CN218759936U - Tunnel auxiliary tunnel ditch rapid construction integrated die carrier - Google Patents

Abstract

The utility model belongs to the technical field of tunnel construction, in particular to an integrated formwork for rapid construction of tunnel auxiliary tunnel ditch, which comprises a rectangular frame, wherein four corners of the rectangular frame are respectively connected with a stand column; at least one group of top bracing devices are respectively arranged on two sides of the rectangular frame, each top bracing device comprises a steel pipe which is transversely arranged, and the steel pipes are connected with the stand columns; a screw rod is inserted into one end of the steel pipe, and the screw rod and the steel pipe form a telescopic structure; one end of the screw rod is connected with a first jacking for jacking the steel template; the screw rod is in threaded connection with a first nut; the upright post is also connected with a positioning plate; still including being used for with the steel form towards the taut pull rod of locating plate, pull rod one end can be dismantled and connect on the steel form, and the pull rod other end links to each other with the locating plate. The utility model discloses simple to operate, non-deformable, linear and size change in control, obviously improved the supplementary tunnel ditch low in efficiency of construction in tunnel, the poor shortcoming of appearance quality, are showing and have promoted construction quality and economic benefits.

Description

Tunnel auxiliary tunnel ditch rapid construction integrated die carrier

Technical Field

The utility model belongs to the technical field of the tunnel construction, concretely relates to tunnel is assisted gallery ditch and is under construction integration die carrier fast.

Background

At present, a common shaping template is commonly adopted for tunnel auxiliary tunnel ditch construction to carry out a traditional construction mode with multiple processes of formwork erection, formwork removal, formwork reversing and the like, and the process has the defects of long construction process time, slow construction progress, low efficiency, difficulty in controlling the size and linearity of a ditch structure, poor appearance quality, easiness in deformation and loss of the template and the like.

Therefore, aiming at the situation, the integrated formwork suitable for assisting the rapid construction of the tunnel ditch is researched by combining the project of Kangyu tunnel No. 1 cross tunnel construction site.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, an integrated formwork for rapid construction of a tunnel auxiliary gallery ditch is provided. The method is suitable for the construction of deepened ditches of auxiliary tunnels and concrete ditches of highways, railways, municipal works and the like; the tunnel auxiliary tunnel ditch is convenient to install, not easy to deform, easy to control in linearity and size, capable of obviously improving the defects of low construction efficiency and poor appearance quality of the tunnel auxiliary tunnel ditch, and capable of obviously improving the construction quality and economic benefits.

The utility model provides a technical scheme that its technical problem adopted is:

the technical scheme provides an integrated formwork for rapid construction of a tunnel auxiliary tunnel ditch, which comprises a rectangular framework, wherein four corners of the rectangular framework are respectively connected with an upright post; at least one group of top bracing devices are respectively arranged on two sides of the rectangular frame, each top bracing device comprises a steel pipe which is transversely arranged, and the steel pipes are connected with the stand columns; a screw rod is inserted into one end of the steel pipe, and the screw rod and the steel pipe form a telescopic structure; one end of the screw rod is connected with a screw rod a first jacking for jacking the steel formwork; the screw rod is in threaded connection with a first nut; the upright post is also connected with a positioning plate; the steel form is connected to the steel form in a detachable mode, and the other end of the pull rod is connected with the positioning plate.

Preferably, the pull rod is a threaded rod; the positioning plate is provided with a through hole, and one end of the pull rod freely penetrates through the through hole and is in threaded connection with a third nut; the third nut is abutted against one side of the positioning plate; the surface of the steel template is connected with a second nut; the other end of the pull rod is in threaded connection with the second nut.

Preferably, the other end of the steel pipe is connected with a second jacking.

Preferably, the second top support is of a circular plate type structure.

Preferably, the diameter of the second jacking is larger than the pipe diameter of the steel pipe.

Preferably, the first top support is of a '21274' type structure, and the first top support is provided with a bayonet.

Preferably, the upright posts, the rectangular frame and the positioning plate are all angle steel.

Preferably, the positioning plate is positioned between the top shores; the through hole is formed in the center of the positioning plate; the top shoring devices positioned at two sides of the rectangular frame are symmetrically arranged by the axis position of the through hole.

Preferably, all the shoring devices are located below the pull rod.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model has the advantages of being simple in structure and convenient in operation, the preparation is easy, and low cost has realized ditch integration die carrier batch production processing, improves processingquality, has reduced manual operation, has practiced thrift the labour to reduce construction cost.

2. This device is through setting up shore ware and pull rod, adopts the thinking of "pushing up under + pull up", realizes the reliable and stable of steel form and die carrier to be connected, and in the installation procedure, easy operation shortens to 2 hours by original 4.5 hours, promotes the efficiency of construction for the construction progress.

3. The ditch integrated formwork device can reduce the workload of installing and positioning the reinforcing steel bars on site, is convenient to reinforce, improves the ditch construction efficiency and is not easy to cause the phenomenon of floating formwork. The utility model discloses simple to operate, non-deformable, linear and size change in control, obviously improved the supplementary tunnel ditch low in efficiency of construction in tunnel, the poor shortcoming of appearance quality, are showing and have promoted construction quality and economic benefits.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a front view of the structure of the present invention.

Fig. 2 is a top view of the structure of the present invention (omitting the pull rod, the positioning plate and the steel form).

Fig. 3 is a sectional view of the steel pipe, the screw rod and the first jacking engagement structure.

Fig. 4 is a side view of the structure of the present invention (without tie rods and steel form).

Fig. 5 is a side view of the structure of the present invention cooperating with the steel form.

Fig. 6 is a schematic structural view of a plurality of the present invention in use.

Description of reference numerals:

1-upright column; 2-a steel pipe; 3-a screw rod; 4-first jacking; 5-a first nut; 6-second jacking; 7-a pull rod; 8-a second nut; 9-steel moulding plate; 10-a third nut; 11-a positioning plate; 12-a through hole; 13-rectangular frame.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 to 6, in order to solve the above problems in the tunnel auxiliary tunnel ditch construction and ensure that the quality of the ditch meets the acceptance criteria, the embodiment provides an integrated formwork for rapid tunnel auxiliary tunnel ditch construction. The mould frame is mainly formed by welding L40 angle steel and a steel pipe 2, 2 phi 42 steel pipes 2 are respectively welded at the positions 20cm away from the bottom upwards and the top downwards, the matched screw rod 3 is used for fixing the template and adjusting the width of the ditch template; the top is provided with a pull rod 7 with a diameter of 12 to adjust the line shape of the template.

The following is a detailed description:

the embodiment provides an integrated formwork for rapid construction of a tunnel auxiliary tunnel ditch, which comprises a rectangular framework 13, wherein the rectangular framework 13 is formed by welding four end-to-end connecting rods, and the connecting rods can be angle irons; four corners of the rectangular frame 13 are respectively connected with an upright post 1, and the upright posts 1 and the rectangular frame 13 are welded; the two sides of the rectangular frame 13 are respectively provided with at least one set of top bracing device, in this embodiment, the two sides of the rectangular frame 13 are respectively provided with two sets of top bracing devices for top bracing the steel form 9.

In this embodiment, the top bracing device adopts the following structural form:

the top support device comprises a steel pipe 2 which is transversely arranged, the steel pipe 2 is a phi 42 steel pipe, the steel pipe 2 is connected with the upright post 1, and 2 phi 42 steel pipes are respectively welded at positions which are 20cm away from the bottom of the upright post 1 upwards and the top of the upright post 1 downwards; a screw rod 3 is inserted into one end of the steel pipe 2, the screw rod 3 is a threaded rod, and the screw rod 3 and the steel pipe 2 form a telescopic structure; the screw rod 3 can extend out and retract in the steel pipe 2, and the screw rod 3 is used for fixing the steel template 9 and adjusting the width of the ditch template; one end of the screw rod 3 is connected with a first jacking 4 for jacking a steel template 9; the screw rod 3 is in threaded connection with a first nut 5; when the steel pipe support is used, the first nut 5 is used for fixing the position of the screw rod 3, when the steel pipe support is used, the first nut 5 is screwed to realize the movable jacking of the screw rod 3, and the first nut 5 abuts against the end part of the steel pipe 2. The upright post 1 is also connected with a positioning plate 11; still including being used for with steel form 9 towards the taut pull rod 7 of locating plate 11, the pull rod 7 mainly is used for adjusting the 9 line types of steel form, and 7 one ends of pull rod can be dismantled and connect on steel form 9, and the 7 other ends of pull rod link to each other with locating plate 11, and when using, pull rod 7 can be followed steel form 9 and dismantled and the installation, through adjustment pull rod 7, can realize the fastening between steel form 9 and the integration die carrier.

As a preferable scheme, the pull rod 7 is a threaded rod; a through hole 12 is formed in the positioning plate 11, one end of the pull rod 7 freely penetrates through the through hole 12 and is in threaded connection with a third nut 10; the third nut 10 leans against one side of the positioning plate 11; the surface of the steel moulding plate 9 is connected with a second nut 8; the other end of the pull rod 7 is in threaded connection with a second nut 8; or a threaded hole is reserved on the steel template 9, and one end of the pull rod 7 is bolted with the threaded hole; when the steel template tensioning fixing device is used, the third nut 10 is screwed to drive the pull rod 7 to move, and then the steel template 9 and the positioning plate 11 can be tensioned and fixed.

It should be noted that the second nut 8 can be welded to the steel form 9 in advance.

For better top support, the other end of steel pipe 2 is connected with second top and holds in the palm 6, and second top holds in the palm 6 top support in the invert filling face.

In the present embodiment, the second jacking 6 includes, but is not limited to, a circular plate-shaped structure or a rectangular plate-shaped structure.

In this embodiment, the diameter of the second jacking 6 is larger than the pipe diameter of the steel pipe 2, so that the contact area can be increased.

As a preferable technical solution, in this embodiment, the first top holder 4 may be a '21274', the first top holder 4 has a bayonet, and the steel form 9 has a reinforcing rib on its surface, and when in use, the bayonet of the first top holder 4 can be clipped on the reinforcing rib, so as to facilitate positioning.

In this embodiment, the upright post 1, the rectangular frame 13 and the positioning plate 11 are all angle steels, which are convenient for material collection.

It should be noted that, in the present embodiment, the positioning plate 11 is located between the top supporters; the through hole 12 is arranged in the center of the positioning plate 11; the shoring devices on two sides of the rectangular frame 13 are symmetrically arranged with the axis position of the through hole 12, so that the stress is uniform.

In this embodiment, the top shoring devices are all located below the pull rod 7, and a fixing mode of a steel formwork 9 of "top down + top up" can be formed. This device adopts the thinking of "pushing up down + pull up" through setting up shoring ware and pull rod 7, realizes the reliable and stable of steel form 9 and die carrier to be connected.

The method of use of the device is described below:

A. integrated die carrier installation

Measuring the position of the drainage wall, drilling holes at the side line of the drainage by using an electric drill, and drilling a phi 12 template positioning steel bar; the positioning steel bar is vertically embedded with steel bars, so that the positioning effect is achieved, and the subsequent position positioning of the steel template 9 is facilitated; installing an integrated die frame at a distance of 1.5 m; installing a ditch template, wherein the ditch steel template is a shaped steel template, the height of the steel template 9 is 80cm, and a phi 12 pull rod 7 is used for penetrating and connecting the steel template 9 into a threaded hole of a preformed hole of the steel template 9 to fix the steel template 9 or the phi 12 pull rod 7 is used for bolting into a second nut 8 on the surface of the steel template 9; the outer side of the die carrier adopts a second jacking 6 to abut against an inverted arch filling surface, and the inner side of the die carrier rotates the screw rod 3 to enable the first jacking 4 to jack the steel template 9. It should be noted that: the ditch width of the screw rod 3 is kept at the net width of 40cm by adjusting the length of the screw rod. The field technician performs a scale recheck and checks the stability of the template. The adjacent steel templates 9 are connected into a whole in a bolting mode.

B. Concrete pouring and form removing

After the concrete arrives at the site, the performance indexes of slump, workability, air content and the like are firstly detected, the slump should be controlled within the range of 14-16 cm, the concrete pouring can be started after each index is normal, the concrete is uniformly poured in layers, and the pouring is finished at one time. Because the ditch slot section is little, can not directly go into the mould with the tank car, need make the plain end with iron sheet "[ type chute", be convenient for guide concrete income mould, pour the in-process, strengthen concrete and vibrate, accomplish "insert soon and pull out slowly", pour and carry out the first face of plastering behind the design top surface in time, carry out the second face of plastering when waiting concrete initial set, surfacing, bubble-free, edges and corners are clear.

When the formwork is disassembled, the pull rod 7 with the diameter of 12 is loosened, the steel formwork 9 is knocked and vibrated by a small hammer, the steel formwork 9 is separated from concrete, then the screw rod 3 is adjusted slowly, the steel formwork 9 of the ditch in the groove is folded and lifted, the demoulding operation is completed, watering maintenance is carried out in time after demoulding, and the ditch concrete is guaranteed to reach the design strength.

C. The control key points are as follows:

(1) The welding position of the connecting angle steel and the steel pipe 2 is well controlled during processing in the processing field, the welding quality is ensured, and the strength and the rigidity of the integrated die carrier are ensured.

(2) After the template is linearly adjusted, the supporting points of the template are carefully checked, and each supporting point is ensured to have no reserved gap and to be tightly attached to the template.

(3) After concrete is poured, residual concrete on the pull rod 7 and the screw rod 3 is cleaned in time, and the service life and the fixing effect of the integrated formwork are guaranteed.

D. Application work points and results:

1. the construction site is applied to the transverse hole 1 of the Kangyu tunnel.

2. Application success

(1) The quality is improved. The ditch poured by the integrated die carrier is linear, straight and attractive, and the size of the ditch meets the design specification requirement.

(2) And the cost is saved. The integrated die carrier is firm in welding and strong in stability, deformation does not occur in construction engineering, the die carrier can be repeatedly utilized, and loss of materials during turnover is avoided.

(3) The process is simplified. 20 sets of molds are arranged in the transverse hole of the Kangyu tunnel No. 1, construction efficiency is obviously improved after the mold frame is adopted for construction, and the original time for installing the mold plate is shortened to 2 hours from 4.5 hours.

E. Has the advantages that:

1. the factory processing of the integrated ditch die carrier is realized, and the processing quality is improved; the manual operation is reduced, the labor force is saved, and the construction cost is reduced.

2. In the template installation process, the original 4.5 hours is shortened to 2 hours, so that the construction efficiency is improved, and the construction progress is accelerated.

3. The ditch integrated formwork device can reduce the workload of installing and positioning the reinforcing steel bars on site, is convenient to reinforce, improves the ditch construction efficiency and is not easy to cause the phenomenon of floating formwork.

F. Economic benefits are as follows:

f1, saving working hours per cycle: 3 people × 4.5 hours-2 people × 2 hours =9.5 man-hours; the cost is saved by 9.5 working hours multiplied by 25 yuan/working hours =238 yuan per cycle; the saving rate: 1- (2 people × 2 hours) ÷ (3 people × 4.5 hours) × 100% =71%.

F2, social benefit:

the ditch integrated formwork device reduces the manual operation time and improves the ditch construction efficiency; further quickening the construction progress of the auxiliary tunnel and laying a solid foundation for entering the main tunnel construction and penetrating the hidden line in the river at an early time.

The formwork is suitable for the deepening type ditch construction of the auxiliary tunnel and is also used for concrete ditch construction of highways, railways, municipal works and the like. The device is convenient to install, not easy to deform, linear and easy to control in size, obviously overcomes the defects of low construction efficiency and poor appearance quality of the tunnel auxiliary gallery ditch, and obviously improves the construction quality and economic benefit.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. The tunnel auxiliary tunnel ditch rapid construction integrated formwork is characterized by comprising a rectangular framework, wherein four corners of the rectangular framework are respectively connected with a stand column; at least one group of top bracing devices are respectively arranged on two sides of the rectangular frame, each top bracing device comprises a steel pipe which is transversely arranged, and the steel pipes are connected with the stand columns; a screw rod is inserted into one end of the steel pipe, and the screw rod and the steel pipe form a telescopic structure; one end of the screw rod is connected with a first jacking for jacking the steel template; the screw rod is in threaded connection with a first nut; the upright post is also connected with a positioning plate; the steel form is connected to the steel form in a detachable mode, and the other end of the pull rod is connected with the positioning plate.

2. The integrated formwork for the rapid construction of the tunnel auxiliary tunnel ditch as claimed in claim 1, wherein the pull rod is a threaded rod; the positioning plate is provided with a through hole, and one end of the pull rod freely penetrates through the through hole and is in threaded connection with a third nut; the third nut is abutted against one side of the positioning plate; the surface of the steel template is connected with a second nut; the other end of the pull rod is in threaded connection with the second nut.

3. The integrated formwork for rapid construction of the tunnel auxiliary tunnel ditch according to claim 1, wherein the other end of the steel pipe is connected with a second jacking.

4. The integrated formwork for rapid construction of the tunnel auxiliary tunnel ditch as claimed in claim 3, wherein the second jacking is of a circular plate type structure.

5. The integrated formwork for rapid construction of the tunnel auxiliary tunnel ditch according to claim 4, wherein the diameter of the second jacking is larger than the pipe diameter of the steel pipe.

6. The integrated formwork for the rapid construction of the tunnel auxiliary tunnel ditch as claimed in claim 1, wherein the first jacking is of a structure of a type of' 21274.

7. The integrated formwork for the rapid construction of the tunnel auxiliary tunnel ditch according to claim 2, wherein the upright posts, the rectangular frame and the positioning plates are all angle steel.

8. The integrated formwork for rapid construction of an auxiliary tunnel ditch of a tunnel according to claim 2, wherein the positioning plate is positioned between the shores; the through hole is formed in the center of the positioning plate; the top shoring devices positioned at two sides of the rectangular frame are symmetrically arranged by the axis position of the through hole.

9. The integrated formwork for rapid construction of an auxiliary tunnel ditch of a tunnel according to claim 8, wherein all the shoring devices are positioned below the pull rod.

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