;
in the embodiment, the automatic building system of the position model of the folding steel arch 2 measures the final spatial position signal of the upper folding steel arch 2 by using the total station 7, and transmits the final spatial position signal to a computer in a wired or wireless mode, automatically builds a digital spatial model on the computer, and then transmits a control signal to the arch erecting trolley 8 by the computer;
Step two, splicing each folding steel arch 2, each plug-in component 1 and each longitudinal connecting rod 5 outside the hole, and respectively connecting each plug-in component 1 and each longitudinal connecting rod 5 with the folding steel arch 2 to realize the preparation of a plurality of arch frames, wherein the folding steel arch 2 is in a folding state;
Specifically, the quick longitudinal connection structure for the unmanned vertical arch comprises a folding steel arch 2, plug-in components 1 and longitudinal connecting rods 5, wherein the plug-in components 1 are detachably connected with one side of the folding steel arch 2, the plug-in components 1 are provided with plug-in holes 1-1, one end of each longitudinal connecting rod 5 is detachably connected with the other side of the folding steel arch 2, the other end of each longitudinal connecting rod 5 is provided with a plug-in connector 6, the plug-in connectors 6 are matched with the plug-in holes 1-1, the positions and the number of the plug-in components 1 and the longitudinal connecting rods 5 are in one-to-one correspondence, the longitudinal connecting rods 5 are vertically arranged with the folding steel arch 2, the length of each longitudinal connecting rod 5 is set according to the distance between every two arch frames in a tunnel design, for example, the length of each longitudinal connecting rod 5 can be 0.8m, and the plug-in connectors 6 of each longitudinal connecting rod 5 are plugged in the plug-in holes 1-in the adjacent folding steel arch 2, so that connection of the adjacent folding steel arch 2 is realized.
In this embodiment, the folding steel arch 2 is provided with a first internal thread, the plug member 1 is provided with a first external thread 4-1, and the folding steel arch 2 and the plug member 1 are connected through the first internal thread and the first external thread 4-1.
In this embodiment, the folding steel arch 2 is provided with a second internal thread, one end of the longitudinal connecting rod 5 is provided with a second external thread 4-2, the folding steel arch 2 and the longitudinal connecting rod 5 are connected through the second internal thread and the second external thread 4-2, the plug-in component 1 and the longitudinal connecting rod 5 are preferably connected in a plug-in mode, and a construction mode suitable for unmanned longitudinal quick connection such as a locking mode, a bolt mode, a mortise-tenon mode and the like can be used.
In this embodiment, a funnel-shaped guiding hole is arranged at the outer side of the plugging hole 1-1, the guiding hole plays a guiding role, the plugging connector 6 is mushroom-head-shaped or conical, and the plugging connector 6 passes through the guiding hole and then enters the plugging hole 1-1 to realize connection between the plugging connector 6 and the plugging member 1.
In this embodiment, the material of the plugging member 1 and the material of the longitudinal connecting rod 5 are the same as those of the folded steel arch 2, and the plugging member 1 and the longitudinal connecting rod 5 may be made of other materials meeting the mechanical strength, for example, the plugging member 1 and the longitudinal connecting rod 5 may be made of materials with strength parameters higher than those of the folded steel arch 2.
In this embodiment, the foldable steel arch 2 includes a first component 2-1, a second component 2-2 and a third component 2-3, where the first component 2-1 is a main body folding portion of the foldable steel arch, the second component 2-2 and the third component 2-3 are arch leg folding portions of the foldable steel arch, and the arch leg folding portions have a certain adjustability so as to adapt to the uncertainty of field overexcitation in tunnel vertical arch construction, the arch leg folding portions can use folding type, also can use telescopic type, the second component 2-2 and the third component 2-3 are symmetrically arranged at two ends of the first component 2-1, two ends of the first component 2-1 are respectively provided with a hinge joint 3 for being hinged with the second component 2-2 and the third component 2-3, the hinge joint 3 preferably adopts a buckle type, or an adhesive type, interference type, a bolt type, etc., and the first component 2-1, the second component 2-2 and the third component 2-3 are all provided with a plug member 1 and a longitudinal connecting rod 5.
Further, the first assembly 2-1 comprises at least one first sub-assembly, adjacent first sub-assemblies being hinged; the second component 2-2 comprises at least one second sub-component and adjacent second sub-components are hinged, and the third component 2-3 comprises at least one third sub-component and adjacent third sub-components are hinged.
Step three, confirming the space position coordinates of the position to be constructed, wherein the space position coordinates of the position to be constructed are the space position coordinates of the tunnel face or the space position coordinates of the upper folding steel arch 2;
step four, conveying the folding steel arch 2 to be constructed currently to a position to be constructed by the vertical arch trolley 8;
step five, the vertical arch trolley 8 expands the main body folding part of the folding steel arch 2 to be constructed currently;
Step six, adjusting the spatial position of the folding steel arch 2 to be constructed currently to align the splicing component 1 of the folding steel arch 2 of the previous truss with the longitudinal connecting rod 5 on the folding steel arch 2 to be constructed currently;
In the embodiment, when the longitudinal connecting rod 5 on the folding steel arch 2 to be constructed currently is spliced with the splicing member 1 of the folding steel arch 2 of the last truss, whether the longitudinal connecting rod 5 on the folding steel arch 2 to be constructed currently is aligned with the splicing member 1 of the folding steel arch 2 of the last truss or not is judged by manual assistance, and the construction of the vertical arch trolley 8 is controlled;
Or in the embodiment, when the longitudinal connecting rod 5 on the folding steel arch 2 to be constructed currently is spliced with the splicing member 1 of the folding steel arch 2 of the last truss, judging whether the longitudinal connecting rod 5 on the folding steel arch 2 to be constructed currently is aligned with the splicing member 1 of the folding steel arch 2 of the last truss or not through artificial intelligent image processing and identification, and controlling the construction of the vertical arch trolley 8;
step seven, after confirming that the plug-in component 1 and the longitudinal connecting rod 5 are aligned, controlling the vertical arch trolley 8 to complete the longitudinal plug-in of the plug-in component 1 and the longitudinal connecting rod 5;
Step eight, the vertical arch trolley 8 expands the arch foot folding part of the folding steel arch 2 to be constructed currently;
And step nine, finishing the erection of the folding steel arch 2 to be constructed currently and automatically establishing a space position model, and repeating the steps three to nine until finishing the erection of all the folding steel arches 2.
In the embodiment, the spatial position of the last folding steel arch 2 is determined by combining real-time measurement of a total station 7, and the spatial positions of the vertical arch trolley 8 and the folding steel arch 2 to be constructed at present are determined by alternately and circularly measuring the tail ends of the lifting arms 8-2 and the position monitoring points 8-1 on the two sides of the vehicle body through the total station 7; after the construction of the folding steel arch 2 of the previous truss is completed, space control coordinate points of the folding steel arch 2 are simultaneously generated in a computer, when the folding steel arch 2 to be constructed currently is constructed, the longitudinal connecting rods 5 on the folding steel arch 2 to be constructed currently are controlled to be aligned with the splicing members 1 of the folding steel arch 2 of the previous truss by using the vertical arch trolley 8 as a reference, splicing and splicing are completed, the position information of the folding steel arch 2 to be constructed currently is recorded in the computer at the same time after the completion, a digital twin model of the folding steel arch 2 is built in real time, and unmanned construction of each folding steel arch 2 is completed circularly.
The hinge joint 3 of the folding steel arch 2 adopts a buckle type, the plug-in component 1 and the longitudinal connecting rod 5 are connected through plug-in connection, the construction efficiency can be improved by the out-of-tunnel assembly, the structure is simple, the cost is low, and the construction is safer; the automatic positioning system determines the space position of the folding steel arch 2 to be constructed currently by installing position monitoring points 8-1 at the tail ends of the lifting arms 8-2 of the vertical arch trolley 8 and on two sides of the body of the vertical arch trolley 8 and combining the real-time measurement of the total station 7; the automatic building system of the position model of the folding steel arch 2 combines the final spatial position signal of the last folding steel arch 2 given by the total station 7 to automatically build a digital spatial model on a computer. The embodiment can realize the whole process of vertical arch and longitudinal connection without humanization, workers do not need to be exposed under unsupported surrounding rocks, the safety is high, the construction efficiency is high, and the construction precision is high.
The principles and embodiments of the present invention have been described in this specification with reference to specific examples, the description of which is only for the purpose of aiding in understanding the method of the present invention and its core ideas; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.