Fabricated track foundation of open cut tunnel lining trolley

Abstract

The utility model discloses an open cut tunnel lining trolley assembly type track foundation which comprises a plurality of concrete precast blocks, and the concrete precast blocks can be aligned and spliced end to end in the length direction to form the track foundation. The two end faces, in the length direction, of each concrete precast block are provided with mutually-matched insertion structures used for end-to-end insertion and alignment of the multiple concrete precast blocks. Connecting structures matched with each other are arranged on the two end faces, in the width direction, of each concrete precast block correspondingly and used for splicing and fixing the front-back adjacent concrete precast blocks, and a groove penetrating in the length direction of the concrete precast block is formed in the top of each concrete precast block and used for embedding of the bottom of a steel rail. The prefabricated track foundation is simple in structure, the prefabricated track foundation is achieved, when the steel rails are supported through the prefabricated track foundation and open cut tunnel lining construction is carried out, only concrete prefabricated blocks with the length two to three times that of the longitudinal length of a trolley need to be prefabricated, the repeated utilization rate is high, and resource waste is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of open cut tunnel lining jumbo, and particularly relates to an assembled track foundation for an open cut tunnel lining jumbo. Background Art

[0002] In the case of shallow tunnel burial depth and thin overlying rock mass, in order to avoid disasters such as collapse, rockfall, landslide, debris flow, etc. of slopes and inverted slopes, the traditional cut-and-cover method should not be used, and the open cut method should be used to excavate the tunnel. The tunnel structure constructed by this open cut method is usually called an open cut tunnel. The open cut tunnel has good integrity and can bear large vertical pressure and lateral pressure. The open cut tunnel lining jumbo is a product designed for lining the open cut tunnel.

[0003] At the present stage, the concrete construction of the open cut tunnel is carried out by using an internal and external formwork lining jumbo for lining. With the long-distance construction of the jumbo, the internal formwork jumbo stands on the inverted arch filling layer, and its foundation strength is sufficient. However, the track foundation for the external formwork jumbo to travel needs to be calculated as a temporary construction project in the whole construction process. But long-distance construction means that in the lining construction of each open cut tunnel arch, the construction of the jumbo track foundation needs to re-fabricate the steel reinforcement cage and re-mix the concrete, which consumes a great deal of human and material resources. The waste of resources is what we do not want to see. Therefore, how to reduce the cost of the jumbo track foundation as much as possible on the premise of ensuring safety has become an urgent problem we hope to solve. Content of the Utility Model

[0004] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide an assembled track foundation for an open cut tunnel lining jumbo.

[0005] To solve the above problems, the utility model adopts the following technical scheme:

[0006] An assembled track foundation for an open cut tunnel lining jumbo, comprising concrete precast blocks. A plurality of concrete precast blocks can be spliced end to end in the length direction to form a track foundation. Insertion structures that match each other are arranged on the two end faces in the length direction of the concrete precast block for end-to-end insertion and alignment between a plurality of concrete precast blocks. Connection structures that match each other are respectively arranged on the two end faces in the width direction of the concrete precast block for splicing and fixing between adjacent front and rear concrete precast blocks. A groove penetrating along its length direction is arranged at the top of the concrete precast block for the bottom of the rail to be embedded.

[0007] Preferably, a steel reinforcement cage is poured in the concrete precast block.

[0008] Preferably, the plug-in structure includes a plug rod and a jack. A plurality of plug rods extend along the length direction of the precast concrete block and protrude from the front end of the precast concrete block. A plurality of jacks are arranged at the rear end of the precast concrete block and extend along the length direction of the precast concrete block. The number, shape, and positions of the jacks and the plug rods distributed on the front and rear surfaces of the precast concrete block are the same.

[0009] Preferably, the orifice of the jack is set in the shape of a flared opening.

[0010] Preferably, the connection structure includes a connecting rod and a buckle. One end of the connecting rod is hinged to the front side of one end face in the width direction of the precast concrete block. The buckle is connected to the rear side of the end face of the precast concrete block where the connecting rod is connected. A clamping groove is formed at the other end of the connecting rod. When the connecting rod on one precast concrete block rotates around its hinge axis, its clamping groove can be clamped on the buckle of the adjacent precast concrete block on the front side of the precast concrete block it is connected to, so as to limit the movement of the adjacent precast concrete blocks in the length direction.

[0011] Preferably, there are four groups of the connection structures, which are respectively arranged in the upper half and the lower half of the two end faces in the width direction of the precast concrete block.

[0012] Preferably, pressing blocks are respectively arranged on both sides of the top groove of the precast concrete block. The side surface of the pressing block facing the groove fits the shape of the upper surface of the rail base of the rail. An installation hole penetrating the pressing block up and down is arranged on the pressing block. A bolt is movably connected in the installation hole. The bolt is threadedly connected to the precast concrete block. When the pressing block is connected to the top of the precast concrete block through the bolt, its side surface facing the groove is pressed against the upper surface of the rail base of the rail.

[0013] Preferably, the plug rod is pre-embedded and cast in the precast concrete block.

[0014] Preferably, a pin shaft is arranged on one end face in the width direction of the precast concrete block. One end of the connecting rod is rotatably connected to the pin shaft, and the pin shaft is pre-embedded and cast in the precast concrete block.

[0015] Preferably, lifting rings are respectively arranged at the four corners of the top surface of the precast concrete block.

[0016] The beneficial effects of the present utility model

[0017] Compared with the prior art, the advantages of the present utility model are as follows:

[0018] The structure of the present utility model is simple, realizing an assembled track foundation. The rail is supported by the assembled track foundation. During the construction of the open cut tunnel lining, only two to three times the longitudinal length of the trolley of precast concrete blocks need to be precast, with a high reuse rate and reduced waste of resources. Brief description of the drawings

[0019] Figure 1 is a schematic diagram of the use state of the present utility model;

[0020] Figure 2 , 3 is a schematic diagram of the structure of the present utility model;

[0021] Figure 4 is the front view of the present utility model;

[0022] Figure 5 is a schematic diagram of the disassembly of the parts of the present utility model;

[0023] Figure 6 is a schematic diagram of the structure of the steel bar framework of the present utility model. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper / lower end", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "set / sleeved with", "socketed", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] Please refer to Figure 1-6, the present utility model provides a technical solution: an assembled track foundation for a tunnel lining trolley, including concrete precast blocks 1. A number of concrete precast blocks 1 can be spliced end to end in the length direction to form a track foundation. Matching insertion structures are provided on the two end faces in the length direction of the concrete precast block 1 for end-to-end insertion and alignment between a number of concrete precast blocks 1. Matching connection structures are respectively provided on the two end faces in the width direction of the concrete precast block 1 for splicing and fixing between adjacent front and rear concrete precast blocks 1. A groove 2 penetrating along its length direction is provided on the top of the concrete precast block 1 for embedding the bottom of the rail.

[0028] During use, select the number of concrete precast blocks 1 according to the length of the rail, transport a number of concrete precast blocks 1 to the position where the track needs to be laid, make the front and rear ends of a number of concrete precast blocks 1 inserted and aligned through the insertion structure, then make the adjacent front and rear concrete precast blocks 1 spliced and fixed through the connection structure, and finally embed the rail into the groove 2 on the top of the concrete precast block 1 to complete the track laying. The structure of the present utility model is simple, realizing an assembled track foundation, supporting the rail through the assembled track foundation. During the tunnel lining construction, only need to precast concrete precast blocks 1 with a length of two to three times the longitudinal length of the trolley, with a high reuse rate and reduced resource waste.

[0029] Specifically during use, the shortest length of the rail to be laid is only twice the longitudinal length of the trolley. One half is laid at the position where the tunnel lining construction is in progress, and the other half is reserved for the position of the next form of tunnel lining construction. After one form of tunnel lining is completed, move the trolley to the position of the next form of tunnel lining construction, lift the trolley, push the rail forward, and then transport the concrete precast block 1 at the rear end of the trolley to the position of the next next form of tunnel lining construction to support the rail, greatly saving human and material resources.

[0030] Furthermore, as Figure 6 shown, a steel bar framework 11 is cast in the concrete precast block 1 to ensure the strength of the concrete precast block 1.

[0031] Furthermore, the insertion structure includes insertion rods 31 and insertion holes 32. A number of insertion rods 31 extend along the length direction of the concrete precast block 1 and protrude from the front end of the concrete precast block 1. A number of insertion holes 32 are provided at the rear end of the concrete precast block 1 and extend along the length direction of the concrete precast block 1. The number, shape, and positions of the insertion holes 32 and the insertion rods 31 distributed on the front and rear surfaces of the concrete precast block 1 are the same. During use, insert the concrete precast blocks 1 in pairs front and rear to achieve end-to-end insertion and alignment between a number of concrete precast blocks 1.

[0032] Furthermore, as Figure 3As shown, the orifice of the jack 32 is provided with a flared shape 33, so as to facilitate the insertion rod 3 to be inserted into the jack 32.

[0033] Furthermore, the connection structure includes a latching rod 41 and a buckle 42. One end of the latching rod 41 is hinged to the front side of one end face in the width direction of the concrete precast block 1. The buckle 42 is connected to the rear side of the end face of the concrete precast block 1 where the latching rod 41 is connected. A clamping groove 43 is formed at the other end of the latching rod 41. When the latching rod 41 on one concrete precast block 1 rotates around its hinge axis, its clamping groove 43 can be clamped on the buckle 42 of the adjacent concrete precast block 1 on the front side of the concrete precast block 1 to which it is connected, so as to limit the movement of the front and rear adjacent concrete precast blocks 1 in the length direction. The structure in which the concrete precast blocks 1 of the present utility model are connected end to end through a plurality of insertion rods 31 and a plurality of jacks 32 has restricted the movement of the concrete precast blocks 1 in the height and width directions and the five degrees of freedom of rotation around the XYZ axes, realizing the end-to-end insertion and alignment of the concrete precast blocks 1. Then, by clamping the clamping groove 43 of the latching rod 41 on the buckle 42 of the adjacent concrete precast block 1 on the front side, the movement of the concrete precast blocks 1 in the length direction is restricted, thereby realizing the end-to-end insertion, alignment and fixation of the concrete precast blocks 1.

[0034] Furthermore, there are four groups of the connection structures, which are respectively arranged at the upper half and the lower half of the two end faces in the width direction of the concrete precast block 1, so as to ensure the firm connection of the four corners on the front and rear sides of the concrete precast block 1.

[0035] Furthermore, pressing blocks 5 are respectively arranged on both sides of the top groove 2 of the concrete precast block 1. The side surface of the pressing block 5 facing the groove 2 fits the shape of the upper surface of the rail bottom of the rail. An installation hole 51 penetrating through the pressing block 5 up and down is arranged on the pressing block 5. A bolt 52 is movably connected in the installation hole 51. The bolt 52 is threadedly connected to the concrete precast block 1. When the pressing block 5 is connected to the top of the concrete precast block 1 through the bolt 52, its side surface facing the groove 2 presses against the upper surface of the rail bottom, so as to fix the rail.

[0036] Furthermore, the insertion rod 31 is pre-embedded and cast in the concrete precast block 1, and the structure is more stable.

[0037] Furthermore, a pin shaft 411 is arranged on one end face in the width direction of the concrete precast block 1. One end of the latching rod 41 is rotatably connected to the pin shaft 411. The pin shaft 411 is pre-embedded and cast in the concrete precast block 1, so that the hinged position of the latching rod 41 and the concrete precast block 1 is firmly connected.

[0038] Furthermore, lifting rings 6 are respectively arranged at the four corners of the top surface of the concrete precast block 1, so as to facilitate the lifting and transportation of the concrete precast block 1.

[0039] It should be noted that, in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0040] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An open hole lining trolley assembled track foundation, characterized in that: The invention comprises a concrete prefabricated block (1), wherein a plurality of concrete prefabricated blocks (1) can be aligned end to end in the length direction and assembled to form a track foundation; mutually matching plug-in structures are arranged on both end surfaces in the length direction of the concrete prefabricated block (1) for plugging and aligning the plurality of concrete prefabricated blocks (1) end to end; mutually matching connecting structures are arranged on both end surfaces in the width direction of the concrete prefabricated block (1) for assembling and fixing the front and rear adjacent concrete prefabricated blocks (1); and a groove (2) is arranged on the top of the concrete prefabricated block (1) and penetrates along the length direction thereof for embedding the bottom of the rail.

2. The open hole lining trolley assembled track foundation according to claim 1, characterized in that: A steel skeleton (11) is cast inside the prefabricated concrete block (1).

3. The open hole lining trolley assembled track foundation according to claim 2, characterized in that: The plug-in structure comprises plug rods (31) and plug holes (32), wherein a plurality of plug rods (31) extend along the length direction of the precast concrete block (1) and protrude from the front end of the precast concrete block (1), and a plurality of plug holes (32) are arranged at the rear end of the precast concrete block (1) and extend along the length direction of the precast concrete block (1), and the plug holes (32) and the plug rods (31) are identical in number, shape, and position on the front and rear end surfaces of the precast concrete block (1).

4. The open hole lining trolley assembled track foundation according to claim 3 is characterized in that: The opening of the insertion hole (32) is configured in a bell-mouth shape (33).

5. The open hole lining trolley assembled track foundation according to claim 2, characterized in that: The connection structure comprises a lever (41) and a buckle (42); one end of the lever (41) is hinged to the front side of an end face of a concrete precast block (1) in a width direction; the buckle (42) is connected to the rear side of an end face of the concrete precast block (1) connected to the lever (41); the other end of the lever (41) is provided with a slot (43); the lever (41) on a concrete precast block (1) rotates around its hinge axis; its slot (43) can be locked on the buckle (42) of an adjacent concrete precast block (1) on the front side of the concrete precast block (1) to which it is connected, so as to limit the movement of the adjacent concrete precast blocks (1) in the length direction.

6. The open hole lining trolley assembled track foundation according to claim 5, characterized in that: There are four groups of connection structures, which are respectively arranged at the upper and lower parts of the two end surfaces in the width direction of the prefabricated concrete block (1).

7. The open hole lining trolley assembled track foundation according to claim 1, characterized in that: A pressing block (5) is provided on both sides of the groove (2) at the top of the concrete prefabricated block (1), and a side of the pressing block (5) facing the groove (2) is matched with the shape of the upper surface of the rail bottom of the steel rail. The pressing block (5) is provided with a mounting hole (51) that passes through the pressing block (5) from top to bottom. A bolt (52) is movably connected in the mounting hole (51), and the bolt (52) is threadedly connected to the concrete prefabricated block (1). When the pressing block (5) is connected to the top of the concrete prefabricated block (1) by the bolt (52), the side of the pressing block (5) facing the groove (2) is pressed against the upper surface of the rail bottom of the steel rail.

8. The open hole lining trolley assembled track foundation according to claim 3, characterized in that: The inserted rod (31) is pre-embedded and cast in the prefabricated concrete block (1).

9. The open hole lining trolley assembled track foundation according to claim 5, characterized in that: A pin shaft (411) is provided on one end surface in the width direction of the precast concrete block (1); one end of the lever (41) is rotatably connected to the pin shaft (411); and the pin shaft (411) is pre-embedded and cast in the precast concrete block (1).

10. The open hole lining trolley assembled track foundation according to claim 1, characterized in that: Four corners of the top surface of the prefabricated concrete block (1) are respectively provided with hanging rings (6).

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