CN204344136U - A kind of inverted arch short abutment wall Combined type sizing punching block and screw mandrel location reinforcement system - Google Patents
A kind of inverted arch short abutment wall Combined type sizing punching block and screw mandrel location reinforcement system Download PDFInfo
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- CN204344136U CN204344136U CN201420716079.3U CN201420716079U CN204344136U CN 204344136 U CN204344136 U CN 204344136U CN 201420716079 U CN201420716079 U CN 201420716079U CN 204344136 U CN204344136 U CN 204344136U
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Abstract
A kind of inverted arch short abutment wall Combined type sizing punching block and screw mandrel location reinforcement system, wherein, the short sidewall template of inverted arch is arranged on the inverted arch place of having excavated, the short sidewall template of inverted arch interlude concrete I place bottom inverted arch is provided with support bar at the bottom of the transversely strengthening of horizontal arrangement, and the short sidewall template of inverted arch interlude concrete I, inverted arch short side wall concrete II junction bottom inverted arch are provided with transversely strengthening topmast strut; Short sidewall template reinforcing top hound is arranged on the inverted arch short side wall concrete II place on transversely strengthening topmast strut and inverted arch short sidewall template vertical direction; Positive left-hand thread regulates jackscrew to be arranged on the short sidewall template of inverted arch and short sidewall template and reinforces and push up support bar at the bottom of hound, transversely strengthening, transversely strengthening topmast strut junction; Simple steel trestle is arranged on the short sidewall template top of inverted arch; What the utility model avoided that the short side wall concrete of inverted arch builds that operation and face construct influences each other, and substantially increases constructing tunnel work efficiency.
Description
Technical field
The utility model relates to a kind of single-track tunnel inverted arch and short side wall concrete integral concreting and does not affect the construction reinforcement system of tunnel tunnel face excavation supporting normal operation, belongs to tunnel structure technical field of construction.
Background technology
Tunnel invert refers to the supporting below tunnel road surface, the short abutment wall in tunnel refers to the basis of tunnel arch wall concrete, wherein the bent sidewall within the walls in short abutment wall top is also the accurate location of two lining chassis lower curved template formwork erections, inverted arch and the construction of short abutment wall are generally first build in tunnel lining, build rear pattern plate chassis just to support on inverted arch, short abutment wall concrete is located, thus carries out building of tunnel arch wall concrete.
Because railway tunnel construction specification not only has strict demand to inverted arch to face safe distance, and tunnel invert and short abutment wall must integral concretings, filling must separate with inverted arch builds, and the maximum cross section of shearing is avoided in the position of short abutment wall top horizontal construction joint.
In order to meet railway tunnel code requirement, the current of the motor vehicles and machines of the normal excavation construction of face is not affected while ensureing the construction of inverted arch short abutment wall, at present, domestic railway tunnel inverted arch and short abutment wall are constructed and are generally all adopted inverted arch trestle construction method, while inverted arch and the construction of short abutment wall on trestle by haulage vehicle, solve bottom inverted arch and the current interference problem of short abutment wall construction & transportation.
Tunnel invert short abutment wall construction part be manually utilize little punching block or channel-section steel assembled, recycle a large amount of reinforcing bars to little punching block or channel-section steel carry out welding location and reinforce; Also there is part to adopt integral mold plate to construct, need large-scale lifting machinery such as excavator, loader to coordinate the hoisted in position carrying out template; And various forms of monolithic inverted arch mould bases obtains and applies than faster in high-speed railway and Line for Passenger Transportation, this mould bases can provide the function of the short abutment wall of inverted arch and fill concrete construction formwork, various vehicle energy normal pass can be made again, and generally carry walking function.
But for railway single tunnel, the construction of tunnel invert short abutment wall adopts these methods to do just certain difficulty, general single-track tunnel two serve as a contrast short abutment wall build after effective driving width only have 6.10 meters, and the effective driving width of railway single solid concrete roabed tunnel after the short abutment wall of tunnel double-lining is built only has 4.44 meters, after putting inverted arch trestle, the remaining width in trestle both sides and space very narrow, monolithic template and monolithic mould bases cannot use due to single-track tunnel short of width, and adopt little punching block or channel-section steel assembled, Template Location as pressed and reinforcement measure, ensure inverted arch and short abutment wall primary concreting, formwork reinforcement difficulty is large, the reinforcing activity duration is long, after reinforcing, stablizing effect is poor, and the short sidewall template of inverted arch reinforced rear tunnel excavation support construction plant equipment and vehicle can not pass through, the short abutment wall construction of inverted arch is excavated with tunnel tunnel face and supporting construction can not form parallel operations, difficulty is caused to the scientific and effective tissue of the working procedure of single-track tunnel, thus bring construction operation time long, efficiency is low, cost is high, the problems such as security risk is large.
Summary of the invention
The purpose of this utility model is just to overcome above-mentioned the deficiencies in the prior art, and a kind of special inverted arch short abutment wall Combined type sizing punching block and screw mandrel location reinforcement system of utilizing is provided, under narrow short inverted arch trestle, the short sidewall template of inverted arch is positioned and reinforced, model sheetinstallat, location and reinforcing are simply, convenient, effectively, collateral security can reach inverted arch and short abutment wall one-time-concreting by code requirement, and do not affect in the process of building at inverted arch and short side wall concrete tunnel tunnel face excavation supporting vehicle and plant equipment normal through construction method, the method is without the need to using professed machine, manually can operate, construction technology is simple, safety, economical, practical.
In order to realize above-mentioned utility model object, the technical solution adopted in the utility model is a kind of inverted arch short abutment wall Combined type sizing punching block and screw mandrel location reinforcement system, this system comprises support bar 5, transversely strengthening topmast strut 6 at the bottom of the short sidewall template of inverted arch 1, Simple steel trestle 2, positive left-hand thread adjustment jackscrew 3, short sidewall template reinforcing top hound 4, transversely strengthening, and the concreting of the short abutment wall of this inverted arch comprises interlude concrete I bottom inverted arch, the short side wall concrete II of inverted arch, fill concrete III;
Wherein, the short sidewall template 1 of inverted arch is arranged on the inverted arch place of having excavated, the short sidewall template 1 of inverted arch interlude concrete I place bottom inverted arch is provided with support bar 5 at the bottom of the transversely strengthening of horizontal arrangement, and the short sidewall template of inverted arch 1 interlude concrete I, inverted arch short side wall concrete II junction bottom inverted arch are provided with transversely strengthening topmast strut 6; Short sidewall template is reinforced top hound 4 and is arranged on transversely strengthening topmast strut 6 and the inverted arch short side wall concrete II place on inverted arch short sidewall template 1 vertical direction, and it is 33 ° with the angle of horizontal plane that described short sidewall template reinforces top hound 4; Positive left-hand thread regulates jackscrew 3 to be arranged on the short sidewall template of inverted arch 1 and reinforces with short sidewall template and push up support bar 5 at the bottom of hound 4, transversely strengthening, transversely strengthening topmast strut 6 junction, reinforces the bonding strength pushing up support bar 5 at the bottom of hound 4, transversely strengthening, transversely strengthening topmast strut 6 and the short sidewall template 1 of inverted arch in order to regulate short sidewall template; Simple steel trestle 2 is arranged on inverted arch short sidewall template 1 top; When the short side wall concrete of tunnel invert is built, by arranging Simple steel trestle 2, make the excavation supporting vehicle of face and plant equipment can normal pass on inverted arch trestle.
The steel pipe that described short sidewall template reinforces support bar 5 at the bottom of top hound 4, transversely strengthening, transversely strengthening topmast strut 6 is diameter 90mm.
The short sidewall template 1,1.5m mono-of described inverted arch saves, four joint altogether 6m, according to plant equipment situation, can four joint integral hoistings, and also artificial one can save installation; Positive left-hand thread regulates jackscrew 3 and short sidewall template to reinforce and pushes up support bar 5 at the bottom of hound 4, transversely strengthening, transversely strengthening topmast strut 6 junction, removable single reinforcing under inverted arch trestle is assembled into reinforcement system, then utilizes positive left-hand thread to regulate the position of the short sidewall template 1 of jackscrew 3 pairs of inverted arch to carry out accurate adjustment and reinforcing.
Compared with prior art, the utility model has following beneficial effect.
1. low to plant equipment configuration requirement, the short sidewall template of inverted arch and reinforce support system can single-unit or single by manually installing and spelling, without the need to using professional lifting machine.
What 2. avoid that the short side wall concrete of inverted arch builds that operation and face construct influences each other, be convenient to organize the short abutment wall construction of inverted arch and the parallel operations of face excavation supporting, improve the science of construction organization, coordinability, improve the work efficiency of constructing tunnel greatly.
3. easy to operate, template all can be installed by root in the space that inverted arch excavates under trestle by artificial by artificial segmented assembled, all formwork reinforcement support system, then forms inverted arch short sidewall template location and reinforce to support integrated body.
4. reinforce integrated system by the short sidewall template of inverted arch and location, when not affecting the construction of face excavation supporting and normally carrying out, ensure that single-track railway tunnel inverted arch and short abutment wall can by code requirement primary concreting concrete.
5., after formwork and formwork supports system has been reinforced, good integrity, is not easy produce distortion and loosen in concrete construction.
6. good economy performance, make single-track railway tunnel face excavate can with the parallel operations of inverted arch short abutment wall one-time-concreting, can significantly reduce construction organization cost, work efficiency improves greatly.
Accompanying drawing explanation
Fig. 1 is inverted arch and short sidewall template and reinforcement system front view.
Fig. 2 is for building interlude concrete bottom inverted arch.
Fig. 3 is for building the short side wall concrete of inverted arch.
Fig. 4 is for building fill concrete.
Fig. 5 is single-track railway tunnel inverted arch short side wall concrete one-time-concreting construction method flow chart.
In figure: 1, the short sidewall template of inverted arch, 2, Simple steel trestle, 3, positive left-hand thread regulates jackscrew.4, short sidewall template reinforces top hound, 5, support bar at the bottom of transversely strengthening, 6, transversely strengthening topmast strut;
Interlude concrete bottom I, inverted arch, the short side wall concrete of II, inverted arch, III, fill concrete.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As Figure 1-5, a kind of inverted arch short abutment wall Combined type sizing punching block and screw mandrel location reinforcement system, this system comprises support bar 5, transversely strengthening topmast strut 6 at the bottom of the short sidewall template of inverted arch 1, Simple steel trestle 2, positive left-hand thread adjustment jackscrew 3, short sidewall template reinforcing top hound 4, transversely strengthening, and the concreting of the short abutment wall of this inverted arch comprises interlude concrete I bottom inverted arch, the short side wall concrete II of inverted arch, fill concrete III;
Wherein, the short sidewall template 1 of inverted arch is arranged on the inverted arch place of having excavated, the short sidewall template 1 of inverted arch interlude concrete I place bottom inverted arch is provided with support bar 5 at the bottom of the transversely strengthening of horizontal arrangement, and the short sidewall template of inverted arch 1 interlude concrete I, inverted arch short side wall concrete II junction bottom inverted arch are provided with transversely strengthening topmast strut 6; Short sidewall template is reinforced top hound 4 and is arranged on transversely strengthening topmast strut 6 and the inverted arch short side wall concrete II place on inverted arch short sidewall template 1 vertical direction, and it is 33 ° with the angle of horizontal plane that described short sidewall template reinforces top hound 4; Positive left-hand thread regulates jackscrew 3 to be arranged on the short sidewall template of inverted arch 1 and reinforces with short sidewall template and push up support bar 5 at the bottom of hound 4, transversely strengthening, transversely strengthening topmast strut 6 junction, reinforces the bonding strength pushing up support bar 5 at the bottom of hound 4, transversely strengthening, transversely strengthening topmast strut 6 and the short sidewall template 1 of inverted arch in order to regulate short sidewall template; Simple steel trestle 2 is arranged on inverted arch short sidewall template 1 top; When the short side wall concrete of tunnel invert is built, by arranging Simple steel trestle 2, make the excavation supporting vehicle of face and plant equipment can normal pass on inverted arch trestle.
The steel pipe that described short sidewall template reinforces support bar 5 at the bottom of top hound 4, transversely strengthening, transversely strengthening topmast strut 6 is diameter 90mm.
The short sidewall template 1,1.5m mono-of described inverted arch saves, four joint altogether 6m, according to plant equipment situation, can four joint integral hoistings, and also artificial one can save installation; Positive left-hand thread regulates jackscrew 3 and short sidewall template to reinforce and pushes up support bar 5 at the bottom of hound 4, transversely strengthening, transversely strengthening topmast strut 6 junction, removable single reinforcing under inverted arch trestle is assembled into reinforcement system, then utilizes positive left-hand thread to regulate the position of the short sidewall template 1 of jackscrew 3 pairs of inverted arch to carry out accurate adjustment and reinforcing.
Single-track tunnel inverted arch short abutment wall one-time-concreting construction method, the method comprises following flow process:
1. according to the short sidewall template 1 of design drawing design processing inverted arch, and each tie point that Template Location reinforces support is set thereon respectively.
2. process the short sidewall template of inverted arch 1 and locate and reinforce support bar 5 at the bottom of short sidewall template reinforcing top hound 4, transversely strengthening, transversely strengthening topmast strut 6, positive left-hand thread adjustment jackscrew 3.
3. the short sidewall template of inverted arch is installed and is reinforced: after inverted arch excavation, lay Simple steel trestle 2, after inverted arch preliminary bracing has been constructed, colligation inverted arch and short abutment wall reinforcing bar, Simple steel trestle 2 utilize digging machine coordinate artificial lifting or the short sidewall template 1 of artificial installation inverted arch, after template Primary Location, constructor installs short sidewall template by root and reinforces top hound 4 in the space under inverted arch trestle, support bar 5 at the bottom of transversely strengthening, transversely strengthening topmast strut 6, form Template Location and reinforce integrated Simple reinforced support system, accurately reinforcing is located to the short sidewall template 1 of inverted arch.
4. install inverted arch short abutment wall end mould and reinforce firm, erection loop is to rubber fastening band and fix position on Side Template, longitudinal steel plate water stopper is installed, and the two-sided welding carrying out steel plate water-stopping interband guarantees that weld seam does not seep water, steel plate water stopper and formwork reinforcement firm.
5. concreting operation: through supervising engineer check formwork structure size meet design requirement qualified after, inverted arch trestle is utilized to build the short side wall concrete of inverted arch, first blowing in the middle of trestle and in the middle part of two side direction inverted arch, build middle part inverted arch concrete I, when concrete reaches bottom the short sidewall template of inverted arch, change into from the charging suitable for reading of short sidewall template, build short side wall concrete, complete inverted arch short side wall concrete II integral concreting, strengthen vibrating guarantee concrete compaction during concreting, after having built, carry out concrete curing work; After the short side wall concrete of inverted arch reaches strength of mould stripping, after removing the short sidewall template of inverted arch, trestle is built fill concrete III.
6. reach after load bearing stength, next plate inverted arch can being excavated, then Simple steel trestle 2 is advanced to the short abutment wall section of next inverted arch excavated of designing requirement at fill concrete, carry out next plate and face upward the construction of short abutment wall.
Claims (3)
1. an inverted arch short abutment wall Combined type sizing punching block and screw mandrel location reinforcement system, it is characterized in that: this system comprises support bar (5), transversely strengthening topmast strut (6) at the bottom of the short sidewall template of inverted arch (1), Simple steel trestle (2), positive left-hand thread adjustment jackscrew (3), short sidewall template reinforcing top hound (4), transversely strengthening, and the concreting of the short abutment wall of this inverted arch comprises interlude concrete I bottom inverted arch, the short side wall concrete II of inverted arch, fill concrete III;
Wherein, the short sidewall template of inverted arch (1) is arranged on the inverted arch place of having excavated, the short sidewall template of inverted arch (1) interlude concrete I place bottom inverted arch is provided with support bar (5) at the bottom of the transversely strengthening of horizontal arrangement, and the short sidewall template of inverted arch (1) interlude concrete I, inverted arch short side wall concrete II junction bottom inverted arch are provided with transversely strengthening topmast strut (6); Short sidewall template is reinforced top hound (4) and is arranged on transversely strengthening topmast strut (6) and the inverted arch short side wall concrete II place on the short sidewall template of inverted arch (1) vertical direction, and it is 33 ° that described short sidewall template reinforces top hound (4) with the angle of horizontal plane; Positive left-hand thread regulates jackscrew (3) to be arranged on the short sidewall template of inverted arch (1) and reinforces with short sidewall template and push up support bar (5) at the bottom of hound (4), transversely strengthening, transversely strengthening topmast strut (6) junction; Simple steel trestle (2) is arranged on the short sidewall template of inverted arch (1) top.
2. a kind of inverted arch short abutment wall Combined type sizing punching block according to claim 1 and screw mandrel location reinforcement system, is characterized in that: described short sidewall template reinforces the steel pipe that at the bottom of top hound (4), transversely strengthening, support bar (5), transversely strengthening topmast strut (6) are diameter 90mm.
3. a kind of inverted arch short abutment wall Combined type sizing punching block according to claim 1 and screw mandrel location reinforcement system, it is characterized in that: the short sidewall template of described inverted arch (1), 1.5m mono-saves, four joints 6m altogether, according to plant equipment situation, can four joint integral hoistings, also artificial one can save installation.
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| CN201420716079.3U CN204344136U (en) | 2014-11-25 | 2014-11-25 | A kind of inverted arch short abutment wall Combined type sizing punching block and screw mandrel location reinforcement system |
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| CN201420716079.3U CN204344136U (en) | 2014-11-25 | 2014-11-25 | A kind of inverted arch short abutment wall Combined type sizing punching block and screw mandrel location reinforcement system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533450A (en) * | 2014-11-25 | 2015-04-22 | 中铁十八局集团有限公司 | One-time-concreting construction method of inverted arch low wall of single-track tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533450A (en) * | 2014-11-25 | 2015-04-22 | 中铁十八局集团有限公司 | One-time-concreting construction method of inverted arch low wall of single-track tunnel |
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