Separate formwork trolley for tunnel arch lining by hole pile method and construction method thereof

Abstract

The application relates to a hole-pile-method arch-lining separated formwork trolley and a construction method thereof, and the technical scheme points are as follows: the trolley comprises a first trolley for construction operation, a second trolley for assisting the first trolley, and at least one steel track; the steel track is laid on a road surface; the second trolley is movably arranged on the steel track; the first trolley is movably arranged on the upper end of the second trolley; a pouring mechanism for arch-lining construction is arranged on the first trolley; a fixing mechanism for fixing the first trolley on a formed arch is arranged on the first trolley; a walking mechanism for moving the second trolley on the steel track, a lifting mechanism for adjusting the working height of the second trolley, and a supporting mechanism for supporting and fixing the second trolley are arranged on the second trolley; the application has the advantages of low cost, reliable structure, convenient operation, free movement, fast lining speed, and good structure forming effect.

Description

Technical Field

[0001] This invention relates to the field of engineering construction equipment, and more specifically, to a separate formwork trolley for the tunnel-pile method of arch lining and its construction method. Background Technology

[0002] The construction of the arch lining in tunnel-pile method railway stations generally adopts a formwork support system. This involves erecting a full-span scaffold, timber, and formwork combination to construct the arch lining structure. The formwork support can only be removed after the arch lining reaches its design strength. During the arch lining construction, this affects the excavation work at the tunnel face, forcing excavation and lining construction to be carried out in single-process operations, severely impacting the on-site construction progress and making construction organization difficult. The formwork support construction process requires multiple transfers and cyclical construction, making material management difficult, resulting in significant waste and increased material costs. Furthermore, the formwork support construction generally involves assembling templates, which can easily lead to misalignment at the joints, resulting in poor structural appearance quality. The erection and dismantling of the formwork support reduces construction efficiency, and the concrete pouring load for the arch lining is substantial. Formwork support is considered a high-risk project exceeding a certain scale, with the risk of instability and overturning during concrete pouring. Therefore, improvements are needed. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a separate formwork trolley for the tunnel-pile method of arch lining and its construction method, which solves the problems of poor construction quality, high risk of temporary support removal, and low construction efficiency in existing technologies. It has the advantages of low cost, reliable structure, convenient operation, free movement, fast lining speed, and good structural forming effect.

[0004] The first technical objective of this invention is achieved through the following technical solution: a separate formwork trolley for arch lining construction using the tunnel-pile method, comprising: a first trolley for construction operations, a second trolley for assisting the first trolley, and at least one steel rail; the steel rail is laid on the road surface; the second trolley is movably mounted on the steel rail; the first trolley is movably mounted on the upper end of the second trolley; the first trolley is provided with a pouring mechanism for arch lining operations and a fixing mechanism for fixing the first trolley to the formed arch; the second trolley is provided with a traveling mechanism for moving the second trolley on the steel rail, a lifting mechanism for adjusting the working height of the second trolley, and a supporting mechanism for supporting and fixing the second trolley.

[0005] In one embodiment of the above technical solution, the first vehicle includes: a first support and a top mold for assisting in the arching formation after casting; the first support is movably disposed on the upper end of the second vehicle; the top mold is mounted on the first support; the casting mechanism is mounted on the first support; and the fixing mechanism is mounted on the top mold.

[0006] In one embodiment of the above technical solution, a plurality of working windows are provided on the top formwork for construction workers to perform arch lining operations; a walking device is provided at the lower end of the first support for the first support to move on the second vehicle.

[0007] In one embodiment of the above technical solution, the pouring mechanism includes: a material conveying device for outputting concrete, and an electric vibrator for compacting the poured concrete; both the material conveying device and the electric vibrator are mounted on the first support.

[0008] In one embodiment of the above technical solution, the fixing mechanism includes: a fixing frame and a plurality of fixing anchor rods that can fix the first bracket to the shaped buckle arch; the fixing frame is installed on the first bracket; and the plurality of fixing anchor rods are detachably mounted on the fixing frame.

[0009] In one embodiment of the above technical solution, the second vehicle includes: a second support and a side mold for supporting and fixing the second support from the side longitudinal beam during operation; the second support is movably mounted on the steel rail; the first support is movably mounted on the upper end of the second support; the lifting mechanism, the support mechanism and the side mold are all mounted on the second support; the traveling mechanism is fixedly connected to the second support, and the drive end of the traveling mechanism is movably mounted on the steel rail.

[0010] In one embodiment of the above technical solution, the second support is a portal frame structure; and reinforcing ribs for enhancing structural strength are also provided on both sides of the second support.

[0011] In one embodiment of the above technical solution, the support mechanism includes: a plurality of vertical support shoes for assisting the second support in resisting vertical pressure during operation, and a plurality of inclined support shoes for enhancing the stability of the second support; one end of the vertical support shoe is rotatably mounted on the second support, and the other end of the vertical support shoe abuts against the steel rail; one end of the inclined support shoe is rotatably mounted on the second support, and the other end of the inclined support shoe abuts against the road surface.

[0012] In one embodiment of the above technical solution, a ladder is movably provided on the second support, allowing construction workers to climb onto the first support for construction work.

[0013] The second technical objective of this invention is achieved through the following technical solution: a construction method for a separate formwork trolley used in the tunnel-pile method for arch lining, comprising the following steps:

[0014] S01: Manually break through the first section of the pilot tunnel. After the breaking is completed, establish preliminary support in the first section of the pilot tunnel and lay steel rails on the ground.

[0015] S02: Erect a second vehicle on the steel rails, so that the second vehicle can be initially supported and positioned on the steel rails, and carry out preparatory work such as waterproofing the first section of the guide tunnel and fabricating and installing steel bars on the second vehicle.

[0016] S03: Set up the first car on the second car. After the first car is set up, adjust the lifting mechanism of the second car so that the top formwork of the first car is matched with the top of the first guide tunnel and the positioning is completed.

[0017] S04: After the top mold is positioned, adjust the side mold of the second car so that the side mold is pressed against the side longitudinal beam on one side of the hole, thus completing the overall positioning of the first car and the second car.

[0018] S05: The first vehicle is fixed to the lower end of the first guide tunnel by the fixing mechanism, and the first guide tunnel is lining the arch by the pouring mechanism. At the same time as the lining, the second guide tunnel is manually broken and the initial support is established and the steel track is laid.

[0019] S06: After the lining is completed, the first car is fixed at the lower end of the arch of the first guide tunnel. The second car moves along the steel track into the second guide tunnel after the demolition is completed. On the second car, preparatory work such as waterproofing and steel reinforcement fabrication and installation of the second guide tunnel is carried out.

[0020] S07: After the arch strength of the first guide tunnel reaches the requirement, remove the fixing mechanism and move the first car to the second car of the second guide tunnel. After the movement is completed, adjust the lifting mechanism of the second car so that the top mold of the first car is adapted to the top of the first guide tunnel and the positioning is completed.

[0021] S08: After completing S07, return to S04 and repeat the above steps until the tunnel piles are completed.

[0022] In summary, the present invention has the following beneficial effects:

[0023] 1. In this application, the tunnel pile method for arch lining adopts a separate formwork trolley instead of a formwork support, which makes the construction method of tunnel pile more flexible. During the construction of the arch lining, the excavation equipment at the front face can pass smoothly under the formwork trolley without affecting the excavation construction at the front face, so as to realize the simultaneous implementation of excavation and lining structure construction and improve on-site construction efficiency.

[0024] 2. When using a detachable formwork trolley for pile foundation construction, there is no need to dismantle the formwork support, which can speed up the construction progress; the formwork trolley is equipped with multiple fixed support structures, which are reliable and make the formwork trolley more stable during construction, reducing safety risks; the support structure can be freely stored when demolding, enabling rapid cyclic construction.

[0025] 3. The formwork trolley is divided into a first trolley and a second trolley, which can be separated at the top and bottom. The first trolley can be used for the construction of the arch lining using the hole-pile method, and the second trolley can assist the first trolley in its construction work. The operation is convenient. The detachable formwork trolley allows multiple construction processes to be carried out at the same time, which improves the lining speed and reduces construction costs, resulting in good economic benefits. Attached Figure Description

[0026] Figure 1 This is a front structural diagram of the template trolley in this invention;

[0027] Figure 2 This is a side view of the template trolley in this invention;

[0028] Figure 3 This is a schematic diagram of the front structure of the first vehicle in this invention;

[0029] Figure 4 This is a schematic diagram of the front structure of the second vehicle in this invention;

[0030] Figure 5 This is a side view of the second vehicle in this invention;

[0031] Figure 6 This is a schematic diagram of the first process of the construction method in this invention;

[0032] Figure 7 This is a schematic diagram of the second process of the construction method in this invention;

[0033] Figure 8 This is a schematic diagram of the third process of the construction method in this invention;

[0034] Figure 9 This is a schematic diagram of the fourth process of the construction method in this invention;

[0035] Figure 10 This is a schematic diagram of the cross-section of the tunnel pile during actual construction of the present invention.

[0036] In the diagram: 1. First vehicle; 11. First support; 12. Top formwork; 13. Working window; 14. Walking mechanism; 2. Second vehicle; 21. Second support; 22. Side formwork; 23. Reinforcing rib; 31. Steel track; 32. Road surface; 41. Pouring mechanism; 42. Fixing mechanism; 43. Walking mechanism; 44. Lifting mechanism; 45. Supporting mechanism; 5. Arch; 6. Side longitudinal beam; 7. Ladder; 81. First guide tunnel; 82. Second guide tunnel; 9. Waterproofing and steel reinforcement fabrication and installation; 10. Reserved gap. Detailed Implementation

[0037] To make the objectives, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0039] In this invention, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. The terms "vertical," "horizontal," "left," "right," "above," "below," and similar expressions are for illustrative purposes only and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0040] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] like Figures 1 to 5 As shown, the present invention provides a separate formwork trolley for the arch lining of the tunnel pile method, comprising: a first trolley 1 for construction operations, a second trolley 2 for assisting the first trolley 1, and at least one steel rail 31; the steel rail 31 is laid on the road surface 32; the second trolley 2 is movably mounted on the steel rail 31; the first trolley 1 is movably mounted on the upper end of the second trolley 2; the first trolley 1 is provided with a pouring mechanism 41 for performing the arch lining operation, and a fixing mechanism 42 for fixing the first trolley 1 to the formed arch 5; the second trolley 2 is provided with a traveling mechanism 43 for moving the second trolley 2 on the steel rail 31, a lifting mechanism 44 for adjusting the working height of the second trolley 2, and a support mechanism 45 for supporting and fixing the second trolley 2.

[0042] In this embodiment, the template trolley consists of two parts: a first trolley 1 for construction operations and a second trolley 2 to assist the first trolley 1. The first trolley 1 is movably mounted on the upper end of the second trolley 2 (the first trolley 1 can move on the upper surface of the second trolley 2). A steel rail 31 is laid on the road surface inside the guide tunnel, and the template trolley can move on the steel rail 31, thereby achieving the movement effect of the template trolley within the guide tunnel through the steel rail 31. A pouring mechanism 41 and a fixing mechanism 42 are provided on the first trolley 1. The pouring mechanism 41 can be used for the lining operation of the arch 5, and the fixing mechanism 42 can be used to fix the first trolley 1 on the formed arch 5. A traveling mechanism 43, a lifting mechanism 44, and a supporting mechanism 45 are provided on the second trolley 2. The traveling mechanism 43 can be used to drive the second trolley 2 to move on the steel rail 31, the lifting mechanism 44 can be used to adjust the working height of the second trolley 2 (indirectly adjusting the working height of the first trolley 1), and the supporting mechanism 45 can support and fix the second trolley 2, thereby making the second trolley 2 more stable and reliable during construction.

[0043] The working principle of the tunnel-pile method arch lining separation formwork trolley of the present invention is as follows: After manually breaking the first section of the guide tunnel and building the initial support, a steel track 31 is laid on the road surface inside the first section of the guide tunnel. After laying, a second trolley 2 (including a walking mechanism 43, a lifting mechanism 44 and a support mechanism 45) is erected on the steel track 31. Construction personnel can carry out preparatory work before arch lining, such as waterproofing and steel bar fabrication and installation, on the second trolley 2.

[0044] After the preparatory work is completed, the first car 1 (including the pouring mechanism 41 and the fixing mechanism 42) is erected on the basis of the second car 2. After the first car 1 is erected, the lifting mechanism 44 is adjusted so that the second car 2 drives the first car 1 to move upward and press against the lower end of the first guide tunnel to position the car. After positioning, the upper end of the first car 1 is fixed to the lower end of the first guide tunnel through the fixing mechanism 42. After the fixing is completed, the construction personnel can carry out the arch lining construction work on the lower end of the first guide tunnel through the pouring mechanism 41. At this time, the manual excavation and demolition of the second guide tunnel below the formwork car (including preparatory work such as laying steel rails 31) is carried out simultaneously with the arch lining construction.

[0045] After the arch lining of the first guide tunnel is completed, the first trolley 1 is fixedly suspended at the lower end of the arch (at this time, the arch has not reached the strength requirement). The second trolley 2 can move along the steel rail 31 into the second guide tunnel to carry out preparatory work such as waterproofing and steel reinforcement fabrication and installation. At this time, a second trolley 2 can be erected below the first trolley 1 (the second trolley 2 can play the role of curing the first trolley 1 with formwork). When the arch strength of the first guide tunnel reaches the requirement, the fixing mechanism can be removed to separate the formed arch from the first trolley 1. After separation, the first trolley 1 can move from the second trolley 2 in the first guide tunnel to the second trolley 2 in the second guide tunnel. After positioning is completed (the positioning principle is the same as above), the construction personnel can carry out the arch lining construction work at the lower end of the second guide tunnel. At this time, the manual excavation and demolition of the third guide tunnel below the formwork trolley is carried out simultaneously with the arch lining construction.

[0046] The above construction steps are repeated until the tunnel piles are driven through, enabling rapid cyclical construction of the formwork trolley. Compared with the traditional formwork support construction method, the construction method of this application is more flexible, easier to operate, more efficient on-site construction, lower in construction cost, and more economically beneficial.

[0047] Furthermore, the first carriage 1 includes: a first support 11 and a top mold 12 for assisting in the formation of the arch 5 after casting; the first support 11 is movably disposed on the upper end of the second carriage 2; the top mold 12 is mounted on the first support 11; the casting mechanism 41 is mounted on the first support 11; and the fixing mechanism 42 is mounted on the top mold 12.

[0048] In this embodiment, the first vehicle 1 consists of a first support 11 and a top mold 12. The top mold 12 is installed on the upper end of the first support 11. The first support 11 is movably disposed on the upper end of the second vehicle 2 (the first support 11 can move on the second vehicle 2). The top mold 12 is used to assist the forming of the arch 5 after pouring (the concrete needs to stand for a period of time after pouring to fully form). The outer surface shape of the top mold 12 corresponds to and matches the shape of the lower surface of the arch 5.

[0049] Furthermore, a number of working windows 13 are provided on the top formwork 12 for construction workers to carry out the lining work of the arch 5; a walking device 14 is provided at the lower end of the first support 11 for the first support 11 to move on the second vehicle 2.

[0050] In this embodiment, a plurality of working windows 13 are provided on the top formwork 12, and the spacing between the plurality of working windows 13 is equal. Construction workers on the first support 11 can carry out arch lining construction work through the aforementioned working windows 13. A walking device 14 is provided at the lower end of the first support 11. The walking device 14 can be a drive wheel device or other moving device. The first support 11 achieves its movement effect on the second vehicle 2 through the walking device 14.

[0051] Furthermore, the pouring mechanism 41 includes: a material conveying device for discharging concrete, and an electric vibrator for compacting the poured concrete; both the material conveying device and the electric vibrator are mounted on the first support 11.

[0052] In this embodiment, the pouring mechanism 41 consists of two parts: a material conveying device and an electric vibrator. The material conveying device is used to output concrete onto the top formwork 12 (the arch 5 is made of concrete). The electric vibrator is used to compact the concrete output by the material conveying device, thereby improving the strength of the concrete and ensuring the quality of the component. The use of both the material conveying device and the electric vibrator are common technical means used by technicians in the field of building construction. The specific implementation methods of both will not be described in detail here.

[0053] Furthermore, the fixing mechanism 42 includes: a fixing frame and a plurality of fixing anchor rods that can fix the first support 11 to the shaped buckle arch 5; the fixing frame is installed on the first support 11; and the plurality of fixing anchor rods can be detachably installed on the fixing frame.

[0054] In this embodiment, the fixing frame is installed on the first support 11, and the fixing anchor is detachably installed on the fixing frame. The fixing anchor is for single use. When the fixing mechanism 42 is removed to separate the first support 11 from the first section of the guide tunnel, the fixing anchor separates from the fixing frame and remains on the arch after the first section of the guide tunnel is formed. The fixing anchor can also serve as a backfill grouting pipe behind the lining. The fixing frame moves together with the first support 11. Construction workers can reinstall another batch of fixing anchors on the fixing frame to prepare for the fixing of the next section of the guide tunnel.

[0055] Furthermore, the second vehicle 2 includes: a second support 21 and a side mold 22 for pressing against the side longitudinal beam 6 during operation to provide lateral support and fixation for the second support 21; the second support 21 is movably mounted on the steel rail 31; the first support 11 is movably mounted on the upper end of the second support 21; the lifting mechanism 44, the support mechanism 45, and the side mold 22 are all mounted on the second support 21; the traveling mechanism 43 is fixedly connected to the second support 21, and the drive end of the traveling mechanism 43 is movably mounted on the steel rail 31.

[0056] In this embodiment, the second carriage 2 consists of a second support 21 and a side mold 22. The side mold 22 is set on the side of the second support 21 and is supported and positioned by several support rods. When the carriage is working, after the top mold 12 on the first support 11 is pressed against the top of the guide hole to complete the upper positioning, the side mold 22 can press against the side longitudinal beam 6 of the side wall of the guide hole to complete the side positioning of the second carriage 2, so that the second support 21 can be stably positioned on the steel rail 31. The lifting mechanism 44 and the support mechanism 45 are both installed on the second support 21. The lifting mechanism 44 can adjust the working height of the second support 21, thereby indirectly adjusting the height position of the first support 11 through the second support 21. The support mechanism 45 can be used to assist the second support 21 in supporting and fixing on the steel rail 31 and the road surface 32.

[0057] Furthermore, the second support 21 is a portal frame structure; reinforcing ribs 23 are also provided on both sides of the second support 21 to enhance the structural strength.

[0058] In this embodiment, the second support 21 adopts a portal frame structure, and reinforcing ribs 23 are provided on both sides of the lower end of the portal frame structure to enhance the structural strength of the second support 21. During construction, the second support 21 with a portal frame structure allows the excavation equipment at the front face (i.e., the excavation tunnel) to pass smoothly without affecting the excavation construction at the front face, thereby realizing the simultaneous implementation of excavation operations and lining structure construction and improving on-site construction efficiency.

[0059] Furthermore, the support mechanism 45 includes: a plurality of vertical support shoes for assisting the second support 21 in resisting vertical pressure during operation, and a plurality of inclined support shoes for enhancing the stability of the second support 21; one end of the vertical support shoe is rotatably mounted on the second support 21, and the other end of the vertical support shoe abuts against the steel rail 31; one end of the inclined support shoe is rotatably mounted on the second support 21, and the other end of the inclined support shoe abuts against the road surface 32.

[0060] In this embodiment, the support mechanism 45 consists of two types of support shoes: a vertical support shoe and an inclined support shoe. The vertical support shoe is vertically supported on the steel rail 31 when the formwork trolley is working, and is used to assist the second support 21 in resisting the vertical pressure of the large volume of concrete during the arch lining, thereby reducing construction risks and improving the quality of concrete construction. The inclined support shoe is set at the lower end of the second support 21 and abuts against the road surface 32, which can enhance the stability of the second support 21 during operation. Both the vertical and inclined support shoes are rotatably set on the second support 21. After the arch lining construction is completed, they can be rotated and retracted, so that the support mechanism 45 can be freely stored when the trolley is demolded, achieving the purpose of rapid cyclic construction.

[0061] Furthermore, a ladder 7 is movably installed on the second support 21, allowing construction workers to climb onto the first support 11 to carry out construction work.

[0062] In this embodiment, a ladder 7 is provided at the end of the second support 21, and construction workers can climb up to the first support 11 at the upper end of the second support 21 via the ladder 7, which facilitates the arch lining construction work above the first support 11.

[0063] Furthermore, such as Figures 6 to 9 As shown, the present invention provides a construction method for a separate formwork trolley used in the tunnel-pile method for arch lining, comprising the following steps:

[0064] S01: Manually break through the first section of the guide tunnel 81. After the breaking is completed, establish preliminary support in the first section of the guide tunnel 81 and lay steel rails 31 on the ground.

[0065] S02: Erect the second car 2 on the steel rail 31, so that the second car 2 completes the initial support and positioning on the steel rail 31, and carry out preparatory work such as waterproofing the first section of the guide tunnel 81 and steel bar fabrication and installation on the second car 2.

[0066] S03: Erect the first car 1 on the second car 2. After the erection is completed, adjust the lifting mechanism 44 of the second car 2 so that the top mold 12 of the first car 1 is adapted to the top of the first guide hole 81 and the positioning is completed.

[0067] S04: After the top mold 12 is positioned, adjust the side mold 22 of the second car 2 so that the side mold 22 is pressed against the side longitudinal beam 6 on one side of the hole, thus completing the overall positioning of the first car 1 and the second car 2.

[0068] S05: The first vehicle 1 is fixed to the lower end of the first guide tunnel 81 by the fixing mechanism 42, and the first guide tunnel 81 is lined with the arch 5 by the pouring mechanism 41. At the same time as the lining, the second guide tunnel 82 is manually broken and preliminary support is established and steel track 31 is laid.

[0069] S06: After the lining is completed, the first car 1 is fixed at the lower end of the arch 5 of the first guide tunnel 81, and the second car 2 moves along the steel rail 31 into the second guide tunnel 82 after the demolition is completed. On the second car 2, preparatory work such as waterproofing and steel bar fabrication and installation 9 of the second guide tunnel 82 is carried out.

[0070] S07: After the arch 5 of the first guide tunnel 81 reaches the required strength, remove the fixing mechanism 42 and move the first car 1 to the second car 2 of the second guide tunnel 82. After the movement is completed, adjust the lifting mechanism 44 of the second car 2 so that the top mold 12 of the first car 1 is adapted to the top of the first guide tunnel 81 and the positioning is completed.

[0071] S08: After completing S07, return to S04 and repeat the above steps until the tunnel piles are completed.

[0072] The construction method of the tunnel-pile method for arch lining separation formwork trolley of the present invention is as follows: After manually breaking the first section of the guide tunnel 81 and building the initial support, a steel track 31 is laid on the road surface inside the first section of the guide tunnel. After laying, a second trolley 2 is erected on the steel track 31 (the second trolley 2 includes a walking mechanism 43, a lifting mechanism 44 and a support mechanism 45). Construction personnel can carry out preparatory work before arch lining, such as waterproofing and steel bar fabrication and installation, on the second trolley 2.

[0073] After the preparatory work is completed, the first car 1 (including the pouring mechanism 41 and the fixing mechanism 42) is erected on the basis of the second car 2. After the first car 1 is erected, the lifting mechanism 44 of the second car 2 is adjusted so that the second car 2 drives the first car 1 to move upward and press against the lower end of the first guide tunnel 81 to position the car. After positioning, the upper end of the first car 1 is fixed to the lower end of the first guide tunnel 81 through the fixing mechanism 42. After the fixing is completed, the construction personnel can carry out the arch lining construction work on the lower end of the first guide tunnel 81 through the pouring mechanism 41. At this time, the manual excavation and demolition of the second guide tunnel 82 below the formwork car (including preparatory work such as laying steel rails 31) is carried out simultaneously with the arch lining construction.

[0074] After the arch lining of the first guide tunnel is completed, the first trolley 1 is fixedly suspended at the lower end of the arch (at this time, the arch has not reached the strength requirement). The second trolley 2 can move along the steel rail 31 into the second guide tunnel 82 to carry out preparatory work such as waterproofing and steel reinforcement fabrication and installation. At this time, a second trolley 2 can be erected below the first trolley 1 (the second trolley 2 can play a role in the curing of the first trolley 1). When the arch strength of the first guide tunnel 81 reaches the requirement, the fixing mechanism 42 can be removed to separate the formed arch from the first trolley 1. After separation, the first trolley 1... 1. It can be moved from the second second car 2 in the first guide tunnel 81 to the second car 2 in the second guide tunnel 82 (that is, there are two or more second cars 2 and one first car 1 set up during the construction process, and the first car 1 can move on the upper surface of several second cars 2). After the first car 1 is aligned with the second car 2 in the second guide tunnel 82 and the positioning is completed (the positioning principle is the same as above), the construction personnel can carry out the arch lining construction operation at the lower end of the second guide tunnel 82. At this time, the manual excavation and demolition of the third guide tunnel below the formwork trolley is carried out simultaneously with the above arch lining construction.

[0075] The above construction steps are repeated until the tunnel piles are driven through, thereby realizing the rapid cyclical construction of the formwork trolley. Compared with the traditional formwork support construction method, the construction method of this application is more flexible, easier to operate, more efficient on-site construction, lower construction cost, and better economic benefits.

[0076] In addition, a certain distance of reserved gap 10 is provided between the formwork trolley and the un-demolished guide hole wall (in this embodiment, the distance of the reserved gap 10 is 1 meter). The reserved gap 10 can ensure the safety of the formwork trolley during construction and prevent the distance between the formwork trolley and the wall from being too close, which would lead to construction difficulties.

[0077] Furthermore, such as Figure 10 As shown, in the actual construction process of the tunnel-pile method for arch lining, since the arch lining in the tunnel piles on both sides is carried out simultaneously, the formwork trolleys described in this application are set in the tunnel piles on both sides to facilitate the synchronous construction on both sides.

[0078] The present invention relates to a separate formwork trolley for the tunnel pile method of arch lining and its construction method, which has the advantages of low cost, reliable structure, convenient operation, free movement, fast lining speed and good structural forming effect.

[0079] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A construction method applied to a detachable formwork trolley for a tied-arch lining in a hole-piling method, characterized in that, The separate formwork trolley for the tunnel pile method arch lining includes: A first vehicle for carrying out construction work, a second vehicle for assisting the first vehicle, and at least one steel rail; The steel rails are laid on the road surface; The second vehicle is mounted on the steel rail; The first vehicle is movably positioned above the second vehicle; The first vehicle is equipped with a pouring mechanism for performing arch lining operations and a fixing mechanism for fixing the first vehicle onto the formed arch. The first vehicle includes: a first support frame and a top mold for assisting in the arch forming after casting; The second vehicle is equipped with a traveling mechanism that can drive the second vehicle to move on the steel rail, a lifting mechanism for adjusting the working height of the second vehicle, and a support mechanism for supporting and fixing the second vehicle. The second vehicle includes: a second support frame and a side mold for lateral support and fixation of the second support frame by pressing against the side longitudinal beam during operation; The fixing mechanism includes: a fixing frame, and a plurality of fixing anchor rods that can fix the first bracket to the shaped buckle arch; The fixing frame is mounted on the first bracket; Several of the aforementioned fixed anchor rods can be detachably mounted on the fixing frame; The construction method includes the following steps: S01: Manually break through the first section of the pilot tunnel. After the breaking is completed, establish preliminary support in the first section of the pilot tunnel and lay steel rails on the ground. S02: Erect a second vehicle on the steel rails, so that the second vehicle can be initially supported and positioned on the steel rails, and carry out preparatory work for the waterproofing of the first section of the guide tunnel and the fabrication and installation of steel bars on the second vehicle. S03: Set up the first car on the second car. After the first car is set up, adjust the lifting mechanism of the second car so that the top formwork of the first car is matched with the top of the first guide tunnel and the positioning is completed. S04: After the top mold is positioned, adjust the side mold of the second car so that the side mold is pressed against the side longitudinal beam on one side of the hole, thus completing the overall positioning of the first car and the second car. S05: The first vehicle is fixed to the lower end of the first guide tunnel by the fixing mechanism, and the first guide tunnel is lining the arch by the pouring mechanism. At the same time as the lining, the second guide tunnel is manually broken and the initial support is established and the steel track is laid. S06: After the lining is completed, the first car is fixed at the lower end of the arch of the first guide tunnel. The second car moves along the steel track into the second guide tunnel after the demolition is completed. On the second car, the preparatory work for the waterproofing and steel reinforcement fabrication and installation of the second guide tunnel is carried out. S07: After the arch strength of the first guide tunnel reaches the requirement, remove the fixing mechanism and move the first car to the second car of the second guide tunnel. After the movement is completed, adjust the lifting mechanism of the second car so that the top mold of the first car is adapted to the top of the first guide tunnel and the positioning is completed. S08: After completing S07, return to S04 and repeat the above steps until the tunnel piles are completed.

2. The construction method of a separate formwork trolley for arch lining in the tunnel-pile method according to claim 1, characterized in that, The first bracket is movably mounted on the upper end of the second vehicle; The top mold is mounted on the first bracket; The pouring mechanism is mounted on the first support; The fixing mechanism is installed on the top mold.

3. The construction method of a separate formwork trolley for arch lining in the tunnel-pile method according to claim 2, characterized in that, Several working windows are provided on the top formwork for construction workers to carry out arch lining work; A walking device is provided at the lower end of the first bracket, which allows the first bracket to move on the second vehicle.

4. The construction method of a separate formwork trolley for arch lining in the tunnel-pile method according to claim 2, characterized in that, The pouring mechanism includes: a material conveying device for outputting concrete, and an electric vibrator for compacting the poured concrete. Both the material conveying device and the electric vibrator are mounted on the first support.

5. A construction method for a separate formwork trolley used in the tunnel-pile method for arch lining, as described in any one of claims 2-4, characterized in that, The second support is movably mounted on the steel rail; The first bracket is movably mounted on the upper end of the second bracket; The lifting mechanism, the support mechanism, and the side mold are all mounted on the second bracket; The walking mechanism is fixedly connected to the second support, and the drive end of the walking mechanism is movably mounted on the steel rail.

6. The construction method of a separate formwork trolley for arch lining in the tunnel-pile method according to claim 5, characterized in that, The second support is a portal frame structure; Reinforcing ribs are also provided on both sides of the second bracket to enhance the structural strength.

7. The construction method of a separate formwork trolley for arch lining in the tunnel-pile method according to claim 6, characterized in that, The support mechanism includes: a plurality of vertical support shoes for assisting the second support in resisting vertical pressure during operation, and a plurality of diagonal support shoes for enhancing the stability of the second support. One end of the vertical support shoe is rotatably mounted on the second bracket, and the other end of the vertical support shoe abuts against the steel rail; one end of the diagonal support shoe is rotatably mounted on the second bracket, and the other end of the diagonal support shoe abuts against the road surface.

8. The construction method of a separate formwork trolley for arch lining in the tunnel-pile method according to claim 5, characterized in that, A ladder is movably installed on the second support, allowing construction workers to climb onto the first support for construction work.

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