CN216043753U

CN216043753U - Liftable inverted arch template

Info

Publication number: CN216043753U
Application number: CN202121488400.3U
Authority: CN
Inventors: 张维颂; 毛成宝; 李佑福; 郑怀臣
Original assignee: Hunan Wuxin Formwork Co Ltd
Current assignee: Hunan Wuxin Formwork Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-03-15
Anticipated expiration: 2031-06-30

Abstract

The utility model discloses a liftable inverted arch template, which comprises two side templates arranged in parallel along two sides of a tunnel and a sliding frame positioned between the two side templates, wherein each side template is provided with a longitudinal rail arranged along the depth direction of the tunnel, the sliding frame is arranged on the longitudinal rail of each side template in a sliding manner, the bottom of the sliding frame is provided with a liftable inverted arch middle template, the side templates are hinged with turnover templates matched with the inverted arch middle template, and turnover mechanisms are arranged between the turnover templates and the side templates. The liftable inverted arch template disclosed by the utility model can avoid filling construction in the same longitudinal working area, is easier to implement and lower in cost, improves the construction convenience and efficiency, reduces the occupation of the longitudinal working area, is convenient to demould, and improves the construction quality, construction convenience and construction efficiency.

Description

Liftable inverted arch template

Technical Field

The utility model relates to the technical field of tunnel construction, in particular to a liftable inverted arch template.

Background

In recent years, the tunnel construction technology in China is continuously developed, and new knowledge is provided for the requirements of inverted arch construction in order to effectively improve the stability and durability of an inverted arch structure. The template for inverted arch construction is optimized from a simple single small template to a trestle bridge driving an integral type low-side wall inverted arch template, and then further to a full inverted arch template of a full inverted arch section template. The tunnel invert layer is constructed with full width invert template, and the template cost increases to a certain extent, and invert construction space is also further compressed, and when pouring the construction, the invert layer can only pour and vibrate through the work window in the below of template, can't vibrate comprehensively. In actual construction application, air bubbles are easily formed on the surface of finally-formed inverted arch concrete, primary pulp plastering and timely secondary cleaning cannot be carried out on the surface of the inverted arch layer due to arrangement of a full-width inverted arch template, and certain safety risks are accompanied when the appearance of the inverted arch layer is influenced by the air bubbles.

In the tunnel that the adaptation has the filling construction, especially has central ditch filling construction, the inverted arch template can not avoid the filling construction with vertical work interval, and the inverted arch is not convenient for the construction with filling construction in the vertical work interval of difference, will occupy two work intervals at least, has proposed higher requirement to the landing stage of inverted arch top, and the work interval of increase is great to vertical construction space influence. Moreover, the corners of the inverted arch layer are inconvenient to be plastered, so that the forming effect is poor; the inverted arch template cannot be lifted, and the demolding is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems of the prior art and provides the liftable inverted arch template which is low in cost, convenient for inverted arch construction, capable of improving tunnel construction efficiency and convenient for demoulding.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a liftable inverted arch template, includes two side form boards along tunnel both sides parallel arrangement and is located the carriage between two side form boards, each all be equipped with on the side form board along the vertical track that the tunnel depth direction was arranged, the carriage cunning is located each the side form board on the vertical track, the bottom of carriage is equipped with the intermediate template of inverted arch of liftable, on the side form board articulated have be used for with template complex upset template in the middle of the inverted arch, the upset template with be equipped with tilting mechanism between the side form board.

As a further improvement of the above technical solution:

the carriage includes the template installation department and locates the connecting portion of template installation department both sides, the top cunning of connecting portion is located on the longitudinal rail, the bottom of connecting portion with the template installation department links to each other, the middle template of invert locates on the template installation department.

The connecting part is provided with a guide roller which is arranged on the longitudinal rail in a sliding manner.

The side templates are provided with supports, and the longitudinal rails are arranged on the supports.

And a connecting beam is further arranged between the two side templates and is positioned at the front end of each side template.

And a detachable reinforcing rod is also arranged between the side template and the turnover template.

The turnover mechanism is a telescopic piece, one end of the telescopic piece is hinged with the side template, and the other end of the telescopic piece is hinged with the turnover template.

The length of the side templates along the longitudinal direction of the tunnel is longer than that of the inverted arch middle template along the longitudinal direction of the tunnel.

The liftable inverted arch template further comprises a central groove template, and the central groove template is connected with the inverted arch middle template.

And a filling end sealing die is arranged on the inverted arch middle template.

Compared with the prior art, the utility model has the beneficial effects that:

the liftable inverted arch formwork comprises two side formworks and a sliding frame positioned between the two side formworks, wherein the side formworks, the turnover formwork and an inverted arch middle formwork on the sliding frame are matched to form a profile surface required by inverted arch layer construction, longitudinal rails are fixedly arranged on the side formworks, the inverted arch middle formwork is slidably arranged on the longitudinal rails on the side formworks through the sliding frame, so that the inverted arch middle formwork can slide on the longitudinal rails in a reciprocating manner, when inverted arch layer concrete is poured, the inverted arch middle formwork can slide to leave a space, construction is more convenient, inverted arch concrete can be vibrated and compacted in time, the inverted arch concrete is vibrated and exhausted conveniently, construction quality is improved, after the intermediate inverted arch layer concrete is poured, the inverted arch middle formwork slides again, the accumulated concrete is floated and formed, meanwhile, concrete can be poured below the two side formworks, construction is very convenient and rapid, Fast, the upset template can be turned over under tilting mechanism's drive, provides floating operating space for the corner on invert layer, improves the construction quality and the shaping effect of this department, and the back has been under construction to the invert, and template roll-off invert construction area in the middle of the invert can avoid with the filling construction of vertical work interval, implements more easily, the cost is lower, has improved construction convenience and efficiency of construction, reduces the occupation of vertical work interval. And the middle template of the inverted arch can be lifted, specifically, the middle template of the inverted arch descends to be matched with the turnover templates on two sides to form a construction profile surface of the inverted arch layer, and the middle template of the inverted arch ascends to separate the middle template of the inverted arch from the poured middle inverted arch layer, so that the surface of the middle inverted arch layer is treated, demoulding is facilitated, and construction quality, construction convenience and construction efficiency are improved.

Drawings

Fig. 1 is a schematic structural diagram of an inverted arch construction of an uplifted inverted arch formwork according to the utility model.

Fig. 2 is a schematic structural view of the liftable inverted arch formwork filling construction of the present invention.

Fig. 3 is an enlarged view of a point a in fig. 1.

Fig. 4 is a schematic view showing the structures of the sliding frame and the inverted arch intermediate form in the present invention.

Fig. 5 is a top view of the liftable inverted arch form of the present invention.

Fig. 6 is a top view of the liftable inverted arch form filling work of the present invention.

The reference numerals in the figures denote: 1. a sideform; 11. turning over the template; 12. a turnover mechanism; 13. a support; 14. a reinforcing bar; 2. a carriage; 21. a template mounting section; 22. a connecting portion; 23. a guide roller; 3. a longitudinal rail; 4. an inverted arch intermediate template; 41. filling the end sealing die; 5. a connecting beam; 6. a central trench template; 7. an inverted arch layer; 8. a filling layer; 9. and (4) tunneling.

Detailed Description

The utility model is described in further detail below with reference to the figures and specific examples of the specification.

Fig. 1 to 6 show an embodiment of the liftable inverted arch form of the present invention, the liftable inverted arch form of the present embodiment includes two side forms 1 arranged in parallel along two sides of a tunnel 9 and a sliding frame 2 located between the two side forms 1, each side form 1 is provided with a longitudinal rail 3 arranged along the depth direction of the tunnel 9, the sliding frame 2 is slidably arranged on the longitudinal rail 3 of each side form 1, the bottom of the sliding frame 2 is provided with a liftable inverted arch middle form 4, the side forms 1 are hinged with a turnover form 11 for matching with the inverted arch middle form 4, and a turnover form 12 is arranged between the turnover form 11 and the side forms 1. Specifically, a telescopic oil cylinder can be arranged between the inverted arch middle template 4 and the sliding frame 2, so that the inverted arch middle template 4 can be lifted, and in other embodiments, other telescopic mechanisms can be arranged to drive the inverted arch middle template 4 to lift. The transverse direction is the width direction of the tunnel 9 and the longitudinal direction is the length direction of the tunnel 9.

The liftable inverted arch template comprises two side templates 1 and a sliding frame 2 positioned between the two side templates 1, the side templates 1, an overturning template 11 and an inverted arch middle template 4 on the sliding frame 2 are matched to form a profile surface required by construction of an inverted arch layer 7, a longitudinal rail 3 is fixedly arranged on each side template 1, the inverted arch middle template 4 is slidably arranged on the longitudinal rail 3 on each side template 1 through the sliding frame 2, so that the inverted arch middle template 4 can slide on the longitudinal rail 3 in a reciprocating manner, when the concrete of the inverted arch layer 7 is poured, the inverted arch middle template 4 can slide to leave a space, the construction is more convenient, the inverted arch concrete can be vibrated and compacted in time, the inverted arch concrete is convenient to vibrate and exhaust, the construction quality is improved, after the concrete of the intermediate inverted arch layer 7 is poured, the inverted arch middle template 4 slides again, the piled concrete is leveled and formed, meanwhile, the concrete can be poured below the two side templates 1, construction is very convenient, quick, and upset template 11 can be turned over under tilting mechanism 12's drive, for the corner on invert layer 7 provides floating operating space, improves the construction quality and the shaping effect of this department, and after the invert construction, 4 roll-off invert construction areas in the middle of the invert, can avoid with the filling construction of vertical work interval, and easier implementation, cost are lower, have improved construction convenience and efficiency of construction, reduce the occupation of vertical work interval. And, the middle template 4 of the inverted arch can go up and down, specifically, the middle template 4 of the inverted arch descends, cooperates with the turnover templates 11 on both sides to form the construction profile surface of the inverted arch layer 7, and the middle template 4 of the inverted arch ascends to separate the middle template 4 of the inverted arch from the middle inverted arch layer 7 which is poured, so that the surface of the middle inverted arch layer 7 is processed, demoulding is facilitated, and the construction quality, construction convenience and construction efficiency are improved.

In this embodiment, the sliding frame 2 includes a form mounting portion 21 and two connecting portions 22, the tops of the two connecting portions 22 are respectively slidably disposed on the longitudinal rails 3 of the two side forms 1, two ends of the form mounting portion 21 are respectively connected with the bottoms of the two connecting portions 22, and the inverted arch middle form 4 is disposed on the form mounting portion 21. The middle arc surface of the inverted arch layer 7 is formed through the inverted arch middle template 4 on the template mounting part 21, the template mounting part 21 is connected with the longitudinal rail 3 through two connecting parts 22, as shown in fig. 4, the template mounting part 21 and the connecting parts 22 which incline upwards avoid the mounting area of the turnover template 11, interference is avoided, and the structure is reasonable.

In this embodiment, the connecting portion 22 is provided with a guide roller 23, and the guide roller 23 is slidably disposed on the longitudinal rail 3. Specifically, two sides of the formwork mounting portion 21 are respectively slidably arranged on the longitudinal rails 3 of the two side formworks 1 through guide rollers 23. The longitudinal rail 3 preferably adopts an I-steel rail, the guide rollers 23 preferably adopt a T-shaped structure, and the guide rollers 23 are matched with the longitudinal rail 3, so that the inverted arch middle template 4 on the template mounting part 21 can slide on the longitudinal rail 3 of the side template 1 in a reciprocating manner, the pouring and forming of an inverted arch layer 7 with one construction length are completed, and the construction efficiency is further improved.

In this embodiment, the sideform 1 is provided with a bracket 13, and the longitudinal rail 3 is provided on the bracket 13. The side templates 1 are fixed on the lower sides of the supports 13, so that inverted arches on two sides of the tunnel 9 can be conveniently formed, the sliding frames 2 on the longitudinal rails 3 are supported through the supports 13, and then the inverted arch middle templates 4 are supported, so that the structure is more stable, and the sliding is convenient.

In this embodiment, a connection beam 5 is further disposed between the two sideforms 1, and the connection beam 5 is located at the front end of the sideform 1 (i.e., the front end shown in the form sliding direction F in fig. 6). The two side templates 1 are connected through the connecting beam 5, so that the construction is convenient, the connection is reliable, and the positioning size of the two side templates 1 is ensured.

In this embodiment, a detachable reinforcing rod 14 is further disposed between the sideform 1 and the turning form 11. Specifically, the two ends of the reinforcing rod 14 are respectively installed on the side formwork 1 and the turnover formwork 11 through pin keys, so that the supporting capability of the turnover formwork 11 in the formwork erecting process is enhanced.

In this embodiment, the turnover mechanism 12 is an extensible member, one end of the extensible member is hinged to the side form 1, and the other end of the extensible member is hinged to the turnover form 11. The turnover of the turnover template 11 is realized through the stretching of the telescopic piece, and the telescopic piece can be a telescopic oil cylinder and is reliable in connection.

In this embodiment, the length of the side formwork 1 along the longitudinal direction of the tunnel 9 is at least one time longer than the length of the inverted arch middle formwork 4 along the longitudinal direction of the tunnel 9, so that the inverted arch middle formwork 4 can be constructed along the longitudinal rail 3 to form at least two inverted arch layers 7, and construction is facilitated.

In this embodiment, the liftable inverted arch form further includes a center channel form 6, and the center channel form 6 is connected to the rear end of the inverted arch middle form 4 (i.e., the rear end shown in the form sliding direction F in fig. 6). The position of the central ditch is reserved through the central ditch template 6 and is used for draining water in the tunnel 9, after the inverted arch layer 7 is poured, the inverted arch middle template 4 slides out of the construction area, the central ditch template 6 is driven to move to the position above the poured inverted arch layer 7, then the filling layer 8 concrete is poured, and the construction efficiency is further improved.

In this embodiment, the filling end sealing mold 41 is provided on the inverted arch intermediate mold 4. After the inverted arch layer 7 is poured, the inverted arch middle formwork 4 can be slid out of the construction area, filling construction in the same longitudinal working area is avoided, a filling construction area is formed between the filling end sealing formwork 41 and the two side formworks 1, the structure of the formwork is simplified, occupation of the longitudinal working area is reduced, and then the filling layer 8 concrete is poured.

The construction method of the liftable inverted arch template comprises the following steps:

s1: forming inverted arch forming areas on two sides of the tunnel 9: fixing two side templates 1 on two sides of a tunnel 9 respectively, enabling an overturning template 11 to be overturned downwards to a position to be poured through an overturning mechanism 12, and installing reinforcing rods 14 to form inverted arch forming areas on two sides of the tunnel 9;

s2: forming a middle inverted arch forming area: the sliding frame 2 is arranged on the longitudinal rails 3 of the two side templates 1 in a sliding mode, the inverted arch middle template 4 is made to descend to be matched with the turnover templates 11 on the two sides to form a middle inverted arch forming area, and the central ditch template 6 is made to be located outside the inverted arch forming area to prepare for construction of the filling layer 8;

s3: and (3) pouring an inverted arch layer 7: sliding the inverted arch middle template 4 to the position of an inverted arch layer 7 to be poured along the longitudinal rail 3, and pouring concrete below the inverted arch middle template 4 and the side templates 1 to form the inverted arch layer 7;

s4: surface treatment of the inverted arch layer 7: lifting the inverted arch middle template 4, separating the inverted arch middle template 4 from the poured middle inverted arch layer 7, simultaneously sliding the inverted arch middle template 4 to the outside of the inverted arch layer 7, plastering the inverted arch layer 7, removing the reinforcing rods 14, upwards overturning the overturning template 11 through the overturning mechanism 12, and plastering the corners of the inverted arch layer 7;

s5: and (3) pouring a filling layer 8: moving the central ditch template 6 to the upper part of the inverted arch layer 7 through the inverted arch middle template 4, forming a filling construction area between the filling end sealing template 41 and the two side templates 1, and pouring concrete on the inverted arch layer 7 to form a filling layer 8;

s6: surface treatment of the filling layer 8: the operation of coating the filling layer 8 is performed.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the utility model, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.

Claims

1. A liftable inverted arch form, characterized in that: include along two side form boards (1) of tunnel (9) both sides parallel arrangement and lie in carriage (2) between two side form boards (1), each all be equipped with on side form board (1) along longitudinal rail (3) that tunnel (9) depth direction was arranged, carriage (2) cunning is located each side form board (1) on longitudinal rail (3), the bottom of carriage (2) is equipped with template (4) in the middle of the inverted arch of liftable, on side form board (1) articulated have be used for with template (4) complex upset template (11) in the middle of the inverted arch, upset template (11) with be equipped with tilting mechanism (12) between side form board (1).

2. The liftable inverted arch template of claim 1, wherein: carriage (2) are including template installation department (21) and two connecting portion (22), two the top of connecting portion (22) is slided respectively and is located two side form (1) on vertical track (3), the both ends and two of template installation department (21) the bottom of connecting portion (22) links to each other respectively, template (4) are located in the middle of the inverted arch on template installation department (21).

3. The liftable inverted arch template of claim 2, wherein: the connecting part (22) is provided with a guide roller (23), and the guide roller (23) is slidably arranged on the longitudinal rail (3).

4. The liftable inverted arch template of claim 1, wherein: the side formwork (1) is provided with a support (13), and the longitudinal rail (3) is arranged on the support (13).

5. The liftable inverted arch template of claim 1, wherein: and a connecting beam (5) is further arranged between the two side formworks (1), and the connecting beam (5) is positioned at the front end of each side formwork (1).

6. The liftable inverted arch template of claim 1, wherein: and a detachable reinforcing rod (14) is also arranged between the side template (1) and the turnover template (11).

7. The liftable inverted arch template of claim 1, wherein: the turnover mechanism (12) is an extensible member, one end of the extensible member is hinged to the side template (1), and the other end of the extensible member is hinged to the turnover template (11).

8. The liftable inverted arch template of claim 1, wherein: the length of the side formwork (1) along the longitudinal direction of the tunnel (9) is longer than that of the inverted arch middle formwork (4) along the longitudinal direction of the tunnel (9).

9. The liftable inverted arch template of any one of claims 1 to 8, wherein: the liftable inverted arch template further comprises a central groove template (6), and the central groove template (6) is connected with the inverted arch middle template (4).

10. The liftable inverted arch template of claim 9, wherein: and a filling end sealing die (41) is arranged on the inverted arch middle template (4).