CN112431612A - Quick construction pin-connected panel platform truck suitable for flat hole of super large span room - Google Patents
Quick construction pin-connected panel platform truck suitable for flat hole of super large span room Download PDFInfo
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- CN112431612A CN112431612A CN202010348163.4A CN202010348163A CN112431612A CN 112431612 A CN112431612 A CN 112431612A CN 202010348163 A CN202010348163 A CN 202010348163A CN 112431612 A CN112431612 A CN 112431612A
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- 238000010276 construction Methods 0.000 title claims abstract description 140
- 230000002787 reinforcement Effects 0.000 claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 238000010438 heat treatment Methods 0.000 claims abstract description 33
- 238000009415 formwork Methods 0.000 claims description 25
- 230000007246 mechanism Effects 0.000 claims description 9
- 238000009412 basement excavation Methods 0.000 claims description 7
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 239000010410 layer Substances 0.000 description 31
- 238000012423 maintenance Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
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Abstract
The invention discloses a rapid construction assembly type trolley suitable for a super-large-span flat grotto, which comprises a concrete lining construction assembly and a reinforcement construction assembly, wherein the concrete lining construction assembly and the reinforcement construction assembly are arranged in parallel to a tunnel face; the concrete lining construction assembly and the steel bar binding construction assembly are both arranged on the walking portal frame assembly; the top of the concrete lining construction assembly is provided with a plurality of top template modules, and two sides of the concrete lining construction assembly are provided with a plurality of side template modules; each top template module and each side template module are provided with a heating device; the invention meets the construction requirement of the ultra-large span flat cavern, and the concrete lining construction assembly and the reinforcement construction assembly are respectively arranged on the walking portal frame assembly, so that reinforcement and concrete secondary lining can be simultaneously poured, and the construction progress is accelerated.
Description
Technical Field
The invention belongs to the technical field of tunnel concrete lining construction, and particularly relates to a rapid construction assembly type trolley suitable for a super-large-span flat grotto.
Background
Along with the development and utilization of underground space, more and more large-span and large-section underground projects are built to meet the use function, in particular to underground powerhouses of hydropower stations, underground railway stations of rail transit and multi-line railway tunnel projects. The underground engineering is mainly constructed by an open excavation method or a shallow-buried underground excavation method, and the mechanization level is low.
At present, research on ultra-large span tunnels mainly focuses on the aspects of civil engineering construction technologies such as tunnel excavation methods and excavation technologies, equipment matched with the construction technologies is few and few in development research, particularly the field of concrete lining construction equipment of ultra-large span caverns is very boring and old, and only few researchers develop the research and development work of large-span two-lining construction trolleys.
The major structure of the trolley is not substantially different from the existing trolley, the applicable span size range of the trolley is not more than 20m to the maximum extent, and the trolley is far away from the super-large span in the general engineering concept. The lining trolley suitable for the span of more than 20m is developed by dawn of the middle-iron department, the trolley adopts a double-door-frame bearing structure, the problem that the span of the traditional single-door-frame trolley is small is effectively solved, however, the trolley has no essential difference from the existing trolley in the structural aspect, the span application range of the trolley generally cannot exceed 30m, and the trolley cannot be suitable for the ultra-large-span tunnel with the span size of more than 30m and even reaches 60 m.
When the span exceeds 60 m's super large span tunnel construction, because the platform truck of non-adaptation uses, generally use scaffold frame or on-the-spot template of building etc. and carry out the construction, however, scaffold frame equipment when using scaffold frame or building the template frame is built with the template and is needed to consume a large amount of engineering time, and then can influence the construction progress.
Disclosure of Invention
The invention aims to provide a rapid construction assembly type trolley suitable for a super-large-span flat cavern, which is suitable for one-time ring forming construction of a concrete lining of the super-large-span flat cavern with the span of more than 60 m.
The invention adopts the following technical scheme: a rapid construction assembly type trolley suitable for an ultra-large-span flat cavern comprises a concrete lining construction assembly and a reinforcement construction assembly which are arranged in parallel to a tunnel face, wherein the reinforcement construction assembly is arranged close to the tunnel face, and the concrete lining construction assembly is arranged far away from the tunnel face; the concrete lining construction assembly is used for building a template of the concrete lining and pouring construction, and the steel bar binding construction assembly is used for steel bar binding construction of the concrete lining;
the concrete lining construction assembly and the steel bar binding construction assembly are both arranged on the walking portal frame assembly; the walking portal frame assembly is used for driving the concrete lining construction assembly and the steel bar binding construction assembly to move along the axis direction of the tunnel so as to enable constructors to carry out construction operation;
the top of the concrete lining construction assembly is provided with a plurality of top template modules, and two sides of the concrete lining construction assembly are provided with a plurality of side template modules; the plurality of top template modules and the plurality of side template modules are used for being matched with the tunnel excavation surface to form a concrete lining pouring space;
and each top template module and each side template module are provided with a heating device, and the heating devices are used for heating the poured concrete lining so as to accelerate the solidification speed of the concrete lining.
Further, the walking portal frame assembly comprises an end walking portal frame module and a middle walking portal frame module;
the end walking portal modules are arranged close to side walls on two sides of the tunnel, and the middle walking portal modules are arranged close to the axis of the tunnel.
Furthermore, a side template telescopic oil cylinder assembly is arranged between the end part walking portal frame module and the side template module;
the fixed end of the side template telescopic oil cylinder assembly is installed on the end walking portal frame module, and the moving end of the side template telescopic oil cylinder assembly is fixedly connected with the side template module.
Furthermore, the number of the middle walking portal frame modules on the cross section of the same tunnel is at least 2, and the middle walking portal frame modules are uniformly distributed on two sides of the axis of the tunnel.
Furthermore, the concrete lining construction assembly comprises a truss module group arranged on the end walking portal module and the middle walking portal module, a top template lifting module is arranged on the truss module group close to the tunnel arch top, a top template lifting mechanism transverse moving module is further arranged between the top template lifting module and the truss module group, and the top of the top template lifting module is fixedly connected with the top template modules.
Furthermore, the truss module group comprises two groups of side bottom layer truss groups which are arranged on two sides of the axis of the tunnel and are horizontally arranged, and each group of side bottom layer truss group at least comprises two side bottom layer trusses which are arranged in parallel front and back;
each side bottom truss is arranged on the end walking portal module and the middle walking portal module which are on the same side of the tunnel axis;
each side edge bottom layer truss is respectively provided with a side edge middle layer truss and a side edge top layer truss;
two side bottom layer trusses positioned on the cross section of the same tunnel are connected through a first middle layer truss, and a middle top layer truss is further arranged on the first middle layer truss.
Furthermore, the steel bar binding construction assembly comprises two groups of side bottom layer truss groups which are arranged on two sides of the axis of the tunnel and are horizontally arranged, and each group of side bottom layer truss group at least comprises two side bottom layer trusses which are arranged in parallel front and back;
each side bottom truss is arranged on the end walking portal module and the middle walking portal module which are on the same side of the tunnel axis;
a third-stage reinforcement construction module and a second-stage reinforcement construction module are sequentially arranged on each side bottom layer truss from the side wall of the tunnel to the axis direction of the tunnel;
two side bottom layer trusses positioned on the cross section of the same tunnel are connected through a second middle layer truss, and a first-stage steel bar binding construction module is arranged on the second middle layer truss
The invention has the beneficial effects that: according to the invention, the end part walking portal module and the middle part walking portal module can provide bottom support for the rapid construction assembly trolley of the ultra-large-span flat cavern, so that the construction requirement of the ultra-large-span flat cavern is met, and the walking portal component is respectively provided with the concrete lining construction component and the steel bar binding construction component, so that steel bar binding and concrete secondary lining pouring can be simultaneously carried out, and the construction progress is accelerated.
Drawings
Fig. 1 is a schematic front view of a rapid construction assembly type trolley suitable for a super-large span flat cavern according to an embodiment of the invention;
FIG. 2 is a side view of FIG. 1;
fig. 3 is a rear view of fig. 1.
Wherein: 1. the side template telescopic oil cylinder assembly; 2. an end walking portal frame module; 3. a top template lifting module; 4. side bottom layer trusses; 5. a top template lifting mechanism transversely moves the module; 6. side middle layer truss; 7. a transverse truss module; 8. side top layer trusses; 9. a first middle layer truss; 10. a middle top truss 11 is fixedly connected with the top template through a screw rod; 12. concrete lining; 13. a top template module; 14. a side template module; 15. low side walls; 16. a pedestrian ladder module; 17. a top lateral truss module; 18. a lower lateral truss module; 19. a middle walking portal frame module; 20. a first-stage steel bar binding construction module; 21. a second-level steel bar binding construction module; 22. a third-level steel bar binding construction module; 23. a heating device; 24. the second middle layer truss.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The embodiment of the invention discloses a rapid construction assembly type trolley suitable for a super-large-span flat grotto, which comprises a concrete lining construction component a and a steel bar binding construction component b, wherein the concrete lining construction component a and the steel bar binding construction component b are arranged in parallel to a tunnel face; the concrete lining construction assembly is used for template building and pouring construction of the concrete lining 12, and the reinforcement binding construction assembly is used for reinforcement binding construction of the concrete lining 12; the concrete lining construction assembly and the steel bar binding construction assembly are both arranged on the walking portal frame assembly; the walking portal frame assembly is used for driving the concrete lining construction assembly and the steel bar binding construction assembly to move along the axis direction of the tunnel so as to enable constructors to carry out construction operation; the top of the concrete lining construction assembly is provided with a plurality of top template modules 13, and two sides of the concrete lining construction assembly are provided with a plurality of side template modules 14; the plurality of top formwork modules 13 and the plurality of side formwork modules 14 are used for being matched with a tunnel excavation surface to form a pouring space of the concrete lining 12; each of the top formwork modules 13 and the side formwork modules 14 is provided with a heating device 23, and the heating devices 23 are used for heating the poured concrete lining 12 so as to accelerate the solidification speed of the concrete lining 12.
According to the invention, the end part walking portal module and the middle part walking portal module can provide bottom support for the rapid construction assembly trolley of the ultra-large-span flat cavern, so that the construction requirement of the ultra-large-span flat cavern is met, and the walking portal component is respectively provided with the concrete lining construction component and the steel bar binding construction component, so that steel bar binding and concrete secondary lining pouring can be simultaneously carried out, and the construction progress is accelerated.
Specifically, the heating device 23 includes circulation pipes disposed on the inner surfaces of the panels of each of the top formwork modules 13 and the side formwork modules 14, and a heating material, such as hot water, is filled into each of the circulation pipes, and a heating pipe or a heating wire is disposed in each of the circulation pipes and connected to the unified intelligent temperature control heating system through a wire, and the intelligent temperature control heating system is started to control the heating pipe or the heating wire to release heat according to the actual needs of the project, so as to heat the heating material in the circulation pipes, transfer heat to the corresponding formwork through the heating material, and heat the concrete lining 12 through the formwork, thereby promoting the solidification of the concrete lining 12.
In another implementation method of the heating device 23, a plurality of pipelines may be arranged along the central axis of the tunnel, each pipeline is respectively installed on the templates of the top template module 13 and the side template module 14, and an inlet and an outlet of each pipeline are connected to an external temperature control heating system. For example, a small hot water boiler is installed outside, and a pipe pump are provided, and the hot water is pumped into a plurality of pipes on the die plate, and flows back from the outlet to form a circulation pipe, thereby serving as a heating device in the present embodiment.
In this embodiment, the top formwork module 13 and the side formwork module 14 can form a formwork support molding of the ultra-large-span flat cavern, so as to facilitate subsequent concrete pouring. And, be provided with heating device 23 on top form module 13 and side form module 14, for secondary lining heating maintenance before the template is dismantled, make its rapid prototyping, further increase the construction progress. The heating devices 23 are uniformly distributed and attached to the side surfaces of the top template module 13 and the side template module 14 close to the top template lifting module 3.
The lower end of the side template module 14 is lapped on one side of the short side wall 15 close to the trolley, and the side template module 14 is fixedly connected with one end (namely a moving end) of the side template telescopic oil cylinder assembly 1; the other end (namely the fixed end) of the side template telescopic oil cylinder component 1 is fixedly connected with the end walking portal frame module 2.
As a specific implementation manner, the heating device 23 may be a heating guide wire attached to each template, and after each template is set, the heating guide wires of all the templates are connected together and connected to a power supply, and the heating guide wires generate heat after being powered on, so as to dry the lining concrete, reduce the concrete solidification time, and further increase the construction progress.
In particular, the running mast assembly in this embodiment comprises an end running mast module 2 and a middle running mast module 19. The end walking portal module 2 is arranged close to the side walls of the two sides of the tunnel, and the middle walking portal module 19 is arranged close to the axis of the tunnel. Because the span in the ultra-large-span flat cavern is larger, the combined mode of the end part walking portal module 2 and the middle part walking portal module 19 is used for providing support for the whole trolley. When the span is insufficient, the number of the middle walking portal modules 19 on the cross section of the same tunnel can be properly increased, the pressure on each middle walking portal module 19 is shared, and then the construction of the ultra-large span flat cavern is realized.
And a side template telescopic oil cylinder assembly 1 is arranged on one side of each end walking portal frame module 2 close to the side wall of the tunnel, and a side template module 14 is arranged at the outer end of the side template telescopic oil cylinder assembly 1. The side template module 14 is fixed through the side template telescopic oil cylinder assembly 1.
In order to reduce the pressure born by each middle running portal module 19, the number of the middle running portal modules 19 on the same tunnel cross section is at least 2, and the middle running portal modules are uniformly distributed on two sides of the tunnel axis. Each of the middle running gantry modules 19 and the end running gantry modules 2 together bear the weight of the entire concrete lining construction assembly and the reinforcement bar binding construction assembly. Moving mechanisms (such as rail wheels) are arranged at the bottoms of each middle walking portal module 19 and each end walking portal module 2 and are matched with rails which are laid in the tunnel in advance to drive the trolley to move forwards or backwards.
The concrete lining construction assembly comprises a truss module group arranged on an end walking portal module 2 and a middle walking portal module 19, a top template lifting module 3 is arranged on the truss module group close to the tunnel arch top, a top template lifting mechanism transverse moving module 5 is further arranged between the top template lifting module 3 and the truss module group, and a top template module 13 is arranged on the top template lifting module 3. The lifting and translation of the top formwork can be realized by using the top formwork lifting module 3 and the top formwork lifting mechanism transverse moving module 5, and then the fine adjustment of the formwork before concrete pouring is realized.
In order to facilitate transportation and assembly, the top template module 13 is processed and manufactured in a segmented mode, all segmented top templates are fixedly connected into a whole through the top template fixedly-connecting screw rod 11 during assembly, and the lower portion of the top template module 13 is fixedly connected with the top template lifting modules 3.
Truss module group can have the composition mode of multiple difference, provides only a better implementation in this application embodiment, and is concrete, truss module group is including setting up two sets of side bottom truss groups that just level set up in tunnel axis both sides, and every side bottom truss group of group includes parallel arrangement's side bottom truss 4 around two at least. And each group of side bottom truss groups are all parallel to the tunnel face, so that the truss module groups are the truss module groups on two sides of the tunnel axis, the pressure of the walking portal module groups is reduced, and the walking portal module groups on two sides equally divide the overall pressure of the truss module groups to meet the requirement of the ultra-large-span flat cavern.
Each side bottom truss 4 is arranged on the end walking portal module 2 and the middle walking portal module 19 which are on the same side of the tunnel axis. So that the end running mast modules 2 and the middle running mast modules 19 have sufficient strength to support the weight of the side bottom trusses 4.
In this embodiment, each side bottom truss 4 is provided with a side middle truss 6 and a side top truss 8, so that a constructor can construct a vault formwork on the side middle truss 6 and the side top truss 8.
Two side bottom trusses 4 on the same tunnel cross section are connected through a first middle truss 9, and a middle top truss 10 is further arranged on the first middle truss 9. Like this, distribute the weight of first middle part middle level truss 9 and middle part top layer truss 10 again, and then make whole truss module group move smoothly to, because the tunnel middle part below does not need the truss, reduce the truss setting at this position, effectively reduce the weight of whole truss module group.
Still be provided with a plurality of people shape ladder module 16 on middle part top layer truss 10, pedestrian's ladder module 16 also can set up on other truss modules according to actual need, mainly is used for alleviateing platform truck weight, makes things convenient for constructor to operate.
In addition, in order to increase the stability of the truss module group, a plurality of parallel transverse truss modules 7 are also erected between the side middle layer truss 6 and the side top layer truss 8, and the plurality of transverse truss modules 7 are all arranged in parallel to the axis of the tunnel and are perpendicular to the side middle layer truss 6. A lower side truss module 18 is also mounted on the middle running mast module 19. The first middle truss 9 and the middle top truss 10 are also provided with top side truss modules 17.
The steel bar binding construction assembly comprises two groups of side bottom layer truss groups which are arranged on two sides of the axis of the tunnel and are horizontally arranged, and each group of side bottom layer truss group at least comprises two side bottom layer trusses 4 which are arranged in parallel front and back; each side bottom layer truss 4 is arranged on the end walking portal module 2 and the middle walking portal module 19 which are on the same side of the tunnel axis; a third-stage reinforcement construction module 22 and a second-stage reinforcement construction module 21 are sequentially arranged on each side bottom truss 4 from the side wall of the tunnel to the axis direction of the tunnel; two side bottom trusses 4 on the same tunnel cross section are also connected through a second middle truss 24, and a first-stage steel bar binding construction module 20 is arranged on the second middle truss 24.
Through foretell reinforcement construction subassembly, can realize tunnel secondary lining's reinforcement preparation work in earlier stage, one-level reinforcement construction module 20, second grade reinforcement construction module 21 and tertiary reinforcement construction module 22 are for being located the reinforcement module of co-altitude not, wherein, one-level reinforcement construction module 20 is located the tunnel top, a reinforcement construction for the tunnel top, second grade reinforcement construction module is located the middle part of tunnel vault, a reinforcement construction for tunnel vault middle part, tertiary reinforcement construction module is located the bottom of tunnel vault, a reinforcement construction for tunnel vault bottom.
The top template module 13 and the side template module 14 are both composed of a plurality of existing templates and are built according to actual needs. The end part walking portal frame module 2 and the middle part walking portal frame module 19 are composed of portal frames and a walking system. The side template telescopic oil cylinder assembly 1, the top template lifting module 3 and the top template lifting mechanism transverse moving module 5 are all composed of oil cylinders, oil cylinder supports and accessories. The truss structures such as the side bottom truss 4, the side middle truss 6, the side top truss 8, the first middle truss 9, the middle top truss 10 and the like are all common stress structures in structural mechanics. The first-stage reinforcement construction module 20, the second-stage reinforcement construction module 21 and the third-stage reinforcement construction module 22 are all composed of an operation platform, hoisting equipment and power equipment, and are conventional means in the field.
The working process of the trolley comprises the following steps:
after the whole trolley is assembled on a construction site, the trolley travels towards the tunnel face direction along a pre-paved track in a tunnel under the driving of the end walking portal module 2 and the middle walking module 19, wherein a steel bar binding component b is close to one end of the tunnel face, and a concrete lining pouring component a is close to one end of a tunnel opening; after the trolley is stably stopped at a preset position, a worker starts steel bar binding operation on the first-level steel bar binding construction module 20, the second-level steel bar binding construction module 21 and the third-level steel bar binding construction module 22, meanwhile, the top template lifting module 3 lifts the whole top template module 13 upwards to a concrete lining design position, and then the side template module 14 extends outwards to a position close to the short side wall 15 under the thrust action of the side template telescopic oil cylinder assembly 1.
After the reinforcement binding of one working cycle is finished, the trolley continues to advance for a working cycle distance towards the tunnel face direction, after the trolley is stopped stably in place, the side template module 14 and the top template module 13 are stretched to a position which is precisely matched with the designed section of the concrete lining 12 through the fine adjustment functions of the top template lifting module 3, the top template lifting mechanism transverse moving module 5 and the side template telescopic oil cylinder assembly 1, the trolley concrete pouring assembly a finishes the precise positioning work, and begins to perform concrete pouring on the cavern part which is finished with the reinforcement binding; on the other hand, the trolley reinforcement construction assembly b continues to perform the next circulation reinforcement operation.
After the concrete lining 12 of a circulation is poured, the trolley concrete lining pouring part uses a heating device 23 of the trolley to carry out timely constant temperature curing on the poured concrete before demoulding, and demoulding operation is started after curing is finished.
After a circulating reinforcing steel bar binding operation is finished, the trolley moves a circulating operation distance towards the tunnel face direction, so that the trolley concrete pouring component a is just arranged under the finished reinforcing steel bar binding part, then the trolley is positioned, concrete begins to be poured at the position where the reinforcing steel bar is bound, and constant-temperature maintenance work of concrete lining is immediately carried out after the concrete is poured. The steel bar binding, the concrete pouring and the maintenance are complete working cycle, and the synchronous cycle operation is repeated in this way until the concrete lining operation of the whole super-large-span cavern is completed.
The size of the cross section of the trolley provided by the embodiment of the invention can meet the requirement of a cavern with the span of more than 60m, and the trolley is originated in the field; the structure is novel, and the modular design is adopted, so that the rapid assembly in the hole can be realized; the multilayer integral truss structure is completely different from a conventional single-layer portal frame supporting structure; the trolley has the functions of steel bar binding and constant-temperature maintenance of the concrete lining, and realizes three-in-one operation of steel bar binding, concrete lining pouring and maintenance. Through the synchronous coordination operation of the template lifting mechanism and the transverse moving device, the technical problem that the matching precision of the arc-shaped surface of the template manually built conventionally and the designed size surface of the concrete lining of the cavern is low under the condition of large span is effectively solved.
The invention breaks the embarrassing situation that a trolley can be used in the field of concrete lining construction of the ultra-large span cavern, provides equipment guarantee for the construction of the ultra-large span cavern, effectively reduces the construction difficulty of the engineering and promotes the technical development of the new engineering field.
The invention realizes continuous uninterrupted operation of three construction procedures of steel bar binding, concrete lining pouring and constant temperature maintenance, effectively solves the problem of large difficulty in binding the steel bars of the ultra-large span cavern, improves the quality and efficiency of concrete lining construction, greatly shortens the construction time, and provides technical guarantee for the on-schedule delivery of key projects with extremely strict construction period requirements.
Compared with the maintenance of the demolded concrete lining by using an independent maintenance trolley, the self-contained electric heating intelligent temperature control system (namely a heating device) can synchronously perform maintenance work within the initial setting time after the concrete is poured and before the demolded concrete, the maintenance is more timely, the effect is better, the demolded concrete is always in a closed space, the water loss is less, no additional moisturizing operation is required, and the economic benefit is remarkable.
Claims (7)
1. A rapid construction assembly type trolley suitable for an ultra-large span flat cavern is characterized by comprising a concrete lining construction assembly and a reinforcement construction assembly which are arranged in parallel to a tunnel face, wherein the reinforcement construction assembly is arranged close to the tunnel face, and the concrete lining construction assembly is arranged far away from the tunnel face; the concrete lining construction assembly is used for template building and pouring construction of a concrete lining (12), and the steel bar binding construction assembly is used for steel bar binding construction of the concrete lining (12);
the concrete lining construction assembly and the steel bar binding construction assembly are both arranged on a walking portal frame assembly, and the walking portal frame assembly is used for driving the concrete lining construction assembly and the steel bar binding construction assembly to move along the axis direction of the tunnel so as to enable construction personnel to carry out construction operation;
the top of the concrete lining construction assembly is provided with a plurality of top template modules (13), and two sides of the concrete lining construction assembly are provided with a plurality of side template modules (14); the plurality of top formwork modules (13) and the plurality of side formwork modules (14) are used for being matched with a tunnel excavation surface to form a pouring space of the concrete lining (12);
each top formwork module (13) and each side formwork module (14) are provided with a heating device (23), and the heating devices (23) are used for heating the poured concrete lining (12) so as to accelerate the solidification speed of the concrete lining (12).
2. The rapid construction assembly trolley suitable for the ultra-large span flat cavern as recited in claim 1, wherein the traveling gantry assembly comprises an end traveling gantry module (2) and a middle traveling gantry module (19);
the end walking portal module (2) is arranged close to side walls on two sides of the tunnel, and the middle walking portal module (19) is arranged close to the axis of the tunnel.
3. The rapid construction assembly type trolley suitable for the ultra-large span flat cavern as claimed in claim 2, wherein a side formwork telescopic oil cylinder assembly (1) is arranged between the end portion walking portal frame module (2) and the side formwork module (14);
the fixed end of the side formwork telescopic oil cylinder assembly (1) is installed on the end walking gantry module (2), and the moving end of the side formwork telescopic oil cylinder assembly (1) is fixedly connected with the side formwork module (14).
4. The rapid construction assembly type trolley suitable for the ultra-large span flat cavern as claimed in claim 2, wherein the number of the middle running portal modules (19) on the same tunnel cross section is at least 2, and the middle running portal modules are uniformly distributed on two sides of the tunnel axis.
5. The rapid construction assembly trolley applicable to the ultra-large span flat cavern as claimed in claim 1, wherein the concrete lining construction assembly comprises a truss module group installed on the end portion walking portal module (2) and the middle portion walking portal module (19), a top template lifting module (3) is arranged on the truss module group near the tunnel arch crown, a top template lifting mechanism transverse moving module (5) is further arranged between the top template lifting module (3) and the truss module group, and the top of the top template lifting module (3) is fixedly connected with a plurality of top template modules (13).
6. The rapid construction assembly type trolley suitable for the ultra-large span flat cavern as claimed in claim 5, wherein the truss module group comprises two groups of side bottom truss groups which are horizontally arranged at two sides of the tunnel axis, and each group of the side bottom truss group at least comprises two side bottom trusses (4) which are arranged in parallel in the front and back direction;
each side bottom layer truss (4) is arranged on an end walking portal module (2) and a middle walking portal module (19) which are arranged on the same side of the tunnel axis;
each side bottom truss (4) is respectively provided with a side middle truss (6) and a side top truss (8);
two side bottom layer trusses (4) on the same tunnel cross section are connected through a first middle layer truss (9), and a middle top layer truss (10) is further arranged on the first middle layer truss (9).
7. The rapid construction assembly type trolley suitable for the ultra-large span flat cavern as recited in claim 2, wherein the reinforcement construction assembly comprises two sets of side bottom truss groups which are horizontally arranged at both sides of the tunnel axis, each set of the side bottom truss group at least comprises two side bottom trusses (4) which are arranged in parallel in the front and back direction;
each side bottom layer truss (4) is arranged on an end walking portal module (2) and a middle walking portal module (19) which are arranged on the same side of the tunnel axis;
a third-stage reinforcement construction module (22) and a second-stage reinforcement construction module (21) are sequentially arranged on each side bottom truss (4) from the side wall of the tunnel to the axis direction of the tunnel;
two side bottom trusses (4) on the same tunnel cross section are connected through a second middle truss (24), and a first-stage steel bar binding construction module (20) is arranged on the second middle truss (24).
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| CN202010348163.4A CN112431612A (en) | 2020-04-28 | 2020-04-28 | Quick construction pin-connected panel platform truck suitable for flat hole of super large span room |
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