CN109812280B

CN109812280B - Clear water template trolley for constructing side wall structure inside shield tunnel

Info

Publication number: CN109812280B
Application number: CN201910004260.9A
Authority: CN
Inventors: 蒋林千; 谷平; 肖晓春; 凌宇锋; 秦海峰
Original assignee: Shanghai Tunnel Engineering Co Ltd
Current assignee: Shanghai Tunnel Engineering Co Ltd
Priority date: 2019-01-03
Filing date: 2019-01-03
Publication date: 2021-04-27
Anticipated expiration: 2039-01-03
Also published as: CN109812280A

Abstract

The invention relates to a clear water template trolley for constructing a side wall structure in a shield tunnel, which comprises: the top of the movable frame body unit is provided with an operating platform, and the bottom of the movable frame body unit is provided with a travelling space; the adjustable suspension system is arranged on the operating platform; the template is hung on the suspension system, and the setting position of the template can be adjusted through the suspension system; and a shoring system shored on the outer side of the template. The clear water formwork trolley disclosed by the invention utilizes a steel structure connection principle, all formwork supports are connected into a whole, the effect of integral movement is realized through the movable frame body unit, the clear water formwork trolley has the functions of integral formwork assembling and disassembling and moving, the labor force is reduced, and the loss of materials in the process of block assembling and disassembling is avoided. The clear water template trolley improves the construction efficiency, the installation performance, the splicing effect, the pouring quality, the civilized construction level and the linear control.

Description

Clear water template trolley for constructing side wall structure inside shield tunnel

Technical Field

The invention relates to the field of tunnel engineering, in particular to a clear water template trolley for constructing a side wall structure inside a shield tunnel.

Background

The construction engineering development has so far made the design and construction of formwork support systems required for the cast-in-place of vertical structures relatively mature. At present, the most common in China is made of different types of template materials such as bamboo plywood wood molds, P1050 small steel molds and the like, the back support systems of the templates are all battens or section steels, and pull rods playing a fastening role comprise supports used for climbing operation, such as steel pipe fastener type supports, bowl buckle type supports, socket type supports and the like. According to the actual working condition, the formworks, the back supports, the pull rods and the supports in different forms are matched and combined in a partitioning mode, and finally the pouring construction condition is met.

The state also develops relevant specifications and calculation formulas for the construction and acceptance of the formwork support system: the construction and acceptance criteria of concrete structural engineering (GB50204-2015), the design and construction operation rules of the fastener type steel pipe template support (QJ/STEC 002-: 1) erecting a bracket; 2) assembling templates; 3) mounting a back support system; 4) fastening the pull rod; 5) pouring and maintaining concrete; 6) dismantling the pull rod; 7) dismantling the back support; 8) removing the template; 9) and (4) dismantling the bracket.

The construction of the existing formwork support system has the following disadvantages:

1) the construction efficiency is low: the conventional formwork support system has the defects of long time and long time consumption and low construction efficiency due to the limitation of concrete curing time and complicated construction steps, and a large amount of repeated operation exists in the formwork turnover process, especially the formwork turnover of a certain amount of formworks under a large-area wall body. Meanwhile, the template and the bracket are damaged in the whole process of manual dismantling, stacking, carrying and erecting for many times, and the cost is high.

2) The safety performance is poor: in the process of erecting and dismantling the formwork support, the support erecting and dismantling and climbing operation is involved, and certain safety risk exists. In addition, in the shield tunnel with various cross operations, personnel insertion, material stacking and vehicle simultaneous coexistence exist, and the influence on traffic safety is large.

3) The assembly efficiency is low: the formwork fastening mode of the wall body generally adopts counter-pulling, but the steel bars of clear water are generally designed according to the structural form of the shear wall, the steel bars are dense, particularly in the range of sharp curves, the normal direction of the formwork and the pull rod cannot be perpendicular, and even the counter-pulling cannot be realized due to the obstruction of the steel bars. In the project, the facing is clear water (without holes), and the position of the tie rod still needs to be repaired in the later period. The efficiency of template assembly is greatly reduced in the process.

4) The pouring quality is low: compared with a common concrete wall body, pouring of a clear water structure is layered and uniform, but pouring under a conventional formwork support system can only be matched with a conventional concrete pump truck, and the condition that workers can have good matching degree with the pump truck in a no-pipe state is difficult to ensure, and pouring quality is difficult to ensure.

5) The civilized construction level is low: the disordered stacking of working face materials, the uneven arrangement of personnel and the traffic jam of construction vehicles are normal phenomena under the construction of the conventional formwork support system scheme. The civilized construction level is difficult to be improved.

6) The linear control is difficult: aiming at the overall perception of the long-distance tunnel in the driving process, cicada seams (seams among templates) are not too much, so that the clear water structure is suitable for adopting a large-scale template. But different from the conventional small templates, the assembly of the large template is difficult to meet under the manpower condition, and the assembly quality precision is low, so that the linear fitting is very difficult.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, provides a clear water formwork trolley for constructing an internal side wall structure of a shield tunnel, and solves the problems of low construction efficiency, poor safety performance, low splicing effect, low pouring quality, low civilized construction level, difficult linear control and the like in the construction of the conventional formwork support system.

The technical scheme for realizing the purpose is as follows:

the invention provides a clear water template trolley for constructing a side wall structure inside a shield tunnel, which comprises:

the top of the movable frame body unit is provided with an operating platform, and the bottom of the movable frame body unit is provided with a travelling space;

the adjustable suspension system is arranged on the operating platform;

the template is hung on the suspension system, and the setting position of the template can be adjusted through the suspension system; and

and the top support system is supported on the outer side of the template.

The clear water formwork trolley disclosed by the invention utilizes a steel structure connection principle, all formwork supports are connected into a whole, the effect of integral movement is realized through the movable frame body unit, the clear water formwork trolley has the functions of integral formwork assembling and disassembling and moving, the labor force is reduced, and the loss of materials in the process of block assembling and disassembling is avoided. The clear water template trolley improves the construction efficiency, the installation performance, the splicing effect, the pouring quality, the civilized construction level and the linear control.

The invention is further improved in that the suspension system comprises:

the sliding beam is fixedly arranged at the bottom of the operating platform;

the first direction adjusting piece is arranged on the sliding beam in a sliding mode and can move and adjust along a first direction;

the second direction adjusting piece is arranged on the first direction adjusting piece in a sliding mode and can move and adjust along a second direction perpendicular to the first direction;

a sling rotatably connected to the second direction adjustment member;

the connecting piece hung on the hanging piece can move and be adjusted along a third direction perpendicular to the first direction and the second direction, and the connecting piece is connected with the template.

The invention further provides a clear water template trolley for constructing a side wall structure in a shield tunnel, which is characterized in that the periphery of the outer side surface of a template is provided with a frame plate, the frame plate is arranged in an inclined manner, when two adjacent templates are spliced, an adjusting gap is formed between the frame plates which are butted with each other and positioned on the outer side of the template, and the curve radian of the inner side surfaces of the two adjacent templates can be adjusted through the adjusting gap.

The clear water template trolley for constructing the side wall structure in the shield tunnel is further improved in that the frame body unit comprises oppositely arranged stand columns and cross beams fixedly arranged at the tops of the stand columns, a platform plate is laid on the cross beams to form the operating platform, the stand columns and the cross beams enclose to form the travelling space, and pulleys are arranged at the bottoms of the stand columns.

The invention is used for constructing the clear water template trolley of the side wall structure in the shield tunnel and further improves the clear water template trolley, which also comprises a track laid in the tunnel;

the pulley of stand bottom is located in the slip on the track to through a actuating mechanism drive the pulley is followed the track removes, thereby has realized the removal of support body unit.

The invention further provides a clear water formwork trolley for constructing a side wall structure in a shield tunnel, which is characterized in that the jacking system comprises a first jacking stay rod and a second jacking stay rod, the first jacking stay rod is jacked between the frame body unit and the corresponding formwork, the second jacking stay rod is jacked between the inner wall of the tunnel and the corresponding formwork, and the lengths of the first jacking stay rod and the second jacking stay rod are adjustable.

The clear water template trolley for constructing the side wall structure in the shield tunnel further comprises a reinforcing member which is arranged at the root part of the template relatively close to the frame body unit, and the reinforcing member partially protrudes out of the root part of the corresponding template and is connected with the corresponding structure in the tunnel through a drawknot.

The clear water template trolley for constructing the side wall structure in the shield tunnel further comprises a pulling piece connected with the frame body unit and the corresponding structure in the tunnel through a pulling knot.

The invention is further improved by comprising a distributing machine fixedly arranged on the operating platform.

Drawings

Fig. 1 and 2 are schematic structural diagrams of the clear water formwork trolley for constructing the inner side wall structure of the shield tunnel in the construction of the tunnel segment.

Fig. 3 is a structural schematic diagram of cloth in the clear water formwork trolley construction process for constructing the inner side wall structure of the shield tunnel.

Fig. 4 is a schematic structural view of another angle of the clear water form trolley for constructing the inner side wall structure of the shield tunnel according to the present invention.

Fig. 5 is a schematic perspective view of the clear water form trolley for constructing the inner side wall structure of the shield tunnel according to the present invention, with the segment portion omitted.

Fig. 6 is a side view of the clear water form trolley for constructing the inner side wall structure of the shield tunnel according to the present invention.

Fig. 7 is a schematic structural diagram of the straight surface spliced by the formworks in the clear water formwork trolley for constructing the side wall structure inside the shield tunnel according to the invention.

Fig. 8 is a schematic structural diagram of the formwork in the clear water formwork trolley for constructing the inner side wall structure of the shield tunnel, which is spliced into a curved surface.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

Referring to fig. 1, the present invention provides a clean water form trolley for constructing a side wall structure inside a shield tunnel. The whole building effect of the round tunnel and the particularity of the driving operation safety are comprehensively considered, in the double-layer tunnel adopting the ultra-large slurry-air balance shield with the diameter of 15.56m for tunneling, the tunnel decoration environment is omitted, the fair-faced concrete is introduced into the side walls on the two sides of the lower lane of the internal structure, and the fair-faced formwork trolley and the material distributor are matched to form a complete construction equipment system, so that the pouring construction of the fair-faced concrete side walls is realized. The clear water formwork trolley combines the components of each formwork support and the like into a whole by utilizing a steel structure connection principle, has the integral formwork assembling and disassembling function and the moving function, forms a formwork trolley system, reduces labor force, and avoids material loss in the block assembling and disassembling process. When the clear water formwork trolley is used for construction, a small sample experiment is carried out, multiple types of formworks are selected for concrete small sample pouring, and the formworks with the optimal scheme are selected according to the requirements of actual working conditions on the strength, the rigidity and the tolerance of the formworks. The method comprises the steps of generating a preliminary structural drawing of the clear water trolley by means of a three-dimensional view of a BIM technology, wherein the preliminary structural drawing comprises a template assembly operation surface, a pouring platform, a travelling channel and other region partitions, and clear water synchronous construction is achieved under the condition that multiple operations such as a shield and a structure in a tunnel coexist. Analyzing technical parameters such as template size modulus, trolley section modulus and the like through a computer AUTOCAD drawing technology, summarizing the whole, and selecting an optimal scheme by combining the standard size of the market steel. The linear shape of the sharp curve of the tunnel is fully fitted, and the appearance is attractive. And by combining a PLC traffic guidance system, vehicles in the clear water trolley region are constructed to run at the same time, so that the construction safety is ensured. The clear water form jumbo for constructing the inner side wall structure of the shield tunnel according to the present invention will be described with reference to the accompanying drawings.

Referring to fig. 1, a schematic structural diagram of the clear water form trolley for constructing the inner side wall structure of the shield tunnel in the tunnel segment according to the present invention is shown. Referring to fig. 5, a schematic perspective view of the clear water form jumbo for constructing the inner side wall structure of the shield tunnel according to the present invention after a segment portion is omitted in the construction is shown, and the structure of the clear water form jumbo for constructing the inner side wall structure of the shield tunnel according to the present invention will be described with reference to fig. 1 and 5.

As shown in fig. 1 and 5, the clean water form trolley 30 for constructing a side wall structure inside a shield tunnel according to the present invention includes a movable frame unit 31, a suspension system 32, a form 33, and a top bracing system 34, wherein an operation platform 311 is formed at the top of the movable frame unit 31, a traffic space 312 is formed at the bottom of the movable frame unit, and an operation surface is provided for construction through the operation platform 311, so that a constructor can stand on the operation platform 311 to construct the side wall structure inside the tunnel. The arrangement of the traveling space 312 ensures that when the frame unit 31 is arranged in the segment 10 of the tunnel, the transportation vehicles required for shield tunneling can pass through, and the synchronous construction of the clear water side wall and the shield tunneling is realized. The suspension system 32 is installed on the operation platform 311, and the suspension system 32 is an adjustable structure; the template 33 is hung on the suspension system 32, the arrangement position of the template 33 can be adjusted through the suspension system 32, the adjustment of the suspension system 32 is utilized to realize the adjustment of the front-back, left-right and up-down movement and the clockwise and counterclockwise rotation of the template 33, and the adjustment of various degrees of freedom of the template 33 is realized; the shoring system 34 is shored on the outer side of the formwork 33, and the formwork 33 is fixed through the shoring system 34, so that a space for pouring a side wall structure is formed between the two oppositely arranged formworks 33.

According to the clear water formwork trolley, the formwork is hung on the operation platform through the hanging system, the position of the formwork is adjusted through the hanging system so as to meet construction requirements, the movable frame body unit is used for driving the formwork to integrally move, turnover in the construction process is convenient, and construction time can be greatly saved.

As a preferred embodiment of the present invention, referring to fig. 5 and 6, the suspension system 32 includes a sliding beam 321 fixed at the bottom of the operation platform 311, a first direction adjusting member 322 slidably disposed on the sliding beam 321, a second direction adjusting member 323 slidably disposed on the first direction adjusting member 322, a lifting member 324 rotatably connected to the second direction adjusting member 323, and a connecting member hung on the lifting member 324, wherein the first direction adjusting member 322 can move and adjust along a first direction, the second direction adjusting member 323 can move and adjust along a second direction perpendicular to the first direction, and the lifting member 324 can rotate and adjust to realize the clockwise and counterclockwise adjustment of the template 33; the connecting piece can move and adjust along a third direction perpendicular to the first direction and the second direction, and the connecting piece is connected with the template. The template can be adjusted in any direction in a three-dimensional space through adjustment of the first direction, the second direction and the third direction, and rotation adjustment of any angle of the template is achieved through rotation adjustment so as to meet the curve design of a side wall structure.

Specifically, the sliding beam 321 is provided with a first bar-shaped groove along a first direction (i.e., the arrangement direction of the sliding beam 321), the first direction adjusting member 322 is slidably arranged in the first bar-shaped groove, and the position adjustment along the first direction is realized by sliding along the first bar-shaped groove; the top of first direction regulating part 322 is equipped with rotationally first pivot, and this first pivot passes first bar groove and has set firmly the gyro wheel corresponding first bar groove, and the gyro wheel can roll along first bar groove to the position control of first direction regulating part 322 has been realized. Preferably, two sliding beams 321 are arranged in parallel, and both ends of the first direction adjusting component 322 are slidably arranged in the corresponding first linear grooves on the corresponding sliding beams 321 through the first rotating shaft and the roller. The arrangement direction of the first direction adjusting piece 322 is perpendicular to the arrangement direction of the sliding beam 321, a second strip-shaped groove along a second direction (namely the arrangement direction of the first direction adjusting piece 322) is formed in the first direction adjusting piece 322, the second direction adjusting piece 323 is arranged in the second strip-shaped groove in a sliding manner, and position adjustment along the second direction is realized by sliding along the second strip-shaped groove; the top of second direction regulating part 323 is equipped with rotationally second pivot, and this second pivot passes second bar groove and has set firmly the pulley corresponding to the second bar groove, and the pulley can rotate along the second bar groove to the position control of second direction regulating part 323 has been realized. The bottom of second direction regulating part 323 is equipped with the mounting panel that is located first direction regulating part 322 below, and hoist and mount piece 324 rotationally connects on the mounting panel, preferably, has seted up the mounting hole on the mounting panel, and the top of hoist and mount piece 324 is equipped with the installation axle, and the installation axle passes the mounting hole and connects a cardboard, and the pad is established and the sliding plate between cardboard and mounting panel to make the installation axle can realize freely rotating and can not break away from the mounting panel. In order to facilitate the rotation driving of the installation shaft, a first gear is fixedly arranged on the installation shaft and meshed with a second gear, the second gear is driven by a driving motor to rotate so as to drive the first gear to rotate, the forward and reverse rotation of the installation shaft can be realized by utilizing the forward and reverse rotation of the driving motor, and the rotation regulation of the hoisting piece 324 is realized. In a preferred embodiment, the connecting member is a chain block, one end of the chain block is fixed on the hoisting frame 324, and the other end of the chain block is connected with a hoisting point on the template, so that the template can move up and down in a vertical manner through manual operation. In another preferred embodiment, the connecting member is a rope; hoist and mount piece 324 is the triangle-shaped support body, the installation axle sets firmly in the contained angle department at triangle-shaped support body top, a fixed pulley is installed to two contained angle departments in addition of triangle-shaped support body, a template is connected through two ropes, two ropes from two directions walk around behind two fixed pulleys with hoisting point fixed connection on the template, the other end and the hoist engine fixed connection of two ropes, the motion through the hoist engine realizes receiving and releasing of rope, thereby realized that the template reciprocates along vertical direction (also the third direction). Preferably, the first direction coincides with the direction of the tunnel.

As another preferred embodiment of the present invention, as shown in fig. 7 and 8, the edge frame plate 331 is disposed on the periphery of the outer side surface of the formwork 33, and the edge frame plate 331 is disposed in an inclined shape, when two adjacent formworks 33 are spliced, an adjusting gap 332 is formed between the edge frame plates 331 that are abutted against each other on the outer side of the formwork 33, and the curvature of the inner side surface of the two adjacent formworks can be adjusted by adjusting the gap 332. When the end of the frame plates 331 away from the form 33 is inclined toward the inner side of the form 33, i.e., when the two forms 33 are butted, the ends of the two frame plates 331 away from the form 33 are spaced apart, so that the adjustment gap 332 is formed between the two frame plates 331.

Due to the inclined arrangement of the frame plates 331, when the templates 33 are butted, the inner side surfaces of the two templates 33 can be subjected to position adjustment, the maximum adjustment range is that the two frame plates 331 are attached to each other, and therefore the curve section of the side wall structure can be fitted. The butt connection of the formworks 33 is performed by fixedly connecting the adjacent side frame plates 331. Preferably, the frame plates 331 are provided with positioning pin holes, and the two frame plates 331 are fixedly connected by the positioning pins and the insertion pieces.

Further, set up the mounting groove on the frame board 331, it has the sealing strip to fill in the mounting groove, and when template 33 splices, the sealing strip between two adjacent frame boards 331 hugs closely mutually and seals up the clearance between two frame boards 331, and then seals up the concatenation seam of two templates 33, improves clear water concrete side wall structure 13's veneer effect.

Preferably, a steel die is used as the template 33, a 6mm austenitic stainless steel plate (SUS304) is used as a face plate of the template 33, a steel plate is used as the frame plate 331, the steel plate and the face plate are welded and fixed, and welding stress and deformation of the steel die are released by a vibrator when the template 33 is manufactured.

As another preferred embodiment of the present invention, as shown in fig. 4 and 5, the frame body unit 31 includes upright posts 313 arranged oppositely and a cross beam 314 fixed on the tops of the upright posts 313, a platform plate 315 is laid on the cross beam 314, the platform plate 315 forms an operating platform 311, a driving space 312 is formed between the upright posts 313 and the cross beam 314, a pulley 316 is arranged at the bottom of the upright posts 313, and the movement adjustment of the frame body unit 31 is realized through the pulley 316. The upright column 313 and the cross beam 314 are connected to form a door-shaped frame body, support is provided for the template, and the template is integrally moved. To improve the structural strength of the frame unit 31, diagonal braces are further connected between the vertical columns 313 and the cross beams 314 in a diagonal tie-in manner.

Further, a rail 35 is laid in the tunnel, a pulley 316 at the bottom of the upright 313 is slidably disposed on the rail 35, and the pulley 316 is driven by a driving mechanism to move along the rail 35, thereby moving the frame unit 31.

Specifically, the rail 35 is an i-shaped rail, and the middle of the pulley 316 is recessed and clamped on a flange plate at the top of the i-shaped rail, so that the pulley 316 can move directionally along the i-shaped rail. The bottom of the upright column 313 is fixedly provided with a connecting beam which is consistent with the arrangement direction of the track 35, and the bottom of the connecting beam is provided with a plurality of pulleys 316, so that the overall stability of the frame body unit 31 is improved.

A travelling space 312 for travelling is arranged between the two upright columns 313, the outer sides of the upright columns 313 are spaces for hanging the templates 33, and the upright columns 313 can avoid a transformer box required by power supply in the tunnel, so that the clear water side wall structure and shield tunneling can be constructed synchronously. The suspension systems 32 are fixedly arranged at both ends of the cross beam 314 so that the construction space of the formwork is located outside the two uprights 313, i.e. outside the traffic space 312.

Preferably, the length of the frame unit 31 is 30m, the total length of the formwork is 34m, the formwork is formed by splicing 5 units, and two adjacent formworks are hinged to each other, including 3 formworks of 6m and 3 formworks of 8 m.

As another preferred embodiment of the present invention, as shown in fig. 5 and 6, the supporting system 34 includes a first supporting rod 341 supported between the frame unit 31 and the corresponding formwork 33 and a second supporting rod 342 supported between the inner wall of the tunnel and the corresponding formwork 33, and the lengths of the first supporting rod 341 and the second supporting rod 342 are adjustable. After the formwork 33 is adjusted in place by the suspension system 32, the lengths of the first and second

top struts

341 and 342 are adjusted to firmly support the formwork 33, so that the quality of the cast bare concrete sidewall structure 13 can be ensured.

Further, in order to protect the inner wall surface of the segment 10 from being damaged, the end of the second support bar 342 is provided with a flexible pad attached to the inner wall surface of the segment 10, and the segment 10 is protected by the flexible pad. In order to improve the overall structural strength of the second top support bar 342, a reinforcing bar is connected between the plurality of second top support bars 342 in a pulling and knotting manner.

Still further, in order to improve the stability of the formwork 33, the tunnel further includes a reinforcement 36 disposed at the root of the formwork 33 relatively close to the frame unit 31, and the reinforcement 36 partially protrudes out of the root of the corresponding formwork 33 and is connected with the corresponding structure in the tunnel by a tie. Before constructing the side wall structure 113, the guide wall 12 is constructed on the base plate 11 in the duct piece 10 at a position corresponding to the side wall structure 113, tie bars are pre-embedded on the guide wall 12, and the reinforcing member 36 is tied and fixed by the tie bars, so that part of the reinforcing member 36 is attached to the outer side surface of the template 33, and part of the reinforcing member is tied and fixed with the tie bars, thereby improving the structural strength of the root part of the template 33 and ensuring the forming quality of concrete.

Still further, a pulling member 37 is included to be coupled to the frame unit 31 and the corresponding structure in the tunnel. For improving the stability of the frame unit 31, the structure corresponding to the frame unit 31 in the tunnel is tied and fixed by the tie member 37, so that the frame unit 31 can be prevented from shaking or sliding due to the moving function, and the influence on the construction of the side wall structure can be avoided. The embedded parts are preset at the corresponding positions of the guide walls 12, and after the frame body unit 31 moves in place, the pulling pieces 37 are fixedly connected with the corresponding embedded parts, so that the movement of the frame body unit 31 is limited, and the stability of the frame body unit 31 is improved. Preferably, the pulling element 37 is a basket rod with a length adjustment function.

As shown in fig. 1 to 3, further comprises a material distributor 23 fixed on the operation platform 311. Arranging the material distributor 23 on the operation platform 311 can ensure that the side wall structure 13 is poured uniformly, and improve the forming quality of the side wall structure 13. The pump truck 21 and the tank truck 22 used in cooperation with the material distributor 23 can both run into the duct piece 10 of the tunnel and pass through the running space 312, clear water in the tank truck 22 is pumped to the material distributor 23 through the pump truck 21, and the material distributor 23 distributes the clear water concrete into the pouring space between the corresponding templates 33, so that the side wall structure 13 is formed after the clear water concrete is solidified.

The following describes a process of constructing the side wall structure 13 using the clean water form trolley 30 provided by the present invention.

As shown in fig. 1 and 2, a guide wall 12 is constructed on a bottom plate 11 in a duct piece 10, a side wall structure 13 to be constructed is positioned on the guide wall 12, reserved steel bars are reserved on the guide wall 12, side wall steel bars 131 are constructed on the reserved steel bars, and the side wall steel bars 131 and the reserved steel bars are connected and fixed; then moving the clear water template trolley 30 to a set position, or when in primary use, pushing the trolley 30 to the interior of the duct piece 10, after the trolley 30 is moved to the proper position, fixing the trolley 30 by using a pulling piece 37, then adjusting the position of the template 33 by using a suspension system 32, so that the template 33 is clamped on two sides of the side wall steel bar 131, arranging transverse and longitudinal ribs on the outer side of the template 33, and propping and fixing the corresponding transverse and longitudinal ribs by a propping system, so that the template 33 is propped and fixed on two sides of the side wall steel bar 131, when the state of the template 33 is adjusted, if the corresponding side wall structure 13 is a curve section, enabling the template 33 to be adapted to the curve radian of the curve section by rotating a hoisting piece 324, after the template 33 is fixed, driving the tank truck 22 and the pump truck 21 into the duct piece 10 in combination with the illustration of fig. 3, then pumping the clear water in the tank truck 22 to the material distributor 23 by using the pump truck 21, the clear water concrete is poured into the space between the formworks 33 through the distributing machine 23, after the demolding requirement is met, the top support of the top support system 34 is removed, then the formworks 33 are moved to be separated from the side wall structure 13, then the connection of the tie pieces 37 is removed, the frame body unit 31 is moved to the next section of construction area, and the construction of the next section of side wall structure is carried out.

In the construction process, the BIM technology is used for simulating the total clear water construction flow, synchronous construction can be realized under the condition that multiple operations such as shield construction, structure and the like coexist in the tunnel through the simulated construction of the BIM technology, and the problem that actual construction can be predicted can be simulated in advance so as to be solved in advance.

In order to verify the applicability and reliability of the clear water formwork trolley, the front 6 sections (containing curve sections) with the total length of 138m are selected in the tunnel to be subjected to experimental pouring, the experimental pouring is used as experience accumulation of subsequent structure manufacturing, and meanwhile, the overall light sensing effect of the clear water concrete construction process is shown by combining light, box holes and fireproof paint required by design. The quality acceptance data of nearly 2000m show that all indexes of the clear water side wall meet the design requirements, and particularly all indexes such as flatness, angle line straightness and open seam straightness are improved by one stage on the basis of the original specification. The specific measured data are as follows:

bare concrete side wall quality acceptance result table

The clear water template trolley has the beneficial effects that:

the construction efficiency is improved: the template selects a large stainless steel die with high precision and is provided with a driving system to realize the integral moving function.

The safety performance is improved: the two sides and the top are construction operation spaces for separating construction vehicles from personnel working faces.

The splicing effect is improved: the template assembly adopts the integral die assembly fixation in the form of 'butt support' instead of 'split' mode.

The pouring quality is improved: and the material distributor is utilized to strictly control the layering and the uniform pouring of the wall bodies on the two sides.

And (3) improving civilized construction: the gate-shaped channel is arranged to reasonably induce traffic organization, ensure the traffic of construction vehicles and realize synchronous construction with shield tunneling.

The linear beauty is improved: the 'groove' form and the angle adjustment of the large steel die with multi-directional freedom degree adjustment at the joint can fit different sharp curves of the tunnel.

The bare concrete is introduced into the structure of the underground expressway for the first time, so that the link of tunnel decoration is omitted;

the method is characterized in that the bare concrete is applied to the inner structure of the oversized shield tunnel, the matching property of shield tunneling is considered, and certain experience reference is provided;

the synchronous construction of the internal side wall structure is realized by developing a special template trolley system, and the safety and the civilized construction level of multi-species vertical crossing operation in a closed space are greatly improved;

promote the improvement of the whole level of underground passage engineering concrete construction and quality management.

While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.

Claims

1. A clear water template trolley for constructing a side wall structure inside a shield tunnel is characterized by comprising:

the adjustable suspension system is arranged on the operating platform;

a shoring system shored on the outer side of the template;

the suspension system includes:

the sliding beam is fixedly arranged at the bottom of the operating platform;

a sling rotatably connected to the second direction adjustment member;

the connecting piece hung on the hanging piece can move and adjust along a third direction perpendicular to the first direction and the second direction, and is connected with the template;

the number of the sliding beams is two, and a first strip-shaped groove arranged along a first direction is formed in each sliding beam;

two ends of the first direction adjusting piece are arranged in a first strip-shaped groove on the corresponding sliding beam in a sliding mode through a first rotating shaft and a roller wheel, and the first rotating shaft penetrates through the first strip-shaped groove and is fixedly provided with the roller wheel corresponding to the first strip-shaped groove;

the first direction adjusting piece is provided with a second strip-shaped groove arranged along a second direction;

the top of the second direction adjusting piece is provided with a rotatable second rotating shaft, and the second rotating shaft penetrates through the second strip-shaped groove and is fixedly provided with a pulley corresponding to the second strip-shaped groove;

the bottom of second direction regulating part is equipped with and is located the mounting panel of first direction regulating part below, hoist and mount rotatable connect in the mounting panel, the mounting hole has been seted up on the mounting panel, the top of hoist and mount piece is equipped with the installation axle, the installation axle passes the mounting hole and connects a cardboard, the cardboard with the pad is equipped with the sliding plate between the mounting panel, install the epaxial first gear that has set firmly, first gear meshes with a second gear mutually, through driving motor drive the second gear is rotatory and can drive first gear is rotatory, utilizes driving motor's positive and negative rotation can realize the rotation in the same direction as, anticlockwise of installation axle to the rotation of hoist and mount piece is adjusted has been realized.

2. The clear water form trolley for constructing the inner side wall structure of the shield tunnel according to claim 1, wherein the outer side of the forms is provided with a frame plate at the periphery, the frame plate is arranged in an inclined manner, when two adjacent forms are spliced, an adjusting gap is formed between the frame plates which are butted with each other at the outer side of the forms, and the curvature of the inner side of the two adjacent forms can be adjusted through the adjusting gap.

3. The clear water form trolley for constructing the inner side wall structure of the shield tunnel according to claim 1, wherein the frame body unit comprises oppositely arranged upright posts and cross beams fixedly arranged at the tops of the upright posts, platform plates are laid on the cross beams to form the operating platform, the upright posts and the cross beams enclose to form the travelling space, and pulleys are arranged at the bottoms of the upright posts.

4. The clear water form jumbo for constructing a shield tunnel internal side wall structure of claim 3, further comprising a track laid in the tunnel;

5. The clean water form trolley for constructing an internal side wall structure of a shield tunnel according to claim 1, wherein the shoring system comprises a first shoring bar shored between the frame unit and the corresponding form and a second shoring bar shored between the inner wall of the tunnel and the corresponding form, and the lengths of the first and second shoring bars are adjustable.

6. The clear water form trolley for constructing the inner side wall structure of the shield tunnel according to claim 1, further comprising a reinforcement member disposed at a root portion of the form disposed relatively close to the frame unit, the reinforcement member partially protruding out of a root portion of the corresponding form and being drawknot-connected to a corresponding structure in the tunnel.

7. The clean water form trolley for constructing the inner side wall structure of the shield tunnel according to claim 1, further comprising a tie member which is connected to the frame unit and the corresponding structure in the tunnel.

8. The clear water form trolley for constructing the inner side wall structure of the shield tunnel according to claim 1, further comprising a material distributor fixed on the operation platform.