Lining trolley set for tunnel construction comprising cross intersection and construction method

Abstract

The invention relates to a lining trolley set for tunnel construction comprising a cross intersection, the lining trolley set comprises four folding type lining trolleys, each folding type lining trolley comprises a formwork system used for forming a stable grouting space with a tunnel and a supporting walking system used for bearing and driving the formwork system to walk in the tunnel; according to the trolley set, the formwork systems of the four trolleys can be assembled into a complete formwork so as to be used for construction of crossroad tunnels, and the trolleys which are different in length and suitable for linear tunnels or linear overhaul tunnels can also be formed. And the use scene of the trolley is effectively widened. One-time concrete pouring can be achieved at the tunnel construction position of the cross intersection, construction cold joints are avoided, the waterproof performance is improved, and the overall pressure bearing capacity is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction equipment, in particular to a lining trolley group for tunnel construction including a cross intersection and a construction method. Background Art

[0002] During tunnel construction, the main line tunnel and the maintenance passages and entrances and exits on both sides intersect in the shape of a "cross". For tunnels with this structure, the existing construction plan adopts a full-span support combined with a wooden formwork and a cast-in-place method. The plan is a formwork support system composed of a full-span support + a steel frame + assembled small formwork. The full-span support adopts a 60-type buckle frame with a spacing of 60cm×60cm; the steel frame adopts I-18 I-steel, which is processed according to the designed curvature; the formwork adopts wooden formwork assembled piece by piece and pasted with bamboo plywood. The wooden formwork is 60mm thick and 1.5m long, and the bamboo plywood is 1.5cm thick; concrete pouring is done by a delivery pump into the mold, and the concrete is vibrated with an inserted vibrator.

[0003] The concrete pouring process of the support formwork scheme is prone to deformation of the support system or concrete leakage; the top cannot be fully poured with concrete, and voids are likely to appear after the formwork is removed; multiple delivery pumps cannot pump concrete at the same time, the concrete pouring time is long, and cold joints are likely to form, affecting the waterproof effect of the structure; the wooden formwork is spliced ​​many times, the concrete surface flatness is poor, and joints and misalignment are likely to occur. The quality of the concrete entity and appearance cannot meet the design requirements. The existing intersection lining support method construction scheme is mainly implemented manually, with a large number of operators, high technical requirements for workers, and high labor costs; the amount of materials such as steel frames, scaffolding, and assembled formwork is large, and the support erection speed is slow; the installation and operation space of the steel frame and formwork is small, the assembly speed of the steel frame formwork is slow, the overall construction time is long, the overall construction efficiency is low-cost, and the quality of the formwork and support erection is difficult to guarantee. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a lining trolley group for tunnel construction including a cross intersection, including four foldable lining trolleys, wherein the foldable lining trolleys include a template system for forming a stable grouting space between the tunnel and a supporting walking system for carrying and driving the template system to travel in the tunnel; The formwork system comprises a top formwork for grouting of the tunnel top wall lining and a side formwork for grouting of the tunnel side wall lining; The top formwork includes a straight top formwork for lining grouting of the top wall of the tunnel at a non-cross intersection and an intersection top formwork for lining grouting of the top wall of the tunnel at a cross intersection; The straight road top formwork is an arc-shaped formwork that is integrally matched with the arc-shaped top wall of the tunnel; the intersection top formwork is an arc-shaped formwork that is integrally matched with the arc-shaped top wall of the tunnel and has a joint angle formed at one end away from the straight road top formwork that is compatible with the intersection top forms of the other three foldable lining trolleys; The four intersection top forms of the four folding lining trolleys assembled together form an integral formwork for lining grouting of the tunnel top wall at the intersection.

[0005] On the basis of the above solution, the straight track top mold and the intersection top mold are connected in a detachable manner.

[0006] Based on the above scheme, a rotating component is arranged between the straight top mold and the intersection top mold, which is used to flip the intersection top mold downward around the end of the straight top mold, and any position of the intersection top mold after flipping does not exceed the vertical plane where the edge of the straight top mold 1-11 is located.

[0007] Based on the above scheme, the rotating assembly includes a fixed seat arranged near the end of the concave side of the straight top mold and a fixed plate fixed to the end of the concave side of the intersection top mold, and the other end of the fixed plate is rotatably connected to the fixed seat through a fixing pin.

[0008] On the basis of the above scheme, the concave side of the straight track top mold is provided with a slide groove for sliding of the fixed seat and a hydraulic pushing device for pushing the fixed seat to slide in the slide groove.

[0009] Based on the above scheme, the straight top mold includes a first straight top mold and a second straight top mold; the concave sides of the first straight top mold and the second straight top mold are both provided with a second flipping cylinder for flipping and folding the straight top mold during transportation.

[0010] On the basis of the above scheme, the intersection top mold includes a first intersection top mold and a second intersection top mold; a rotating component is arranged between the first intersection top mold and the first straight top mold and between the second intersection top mold and the second straight top mold.

[0011] On the basis of the above solution, a third turning cylinder for controlling the distance between the side form and the tunnel side wall is provided on the side form.

[0012] On the basis of the above scheme, the supporting walking system includes a gantry assembly for supporting the formwork system, a jacking system for adjusting the height of the trolley, and a walking system for driving the trolley to walk on the track laid in the tunnel; The portal assembly is provided with a supporting beam for supporting the formwork system, and the first straight top form and the second straight top form are respectively connected to the two ends of the supporting beam in a hinged manner; the two side forms are connected to the two ends of the supporting beam in a hinged manner.

[0013] The present application also provides a construction method for a tunnel including a cross intersection, using the above-mentioned lining trolley group.

[0014] The trolley group of the present application can use the template system of four trolleys to assemble into a complete template for the construction of cross-intersection tunnels, and can also be composed of trolleys of different lengths suitable for straight tunnels or straight maintenance tunnels. It effectively broadens the use scenarios of the trolleys. At the tunnel construction site of the cross-intersection, concrete can be poured in one time to avoid construction cold joints, increase waterproof performance, and improve overall pressure-bearing capacity; at the same time, it saves a lot of labor input, improves construction efficiency, reduces material use, and reduces construction costs.

[0015] The trolley group of the present application uses a trolley for flipping and recovering the top formwork and the side formwork. After the construction at a cross intersection is completed, the top formwork and the side formwork can be flipped and recovered respectively to increase the distance between the trolley and the tunnel wall, thereby realizing the direct transfer of the trolley located in the maintenance channel to the track in the main line of the tunnel.

[0016] In the trolley of the present application, a hydraulic pushing device is used in conjunction with a fixed seat and a slide groove in the straight top mold, so that the top mold at the intersection can be completely hidden under the lower part of the straight top mold after being flipped, so as to facilitate the assembly and transportation of the trolleys. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a three-dimensional structural diagram of the template system combination state of the trolley group in Example 1 of the present application; Figure 2 This is a schematic diagram of the structure of the template system of the trolley assembly in the unassembled state from a top view in Example 1 of the present application; Figure 3 This is a schematic diagram of the structure of the template system of the trolley in Example 1 of the present application; Figure 4 This is a schematic diagram of the structure of the template system assembly state of the trolley group in Example 1 of the present application from a top view; Figure 5 This is a schematic diagram of the grouting state of the trolley group in Example 1 of the present application; Figure 6 This is a schematic diagram of the structure of the top mold in Example 1 of the present application; Figure 7 for Figure 6 A schematic diagram of the enlarged structure of part A; Figure 8 1 is a state diagram of the top mold before and after flipping in Example 1 of the present application, wherein a is a state before flipping, b is a state after flipping, and c is another state after flipping; Fig. 9 This is a state diagram of the transport of the trolley group in Example 1 of the present application; Fig.10 This is a schematic diagram of the state of the trolley in the tunnel in Example 1 of the present application (unfolded state); Fig.11 This is a schematic diagram of the state of the trolley in the tunnel in Example 1 of the present application (folded state); DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] like Figure 1 , Fig. 9 and Fig.10 As shown, the present invention provides a lining trolley group for tunnel construction including a cross intersection, including four foldable lining trolleys, wherein the foldable lining trolleys include a template system 1 for forming a stable grouting space between the tunnel and a supporting walking system 2 for carrying and driving the template system 1 to walk in the tunnel; The formwork system 1 comprises a top formwork 1-1 for grouting of the tunnel top wall lining and a side formwork 1-2 for grouting of the tunnel side wall lining; The top mold 1-1 includes A straight top form 1-11 for lining grouting of a tunnel top wall at a non-cross intersection and an intersection top form 1-12 for lining grouting of a tunnel top wall at a cross intersection; The straight road top formwork 1-11 is an arc-shaped formwork that is integrally matched with the arc-shaped top wall of the tunnel (the center line of the straight road top formwork 1-11 corresponds to the center line of the tunnel); the intersection top formwork 1-12 is an arc-shaped formwork that is integrally matched with the arc-shaped top wall of the tunnel and is formed with a splicing angle at one end away from the straight road top formwork 1-11 that is compatible with the intersection top forms 1-12 of the other three foldable lining trolleys (the center line of the intersection top formwork 1-12 corresponds to the center line of the tunnel, and the splicing angle is located on the center line of the intersection top formwork 1-12); The four intersection top forms 1-12 of the four folding lining trolleys assembled together form a template for lining grouting of the tunnel top wall at the intersection.

[0021] like Figure 2 As shown, from a top-down perspective, the entire intersection top mold 1-12 is a right triangle, and the hypotenuse of the triangle is actually an arc-shaped side that matches the arc-shaped top wall of the tunnel. The side where this side is located is the side where the intersection top mold 1-12 is connected to the straight road top mold 1-11, and the right angle is located on the side away from the straight road top mold 1-11. The line between the vertex of the right angle and the two end points of the arc-shaped side is the two right-angled sides of the triangle.

[0022] When in use, place the four folding lining trolleys in Figure 1 After assembly, the intersection top forms 1-12 of the four folding lining trolleys are assembled into an integral template. Figure 2 From the perspective of FIG. 1 , the joint angle of each intersection top form 1-12 is 90° (right angle), which is a preferred angle. After being joined, the adjacent trolleys are fixed with bolts. In fact, the joint angle formed by the intersection top form 1-12 of each folding lining trolley can be different, as long as a complete template can be formed after being joined.

[0023] like Figure 4 As shown, the template system 1 of the four lining trolleys forms an integral template for tunnel construction at a crossroad after being assembled and spliced. Figure 5 As shown, four delivery pumps are used for simultaneous pouring. The concrete is poured from bottom to top. The concrete is poured near the top of the arch. During the pouring process, an attached high-frequency vibrator with an inserted vibrator is used for vibration.

[0024] If there are no other cross intersections to be constructed after the construction of one cross intersection, the intersection top formwork 1-12 can be directly dismantled (only the straight top formwork 1-11 is retained), and then the straight top formwork 1-11 of the four trolleys can be assembled into trolley groups of 12m (two trolleys), 18m (three trolleys) and 24m (four trolleys). This assembled straight top formwork can be used for lining construction of the main line tunnel, thereby expanding the application scenarios of the lining trolleys.

[0025] If the trolley group needs to be transferred to the next crossroad for construction after the construction of one crossroad, the crossroad top mold 1-12 can be turned down and then hidden under the straight road top mold 1-11. Figure 4As shown, the overall length of each trolley is 12m. After the intersection top form 1-12 is flipped down and retracted, the length of each trolley becomes 6m. This makes it easier to transfer the trolley group to the next intersection for construction. To this end, based on the above scheme, this application provides a specific implementation case of connecting the straight top form 1-11 and the intersection top form 1-12, such as Figure 6 As shown, a rotating component 1-13 is provided between the straight top mold 1-11 and the intersection top mold 1-12, so that the intersection top mold 1-12 can be flipped downward around the end of the straight top mold 1-11, and any position of the intersection top mold 1-12 after flipping does not exceed the vertical plane where the edge of the straight top mold 1-11 is located.

[0026] Specifically, Figure 7 As shown, the rotating assembly 1-13 includes a fixed seat 1-131 disposed on the concave side of the straight top mold 1-11 near the end and a fixed plate 1-132 fixed to the concave end of the intersection top mold 1-12, and the other end of the fixed plate 1-132 is rotatably connected to the fixed seat 1-131 through a fixed pin 1-133. The end in this paragraph refers to the end where the straight top mold 1-11 is connected to the intersection top mold 1-12.

[0027] Because the intersection top mold 1-12 is in an arc shape as a whole and has a large volume on the side close to the straight top mold 1-11, after flipping, it will exceed the vertical surface where the edge of the straight top mold 1-11 is located (such as Figure 8 b). In order to facilitate the flipping and ensure that the flipped intersection top mold 1-12 does not exceed the vertical plane where the edge of the straight road top mold 1-11 is located, based on the above technical solution, as shown in FIG. Figure 7 As shown, a slide groove 1-113 for sliding of the fixed seat 1-131 and a hydraulic pushing device 1-114 for pushing the fixed seat 1-131 to slide in the slide groove 1-113 are provided on the concave side wall of the straight top mold 1-11.

[0028] Specifically, the hydraulic pushing device may be an oil cylinder. When the intersection top mold 1-12 is ready to flip down, the hydraulic pushing device 1-114 is first used to push the fixing seat 1-131 in the horizontal direction, so that the intersection top mold 1-12 moves away from the straight top mold 1-11, and then the intersection top mold 1-12 is separated from the straight top mold 1-11; then the intersection top mold 1-12 is flipped down ( Figure 3 The direction of the arrow in the figure) is finally such that the entirety of the top mold 1-12 of the intersection after flipping and folding does not exceed the vertical surface where the edge of the top mold 1-11 of the straight road is located (such as Figure 8 If, after flipping, a portion of the top mold 1-12 of the intersection exceeds the vertical surface where the edge of the top mold 1-11 of the straight road is located ( Figure 8As shown in b), at this time, it is only necessary to use the hydraulic pushing device 1-114 to pull the fixing seat 1-131 in the opposite direction of the intersection top mold 1-12, so that the fixing seat 1-131 drives the intersection top mold 1-12 to hide in the vertical plane where the edge of the straight top mold 1-11 is located.

[0029] During the above-mentioned flipping, a mechanical arm or a cylinder arranged on the top mold 1-12 at the intersection can be used. The specific method will not be described in detail here.

[0030] like Fig. 9 As shown in the figure, after the construction of the intersection is completed, if the two trolleys in the maintenance channel need to be transferred from the track in the maintenance channel to the track in the main line tunnel, one way is to disassemble the trolleys and then assemble them in the main line tunnel, which obviously cannot meet the requirements of fast construction. If the trolleys in the maintenance channel can be directly transferred to the track in the main line tunnel, the construction speed can be greatly accelerated, but due to the limited space in the tunnel after the lining is completed, if they are directly transferred, the space cannot be met.

[0031] In order to reduce the space occupied by the trolley above and below and thus realize the direct transfer of the trolley from the maintenance channel to the main line tunnel, the present application provides a specific implementation scheme, such as Figure 3 As shown, the straight top mold 1-11 includes a first straight top mold 1-111 and a second straight top mold 1-112; the concave sides of the first straight top mold 1-111 and the second straight top mold 1-112 are both provided with a second flipping cylinder 4 for folding the straight top mold 1-11. In order to improve stability, the first straight top mold 1-111 and the second straight top mold 1-112 are each provided with two second flipping cylinders 4, the free end of the second flipping cylinder 4 is connected to the straight top mold, and the other end is fixed on the supporting walking system 2.

[0032] like Fig.10 As shown, in the unturned state, the first straight track top mold 1-111 and the second straight track top mold 1-112 are supported by the columns. When it is necessary to turn over, the columns are removed, and the first straight track top mold 1-111 is first turned down using the second turning cylinder 4, and then the second straight track top mold 1-112 is turned over after it is turned into place. After being completely turned over, the first straight track top mold 1-111 and the second straight track top mold 1-112 will be away from the top wall of the tunnel, as shown in FIG. Fig.11 shown.

[0033] The above-mentioned design scheme requires the removal of the intersection top form 1-12 before flipping, but this will also increase the construction workload. In order to further improve the construction efficiency, the intersection top form 1-12 includes a first intersection top form 1-121 and a second intersection top form 1-122; a rotating assembly 1-13 is provided between the first intersection top form 1-121 and the first straight top form 1-111 and between the second intersection top form 1-122 and the second straight top form 1-112. In order to facilitate the flipping of the first intersection top form 1-121 and the second intersection top form 1-122 relative to the first straight top form 1-111 and the second straight top form 1-112, as Fig.10 As shown, the first turning cylinder 3 connected to the supporting walking system 2 is respectively arranged on the first intersection top mold 1-121 and the second intersection top mold 1-122. Specifically, the free end of the first turning cylinder 3 is arranged on the first intersection top mold 1-121 and the second intersection top mold 1-122, and the other end is fixed on the supporting walking system 2 (for example, on the crossbeam of the supporting walking system 2).

[0034] During transportation, in addition to reducing the space occupied by the top mold 1-1, Fig.10 It can be seen that the side mold 1-2 will also affect the efficiency of transportation. Therefore, based on the above technical solution, a third flip cylinder 5 for controlling the distance between the side mold 1-2 and the tunnel side wall is provided on the side mold 1-2. Before transportation, the third flip cylinder 5 is used to flip the side mold 1-2 away from the tunnel side wall, thereby increasing the distance between the side mold 1-2 and the tunnel side wall.

[0035] In addition to turning over and folding the top mold 1-1 and the side mold 1-2, the height of the supporting walking system 2 can be reduced as a whole to achieve the purpose of reducing the upper and lower space occupied. The height of the supporting walking system 2 can be reduced by lowering the height of the gantry; in addition, the left and right space occupied by the trolley can be reduced by reducing the width of the supporting walking system 2, which can be achieved by shrinking the length of the supporting crossbeam 2-1. Fig.10 The above two methods are both prior art and will not be described in detail here.

[0036] The trolley of the present application that can realize the flipping and recycling of the top mold 1-1 and the flipping and recycling of the side mold 1-2 can flip and recycle the top mold 1-1 and the side mold 1-2 respectively after the construction at a cross intersection is completed, so as to increase the distance between the trolley and the tunnel wall, thereby realizing the direct transfer of the trolley located in the maintenance channel to the track in the main line of the tunnel, which greatly improves the efficiency of construction.

[0037] The supporting walking system 2 can use devices in the prior art, which mainly include a gantry assembly for supporting the formwork system 1, a jacking system for adjusting the height of the trolley and a walking system for driving the trolley to walk on a track laid in the tunnel; the gantry assembly, the jacking system and the walking system are all conventional technical means of those skilled in the art and are no longer numbered in the figure.

[0038] The portal assembly is provided with a supporting beam 2-1 for supporting the formwork system 1, and the first straight top mold 1-111 and the second straight top mold 1-112 are respectively connected to the two ends of the supporting beam 2-1 in a hinged manner; the two side molds 1-2 are connected to the two ends of the supporting beam 2-1 in a hinged manner.

[0039] When the second turning cylinder 4 corresponding to the first straight top mold 1-111 is recovered, the first straight top mold 1-111 rotates around the hinge with the end of the supporting beam 2-1; When the second turning cylinder 4 corresponding to the second straight track top mold 1-112 is recovered, the second straight track top mold 1-112 rotates around the hinge with the end of the supporting beam 2-1.

[0040] When the third turning cylinder 5 corresponding to the side mold 1-2 is recovered, the side mold 1-2 rotates around the hinge with the end of the supporting beam 2-1.

[0041] Based on the lining trolley group for tunnel construction including a cross intersection in Example 1, the present application also provides a specific construction method. Before construction, the formwork systems 1 of the four lining trolleys are assembled and spliced ​​to form an integral formwork for tunnel construction at the intersection.

[0042] During construction, four delivery pumps are used to pour concrete simultaneously. The concrete is poured from bottom to top. The concrete is poured near the top of the arch. During the pouring process, an attached high-frequency vibrator with an inserted vibration assist arrangement is used for vibration.

[0043] After construction, (1) if there are no other intersections to be constructed, the intersection top formwork 1-12 can be directly disassembled (only the straight road top formwork 1-11 is retained), and then the straight road top formwork 1-11 of the four trolleys can be assembled into trolley groups with a length of 12m (two trolleys), 18m (three trolleys) and 24m (four trolleys). This assembled straight road top formwork is used for the lining construction of the main line tunnel; (2) If the trolley assembly needs to be transferred to the next intersection for construction after construction, the overall length, height and width of the trolley need to be reduced so that the formwork system 1 of the trolley is as far away from the tunnel wall as possible; ①The method to reduce the overall length of the trolley is: Use the first turning cylinder 3 to turn the intersection top mold 1-12 downward, and then hide it under the straight top mold 1-11; the specific turning method refers to the description in Example 1, which will not be repeated here; ②The method to reduce the overall height of the trolley is: Use the second turning cylinder 4 to first fold the first straight track top mold 1-111 downward, and then fold the second straight track top mold 1-112 after it is folded in place. After being completely folded, the first straight track top mold 1-111 and the second straight track top mold 1-112 will be away from the tunnel top wall; You can also lower the height of the entire trolley by lowering the height of the gantry; The method to reduce the overall width of the trolley is: The side mold 1-2 is flipped away from the tunnel side wall by using the third flipping cylinder 5, thereby increasing the distance between the side mold 1-2 and the tunnel side wall; The left and right space occupied by the trolley can also be reduced by reducing the width of the supporting travel system 2 .

[0044] After completing work (1) or (2), the four trolleys are transferred to the tracks laid in the main line tunnel and the trolley group is transported to the next construction site.

[0045] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the scope of protection of the present invention.

Claims

1. A lining trolley assembly for tunnel construction including a cross intersection, characterized in that: It comprises four foldable lining trolleys, each foldable lining trolley comprising a template system (1) for forming a stable grouting space between the tunnel and a supporting walking system (2) for carrying and driving the template system (1) to move in the tunnel; The formwork system (1) comprises a top formwork (1-1) for grouting of the tunnel top wall lining and a side formwork (1-2) for grouting of the tunnel side wall lining; The top form (1-1) comprises a straight top form (1-11) for lining grouting the top wall of a tunnel at a non-cross intersection and an intersection top form (1-12) for lining grouting the top wall of a tunnel at a cross intersection; The straight road top formwork (1-11) is an arc-shaped formwork that is integrally matched with the arc-shaped top wall of the tunnel; the intersection top formwork (1-12) is an arc-shaped formwork that is integrally matched with the arc-shaped top wall of the tunnel and has a joint angle formed at one end away from the straight road top formwork (1-11) that is compatible with the intersection top forms (1-12) of the other three foldable lining trolleys; Four intersection top molds (1-12) of four folding lining trolleys are assembled together to form an integral formwork for lining grouting of the tunnel top wall at the intersection.

2. The lining trolley assembly for tunnel construction including a cross intersection according to claim 1, characterized in that: The straight track top mold (1-11) and the intersection top mold (1-12) are connected in a detachable manner.

3. The lining trolley assembly for tunnel construction including a cross intersection according to claim 1 or 2, characterized in that: A rotating assembly (1-13) is provided between the straight road top mold (1-11) and the intersection top mold (1-12), which is used for the intersection top mold (1-12) to flip downward around the end of the straight road top mold (1-11), and any position of the flipped intersection top mold (1-12) does not exceed the vertical plane where the edge of the straight road top mold 1-11 is located.

4. The lining trolley assembly for tunnel construction including a cross intersection according to claim 3, characterized in that: The rotating assembly (1-13) comprises a fixed seat (1-131) arranged on the concave side of the straight track top mold (1-11) close to the end thereof and a fixed plate (1-132) fixed to the concave side end of the intersection top mold (1-12); the other end of the fixed plate (1-132) is rotatably connected to the fixed seat (1-131) via a fixed pin (1-133).

5. The lining trolley assembly for tunnel construction including a cross intersection according to claim 3, characterized in that: The concave side of the straight track top mold (1-11) is provided with a slide groove (1-113) for the fixed seat (1-131) to slide, and a hydraulic pushing device (1-114) for pushing the fixed seat (1-131) to slide in the slide groove (1-113).

6. The lining trolley assembly for tunnel construction including a cross intersection according to claim 4, characterized in that: The straight track top mold (1-11) comprises a first straight track top mold (1-111) and a second straight track top mold (1-112); the concave side of the first straight track top mold (1-111) and the second straight track top mold (1-112) are both provided with a second turning cylinder (4) for turning over the straight track top mold (1-11).

7. The lining trolley assembly for tunnel construction including a cross intersection according to claim 6, characterized in that: The intersection top mold (1-12) comprises a first intersection top mold (1-121) and a second intersection top mold (1-122); a rotating assembly (1-13) is provided between the first intersection top mold (1-121) and the first straight road top mold (1-111) and between the second intersection top mold (1-122) and the second straight road top mold (1-112).

8. The lining trolley assembly for tunnel construction including a cross intersection according to claim 1, characterized in that: The side mold (1-2) is provided with a third turning cylinder (5) for controlling the distance between the side mold (1-2) and the tunnel side wall.

9. The lining trolley assembly for tunnel construction including a cross intersection according to claim 1, characterized in that: The supporting walking system (2) comprises a gantry assembly for supporting the formwork system (1), a lifting system for adjusting the height of the trolley, and a walking system for driving the trolley to walk on a track laid in the tunnel; The portal assembly is provided with a supporting crossbeam (2-1) for supporting the formwork system (1); the first straight track top form (1-111) and the second straight track top form (1-112) are respectively connected to two ends of the supporting crossbeam (2-1) in an articulated manner; and the two side forms (1-2) are connected to two ends of the supporting crossbeam (2-1) in an articulated manner.

10. A method for tunnel construction comprising a cross intersection, characterized in that: Use the lining trolley assembly described in any one of claims 1 to 9.

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