Visual end mold of tunnel steel mold trolley and construction method

Abstract

The invention discloses a tunnel steel mould trolley visual end mould and a construction method, the tunnel steel mould trolley visual end mould comprises an end mould body, the left end and the right end of the end mould body are respectively provided with a male joint and a female joint which can connect a plurality of end mould bodies, and the end mould body comprises an upper module, a lower module and a fastening assembly; the upper module comprises an upper side plate and a top plate which are in L-shaped connection, a guide cylinder is arranged on the inner side of the top plate in the direction of the upper side plate, and a gap is formed between the guide cylinder and the upper side plate; the lower module comprises a lower side plate and a bottom plate which are connected in an L shape. The inner side of the lower side plate is provided with a guide sliding groove and a fastening assembly in the direction of the lower side plate. The upper module and the lower module are buckled with each other, the upper side plate and the lower side plate are in parallel contact with each other, the lower side plate stretches into the gap, the guide sliding groove stretches into the guide cylinder, and the top plate and the bottom plate move in the opposite direction or the back direction under the jacking action of the fastening assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel construction, in particular to a visual end form of a tunnel steel form trolley and a construction method. BACKGROUND

[0002] At present, tunnels are important projects in water conservancy projects. In the process of tunnel lining construction, the lining concrete settlement joint is a structure gap that allows deformation due to the consideration of uneven stress of the secondary lining structure and the expansion and contraction of the concrete structure. However, the construction joint and the settlement joint are the difficulties in tunnel waterproof treatment and the key link of the self-waterproofing of the secondary lining structure.

[0003] In the prior art, the trolley is used in combination with the end wood form for secondary lining construction. However, the water stop belt on the side without pouring concrete needs to be fixed and positioned by bending and folding during construction. The bending and folding often damages the waterproof effect of the water stop belt. SUMMARY

[0004] In order to solve the above technical problems, the present application provides a visual end form of a tunnel steel form trolley and a construction method. The visual end form replaces the end wood form in the prior art, avoiding the problem of fixing and positioning by bending and folding the water stop belt in traditional construction.

[0005] To solve the above technical problems, a technical solution provided by the present application is: a visual end form of a tunnel steel form trolley, comprising an end form body, characterized in that: the left and right ends of the end form body are respectively provided with male and female joints capable of connecting multiple end form bodies with each other, and the end form body comprises an upper module, a lower module and a fastening assembly.

[0006] The upper module comprises an upper side plate and a top plate connected in an L shape, a guide cylinder is arranged on the inner side of the top plate along the direction of the upper side plate, and a gap is arranged between the guide cylinder and the upper side plate.

[0007] The lower module comprises a lower side plate and a bottom plate connected in an L shape, a guide sliding groove and a fastening assembly are arranged on the inner side of the lower side plate along the direction of the lower side plate.

[0008] The upper module and the lower module are mutually engaged, the upper side plate and the lower side plate are in parallel contact with each other, the lower side plate extends into the gap, the guide sliding groove extends into the guide cylinder, and the top plate and the bottom plate move towards or away from each other under the jacking action of the fastening assembly.

[0009] Further, the fastening assembly comprises a fastening lead screw and a fastening support, the fastening support is in the shape of n, and the opening is fixed downward on the bottom plate and the lower side plate, the upper end of the fastening lead screw is on the inner side of the top plate, the lower end of the fastening lead screw is screwed into the screw hole on the fastening support and extends into the fastening support, and is connected with the reversing gear in the fastening support.

[0010] Further, the screw hole is thickened on the inner side of the top plate in contact with the fastening screw rod.

[0011] Further, a sliding block is arranged in the guide sliding groove, and a limiting screw rod penetrates through the guide cylinder, and the end of the limiting screw rod extending into the guide cylinder is screwed with the sliding block.

[0012] Further, triangular reinforcing ribs are arranged between the upper side plate and the top plate and between the lower side plate and the bottom plate.

[0013] Further, the upper module and the lower module are made of transparent hard plastic, and the upper side plate, the top plate, the guide cylinder and the reinforcing ribs are integrally formed, and the lower side plate, the bottom plate, the guide sliding groove, the fastening support and the reinforcing ribs are integrally formed.

[0014] To solve the above technical problems, another technical scheme provided by the application is: according to the construction method of the visual end mold of the tunnel steel mold trolley, characterized in that: the rock surface at the end of each bin is measured and laid out, and relevant data is collected, the measurement data is analyzed, and the end module assembly scheme is prepared;

[0015] After the trolley is moved to the position to be constructed and the lower water stop belt is laid on the lower end steel formwork of the trolley, a single visual end mold is assembled, the multiple visual end molds are installed on the lower water stop belt according to the assembly scheme and installation drawings.

[0016] Combined with the fastening screw rod and the upper and lower telescopic design of the visual end mold, the fastening screw rod is lifted to make the secondary lining water stop belt fully adhere to the initial support shotcrete surface, and the visual end mold construction is completed.

[0017] Further, the process of assembling the visual end mold is: the sliding block is put into the guide sliding groove on the lower module, the lower end of the fastening screw rod is screwed into the fastening support on the lower module, the upper module and the lower module are mutually buckled, the upper side plate and the lower side plate are in parallel contact with each other, the top plate and the bottom plate are parallel to each other, and the lower side plate extends into the gap between the guide cylinder and the upper side plate, the guide sliding groove extends into the guide cylinder, the upper end of the fastening screw rod is on the inner side of the top plate, one end of the limiting screw rod penetrates through the guide cylinder and is screwed with the sliding block, and the upper module and the lower module are fixed together.

[0018] Further, the process of making the waterproof belt fully close to the initial support shotcrete surface is: through the electric wrench to twist the limiting lead screw, the fixing between the upper and lower molds is released, but the limiting lead screw is still screwed with the slider, through the electric wrench to twist the fastening lead screw, the fastening lead screw is tightly pressed in the inner side of the top plate under the action of the screw hole of the fastening support, and the upper mold is pushed to move upwards along the guide cylinder, and the waterproof belt is pressed, so that the waterproof belt is fully close to the initial support shotcrete surface, through the electric wrench to twist the limiting lead screw, the fixing between the upper and lower molds is fixed,

[0019] Further, the rectangular cushion block and the inclined cushion block are arranged between the visual end mold and the lower end steel mold template, and the rectangular cushion block and the inclined cushion block are increased or decreased according to the change of the lining thickness.

[0020] The beneficial effects of the present application are:

[0021] 1. The application uses a new type of high polymer visual end mold, which avoids the problems of fixing and positioning through bending and folding of the waterproof belt in traditional construction, effectively protects the waterproof belt on the side of the un-poured concrete, reduces and eliminates the damage to the waterproof effect of the waterproof belt, and accurately positions the embedding position of the "waterproof belt" according to the design requirements through the extension plug board of the trolley, so that the waterproof belt remains flat and smooth at the preset interface part, effectively prevents the waterproof belt from deviating and misplacing during laying, and ensures that the waterproof belt does not roll, twist and locally wrinkle during pouring concrete, thereby greatly improving the self-waterproof function of the secondary lining.

[0022] 2. The high polymer visual end mold uses a new type of high polymer material, which has the advantages of wear resistance, anti-falling, lightness, and no adhesion to concrete, and combines the unique screw rod and the up-down telescopic design, through the jacking action of the fastening screw and the action of the rubber cushion block, the problem of large size difference of the end mold caused by over-excavation and under-excavation in actual construction is solved, the waterproof belt is fully close to the initial support shotcrete surface, and the problem of leakage of the end mold is avoided.

[0023] 3. In the application, the multifunctional cushion block is increased or decreased according to the change of the lining thickness during construction, the inclined cushion block is used for smooth transition, the problems of leakage of ordinary plug board and difficulty in installation and removal are solved, and the appearance quality of the end concrete is ensured.

[0024] In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0025] To more clearly illustrate the technical solutions in this invention or the prior art, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only two examples of this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of this application.

[0027] Figure 2 This is a schematic diagram of the structure used in this application.

[0028] In the diagram: 1-End formwork body, 2-Male and female connector, 3-Reinforcing rib, 4-Initial support sprayed concrete surface, 5-Lower steel formwork, 6-Rectangular pad, 7-Inclined pad, 8-Rubber pad;

[0029] 11 - Upper module, 12 - Lower module;

[0030] 111-Upper side plate, 112-Top plate, 113-Guide cylinder, 114-Gap, 115-Limit screw;

[0031] 121-Lower side plate, 122-Base plate, 123-Guide groove, 124-Fasting screw, 125-Fasting bracket, 126-Gear commutator. Detailed Implementation

[0032] Embodiments of the invention will now be described in detail with reference to the accompanying drawings. While some embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the invention. It should be understood that the drawings and embodiments of the invention are for illustrative purposes only and are not intended to limit the scope of protection of the invention.

[0033] The names of messages or information exchanged between the various devices, systems, equipment, and modules in the embodiments of this invention are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0034] Example 1

[0035] like Figures 1-2 As shown, a tunnel steel formwork trolley visualization end mold includes an end mold body 1. The left and right ends of the end mold body 1 are respectively provided with male and female connectors 2 that enable multiple end mold bodies 1 to connect with each other. The end mold body 1 includes an upper module 11, a lower module 12 and fastening components.

[0036] The upper module 11 comprises an upper side plate 111 and a top plate 112 connected in L shape, a guide cylinder 113 is arranged on the inner side of the top plate 112 along the direction of the upper side plate 111, and a gap 114 is arranged between the guide cylinder 113 and the upper side plate 111;

[0037] The lower module 12 comprises a lower side plate 121 and a bottom plate 122 connected in L shape, a guide sliding groove 123 and a fastening assembly are arranged on the inner side of the lower side plate 121 along the direction of the lower side plate 121;

[0038] The upper module 11 and the lower module 12 are buckled to each other, the upper side plate 111 and the lower side plate 121 are in parallel contact with each other, the lower side plate 121 extends into the gap 114, the guide sliding groove 123 extends into the guide cylinder 113, and the top plate 112 and the bottom plate 122 move towards or away from each other under the jacking action of the fastening assembly.

[0039] The problems of fixing and positioning by bending and folding the water stop belt in traditional construction are avoided, the water stop belt on the side without poured concrete is effectively protected, the damage to the waterproof effect of the water stop belt is reduced and eliminated, the embedding position of the "water stop belt" can be accurately positioned according to the design requirements by the trolley telescopic plug plate, the water stop belt can be kept flat and smooth at the preset interface, the deviation and misplacement of the water stop belt during laying can be effectively prevented, and the rolling, kinking and local wrinkling of the water stop belt during pouring concrete are ensured, thereby greatly improving the self-waterproof function of the secondary lining.

[0040] The fastening assembly comprises a fastening lead screw 124 and a fastening support 125, the fastening support 125 is in n-shaped structure and is fixedly arranged on the bottom plate 122 and the lower side plate 121 with the opening downward, the upper end of the fastening lead screw 124 is located on the inner side of the top plate 112, the lower end of the fastening lead screw 124 is screwed into the fastening support 125 after being screwed with the screw hole on the fastening support 125, and is connected with a gear reversing switch 126 in the fastening support 125; the gear reversing switch 126 is driven by an electric wrench, then the fastening lead screw 124 is rotated, and the fastening lead screw 124 moves upward under the action of the screw hole on the fastening support 125 to lift the upper module 11, so that the upper module 11 moves upward.

[0041] The guide sliding groove 123 is provided with a sliding block, and a limiting lead screw 115 is arranged on the guide cylinder 113 and extends into the guide cylinder 113, and the end of the limiting lead screw 115 extending into the guide cylinder 113 is screwed with the sliding block; when the upper module 11 and the lower module 12 slide up and down, the sliding block can slide up and down in the guide sliding groove 123, the upper module 11 and the lower module 12 can move after the limiting lead screw 115 is loosened, and the upper module 11 and the lower module 12 can be fixed together after the limiting lead screw 115 is tightened, so as to facilitate assembly and fixation.

[0042] Example 2

[0043] like Figure 1 As shown, this embodiment is obtained by describing the technical features of the top plate 112 and other features in detail based on the first embodiment. The remaining technical features are the same as those in the first embodiment, and the similarities will not be repeated here. The difference between this embodiment and the first embodiment is that the screw hole and the inner side of the top plate 112 that contacts the fastening screw 124 are thickened.

[0044] In this embodiment, the thickening treatment increases the structural strength and prevents the contact position of the fastening screw 124 from cracking during use, which would affect the sealing effect.

[0045] Example 3

[0046] like Figure 1 As shown, this embodiment is obtained by adding technical features such as reinforcing rib 3 on the basis of embodiment 2. The other technical features are the same as those in embodiment 2. The similarities will not be repeated here. The difference between this embodiment and embodiment 2 is that triangular reinforcing ribs 3 are provided between the upper side plate 111 and the top plate 112, and between the lower side plate 121 and the bottom plate 122.

[0047] In this embodiment, the reinforcing ribs 3 ensure the connection strength between the top plate 112 and the upper side plate 111, and between the bottom plate 122 and the lower side plate 121, thus ensuring the stability of the sealing.

[0048] Example 4

[0049] like Figure 1 As shown, this embodiment is obtained by describing the technical features of the upper module 11 and the lower module 12 in detail based on the third embodiment. The remaining technical features are the same as those in the third embodiment, and the similarities will not be repeated here. The difference between this embodiment and the third embodiment is that the upper module 11 and the lower module 12 are transparent high polymer rigid plastics, and the upper side plate 111, top plate 112, guide cylinder 113 and reinforcing rib 3 are integrally formed, and the lower side plate 121, bottom plate 122, guide groove 123, fastening bracket 125 and reinforcing rib 3 are integrally formed.

[0050] In this embodiment, both the upper module 11 and the lower module 12 are integrally molded structures, which are convenient to manufacture, install, and transport.

[0051] The process of using the overall technical solution formed by the above-mentioned technical features is another technical solution disclosed in this application. The technical solution is: a construction method for a visual end form of a tunnel steel formwork trolley, characterized in that: the rock surface at the end of each compartment is measured and laid out and relevant data is collected, the measurement data is analyzed, and an end module assembly plan is prepared.

[0052] The trolley is moved to the position to be constructed, the lower water stop belt is laid on the lower end steel formwork 5 of the trolley, the single visual end form is assembled, the multiple visual end forms are installed on the lower water stop belt according to the assembly scheme and the installation drawing, and the visual end form construction is performed;

[0053] In combination with the special fastening screw rod 124 and the up-and-down telescopic design of the visual end form, the two-lining water stop belt is fully attached to the initial support shotcrete surface 4 through the jacking action of the fastening screw rod 124, and the visual end form construction is completed.

[0054] The process of assembling the visual end form is that the sliding block is put into the guide sliding groove 123 on the lower module 12, the lower end of the fastening screw rod 124 is screwed into the fastening support 125 on the lower module 12, the upper module 11 and the lower module 12 are mutually buckled, the upper side plate 111 and the lower side plate 121 are in parallel contact with each other, the top plate 112 and the bottom plate 122 are parallel to each other, the lower side plate 121 extends into the gap 114 between the guide cylinder 113 and the upper side plate 111, the guide sliding groove 123 extends into the guide cylinder 113, the upper end of the fastening screw rod 124 is on the inner side of the top plate 112, one end of the limiting screw rod 115 penetrates the guide cylinder 113 and is screwed with the sliding block, and the upper module 11 and the lower module 12 are fixed together.

[0055] The process of fully attaching the water stop belt to the initial support shotcrete surface 4 is that the limiting screw rod is screwed by the electric wrench to release the fixation between the upper formwork and the lower formwork, but the limiting screw rod 115 is still screwed with the sliding block, the fastening screw rod 124 is screwed by the electric wrench, the fastening screw rod 124 is tightly pressed on the inner side of the top plate 112 under the action of the screw hole of the fastening support 125 and pushes the upper formwork to move upward along the guide cylinder 113, is pressed on the water stop belt, fully attaches the water stop belt to the initial support shotcrete surface, the limiting screw rod is screwed by the electric wrench to fix the upper formwork and the lower formwork,

[0056] The rectangular cushion block 6 and the inclined cushion block 7 are arranged between the visual end form and the lower end steel formwork, and the rectangular cushion block 6 and the inclined cushion block 7 are increased or decreased according to the change of the lining thickness; the rubber cushion block 8 is arranged between the visual end form and the two-lining water stop belt, and the stable transition is realized through the inclined cushion block, the problems of slurry leakage of the ordinary plug plate and difficult installation and removal are solved, and the appearance quality of the end concrete is ensured.

[0057] The new polymer material has the advantages of wear resistance, anti-falling, lightness, non-sticking concrete and the like, can fully cope with the problem of large size difference of end template caused by over-excavation and under-excavation in actual construction, during construction, the measurement personnel measures and lays out the rock surface at the end of each bin in advance and collects relevant data, analyzes the measurement data to make the end module assembly scheme and installation drawing in advance, and combines the unique screw rod and the up-down telescopic design of the module, through the jacking effect of the fastening screw, the full close contact between the plug plate and the water stop belt and the initial support shotcrete surface is ensured, and the problem of leakage caused by the poor sealing of the end template is avoided.

[0058] It should be noted that the above are only the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A visual end mold for a tunnel steel formwork trolley, comprising an end mold body, characterized in that: The left and right ends of the end mold body are respectively provided with male and female connectors that enable multiple end mold bodies to connect with each other. The end mold body includes an upper module, a lower module and a fastening assembly. The upper module includes an upper side plate and a top plate connected in an L-shape. A guide cylinder is provided on the inner side of the top plate along the direction of the upper side plate, and a gap is provided between the guide cylinder and the upper side plate. The lower module includes a lower side plate and a bottom plate connected in an L-shape. The inner side of the lower side plate is provided with a guide groove and a fastening assembly along the direction of the lower side plate. The upper and lower modules are interlocked, the upper and lower side plates are in parallel contact with each other, the lower side plate extends into the gap, the guide groove extends into the guide cylinder, and the top and bottom plates move towards each other or away from each other under the lifting action of the fastening assembly.

2. The tunnel steel formwork trolley visualization end mold according to claim 1, characterized in that: The fastening assembly includes a fastening screw and a fastening bracket. The fastening bracket has an n-shaped structure and is fixedly installed on the base plate and the lower side plate with the opening facing downward. The upper end of the fastening screw rests on the inner side of the top plate, and the lower end of the fastening screw is screwed into the screw hole on the fastening bracket and then extends into the fastening bracket to connect with the gear commutator inside the fastening bracket.

3. The tunnel steel formwork trolley visualization end mold according to claim 2, characterized in that: The screw hole and the inner side of the top plate in contact with the fastening screw are thickened, and the lower end of the fastening screw has a prism structure.

4. The tunnel steel formwork trolley visualization end mold according to claim 3, characterized in that: A slider is provided in the guide groove, and a limiting screw passes through the guide cylinder. The end of the limiting screw, which extends into the guide cylinder, is screwed to the slider.

5. The tunnel steel formwork trolley visualization end mold according to claim 1, characterized in that: Triangular reinforcing ribs are provided between the upper side plate and the top plate, and between the lower side plate and the bottom plate.

6. The tunnel steel formwork trolley visualization end mold according to claim 1, characterized in that: The upper and lower modules are made of transparent rigid polymer plastic, and the upper side plate, top plate, guide cylinder and reinforcing rib are integrally formed, as are the lower side plate, bottom plate, guide groove, fastening bracket and reinforcing rib.

7. The construction method of a tunnel steel formwork trolley with visualized end formwork according to any one of claims 1-6, characterized in that: The rock surface at the end of each compartment is measured and laid out, and relevant data is collected. The measurement data is analyzed, and an assembly plan for the end module is prepared. Move the trolley to the construction position, lay the lower waterstop on the steel template at the bottom of the trolley, assemble a single visual end mold, and install multiple visual end molds on the lower waterstop according to the assembly plan and installation drawings. Combining the existing fastening screws and telescopic design of the visual end formwork, the lifting action of the fastening screws 124 ensures a tight fit between the secondary lining waterstop and the initial support shotcrete surface, thus completing the construction of the visual end formwork.

8. The method for visual end formwork construction of a tunnel steel formwork trolley according to claim 7, characterized in that: The assembly process of the visual end module is as follows: the slider is placed in the guide groove on the lower module, the lower end of the fastening screw is screwed into the fastening bracket on the lower module, the upper module and the lower module are interlocked, the upper side plate and the lower side plate are in parallel contact with each other, the top plate and the bottom plate are parallel to each other, and the lower side plate extends into the gap between the guide cylinder and the upper side plate, the guide groove extends into the guide cylinder, the upper end of the fastening screw abuts against the inner side of the top plate, and one end of the limiting screw passes through the guide cylinder and is screwed into the slider, thus fixing the upper module and the lower module together.

9. A method for constructing a tunnel steel formwork trolley with visualized end formwork according to claim 7, characterized in that: The process of ensuring a tight fit between the waterstop and the initial support shotcrete surface is as follows: Using an electric wrench, the limiting screw is turned to release the fixing between the upper and lower formwork, but the limiting screw remains screwed to the slider. The tightening screw is then turned with the electric wrench, and under the action of the screw holes on the fastening bracket, the tightening screw presses against the inner side of the top plate, pushing the upper formwork upwards along the guide cylinder and pressing against the waterstop, ensuring a tight fit between the waterstop and the initial support shotcrete surface. Finally, the limiting screw is turned with the electric wrench to fix the upper and lower formwork together.

10. A method for constructing a tunnel steel formwork trolley with visualized end formwork according to claim 7, characterized in that: Rectangular and inclined pads are provided between the visual end mold and the lower steel mold template, and the rectangular and inclined pads are increased or decreased according to the lining thickness; rubber pads are provided between the visual end mold and the secondary lining waterstop.

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