CN209293068U - A kind of open trench tunnel falsework system - Google Patents

A kind of open trench tunnel falsework system Download PDF

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Publication number
CN209293068U
CN209293068U CN201821852056.XU CN201821852056U CN209293068U CN 209293068 U CN209293068 U CN 209293068U CN 201821852056 U CN201821852056 U CN 201821852056U CN 209293068 U CN209293068 U CN 209293068U
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China
Prior art keywords
template
construction
falsework
side wall
falsework system
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CN201821852056.XU
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Inventor
马彦驰
刘继鹏
庞前凤
熊文标
汪良
徐小燕
唐建文
王新源
刘流
刘红记
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China Railway 22nd Bureau Group Co Ltd
China Railway 22nd Bureau Group Urban Rail Engineering Co., Ltd.
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China Railway 22nd Bureau Group Co Ltd
China Railway 22nd Bureau Group Urban Rail Engineering Co., Ltd.
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Abstract

The utility model discloses a kind of open trench tunnel falsework system and constructions, including side wall base angle mould template;Side wall template;Upper chamfering formwork;Roof plate template;The side wall shuttering supporting uses single side formwork support system;Top plate is using full hall bowl buckle scaffold;The main structure template of the falsework system is all made of 2440mm × 1220mm, thick 15mm clad can wood plywood, and template seam is only starched with only slurry item.A kind of open trench tunnel falsework system of the utility model and construction combine practical construction experience, and meet the regulation of relevant criterion, the two combines, and can adapt to more special construction environment, and accomplishes that structural stability is good, shortens construction period, reduces construction cost after construction.

Description

A kind of open trench tunnel falsework system
Technical field
The utility model relates to technical field of building construction, and in particular to a kind of open trench tunnel falsework system.
Background technique
In the prior art, open trench tunnel many places are in the area that geographical environment intersects, meanwhile, it is more special for certain positions Open trench tunnel, construction technology and open trench tunnel falsework system are more complicated.If tunnel is located at Basic Farmland Conservation Zones, Without permanent residence house, ground object is mainly sheep raising, pig farm house.And the longer open trench tunnel of constructing tunnel segment length, It is even more a test for construction team.In addition, addressing context is also the factor for needing to consider, if geology is mainly the 4th system Artificial earth fill, alluviation silty clay, completely decomposed, severely-weathered siltstone, carbonaceous slate.Underground water mainly with Quaternary pore water and Based on Karst-fissure water, the main preservation of pore ground water is in fill stratum, layer of sand, and water is abundant, and hydraulic connection is unobstructed, has pressure-bearing Property;Karst-fissure water is stored in the solution crack of limestone development, in solution cavity, water influenced by the development degree and its connectivity of karst and It changes greatly, Karst-fissure water has pressure-bearing property, and surface water and underground water team concrete structure have weak erosive, to armored concrete Reinforcing bar in structure has microcorrosion.There is rift structure process, rift structure is predominantly extensively from fracture, and fault tectonic location is easily Water burst, prominent mud etc. occurs to adversely affect construction.Limestone location belongs to covered karst area, and karst belongs to strong development area, except molten Hole development is outer, is also distributed a large amount of alluvium, and superstratum is mostly clay, silty clay, coarse gravel, circle gravel soil etc., with Basement rock face contact is mostly soft modeling~plastic shape clay or silty clay, and since level of ground water is higher, Quaternary Strata is mostly by underground Water influences, and intensity is lower, easily causes surface collapse in the construction process, complexity develop due to karst in space and does not know Property.
As stated above, open trench tunnel falsework system in the prior art and construction are temporarily unable to satisfy construction It is required that open trench tunnel structural stability is poor after construction.
Utility model content
Open trench tunnel template that is high, meeting special construction environment that the purpose of the utility model is to provide a kind of structural stabilities Support system.
To achieve the goals above, the utility model provides the following technical solutions:
A kind of open trench tunnel falsework system disclosed by the utility model, comprising:
Side wall base angle mould template;
Side wall template;
Upper chamfering formwork;
Roof plate template;
The side wall shuttering supporting uses single side formwork support system;
Top plate is using full hall bowl buckle scaffold;
The main structure template of the falsework system is all made of 2440mm × 1220mm, thick 15mm clad can wood plywood, Template seam is only starched with only slurry item.
Further, the bowl fastening type full hall scaffold horizontal layout form are as follows: top and bottom are adjustable using KTC-45 Formula jacking, and the upright bar transfer 0.6m of the bowl fastening type full hall scaffold, upright bar advance 0.6m;
The upright bar horizon bar step pitch is 1200mm;
Surrounding and the internal continuous vertical, horizontal bridging of setting, bridging on the outside of the frame body of the bowl fastening type full hall scaffold With 45 °~60 ° of ground elevation, bridging width should be 5.0~8.0m;
Horizontal cross brace upper, middle and lower lays three, is laid in horizontal bar of sweeping the floor positioned at one of horizontal cross brace of bottom Elevation location, the elevation location of top cross bar is laid in positioned at one of horizontal cross brace of the top, and centre is laid in together Lower horizontal cross brace middle position.
Further, the template of the bottom plate of the falsework system is hanging template in addition to the end mould at construction joint.
Further, exterior waterproof coating is set between the side wall and building enclosure of the falsework system.
Further, the top plate thickness of the falsework system is 700mm, bracket, template system using Φ 48 × 3.5mm total sub-semigroup, plate use clad can wood plywood 2440mm × 1220mm, thickness 15mm.
Further, the active well top plate thickness of the falsework system is 800mm, and bracket, template system use Φ 48 × 3.5mm total sub-semigroup, plate use clad can wood plywood 2440mm × 1220mm, thickness 15mm.
Further, at the bottom plate, top plate and side wall transverse direction construction joint of the falsework system, there is end head formwork.
In the above-mentioned technical solutions, a kind of open trench tunnel falsework system of the utility model and construction combine reality Border construction experience, and meet the regulation of relevant criterion, the two combines, and can adapt to more special construction environment, and accomplish Structural stability is good after construction, shortens construction period, reduces construction cost.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only to record in the utility model Some embodiments be also possible to obtain other drawings based on these drawings for those of ordinary skill in the art.
Fig. 1 is a kind of open excavation section falsework system of open trench tunnel falsework system provided by the embodiment of the utility model The structural schematic diagram of system;
Fig. 2 is a kind of active well falsework system of open trench tunnel falsework system provided by the embodiment of the utility model The structural schematic diagram of system;
Fig. 3 is a kind of rack template cast-in-place construction of open trench tunnel falsework system provided by the embodiment of the utility model Structural schematic diagram one;
Fig. 4 is a kind of rack template cast-in-place construction of open trench tunnel falsework system provided by the embodiment of the utility model Structural schematic diagram two;
Fig. 5 is a kind of rack template cast-in-place construction of open trench tunnel falsework system provided by the embodiment of the utility model Structural schematic diagram three;
Fig. 6 is a kind of rack template cast-in-place construction of open trench tunnel falsework system provided by the embodiment of the utility model Structural schematic diagram four;
Fig. 7 is that a kind of side wall formwork jumbo of open trench tunnel falsework system provided by the embodiment of the utility model is cast-in-place The structural schematic diagram one of construction;
Fig. 8 is that a kind of side wall formwork jumbo of open trench tunnel falsework system provided by the embodiment of the utility model is cast-in-place The structural schematic diagram two of construction;
Fig. 9 is that a kind of side wall formwork jumbo of open trench tunnel falsework system provided by the embodiment of the utility model is cast-in-place The structural schematic diagram three of construction;
Figure 10 is that a kind of side wall formwork jumbo of open trench tunnel falsework system provided by the embodiment of the utility model is existing Pour the structural schematic diagram four of construction;
Figure 11 is that a kind of side wall formwork jumbo of open trench tunnel falsework system provided by the embodiment of the utility model is existing Pour the structural schematic diagram five of construction;
Figure 12 is that a kind of side wall formwork jumbo of open trench tunnel falsework system provided by the embodiment of the utility model is existing Pour the structural schematic diagram six of construction.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution of the utility model, below in conjunction with attached drawing pair The utility model is further detailed.
Embodiment one:
Referring to shown in Fig. 1 to Fig. 2, a kind of open trench tunnel falsework system that the embodiments of the present invention one provide, Include:
Side wall base angle mould template;
Side wall template;
Upper chamfering formwork;
Roof plate template;
Side wall shuttering supporting uses single side formwork support system;
Top plate is using full hall bowl buckle scaffold;
The main structure template of the falsework system is all made of 2440mm × 1220mm, thick 15mm clad can wood plywood, Template seam is only starched with only slurry item.
Preferably, above-mentioned bowl fastening type full hall scaffold horizontal layout form are as follows: top and bottom are adjustable using KTC-45 Formula jacking, and the upright bar transfer 0.6m of bowl fastening type full hall scaffold, upright bar advance 0.6m;
Upright bar horizon bar step pitch is 1200mm;
Surrounding and the internal continuous vertical, horizontal bridging of setting, bridging and ground on the outside of the frame body of bowl fastening type full hall scaffold 45 °~60 ° of face inclination angle, bridging width should be 5.0~8.0m;
Horizontal cross brace upper, middle and lower lays three, is laid in horizontal bar of sweeping the floor positioned at one of horizontal cross brace of bottom Elevation location, the elevation location of top cross bar is laid in positioned at one of horizontal cross brace of the top, and centre is laid in together Lower horizontal cross brace middle position.
Preferably, the template of the bottom plate of above-mentioned falsework system is hanging template in addition to the end mould at construction joint.
Preferably, exterior waterproof coating is set between the side wall and building enclosure of above-mentioned falsework system.
Preferably, the top plate thickness of above-mentioned falsework system is 700mm, bracket, template system using Φ 48 × 3.5mm total sub-semigroup, plate use clad can wood plywood 2440mm × 1220mm, thickness 15mm.
Preferably, the active well top plate thickness of above-mentioned falsework system is 800mm, and bracket, template system use Φ 48 × 3.5mm total sub-semigroup, plate use clad can wood plywood 2440mm × 1220mm, thickness 15mm.
Preferably, at the bottom plate, top plate and side wall transverse direction construction joint of above-mentioned falsework system, there is end head formwork.
Embodiment two:
A kind of construction of open trench tunnel falsework system disclosed by the utility model, comprising:
Rack template cast-in-place construction;
Side wall formwork jumbo cast-in-place construction.
Rationally to utilize human and material resources, sequence of construction is scientifically arranged, the interference between each process is reduced, guarantees engineering Construction is gone on smoothly, and effectively prevent the cracking of concrete, at the same according to structure stress, avoid the principle of attached entrance, will lead Body structure is vertically divided 3 layers (bottom plate, side wall and mid-boards, top plate), longitudinal to give by construction technology (template lining trolley) length Workshop section, every standard segment length 12m make the appropriate adjustments when meeting subsiding crack.Active well, transformer room, jet blower, communication Dong Shichu It is constructed using support cast-in-place form, construction segment length is configured according to cavern's size.
The vertical layered principle of main structure:
A, it is smaller and convenient at construction by shearing to be located at structure for construction joint;
B, the setting of construction joint should meet Bar Anchorage requirement, meet working procedure demand, and can guarantee construction quality;
C, main structure vertical construction joint is determined according to construction method, and twice horizontal construction joint setting up and down is respectively set The 0.5m below the above 0.3m of bottom plate chamfering, top plate armpit angle.
This engineering template and rack construction are broadly divided into two kinds according to operating condition, construction stream on reinforced concrete structure Journey is respectively as follows:
Referring to shown in Fig. 3 to Fig. 6, it is preferred that the work progress of above-mentioned rack template cast-in-place construction are as follows:
A1, bottom slab concreting;
A2, mid-board is poured;
A3, binding side wall reinforcing bar;
A4, installation side wall template;
A5, side wall concrete is poured;
A6, binding roof steel bar;
A7, concrete roof is poured.
Wherein, above-mentioned support system sets up installation: preparation → selection ingredient → setting-out snap the line → upright bar → in length and breadth To horizon bar → bar of vertically and horizontally sweeping the floor → set the stupefied installation → bracket of bridging → main Lenz inspect for acceptance the installation of qualification → template → It is whole to check and accept.
Support system is removed: it removes: template → main Lenz is stupefied → and bridging → vertically and horizontally horizon bar → bar of vertically and horizontally sweeping the floor → upright bar → placing of material is neat.
Referring to shown in Fig. 7 to Figure 12, it is preferred that the work progress of above-mentioned side wall formwork jumbo cast-in-place construction are as follows:
B1, bottom slab concreting;
B2, binding mid-board;
B3, side wall reinforcing bar;
B4, trolley are in place;
B5, side wall, mid-board concrete are poured;
B6, the rim of a bowl support system are set up;
B7, binding roof steel bar, pour concrete roof.
Since exterior waterproof coating being arranged between side wall and building enclosure, for this purpose, the support system of side wall template and mid-board Support top system considers that side wall and mid-board pour concrete using tunnel side chemise formwork jumbo two, and left and right line is parallel simultaneously together Construction.It all should be noted that tunnel clearance when trolley is in place and guarantee two lining concrete face geometric dimensions, when trolley is in place, have to measure Unwrapping wire determines that middle line and side wall top mark are high, meanwhile, it to be controlled by longitudinal slope, horizontal slope, prevent trolley deviation and inclination.Trolley is in place It should pay attention to wall top and plug side, blocking plate answers fixation stable and do not injure splash guard.When being poured concrete, arch and abutment wall Perfusion seam be most weak in structure.The concrete face that abutment wall is first constructed should make plucking and dabbing processing, and check trolley and abutment wall Airtight quality, faulting of slab ends and spillage at the wall joint that prevents from keeping to the side, specified value of the filling concrete speed no more than stencil design.
Wherein, in addition to above-mentioned construction, further includes:
Concrete placings technique
Structural slab body concrete takes layering, segmentation to pour.Concrete In Structures are using " gradient, thin concrete lift push away in proper order Into primary to top " construction method reduce concrete exposure, and increasing placing intensity to shorten the measures such as the duration of pouring It prevents to be poured cold seam, improves the waterproofing and anti-leakage ability of structural concrete.Notice that side wall and mid-board blowing want sync equalizing Rise, prevent side blowing excessive, keeps template inclined to side top.
(1) bottom, concrete roof pour sequence
Using concrete mixer placement layer by layer, concrete is promoted from center to both ends staged, and continuous placing, every layer pours Thickness is no more than 300mm.
(2) side wall concrete pours
One-time-concreting height is controlled using " inclined plane delamination construction method ", accomplishes to be layered blanking, layering is made firm by ramming, and circulation is whole to be pushed away Into every thickness degree 300mm is advisable.Side wall, top plate are perfused using concrete pump truck.
To vertical middle standing pillar, using a concrete pump truck, hierarchical sequence is perfused from bottom to top.
(3) mid-board 400mm is thick, and every layer pours thickness and is advisable no more than 300mm.
(4) poring rate, general 30m3/h or so are controlled, in order to avoid the heat of hydration is excessive, wallboard is caused to crack.
(5) it constructs to board wall, to prevent concrete from cracking, the noon for avoiding hot weather as far as possible is poured, and enters mould with reduce concrete Temperature." warehouse, compacting, troweling " technique is carried out before final set after concrete roof perfusion, concrete setting initial stage had both been avoided to generate Contraction crack, and guarantee structure exterior waterproof coating be firmly bonded.During concrete pouring, concrete should be made by the regulation of testing regulations Test specimen.
Exit passageway setting
In construction period, site operation personnel must enter foundation pit construction operation by foundation pit lower channel, to ensure to make Deep pit monitor above and below industry personnel, it is therefore necessary to which the lower channel stair for making safety standard are intended in active well and tunnel standard paragraphs Ladder cage at 1 is respectively set, from ground bypass structure bottom plate, above and below construction personnel.
After first segment construction of bottom plates, the interim ladder cage of decentralization construction, selecting specification is (3600 × 1700 × 2500) Box deep foundation pit construction pedestrains safety Type B ladder cage.
Ladder cage bottom is placed on structure base slab, is fixed on bottom plate using 4 Φ 12 by first segment ladder cage is smooth, then Second, third section ladder cage is sequentially placed until earth's surface.
Vertically one of 10# channel steel of every 5m setting is fixed on fender post ladder cage, and main structure side is fixed on after the completion of structure On wall, pre-buried 2 blocks of 300 × 300mm steel plates are fixed as fixed point or use 16 expansion bolt of Ф when abutment wall is constructed.
In the above-mentioned technical solutions, a kind of open trench tunnel falsework system of the utility model and construction combine reality Border construction experience, and meet the regulation of relevant criterion, the two combines, and can adapt to more special construction environment, and accomplish Structural stability is good after construction, shortens construction period, reduces construction cost.
It is above that certain exemplary embodiments of the utility model are only described by way of explanation, undoubtedly, for Those skilled in the art can be with a variety of different without departing from the spirit and scope of the utility model Mode is modified described embodiment.Therefore, above-mentioned attached drawing and description are regarded as illustrative in nature, and should not be construed as Limitation to the utility model claims protection scope.

Claims (7)

1. a kind of open trench tunnel falsework system characterized by comprising
Side wall base angle mould template;
Side wall template;
Upper chamfering formwork;
Roof plate template;
The side wall shuttering supporting uses single side formwork support system;
Top plate is using full hall bowl buckle scaffold;
The main structure template of the falsework system is all made of 2440mm × 1220mm, thick 15mm clad can wood plywood, template Seam is only starched with only slurry item.
2. a kind of open trench tunnel falsework system according to claim 1, which is characterized in that the bowl fastening type expires hall foot Hand cradle horizontal layout form are as follows: top and bottom use the adjustable jacking of KTC-45, and the bowl fastening type full hall scaffold is vertical Bar transfer 0.6m, upright bar advance 0.6m;
The upright bar horizon bar step pitch is 1200mm;
Surrounding and the internal continuous vertical, horizontal bridging of setting, bridging and ground on the outside of the frame body of the bowl fastening type full hall scaffold 45 °~60 ° of face inclination angle, bridging width should be 5.0~8.0m;
Horizontal cross brace upper, middle and lower lays three, and the absolute altitude of horizontal bar of sweeping the floor is laid in positioned at one of horizontal cross brace of bottom Position is laid in the elevation location of top cross bar positioned at one of horizontal cross brace of the top, and centre is laid in together to be lauched Flat bridging middle position.
3. a kind of open trench tunnel falsework system according to claim 1, which is characterized in that the falsework system The template of bottom plate be hanging template in addition to the end mould at construction joint.
4. a kind of open trench tunnel falsework system according to claim 1, which is characterized in that the falsework system Side wall and building enclosure between exterior waterproof coating is set.
5. a kind of open trench tunnel falsework system according to claim 1, which is characterized in that the falsework system Top plate thickness be 700mm, bracket, template system use 48 × 3.5mm of Φ total sub-semigroup, and plate is using the conjunction of clad can wood glue Plate 2440mm × 1220mm, thickness 15mm.
6. a kind of open trench tunnel falsework system according to claim 1, which is characterized in that the falsework system Active well top plate thickness be 800mm, bracket, template system use 48 × 3.5mm of Φ total sub-semigroup, and plate uses clad can Wood plywood 2440mm × 1220mm, thickness 15mm.
7. a kind of open trench tunnel falsework system according to claim 1, which is characterized in that the falsework system Bottom plate, at top plate and side wall transverse direction construction joint, there is end head formwork.
CN201821852056.XU 2018-11-09 2018-11-09 A kind of open trench tunnel falsework system Active CN209293068U (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109339100A (en) * 2018-11-09 2019-02-15 中铁二十二局集团轨道工程有限公司 A kind of open trench tunnel falsework system and construction
CN110080299A (en) * 2019-05-10 2019-08-02 成都建工路桥建设有限公司 A kind of shallow embedding mountain tunnel open-cut engineering method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109339100A (en) * 2018-11-09 2019-02-15 中铁二十二局集团轨道工程有限公司 A kind of open trench tunnel falsework system and construction
CN110080299A (en) * 2019-05-10 2019-08-02 成都建工路桥建设有限公司 A kind of shallow embedding mountain tunnel open-cut engineering method

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