Construction method for mounting tunnel top segmented reinforcement cage

Abstract

The invention provides a construction method for mounting a segmented reinforcement cage at the top of a tunnel, and belongs to the technical field of tunnel construction.The construction method comprises the steps that a carrier vehicle carries a bracket containing the reinforcement cage to run to the position below a trolley, and the bracket is hoisted to a reinforcement cage storage area of the trolley through a winch on the trolley; hoisting the reinforcement cage on the bracket by a hoist trolley on a first arc-shaped track on the trolley, moving the reinforcement cage to the middle position, and rotating the reinforcement cage from the longitudinal direction to the transverse direction; then a longitudinal moving trolley on the trolley bears the reinforcement cage and moves the reinforcement cage to a reinforcement cage mounting trolley on a second arc-shaped track, and the reinforcement cage mounting trolley grabs and fixes the reinforcement cage and conveys the reinforcement cage to a designated position along the second arc-shaped track; and then the reinforcement cage mounting trolley performs six-degree-of-freedom adjustment on the reinforcement cage, so that the reinforcement cage is accurately mounted to a target mounting position on the top surface of the tunnel. The working efficiency is improved, and the accuracy of the installation position of the reinforcement cage can be effectively guaranteed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of tunnel construction, and particularly relates to a construction method for installing a segmental reinforcement cage at the top of a tunnel. BACKGROUND

[0002] In the process of tunnel construction, the binding of the reinforcement cage is a necessary procedure, and the pouring of the tunnel secondary lining concrete can be carried out only after the reinforcement is bound. The quality and efficiency of the reinforcement cage binding directly affect the quality and progress of the subsequent processes and even the entire tunnel construction. The existing tunnel reinforcement installation adopts a binding mode, which requires multiple persons to stand at different positions on the reinforcement trolley to jointly relay and transfer so as to pull the reinforcement onto the trolley and then jointly lift it to fix it in position. This mode has low working efficiency, requires many persons, has high labor intensity, and cannot effectively guarantee the accuracy of the installation position of the reinforcement cage. At present, the existing reinforcement operation trolley only serves as a scaffold function and cannot meet the demand of the assembled reinforcement installation.

[0003] For the installation of the assembled reinforcement cage, the reinforcement cage at the top of the tunnel is in an arc shape and needs to be installed in segments (can be divided into three segments, that is, three arc-shaped reinforcement cages are arranged in sequence at the top of the tunnel at a construction position of a section, so as to form a large arc-shaped reinforcement cage at the top of the tunnel). In the construction process, the weight of each segmental reinforcement cage is about 800 kg, which is relatively heavy and cannot be installed by pure manual mode. Therefore, a construction method for installing the segmental reinforcement cage at the top of the tunnel needs to be designed to improve the working efficiency, reduce the personnel investment, and effectively guarantee the accuracy of the installation position of the reinforcement cage. SUMMARY

[0004] The present application aims to solve the problems of the prior art and provides a construction method for installing a segmental reinforcement cage at the top of a tunnel.

[0005] The present application is implemented by the following technical solutions:

[0006] A construction method for installing a segmental reinforcement cage at the top of a tunnel, comprising the following steps:

[0007] Step 1: A bracket carrying the reinforcement cage is carried by a ground material transport vehicle and driven to below the trolley;

[0008] Step 2: The bracket on the ground material transport vehicle is hoisted to the reinforcement cage storage area of the trolley by using the winch on the trolley;

[0009] Step 3: The uppermost reinforcement cage on the bracket is hoisted by the cage car on the first arc-shaped track on the trolley, hoisted to a height higher than the ventilation pipe, and then moved to the middle position below the first arc-shaped track while being hoisted by the cage car, and then the reinforcement cage is rotated from the longitudinal direction to the transverse direction by the construction personnel;

[0010] Step 4: The longitudinal moving trolley on the trolley moves along the longitudinal track on the top of the trolley to the position below the steel cage in the transverse state hoisted by the cage trolley, disconnects the cage trolley from the steel cage, and places the steel cage in the transverse state on the lifting arm of the longitudinal moving trolley;

[0011] Step 5: The longitudinal moving trolley carrying the steel cage moves along the longitudinal track on the top of the trolley to the steel cage installation trolley on the second arc-shaped track on the trolley, the lifting arm of the longitudinal moving trolley is lowered, the steel cage is placed on the steel cage installation trolley, the steel cage installation trolley grasps and fixes the steel cage, and the receiving is completed; then the steel cage installation trolley transports the steel cage along the second arc-shaped track to the designated position; then, the steel cage installation trolley adjusts the six degrees of freedom of the steel cage, i.e., longitudinal movement, deflection, radial movement, overturning, pitching and circumferential movement, so that the steel cage is accurately installed to the target installation position on the top surface of the tunnel;

[0012] Step 6: Steps 3-5 are repeated to install the next section of steel cage.

[0013] In the above technical solution, the trolley comprises a trolley body, a first arc-shaped track and a second arc-shaped track are arranged on the top of the trolley body, the position of the trolley body below the first arc-shaped track is arranged as a steel cage storage area, the steel cage storage area is used to accommodate the bracket, winches for hoisting the bracket are arranged on both sides of the steel cage storage area; a cage trolley is installed on the first arc-shaped track, which is used to provide hoisting and moving functions for the steel cage; a steel cage installation trolley is installed on the second arc-shaped track, which is used to grasp the steel cage and transport the steel cage to the designated installation position on the top surface of the tunnel; a longitudinal moving trolley is arranged on the trolley body, which is used to transport the steel cage hoisted by the cage trolley to the steel cage installation trolley.

[0014] In the above technical solution, in step 1, three stacked steel cages in the longitudinal state are carried on each bracket, and the three steel cages are three sectional steel cages to be installed on the top surface of the tunnel, which are respectively a B section steel cage, a C section steel cage and a D section steel cage.

[0015] In the above technical solution, two steel cage installation trolleys are arranged on the second arc-shaped track, during construction, the first steel cage installation trolley is used to receive and install the B section steel cage, while the second steel cage installation trolley receives the D section steel cage and transports it to the installation position, after the installation of the B section steel cage is completed, the first steel cage installation trolley receives the C section steel cage, and then the C section steel cage and the D section steel cage are installed at the same time.

[0016] In the technical scheme, the first arc-shaped track and the second arc-shaped track have the same curvature as the curvature of the top surface of the tunnel, the first arc-shaped track and the second arc-shaped track are arranged at intervals, and the upper surfaces of the first arc-shaped track and the second arc-shaped track are provided with teeth.

[0017] In the technical scheme, the steel reinforcement cage storage area is located on the outer side of the ventilation pipe.

[0018] In the technical scheme, the longitudinal moving trolley is installed on the longitudinal track at the middle position of the top of the trolley body, can move longitudinally, and has a height smaller than that of the first arc-shaped track, so that the longitudinal moving trolley can pass through the first arc-shaped track.

[0019] In the technical scheme, the main framework of the trolley body includes a lower portal frame and an upper portal frame, the middle left area of the upper portal frame is used for accommodating two ventilation pipes arranged side by side, the right area of the upper portal frame serves as the steel reinforcement cage storage area, the longitudinal track is arranged at the middle position of the top of the upper portal frame and used for the longitudinal moving trolley to travel, a step ladder is arranged on the trolley body and used for workers to go up and down, a through pipe guide cylinder is arranged at each end of the trolley body and used for the ventilation pipe to pass through, the first arc-shaped track is installed on the upper portal frame, the second arc-shaped track is installed on the lower portal frame, and the height of the first arc-shaped track is greater than that of the second arc-shaped track.

[0020] In the technical scheme, the bottom end of the hoisting rope of the gourd-shaped trolley is connected to a hoisting bracket, the hoisting bracket is arc-shaped, and a plurality of hoisting hooks are arranged at intervals on the hoisting bracket.

[0021] In the technical scheme, the longitudinal moving trolley has the following structure: a bottom plate is arranged, walking wheels are arranged at the bottom of the bottom plate, a vertical frame is arranged on the bottom plate, a lifting arm driven by a lifting driving cylinder is arranged on the vertical frame, and the lifting arm is used for being inserted into the bottom of the steel reinforcement cage and lifting the steel reinforcement cage.

[0022] In the technical scheme, the structure of the reinforcing cage installation trolley comprises a base shell, a wheel set matched with the second arc-shaped track is installed on the base shell to realize the reinforcing cage installation trolley walking along the second arc-shaped track, two reinforcing cage grabbing and positioning mechanisms are symmetrically arranged on the base shell to realize the grabbing and positioning of the reinforcing cage, the reinforcing cage grabbing and positioning mechanism comprises a longitudinally arranged supporting frame, two sliding seats are slidingly installed on the supporting frame, a grabbing hook is arranged on each sliding seat, the grabbing hook is installed on the outer side wall of the sliding seat through a rotating shaft and a rotating shaft connecting lug ear, a grabbing driving cylinder is arranged between the bottom end of the grabbing hook and the bottom end of the sliding seat, a longitudinal moving driving cylinder is arranged on the supporting frame, the longitudinal moving driving cylinder is connected with one of the sliding seats, and the two sliding seats are connected through a connecting plate, so that the two sliding seats are synchronously driven to slide along the supporting frame through the longitudinal moving driving cylinder, a lifting driving cylinder is arranged in the base shell, the supporting frame is installed on the top of the lifting driving cylinder through a hinged support, the hinge shaft of the hinged support is arranged perpendicularly to the longitudinal supporting frame, and a pitching driving cylinder is arranged between the hinged support and the supporting frame.

[0023] The advantages and beneficial effects of the present application are as follows:

[0024] The first arc-shaped track and the second arc-shaped track are arranged on the top of the trolley, the position of the trolley body below the first arc-shaped track is arranged as a reinforcing cage storage area, the reinforcing cage storage area is used for accommodating the bracket, and winches for hoisting the bracket are arranged on both sides of the reinforcing cage storage area, so that the material transfer with the ground material transport vehicle can be realized, that is, the bracket loaded with the reinforcing cage is transported to the position below the trolley by the ground material transport vehicle, then the bracket is connected with the lifting rope of the winch, and the bracket loaded with the reinforcing cage is lifted to the reinforcing cage storage area by the winch.

[0025] The hoist trolley is arranged on the first arc-shaped track, the reinforcing cage in the longitudinal placement state in the reinforcing cage storage area is first lifted from the outer side of the ventilation pipe to a height higher than the ventilation pipe by the hoist trolley, then the hoist trolley moves with the reinforcing cage to the middle position below the first arc-shaped track, so that the reinforcing cage has enough space to rotate from the longitudinal direction to the transverse direction.

[0026] The longitudinal moving trolley is further arranged on the trolley, and is used for transporting the reinforcing cage in the transverse state lifted by the hoist trolley to the reinforcing cage installation trolley.

[0027] The reinforcing cage installation trolley is arranged on the second arc-shaped track, the reinforcing cage installation trolley can grab and fix the reinforcing cage, and can adjust the six degrees of freedom of the reinforcing cage, that is, longitudinal movement, deflection, radial movement, overturning, pitching and circumferential movement, so that the reinforcing cage can be accurately installed to the target installation position of the tunnel top surface.

[0028] The present application is provided with two reinforcing cage installation trolleys on the second arc-shaped track, during construction, first through the first reinforcing cage installation trolley to carry out the B section reinforcing cage installation work and installation, while the B section reinforcing cage installation, the second reinforcing cage installation trolley carries D section reinforcing cage to the installation position, after the B section reinforcing cage installation is completed, the first reinforcing cage installation trolley carries C section reinforcing cage, then simultaneously installs C section reinforcing cage and D section reinforcing cage, thereby greatly improving the construction efficiency and shortening the construction period.

[0029] The trolley of the present application utilizes the cooperative work of the hoist trolley, the longitudinal transport trolley and the reinforcing cage installation trolley, can greatly improve the work efficiency, reduce the personnel investment, and effectively ensure the accuracy of the reinforcing cage installation position. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a front view structural schematic diagram of the trolley.

[0031] Figure 2 It is a side view structural schematic diagram of the trolley.

[0032] Figure 3 It is a hoisting structural schematic diagram of the bracket.

[0033] Figure 4 It is a structural schematic diagram of the main body frame of the trolley body.

[0034] Figure 5 It is a structural schematic diagram of the hoist rope connecting hanger of the hoist trolley.

[0035] Figure 6 It is a structural schematic diagram of the longitudinal transport trolley.

[0036] Figure 7 It is a structural schematic diagram of the longitudinal transport trolley after rising.

[0037] Figure 8 It is a three-dimensional structural schematic diagram of the reinforcing cage installation trolley.

[0038] Figure 9 It is a side view internal structural schematic diagram of the reinforcing cage installation trolley.

[0039] Figure 10 It is a front view internal structural schematic diagram of the reinforcing cage installation trolley.

[0040] Figure 11 It is a feeding state schematic diagram of the ground material transport vehicle driving to the trolley below.

[0041] Figure 12 It is a state schematic diagram of the reinforcing cage after being longitudinally rotated to be transversely.

[0042] Figure 13Fig. 6 is a schematic view of the longitudinal moving trolley moving to the position below the sling trolley.

[0043] Figure 14 Fig. 7 is a schematic view of the longitudinal moving trolley moving to the position of the reinforcement cage installing trolley.

[0044] Figure 15 Fig. 8 is a schematic view of installing the B section reinforcement cage.

[0045] Figure 16 Fig. 9 is a schematic view of installing the C section reinforcement cage and the D section reinforcement cage.

[0046] For those skilled in the art, other related drawings can be obtained according to the above drawings without creative labor. DETAILED DESCRIPTION

[0047] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme of the present application will be further described in combination with specific embodiments.

[0048] The embodiment provides a construction method for installing a tunnel top section reinforcement cage, and the construction method is realized based on a trolley.

[0049] The trolley will be introduced below in combination with Figure 1 Fig. 1, and Figure 10 Fig. 2.

[0050] The trolley will be introduced below in combination with Figure 1 Fig. 3, and Figure 2 The trolley comprises a trolley body 1, a walking wheel device 101 is arranged at the bottom of the trolley body, so as to realize walking of the trolley along the tunnel; a first arc-shaped track 11 and a second arc-shaped track 12 are arranged at the top of the trolley body 1, the radii of the first arc-shaped track 11 and the second arc-shaped track 12 are consistent with the radius of the tunnel top surface, and the first arc-shaped track and the second arc-shaped track are arranged in a spaced manner; a reinforcement cage storage area 2 is arranged at the position of the trolley body below the first arc-shaped track 11, the reinforcement cage storage area 2 is located outside the ventilation pipe 4, and the reinforcement cage storage area 2 is used for accommodating a bracket 9, the bracket 9 is used for accommodating a longitudinal state reinforcement cage 3, preferably, three longitudinal state reinforcement cages 3 are accommodated on the bracket 9, and the three reinforcement cages are three section reinforcement cages to be installed on the tunnel top surface respectively; a winch 91 is arranged on both sides of the reinforcement cage storage area 2, and the winch 91 is used for hoisting the bracket 9 to the reinforcement cage storage area 2, in particular, referring to Figure 3On both sides of the reinforcement cage storage area 2, two winches 91 are symmetrically arranged, and a pulley assembly 92 is arranged above the winch 91, and the lifting rope of the winch 91 is connected to the bracket 9 through the pulley assembly 92, so as to realize the lifting and lowering of the bracket 9, and the material transfer with the ground material transport vehicle can be realized (that is, the bracket loaded with the reinforcement cage is transported to the position below the trolley by the ground material transport vehicle, then the bracket 9 is connected to the lifting rope of the winch 91, and the bracket 9 loaded with the reinforcement cage is lifted to the reinforcement cage storage area 2 by the winch 91); the hoist trolley 5 is installed on the first arc-shaped track 11, and the hoist trolley 5 can walk on the first arc-shaped track 11, and is used to provide the hoisting and moving function for the reinforcement cage 3 (the hoisting and moving function refers to the functions of vertical lifting and horizontal moving, the reinforcement cage 3 in the longitudinal placement state in the reinforcement cage storage area 2 is lifted from the outside of the ventilation pipe 4 to a height higher than the ventilation pipe, and then the hoist trolley 5 moves the reinforcement cage 3 to the middle position below the first arc-shaped track 11, so that the reinforcement cage 3 has enough space to move in the middle position, and the reinforcement cage 3 is conveniently rotated from the longitudinal direction to the transverse direction); the reinforcement cage installation trolley 6 is installed on the second arc-shaped track 12, and the reinforcement cage installation trolley 6 can walk on the second arc-shaped track 12, and is used to grasp the reinforcement cage and transport the reinforcement cage to the specified installation position of the tunnel top surface; the longitudinal moving trolley 7 is arranged on the trolley body 1, and the longitudinal moving trolley 7 is installed on the longitudinal track 8 at the middle position of the top of the trolley body 1, can move longitudinally, and the height of the longitudinal moving trolley 7 is less than the height of the first arc-shaped track 11, so that the longitudinal moving trolley 7 can pass through the first arc-shaped track 11, and the longitudinal moving trolley 7 is used to transport the reinforcement cage 3 lifted by the hoist trolley 5 to the reinforcement cage installation trolley 6.

[0051] Further, a step ladder 104 is arranged on the trolley body 1, which is used for the construction personnel to go up and down; ventilation pipe guide cylinders 105 are arranged at both ends of the trolley body 1, and the ventilation pipe 4 penetrates into the ventilation pipe guide cylinders 105.

[0052] Further, two first arc-shaped tracks 11 and two reinforcement cage storage areas 2 are arranged on the trolley body 1, the hoist trolley 5 is arranged on each first arc-shaped track 11, the bracket 9 is arranged in each reinforcement cage storage area 2, each bracket 9 is lifted by the winch 91 on the trolley body 1, the winch 91 is arranged at both sides of the reinforcement cage storage area 2, and three longitudinal state reinforcement cages 3 are stacked on each bracket 9. Thus, two groups of reinforcement cages 3 (each group includes three stacked reinforcement cages) can be loaded on one trolley.

[0053] As a preferred mode, further, referring to the accompanying drawings Figure 4The main body frame of the trolley body 1 comprises a lower door frame 102 and an upper door frame 103. The middle left area 1031 of the upper door frame 103 is used for accommodating two parallel ventilation pipes 4. The right area 1032 of the upper door frame 103 serves as the reinforcement cage storage area 2. A longitudinal rail 8 is arranged at the top middle position of the upper door frame 103 for the longitudinal moving trolley 7 to run. The first arc-shaped rail 11 is arranged on the upper door frame 103, and the second arc-shaped rail 12 is arranged on the lower door frame 102. The length of the second arc-shaped rail 12 is large enough to enable the running range of the reinforcement cage installation trolley 6 on the second arc-shaped rail 12 to reach the construction positions of the three segments of the tunnel top surface BCD. In addition, the height of the first arc-shaped rail 11 is greater than the height of the second arc-shaped rail 12, and there is sufficient spacing between the second arc-shaped rail 12 and the tunnel top surface for installing the reinforcement cage installation trolley 6. The upper surfaces of the first arc-shaped rail 11 and the second arc-shaped rail 12 are provided with teeth for enabling the hoist trolley 5 and the reinforcement cage installation trolley 6 to run on the rails.

[0054] As a preferred mode, further referring to the accompanying drawings, Figure 5 The bottom end of the hoisting rope of the hoist trolley 5 is connected to a hanger 51, the hanger 51 is arc-shaped, a plurality of hanger hooks 52 are arranged on the hanger 51 at intervals, and the hanger hooks 52 are connected to the reinforcement cage 3.

[0055] As a preferred mode, further referring to the accompanying drawings, Figure 6 and the accompanying drawings, Figure 7 The longitudinal moving trolley 7 comprises a bottom plate 71, walking wheels 72 are arranged at the bottom of the bottom plate 71, the walking wheels 72 are driven by a motor to realize the running of the longitudinal moving trolley 7; a vertical frame 73 is arranged on the bottom plate 71, a lifting arm 74 is installed on the vertical frame 73 through a sliding block 75, a lifting drive cylinder 76 is arranged on the vertical frame 73, the action end of the lifting drive cylinder 76 is connected to the sliding block 75 through a connecting piece, and the lifting arm 74 is controlled to rise and fall through the lifting drive cylinder 76; during work, the lifting arm 74 is inserted into the bottom of the reinforcement cage 3, and then the lifting arm 74 is lifted by the lifting drive cylinder 76, so as to lift the reinforcement cage 3. Further, the bottom of the vertical frame 73 is connected to the bottom plate 71 through a rotating shaft 77, and an inclination drive cylinder 78 is arranged on the bottom plate 71 to adjust the inclination angle of the vertical frame 73, and further adjust the pitch angle of the reinforcement cage.

[0056] As a preferred mode, further referring to the accompanying drawings, Figure 8 - the accompanying drawings, Figure 10The structure of the reinforcement cage installation trolley 6 is as follows: a base shell 61 is provided, wheels matched with the second arc-shaped track 12 are installed on the base shell 61, so as to realize the walking of the reinforcement cage installation trolley along the second arc-shaped track 12; two reinforcement cage grabbing and positioning mechanisms 62 are symmetrically arranged on the base shell 61, and are used for realizing the grabbing and positioning of the reinforcement cage; specifically, the reinforcement cage grabbing and positioning mechanism 62 comprises a longitudinally arranged support frame 621, two sliding seats 622 are slidingly installed on the support frame 621, a grabbing hook 623 is arranged on each sliding seat 622, the grabbing hook 623 is installed on the outer side wall of the sliding seat 622 through a rotating shaft 624 and a rotating shaft connecting lug 6241, a grabbing driving cylinder 625 is arranged between the bottom end of the grabbing hook 623 and the bottom end of the sliding seat 622, the grabbing hook 623 is driven to move by the grabbing driving cylinder 625, so as to realize the grabbing of the reinforcement cage and stably fix the reinforcement cage on the sliding seat 622; further, the upper surface of the sliding seat 622 is inclined, so as to better adapt to the shape of the reinforcement cage and better support the reinforcement cage; a longitudinal movement driving cylinder 626 is arranged on the support frame 621, the longitudinal movement driving cylinder 626 is connected with one of the sliding seats 622, and the two sliding seats 622 are connected through a connecting plate 6221, so that the two sliding seats 622 are driven to synchronously slide along the support frame 621 by the longitudinal movement driving cylinder 626, and then the overall longitudinal position of the reinforcement cage is adjusted when the longitudinal movement driving cylinders 626 of the two reinforcement cage grabbing and positioning mechanisms 62 synchronously move, and the deflection angle of the reinforcement cage is adjusted when the longitudinal movement driving cylinders 626 of the two reinforcement cage grabbing and positioning mechanisms 62 asynchronously move; a lifting driving cylinder 627 is arranged in the base shell 61, the support frame 621 is installed on the top of the lifting driving cylinder 627 through a hinged support 628, the lifting of the support frame 621 is controlled by the lifting driving cylinder 627, and then the overall radial movement position of the reinforcement cage is adjusted when the lifting driving cylinders 627 of the two reinforcement cage grabbing and positioning mechanisms 62 synchronously move (since the reinforcement cage installation trolley walks on the arc-shaped track, the lifting here refers to the adjustment along the radial direction of the tunnel), and the overturning angle of the reinforcement cage is adjusted when the lifting driving cylinders 627 of the two reinforcement cage grabbing and positioning mechanisms 62 asynchronously move; the hinge shaft of the hinged support 628 is arranged perpendicularly to the longitudinal support frame 621, so that the support frame 621 has the freedom of rotating around the hinge shaft, which can be called the pitch freedom, a pitch driving cylinder 629 is arranged between the hinged support 628 and the support frame 621, so as to adjust the pitch angle of the support frame 621, that is, to realize the adjustment of the pitch angle of the reinforcement cage. In summary, the longitudinal movement, deflection, radial movement, overturning and pitch, and the circumferential movement of the reinforcement cage installation trolley 6 along the second arc-shaped track 12 are combined, so as to realize the six-degree-of-freedom adjustment of the reinforcement cage, and the reinforcement cage can be accurately installed to the target position on the top surface of the tunnel.

[0057] Further, the wheel set comprises a driven wheel set 63 and a driving wheel set 64. The driven wheel set 63 is arranged on the two side walls of the base shell 61, and two sets of driven wheels are arranged on each side wall, each set of driven wheels comprising two driven wheels arranged in an upper-lower staggered manner, the two driven wheels being respectively positioned on the upper side and the lower side of the flange of the second arc-shaped track 12, so that the base shell 61 is stably mounted on the second arc-shaped track 12 and cannot be separated from the second arc-shaped track 12. The driving wheel set 64 is arranged inside the base shell and is connected with the driving motor 65 inside the base shell. The driving wheel set 64 is engaged with the teeth on the upper surface of the second arc-shaped track 12, so as to realize the driving of the reinforcement cage mounting trolley 6 to move on the second arc-shaped track 12. Further, a clamping type parking device 66 is arranged on the side wall of the base shell 61. When the reinforcement cage mounting trolley 6 is stopped at a certain position, the clamping type parking device 66 clamps the flange of the second arc-shaped track 12, so that the reinforcement cage mounting trolley 6 is stably parked. Alternatively, in the case that the clamping type parking device 66 is not arranged, a driving motor 65 with good stopping function can also be selected, so as to realize the stable stopping of the reinforcement cage mounting trolley 6 at a required position on the second arc-shaped track 12.

[0058] Based on the above trolley, the construction method for mounting the segmented reinforcement cage of the tunnel top part of the present application is as follows:

[0059] Step 1: referring to the attached drawings Figure 11 Two brackets 9 carrying reinforcement cages are carried by a ground material transport vehicle 100, and the ground material transport vehicle 100 is driven to below the trolley. Each bracket 9 carries three stacked longitudinal steel cages 3, which are three segmented steel cages to be installed on the top surface of the tunnel, referred to as B, C and D steel cages (the steel cages on the two sides of the tunnel are referred to as A and E steel cages, and the construction method of the present application is about how to install the B, C and D steel cages).

[0060] Step 2: the winch 91 on the trolley is used to hoist the two brackets 9 on the ground material transport vehicle to the two steel cage storage areas 2 of the trolley respectively.

[0061] Step 3: the cage trolley 5 on the first arc-shaped track 11 of the trolley hoists the uppermost steel cage (B steel cage) on the bracket 9. After the steel cage 3 is hoisted to a height higher than the ventilation pipe, the cage trolley 5 moves the steel cage 3 to a middle position below the first arc-shaped track 11, so that the steel cage 3 has enough space to move in the middle position, and then the construction personnel rotates the steel cage 3 from the longitudinal direction to the transverse direction (see the attached drawings Figure 12 ).

[0062] Step 4: referring to the attached drawings Figure 13, the longitudinal moving trolley 7 on the trolley moves along the longitudinal rails on the top of the trolley to below the steel reinforcement cage 3 hoisted by the skip 5, the skip 5 is disconnected from the steel reinforcement cage 3 in the transverse state, and the steel reinforcement cage 3 in the transverse state is placed on the lifting arm 74 of the longitudinal moving trolley 7.

[0063] Step 5: refer to the attached Figure 14 , the longitudinal moving trolley 7 carrying the steel reinforcement cage 3 moves along the longitudinal rails on the top of the trolley to the steel reinforcement cage mounting trolley 6 on the second arc-shaped rail 12 on the trolley (the steel reinforcement cage mounting trolley 6 needs to be moved to the middle position of the top of the second arc-shaped rail 12, i.e. the receiving position in advance), the lifting arm 74 of the longitudinal moving trolley 7 is lowered, the steel reinforcement cage 3 is placed on the steel reinforcement cage mounting trolley 6, and the steel reinforcement cage mounting trolley 6 grasps and fixes the steel reinforcement cage 3, completing the receiving; then the steel reinforcement cage mounting trolley 6 transports the steel reinforcement cage along the second arc-shaped rail 12 to the designated position (i.e. the preliminary positioning); then, the steel reinforcement cage mounting trolley 6 adjusts the six degrees of freedom of the steel reinforcement cage, i.e. the longitudinal movement, deflection, radial movement, overturning, pitching and circumferential movement (i.e. the fine positioning), so that the steel reinforcement cage is accurately installed to the target installation position of the top surface of the tunnel (the steel reinforcement cage needs to be manually fixed).

[0064] Step 6: repeat steps 3-5 to install the next section of steel reinforcement cage on the bracket.

[0065] As a preferred solution, further, two steel reinforcement cage mounting trolleys 6 are arranged on the second arc-shaped rail 12, during construction, the first steel reinforcement cage mounting trolley 6 is used to receive and install the B section steel reinforcement cage 31 (see the attached Figure 15 ), while the B section steel reinforcement cage is being installed, the second steel reinforcement cage mounting trolley 6 receives the D section steel reinforcement cage and sends it to the installation position, after the installation of the B section steel reinforcement cage is completed, the first steel reinforcement cage mounting trolley 6 receives the C section steel reinforcement cage, and then the C section steel reinforcement cage 32 and the D section steel reinforcement cage 33 are installed at the same time (see the attached Figure 16 ).

[0066] Step 7: after the installation of the two groups of BCD section steel reinforcement cages is completed, the lower lifting bracket 9 is lowered to the ground material transport vehicle, and the ground material transport vehicle carries the empty bracket 9 and drives away.

[0067] For ease of description, spatially relative terms, such as "upper", "lower", "left", "right", "rear", "front", "rearward", "forward", "up", "down", "under", "above", "horizontal", "vertical", "top", "bottom", "lateral", "longitudinal", "front", "rear", "clockwise", "counter clockwise", "interior", "exterior", "radial", "peripheral", "axial", "toward", "away from" and the like, can be used herein for the purpose of illustration and description. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation, in addition to the orientations depicted in the figures. For example, if a device described herein is turned over, elements described as "under" or "beneath" other elements or features would then be oriented "over" or "above" the other elements or features. Thus, the exemplary term "under" can encompass both an orientation of over and under. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0068] Also, the terms "first", "second", and the like, do not necessarily have to have any actual meaning or significance, but are merely used to distinguish one element from another.

[0069] The foregoing description of the application has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the application to the precise form disclosed. Many modifications and variations are possible in light of this disclosure. It is intended that the scope of the application be limited not with this detailed description, but rather by the claims appended hereto.

Claims

1. A construction method for installing segmented steel reinforcement cages at the top of a tunnel, characterized in that, Includes the following steps: Step 1: The ground material transport vehicle carries the bracket containing the steel cage and drives it to the area under the trolley; Step 2: Use the winch on the trolley to hoist the bracket on the ground material transport vehicle to the steel cage storage area of ​​the trolley; Step 3: The hoist trolley on the first arc track of the trolley lifts the top layer of the steel cage on the bracket. After lifting it to a height higher than the ventilation pipe, the hoist trolley moves the steel cage to the middle position below the first arc track. Then, the construction workers rotate the steel cage from longitudinal to transverse. Step 4: The longitudinal transfer trolley on the trolley moves along the longitudinal track on the top of the trolley to the bottom of the horizontally positioned steel cage lifted by the hoist trolley. The hoist trolley is then disconnected from the steel cage, so that the horizontally positioned steel cage is placed on the lifting arm of the longitudinal transfer trolley. Step 5: The longitudinal transfer trolley carrying the rebar cage moves along the longitudinal track on the top of the trolley to the rebar cage installation trolley on the second arc track on the trolley. The lifting arm of the longitudinal transfer trolley lowers, placing the rebar cage on the rebar cage installation trolley. The rebar cage installation trolley grabs and fixes the rebar cage, completing the material receiving. Then, the rebar cage installation trolley transports the rebar cage along the second arc track to the designated position. Then, the rebar cage installation trolley adjusts the rebar cage in six degrees of freedom: longitudinal movement, deflection, radial movement, flipping, pitching, and circumferential movement, so that the rebar cage is accurately installed at the target installation position on the tunnel roof. Step 6: Repeat steps 3-5 to install the next section of the steel cage on the bracket.

2. The construction method for installing segmented steel reinforcement cages at the top of the tunnel according to claim 1, characterized in that: The trolley includes a trolley body, with a first arc-shaped track and a second arc-shaped track on the top of the trolley body. The area below the first arc-shaped track of the trolley body is designated as a rebar cage storage area, which is used to accommodate brackets. Winches for hoisting brackets are installed on both sides of the rebar cage storage area. A hoist trolley is installed on the first arc-shaped track to provide hoisting and transportation functions for the rebar cages. A rebar cage installation trolley is installed on the second arc-shaped track to grab the rebar cages and transport them to the designated installation position on the tunnel roof. A longitudinal transfer trolley is installed on the trolley body to transport the rebar cages hoisted by the hoist trolley to the rebar cage installation trolley.

3. The construction method for installing segmented steel reinforcement cages at the top of the tunnel according to claim 1, characterized in that: In step 1, each bracket supports three stacked longitudinal steel cages. These three steel cages are three segmented steel cages to be installed on the tunnel roof, namely: segment B steel cage, segment C steel cage and segment D steel cage.

4. The construction method for installing segmented steel reinforcement cages at the top of the tunnel according to claim 3, characterized in that: Two steel cage installation trolleys are set on the second arc track. During construction, the first steel cage installation trolley is used to receive and install the steel cage section B. At the same time as the steel cage section B is installed, the second steel cage installation trolley receives the steel cage section D and delivers it to the installation position. After the steel cage section B is installed, the first steel cage installation trolley receives the steel cage section C, and then the steel cage sections C and D are installed simultaneously.

5. The construction method for installing segmented steel reinforcement cages at the top of the tunnel according to claim 1, characterized in that: The curvature of the first and second arc-shaped tracks is consistent with the curvature of the tunnel top surface. The first and second arc-shaped tracks are set at intervals, and the upper surfaces of both the first and second arc-shaped tracks are provided with teeth.

6. The construction method for installing segmented steel reinforcement cages at the top of a tunnel according to claim 1, characterized in that: The longitudinal transfer trolley is installed on the longitudinal track at the middle position of the top of the trolley body, and can move longitudinally. The height of the longitudinal transfer trolley is less than the height of the first arc track, so that the longitudinal transfer trolley can pass through the first arc track.

7. The construction method for installing segmented steel reinforcement cages at the top of the tunnel according to claim 2, characterized in that: The main frame of the trolley body includes a lower gantry and an upper gantry. The middle left area of ​​the upper gantry is used to accommodate two ventilation pipes side by side, and the right area of ​​the upper gantry serves as the storage area for the rebar cage. A longitudinal rail is set at the top center of the upper gantry for the longitudinal transport trolley to move. A staircase is also set on the trolley body for construction personnel to go up and down. Guide tubes for ventilation pipes are set at both ends of the trolley body. The first arc-shaped rail is installed on the upper gantry, and the second arc-shaped rail is installed on the lower gantry. The height of the first arc-shaped rail is greater than the height of the second arc-shaped rail.

8. The construction method for installing segmented steel reinforcement cages at the top of a tunnel according to claim 1, characterized in that: The bottom end of the hoist trolley's lifting rope is connected to a hanging frame, which is arc-shaped and has multiple hooks spaced apart.

Images