Construction method of lining trolley of tunnel widening section at bridging tunnel of complex intercommunication area

Abstract

The invention relates to a construction method of a lining trolley of a tunnel widening section at a bridging tunnel of a complex intercommunication area, which adopts a combined lining formwork trolley with adjustable height and length, can be flexibly adjusted according to the change of the section of the tunnel, and can quickly adjust the overall height and width of the lining trolley, so that the construction efficiency is improved. The purpose that one lining trolley can conduct secondary lining on lining sections with different heights and widening sections is achieved, the construction efficiency is greatly improved, the construction cost is reduced, meanwhile, the occupied construction space can be reduced, and remarkable economic benefits are achieved; a foldable middle supporting leg structure is adopted as a middle supporting structure, so that the structural stability of the trolley is guaranteed, and the safety of lining construction of a widening section is improved; and the unit type module design is adopted, and the construction progress is accelerated through simple and convenient disassembly and assembly cooperation.

Description

Technical Field

[0001] The invention belongs to the field of civil engineering, and in particular relates to a construction method of a lining trolley for a tunnel widening section at a bridge-tunnel in a complex interchange area. Background Art

[0002] The secondary lining of the tunnel is mostly a reinforced concrete structure. The secondary lining construction mostly uses a formwork trolley to pour concrete. The space behind the formwork trolley is narrow, and the binding process of the secondary lining steel bars is very complicated. There is a significant cross-influence between the various processes, which leads to an extension of the construction period and affects the construction quality.

[0003] For tunnel engineering, since the space of the tunnel is standard, the size of the template trolley is also fixed. Therefore, when a long tunnel needs to set up an emergency parking strip, it is generally necessary to widen the outside of the driving strip. Conventional template trolleys are difficult to adapt to the construction of the widening section of the tunnel. Therefore, it is necessary to add additional bracket templates on the outside of the template and change the outer contour of the template to apply to the widening section. After the widening section is completed, the additional brackets and templates must be removed, which prolongs the construction process and makes the process more complicated. The traditional tunnel secondary lining construction adopts reinforced concrete structure and uses lining template trolleys for pouring concrete. The space behind the trolley is small and the steel bar binding process is complicated. Therefore, the cross-influence between the types of work is large, the construction period is long, and the construction quality is difficult to control. In addition, since the outer contour of the template trolley is fixed, the template trolley generally needs to add bracket templates on the outside of the template to widen it in the curved widening section of the tunnel, the emergency parking strip and other sections where the inner contour section changes. The construction process is time-consuming and the process is very complicated.

[0004] During the secondary lining construction of tunnel projects, how to overcome the inherent defects of the formwork trolley cast-in-place concrete construction technology - the formwork trolley has a fixed cross-sectional size and is difficult to adapt to the ever-changing construction section requirements. This has become a difficult problem that urgently needs to be solved in the current tunnel construction field. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a construction method for a lining trolley for a tunnel widening section at a bridge tunnel in a complex interchange area.

[0006] The construction method of the lining trolley for the tunnel widening section at the bridge-tunnel in the complex interchange area comprises the following steps:

[0007] Step 1: The middle platform and the end platform are assembled to form a trolley platform by adjusting the width sliding mechanism device;

[0008] Step 2: Install the trolley column on the end platform and weld the L-shaped hanging plate at the bottom of the end platform; install the support leg structure at the bottom of the middle platform and rotate the bottom support leg to place it in the L-shaped hanging plate;

[0009] Step 3: Assemble the unitized formwork structure, and install adjusting jack adjustment rods between adjacent units;

[0010] Step 4: Install the oblique adjustment jack and the vertical adjustment jack on the trolley platform, and support the unit formwork structure through the rods;

[0011] Step 5: Adjust the width sliding mechanism and the jack adjustment rod to adjust the width and height of the trolley.

[0012] Preferably, the width adjustment sliding mechanism is arranged in the cavity of the middle platform and the end platform, including a fixed seat of the middle platform, a sliding chain, a fixed seat of the end platform, a telescopic jack support rod, a telescopic jack and a support rod; a fixed seat of the end platform is provided in the inner end cavity of the end platform, and a support rod is provided in the middle of the inner side of the fixed seat of the end platform; fixed seats of the middle platform are symmetrically arranged in the end cavities at both ends of the middle platform, and a telescopic jack support rod is provided in the middle of the inner side of the fixed seat of the middle platform; a telescopic jack is provided at the end of the fixed seat of the end platform, and the telescopic jack is connected to the telescopic jack support rod.

[0013] Preferably, in step one, the left end of the middle platform extends into the interior of the left end platform, a fixed seat of the middle platform is welded inside the middle platform, and sliding chains are respectively provided at the top and bottom of the left end of the middle platform, and the sliding chain slides along the interior of the left end platform under the adjustment of the telescopic jack; the right end platform extends into the right end of the middle platform, a fixed seat is welded inside the end platform, and sliding chains are respectively provided at the top and bottom of the left end of the right end platform, and the sliding chain slides along the interior of the right end of the middle platform under the adjustment of the telescopic jack; at the same time, adjust the telescopic jack to a suitable position, and then fix the middle platform to the end platforms on both sides.

[0014] Preferably, the trolley column includes a bottom column, a lifting jack, a support column and wheels; the bottom column is arranged at the bottom of the end platform, a lifting jack is provided at the lower part of the bottom column, the other end of the lifting jack is connected to the support column, and wheels are installed at the bottom of the support column through a cavity; a transverse beam is provided at the bottom of the end platform between the bottom columns.

[0015] Preferably, the support leg structure includes a lifting rod, a bolt, a rotating support, a connecting rod, an upper support leg, an adjusting jack and a bottom support leg; the rotating support is symmetrically arranged on both sides of the center of the bottom of the middle platform, the connecting rod is connected by bolts and pins, one end of the connecting rod is connected to the upper support leg, the bottom of the upper support leg is connected to a support column, an adjusting jack is provided between the lifting rod and the support column, the lifting rod is connected to the bottom support leg, and a wheel is provided in the bottom cavity of the bottom support leg; a groove cavity is provided at the bottom of the rotating support, the rotating bearing is placed in the groove cavity, the bolts pass through the rotating support and the rotating bearing in sequence, and four connecting rods are provided under the rotating bearing.

[0016] Preferably, an L-shaped hanging plate is welded at the center of the bottom of the end platform; the rotating support is welded at the center of the bottom of the middle platform, and the rotating bearing is fixed to the rotating support, and the upper support leg is connected to the bottom support leg; at the same time, the adjusting jack is adjusted to the appropriate position, and then the bottom support leg is placed in the L-shaped hanging plate.

[0017] Preferably, bottom longitudinal ribs, middle longitudinal ribs and top longitudinal ribs are welded in sequence at the bottom of the lower template unit, the middle template unit and the upper template unit; lower transverse ribs and upper transverse ribs are welded between the bottom longitudinal ribs, between the middle longitudinal ribs and between the top longitudinal ribs respectively; an adjusting jack adjusting rod is installed between the upper transverse rib of the lower template unit and the lower transverse rib at the bottom of the middle template unit, an adjusting jack adjusting rod is installed between the upper transverse rib at the top of the middle template unit and the lower transverse rib at the bottom of the upper template unit, an oblique adjusting jack is provided in the center of the adjusting jack adjusting rod, and ear plates are welded on the lower transverse ribs and the upper transverse ribs in sequence.

[0018] Preferably, in step four, a support rod is installed on the side of the transverse beam, a telescopic fixing sleeve is provided in the center of the support rod, an end base and a middle base are respectively installed on the top of the end platform, and an adjustment base is installed on the top of the middle platform; an oblique adjustment jack and a vertical adjustment jack are installed on the end base, and a vertical adjustment jack is respectively installed on the top of the middle base and the adjustment base; the oblique adjustment jack is connected with an oblique adjustment rod, and the vertical adjustment jack is connected with the vertical adjustment rod; the middle base and the adjustment base are respectively provided with vertical adjustment jacks on the top, and the vertical adjustment jack is connected with a vertical support rod; adjust the telescopic fixing sleeve, the oblique adjustment jack and the vertical adjustment jack to the appropriate position, and then connect the oblique adjustment rod, the vertical adjustment rod and the vertical support rod to the ear plate.

[0019] As a preferred method, when adjusting the height at the widening part of the tunnel at the bridge tunnel in the complex interchange area, the telescopic fixing sleeve, the oblique adjustment jack, the vertical adjustment jack, the lifting jack and the oblique adjustment jack are started; under the action of the lifting jack, the bottom column rises against the end platform, thereby driving the entire trolley platform to move upward; under the action of the vertical adjustment jack, the middle template unit slides along the lower template unit, and under the action of the oblique adjustment jack, the oblique adjustment rod contracts, pulling the middle template unit to slide obliquely upward ; Under the action of the oblique adjustment jack, the adjustment rod of the adjustment jack moves against the lower transverse rib of the middle formwork unit, thereby pulling the middle formwork unit to slide obliquely upward; the adjustment rod of the adjustment jack moves against the lower transverse rib of the upper formwork unit, thereby pulling the upper formwork unit to move upward; at the same time, under the action of the vertical adjustment jack, the vertical adjustment rod will move upward against the middle formwork unit, and the vertical support rod will move upward against the middle formwork unit and the upper formwork unit; the support rod is lengthened under the action of the telescopic fixing sleeve and the bottom column.

[0020] As a preferred method, when adjusting the width at the widening part of the tunnel at the bridge tunnel in the complex interchange area, the telescopic fixed sleeve, telescopic jack, adjustment jack, oblique adjustment jack, vertical adjustment jack and oblique adjustment jack are started; under the action of the telescopic jack, the support rod pushes the fixed seat of the left middle platform to slide to the left, and at the same time drives the sliding chain to move, so that the middle platform moves to the left along the inside of the end platform; under the action of the telescopic jack, the telescopic jack support rod pushes the fixed seat of the right end platform to slide to the left, and at the same time drives the sliding chain to move, so that the end platform moves along The interior of the middle platform moves to the left; under the action of the oblique adjustment jack on the right, the oblique adjustment rod on the right pushes the middle formwork unit on the right to move to the left front; under the action of the oblique adjustment jack on the right, the adjustment rod of the adjustment jack pulls the lower cross rib of the upper formwork unit to move, and then pulls the upper formwork unit to move to the left front; at the same time, under the action of the vertical adjustment jack, the vertical adjustment rod pushes the middle formwork unit on the right to move to the left front, and the vertical support rod pushes the middle formwork unit and the upper formwork unit to move to the left front; under the action of the telescopic fixing sleeve and the bottom column, the right support rod is compressed.

[0021] The beneficial effects of the present invention are:

[0022] 1) The telescopic and adjustable combined lining trolley technology adopted in the present invention can change the width and height of the trolley according to the tunnel size, ensuring the continuity of the working face construction and overcoming the defect that the template trolley is difficult to apply to the construction of variable-section tunnels during the traditional tunnel secondary lining construction process.

[0023] 2) The height- and length-adjustable combined lining formwork trolley adopted in the present invention can be flexibly adjusted according to the changes in the tunnel cross-section, and the overall height and width of the lining trolley can be quickly adjusted, so that a lining trolley can perform secondary lining on lining sections of different heights and variable widths, which greatly improves the construction efficiency, reduces the project cost, and at the same time reduces the occupation of construction space, with significant economic benefits.

[0024] 3) The height- and length-adjustable combined lining formwork trolley of the present invention adopts a foldable middle supporting leg structure as the middle supporting structure, thereby ensuring the structural stability of the trolley and improving the safety of the variable width section lining construction.

[0025] 4) The retractable and adjustable lining formwork trolley in the present invention adopts a unit module design, which speeds up the construction progress through simple and convenient disassembly and assembly collaboration, avoids large-scale assembly in the narrow space in the tunnel, and ensures the safe and efficient construction of the lining of the tunnel widening section at the bridge tunnel in the complex interchange area. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional schematic diagram of the lining trolley for the tunnel widening section at the bridge-tunnel in the complex interchange area;

[0027] Figure 2 This is a schematic elevation diagram of the lining trolley for the tunnel widening section at the bridge-tunnel in the complex interchange area;

[0028] Figure 3 It is the elevation view of the internal structure of the lining trolley in the tunnel widening section at the bridge-tunnel in the complex interchange area;

[0029] Figure 4 It is a three-dimensional schematic diagram of the lining trolley of the tunnel widening section at the bridge tunnel in the complex interchange area;

[0030] Figure 5 It is a three-dimensional schematic diagram of the internal structure of the lining trolley of the tunnel widening section at the bridge tunnel in the complex interchange area;

[0031] Figure 6 It is a three-dimensional schematic diagram of the internal framework;

[0032] Figure 7 is a three-dimensional schematic diagram of the telescopic support legs viewed from above;

[0033] Figure 8 is a three-dimensional schematic diagram of the telescopic support legs when viewed from above;

[0034] Fig. 9 It is a detailed structural diagram of the left side of the width adjustment platform;

[0035] Fig.10 It is a schematic diagram of the detailed structure on the right side of the width adjustment platform.

[0036] Description of the accompanying drawings: 1-lower template unit, 2-telescopic fixing sleeve, 3-joining seam, 4-end base, 5-ear plate, 6-oblique adjustment rod, 7-oblique adjustment jack, 8-vertical adjustment rod, 9-middle template unit, 10-vertical adjustment jack, 11-middle base, 12-vertical support rod, 13-upper template unit, 14-adjustment base, 15-middle platform, 16-fixed seat of middle platform, 17-jointing seam, 18-sliding chain, 19-fixed seat of end platform, 20-support rod, 21-telescopic jack support rod, 22-lifting rod, 23-support column, 24-telescopic jack, 25-support rod, 26-bolt, 27-rotating support, 28-pin, 29-connecting rod, 30-upper supporting leg, 31-adjusting jack, 32-bottom supporting leg, 33-L-shaped hanging plate, 34-end platform, 35-bottom column, 36-lifting jack, 37-support column, 38-wheel, 39-adjusting jack adjustment rod, 40-oblique adjusting jack, 41-lower transverse rib, 42-reserved hole, 43-groove cavity, 44-upper notch, 45-transverse beam, 46-rotating bearing, 47-lower notch, 48-bottom longitudinal rib, 49-middle longitudinal rib, 50-top longitudinal rib, 51-upper transverse rib. DETAILED DESCRIPTION

[0037] The present invention is further described below in conjunction with embodiments. The description of the following embodiments is only used to help understand the present invention. It should be noted that for ordinary persons in the art, without departing from the principle of the present invention, the present invention can also be modified in some ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0038] Embodiment 1

[0039] As an embodiment, the construction method of the tunnel widening section lining trolley at the bridge tunnel in the complex interchange area includes the following steps:

[0040] Step 1: Customize structural accessories:

[0041] The lower formwork unit 1, the middle formwork unit 9, the upper formwork unit 13 and their accessories are customized in the factory, and components such as the sliding chain 18, the rotating support 27, and the rotating bearing 46 are manufactured.

[0042] Step 2: Assemble the trolley platform structure:

[0043] The middle platform 15 and the end platforms 34 on both sides are assembled into a whole. Specifically, the left end of the middle platform 15 extends into the interior of the left end platform 34, and a fixing seat 16 of the middle platform is welded inside the middle platform 15. Sliding chains 18 are respectively provided at the top and bottom of the left end of the middle platform 15, and the sliding chain 18 can slide along the inside of the left end platform 34 under the adjustment of the telescopic jack 24; the right end platform 34 extends into the right end of the middle platform 15, and a fixing seat 19 is welded inside the end platform 34, and sliding chains 18 are respectively provided at the top and bottom of the left end of the right end platform 34, and the sliding chain 18 can slide along the inside of the right end of the middle platform 15 under the adjustment of the telescopic jack 24; at the same time, adjust the telescopic jack 24 to a suitable position, and then fix the middle platform 15 to the end platforms 34 on both sides.

[0044] Step 3: Install the lower structure of the trolley:

[0045] The bottom column 35 and the transverse beam 45 are installed in sequence at the lower part of the end platform 34. Specifically, the lower part of the bottom column 35 is connected to the jacking jack 36, and the jacking jack 36 is arranged on the top of the support column 37. The transverse beam 45 is welded to the bottom of the edge of the end platform 34, and an L-shaped hanging plate 33 is welded at the center of the bottom of the end platform 34.

[0046] Step 4: Install the foldable and adjustable support leg structure:

[0047] A foldable and adjustable support leg structure is installed in the center of the bottom of the middle platform 15. Specifically, the rotating support 27 is welded to the center of the bottom of the middle platform 15, and the rotating bearing 46 is fixed to the rotating support 27, and the upper support leg 30 is connected to the bottom support leg 32; at the same time, the adjusting jack 31 is adjusted to a suitable position, and then the bottom support leg 32 is placed in the L-shaped hanging plate 33.

[0048] Step 5: Assembly of the trolley unit template:

[0049] The lower formwork unit 1, the middle formwork unit 9 and the upper formwork unit 13 are hoisted to suitable positions in sequence by a crane for assembly. At the same time, the bottom longitudinal ribs 48, the middle longitudinal ribs 49 and the top longitudinal ribs 50 are welded in sequence at the bottom of the lower formwork unit 1, the middle formwork unit 9 and the upper formwork unit 13; at the same time, the lower transverse ribs 41 and the upper transverse ribs 51 are welded between the bottom longitudinal ribs 48, the middle longitudinal ribs 49 and the top longitudinal ribs 50 respectively; an adjusting jack adjusting rod 39 is installed between the upper transverse rib 51 of the lower formwork unit 1 and the lower transverse rib 41 at the bottom of the middle formwork unit 9, and an adjusting jack adjusting rod 39 is installed between the upper transverse rib 51 at the top of the middle formwork unit 9 and the lower transverse rib 41 at the bottom of the upper formwork unit 13. An oblique adjusting jack 40 is provided in the center of the adjusting jack adjusting rod 39, and ear plates 5 are welded on the lower transverse ribs 41 and the upper transverse ribs 51 in sequence.

[0050] Step 6: Install the bracket structure:

[0051] A support rod 20 is installed on the side of the transverse beam 45, and the end base 4 and the middle base 11 are respectively installed on the top of the end platform 34, and the adjustment base 14 is installed on the top of the middle platform 15; an oblique adjustment jack 7 and a vertical adjustment jack 10 are installed on the end base 4, and a vertical adjustment jack 10 is respectively installed on the top of the middle base 11 and the adjustment base 14; at the same time, the telescopic fixing sleeve 2, the oblique adjustment jack 7, and the vertical adjustment jack 10 are adjusted to the appropriate position, and then the oblique adjustment rod 6, the vertical adjustment rod 8, the vertical support rod 12, and the end of the support rod 20 are fixed to the ear plate 5.

[0052] Step 7: Lay the running track and transport the trolley to the designated location:

[0053] The trolley running track is laid on the tunnel floor, and then the assembled combined lining formwork trolley with adjustable height and length is transported to the widening part of the tunnel at the bridge tunnel in the complex interchange area and temporarily fixed.

[0054] Embodiment 2

[0055] As another embodiment, this embodiment 2 proposes, on the basis of the embodiment 1, a more specific construction method of a lining trolley for a tunnel widening section at a bridge tunnel in a complex interchange area:

[0056] When adjusting the height at the widening part of the bridge tunnel in the complex interchange area, the telescopic fixing sleeve 2, the oblique adjustment jack 7, the vertical adjustment jack 10, the lifting jack 36, and the oblique adjustment jack 40 are started; under the action of the lifting jack 36, the bottom column 35 will push the end platform 34 to the market, thereby driving the entire trolley platform to move upward; under the action of the vertical adjustment jack 10, the middle template unit 9 will slide along the inside of the lower template unit 1, and at the same time, under the action of the oblique adjustment jack 7, the oblique adjustment rod 6 will contract, thereby pulling the middle template unit 9 to slide obliquely upward; at the same time, under the action of the oblique adjustment jack 40, the adjustment The jack adjustment rod 39 will move against the lower transverse rib 41 of the middle template unit 9, thereby pulling the middle template unit 9 to slide diagonally upward; similarly, under the action of the oblique adjustment jack 40, the adjustment jack adjustment rod 39 will move against the lower transverse rib 41 of the upper template unit 13, thereby pulling the upper template unit 13 to move upward; at the same time, under the action of the vertical adjustment jack 10, the vertical adjustment rod 8 will move against the middle template unit 9 upward, and the vertical support rod 12 will move against the middle template unit 9 and the upper template unit 13 upward; under the action of the telescopic fixing sleeve 2 and the bottom column 35, the support rod 20 will be stretched and fixed when it reaches the appropriate position.

[0057] When adjusting the width at the widening part of the bridge tunnel in the complex interchange area, the telescopic fixed sleeve 2, the telescopic jack 24, the adjustment jack 31, the oblique adjustment jack 7, the vertical adjustment jack 10, and the oblique adjustment jack 40 are started; under the action of the telescopic jack 24, the support rod 25 slides to the left against the fixed seat 16 of the left middle platform, and at the same time drives the sliding chain 18 to move, so that the middle platform 15 moves to the left along the inside of the end platform 34; at the same time, under the action of the telescopic jack 24, the telescopic jack support rod 21 slides to the left against the fixed seat 19 of the right end platform, and at the same time drives the sliding chain 18 to move, so that the end platform 34 moves to the left along the inside of the middle platform 15 Movement; under the action of the oblique adjustment jack 7 on the right, the oblique adjustment rod 6 on the right pushes the middle template unit 9 on the right to move to the left front; at the same time, under the action of the oblique adjustment jack 40 on the right, the adjustment jack adjustment rod 39 will pull the lower cross rib 41 of the upper template unit 13 to move, and then pull the upper template unit 13 to move to the left front; at the same time, under the action of the vertical adjustment jack 10, the vertical adjustment rod 8 will push the middle template unit 9 on the right to move to the left front, and the vertical support rod 12 will push the middle template unit 9 and the upper template unit 13 to move to the left front; under the action of the telescopic fixing sleeve 2 and the bottom column 35, the right support rod 20 will be compressed, and when it reaches the appropriate position, it will be fixed.

[0058] By moving the combined lining formwork trolley with adjustable height and length, the lining construction of the tunnel widening section at the bridge tunnel in the complex interchange area is carried out section by section until the lining construction of the entire widening section of the tunnel is completed, and then steam curing is carried out.

[0059] It should be noted that the parts in this embodiment that are the same or similar to those in the first embodiment can be referenced to each other and will not be described in detail in this application.

[0060] Embodiment 3

[0061] As an embodiment, this embodiment 3 is based on the embodiments 1 and 2. Figures 1 to 10 As shown, the lining trolley for the widening section of the tunnel at the bridge tunnel in the complex interchange area includes a lower template unit 1, a telescopic fixed sleeve 2, a joint seam 3, an end base 4, an ear plate 5, an oblique adjustment rod 6, an oblique adjustment jack 7, a vertical adjustment rod 8, a middle template unit 9, a vertical adjustment jack 10, a middle base 11, a vertical support rod 12, an upper template unit 13, an adjustment base 14, a middle platform 15, a fixed seat 16 of the middle platform, a joint seam 17, a sliding chain 18, a fixed seat 19 of the end platform, a support rod 20, a telescopic jack support rod 21, a lifting rod 22, and a support column. 23, telescopic jack 24, support rod 25, bolt 26, rotating support 27, pin 28, connecting rod 29, upper supporting leg 30, adjusting jack 31, bottom supporting leg 32, L-shaped hanging plate 33, end platform 34, bottom column 35, lifting jack 36, supporting column 37, wheel 38, adjusting jack adjustment rod 39, oblique adjusting jack 40, lower transverse rib 41, reserved hole 42, groove cavity 43, upper notch 44, transverse beam 45, rotating bearing 46, lower notch 47, bottom longitudinal rib 48, middle longitudinal rib 49, top longitudinal rib 50, upper transverse rib 51;

[0062] It includes: a unit formwork structure, a trolley column with adjustable height, a trolley platform with adjustable width, a foldable and adjustable supporting leg structure, and a width-adjusting sliding mechanism device;

[0063] The unit formwork structure is mainly composed of a lower formwork unit 1, a middle formwork unit 9, and an upper formwork unit 13. The lower formwork unit 1 and the middle formwork unit 9 are assembled as a whole at the joint 3, and the middle formwork unit 9 and the upper formwork unit 13 are assembled as a whole; the middle formwork unit 9 adopts a folding design at the joint 3 with the lower formwork unit 1 and the upper formwork unit 13 respectively. Specifically, one end of the middle formwork unit 9 extends into the bottom cavity of the lower formwork unit 1, and the other end of the middle formwork unit 9 extends into the bottom cavity of the upper formwork unit 13.

[0064] like Figure 7 and Figure 8As shown, the height-adjustable trolley column is arranged at the corner of the end platform 34 of the trolley, and comprises: a bottom column 35, a lifting jack 36, a support column 37, and a wheel 38; the bottom column 35 is arranged at the bottom of the end platform 34, and a lifting jack 36 is provided at the lower part of the bottom column 35, and the other end of the lifting jack 36 is connected to the support column 37, and a wheel 38 is provided in the bottom cavity of the support column 37.

[0065] like Figure 2 and Figure 3 As shown, the trolley platform with adjustable width is arranged on the top of the trolley column with adjustable height, which includes: a middle platform 15 and an end platform 34; the middle platform 15 and the end platform 34 are assembled into a whole at the joint 17. Specifically, the middle platform 15 and the end platform 34 adopt a folding and interlocking design at the joint 17, and the left end of the middle platform 15 extends into the cavity of the left end platform 34, and the left end of the right end platform 34 extends into the cavity of the right end of the middle platform 15. The end platforms 34 are symmetrically arranged at both ends of the middle platform 15.

[0066] like Figure 4 As shown, the foldable and adjustable support leg structure is symmetrically arranged at the bottom center of the middle platform 15, and comprises: a lifting rod 22, a support column 23, a bolt 26, a rotating support 27, a pin 28, a connecting rod 29, an upper support leg 30, an adjustment jack 31, a bottom support leg 32, and a wheel 38; the rotating support 27 is symmetrically arranged on both sides of the bottom center of the middle platform 15, the connecting rod 29 is connected by bolts 26 and pins 28, and the other end of the connecting rod 29 is connected to the upper support leg 30, the bottom of the upper support leg 30 is connected to the support column 23, an adjusting jack 31 is arranged between the lifting rod 22 and the support column 23, the lifting rod 22 is connected to the bottom support leg 32, and a wheel 38 is arranged in the bottom cavity of the bottom support leg 32.

[0067] like Figure 3 , Fig. 9 and Fig.10As shown, the width adjustment sliding mechanism device is arranged in the cavity of the middle platform 15 and the end platform 34, which includes: a fixed seat 16 of the middle platform, a sliding chain 18, a fixed seat 19 of the end platform, a telescopic jack support rod 21, a telescopic jack 24, and a support rod 25; a fixed seat 19 is provided in the inner end cavity of the end platform 34, and a support rod 25 is provided in the middle of the inner side of the fixed seat 19; the fixed seats 16 of the middle platform are symmetrically arranged in the end cavities at both ends of the middle platform 15, the sliding chains 18 are respectively provided at the top and bottom of the inner side of the fixed seat 16 of the left middle platform, and a telescopic jack support rod 21 is provided in the middle of the inner side of the fixed seat 16 of the middle platform; a telescopic jack 24 is provided at the end of the fixed seat 19, and the telescopic jack 24 is connected to the telescopic jack support rod 21, and the sliding chains 18 are respectively provided at the top and bottom of the inner side of the fixed seat 19 on the right.

[0068] Embodiment 4

[0069] As another embodiment, this embodiment 4 proposes, on the basis of the embodiment 3, a more specific tunnel widening section lining trolley at the bridge tunnel in the complex interchange area:

[0070] like Figure 5 and Figure 6 As shown, the bottom cavity of the lower template unit 1 is provided with multiple rows of bottom longitudinal ribs 48, the bottom cavity of the middle template unit 9 is provided with multiple rows of middle longitudinal ribs 49, the bottom cavity of the upper template unit 13 is provided with multiple rows of top longitudinal ribs 50, lower transverse ribs 41 and upper transverse ribs 51 are provided between the bottom longitudinal ribs 48 and between the bottoms of the middle longitudinal ribs 49, upper transverse ribs 51 are provided between the tops of the middle longitudinal ribs 49, lower transverse ribs 41 are provided between the bottoms of the top longitudinal ribs 50, and multiple rows of ear plates 5 are provided at the bottoms of the lower transverse ribs 41 and the upper transverse ribs 51 respectively; multiple rows of adjusting jack adjusting rods 39 are provided between the upper transverse ribs 51 of the lower template unit 1 and the lower transverse ribs 41 at the bottom of the middle template unit 9, multiple rows of adjusting jack adjusting rods 39 are provided between the upper transverse ribs 51 at the top of the middle template unit 9 and the lower transverse ribs 41 at the bottom of the upper template unit 13, and an oblique adjusting jack 40 is provided in the center of the multiple rows of adjusting jack adjusting rods 39.

[0071] An end base 4 is provided at the top of the edge of the end platform 34, a middle base 11 is provided at the top of the inner side of the end platform 34, and an adjustment base 14 is symmetrically provided at the top of the middle platform 15; an oblique adjustment jack 7 and a vertical adjustment jack 10 are provided at the top of the end base 4, the oblique adjustment jack 7 is connected to the oblique adjustment rod 6, and the vertical adjustment jack 10 is connected to the vertical adjustment rod 8; vertical adjustment jacks 10 are respectively provided at the top of the middle base 11 and the adjustment base 14, and the vertical adjustment jacks 10 are connected to the vertical support rod 12.

[0072] The bottom of the rotating support 27 is provided with a groove cavity 43, and the rotating bearing 46 is placed in the groove cavity 43. The bolt 26 passes through the reserved holes of the rotating support 27 and the rotating bearing 46 in turn, and is then fastened with a pin 28. Four connecting rods 29 are provided below the rotating bearing 46.

[0073] The top and bottom of the upper supporting leg 30 are respectively provided with an upper notch 44 and a lower notch 47, and the top of the bottom supporting leg 32 is provided with a reserved hole 42; the other end of the connecting rod 29 extends into the upper notch 44 and is connected to the top of the upper supporting leg 30, one end of the supporting column 23 extends into the lower notch 47 and is connected to the bottom of the upper supporting leg 30, and the other end of the supporting column 23 is connected to the adjusting jack 31, and a lifting rod 22 is provided below the adjusting jack 31, and the other end of the lifting rod 22 extends into the reserved hole 42 and is connected to the bottom supporting leg 32.

[0074] A transverse beam 45 is provided at the bottom of the end platform 34 between the bottom columns 35, and multiple rows of support rods 20 are provided on the side of the transverse beam 45, and a telescopic fixing sleeve 2 is provided in the center of the support rod 20; the oblique adjustment rod 6, the vertical adjustment rod 8, the vertical support rod 12, and the ends of the support rod 20 are connected to the ear plate 5; an L-shaped hanging plate 33 is provided in the center of the bottom of the end platform 34, and the bottom supporting leg 32 is placed on the L-shaped hanging plate 33.

[0075] It should be noted that the parts in this embodiment that are the same or similar to those in Embodiment 3 can be referenced to each other and will not be described in detail in this application.

[0076] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

Claims

1. A construction method for a tunnel widening section lining trolley at a complex interchange area bridge tunnel, characterized in that: The following steps are involved: Step 1: The middle platform and the end platform are assembled to form a trolley platform by adjusting the width sliding mechanism device; Step 2: Install the trolley column on the end platform and weld the L-shaped hanging plate at the bottom of the end platform; install the support leg structure at the bottom of the middle platform and rotate the bottom support leg to place it in the L-shaped hanging plate; Step 3: Assemble the unitized formwork structure, and install adjusting jack adjustment rods between adjacent units; Step 4: Install the oblique adjustment jack and the vertical adjustment jack on the trolley platform, and support the unit formwork structure through the rods; Step 5: Adjust the width sliding mechanism and the jack adjustment rod to adjust the width and height of the trolley.

2. The construction method of the tunnel widening section lining trolley at the complex interchange area bridge tunnel according to claim 1 is characterized in that: The width adjustment sliding mechanism is arranged in the cavity of the middle platform and the end platform, including a fixed seat of the middle platform, a sliding chain, a fixed seat of the end platform, a telescopic jack support rod, a telescopic jack and a support rod; the inner end cavity of the end platform is provided with a fixed seat of the end platform, and a support rod is provided in the middle of the inner side of the fixed seat of the end platform; the fixed seats of the middle platform are symmetrically arranged in the end cavities at both ends of the middle platform, and a telescopic jack support rod is provided in the middle of the inner side of the fixed seat of the middle platform; the end of the fixed seat of the end platform is provided with a telescopic jack, and the telescopic jack is connected to the telescopic jack support rod.

3. The construction method of the tunnel widening section lining trolley at the complex interchange area bridge tunnel according to claim 2 is characterized in that: In step one, the left end of the middle platform extends into the interior of the left end platform, a fixed seat of the middle platform is welded inside the middle platform, and sliding chains are respectively provided at the top and bottom of the left end of the middle platform, and the sliding chain slides along the interior of the left end platform under the adjustment of the telescopic jack; the right end platform extends into the right end of the middle platform, a fixed seat is welded inside the end platform, and sliding chains are respectively provided at the top and bottom of the left end of the right end platform, and the sliding chain slides along the interior of the right end of the middle platform under the adjustment of the telescopic jack; at the same time, adjust the telescopic jack to a suitable position, and then fix the middle platform to the end platforms on both sides.

4. The construction method of the tunnel widening section lining trolley at the complex interchange area bridge tunnel according to claim 1 is characterized in that: The trolley column includes a bottom column, a lifting jack, a support column and wheels; the bottom column is arranged at the bottom of the end platform, a lifting jack is arranged at the lower part of the bottom column, the other end of the lifting jack is connected to the support column, and wheels are installed at the bottom of the support column through a cavity; a transverse beam is arranged between the bottom columns at the bottom of the end platform.

5. The construction method of the tunnel widening section lining trolley at the complex interchange area bridge tunnel according to claim 1 is characterized in that: The support leg structure includes a lifting rod, a bolt, a rotating support, a connecting rod, an upper supporting leg, an adjusting jack and a bottom supporting leg; the rotating support is symmetrically arranged on both sides of the center of the bottom of the middle platform, the connecting rod is connected by bolts and pins, one end of the connecting rod is connected to the upper supporting leg, and a supporting column is connected to the bottom of the upper supporting leg. An adjusting jack is arranged between the lifting rod and the support column, the lifting rod is connected to the bottom supporting leg, and a wheel is arranged in the bottom cavity of the bottom supporting leg; a groove cavity is arranged at the bottom of the rotating support, and a rotating bearing is placed in the groove cavity. The bolts pass through the rotating support and the rotating bearing in turn, and four connecting rods are arranged under the rotating bearing.

6. The construction method of the tunnel widening section lining trolley at the complex interchange area bridge tunnel according to claim 5 is characterized in that: Weld an L-shaped hanging plate at the center of the bottom of the end platform; weld the rotating support at the center of the bottom of the middle platform, and fix the rotating bearing to the rotating support, and connect the upper support leg to the bottom support leg; at the same time, adjust the jack to the appropriate position, and then place the bottom support leg in the L-shaped hanging plate.

7. The construction method of the tunnel widening section lining trolley at the complex interchange area bridge tunnel according to claim 1 is characterized in that: The bottom longitudinal ribs, middle longitudinal ribs and top longitudinal ribs are welded in sequence at the bottom of the lower template unit, the middle template unit and the upper template unit; the lower transverse ribs and upper transverse ribs are welded between the bottom longitudinal ribs, between the middle longitudinal ribs and between the top longitudinal ribs respectively; an adjusting jack adjusting rod is installed between the upper transverse rib of the lower template unit and the lower transverse rib at the bottom of the middle template unit, an adjusting jack adjusting rod is installed between the upper transverse rib at the top of the middle template unit and the lower transverse rib at the bottom of the upper template unit, an oblique adjusting jack is provided in the center of the adjusting jack adjusting rod, and ear plates are welded on the lower transverse ribs and the upper transverse ribs in sequence.

8. The construction method of the tunnel widening section lining trolley at the complex interchange area bridge tunnel according to claim 7 is characterized in that: In step 4, a support rod is installed on the side of the transverse beam, a telescopic fixing sleeve is provided in the center of the support rod, the end base and the middle base are respectively installed on the top of the end platform, and the adjustment base is installed on the top of the middle platform; an oblique adjustment jack and a vertical adjustment jack are installed on the end base, and a vertical adjustment jack is installed on the top of the middle base and the adjustment base; the oblique adjustment jack is connected with an oblique adjustment rod, and the vertical adjustment jack is connected with the vertical adjustment rod; the middle base and the adjustment base are respectively provided with vertical adjustment jacks on the top, and the vertical adjustment jack is connected with a vertical support rod; adjust the telescopic fixing sleeve, the oblique adjustment jack and the vertical adjustment jack to the appropriate position, and then connect the oblique adjustment rod, the vertical adjustment rod and the vertical support rod to the ear plate.

9. The construction method of the tunnel widening section lining trolley at the complex interchange area bridge tunnel according to claim 8 is characterized in that: When adjusting the height at the widening part of the tunnel at the bridge tunnel in the complex interchange area, the telescopic fixed sleeve, the oblique adjustment jack, the vertical adjustment jack, the lifting jack and the oblique adjustment jack are activated; under the action of the lifting jack, the bottom column rises against the end platform, thereby driving the entire trolley platform to move upward; under the action of the vertical adjustment jack, the middle template unit slides along the lower template unit, and under the action of the oblique adjustment jack, the oblique adjustment rod contracts, pulling the middle template unit to slide obliquely upward; Under the action of the adjusting jack, the adjusting rod of the adjusting jack moves against the lower transverse rib of the middle formwork unit, thereby pulling the middle formwork unit to slide obliquely upward; the adjusting rod of the adjusting jack moves against the lower transverse rib of the upper formwork unit, thereby pulling the upper formwork unit to move upward; at the same time, under the action of the vertical adjusting jack, the vertical adjusting rod will move upward against the middle formwork unit, and the vertical supporting rod will move upward against the middle formwork unit and the upper formwork unit; the support rod is lengthened under the action of the telescopic fixing sleeve and the bottom column.

10. The construction method of the tunnel widening section lining trolley at the complex interchange area bridge tunnel according to claim 8 is characterized in that: When adjusting the width at the widening part of the bridge tunnel in the complex interchange area, the telescopic fixed sleeve, telescopic jack, adjustment jack, oblique adjustment jack, vertical adjustment jack and oblique adjustment jack are started; under the action of the telescopic jack, the support rod pushes the fixed seat of the left middle platform to slide to the left, and at the same time drives the sliding chain to move, so that the middle platform moves to the left along the inside of the end platform; under the action of the telescopic jack, the telescopic jack support rod pushes the fixed seat of the right end platform to slide to the left, and at the same time drives the sliding chain to move, so that the end platform moves along the middle platform The inside of the platform moves to the left; under the action of the oblique adjustment jack on the right, the oblique adjustment rod on the right pushes the middle template unit on the right to move to the left front; under the action of the oblique adjustment jack on the right, the adjustment rod of the adjustment jack pulls the lower cross rib of the upper template unit to move, and then pulls the upper template unit to move to the left front; at the same time, under the action of the vertical adjustment jack, the vertical adjustment rod pushes the middle template unit on the right to move to the left front, and the vertical support rod pushes the middle template unit and the upper template unit to move to the left front; under the action of the telescopic fixing sleeve and the bottom column, the right support rod is compressed.

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