CN216198145U

CN216198145U - Tunnel bottom arch concrete lining trackless slip form device

Info

Publication number: CN216198145U
Application number: CN202122338519.9U
Authority: CN
Inventors: 李忠贵; 罗子湛; 王宁
Original assignee: China Huadian Engineering Group Co Ltd
Current assignee: China Huadian Engineering Group Co Ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-04-05
Anticipated expiration: 2031-09-26

Abstract

The utility model discloses a trackless slip form device for concrete lining of a tunnel bottom arch, which comprises a template system, a traction system and a concrete feeding system, wherein the template system comprises a template part, a support frame, a plastering sample frame and a balance weight, the template part is arranged above the plastering sample frame, the support frame is connected with the template part through a bolt, the balance weight is arranged on the template part, and 4 attached vibrators and 4 observation windows are arranged on the template part. The method solves the problems that the conventional method for lining the bottom arch concrete of the long-distance diversion tunnel is slow in construction progress, affects the power generation period and is high in template manufacturing cost, and solves the quality defects that the conventional method is easy to cause bubbles, pitted surfaces and the like on the surface of the concrete; a large amount of cost and construction period for installing the I-shaped steel rail are saved, construction progress is accelerated, and construction cost is saved.

Description

Tunnel bottom arch concrete lining trackless slip form device

Technical Field

The utility model relates to a trackless slip form device for a concrete lining of a bottom arch of a tunnel, and belongs to the technical field of diversion tunnel construction.

Background

The concrete lining of the long-distance diversion tunnel often becomes a key line for restricting the power generation period, the common concrete lining is provided with a needle beam steel mould trolley full-section lining mode (bottom arch + side top arch), a bottom arch and a side top arch are separately lined and adopt a side top arch steel mould trolley mode, the bottom arch concrete is usually lined in a bottom arch turnover mode, and partial engineering is also lined in a bottom arch rail sliding mould mode. If the needle beam steel mould trolley is adopted to carry out full-section concrete lining, a plurality of needle beam steel mould trolleys need to be manufactured, the manufacturing cost is high, the condition of arranging the needle beam steel mould trolleys is not convenient for a single working surface, and the concrete at the bottom arch part of the needle beam steel mould trolley is easy to generate bubbles and pitted surfaces, so that the quality defect is difficult to eliminate; if the bottom arch is lined in a bottom arch turnover mode, although the problem that bubbles are generated in bottom arch concrete can be solved, the construction progress cannot meet the requirements. If the rail sliding form is adopted for bottom arch concrete lining, the I-shaped steel rail installation process needs to occupy a certain construction period, the construction progress is slow, and the construction cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a trackless slip form device for concrete lining of a bottom arch of a tunnel, which realizes the organic combination of four functions of 'track-free installation', 'concrete continuous pouring', 'concrete plastering' and 'parallel preparation of a warehouse surface', and solves the quality defects that the track installation occupies a long period of time, the cost is high, the construction progress of a rollover technology is slow, and bubbles, pitted surfaces and the like easily appear on the surface of the concrete of the bottom arch in the common method.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a tunnel bottom arch concrete lining trackless slipform device, includes formwork system, traction system and concrete feeding system, and formwork system includes template piece, support frame, the appearance frame of plastering and counter weight, and template piece arranges the appearance frame top of plastering in, and the support frame passes through the bolt to be connected with template piece, and the counter weight setting is provided with 4 attached to vibrators and 4 observation windows on the template piece.

The attached vibrator is used for vibrating concrete and reducing resistance when the template slides. The observation window is used for observing whether the concrete is filled.

In the trackless slip form device for concrete lining of the bottom arch of the tunnel, the template part comprises 6 reverse-arc shaping steel templates with the same width, and the 6 reverse-arc shaping steel templates with the same width are sequentially connected into a dovetail-shaped template part through bolts. According to the characteristics that the bottom concrete is initially set firstly and the two sides of the bottom concrete are initially set later, 6 reverse arc type shaping steel templates with the same width are used for forming a template piece with a dovetail-shaped structure.

In the trackless slip form device for concrete lining of the bottom arch of the tunnel, the anti-arc type shaping steel template comprises a panel, an arc plate, a ribbed plate and a template back copy, wherein the ribbed plate and the template back copy are welded on the upper surface of the arc plate, and the panel is welded on the lower surface of the arc plate; each anti-arc type design steel form is equipped with 2 supports, and the support passes through the bolt and is connected with the floor. 6 anti-arc type shaping steel templates are connected into an integral template component through a support frame and a bolt.

In the trackless slip form device for concrete lining of the bottom arch of the tunnel, the traction system comprises a winch, a pulley block, a matched steel wire rope and a ground anchor, the winch is arranged at the front end of the formwork piece in order to facilitate control, the ground anchor and the pulley block are arranged outside a pouring area in front of the formwork piece, and the ground anchor and the pulley block are connected with the winch through the matched steel wire rope.

In the trackless slip form device of arch concrete lining at bottom of aforementioned kind of tunnel, concrete feeding system includes concrete pump machine, main pump pipe, first branch pipe and second branch pipe, and concrete pump machine and main pump union coupling, the one end mouth of pipe and the main pump pipe intercommunication of first branch pipe, the other end mouth of pipe sets up the left side at the template piece, the one end mouth of pipe of second branch pipe also with main pump pipe intercommunication, the other end mouth of pipe then sets up the right side at the template piece, first branch pipe and second branch pipe symmetrical arrangement are in the both sides of main pump pipe. And conveying the concrete to the bin surface through a concrete pump. Concrete warehousing and storehouse face planning need be according to concrete placement requirement overall reasonable arrangement, and first branch pipe and second branch pipe are established on the support frame, and the left and right both sides of the template piece of being convenient for are the unloading simultaneously, and the concrete pump setting is pour unit the place ahead suitable distance at the storehouse face, and the unit concrete placement is pour to this storehouse face of being convenient for and next unit storehouse face preparation goes on simultaneously.

In the trackless slip form device for concrete lining of the bottom arch of the tunnel, the left side and the right side of the template part are respectively provided with 6 balance weights which are arranged at equal intervals, the balance weights on the left side and the right side are symmetrically arranged one by one, and the balance weights are anti-floating sand bins.

In the tunnel bottom arch concrete lining trackless slip form device, the plastering sample frame comprises a steel pipe, anchor bars and a reinforcing mesh, the anchor bars are arranged below the steel pipe, and the anchor bars penetrate through the reinforcing mesh and are connected with the steel pipe; the number of steel pipe is 3, and the below of every steel pipe all is provided with the anchor bar, and 3 steel pipes form the slide that supplies the template spare to slide. And one end of the anchor bar far away from the steel pipe is fixed on the rock wall of the tunnel.

In the foregoing trackless slip form device for concrete lining of a bottom arch of a tunnel, 1 inner brace is fixed on each of the left side and the right side of the form member, the inner braces are hooked on the reinforcing mesh, and the reinforcing mesh is tensioned by the form member through the inner braces. To resist the uplift force of the concrete.

In the trackless slip form device for concrete lining of the bottom arch of the tunnel, the support frame consists of the top beam, the bottom beam and 2 stand columns, the top beam and the stand columns are connected by welding, and the support frame and the template back formwork are connected by bolts.

In the trackless slip form device for concrete lining of the bottom arch of the tunnel, the tail part of the form part is provided with the detachable arc-shaped plastering frame and the walkway plate, and the plastering frame is connected to the reverse arc-shaped shaping steel form at the tail end of the form part by using the bolt; when the plastering is carried out, the plastering frame is arranged at the tail part of the template piece, and when the template piece slides, the plastering frame is detached. The die plate member processing angle β is 97 °.

According to the technical scheme, other tunnel bottom arch concrete linings with different shapes and sizes can also be used in reference.

Compared with the prior art, the utility model utilizes 3 steel pipes of the plastering sample frame as the slideway for the sliding of the template piece, saves the installation procedure of a large I-shaped steel rail and realizes the purpose of no rail installation.

Common tunnel bottom arch concrete pouring is generally performed according to one unit of 12m, the steel bar binding, bin surface cleaning and acceptance checking work of the next unit is performed after the unit is poured, the concrete pouring operation is discontinuous, and the construction period is long; after the method is adopted, the length of the pouring unit is adjusted to 48m (which can be determined according to specific projects) from 12m, the original 4 units can be continuously poured by the concrete at one time, and the pouring progress is greatly accelerated.

The detachable arc-shaped plastering frame and the walking board have the function of plastering concrete;

when common tunnel bottom arch concrete is poured according to each 12m unit, the steel bar binding and the bin surface preparation of the next 12m unit are difficult to be simultaneously carried out due to the influence of traffic and construction equipment; by adopting the utility model, the concrete pump (comprising concrete transport vehicles and other equipment) is arranged in front of the next unit, so that the operation space is enlarged, and when the concrete of the next unit is poured, the parallel preparation of the bin surfaces such as bottom cleaning, steel bar binding and the like can be simultaneously carried out on the 'next bin spare bin section' of the next unit, thereby accelerating the construction progress.

The utility model solves the problems of construction period occupation, high cost or slow construction progress of the rollover technology in the rail installation in the common method.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic view of a slip form construction of the present invention;

FIG. 2 is an enlarged view of A of FIG. 1 in accordance with the present invention;

FIG. 3 is an expanded view of the slipform panels of the present invention;

fig. 4 is a slipform construction floor plan of the present invention.

Reference numerals: 1-slip form panel, 2-arc plate, 3-ribbed plate, 4-slip form back imitation, 5-attachment vibrator, 6-support frame, 7-counterweight, 8-observation window, 9-plastering sample frame, 10-anchor bar, 11-reinforcing mesh, 12-winch, 13-main pump pipe, 14-tunnel rock wall, 15-internal stay, 16-pulley block, 17-plug template, 18-concrete pump, 19-second branch pipe, 20-template piece, 21-shaping steel template, 22-ground anchor, 23-steel pipe and 24-first branch pipe.

The utility model is further described with reference to the following figures and detailed description.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention.

Example 1 of the utility model: a trackless slip form device for a concrete lining of a bottom arch of a tunnel comprises a template system, a traction system and a concrete feeding system. The template system comprises a template component 20, a support frame 6, a plastering sample frame 9 and a counterweight 7, and all the structures are assembled on site after being manufactured respectively. Template part 20 is placed above plastering sample frame 9, support frame 6 is connected with template part 20 through bolts, counterweight 7 is arranged on template part 20, and as shown in figure 2, template part 20 is provided with 4 attached vibrators 5 and 4 observation windows 8 of 35cm x 35 cm. Comprehensively considering the actual situation of the tunnel, the central angle theta of bottom arch slip form lining pouring is determined to be 93 degrees, and the processing angle beta of the template member 20 is 97 degrees.

Example 2 of the utility model: the utility model provides a tunnel bottom arch concrete lining trackless slip form device, includes formwork system, traction system and concrete feeding system, and formwork system includes template piece 20, support frame 6, the appearance frame 9 of plastering and counter weight 7, and template piece 20 is arranged in the appearance frame 9 top of plastering, and support frame 6 passes through the bolt to be connected with template piece 20, and counter weight 7 sets up on template piece 20, is provided with attached to formula vibrator 5 and observation window 8 on template piece 20. The template member 20 comprises 6 reverse arc type shaping steel templates 21 with the width of 1.5m, and the 6 reverse arc type shaping steel templates 21 with the same width are sequentially connected into the template member 20 in a dovetail shape through bolts. The total length of the template member 20 is 9 m. The reverse-arc-shaped shaping steel template 21 comprises a slip form panel 1, an arc plate 2, a ribbed plate 3 and a slip form back copy 4, wherein the ribbed plate 3 and the slip form back copy 4 are welded on the upper surface of the arc plate 2, and the slip form panel 1 is welded on the lower surface of the arc plate 2; and the slip form panel 1 and the arc plate 2 are rolled in a factory according to the radius of the tunnel, and all parts are connected by welding. 2 support frames 6 are installed on the reverse arc type shaping steel template 21, and the support frames 6 are connected with the ribbed plates 3 through bolts. The traction system comprises a winch 12, a pulley block 16, a matched steel wire rope and a ground anchor 22, wherein the winch 12 is arranged at the front end of the formwork piece 20, the ground anchor 22 and the pulley block 16 are arranged outside a pouring area in front of the formwork piece 20, and the ground anchor 22 and the pulley block 16 are connected with the winch 12 through the matched steel wire rope. Specifically, the traction system adopts 15 t winch 12 and a matched steel wire rope and a pulley block, the winch is arranged on the upper portion of a 1 st reverse arc type shaping steel template 21 at the front end of a template part 20 so as to be convenient for field operation of construction personnel, and a ground anchor and the pulley block 16 are arranged on the outer side of a unit plug template 17 of the pouring bin. Concrete feeding system includes concrete pump machine 18, main pump pipe 13, first branch pipe 24 and second branch pipe 19, and concrete pump machine 18 and main pump pipe 13 are connected, and the one end mouth of pipe of first branch pipe 24 communicates with main pump pipe 13, and the other end mouth of pipe sets up the left side at template spare 20, and the one end mouth of pipe of second branch pipe 19 also communicates with main pump pipe 13, and the other end mouth of pipe then sets up the right side at template spare 20, and first branch pipe 24 and second branch pipe 19 symmetrical arrangement are in the both sides of main pump pipe 13. Concrete is conveyed to the bin surface through the concrete pump 18 and is symmetrically distributed on two sides of the formwork component 20 through the first branch pipe 24 and the second branch pipe 19.

The left side and the right side of the template component 20 are respectively provided with 6 counter weights 7 which are arranged at equal intervals, the counter weights 7 on the left side and the right side are symmetrically arranged one by one, and the counter weights 7 are anti-floating sand bins. The counterweight 7 is used to resist the buoyancy of the concrete against the formwork member 20.

Example 3 of the utility model: the utility model provides a tunnel bottom arch concrete lining trackless slip form device, includes formwork system, traction system and concrete feeding system, and formwork system includes template piece 20, support frame 6, the appearance frame 9 of plastering and counter weight 7, and template piece 20 is arranged in the appearance frame 9 top of plastering, and support frame 6 passes through the bolt to be connected with template piece 20, and counter weight 7 sets up on template piece 20, is provided with attached to formula vibrator 5 and observation window 8 on template piece 20. The template member 20 comprises 6 reverse-arc-shaped shaping steel templates 21 with the same width, and the 6 reverse-arc-shaped shaping steel templates 21 with the same width are sequentially connected into the dovetail-shaped template member 20 through bolts. The reverse-arc-shaped shaping steel template 21 comprises a slip form panel 1, an arc plate 2, a ribbed plate 3 and a slip form back copy 4, wherein the ribbed plate 3 and the slip form back copy 4 are welded on the upper surface of the arc plate 2, and the slip form panel 1 is welded on the lower surface of the arc plate 2; 2 support frames 6 are installed on the reverse arc type shaping steel template 21, and the support frames 6 are connected with the ribbed plates 3 through bolts. The traction system comprises a winch 12, a pulley block 16, a matched steel wire rope and a ground anchor 22, wherein the winch 12 is arranged at the front end of the formwork piece 20, the ground anchor 22 and the pulley block 16 are arranged outside a pouring area in front of the formwork piece 20, and the ground anchor 22 and the pulley block 16 are connected with the winch 12 through the matched steel wire rope. Specifically, the traction system adopts 15 t winch 12 and matched steel wire ropes and pulley blocks, the winch is arranged on the upper portion of a 1 st shaping steel formwork 21 at the front end of the sliding formwork so as to be convenient for operation of construction personnel on site, and the ground anchor and the pulley block 16 are arranged on the outer side of a unit plug formwork 17 of the pouring bin. Concrete feeding system includes concrete pump machine 18, main pump pipe 13, first branch pipe 24 and second branch pipe 19, and concrete pump machine 18 and main pump pipe 13 are connected, and the one end mouth of pipe of first branch pipe 24 communicates with main pump pipe 13, and the other end mouth of pipe sets up the left side at template spare 20, and the one end mouth of pipe of second branch pipe 19 also communicates with the pump 13 of being responsible for, and the other end mouth of pipe then sets up the right side at template spare 20, and first branch pipe 24 and second branch pipe 19 symmetrical arrangement are in the both sides of being responsible for pump 13. The concrete is delivered to the deck by a concrete pump 18. The left side and the right side of the template component 20 are respectively provided with 6 counter weights 7 which are arranged at equal intervals, the counter weights 7 on the left side and the right side are symmetrically arranged one by one, and the counter weights 7 are anti-floating sand bins. The plastering sample frame 9 comprises a steel pipe 23, anchor bars 10 and a reinforcing mesh 11, wherein the anchor bars 10 are arranged below the steel pipe 23, and the anchor bars 10 penetrate through the reinforcing mesh 11 to be connected with the steel pipe 23; the number of the steel pipes 23 is 3, the anchor bars 10 are arranged below each steel pipe 23, the anchor bars 10 are uniformly arranged at intervals of 1.5m and are connected into a whole with the reinforcing mesh 11, and the 3 steel pipes 23 form a slideway for the sliding of the formwork piece 20. One end of the anchor bar 10 far away from the steel pipe 23 is inserted into the tunnel rock wall 14, and the rock entering is not less than 50 cm. The left side and the right side of the formwork component 20 are respectively fixed with 1 inner tie bar 15, the inner tie bars 15 are hooked on the reinforcing mesh 11, and the formwork component 20 tightens the reinforcing mesh 11 through the inner tie bars 15. During the concrete pouring process, the left side and the right side of the formwork element 20 are respectively hooked and tensioned by the inner tension bar 15 and the reinforcing mesh 11 so as to resist the floating force of the concrete. The inner brace 15 is a phi 16 hook bolt, one end of the inner brace is hung on the main rib of the outer layer steel bar of the bottom arch, and the other end of the inner brace is fixed with the ribbed slabs 2 on two sides of the template member 20 through bolts. Concrete is conveyed to the bin surface by a concrete pump 18 through a concrete pump pipe 13, the left side and the right side of the template member 20 are symmetrically blanked, and the two sides uniformly and synchronously rise. The slipform lining needs to be reasonably planned according to the size of the tunnel so as to realize the simultaneous parallel operation of concrete pouring and storehouse surface preparation and achieve the purposes of accelerating the construction progress and improving the working efficiency.

The support frame 6 is composed of a top beam, a bottom beam and 2 upright columns, the top beam is connected with the upright columns in a welding mode, and the support frame 6 is connected with the sliding form back formwork 4 through bolts. The afterbody of template spare 20 sets up detachable arc plastering frame and walks the guidance tape, and the bolt connection is used on "forked tail" anti-arc type design steel form 21 to the plastering frame.

The template part 20 is designed into a dovetail shape according to the size of a tunnel bottom arch, an attached vibrator is arranged on the template part 20 and used for concrete pouring vibration and reducing resistance through vibration when a template slides, meanwhile, an observation window is arranged to observe whether concrete is filled fully, and a counterweight is arranged to resist the floating force of the concrete; the tail part of the template component 20 is provided with a detachable arc-shaped plastering frame for plastering concrete; the template component 20 finishes sliding by using a traction system, and concrete is put in storage by adopting a pumping mode after the reasonable planning of the storage surface is carried out. Concrete continuous pouring is realized through the tunnel bottom arch concrete lining trackless slip form device, the operation is simple, the construction cost is low, the construction progress is fast, and the concrete continuous pouring formwork has obvious advantages compared with other formworks.

Claims

1. The utility model provides a tunnel bottom arch concrete lining trackless slipform device, a serial communication port, including template system, traction system and concrete feeding system, the template system includes template piece (20), support frame (6), the appearance frame of plastering (9) and counter weight (7), template piece (20) are arranged in and are plastered appearance frame (9) top, and support frame (6) are connected with template piece (20) through the bolt, counter weight (7) set up on template piece (20), are provided with attached to vibrator (5) and observation window (8) on template piece (20).

2. The tunnel bottom arch concrete lining trackless slip form device according to claim 1, characterized in that the form members (20) comprise 6 equal-width reverse-arc-shaped steel forms (21), and the 6 equal-width reverse-arc-shaped steel forms (21) are sequentially connected into the form members (20) in a dovetail shape through bolts.

3. The tunnel bottom arch concrete lining trackless slipform device according to claim 2, characterized in that the reverse-arc type shaping steel form (21) comprises a slipform panel (1), an arc plate (2), a rib plate (3) and a slipform back copy (4), the rib plate (3) and the slipform back copy (4) are welded on the upper surface of the arc plate (2), and the slipform panel (1) is welded on the lower surface of the arc plate (2); 2 supporting frames (6) are mounted on each reverse arc type shaping steel template (21), and the supporting frames (6) are connected with the rib plates (3) through bolts.

4. The tunnel bottom arch concrete lining trackless slip form device of claim 3, characterized in that the traction system comprises a hoist (12), a pulley block (16), a matching wire rope and a ground anchor (22), the hoist (12) is arranged at the front end of the form member (20), the ground anchor (22) and the pulley block (16) are arranged outside a pouring area in front of the form member (20), and the ground anchor (22) and the pulley block (16) are connected with the hoist (12) through the matching wire rope.

5. The tunnel bottom arch concrete lining trackless slip form device according to claim 4, wherein the concrete feeding system comprises a concrete pump machine (18), a main pump pipe (13), a first branch pipe (24) and a second branch pipe (19), the concrete pump machine (18) is connected with the main pump pipe (13), a pipe orifice at one end of the first branch pipe (24) is communicated with the main pump pipe (13), a pipe orifice at the other end is arranged at the left side of the formwork part (20), a pipe orifice at one end of the second branch pipe (19) is also communicated with the main pump pipe (13), a pipe orifice at the other end is arranged at the right side of the formwork part (20), the first branch pipe (24) and the second branch pipe (19) are symmetrically arranged at two sides of the main pump pipe (13), and concrete is conveyed to a concrete silo surface through the concrete pump machine (18).

6. The tunnel bottom arch concrete lining trackless slip form device according to claim 5, characterized in that the left side and the right side of the form member (20) are respectively provided with 6 counterweights (7) which are arranged at equal intervals, the counterweights (7) on the left side and the counterweights (7) on the right side are arranged in a one-to-one symmetrical manner, and the counterweights (7) are anti-floating sand bins.

7. A tunnel bottom arch concrete lining trackless slip form device according to claim 6, characterized in that the plastering sample frame (9) comprises a steel pipe (23), an anchor bar (10) and a reinforcing mesh (11), the anchor bar (10) is arranged below the steel pipe (23), and the anchor bar (10) passes through the reinforcing mesh (11) to be connected with the steel pipe (23); the number of steel pipe (23) is 3, and the below of every steel pipe (23) all is provided with anchor bar (10), and 3 steel pipe (23) form the slide that supplies template spare (20) to slide.

8. A tunnel bottom arch concrete lining trackless slip form device according to claim 7, characterized in that 1 inner brace (15) is fixed on each of the left and right sides of the form member (20), the inner brace (15) is hooked on the reinforcing mesh (11), and the form member (20) tensions the reinforcing mesh (11) through the inner brace (15).

9. The tunnel bottom arch concrete lining trackless slip form device according to claim 8, characterized in that the support frame (6) is composed of a top beam, a bottom beam and 2 upright columns, the top beam and the upright columns are connected by welding, and the support frame (6) and the slip form back profile (4) are connected by bolts.

10. The tunnel bottom arch concrete lining trackless slip form device according to claim 9, characterized in that the tail of the form member (20) is provided with a detachable arc-shaped plastering frame and a walkway plate, and the plastering frame is connected on a dovetail-shaped reverse arc-shaped shaping steel form (21) by bolts; the processing angle beta of the template component (20) is 97 degrees; the number of the attached vibrators (5) and the number of the observation windows (8) are 4.