Tunnel ditch cable trench gang form hangs rotatable erection unit and construction method thereof
Technical field
The present invention relates to tunnel ditch cable trench equipment technical field, be specifically related to tunnel ditch cable trench gang form and hangRotatable erection unit and construction method thereof.
Background technology
In prior art, ditch cable trench is the important component part in modern tunnel as tunnel appurtenant work, its matter of constructingAmount directly affects the image of tunnel integral construction and moulding, but because on-the-spot practice of construction needs, ditch cable trench is generally at tunnelThe middle and later periods of road construction just starts to perform, and this just causes, and cable trench construction period pressure in ditch is large, construction quality requirement is high,And due to the needs that in hole, follow-up construction is transported, ditch cable trench construction space is often subject to strict restriction. With China blueChongqing railway WEST QINLING tunnel ditch cable trench construction is example, and Lan Yu Railway WEST QINLING Tunnel Engineering total length 28.236km, isThe second long tunnel in China railway construction history is at present also that China TBM construction section maximum, distance are the longestRailway tunnel, adopts drilling and blasting method and TBM driving associating construction, and TBM driving section adopts continuous belt conveyer mucking and secondary liningParallel operations, the stores van transport construction material that 25t diesel locomotive traction marshalling is in column, four rail two-wire rail Transportation Models.But, because of early stage TBM driving, synchronization lining construction task heavier, and be subject in hole 6 synchronization lining trolley travelings, TBMIn hole, tear large part after machine open and transport the requirement to tunnel vertical clearance, ditch cable trench is constructed until the machine of tearing open in TBM hole completes, twoAfter inferior lining construction completes, start organizing construction, during this period in hole, the follow-up work such as service channel excavation is synchronously carried out, and in hole, transportsDefeated cannot interruption, causes that duration pressure is large, ditch cable trench construction must meet hole inner orbit transport wanting current headroomAsk, therefore ditch cable trench construction must have one-time-concreting moulding, formwork is located fast, fast, the operation sky of template turnover ownBetween the feature such as little.
Chinese patent CN204266233U discloses a kind of tunnel ditch cable trough construction template positioner, comprises multipleThe locator card of laying from front to back, multiple described locator cards are all laid in the forming panel top of constructed ditch cable trench; InstituteConstruction ditch cable trench is to be laid in top, coagulation earthen platform and the groove for draining or laying cable, and the quantity of described groove isN, described coagulation earthen platform and multiple described groove are all laid along the direction extending longitudinally of constructed Railway Tunnel, whereinN is positive integer and N >=2; It is fixed that described forming panel comprises that N respectively carries out the combined type of molding construction to N described grooveSection mould plate and the lateral wall of coagulation earthen platform is carried out to the lateral wall typified form of molding construction, N described Combined type sizing templateAll lay along the direction extending longitudinally of constructed Railway Tunnel with lateral wall typified form; The structure of multiple described locator cardsAll identical, described locator card comprises that the crossbeam and the N that together described forming panel top are positioned are individual respectively to described in NThe column that Combined type sizing template bottom positions, described crossbeam is along the transverse width direction cloth of constructed Railway TunnelIf described crossbeam and N described column is all laid on same plane, N described column is installed in crossbeam bottom; InstituteState on forming panel and be provided with and arrange the second screw mandrel of installing for multiple described locator cards respectively, the crossbeams of each described locator card moreAll be arranged on described forming panel top by described the second screw mandrel of a row; Described the second screw mandrel of every row includes N group peace respectivelyBe contained in N the second screw mandrel in described Combined type sizing template, described in every group, the second screw mandrel includes two and is arranged on respectively groupThe second screw mandrel of top, the box-like typified form left and right sides; N in described locator card, described column inserts respectively N instituteStating inner and its bottom of Combined type sizing template props up respectively and withstands on N, described Combined type sizing template bottom. This patent does not haveSolution formwork location in ditch cable trench construction is slow, template is had enough to meet the need slow problem, and can not meet hole inner orbit transport to leading toThe requirement of row headroom and ditch cable trench construction need to have the requirement of one-time-concreting moulding.
Summary of the invention
In order to overcome defect of the prior art, the invention provides tunnel ditch cable trench gang form and hang rotatable installation and establishStandby and construction method, in the time that early stage, TBM driving, synchronization lining construction task were heavier, in hole, 6 synchronization lining chassis are walkedRow, can meet in TBM hole, tear machine open after large part transport the requirement to tunnel vertical clearance, construct until TBM at ditch cable trenchIn hole, tear that machine completes open, Second Lining Construction is while starting organizing construction after completing,, service channel excavates and synchronizes with follow-up work in the hole inCarry out, in hole, transport need not be interrupted, and meets the requirement of hole inner orbit transport to current headroom.
The present invention is achieved through the following technical solutions: tunnel ditch cable trench gang form hangs rotatable erection unit, bagDraw together gang form and for lifting the crane of gang form, described gang form comprises at least two above mould bases that longitudinally arrangeLongeron, described mould bases longeron and the cable trough cover boards template, the first cable trough side form, second that laterally be arranged in parallel in orderCable trough side form, the first ditch side form, the second ditch side form, ditch lid template die plate and be arranged on outside side form be fixedly connected with,Described cable trough cover boards template is with first cable trough side form is adjacent is fixedly connected with, described the second ditch side form and ditch lid template die plateAdjacent being fixedly connected with, the end of each described mould bases longeron is connected with the extensible canopy one end that is provided with position fixing handle, described extensible canopyThe other end be connected with and be provided with cambered surface fixed block, described cambered surface fixed block is provided with extensible canopy fixed handle, described mould bases longeronAbove between the first cable trough side form and the second cable trough side form and between the first ditch side form and the second ditch side form, establishing respectivelyHave mould bases crossbeam, described the first cable trough side form is provided with the first cable trough side form boom hole and slideway, on described mould bases longeron, establishesThere are the second cable trough side form boom hole and slideway, the first ditch side form boom hole and slideway, the second ditch side form boom hole and cunningRoad and knockout pin abutment sleeve, described ditch lid template die plate is provided with ditch lid template die plate boom hole and slideway, described mould bases crossbeamBe provided with several spacing compressor arm fixing holes, described mould bases longeron and the vertical setting mutually of mould bases crossbeam, described mould bases crossbeamUpper several mould bases hangers, between adjacent described mould bases hanger, distance equates, in described knockout pin abutment sleeve, is provided with locationBar and knockout pin, be set with spacing compression sliding hanger rod, institute in the spacing compressor arm sliding sleeve arranging on described mould bases longeronState spacing compression sliding hanger rod and be provided with spacing compression wing plate, described spacing compression wing plate is by spacing compression pin and the first cableGroove side form is connected with the side mould limiting otic placode on the second cable trough side form, described the first cable trough side form and the second cable trough side formOn template suspension rod tighten nut by template and be fixedly connected with clamp nut under template through mould bases longeron respectively, described limitThe top of position compressor arm sliding sleeve is provided with the spacing nut that is fixed for adjusting spacing compression operating grip position, described inThe end of side form and mould bases crossbeam is provided with side form chute, and described side form chute is connected with mould bases longeron by side form set bolt,Described template suspension rod is provided with the Template Location scale connecting by Template Location pin, and described side form is provided with side form boatswain chair and sideMould is fixed otic placode, and the fixing otic placode of described side form is connected with construction abutment wall basis by expansion bolt, described the first cable trough side form,The second cable trough side form, the first ditch side form, the second ditch side form, ditch lid template die plate and be arranged on outside side form on establishThere is the longitudinal connecting bolt of several regularly arranged templates hole to be connected with template;
Described crane comprises the vehicle-mounted counterweight being arranged on car body, crane column and the generator that two covers be arranged in parallel, described carBelow body, be provided with road wheel, described crane column centre position is provided with walking beam, and described walking beam is provided with by electric wire and sends outMotor connects and does the electric hoist of back and forth movement along walking beam direction, and described electric hoist is provided with chain sling hook, described walking beam withThe link downside of crane column is provided with the spring connecting by steady pin, and the end of described walking beam is provided with bulkhead, described inThe top of crane column is provided with fixed head, and described fixed head is connected with connecting plate, and described connecting plate is provided with rotating shaft, described in turnAxle is connected with one end of pull bar, and the other end of described pull bar is fixed on walking beam, described crane column and the opposing side of walking beamTo being provided with the first cross-brace, the centre position of described the first cross-brace is connected with second cross-brace one end, described the second cross-braceThe other end be packed on car body through vehicle-mounted counterweight, the side of described crane column is provided with the 3rd cross-brace, described the 3rd obliqueDagger is fixedly connected with floor.
Further, the end of described spacing compression sliding hanger rod is provided with anti-drop device.
Further, the junction of described the first cable trough side form and the second cable trough side form is provided with anti-overflowing steel plate strip.
Further, described generator bottom is provided with yielding rubber plate with vehicle-mounted counterweight junction.
Further, described generator is gasoline engine generator, and the power of described gasoline engine generator is 8kw.
Further, described crane column is provided with several floors, and the interval between adjacent described floor equates.
Further, described generator is provided with guard rail.
Further, described guard rail is wire mesh cage structures.
The present invention also provides a kind of construction method that uses tunnel ditch cable trench gang form to hang rotatable erection unit, itsBe characterised in that, said method comprising the steps of:
Step 1, to the abutment wall basis basal plane cleaning in tunnel, after the driving tunnel moulding of Tunnel Engineering, carries out the initial stage successivelySupporting, inverted arch prefabricated section are mated formation, inverted arch prefabricated section bottom pea gravel concreten is filled, inverted arch prefabricated section dual-side foundation of wall coagulationThe construction of earthen backfill, abutment wall base concrete, elevation is to designing absolute altitude at the bottom of ditch, the Second Lining Construction ditch cable trench in tunnelConstruction is taking the abutment wall basis that performed and secondary lining concrete surface as basic,
Step 2, measures unwrapping wire, carries out the first unwrapping wire and unwrapping wire for the second time, at abutment wall on the lining cutting side wall of having constructedUpper the 3rd unwrapping wire in basis and the 4th unwrapping wire, wherein, the graticule of the first unwrapping wire is for locating template cambered surface fixed block; The second unwrapping wireGraticule for the high process control of ditch cable trench top of concrete; The graticule of third direction is for the control of template longitudinal register; TheThe graticule of four unwrapping wire is for the expansion bolt location of side mould, and the graticule of the graticule of the first unwrapping wire and the 3rd unwrapping wire is for ditch electricityThe control of cable groove elevation, coordinate and straight degree, it is auxiliary that the graticule of the graticule of the second unwrapping wire and the 4th unwrapping wire has been used for concrete formationHelp quality control;
Step 3. is carried out reinforcement fabrication and installation;
Step 4, carries out earthing or grounding means and drainpipe and installs;
Step 5, carries out template assembling outward at Tunnel, by the template assembly installation in position processing with carry out coarse adjustment, templateAssembly carries out Assembling outside the hole, and the parts that need Site Welding are that Template Location pin, side mould limiting otic placode and spacing compression are slidedSuspension rod positions welding according to position location, after formwork integral has been assembled, prepares to lift into hole to use; Template coarse adjustment bagDraw together after formwork integral lifting puts in place, move forward and backward template and the smooth-going overlap joint of ditch cable trench of having constructed, move left and right template and make oftenGroup 3 position bars of template and knockout pin all drop on the graticule of the 3rd unwrapping wire; Extract extensible canopy out and its end fixing device is embeddedThe interior also closed extensible canopy fixed handle of cambered surface fixed block preformed groove; Horizon rule is placed on to mould bases end face, and rotation adjusted position bar is with de-Tringle declines until horizon rule bubble is all placed in the middle after making mould bases increase, and screw-extensible canopy position fixing handle, realizes formwork integral thickAdjust;
Step 6, carries out accurate adjustment and cleaning to the template through coarse adjustment, and template fine adjusting comprises the first cable trough side form, secondThe template suspension rod of cable trough side form, the first ditch side form, the second position, side form place, ditch all slide into this place's pattern hole outsideSide, realizes template closure, and Template Location scale two ends preformed hole is inserted and lays respectively at the first cable trough side form, the second ditchIn Template Location pin in side form template, make formation of concrete headroom meet ditch cover plate, cable trough cover boards to ditch cable trenchHeadroom; Clamp nut position under clamp nut on adjusting template, template, adjust after template height puts in place, carry out fastening, pointDo not descend the spacing pressure between adjustment mould plate the first cable trough side form, the second cable trough side form, the first ditch side form, the second ditch side formTight bar sliding sleeve, buckles in side mould limiting otic placode preformed groove spacing compression pin, and the fastening spacing nut that is fixed, preventsThe first cable trough side form in template, the second cable trough side form, the first ditch side form, the second ditch side form are in concretingIn process, there is floating or skew; Behind the second side form location, ditch, regulate ditch lid template die Board position to make it and the second ditch sideThe closely connected rear fastening spacing nut that is fixed of mould, slides onto side form to the inside template bottom and builds moulding along side form chuteAbutment wall basis closely connected after, fastening side form set bolt, and expansion bolt is carried out to side form through the fixing otic placode of side form and fix;
Step 7, the template of carrying out between group and group after template fine adjusting completes is longitudinally connected, after moulding groove is smooth-going, to processThe template brushing releasing agent of accurate adjustment;
Step 8, concreting, assembles more than 5 groups in template, carries out concreting work, and concrete transportation is to executingBehind work scene, be directly conveyed in template by shuttle groove;
Step 9, carries out maintenance to the concrete of building, to concrete curing 4h;
Step 10, the concrete after maintenance carries out the demoulding, takes off Template Location scale, unclamps template and tightens nut, templateLower clamp nut and the spacing nut that is fixed, mention template stopping means by spacing compression operating grip, by spacing compressionPin departs from the preformed groove of side mould limiting otic placode; Unclamp the expansion bolt of side form, side form set bolt, the fixing otic placode of side form position,Sleiding form moves laterally, side form and formation of concrete emaciated face from; Tapping template suspension rod make template the first cable trough side form,The second cable trough side form, the first ditch side form, the second ditch side form and ditch lid template die plate the template suspension rod of totally 5 positions, place are completePortion slides into the inner side of this place's pattern hole, and template side and formation of concrete emaciated face drive from, backspin-backstay and knockout pinEntirety mould bases rise, make template bottom surface and formation of concrete emaciated face from; Each side template and formation of concrete emaciated face, from rear, are unclampedExtensible canopy fixed handle, regains extensible canopy, adopts the gantry crane being drawn by diesel locomotive that this group formwork integral is hung and gone to downOne position recycles;
Step 11, concrete carries out, after follow-up maintenance, hanging while turning, crane formwork integral is sling after traveling electric blockClosely connected to template and crane, with chain lock, template and crane column are connected and fixed to electric block and adopt 1 8kW gasoline to send outMotor provides power.
Compared with prior art, superior effect is: the simple in structure and fixation of the present invention, and in ditch cable trench constructionThe features such as energy one-time-concreting moulding, formwork location is fast, fast, the working space of template turnover own is little, are ensureing safe prerequisiteUnder, improve lifting efficiency, shorten the construction period.
Brief description of the drawings
Fig. 1 is the top view of ditch of the present invention cable trench gang form;
Fig. 2 be in Fig. 1 along A-A to structure cutaway view;
Fig. 3 be in Fig. 1 along B-B to structure cutaway view;
Fig. 4 is the structure enlarged drawing of the cable trough side form in Fig. 1;
Fig. 5 is the structure enlarged drawing of the ditch side form in Fig. 1;
Fig. 6 is the structure enlarged drawing of the side form in Fig. 1;
Fig. 7 is the front view of crane described in the present invention;
Fig. 8 be in Fig. 7 along C-C to cutaway view;
Fig. 9 is that tunnel ditch cable trench gang form hangs the on-the-spot view that uses of rotatable erection unit;
Figure 10 is the workflow diagram of construction method of the present invention;
Figure 11 is the schematic diagram of the unwrapping wire position of construction method of the present invention.
Reference numeral is as follows:
1-cambered surface fixed block, 2-extensible canopy fixed handle, 3-extensible canopy, 4-position fixing handle, 5-Template Location scale, 6-templateAlignment pin, 7-backstay and knockout pin, 8-side form chute, 9-side form set bolt, the spacing compressor arm sliding sleeve of 10-, 11-Anti-drop device, the spacing nut that is fixed of 12-, the spacing compression operating grip of 13-, the spacing compression wing plate of 14-, the spacing pressure of 15-Tight pin, 16-side mould limiting otic placode, the spacing compression sliding hanger rod of 17-, 18-mould bases hanger, 19-mould bases longeron, 20-mould bases horizontal strokeBeam, 21-knockout pin abutment sleeve, 22-template tightens nut, clamp nut under 23-template, 24-template suspension rod, 25-electricityCable groove cover plate template, 26-the first cable trough side form, 27-anti-overflowing steel plate strip, 28-the second cable trough side form, 29-the first waterDitch side form, 30-the second ditch side form, 31-ditch lid template die plate, 32-side form boatswain chair, 33-side form, 34-side form is fixed otic placode,The longitudinal connecting bolt of 35-template hole, 36-expansion bolt, the spacing compressor arm fixing hole of 37-, 38-the first cable trough side form suspension rodHole and slideway, 39-the second cable trough side form boom hole and slideway, 40-the first ditch side form boom hole and slideway, 41-the second waterDitch side form boom hole and slideway, 42-ditch lid template die plate boom hole and slideway, 43-car body, the vehicle-mounted counterweight of 44-, 45-craneColumn, 46-floor, 47-the first cross-brace, 48-the 3rd cross-brace, 49-the second cross-brace, 50-walking beam, 51-bulkhead,52-pull bar, 53-fixed head, 54-rotating shaft, 55-connecting plate, 56-spring, 57-steady pin, 58-electric hoist, 59-chain sling,60-generator, 61-guard rail, 62-yielding rubber plate, 63-chain sling hook, 64-road wheel.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the invention is described in further detail.
As shown in Fig. 1-6, tunnel ditch cable trench gang form provided by the invention hangs rotatable erection unit, comprises combinationTemplate and for lifting the crane of gang form, described gang form, comprises and carries out using positioner, mould after AssemblingRack device and plate device. When mobile, adopt simple and easy loop wheel machine lifting, transport and hang in place, utilize self quick locationDevice is realized Template Location. In the present embodiment, gang form comprises the Combined formwork that some groups of Dan Zuwei 5m are long, every groupTemplate all has independently ditch cable trench, can rapid construction ability, while use separately, do not reduce the use function of this template,When many cover templates are used in conjunction with, more can increase work efficiency. Ditch cable trench combination moving die plate in the present invention, fixingThe mould bases of the cambered surface fixed block 1 on molded secondary lining concrete raises the backstay on whole backstay and knockout pin 7,Realize the quick location of overall mould bases by Template Location scale 5, between each side template and mould bases, enter by template suspension rod 24Row is connected and fixed, and in the hole of template suspension rod 24, outside semi-circular arc shape end face is respectively Template Location position and demoulding position,After Template Location, position by clamp nut, and undertaken laterally, longitudinally by Template Location scale 5, spacing compressor armTemplate Location, prevents that off normal or floating from appearring in template in concreting process. Removable after the about 4h of concrete curingTemplate Location scale 5, unclamp spacing compressor arm; When the demoulding, unclamp tapping template suspension rod 24 backspin location after clamp nutBar and knockout pin 7 demouldings realize fast demoulding. Because the mode of turning of hanging adopting is overlapped moving die plate device without the knot of traveling independentlyStructure, on design height and width, template all reduces to some extent more in the past, therefore can meet construction period conveying track currentActual needs. In the present invention, hang rotatable ditch cable trench gang form, comprise at least two above moulds that longitudinally arrangeFrame longeron 19, described mould bases longeron 19 and the cable trough cover boards template 25, the first cable trough that laterally be arranged in parallel in orderSide form 26, the second cable trough side form 28, the first ditch side form 29, the second ditch side form 30, ditch lid template die plate 31 andThe side form 33 that is arranged on outside is fixedly connected with, and described cable trough cover boards template 25 is adjacent with the first cable trough side form 26 fixingConnect described the second ditch side form 30 and ditch lid template die plate 31 adjacent being fixedly connected with, each described mould bases longeron 19End is connected with extensible canopy 3 one end that are provided with position fixing handle 4, and the other end of described extensible canopy 3 is connected with and is provided with cambered surface and fixesPiece 1, described cambered surface fixed block 1 is provided with extensible canopy fixed handle 2, on described mould bases longeron 19 respectively at the first cable troughBetween side form 26 and the second cable trough side form 28 and between the first ditch side form 29 and the second ditch side form 30, be provided with mould bases horizontal strokeBeam 20, described the first cable trough side form 26 is provided with the first cable trough side form boom hole and slideway 38, described mould bases longeron 19Be provided with the second cable trough side form boom hole and slideway 39, the first ditch side form boom hole and slideway 40, the second ditch side formBoom hole and slideway 41 and knockout pin abutment sleeve 21, described ditch lid template die plate 31 is provided with ditch lid template die plate boom holeAnd slideway 42, described mould bases crossbeam 20 is provided with several spacing compressor arm fixing holes 37, described mould bases longeron 19 and mouldFrame crossbeam 20 is vertical setting mutually, several mould bases hangers 18 on described mould bases crossbeam 20, adjacent described mould bases hangerBetween 18, distance equates, is provided with backstay and knockout pin 7, described mould bases longeron 19 in described knockout pin abutment sleeve 21In the spacing compressor arm sliding sleeve 10 of upper setting, be set with spacing compression sliding hanger rod 17, described spacing compression sliding hanger rod17 are provided with spacing compression wing plate 14, and described spacing compression wing plate 14 is by spacing compression pin 15 and the first cable trough side form26 are connected with the side mould limiting otic placode 16 on the second cable trough side form 28, described the first cable trough side form 26 and the second cableTemplate suspension rod 24 on groove side form 28 tightens fastening screw under nut 22 and template through mould bases longeron 19 by template respectivelyFemale 23 are fixedly connected with, and the top of described spacing compressor arm sliding sleeve 10 is provided with for adjusting spacing compression operating grip 13The spacing nut 12 that is fixed of position, the end of described spacing compression sliding hanger rod 17 is provided with anti-drop device 11, described mouldPlate suspension rod 24 is provided with the Template Location scale 5 connecting by Template Location pin 6. Described side form 33 and mould bases crossbeam 20End be provided with side form chute 8, described side form chute 8 is connected with mould bases longeron 19 by side form set bolt 9. DescribedSide form 33 is provided with side form boatswain chair 32 and the fixing otic placode 34 of side form, and the fixing otic placode 34 of described side form is by expansion bolt 36Be connected with construction abutment wall basis. The junction of described the first cable trough side form 26 and the second cable trough side form 28 is provided with anti-overflowingSteel plate strip 27, described the first cable trough side form 26, the second cable trough side form 28, the first ditch side form 29, the second ditch sideMould 30, ditch lid template die plate 31 and the side form 33 that is arranged on outside are provided with several regularly arranged templates and are longitudinally connectedBolt hole 35 connects. Crane in the present invention, as shown in Figs. 7-9, described crane comprises the car being arranged on car body 43Carry counterweight 44, two and overlap the crane column 45 and the generator 60 that be arranged in parallel, be provided with road wheel 64 below described car body 43,Described crane column 45 centre positions are provided with walking beam 50, and described walking beam 50 is provided with by electric wire 59 and generator 60Connect and do along walking beam 50 directions the electric hoist 58 of back and forth movement, described electric hoist 58 is provided with chain sling hook 63, described inWalking beam 50 is provided with the link downside of crane column 45 spring 56 being connected by steady pin 57, described walking beam 50End be provided with bulkhead 51, the top of described crane column 45 is provided with fixed head 53, described fixed head 53 and connecting plate55 connect, and described connecting plate 55 is provided with rotating shaft 54, and described rotating shaft 54 is connected with one end of pull bar 52, described pull bar52 the other end is fixed on walking beam 50, and described crane column 45 is provided with the first cross-brace with the opposing direction of walking beam 5047, the centre position of described the first cross-brace 47 is connected with second cross-brace 49 one end, described the second cross-brace 49 anotherOne end is packed on car body 43 through vehicle-mounted counterweight 44, and the side of described crane column 45 is provided with the 3rd cross-brace 48, instituteState the 3rd cross-brace 48 and be fixedly connected with floor 46, the bottom of described generator 60 and vehicle-mounted counterweight 44 junctions are provided with and subtractShake rubber slab 62, described generator 60 is gasoline engine generator, and the power of described gasoline engine generator is 8kw, and described crane is verticalPost 45 is provided with several floors 46, and the interval between adjacent described floor 46 is equal, and described generator 60 is provided with anti-Guardrail 61, described guard rail 61 is wire mesh cage structures.
As shown in figure 10, the present invention also provides a kind of use tunnel ditch cable trench gang form to hang rotatable erection unitConstruction method, comprise the following steps:
Step 1, to the abutment wall basis basal plane cleaning in tunnel, after the driving tunnel moulding of Tunnel Engineering, carries out the initial stage successivelySupporting, inverted arch prefabricated section are mated formation, inverted arch prefabricated section bottom pea gravel concreten is filled, inverted arch prefabricated section dual-side foundation of wall coagulationThe construction of earthen backfill, abutment wall base concrete, elevation is to designing absolute altitude at the bottom of ditch, the Second Lining Construction ditch cable trench in tunnelConstruction is taking the abutment wall basis that performed and secondary lining concrete surface as basic,
Step 2, as shown in figure 11, measures in unwrapping wire step, on the lining cutting side wall of having constructed, carries out the first unwrapping wireWith the second unwrapping wire, the 3rd unwrapping wire and the 4th unwrapping wire on abutment wall basis, wherein, the graticule of the first unwrapping wire is for locating template arcFace fixed block 1; The graticule of the second unwrapping wire is for the high process control of ditch cable trench top of concrete; The graticule of third party's line is used forThe control of template longitudinal register; The graticule of the 4th unwrapping wire is located for the expansion bolt 36 of side mould, the graticule of the first unwrapping wire andThe graticule of the 3rd unwrapping wire is for control, the graticule of the second unwrapping wire and the 4th unwrapping wire of ditch cable trench elevation, coordinate and straight degreeGraticule be used for the control of concrete formation quality of assistance;
Step 3. is carried out reinforcement fabrication and installation;
Step 4, carries out earthing or grounding means and drainpipe and installs;
Step 5, to carrying out template assembling outward at Tunnel, by the template installation in position assembling with carry out coarse adjustment, template groupPart carries out Assembling outside the hole, and the parts that need Site Welding will be Template Location pin 6, side mould limiting otic placode 16, spacing compressionSliding hanger rod 17 positions welding according to position location, after formwork integral has been assembled, prepares to lift into hole to use; MouldPlate coarse adjustment moves forward and backward template and the smooth-going overlap joint of ditch cable trench of constructing after comprising that formwork integral lifting puts in place, moves left and rightTemplate all drops on the graticule of the 3rd unwrapping wire 3 position bars of every group of template and knockout pin 7; Extract extensible canopy 3 out and make its terminationFixture embeds in cambered surface fixed block 1 preformed groove and closed extensible canopy fixed handle 2; Horizon rule is placed on to mould bases end face,Rotation adjusted position bar and knockout pin 7 decline until the bubble of horizon rule is all placed in the middle after making mould bases increase, and screw extensible canopy location handHandle 4, realizes formwork integral coarse adjustment;
Step 6, to carrying out accurate adjustment and cleaning through the template of coarse adjustment, template fine adjusting comprises the first cable trough side form 26, theTwo cable trough side forms 28, the first ditch side form 29, the second ditch side form 30 the template suspension rod of totally 4 positions, place all slide intoThe outside of this place's pattern hole, realizes template closure, and Template Location scale 5 two ends preformed holes are inserted and lay respectively at the first cableIn groove side form 26, the second ditch side form 30 templates-Template Location pin 6 in, make formation of concrete headroom meet ditch lidPlate, cable trough cover boards are to ditch cable trench headroom; Clamp nut 23 positions under clamp nut 22 on adjusting template, template,Adjust after template height puts in place, carry out fastening, descend respectively adjustment mould plate the first cable trough side form 26, the second cable trough side form 28,The spacing compressor arm sliding sleeve 10 that the first ditch side form 29, the second ditch side form are 30, buckles into spacing compression pin 15In side mould limiting otic placode 16 preformed grooves, the fastening spacing nut 12 that is fixed, prevent the first cable trough side form 26 in template,The second cable trough side form 28, the first ditch side form 29, the second ditch side form 30 in concreting process, occur floating orSkew; Behind the second ditch side form 30 location, regulate ditch lid template die plate 31 positions to make it closely connected with the second ditch side form 30The rear fastening spacing nut 12 that is fixed, slides onto side form 33 to the inside template bottom and waters and build up along side form chute 8After the abutment wall basis of type is closely connected, fastening side form set bolt 9, and expansion bolt 36 is carried out through the fixing otic placode 34 of side formSide form is fixed;
Step 7, the template of carrying out between group and group after template fine adjusting completes is longitudinally connected, after moulding groove smooth-going, to warpCross the template brushing releasing agent of accurate adjustment;
Step 8, concreting, assembles more than 5 groups in template, carries out concreting work, and concrete transportation is to executingBehind work scene, be directly conveyed in template by shuttle groove;
Step 9, carries out maintenance to the concrete of building, to concrete curing 4h;
Step 10, the concrete after maintenance carries out the demoulding, takes off Template Location scale 5, unclamp template tighten nut 22,Under template, clamp nut 23 and the spacing nut 12 that is fixed, mention the spacing dress of template by spacing compression operating grip 13Put, spacing compression pin 15 is departed to the preformed groove of side mould limiting otic placode 16; Unclamp side form 32 side form set bolt 9,The expansion bolt 36 of the fixing otic placode of side form 34 positions, sleiding form moves laterally, side form and formation of concrete emaciated face from;Tapping template suspension rod 24 makes template the first cable trough side form 26, the second cable trough side form 28, the first ditch side form 29,Two ditch side forms 30 and ditch lid template die plate 31 the template suspension rod 24 of totally 5 positions, place all slide into this place's pattern hole inSide, template side and formation of concrete emaciated face from, backspin-backstay and knockout pin 7 drive overall mould bases to rise, and make templateBottom surface and formation of concrete emaciated face from; Each side template and formation of concrete emaciated face, from rear, are unclamped extensible canopy fixed handle 2, receiveReturn extensible canopy 3, adopt the gantry crane that drawn by diesel locomotive that this group formwork integral is hung and goes to the next position and recycle;
Step 11, concrete carries out, after follow-up maintenance, hanging while turning, crane formwork integral is sling after the electronic calabash of travelingReed 58 is closely connected to template and crane, template and crane column 45 is connected and fixed with chain lock, and electric block adopts 18kW gasoline engine generator provides power.
The present invention is not limited to above-mentioned embodiment, in the situation that not deviating from flesh and blood of the present invention, and art technology peopleAny distortion, improvement, replacement that member can expect all fall into protection scope of the present invention.