Tunnel structure local thin-wall assembly type reinforcing structure manufacturing mold and preparation method

Abstract

The invention provides a tunnel structure local thin-wall assembly type reinforced structure manufacturing mold and a preparation method, the tunnel structure local thin-wall assembly type reinforced structure manufacturing mold comprises a bottom mold, a mold frame is detachably arranged on the bottom mold, the bottom mold and the mold frame form a pouring cavity, a boss is arranged on the inner side of the mold frame, and a thinning groove is formed in the other side corresponding to the boss; the two ends of the thinning groove are provided with partition assemblies, the pouring cavity is divided into three segments through the partition assemblies, the bottom die is further detachably provided with a blocking die, and the thinning groove is shielded through the blocking die. The duct piece prepared through the mold and the preparation method thereof can be locally thinned while the duct piece has the same pressure bearing effect, so that the field applicability of the duct piece is improved on the premise that the bearing stress is not reduced. And compared with conventional cast-in-place concrete, the site construction period is greatly shortened through the prefabricated duct pieces.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel construction, and particularly relates to a manufacturing mold and preparation method for a locally thin-walled assembled reinforcement structure of a tunnel structure. Background Art

[0002] As an important part of the transportation system, tunnels play an important role in connecting two regions, facilitating traffic, and promoting economic development. With the continuous increase in traffic flow, the functional requirements for tunnels are also getting higher and higher, and tunnels must maintain good operating conditions to meet the growing traffic demand. During the long-term use of tunnels, they will be affected by natural conditions such as geological structures, hydrological conditions, groundwater levels, and ground settlements, resulting in problems such as aging, diseases, cracks, and deformations in the tunnel structure. With the increase in traffic flow, the load of passing vehicles is also continuously increasing, making the original design bearing capacity of the tunnel may no longer meet the current traffic demand, and there is an overload risk.

[0003] The assembled lining structure has been widely applied and verified in shield tunnels. Its advantages such as fast treatment time, good effect, less operation interference, and low manpower requirements are obvious. Moreover, the assembled structure is prefabricated in the factory, and its quality accuracy also has high reliability, and it will surely become an important method for treating highway tunnel diseases.

[0004] Most of the segments used in the current splicing lining structure are conventional segments with the same thickness. However, in some scenarios, it is necessary to thin the local part of the segment. However, the bearing capacity of the thinned segment does not meet the standard, and its pressure-bearing effect has decreased. In view of this, a manufacturing mold and preparation method for a locally thin-walled assembled reinforcement structure of a tunnel structure are proposed to solve the above technical problems. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the present invention proposes a manufacturing mold and preparation method for a locally thin-walled assembled reinforcement structure of a tunnel structure to solve the current local technical problems proposed in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solutions. A manufacturing mold for a locally thin-walled assembled reinforcement structure of a tunnel structure includes:

[0007] A bottom mold;

[0008] A mold frame, detachably arranged on the bottom mold to form a pouring cavity. A boss is arranged inside the mold frame, and a thinning groove is opened on the other side corresponding to the boss;

[0009] A separating component, arranged at both ends of the thinning groove to divide the pouring cavity into three sections; and

[0010] A blocking mold is detachably arranged on the bottom mold to cover the thinning groove.

[0011] In a preferred embodiment, the mold frame includes:

[0012] A first side mold is vertically arranged on the bottom mold, and the boss is arranged on one side of the first side mold;

[0013] The second side molds are provided in two groups and are arranged at intervals on one side of the first side mold, and the ends of the two groups of the second side molds are separated to form the thinning groove;

[0014] Two groups of end molds are provided and fixedly arranged at both ends of the first side molds and respectively connected to two groups of the second side molds to seal both ends of the casting cavity; and

[0015] The tripods are provided in multiple groups and are arranged at intervals on the bottom mold and are connected to the side surfaces of the first side mold and the second side mold.

[0016] In a preferred embodiment, the base mold is provided with positioning holes and bolt holes, the first side mold and the second side mold are pre-fixed on the base mold by means of sharp nails cooperating with the positioning holes, and the first side mold, the second side mold and the end mold are fixed to the base mold by bolts cooperating with the bolt holes.

[0017] In a preferred embodiment, the partition assembly includes two groups of closing partitions, which are respectively fixed to the ends of the two groups of the second side molds facing the thinning groove by bolts and are sealed with the first side molds. A plurality of groups of steel bar grooves are longitudinally spaced apart on the closing partitions.

[0018] In a preferred embodiment, an angle is formed between the closing partition and the end of the second side mold, and a clamping block is provided in the angle.

[0019] In a preferred embodiment, a groove is provided on the closing partition, and the groove is located on the side away from the thinning groove.

[0020] In a preferred embodiment, a silicone mold is further provided inside the mold frame, and concave surfaces and convex surfaces are arranged at intervals.

[0021] A method for preparing a mold for manufacturing a local thin-walled assembled reinforcement structure of a tunnel structure, using a mold for manufacturing a local thin-walled assembled reinforcement structure of a tunnel structure, comprising the following steps:

[0022] The bottom mold is fixed horizontally, and the first side mold, the second side mold and the end mold are assembled to form a mold frame;

[0023] Fix two groups of closing partition plates at both ends of two groups of second side molds respectively by bolts, and make the closing partition plates abut against the first side mold. Then, embed the clamping blocks into the included angle formed by the closing partition plates and the second side molds;

[0024] Bind steel bars according to the design drawings to form a steel cage, and place the steel cage into the casting cavity;

[0025] Install embedded parts in the mold frame, pour C60 concrete into the casting cavity on one side of the two groups of second side molds, and vibrate the C60 concrete;

[0026] After the C60 concrete is cured for the predetermined time, remove the closing partition plates and install the plugging mold to cover the thinning groove;

[0027] Then pour UHPC concrete into the thinning groove and vibrate the UHPC concrete;

[0028] After the UHPC concrete is cured for the predetermined time, perform demolding treatment and hoist and store the segment.

[0029] In a preferred embodiment, the specific arrangement for assembling the first side mold, the second side mold and the end mold is as follows: first place the first side mold and the second side mold vertically on the bottom mold, position the first side mold and the second side mold through the cooperation of spikes and positioning holes, then fix the positions of the first side mold and the second side mold through the cooperation of bolts and bolt holes, then fix the tripod on the bottom mold by bolts and make the tripod connect with the outer sides of the first side mold and the second side mold, and finally install the end mold.

[0030] In a preferred embodiment, after removing the closing partition plates, roughen the end face of the C60 concrete.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] By fixing the mold frame on the bottom mold, then installing the partition assembly and arranging the embedded parts and the steel cage, and then pouring UHPC concrete into the space formed by the partition assembly and both ends of the mold frame. After the UHPC concrete is cured to reach the predetermined time and the predetermined hardness, remove the partition assembly, install the plugging mold, and then pour C60 concrete into the locally thinned position until the C60 concrete is formed, forming a locally thinned segment with the UHPC concrete. It can perform local thinning while the segment has the same pressure-bearing effect, so as to improve the on-site applicability of the segment without reducing the bearing force. And compared with conventional cast-in-place concrete, the precast segment greatly shortens the on-site construction period.

[0033] A steel bar groove is opened on the closing partition to provide space for placing the steel bar cage. A clamping block is embedded into the angle between the closing partition and the second side mold to improve the firmness during the installation of the closing partition, so that the closing partition can form a seal with the second side mold. At the same time, after the clamping block is disassembled, the existence of the angle makes the disassembly of the closing partition more convenient and fast, so as to improve the production efficiency. At the same time, a groove is opened on the closing partition to increase the contact surface between the UHPC concrete and the C60 concrete, so as to improve the bonding strength of the contact surface between the UHPC concrete and the C60 concrete. At the same time, by arranging a silicone mold on the inner side of the mold, the surface of the segment can be prevented from being smooth, the contact area between the two structural interfaces can be increased, and then the bonding ability between the segment and the tunnel can be improved, so as to achieve the effect of improving the bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific embodiments of the present invention, the drawings required for the specific embodiments will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0035] Figure 1 The top view of a manufacturing mold for a locally thin-walled prefabricated reinforcement structure of a tunnel structure provided by the present invention;

[0036] Figure 2 The structural schematic diagram of the bottom mold in a manufacturing mold for a locally thin-walled prefabricated reinforcement structure of a tunnel structure of the present invention;

[0037] Figure 3 The connection structural schematic diagram of the first side mold and the second side mold in a manufacturing mold for a locally thin-walled prefabricated reinforcement structure of a tunnel structure of the present invention;

[0038] Figure 4 For Figure 3 The enlarged schematic diagram of area A in

[0039] Figure 5 The side view of the side mold in a manufacturing mold for a locally thin-walled prefabricated reinforcement structure of a tunnel structure of the present invention;

[0040] Figure 6 The structural schematic diagram of the tripod in a manufacturing mold for a locally thin-walled prefabricated reinforcement structure of a tunnel structure of the present invention;

[0041] Figure 7 The structural schematic diagram of the silicone mold in a manufacturing mold for a locally thin-walled prefabricated reinforcement structure of a tunnel structure of the present invention;

[0042] Figure 8 The structural schematic diagram of the closing partition in a manufacturing mold for a locally thin-walled prefabricated reinforcement structure of a tunnel structure of the present invention.

[0043] Figure 9Schematic diagram of the segment in the manufacturing mold of the local thin-wall assembled reinforcement structure for a tunnel structure according to the present invention;

[0044] Figure 10 Schematic diagram of an embodiment of the splicing structure of multiple wide segments and narrow segments in the manufacturing mold of the local thin-wall assembled reinforcement structure for a tunnel structure according to the present invention;

[0045] Figure 11 Schematic diagram of the connection structure between the reinforced segment and the ground beam in the manufacturing mold of the local thin-wall assembled reinforcement structure for a tunnel structure according to the present invention.

[0046] Reference numerals:

[0047] 1, bottom mold; 2, positioning hole; 3, bolt hole; 4, first side mold; 5, convex platform; 6, second side mold; 7, end mold; 8, silicone mold; 81, concave surface; 82, convex surface; 9, closing partition; 10, clamping block; 11, steel bar groove; 12, groove; 13, tripod; 14, lug; 15, card slot; 16, plugging mold; 100, reinforced segment; 204, bottom support hole; 300, ground beam. Detailed implementation manners

[0048] The present invention will be further described in detail below with reference to the drawings. It is necessary to point out here that the following specific implementation manners are only used to further illustrate the present invention and cannot be construed as limiting the protection scope of the present invention. Those skilled in the art can make some non-essential improvements and adjustments to the present invention according to the above application content.

[0049] Embodiment:

[0050] As Figures 1 to 3 , Figure 6 shown, the present invention provides a manufacturing mold for a local thin-wall assembled reinforcement structure of a tunnel structure, including a bottom mold 1. A detachable mold frame is arranged on the bottom mold 1. The mold frame and the bottom mold 1 form a pouring cavity. A convex platform 5 is arranged inside the mold frame, and a thinning groove is formed on the other side corresponding to the convex platform 5. The mold frame includes a first side mold 4 vertically arranged on the bottom mold 1 and two groups of second side molds 6. The convex platform 5 is arranged on one side of the first side mold 4. The two groups of second side molds 6 are arranged at intervals on one side of the first side mold 4. The ends of the two groups of second side molds 6 are separated to form a thinning groove. End molds 7 are arranged at both ends of the first side mold 4. The two groups of end molds 7 are respectively connected to the two groups of second side molds 6 to seal both ends of the pouring cavity. Multiple groups of tripods 13 are arranged at intervals on the bottom mold 1. The tripods 13 are connected to the sides of the first side mold 4 and the second side mold 6. A plugging mold 16 is detachably arranged on the bottom mold 1. The thinning groove is blocked by the plugging mold 16.

[0051] When the mold is in use, the mold frame is assembled first. During assembly, the first side mold 4 and two groups of second side molds 6 are arranged vertically on the bottom mold 1. The bottom mold 1 is provided with positioning holes 2 and bolt holes 3. The first side mold 4 and the second side mold 6 are pre-fixed on the bottom mold 1 by the cooperation of spikes and positioning holes 2. The first side mold 4, the second side mold 6 and the end mold 7 are fixed to the bottom mold 1 by bolts and bolt holes 3. Then the end mold 7 is installed to complete the assembly of the mold frame. Finally, the tripod 13 is installed to support the first side mold 4 and the second side mold 6. At the same time, its position can be fine-tuned to ensure that the mold is absolutely stable during the casting operation, thereby ensuring that the casting quality meets the design requirements.

[0052] In some embodiments, the first side mold 4 and the second side mold 6 are both multi-segment splicing types. When preparing ordinary pipe segments, the boss 5 can be replaced with a regular segment of the first side mold 4, and the opening of the thinning groove can be sealed by the sealing mold 16 to cast and form pipe segments with uniform thickness.

[0053] In addition, if Figure 5 As shown, it can be understood that, in some embodiments, a plurality of groups of ear pieces 14 are spaced apart at the top of the first side mold 4, the second side mold 6 and the end mold 7, and a slot 15 is provided on one side of the ear piece 14, and the first side mold 4, the second side mold 6 and the end mold 7 can be hoisted by using the ear pieces 14 to lift the ear pieces 14, and bolts can also be inserted into the two groups of slots 15 arranged opposite to each other, and the positions of the first side mold 4 and the second side mold 6 can be limited by adjusting the distance between the screw head and the nut.

[0054] like Figure 3 , 4 As shown in Figures 8 and 9, in this embodiment, a partition assembly is provided at both ends of the thinning groove, and the casting cavity is divided into three groups of segments by the partition assembly. The partition assembly includes two groups of closing partitions 9, which are respectively fixed to the ends of the two groups of second side molds 6 facing the thinning groove by bolts, and are sealed and connected to the first side mold 4. A plurality of groups of steel bar grooves 11 are longitudinally spaced apart on the closing partition 9. There is an angle between the closing partition 9 and the end of the second side mold 6, and a clamping block 10 is provided in the angle. A groove 12 is provided on the closing partition 9, and the groove 12 is located on the side away from the thinning groove.

[0055] By arranging the closing partition plate 9, the casting cavities corresponding to the two groups of second side molds 6 can form independent spaces, enabling the casting of C60 concrete. After fixing the closing partition plate 9 with bolts, the block 10 is embedded into the angle formed between the closing partition plate 9 and the end of the second side mold 6 to prevent the closing partition plate 9 from shifting and tilting due to the self-weight of the C60 concrete. At the same time, after the C60 concrete is cured for a predetermined time, the block 10 can be disassembled, and the existence of the angle makes the demolding of the closing partition plate 9 more convenient. Then, the plugging mold 16 is installed at the opening of the thinning groove, and then UPHC concrete (ultra-high performance concrete) is cast. In addition, by providing the groove 12, the contact surface between the C60-cast concrete and the UPHC concrete can be increased, improving the stability of the overall structure of the segment. In addition, in some embodiments, the C60 concrete segment can also be precast separately, and then the precast C60 concrete segment is placed into the mold frame, and then the UPHC concrete segment is cast.

[0056] As Figure 3 , 7 shown, in this embodiment, a silica gel mold 8 is further provided inside the mold frame. Concave surfaces 81 and convex surfaces 82 are arranged at intervals and in a scattered manner on the silica gel mold 8. By providing the silica gel mold 8, the side surface of the segment forms an irregular surface, avoiding the smoothness of the side surface of the segment, increasing the contact area between the two structural interfaces, and thus improving the interface bonding ability and the bearing capacity. In some preferred embodiments, fixing bolt holes can be reserved inside the mold, which are not only used to firmly install the silica gel mold 8 but also facilitate the adaptation of customized templates for various special rough interfaces. The silica gel mold 8, as a consumable, is designed in a way that is separated from the steel end mold. This separated design not only ensures the flexible replaceability of the silica gel mold 8 but also greatly improves the overall adaptability and durability of the mold system.

[0057] A preparation method of a manufacturing mold for a locally thin-walled prefabricated reinforcement structure of a tunnel structure, using a manufacturing mold for a locally thin-walled prefabricated reinforcement structure of a tunnel structure, includes the following steps:

[0058] Horizontally fix the bottom mold 1, and assemble the first side mold 4, the second side mold 6, and the end mold 7 to form a mold frame, and fixedly bond the silica gel mold 8 inside the mold frame. The specific arrangement for assembling the first side mold 4, the second side mold 6, and the end mold 7 is as follows: First, vertically place the first side mold 4 and the second side mold 6 on the bottom mold 1, and position the first side mold 4 and the second side mold 6 through the cooperation of spikes and positioning holes 2, then fix the positions of the first side mold 4 and the second side mold 6 through the cooperation of bolts and bolt holes 3. Then, fix the tripod 13 on the bottom mold 1 with bolts, and connect the tripod 13 to the outer side surfaces of the first side mold 4 and the second side mold 6. Finally, install the end mold 7.

[0059] Fix two sets of closing partition plates 9 at both ends of two sets of second side molds 6 respectively by bolts, and make the closing partition plates 9 abut against the first side mold 4. Then, embed the clamping blocks 10 into the included angle formed by the closing partition plates 9 and the second side molds 6. Bind steel bars according to the design drawings to form a steel reinforcement cage, and place the steel reinforcement cage into the steel bar groove 11 in the casting cavity to provide space for the placement of the steel reinforcement cage;

[0060] Install embedded parts in the mold frame, and pour C60 concrete into the casting cavity on one side of two sets of second side molds 6, and vibrate the C60 concrete. The embedded parts can be nuts, anchor rings, lifting rings, etc. The embedding of the embedded parts is a common technical means in this field and will not be elaborated here.

[0061] After the C60 concrete is cured for the predetermined time, remove the closing partition plates 9. After removing the closing partition plates 9, roughen the end face of the C60 concrete. And install the plugging mold 16 to cover the thinning groove, then pour UHPC concrete into the thinning groove and vibrate the UHPC concrete. Among them, vibrators can be installed on the first side mold 4, the second side mold 6 and the bottom mold 1 to quickly achieve vibration.

[0062] After the UHPC concrete is cured for the predetermined time, perform demolding treatment and hoist and store the segment. Among them, the predetermined curing time after the C60 concrete is poured is 2 - 3 days. After the C60 concrete segment is basically formed, pour the UHPC concrete, and then cure the UHPC concrete and the C60 concrete as a whole for 28 days.

[0063] In addition, it can be understood that in some preferred embodiments, special-shaped blocks can be added at both ends of the inner side of the mold to cast a special-shaped joint. The special-shaped joint assembly system includes joint modules of various shapes, and can be selected and assembled into the required joint form according to actual needs. As Figures 9 - 10 shown, in specific implementation, the reinforced segment 100 can be set as two widths of reinforced segments 100, one is the wide reinforced segment A ( Figure 9 a), and the other is the narrow reinforced segment B ( Figure 9 b), and make the width of the wide reinforced segment twice that of the narrow reinforced segment. Along the length direction of the tunnel, use transverse staggered joint assembly to form Figure 10 the shown joint seams. The basic form is B, A, A, (A is an even number of segments) B, that is, the segments on both sides of the assembled structure are rotationally symmetric. During the assembly process, half of the upper ring segment can be used as the support point for the next segment, so that each segment except the first segment can form a load-bearing ring after installation, ensuring the structural stability.

[0064] As Figure 11As shown, in some preferred embodiments, the bottom support holes 204 of the segment are specific holes reserved at the bottom of the precast concrete segment. Their core purpose is to install supports, thereby providing stable support for the segment. During the tunnel reinforcement process, after the reinforced segments 100 are assembled ring by ring, the ground beams 300 are firmly connected to the reinforced segments 100 through these reserved holes, and the vertical loads (including self-weight, overburden pressure above, and operating loads such as trains) borne by the reinforced segments 100 are safely and efficiently transferred to the underlying ground beams 300, such as to the cushion, pedestal, or roadbed at the bottom of the tunnel, so as to ensure the vertical stability of the tunnel structure and prevent adverse conditions such as settlement and displacement of the reinforced segments 100.

[0065] The connection of the bottom supports is as follows. Each group of bottom support holes 204 consists of two holes, which are respectively used to connect the original lining structure and the lower support. Generally, at least two groups of support holes are provided for the reinforced segment 100 to maintain structural stability. To ensure uniform stress, the single distance of each group of support holes is not greater than 0.6 m. For the convenience of construction and to prevent the bolts from being unable to turn in or out smoothly after the supports are slightly deformed, the support holes are designed with non-full threads. To reduce costs, the lower nuts and upper steel pipes are welded together.

[0066] In the project, to ensure that the embedded parts of the bottom support holes 204 form a load-bearing whole with the concrete structure, a connecting steel plate can be set at the lower part of the bottom support holes 204. The plate thickness is 3 - 5 mm. The single distance of the two anchoring holes 203 should be 5 - 10 cm, neither too large nor too small. If it is too large, the steel plate will be too large, which is not conducive to construction control. If it is too small, it is not conducive to concrete pouring. Vertical anchoring steel bars are set on both sides of the steel plate, and the length is not less than 10 cm. Horizontal anchoring steel bars are set at the top of the embedded parts, and the length of the steel bars is not less than 30 cm.

[0067] The beneficial effects of the present invention:

[0068] By fixing the mold frame on the bottom mold 1, then installing the partition components and arranging the embedded parts and the steel reinforcement cage, and then pouring UHPC concrete into the space formed between the partition components and the two ends of the mold frame. After the UHPC concrete is cured to reach the predetermined time and predetermined hardness, the partition components are disassembled, and the plugging mold 16 is installed. Then, C60 concrete is poured into the locally thinned position until the C60 concrete is formed, forming a segment with local thinning together with the UHPC concrete. It is possible to perform local thinning while the segment has the same pressure-bearing effect, so as to improve the on-site applicability of the segment without reducing the load-bearing capacity. And compared with conventional cast-in-place concrete, the precast segment greatly shortens the on-site construction period.

[0069] A steel bar groove 11 is provided on the closing partition plate 9 to provide space for placing the steel reinforcement cage. By embedding a clamping block 10 into the angle between the closing partition plate 9 and the second side form 6, the firmness of the closing partition plate 9 during installation can be improved, so that the closing partition plate 9 can form a seal with the second side form 6. At the same time, after the clamping block 10 is disassembled, the existence of the angle makes the disassembly of the closing partition plate 9 more convenient and fast, so as to improve the production efficiency. At the same time, a groove 12 is provided on the closing partition plate 9 to increase the contact surface between the UHPC concrete and the C60 concrete, so as to improve the bonding strength of the contact surface between the UHPC concrete and the C60 concrete. At the same time, by arranging a silicone mold 8 on the inner side of the mold, the surface of the segment can be prevented from being smooth, the contact area between the two structural interfaces can be increased, and then the bonding ability between the segment and the tunnel can be improved, so as to achieve the effect of improving the bearing capacity.

[0070] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments. Based on the present invention, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of the present invention claimed.

Claims

1. A mold for manufacturing a local thin-walled assembled reinforcement structure of a tunnel structure, characterized in that: Included are: Bottom mold (1); A mold frame is detachably arranged on the bottom mold (1) to form a casting cavity, a boss (5) is arranged on the inner side of the mold frame, and a thinning groove is opened on the other side corresponding to the boss (5); A partition assembly is disposed at both ends of the thinning groove to divide the casting cavity into three groups of segments; and A blocking mold (16) is detachably arranged on the bottom mold (1) to cover the thinning groove.

2. A tunnel structure local thin-walled assembly reinforcement structure manufacturing mold according to claim 1, characterized in that: The mold frame includes: A first side mold (4) is vertically arranged on the bottom mold (1), and the boss (5) is arranged on one side of the first side mold (4); The second side molds (6) are provided in two groups and are arranged at intervals on one side of the first side mold (4), and the ends of the two groups of the second side molds (6) are separated to form the thinning groove; Two groups of end molds (7) are provided and fixedly arranged at the two ends of the first side mold (4) and respectively connected to the two groups of the second side molds (6) to seal the two ends of the casting cavity; and The tripods (13) are provided in multiple groups and are arranged at intervals on the bottom mold (1) and are connected to the side surfaces of the first side mold (4) and the second side mold (6).

3. A tunnel structure local thin-walled assembly reinforcement structure manufacturing mold according to claim 2, characterized in that: The bottom mold (1) is provided with a positioning hole (2) and a bolt hole (3).

4. A tunnel structure local thin-walled assembly reinforcement structure manufacturing mold according to claim 3, characterized in that: The partition assembly comprises two groups of closing partitions (9), which are respectively fixed to the ends of the two groups of the second side molds (6) facing the thinning grooves by bolts and are sealed to the first side molds (4). A plurality of groups of steel bar grooves (11) are longitudinally spaced apart on the closing partitions (9).

5. The mold for manufacturing a local thin-walled assembled reinforcement structure of a tunnel structure according to claim 4, characterized in that: An angle is formed between the closing partition plate (9) and the end of the second side mold (6), and a clamping block (10) is provided in the angle.

6. The mold for manufacturing a local thin-walled assembled reinforcement structure of a tunnel structure according to claim 4, characterized in that: The closing partition plate (9) is provided with a groove (12), and the groove (12) is located on the side away from the thinning groove.

7. The mold for manufacturing a local thin-walled assembled reinforcement structure of a tunnel structure according to claim 1, characterized in that: A silicone mold (8) is also provided inside the mold frame, and concave surfaces (81) and convex surfaces (82) are arranged at intervals on the silicone mold (8).

8. A method for preparing a mold for manufacturing a local thin-walled assembled reinforcement structure of a tunnel structure, using a mold for manufacturing a local thin-walled assembled reinforcement structure of a tunnel structure as claimed in any one of claims 1 to 7, comprising the following steps: The bottom mold (1) is fixed horizontally, and the first side mold (4), the second side mold (6) and the end mold (7) are assembled to form a mold frame, and a silicone mold (8) is fixed and bonded inside the mold frame; The two groups of closing baffles (9) are respectively fixed to the two ends of the two groups of second side molds (6) by bolts, and the closing baffles (9) are abutted against the first side mold (4), and then the clamping block (10) is embedded in the angle formed by the closing baffles (9) and the second side mold (6); Tie the steel bars according to the design drawings to form a steel cage, and place the steel cage into the casting cavity; Install embedded parts in the mold frame, pour C60 concrete into the casting cavity on one side of the two sets of second side molds (6), and vibrate the C60 concrete; After the C60 concrete has been cured for a predetermined time, the closing partition (9) is removed and a plugging mold (16) is installed to cover the thinning groove; Then pour the UHPC concrete into the thinning groove and vibrate the UHPC concrete; After the UHPC concrete has been cured for the predetermined time, it is demoulded and the segments are hoisted and stored.

9. The method for preparing a mold for manufacturing a local thin-walled assembled reinforcement structure of a tunnel structure according to claim 8, characterized in that: The specific arrangement of assembling the first side mold (4), the second side mold (6) and the end mold (7) is as follows: firstly, the first side mold (4) and the second side mold (6) are vertically placed on the bottom mold (1), and the first side mold (4) and the second side mold (6) are positioned by means of sharp nails cooperating with the positioning holes (2), and then the positions of the first side mold (4) and the second side mold (6) are fixed by means of bolts cooperating with the bolt holes (3), and then the tripod (13) is fixed on the bottom mold (1) by means of bolts, and the tripod (13) is connected to the outer side surfaces of the first side mold (4) and the second side mold (6), and finally the end mold (7) is installed.

10. The method for preparing a mold for manufacturing a local thin-walled assembled reinforcement structure of a tunnel structure according to claim 8, characterized in that: After the closing partition (9) is removed, the end surface of the C60 concrete is roughened.

Images