CN113700499A - Vault prefabricated part and two lining tunnel trolleys - Google Patents
Vault prefabricated part and two lining tunnel trolleys Download PDFInfo
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- CN113700499A CN113700499A CN202111260975.4A CN202111260975A CN113700499A CN 113700499 A CN113700499 A CN 113700499A CN 202111260975 A CN202111260975 A CN 202111260975A CN 113700499 A CN113700499 A CN 113700499A
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- prefabricated
- arm
- vault
- tunnel
- tenon
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/08—Lining with building materials with preformed concrete slabs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/006—Lining anchored in the rock
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/08—Lining with building materials with preformed concrete slabs
- E21D11/083—Methods or devices for joining adjacent concrete segments
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The invention discloses a vault prefabricated part and a two-lining tunnel trolley, wherein the two-lining tunnel trolley is used for installing the vault prefabricated part, the vault prefabricated part is formed by splicing a plurality of prefabricated modules, the prefabricated modules are prefabricated in advance by constructors according to the size of a tunnel and are subjected to strength check, then the prefabricated modules are transported to a tunnel section to be constructed for splicing, and guiding and connecting are carried out through a mortise and tenon structure during splicing. The two side surfaces of the prefabricated module are mutually attached through the wedge surfaces, so that the stability of the vault prefabricated part structure is further improved. By adopting the design of the structure, the load in the vertical direction can be decomposed towards two sides along the prefabricated vault component when the prefabricated vault component sinks at the top of the tunnel; and the design of the wedge surface is adopted, and the arch crown prefabricated part is folded towards the inner side of the tunnel when bearing pressure, so that the adjacent prefabricated modules are attached more tightly.
Description
Technical Field
The invention relates to tunnel construction equipment, in particular to a vault prefabricated part and a two-lining tunnel trolley.
Background
The tunnel concrete layer is usually excavated and lined. And after the tunnel is excavated, concrete is sprayed to serve as primary support. And then, erecting the reinforcing mesh, fixing the reinforcing mesh by using the anchor rods, and then pouring the reinforcing mesh.
When the reinforcing mesh is poured, a formwork trolley and a pouring trolley are generally adopted for construction. The method comprises the following steps of welding a reinforcing mesh of a tunnel vault and erecting a template through a template trolley before pouring, wherein a pouring bin opening is formed in the template, and pouring is carried out through the pouring trolley after the template is erected. The existing two-lining construction process basically finishes the work of welding a reinforcing mesh and the like on a trolley by field constructors, has low working efficiency and high labor intensity, and has potential safety hazard during working.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, compared with a structure that a reinforcing mesh is erected and then concrete is poured during vault lining in traditional tunnel construction, the vault prefabricated component provided by the invention not only can improve the construction efficiency, but also is more stable and reliable in structure.
In a second aspect, the invention provides a two-lining tunnel trolley which can be used for splicing the vault prefabricated parts in the first aspect, so that the labor cost is saved, and the construction efficiency is improved.
According to the embodiment of the first aspect of the invention, the vault prefabricated component comprises a plurality of prefabricated modules, wedge surfaces and tenon-and-mortise structures are arranged on the left side and the right side of each prefabricated module, the two prefabricated modules which are adjacent to each other on the left side and the right side can be spliced through the tenon-and-mortise structures, and the wedge surfaces of the two prefabricated modules which are adjacent to each other on the left side and the right side are mutually attached during splicing.
According to the embodiment of the invention, at least the following technical effects are achieved:
the vault prefabricated component is formed by splicing a plurality of prefabricated modules, the prefabricated modules are prefabricated according to the size of a tunnel by constructors in advance and are subjected to strength checking, then the prefabricated modules are transported to a tunnel section to be constructed for splicing, and guiding and connection are carried out through a mortise and tenon structure during splicing. The two side surfaces of the prefabricated module are mutually attached through the wedge surfaces, so that the stability of the vault prefabricated part structure is further improved. By adopting the design of the structure, the load in the vertical direction can be decomposed towards two sides along the prefabricated vault component when the prefabricated vault component sinks at the top of the tunnel; and the design of the wedge surface is adopted, and the arch crown prefabricated part is folded towards the inner side of the tunnel when bearing pressure, so that the adjacent prefabricated modules are attached more tightly. Reasonable in design has improved the structural strength at tunnel top, compares in traditional welding reinforcing bar net, sets up the module and then carries out the mode of slip casting again, has reduced site operation personnel's the work load and the work degree of difficulty, has improved work efficiency to adopt the modular design to produce in batches, further reduced construction cost.
According to some embodiments of the invention, the precast modules comprise a steel reinforcement framework and a concrete matrix, the steel reinforcement framework is embedded in the concrete matrix, the concrete matrix is arranged into an arch structure corresponding to the arch camber of the tunnel, and the wedge surfaces are arranged on the left side and the right side of the arch structure.
According to the embodiment of the invention, at least the following technical effects are achieved:
when the prefabricated module is manufactured, the steel reinforcement framework is welded, then the steel reinforcement framework is placed in the die cavity, and further concrete is poured to manufacture the prefabricated module. The shape of the mold cavity is generally consistent with the arch camber setting of the tunnel to achieve a uniform force structure.
According to some embodiments of the invention, the front end of each prefabricated module is provided with an arc-shaped groove, the rear end of each prefabricated module is provided with an arc-shaped convex part, and two prefabricated modules adjacent to each other in front and back are kept fit through the arc-shaped grooves and the arc-shaped convex parts.
According to the embodiment of the invention, at least the following technical effects are achieved:
the front end and the rear end of each prefabricated module are respectively provided with an arc-shaped groove or an arc-shaped convex part which is consistent with the radian of the arch crown of the tunnel, the arc-shaped convex parts and the arc-shaped grooves of the two adjacent rows of prefabricated arch crown components can be wedged together, and the arc-shaped convex parts can slide in the arc-shaped grooves. By adopting the design of the structure, the connection between the arch crown prefabricated parts is tight, and the bearing capacity of the whole structure can be further improved by adopting a staggered installation mode during installation.
According to some embodiments of the invention, the mortise and tenon structure is provided with a tenon on the left side of the steel bar framework and a mortise on the right side, the tenon protrudes outward relative to the wedge surface, the lower end of the tenon is provided with a first positioning hole, the upper end of the tenon is provided with a first arc-shaped adjusting hole, the steel bar framework is provided with a first pin structure penetrating through the first positioning hole and the first arc-shaped adjusting hole, the tenon can rotate around the first positioning hole to adjust the inclination angle of the tenon, the lower end of the mortise is provided with a second positioning hole, the upper end of the mortise is provided with a second arc-shaped adjusting hole, the steel bar framework is provided with a second pin structure penetrating through the second positioning hole and the second arc-shaped adjusting hole, and the mortise can rotate around the second positioning hole to adjust the inclination angle of the mortise.
According to the embodiment of the invention, at least the following technical effects are achieved:
adopt above-mentioned structural design's this embodiment, tenon and fourth of the twelve earthly branches part set up respectively in framework of steel reinforcement's both sides, put into the die cavity with framework of steel reinforcement after, according to the construction demand in tunnel, adjustment tenon and fourth of the twelve earthly branches part inclination adopt welded mode to fix on framework of steel reinforcement again with tenon and fourth of the twelve earthly branches part. The design through above-mentioned structure can make prefabricated module's matching better, has improved the range of application of this embodiment.
According to some embodiments of the invention, the mortise and tenon structure further comprises an anti-drop rod, the mortise and tenon structure is provided with a first wedge hole on the tenon and a second wedge hole on the mortise, and the first wedge hole and the second wedge hole are matched with the outer contour of the anti-drop rod when being spliced together.
According to the embodiment of the invention, at least the following technical effects are achieved:
after splicing the prefabricated modules, the anti-falling rod is inserted, so that the stability of the module mounting structure can be further prefabricated, and a good anti-falling effect is achieved.
According to some embodiments of the invention, the prefabricated module further comprises a top bracing mechanism, wherein top bracing screws are arranged upwards at four corners of the steel reinforcement framework by the top bracing mechanism, a plurality of outwards-opened support legs are arranged at the upper ends of the top bracing screws, and the support legs are used for abutting against the surface of the tunnel.
According to the embodiment of the invention, at least the following technical effects are achieved:
in this embodiment, through being provided with the shore screw rod in four edges of framework of steel reinforcement, the height of shore screw rod can be adjusted, not only can make the shape adaptation of vault prefabricated component and tunnel vault, but also can reserve the slip casting space. And after concrete slurry injected between the vault prefabricated component and the tunnel vault is solidified, the jacking screw is used as a reinforcing rib to improve the structural strength of the vault prefabricated component and the whole tunnel vault.
According to some embodiments of the invention, the prefabricated module is provided with a reserved anchor rod hole, and the vault prefabricated component is provided with an anchor rod corresponding to the reserved anchor rod hole.
According to the embodiment of the invention, at least the following technical effects are achieved:
when the prefabricated module is installed, the anchor rod is drilled into the tunnel rock layer from the anchor rod hole, the function of pre-fixing the vault prefabricated component can be achieved, and grouting filling is performed at the bottom of the anchor rod after the vault prefabricated component and the anchor rod are installed. The vault prefabricated part which is filled by grouting is tightly combined with the vault of the tunnel, and the strength is high.
According to some embodiments of the invention, the precast modules have jig grooves formed thereon.
According to the embodiment of the invention, at least the following technical effects are achieved:
through setting up the anchor clamps groove, can use other mechanical equipment to install prefabricated module, not only improved the efficiency of construction, practiced thrift the human cost. And when slip casting was filled, the anchor clamps groove can regard as the exhaust hole, and the existence negative pressure of avoiding vault prefabricated component and tunnel vault leads to the slip casting to fill inadequately.
According to the second aspect of the invention, the two-lining tunnel trolley is used for clamping the vault precast element, and specifically comprises a frame, a plane motion mechanism and a module mounting mechanism, wherein the module mounting mechanism is mounted on the frame through the plane motion mechanism and can be moved and adjusted under the action of the plane motion mechanism, a clamp groove is formed in the precast module, and the module mounting mechanism is provided with a clamping structure matched with the clamp groove and used for clamping the precast module through the clamp groove.
According to the embodiment of the invention, at least the following technical effects are achieved:
through the two lining tunnel loop wheel machine in this example, can install prefabricated module, only improved the efficiency of construction, practiced thrift the human cost. The two-lining tunnel trolley comprises a frame, a plane movement mechanism and a module mounting mechanism, wherein the plane movement mechanism is mounted on the frame, the module mounting mechanism is mounted on the plane movement mechanism, and through the design of the structure, the module mounting mechanism can move in an X-Y plane, so that a plurality of rows of prefabricated modules can be mounted conveniently.
According to some embodiments of the invention, the module mounting mechanism comprises a base, a rotary mounting base, a first rotary arm, a second rotary arm, a jaw assembly, a first hydraulic cylinder, a second hydraulic cylinder and a third hydraulic cylinder, the rotary mounting base is rotatably mounted on the base around a vertical axis, a lower end of the first rotary arm is rotatably mounted on the rotary mounting base around a horizontal axis, the second rotary arm is rotatably mounted on an upper end of the first rotary arm around a horizontal axis, the jaw assembly is mounted on the second rotary arm at an end far from a rotation center of the second rotary arm, the first hydraulic cylinder is arranged between the rotary mounting base and the first rotary arm for controlling the rotation of the first rotary arm, the second hydraulic cylinder is arranged between the first rotary arm and the second rotary arm, the third hydraulic cylinder is installed on the second rotating arm and connected with the clamping jaw assembly to control the clamping jaw assembly to clamp or unclamp.
According to the embodiment of the invention, at least the following technical effects are achieved:
by adopting the structural design, the multi-degree-of-freedom design structure is adopted, and the clamping jaw assembly of the module mounting mechanism can move on a horizontal plane and a vertical plane, so that the prefabricated module can be clamped and mounted conveniently; the hydraulic cylinder is used as driving power, so that the supporting capacity is high, and stable clamping force can be provided.
According to some embodiments of the present invention, the clamping jaw assembly includes a mounting bracket, a first clamping arm and a second clamping arm, a lower end of the mounting bracket is fixedly mounted on the second rotating arm and is located at one end far away from a rotation center of the second rotating arm, a middle position of the first clamping arm is rotatably mounted at one end of the mounting bracket, a middle position of the second clamping arm is rotatably mounted at the other end of the mounting bracket, one end of the first clamping arm and one end of the second clamping arm are vertically installed in a staggered manner and are simultaneously mounted on an end portion of a piston rod of the third hydraulic cylinder, so as to realize opening and closing of the other end of the first clamping arm and the other end of the second clamping arm when the third hydraulic cylinder is telescopic.
According to the embodiment of the invention, at least the following technical effects are achieved:
the clamping jaw assembly is designed by adopting a scissor-fork type structure, and the module mounting mechanism can stably clamp and mount the prefabricated module through the clamp hole on the prefabricated module.
According to some embodiments of the invention, the planar motion mechanism comprises a first rail mounted on the frame and a second rail slidably mounted on the first rail with a length direction of the second rail perpendicular to a length direction of the first rail, the base slidably mounted on the second rail.
According to the embodiment of the invention, at least the following technical effects are achieved:
through the design of the structure, the module mounting mechanism can move on the X-Y plane and move rapidly, and the construction efficiency is improved.
According to some embodiments of the invention, the carriage is provided with a plurality of sets of rail wheels at the bottom and the rail wheels are slidably mounted on a rail system at the bottom of the tunnel.
By adopting the structural design, the two-lining tunnel trolley can carry out sectional construction.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of one construction of a precast module of the present invention;
fig. 3 is a schematic structural view of the rebar skeleton and associated components of the present invention;
FIG. 4 is a schematic structural diagram of a mortise and tenon structure according to the present invention;
FIG. 5 is a schematic view of the construction of the jacking screw of the present invention;
FIG. 6 is a schematic view of one configuration of the two-liner trolley of the present invention;
FIG. 7 is a schematic structural view of the planar motion mechanism and module mounting mechanism of the present invention;
FIG. 8 is a schematic structural view of the module mounting mechanism of the present invention;
FIG. 9 is a schematic structural view of the jaw assembly of the present invention;
in the figure, 100-prefabricated module, 110-steel reinforcement framework, 120-concrete matrix, 121-wedge surface, 122-arc groove, 123-arc convex part, 124-anchor rod hole, 125-clamp groove, 130-mortise and tenon structure, 131-tenon, 132-mortise part, 133-first positioning hole, 134-first arc adjusting hole, 135-second positioning hole, 136-second arc adjusting hole, 137-first wedge hole, 138-second wedge hole, 140-top bracing screw rod, 141-supporting leg, 200-frame, 300-plane motion mechanism, 310-first guide rail, 320-second guide rail, 400-module mounting mechanism, 401-base, 402-rotary mounting seat, 403-first rotary arm, 404-second rotary arm, 405-a first hydraulic cylinder, 406-a second hydraulic cylinder, 407-a third hydraulic cylinder, 410-a clamping jaw assembly, 411-a mounting frame, 412-a first clamping arm, 413-a second clamping arm.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 9, the invention provides an arch crown prefabricated part, which comprises a plurality of prefabricated modules 100, wherein wedge surfaces 121 and tenon-and-mortise structures 130 are arranged on the left side and the right side of each prefabricated module 100, two prefabricated modules 100 adjacent to each other on the left side and the right side can be spliced through the tenon-and-mortise structures 130, and the wedge surfaces 121 of the two prefabricated modules 100 adjacent to each other on the left side and the right side are mutually attached during splicing.
Referring to fig. 1 to 4, vault prefabricated component comprises a plurality of prefabricated modules 100 concatenation, and prefabricated module 100 is prefabricated well and is accomplished the intensity check according to the size in tunnel in advance by constructor earlier, then transports the tunnel section of treating the construction and splices, and prefabricated module 100 leads through mortise and tenon structure 130 before the concatenation, carries out the anticreep through mortise and tenon structure 130 after the concatenation. The prefabricated modules 100 are installed from the edge of the bottom of one side of the tunnel vault, the installation is finished at the edge of the other side of the tunnel vault, two side surfaces of the prefabricated modules 100 are mutually attached through wedge surfaces 121, and the load in the vertical direction can be decomposed to two sides along the prefabricated members of the vault when the prefabricated members of the vault sink at the top of the tunnel; and moreover, due to the design of the wedge surfaces 121, the arch crown prefabricated parts are folded towards the inner side of the tunnel when bearing pressure, so that the adjacent prefabricated modules 100 are attached more tightly.
In some embodiments of the present invention, the prefabricated module 100 includes a reinforcement cage 110 and a concrete base 120, the reinforcement cage 110 is pre-embedded in the concrete base 120, the concrete base 120 is configured to be an arch structure corresponding to the arch camber of the tunnel, and the wedge surfaces 121 are disposed on the left and right sides of the arch structure.
Referring to fig. 2 and 3, the prefabricated module 100 includes a reinforcement cage 110 and a concrete base 120, and when the prefabricated module 100 is manufactured, the reinforcement cage 110 is welded, and then the reinforcement cage 110 is placed in a mold cavity, wherein the shape of the mold cavity is generally consistent with the arc of the arch of the tunnel. Further, concrete is poured to form the prefabricated module 100 of an arch structure to achieve a uniform stress structure.
In some embodiments of the present invention, the front end of the prefabricated module 100 is provided with the arc-shaped groove 122, the rear end of the prefabricated module 100 is provided with the arc-shaped protrusion 123, and two prefabricated modules 100 adjacent to each other in the front and rear direction are kept fit together through the arc-shaped groove 122 and the arc-shaped protrusion 123.
Referring to fig. 2, the front and rear ends of the precast module 100 are respectively provided with an arc groove 122 or an arc protrusion 123 corresponding to the arc of the tunnel vault, the arc protrusion 123 and the arc groove 122 of two adjacent rows of vault precast elements can be wedged together, and the arc protrusion 123 can slide in the arc groove 122. By adopting the design of the structure, the connection between the arch crown prefabricated parts is tight, and the bearing capacity of the whole structure can be further improved by adopting a staggered installation mode during installation.
In some embodiments of the present invention, the mortise and tenon structure 130 is provided with a tenon 131 at the left side of the steel bar framework 110, a mortise 132 at the right side of the steel bar framework 110, the tenon 131 protrudes outward relative to the wedge surface 121, a first positioning hole 133 is provided at the lower end of the tenon 131, a first arc-shaped adjusting hole 134 is provided at the upper end of the tenon 131, the steel bar framework 110 is provided with a first pin structure passing through the first positioning hole 133 and the first arc-shaped adjusting hole 134, the tenon 131 can rotate around the first positioning hole 133 to adjust the tilt angle of the tenon 131, a second positioning hole 135 is provided at the lower end of the mortise 132, a second arc-shaped adjusting hole 136 is provided at the upper end of the mortise 132, the steel bar framework 110 is provided with a second pin structure passing through the second positioning hole 135 and the second arc-shaped adjusting hole 136, and the mortise 132 can rotate around the second positioning hole 135 to adjust the tilt angle of the mortise 132.
Referring to fig. 3 and 4, the tenon 131 and the mortise 132 are respectively disposed at both sides of the steel-bar framework 110. The steel skeleton 110 is provided with two layers of steel mesh reinforcement. When the prefabricated module 100 of preparation, earlier put into the die cavity with steel reinforcement framework 110, the staff is according to the construction demand in tunnel, adjusts tenon 131 and fourth of twelve earthly branches portion 132 inclination, makes the matching nature between prefabricated module 100 better, treats after adjusting the inclination of tenon 131 or fourth of twelve earthly branches portion 132, fixes tenon 131 or fourth of twelve earthly branches portion 132 on steel reinforcement framework 110 through the welding.
In some embodiments of the present invention, the mortise and tenon structure 130 further includes an anti-slip rod, the mortise and tenon structure 130 is provided with a first wedge hole 137 on the tenon 131, a second wedge hole 138 on the mortise 132, and the first wedge hole 137 and the second wedge hole 138 are adapted to an outer contour of the anti-slip rod when they are spliced together.
In order to further improve the stability between the adjacent prefabricated modules 100, after the prefabricated modules 100 are spliced, the anti-falling rod is inserted, so that the stability of the installation structure of the prefabricated modules 100 can be further improved, and a good anti-falling effect is achieved.
In some embodiments of the present invention, the prefabricated module 100 further includes a top bracing mechanism, the top bracing mechanism is provided with top bracing screws 140 at four corners of the steel reinforcement framework 110, the upper end of the top bracing screw 140 is provided with a plurality of legs 141 which are opened outwards, and the legs 141 are used for abutting against the tunnel surface.
Referring to fig. 5, in the present embodiment, by providing the shoring screws 140 at the four corners of the steel-bar framework 110, the heights of the shoring screws 140 can be adjusted, which not only enables the prefabricated members of the vault to be adapted to the shape of the vault of the tunnel, but also reserves a grouting space. After the concrete slurry injected between the prefabricated members of the arch crown and the arch crown of the tunnel is solidified, the jacking screws 140 serve as reinforcing ribs to improve the structural strength of the prefabricated members of the arch crown and the whole arch crown of the tunnel.
In some embodiments of the present invention, the prefabricated module 100 is provided with a reserved anchor hole 124, and the arch-roof prefabricated element is provided with an anchor rod corresponding to the reserved anchor hole 124.
When the prefabrication module 100 is installed, the anchor rod is drilled into the tunnel rock layer from the anchor rod hole 124, the function of pre-fixing the vault prefabrication component can be achieved, and after the vault prefabrication component and the anchor rod are installed, grouting filling is conducted from the bottom of the anchor rod. The vault prefabricated part which is filled by grouting is tightly combined with the vault of the tunnel, and the strength is high.
In some embodiments of the present invention, the pre-form modules 100 have a clamp groove 125 formed therein.
Referring to fig. 2 to 5, specifically, the vault prefabricated component is formed by splicing a plurality of prefabricated modules 100, and each prefabricated module 100 comprises a steel bar framework 110, a concrete matrix 120, a mortise and tenon structure 130 and a jacking mechanism. Tenon fourth of twelve earthly branches structure 130 is provided with tenon 131 in one side of framework of steel reinforcement 110, the opposite side is provided with fourth of twelve earthly branches portion 132, and tenon fourth of twelve earthly branches structure 130 passes through the locating hole and the arc regulation hole is installed on framework of steel reinforcement 110. The top bracing mechanism is provided with top bracing screws 140 at four corners of the steel reinforcement framework 110. The reinforcement cage 110 is pre-embedded in the concrete matrix 120 with the arch structure, wedge surfaces 121 are arranged on the left side and the right side of the concrete matrix 120, and avoidance positions exposing the tenon-and-mortise structures 130 are arranged for splicing the prefabricated modules 100 on the two adjacent sides; the front side and the rear side of the concrete matrix 120 are respectively provided with an arc-shaped groove 122 or an arc-shaped convex part 123, and two adjacent rows of arch-shaped prefabricated parts can be spliced together through the arc-shaped grooves 122 and the arc-shaped convex parts 123. The concrete base 120 is reserved with an anchor rod hole 124 and a clamp groove 125. By providing the jig groove 125, other mechanical devices can be used to install the prefabricated module 100, which not only improves the construction efficiency, but also saves the labor cost. In some embodiments, the clamp groove 125 is a through hole, and the clamp groove 125 can be used as an exhaust hole during grouting filling, so that insufficient grouting filling caused by negative pressure existing between the prefabricated arch part and the tunnel arch is avoided.
The invention also provides a two-lining tunnel trolley which is used for installing the vault prefabricated component in the embodiment, and specifically comprises a vehicle frame 200, a plane motion mechanism 300 and a module installation mechanism 400, wherein the module installation mechanism 400 is installed on the vehicle frame 200 through the plane motion mechanism 300 and can be moved and adjusted under the action of the plane motion mechanism 300, a clamp groove 125 is formed in the prefabricated module 100, and the module installation mechanism 400 is provided with a clamping structure matched with the clamp groove 125 and used for clamping the prefabricated module 100 through the clamp groove 125
Referring to fig. 6 to 9, the two-lined tunnel trolley comprises a frame 200, a plane movement mechanism 300 and a module mounting mechanism 400, wherein the plane movement mechanism 300 is mounted on the frame 200, the module mounting mechanism 400 is mounted on the plane movement mechanism 300, and by means of the design of the structure, the module mounting mechanism 400 can move in an X-Y plane, so that a plurality of rows of prefabricated modules 100 can be mounted conveniently.
In some embodiments of the present invention, the module mounting mechanism 400 includes a base 401, a rotary mounting base 402, a first rotary arm 403, a second rotary arm 404, a jaw assembly 410, a first hydraulic cylinder 405, a second hydraulic cylinder 406, and a third hydraulic cylinder 407, the rotary mounting base 402 is rotatably mounted on the base 401 about a vertical axis direction, a lower end of the first rotary arm 403 is rotatably mounted on the rotary mounting base 402 about a horizontal axis direction, the second rotary arm 404 is rotatably mounted on an upper end of the first rotary arm 403 about a horizontal axis, the jaw assembly 410 is mounted on the second rotary arm 404 at an end away from a rotation center of the second rotary arm 404, the first hydraulic cylinder 405 is disposed between the rotary mounting base 402 and the first rotary arm 403 for controlling the first rotary arm 403 to rotate, the second hydraulic cylinder 406 is disposed between the first rotary arm 403 and the second rotary arm 404, for controlling rotation of the second rotating arm 404, and a third hydraulic cylinder 407 is mounted on the second rotating arm 404 and connected to the jaw assembly 410 for controlling clamping or unclamping of the jaw assembly 410.
Referring to fig. 8, specifically, the structural assembly of the module mounting mechanism 400 includes a base 401, a rotary mounting base 402, a first rotary arm 403, a second rotary arm 404 and a clamping jaw assembly 410, wherein the rotary mounting base 402 is rotatably mounted on the base 401 around a vertical axis, the lower end of the first rotary arm 403 is rotatably mounted on the rotary mounting base 402 around a horizontal axis, the second rotary arm 404 is rotatably mounted on the upper end of the first rotary arm 403 around a horizontal axis, and the clamping jaw assembly 410 is mounted at one end of the second rotary arm 404 away from the rotation center thereof. The driving assembly of the module mounting mechanism 400 comprises a first hydraulic cylinder 405, a second hydraulic cylinder 406 and a third hydraulic cylinder 407, the first hydraulic cylinder 405 being mounted between the rotary mounting block 402 and the first rotary arm 403 for controlling the rotation of the first rotary arm 403 about a horizontal axis. A second hydraulic cylinder 406 is installed between the first turning arm 403 and the second turning arm 404 for controlling the second turning arm 404 to turn with respect to the first turning arm 403. A third hydraulic cylinder 407 is mounted on the ground second pivot arm for controlling the clamping or unclamping of the jaw assembly 410. In the embodiment, a multi-degree-of-freedom design structure is adopted, and the clamping jaw assemblies 410 of the module mounting mechanism 400 can move in a horizontal plane and a vertical plane, so that the prefabricated modules 100 can be clamped and mounted conveniently; the hydraulic cylinder is used as driving power, so that the supporting capacity is high, and stable clamping force can be provided.
In some embodiments of the present invention, the jaw assembly 410 includes a mounting block 411, a first clamping arm 412 and a second clamping arm 413, a lower end of the mounting block 411 is fixedly mounted on the second rotating arm 404 and is located at one end far away from a rotation center of the second rotating arm 404, a middle position of the first clamping arm 412 is rotatably mounted at one end of the mounting block 411, a middle position of the second clamping arm 413 is rotatably mounted at the other end of the mounting block 411, one end of the first clamping arm 412 and one end of the second clamping arm 413 are vertically installed in a staggered manner and are simultaneously mounted on a piston rod end of the third hydraulic cylinder 407, so as to realize opening and closing of the other end of the first clamping arm 412 and the other end of the second clamping arm 413 when the third hydraulic cylinder 407 expands and contracts.
Referring to fig. 8 and 9, specifically, first arm lock 412 and second arm lock 413 are L type structure, the short side of first arm lock 412 is provided with first clamping part, the long side is provided with first mounting hole, the short side of second arm lock 413 is provided with the second clamping part, the long side is provided with the second mounting hole, first mounting hole and second mounting hole dislocation are installed on the piston rod tip of third pneumatic cylinder 407, first mounting hole and second mounting hole are the arc hole in this embodiment, the arc center of arc hole coincides with the center of rotation that corresponds the arm lock, when third pneumatic cylinder 407 is flexible, the end of piston rod tip moves in the arc hole, and then drive first arm lock 412 and second arm lock 413 and rotate, thereby reach the purpose of pressing from both sides tightly or unclamping. The design of the jaw assembly 410 using a scissor-type structure enables stable clamping and installation of the precast modules 100 through the clamp holes in the precast modules 100.
In some embodiments of the present invention, the planar motion mechanism 300 includes a first rail 310 and a second rail 320, the first rail 310 is mounted on the frame 200, the second rail 320 is slidably mounted on the first rail 310, a length direction of the second rail 320 is perpendicular to a length direction of the first rail 310, and the base 401 is slidably mounted on the second rail 320.
Through the design of the structure, the module installation mechanism 400 can move rapidly in an X-Y plane in multiple directions, and the construction efficiency is improved.
In some embodiments of the invention, the bottom of the carriage 200 is provided with multiple sets of rail wheels and the rail wheels are slidably mounted on a rail system at the bottom of the tunnel.
With the above-described structure of this embodiment, the two-lined tunnel carriage can be constructed in stages.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. The vault prefabricated component is characterized by comprising a plurality of prefabricated modules, wherein wedge surfaces and tenon-and-mortise structures are arranged on the left side and the right side of each prefabricated module, two prefabricated modules which are adjacent to each other on the left side and the right side can be spliced through the tenon-and-mortise structures, and the wedge surfaces of the two prefabricated modules which are adjacent to each other on the left side and the right side are mutually attached during splicing;
the prefabricated module comprises a steel bar framework and a concrete matrix, the steel bar framework is embedded in the concrete matrix, the concrete matrix is arranged into an arch structure corresponding to the arch crown radian of the tunnel, and the wedge surfaces are arranged on the left side and the right side of the arch structure;
the front ends of the prefabricated modules are provided with arc-shaped grooves, the rear ends of the prefabricated modules are provided with arc-shaped protrusions, and the two prefabricated modules which are adjacent in the front and back are matched and kept to be attached through the arc-shaped grooves and the arc-shaped protrusions;
the tenon fourth of twelve earthly branches structure in steel reinforcement frame's left side is provided with the tenon, the right side is provided with fourth of twelve earthly branches portion, the tenon for the wedge surface outwards protrudes, the tenon lower extreme is provided with first locating hole, the upper end is provided with first arc regulation hole, steel reinforcement frame is provided with and passes first locating hole first round pin axle construction in first arc regulation hole, the tenon can wind first locating hole rotates and adjusts the inclination of tenon, the lower extreme of fourth of twelve earthly branches portion is provided with the second locating hole, the upper end is provided with second arc regulation hole, steel reinforcement frame is provided with and passes the second locating hole the second round pin axle construction in second arc regulation hole, fourth of twelve earthly branches portion can wind the second locating hole rotates and adjusts the inclination of fourth of twelve earthly branches portion.
2. The vault prefabricated component of claim 1, wherein said prefabricated module further comprises a top bracing mechanism, said top bracing mechanism is provided with a top bracing screw rod upwards at four corners of said steel reinforcement framework, said top bracing screw rod is provided with a plurality of legs which are outwardly opened at upper ends thereof, said legs are used for abutting against the surface of the tunnel.
3. The vault preform as claimed in claim 2, wherein said preform module has a jig groove formed thereon.
4. A two-lining tunnel trolley is used for clamping the vault prefabricated component of claim 1 and specifically comprises a frame, a plane motion mechanism and a module mounting mechanism, wherein the module mounting mechanism is mounted on the frame through the plane motion mechanism and can be moved and adjusted under the action of the plane motion mechanism, a clamp groove is formed in the prefabricated module, and the module mounting mechanism is provided with a clamping structure matched with the clamp groove and used for clamping the prefabricated module through the clamp groove.
5. The two-liner tunnel trolley of claim 4 wherein the module mounting mechanism includes a base, a swivel mount, a first swivel arm rotatably mounted on the base about a vertical axis, a second swivel arm rotatably mounted on the swivel mount about a horizontal axis, a jaw assembly mounted on the second swivel arm at an end remote from a center of rotation of the second swivel arm, a first hydraulic cylinder disposed between the swivel mount and the first swivel arm for controlling rotation of the first swivel arm, a second hydraulic cylinder disposed between the first swivel arm and the second swivel arm, and a third hydraulic cylinder, the third hydraulic cylinder is installed on the second rotating arm and connected with the clamping jaw assembly to control the clamping jaw assembly to clamp or unclamp.
6. The two-lining tunnel trolley according to claim 5, wherein the clamping jaw assembly comprises a mounting frame, a first clamping arm and a second clamping arm, the lower end of the mounting frame is fixedly mounted on the second rotating arm and is located at one end far away from the rotating center of the second rotating arm, the middle position of the first clamping arm is rotatably mounted at one end of the mounting frame, the middle position of the second clamping arm is rotatably mounted at the other end of the mounting frame, one end of the first clamping arm and one end of the second clamping arm are vertically installed in a staggered manner and are simultaneously mounted on the end portion of the piston rod of the third hydraulic cylinder, so that the other end of the first clamping arm and the other end of the second clamping arm can be opened and closed when the third hydraulic cylinder is telescopic.
7. The two-lined tunnel trolley of claim 6, wherein the planar motion mechanism comprises a first rail and a second rail, the first rail being mounted on the carriage, the second rail being slidably mounted on the first rail, and a length of the second rail being perpendicular to a length of the first rail, the base being slidably mounted on the second rail.
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| CN202111260975.4A CN113700499B (en) | 2021-10-28 | 2021-10-28 | Vault prefabricated component |
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| CN114592888A (en) * | 2022-05-11 | 2022-06-07 | 河北东风世景轨道有限公司 | Tunnel trolley cantilever crane concrete construction pouring system |
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| CN113700499B (en) | 2022-02-11 |
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