Tunnel lining end template device

Abstract

The utility model relates to a tunnel lining end formwork device which comprises an end formwork steel part, an end formwork wood part, an L-shaped end plate and an inner pull lead screw assembly. The L-shaped end plate is connected with the steel part of the end template through a hook-shaped bolting lug plate, and the inner pull lead screw assembly comprises a bolt wedge block. The sectional type steel-wood combined structure has the advantages that the sectional type steel-wood combined structure is adopted, the traditional steel bar clamp design is omitted, the position of the end wood formwork can be freely adjusted, the smoothness of the end of concrete is ensured while the water stop belt is prevented from being bent and damaged, the construction efficiency is effectively improved, and the leakage risk is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel construction technical field especially including a tunnel lining end template device. BACKGROUND

[0002] The secondary lining is the safety reserve of the tunnel composite lining structure, and the self-waterproof effect is an important part of the tunnel waterproof and drainage. However, the traditional wood mold cannot meet the symmetry centering problem of the middle buried water stop belt in the secondary lining construction process, which may cause the waterproof effect of the middle buried water stop belt to fail, thereby causing the secondary lining leakage and other difficult problems. The novel L-shaped folding steel-wood combined end template overcomes the above shortcomings and can well solve the non-centering problem of the circumferential water stop belt in the secondary lining construction process, has the advantages of convenient installation and disassembly, rapid reinforcement and the like, effectively ensures the waterproof effect of the circumferential construction joint, and speeds up the secondary lining construction progress.

[0003] The traditional secondary lining end is processed in the form of a pure wood mold, and has the following shortcomings: the initial support surface shape deviation leads to low template assembly efficiency, and the non-standard cutting processing causes a sharp increase in material loss; the labor-intensive reinforcement operation forms an efficiency bottleneck, the labor cost is high, the core waterproof component is displaced due to the pouring impact caused by the positioning deviation, and the joint waterproof efficiency is attenuated.

[0004] In summary, the existing technology has many deficiencies in tunnel construction, and an end template device for tunnel lining is needed to solve these problems to ensure the smooth progress of construction and improve the construction quality and waterproof effect. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the deficiencies in the prior art and provides an end template device for tunnel lining.

[0006] The end template device for tunnel lining comprises a water stop belt, an end template steel part and a trolley side rib, the water stop belt is arranged along the radial direction of the tunnel section, the end template steel part is arranged on the upper and lower sides of the water stop belt, the trolley side rib is arranged at the bottom of the end template steel part, the opposite surfaces of the end template steel part and the trolley side rib are provided with water stop belt reserved grooves, a trolley steel mold is fixedly installed on the lower side of the trolley side rib through a steel mold fixing bolt, the end template steel part is connected with a connecting rod through a connecting rod fixing bolt, the trolley side rib and the connecting rod are fixedly connected through a connecting rod fixing bolt, the end template steel part and the trolley side rib are connected as a whole through the connecting rod and the connecting rod fixing bolt, a hook-shaped bolt connecting ear plate is arranged at the tail part of the trolley side rib, and the two are connected through a fixing bolt.

[0007] Preferably, wood mold fixing steel bars are arranged between the connecting rods.

[0008] Preferably, an end template wooden part is arranged between the wood mold fixing steel bars and the end template steel part.

[0009] As preferred, the end template steel part is connected with an L-shaped end plate, and the other end of the L-shaped end plate is connected to the bottom of the trolley side rib; the end template steel part, the L-shaped end plate and the trolley side rib are integrally connected to form an integral frame structure.

[0010] As preferred, a connecting plate is welded inside the hook-shaped bolted ear plate; the connecting plate is connected with an inner wire drawing rod through a fixing bolt.

[0011] As preferred, a bolt wedge is arranged at the intersection of the trolley side rib and the inner wire drawing rod.

[0012] As preferred, the trolley steel mold and the trolley side rib are vertically arranged.

[0013] The beneficial effects of the utility model are:

[0014] 1) The utility model realizes rapid positioning and disassembly of the template, simplifies the construction process, reduces the labor cost, and significantly improves the efficiency by combining the L-shaped folding structure with the inner wire drawing rod.

[0015] 2) The utility model realizes half pre-buried and half stretched water stop through the steel mold bending area, facilitates clamping the water stop between the steel molds, can well solve the problems of asymmetric centering of the ring-shaped buried water stop and misalignment of the ring-shaped construction joint in the tunnel secondary lining construction process, overcomes many defects of the traditional wooden mold, can greatly improve the efficiency and waterproof effect of the waterproof treatment at the construction joint, and reduces the engineering cost.

[0016] 3) The utility model combines the steel mold and the wooden mold together to form a steel-wood combined end template, so that the end template is quickly, simply, stably and simply erected, can effectively reduce the construction cost and improve the construction efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is a front view of the tunnel lining steel-wood combined end template;

[0018] Fig. 2 is a rear view of the tunnel lining steel-wood combined end template;

[0019] Fig. 3 is a side view of the tunnel lining steel-wood combined end template;

[0020] Fig. 4 is a side view of the tunnel lining trolley L-shaped folding steel-wood combined end template;

[0021] Fig. 5 is a side view of the hook-shaped bolted ear plate;

[0022] Fig. 6 is a front view of the hook-shaped bolted ear plate.

[0023] Explanation of reference numerals in the attached drawings: steel part of end template (1), wooden part of end template (2), steel mold of trolley (3), side rib of trolley (4), waterstop (5), reserved groove of waterstop (6), connecting rod (7), connecting rod fixing bolt (8), wooden mold fixing steel bar (9), steel mold fixing bolt (10), hook-shaped bolted ear plate (11), bolt wedge (11-1), internal pull rod (11-2), connecting plate (11-3), fixing bolt (11-4), L-shaped end plate (12). Detailed Implementation

[0024] The present invention will be further described below with reference to embodiments. The description of the embodiments below is only for the purpose of helping to understand the present invention. It should be noted that, for those skilled in the art, several modifications can be made to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0025] As one embodiment, a tunnel lining end formwork device is proposed, such as... Figs. 1 to 6 As shown, it includes a waterstop 5, an end template steel part 1, and a trolley side rib 4. The waterstop 5 is arranged radially along the tunnel cross section. The end template steel part 1 is located on the upper and lower sides of the waterstop 5. The trolley side rib 4 is located at the bottom of the end template steel part 1. A waterstop reserved groove 6 is provided between the end template steel part 1 and the trolley side rib 4. The trolley steel mold 3 is fixedly installed on the lower side of the trolley side rib 4 by steel mold fixing bolts 10. The end template steel part 1 is connected to a connecting rod 7 by connecting rod fixing bolts 8. The trolley side rib 4 is connected to a connecting rod fixing bolt 8. The end template steel part 1 and the trolley side rib 4 are connected as a whole by connecting rods 7 and connecting rod fixing bolts 8. The tail of the trolley side rib 4 is connected to the hook-shaped bolted ear plate 11 by fixing bolts 11-4.

[0026] like Figs. 3 to 6 As shown, a wooden formwork fixing steel bar 9 runs through the connecting rods 7. A wooden part 2 of the end template is inserted between the wooden formwork fixing steel bar 9 and the steel part 1 of the end template. An L-shaped end plate 12 is connected to the steel part 1 of the end template. The other end of the L-shaped end plate 12 is connected to the bottom of the trolley side rib 4. The steel part 1 of the end template, the L-shaped end plate 12 and the trolley side rib 4 are integrally formed to form an integral frame structure. Concrete is poured into the integral frame structure. One side of the waterstop 5 is embedded in the concrete, and the other side is exposed outside the bending area. A connecting plate 11-3 is welded to the inner side of the hook-shaped bolt ear plate 11. The connecting plate 11-3 is connected to the inner pull rod 11-2 by the fixing bolt 11-4. A bolt wedge 11-1 is provided at the intersection of the trolley side rib 4 and the inner pull rod 11-2. The trolley steel formwork 3 and the trolley side rib 4 are arranged vertically.

[0027] The wooden part 2 of the end template is made of spliced ​​strips, which is highly adjustable and can adapt to uneven base surfaces of the surrounding rock. Its height can also be adjusted according to the different lining thicknesses.

[0028] By setting a waterstop groove 6 between the steel part 1 of the end template and the side rib 4 of the trolley, it is easy to install the waterstop 5 in it. This can effectively solve the problems of asymmetrical centering of the circumferential waterstop 5 and misalignment of the circumferential construction joint during the construction of the tunnel secondary lining. At the same time, it overcomes many defects of using traditional wooden formwork, which can greatly improve the efficiency and waterproofing effect of waterproofing treatment at the construction joint and reduce the project cost.

[0029] By combining the steel part 1 and the wooden part 2 of the end template to form a steel-wood composite end template, the end template can be erected quickly, simply, stably, and easily, effectively reducing construction costs and improving construction efficiency.

[0030] The L-shaped end plate 1 and the wooden formwork fixing steel bars 9 can effectively provide stable support for the wooden part 2 of the end formwork, and prevent the wooden part 2 of the end formwork from tilting due to the impact of concrete during the tunnel secondary lining construction, thus effectively improving the construction quality of the tunnel secondary lining.

[0031] The construction method for this tunnel lining end formwork device includes the following steps:

[0032] Step 1: Before the secondary lining is poured, first connect the trolley side rib 4 of the steel-wood combined end formwork to the trolley steel mold 3 with the steel mold fixing bolts 10. Then install the waterstop 5, install the steel part of the end formwork 1, and connect the L-shaped end plate 12, the steel part of the end formwork 1 and the trolley side rib 4 into a whole by connecting rod 7, and ensure that there are no gaps at the reserved groove of the waterstop 5.

[0033] Step 2: Insert the wooden part 2 of the end formwork into the wooden mold to fix the reinforcing steel 9, completing the concealed transfer work of one unit. Proceed step by step to complete the installation of the end formwork for the entire section, and pump concrete to complete the pouring work.

[0034] Step 3: After the secondary lining concrete reaches the design requirements, remove the wooden part 2 of the end formwork, remove the connecting rod 7 and the steel part 1 of the end formwork, so that the waterstop 3 is separated from the end formwork, and proceed to the next cycle of concrete pouring.

Claims

1. A tunnel lining end formwork apparatus characterised in that, The utility model relates to a tunnel end head template structure, including: Water stop, end template steel part and trolley side rib; Water stop is arranged along the tunnel section radial; end template steel part is arranged on the upper and lower sides of water stop; trolley side rib is arranged at the bottom of end template steel part; the opposite surface of end template steel part and trolley side rib is equipped with water stop reserved groove; trolley steel mould is fixedly installed to the lower side of trolley side rib through steel mould fixing bolt; end template steel part is connected with connecting rod through connecting rod fixing bolt, and trolley side rib and connecting rod are fixedly connected through connecting rod fixing bolt; end template steel part and trolley side rib are connected as a whole through connecting rod and connecting rod fixing bolt; the tail of trolley side rib is equipped with hook type bolt ear plate, and both are connected through fixing bolt.

2. The tunnel lining headform template apparatus of claim 1, wherein, Wooden mould fixing steel bar is arranged between connecting rods.

3. A tunnel lining end template apparatus according to claim 1 or claim 2, characterised in that, End template wooden part is inserted between wooden mould fixing steel bar and end template steel part.

4. The tunnel lining headform template apparatus of claim 1, wherein, L-shaped end plate is connected to the bottom of trolley side rib at the other end of L-shaped end plate connected to end template steel part; end template steel part, L-shaped end plate and trolley side rib are integrally connected to form integral frame structure.

5. The tunnel lining headform template apparatus of claim 1, wherein, Connecting plate is welded to the inner side of hook type bolt ear plate; inner wire drawing rod is connected to connecting plate through fixing bolt.

6. A tunnel lining end template apparatus as claimed in claim 1 or claim 5, characterised in that, Screw wedge is arranged at the intersection of trolley side rib and inner wire drawing rod.

7. The tunnel lining headform template apparatus of claim 1, wherein, Trolley steel mould and trolley side rib are arranged vertically.

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