CN117536646A - Tunnel lining disassembly-free plug template device and working method thereof - Google Patents
Tunnel lining disassembly-free plug template device and working method thereof Download PDFInfo
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- CN117536646A CN117536646A CN202311711187.1A CN202311711187A CN117536646A CN 117536646 A CN117536646 A CN 117536646A CN 202311711187 A CN202311711187 A CN 202311711187A CN 117536646 A CN117536646 A CN 117536646A
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- free plug
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 102
- 239000010959 steel Substances 0.000 claims abstract description 102
- 239000006260 foam Substances 0.000 claims abstract description 29
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000010079 rubber tapping Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- PTVDYARBVCBHSL-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu] PTVDYARBVCBHSL-UHFFFAOYSA-N 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 238000009415 formwork Methods 0.000 claims description 5
- 210000002615 epidermis Anatomy 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 37
- 239000010410 layer Substances 0.000 abstract description 10
- 239000002344 surface layer Substances 0.000 abstract description 3
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 230000008602 contraction Effects 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004078 waterproofing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/0221—Vinyl resin
- B32B2266/0235—Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to the field of tunnel construction, in particular to a tunnel lining disassembly-free plug template device and a working method thereof. The special foam board comprises two flat steel reinforcing boards and a special foam board clamped between the two flat steel reinforcing boards, wherein the surface layer of the special foam board is a thin-layer hard shell, a foam structure is arranged between the two layers of surfaces, the flat steel reinforcing boards comprise flat steel plates and flat steel bars, the flat steel bars are multiple and combined into a grid shape, and the flat steel boards are provided with multiple flat steel boards which are arranged in grid holes formed by the multiple flat steel bars. After the disassembly-free plug template is adopted, the construction time of the plug template can be effectively shortened, compared with a traditional plug template, the disassembly-free plug template does not need to wait for the concrete strength to meet the requirement and then perform the form removal, the equal-strength time and the form removal time are not occupied, meanwhile, the fixation of lower bin binding steel bars is not influenced by the application of the disassembly-free plug template, and thus the synchronous performance of steel bar binding and plug template construction can be realized, and the lining circulation time is further shortened.
Description
Technical Field
The invention relates to the field of tunnel construction, in particular to a tunnel lining disassembly-free plug template device and a working method thereof.
Background
Tunnel engineering is applied to the present, and is mainly used for railway, highway, mine, water conservancy, municipal engineering and the like, and most tunnels are composed of primary support and secondary lining. The tunnel secondary lining generally adopts a steel mould trolley or a traversing steel mould trolley to pour, in the secondary lining concrete pouring process, one side of two ends of the trolley is contacted with formed concrete, a plug template is not needed, the other side is empty, the plug template is needed to be arranged, the plug template is an integral part in the tunnel secondary lining construction, and the plug template is mainly used for preventing concrete from leaking from two sides of the template and ensuring that the concrete can fill the whole tunnel section. In tunnel engineering, the use of end cap template has important meaning to guaranteeing construction quality, improvement engineering progress. The existing temporary spliced wood template is a traditional plug template, and is mainly formed by splicing a plurality of wood boards. The template has certain strength and stability, and can meet the requirements of common tunnel construction. However, the wood form has the defects that the time for manufacturing, installing and dismantling is long, and the wood form is easy to wear and deform after being used for a plurality of times, so that the construction quality is affected.
The traditional plug template needs the following steps: before concrete pouring, the vertical formwork is spliced into a complete plug formwork according to the section size of the tunnel and the formwork design requirement, and then the formwork is installed at a preset position to be tightly attached to the end face of the constructed concrete. In the process, the flatness, the perpendicularity and the strength of the template are ensured to meet the construction requirements. The equal strength means that in the concrete pouring process, after the concrete reaches a certain strength, the next working procedure can be performed. And in the equal strength period, the hardening condition of the concrete is closely observed, so that the stability and the safety of the template are ensured. The demolding is the last step of plug template construction. After the concrete reaches a predetermined strength, the form may be removed. In the form stripping process, care is taken to protect the surface of the constructed concrete and avoid damage caused by improper form stripping. Meanwhile, the template is cleaned and maintained for the next use. In one-cabin concrete pouring cycle, the sum of the plug template vertical mould, the equal strength and the demoulding and the binding time of the next-cabin concrete steel bar occupied by the plug template vertical mould and the equal strength and the demoulding is up to 20 hours at most, and is generally more than ten hours, so that the construction progress of the traveling trolley is greatly delayed, the advancement of the traveling trolley is greatly reduced, the traveling trolley is necessary to be improved, and the disassembly-free plug template is the most effective measure.
Disclosure of Invention
The invention provides a disassembly-free plug template device for tunnel lining and a working method thereof, which aim to solve the problem of low construction efficiency in installation and disassembly of a plug template when a tunnel is secondarily lined in the prior art.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a tunnel lining exempts from to tear open end cap template device, includes two band steel reinforcing plates and presss from both sides the purpose-made foam board in the middle of two band steel reinforcing plates, the top layer of purpose-made foam board is the thin layer crust, is foam structure between the two-layer epidermis, band steel reinforcing plate includes flat steel sheet and band steel strip, the band steel strip has a plurality ofly and makes up into grid form, the band steel plate is provided with a plurality ofly and a plurality of band steel plates and installs in the grid hole that a plurality of band steel strips constitute.
A plurality of connecting lugs are arranged on the grille formed by the flat steel bars, each connecting lug is provided with a mounting hole, a self-tapping bolt is arranged in each mounting hole, and the connecting lugs, the flat steel plates and the special foam plates are fixed together through the self-tapping bolts.
The grids formed by a plurality of flat steel bars are arc-shaped, a plurality of grids form an annular template, water stops are arranged on two sides of the middle of the annular template, and the water stops are perpendicular to the annular template.
The water stop is a copper water stop or a rubber water stop.
The special foam board is made of pvc.
The flat steel plate and the flat steel bar are made of steel materials.
A working method of a tunnel lining disassembly-free plug template device comprises the following steps:
if the to-be-poured bin is the Nth bin, the following procedure is carried out:
s100, synchronously completing the pre-fixing of binding steel bars of the (N+1) th bin part when the (N-1) th bin concrete is poured;
s200, after the concrete pouring in the N-1 bin is completed, moving the hole template positioned in the N-2 bin to the N bin for positioning;
s300, fixing the disassembly-free plug template at the joint of the Nth bin and the (n+1) th bin;
s400, pouring concrete until the concrete pouring of the Nth bin is completed, and simultaneously, fixing all the residual binding steel bars of the (n+1) th bin; and (5) moving the cavity template positioned in the N-1 bin to the (N+1) th bin for positioning, namely entering the next pouring cycle.
In S100, when the binding bar in the n+1th bin is fixed, the end of the bar connected to the N bin is floated and is not fixed.
In S300, the flat steel plate of the disassembly-free plug template is fixed with the floating binding steel bars at the end part of the (n+1) th bin in a welding mode.
The beneficial effects of the invention are as follows:
1. after the disassembly-free plug template is adopted, the construction time of the plug template can be effectively shortened. Compared with the traditional plug template, the disassembly-free plug template does not need to wait for the concrete strength to meet the requirement and then disassemble the mould, and does not occupy equal strength time and demolding time. Therefore, the disassembly-free plug template can greatly shorten the construction time and improve the progress efficiency of engineering. Meanwhile, the application of the disassembly-free plug template does not influence the fixation of the binding steel bars of the lower bin, so that the synchronous execution of the binding steel bar construction and the plug template construction can be realized, and the lining cycle time is further shortened.
2. When the traveling trolley is combined with the disassembly-free plug template, a continuous pouring construction mode can be realized. The traveling trolley can continuously construct in the tunnel without stopping the procedures of standing, equal strength and demolding of the traditional plug template. The application of the disassembly-free plug template enables continuous casting of the traveling trolley to be smoother and more efficient, and construction efficiency and engineering progress are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a tamper-free plug template according to the present invention;
fig. 2 is a schematic diagram of the invention after the installation of the disassembly-free plug template.
Reference numerals: 1. a flat steel reinforcing plate; 2. a special foam board; 3. a flat steel plate; 4. a flat steel bar; 5. a mounting hole; 6. binding reinforcing steel bars; 7. and a water stop.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown.
The embodiment of the invention provides a tunnel lining disassembly-free plug template device, which is shown in the following combined figures 1 and 2, and comprises two flat steel reinforcing plates 1 and a special foam plate 2 clamped between the two flat steel reinforcing plates 1, wherein the surface layer of the special foam plate 2 is a thin-layer hard shell, a foam structure is arranged between two layers of surfaces, the flat steel reinforcing plates 1 comprise flat steel plates 3 and flat steel plates 4, the flat steel plates 4 are multiple and combined into a grid shape, and the flat steel plates 3 are provided with multiple flat steel plates 3 which are arranged in grid holes formed by the flat steel plates 4.
The surface layer of the special foam board 2 is a thin-layer hard shell, plays a role in equalizing pressure in secondary lining construction of tunnels, ensures the surface of the secondary lining joint to be more regular, ensures the flatness of the external flat steel reinforcing board 1, ensures the sealing of the plug to be tighter, and prevents leakage after concrete is poured in during secondary lining construction. Meanwhile, the foam structure in the special foam board 2 can provide a certain expansion and contraction amount, and enough expansion and contraction space is reserved for the seam of the secondary lining. When the concrete after the secondary lining is completed generates volume change under the action of heat expansion and cold contraction, the special foam board 2 can provide a certain expansion and contraction amount, and prevent the lining from being concentrated in pressure under the influence of temperature change or other factors, thereby reducing the risk of lining cracking. In this way, the custom foam deck 2 ensures the overall stability and durability of the lining structure. The design not only improves the construction efficiency, but also ensures the stability and durability of the lining structure.
A plurality of connecting lugs are arranged on the grid formed by a plurality of flat steel bars 4, each connecting lug is provided with a mounting hole 5, a self-tapping bolt is arranged in each mounting hole 5, and the connecting lugs, the flat steel plates 3 and the special foam plates 2 are fixed together through the self-tapping bolts. The flat steel plate 3 is tightly connected with the special foam plate 2 through self-tapping screws, so that the overall stability and firmness of the disassembly-free plug template can be ensured. In the construction process, the flat steel plate 3 and the special foam plate 2 can be firmly fixed together by screwing the self-tapping bolts, so that the stability and the reliability of the device are ensured. The mode of connecting the flat steel plate 3 and the special foam plate 2 through the self-tapping screw is simple, practical and easy to construct. Meanwhile, the self-tapping screw can be arranged and fixed in a manner that the force applied to the device can be effectively dispersed, so that the stability of the device is improved.
The material of the special foam board 2 is pvc. The PVC foam board is light, firm and has the characteristics of good corrosion resistance, water resistance, fire resistance and the like, is very suitable for being used in the tunnel lining disassembly-free plug template device, has certain flexibility and compressibility, can adapt to the shape of a tunnel wall and provides enough supporting force. In addition, the PVC material has good durability and ageing resistance, can keep the physical characteristics and appearance of the PVC material for a long time, and ensures the stability and reliability of the disassembly-free plug template.
The flat steel plate 3 and the flat steel bar 4 are made of Q235 steel or Q355 steel, and the two steels have higher tensile strength, can bear larger tensile force and can effectively resist deformation and abrasion. This is important for securing the tamper-evident plug forms at the seams. The disassembly-free plug template is used for preventing leakage after concrete pouring and ensuring the tightness of the tunnel. The material with higher hardness can effectively prevent deformation of the disassembly-free plug template after concrete is poured, so that tightness is not affected. Meanwhile, in the manufacturing process of the flat steel plate 3 and the flat steel bar 4, the shape stability of the flat steel plate and the flat steel bar can be kept, and the flat steel plate is not easy to deform or damage. In addition, the two steels have good corrosion resistance. They can resist the erosion of external environmental factors such as oxidation, rust and the like, and prolong the service lives of the flat steel plates 3 and the flat steel bars 4. And can be directly welded with binding steel bars 6 in the installation stage of the disassembly-free plug template.
The grids that a plurality of flat steel bars 4 are formed are circular arc, and an annular template is constituteed to a plurality of grids, and the middle part both sides of annular template all are equipped with waterstop 7, and waterstop 7 perpendicular to annular template. The water stop 7 is usually made of rubber or copper or the like for preventing water leakage. In this embodiment, a copper water stop 7 is selected for use. The copper waterstop 7 has good corrosion resistance, is applicable to the environment of long-term damp and water soaking, and in addition, the copper waterstop 7 also has certain flexibility, can adapt to the change of construction environment, ensures sealed effect. One end of each copper water stop belt 7 is vertically fixed in the middle of the annular template, and the other end is poured in the secondary lining layer. Such an installation may provide sealing and waterproofing.
A working method of a tunnel lining disassembly-free plug template device comprises the following steps:
if the to-be-poured bin is the nth bin, and is combined with the illustration of fig. 2, the disassembly-free plug template is taken as a boundary, the left side of the disassembly-free plug template is the nth bin, and the right side of the disassembly-free plug template is the (n+1) th bin, the following procedure is carried out:
s100, when the N-1 bin concrete pouring is carried out, the pre-fixing of the binding steel bars 6 of the (N+1) bin part can be synchronously completed. And when the binding steel bar 6 of the (N+1) th bin is fixed, the end part of the binding steel bar 6 connected with the (N) th bin can float without being fixed. In the subsequent construction, the floating end part of the binding steel bar 6 can be fully utilized to mount the disassembly-free plug template without additional disassembly procedures. While the operation of floating the ends of the tie bars 6 is performed, it is necessary to ensure that the floating tie bars 6 can be kept stable. Temporary support or fixtures may be used to maintain the position of the floating tie bars 6. The method can improve the construction efficiency, reduce the waiting time between working procedures and facilitate the subsequent disassembly-free plug template installation.
And S200, after the concrete in the N-1 bin is poured, the movable body template of the N-1 bin is not moved to fully coagulate the concrete, and the N-2 bin cavity template is removed. After the hole body template is removed, the hole body template positioned in the N-2 th bin is moved to the N th bin for positioning. The purpose of this is to facilitate construction of the nth bin. When the cavity template is removed and shifted, the concrete in the N-2 bin needs to be ensured to reach enough strength and can bear the force in the process of removing and shifting. When the cavity template is removed, the cavity template needs to be removed according to design or construction requirements, and the concrete structure is ensured not to be damaged in the removal process. Meanwhile, the removed hole form needs to be cleaned and checked, so that the construction quality problem is prevented, and the hole form can be safely moved to an Nth bin and reused.
S300, fixing the disassembly-free plug template at the joint of the N bin and the (n+1) bin. Firstly, preparing a required disassembly-free plug template, and precisely cutting and manufacturing the disassembly-free plug template according to specific size and design requirements before installation so as to ensure the tightness of the disassembly-free plug template when the secondary lining is constructed, and improve the construction precision and quality. After the disassembly-free plug template is manufactured, the flat steel plate 3 of the disassembly-free plug template is welded with the floating binding steel bar 6 at the end part of the (n+1) th bin. The flat steel plate 3 is first aligned with the floating tie bar 6 and then welded using a welding apparatus. After the welding is finished, the welding point is ensured to be firm and reliable, and no looseness or gap exists. After welding is completed, the fixed disassembly-free plug template is inspected. Ensuring that a stable supporting and sealing effect is provided. When the secondary lining of the tunnel is constructed, a complete plug sealing surface is required to be formed by a plurality of disassembly-free plug templates, the disassembly-free plug templates are sequentially welded and fixed on the floating binding steel bars 6 at the end part of the (N+1) th bin to form a sealed annular sealing surface, so that the connection of each section of templates is ensured to be tight, and concrete materials are effectively plugged in a designated area.
After the fixation of the multi-section disassembly-free plug template is completed, water stops 7 are arranged on two sides of the middle of the annular template, and the water stops 7 are perpendicular to the annular template. The water stop 7 is usually made of rubber or copper or the like for preventing water leakage. In this embodiment, a copper water stop 7 is selected for use. The copper waterstop 7 has good corrosion resistance, is applicable to the environment of long-term damp and water soaking, and in addition, the copper waterstop 7 also has certain flexibility, can adapt to the change of construction environment, ensures sealed effect. One end of each copper water stop belt 7 is vertically fixed in the middle of the annular template, and the other end is poured in the secondary lining layer. Such an installation may provide sealing and waterproofing. The water stop belt 7 can further seal the gap between the disassembly-free plug template and the structure, and water oozing from the tunnel rock wall after the secondary lining construction is completed is prevented from oozing from the joint. This ensures the sealability and waterproofing performance of the secondary lining structure.
S400, starting to perform concrete pouring, pouring concrete into the Nth bin until the concrete pouring of the Nth bin is completed, and fixing the residual binding steel bars 6 of the (n+1) th bin by using pouring time in the concrete pouring process. Therefore, the time can be saved, and the construction efficiency can be improved. When the binding steel bars 6 are fixed, the accurate and reliable fixing of the binding steel bars 6 is required to be ensured, and the design requirements are met. After the concrete pouring of the N bin is completed, the cavity template positioned in the N-1 bin can be moved to the N+1th bin for positioning, and after the cavity template is moved to the N+1th bin, the next pouring cycle can be started, and the concrete pouring work is continued.
After the disassembly-free plug template is adopted, the construction time of the plug template can be effectively shortened, compared with the traditional plug template, the disassembly-free plug template does not need to wait for the concrete strength to meet the requirement and then disassemble the mould, and the equal-strength time and the mould disassembling time are not occupied, so that the construction time can be greatly shortened by the disassembly-free plug template, the progress efficiency of engineering is improved, the fixation of the lower bin binding steel bars 6 is not influenced by the application of the disassembly-free plug template, the synchronous execution of the fixation of the binding steel bars 6 and the construction of the plug template can be realized, and the lining circulation time is further shortened. In addition, when the traveling trolley is combined with the disassembly-free plug template, a continuous pouring construction mode can be realized. The through type trolley can be continuously constructed in the tunnel, and the application of the disassembly-free plug template enables continuous pouring of the through type trolley to be smoother and more efficient. Thus, the construction efficiency and the engineering progress can be greatly improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention. With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention.
Claims (9)
1. The utility model provides a tunnel lining exempts from to tear open end cap template device, its characterized in that includes two band steel reinforcing plate (1) and presss from both sides special foam board (2) in the middle of two band steel reinforcing plate (1), the top layer of special foam board (2) is the thin layer crust, is foam structure between the two-layer epidermis, band steel reinforcing plate (1) includes band steel (3) and band steel (4), band steel (4) have a plurality ofly and make up into grid form, band steel (3) are provided with a plurality of and a plurality of band steel (3) are installed in the grid hole that a plurality of band steel (4) constitute.
2. The tunnel lining disassembly-free plug template device according to claim 1, wherein a plurality of connecting lugs are arranged on a grid formed by a plurality of flat steel bars (4), each connecting lug is provided with a mounting hole (5), self-tapping bolts are arranged in the mounting holes (5), and the connecting lugs, the flat steel plates (3) and the special foam plates (2) are fixed together through the self-tapping bolts.
3. The tunnel lining disassembly-free plug template device according to claim 1, wherein a grid formed by a plurality of flat steel bars (4) is arc-shaped, a plurality of grids form an annular template, water stops (7) are arranged on two sides of the middle of the annular template, and the water stops (7) are perpendicular to the annular template.
4. A tunnel lining disassembly-free plug formwork device according to claim 3, characterized in that the water stop (7) is a copper water stop (7) or a rubber water stop (7).
5. The tunnel lining disassembly-free plug template device according to claim 1, wherein the special foam board (2) is made of pvc.
6. The tunnel lining disassembly-free plug template device according to claim 1, wherein the flat steel plate (3) and the flat steel bar (4) are made of steel materials.
7. A method of operating a tunnel lining disassembly-free plug template apparatus according to any one of claims 1 to 6, comprising the steps of:
if the to-be-poured bin is the Nth bin, the following procedure is carried out:
s100, synchronously completing the pre-fixing of the binding steel bars (6) of the (N+1) th bin part when the (N-1) th bin concrete is poured;
s200, after the concrete pouring in the N-1 bin is completed, moving the hole template positioned in the N-2 bin to the N bin for positioning;
s300, fixing the disassembly-free plug template at the joint of the Nth bin and the (n+1) th bin;
s400, pouring concrete until the concrete pouring of the N bin is completed, simultaneously fixing all the residual binding steel bars (6) of the N+1th bin, and moving the cavity template positioned in the N-1 bin to the N+1th bin for positioning, namely entering the next pouring cycle.
8. The working method of the tunnel lining disassembly-free plug template device according to claim 7, wherein in the step S100, when the binding steel bars (6) of the n+1th bin are fixed, the ends of the binding steel bars (6) connected with the N bin are floated and are not fixed.
9. The working method of the tunnel lining disassembly-free plug template device according to claim 7, wherein in the step S300, a flat steel plate (3) of the disassembly-free plug template is fixed with a binding steel bar (6) floating at the end part of an n+1th bin in a welding mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311711187.1A CN117536646A (en) | 2023-12-13 | 2023-12-13 | Tunnel lining disassembly-free plug template device and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311711187.1A CN117536646A (en) | 2023-12-13 | 2023-12-13 | Tunnel lining disassembly-free plug template device and working method thereof |
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| CN117536646A true CN117536646A (en) | 2024-02-09 |
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| CN202311711187.1A Pending CN117536646A (en) | 2023-12-13 | 2023-12-13 | Tunnel lining disassembly-free plug template device and working method thereof |
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| Country | Link |
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| CN (1) | CN117536646A (en) |
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