CN103225513B - Integral pouring construction method of ventilation inclined shaft provided with mid-partition and integral trolleys - Google Patents
Integral pouring construction method of ventilation inclined shaft provided with mid-partition and integral trolleys Download PDFInfo
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- CN103225513B CN103225513B CN201310074352.7A CN201310074352A CN103225513B CN 103225513 B CN103225513 B CN 103225513B CN 201310074352 A CN201310074352 A CN 201310074352A CN 103225513 B CN103225513 B CN 103225513B
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Abstract
The invention overcomes the defect of a long construction period of a conventional construction method, and provides an integral pouring construction method of a ventilation inclined shaft provided with a mid-partition. The method comprises the steps as follows: two lining trolleys are used; an outside lower die plate and an outside top die plate of each trolley form an arc surface; an inside panel body is a flat and straight plane, and inside panels of the two trolleys form a space for pouring the mid-partition; and the two trolleys are positioned along two sides of a middle line of the inclined shaft, the trolleys are connected to form an integral trolley after positioned, and concrete is poured on side walls on two sides of the inclined shaft and the mid-partition simultaneously. The integral trolley comprises the two lining trolleys, and the two trolleys are connected into a whole through a stopper die plate. According to the method, lining and mid-partition pouring are performed simultaneously, the process is simplified, the construction period is shortened, the two trolleys can move and can be adjusted independently, and can also be combined into a whole, so that the simultaneous lining and mid-partition pouring can be realized, and disadvantages which are prone to occur in the conventional construction are avoided.
Description
Technical field
The present invention relates to a kind of method for tunnel construction, particularly, is the ventilation inclined shaft lining construction that a kind of highway tunnel is established mid-board, the construction of especially large section steep inclined shaft band mid-board lining cutting.
Background technology
At present, the highway tunnel of growing up tends to arrange underground Ventilator Room more, and the form that increases mid-board by inclined shaft realizes supply and exhaust function, in operation, have advantages of little to destruction of surface, floor space is few, ventilation effect good.But in construction, with the first construction method routinely of ventilation inclined shaft lining cutting of mid-board, carry out full section lining construction, the mid-board of then constructing separately, lining cutting and mid-board adopt two cover chassis.In order to reduce lining trolley dismounting restriction construction of central division wall progress, just generally start the mid-board of constructing after lining construction is complete.The method has working procedure complexity, and the construction period is long, and the seam crossing treatment of construction joints difficulty between mid-board and two linings is large, and the common faults such as spillage, faulting of slab ends are difficult to avoid, and the high drawback of chassis overall cost.
Summary of the invention
The object of the invention is to solve the long defect of construction period that conventional construction method exists, a kind of ventilation inclined shaft formed by integrally casting construction method with mid-board is provided.
For achieving the above object, the technical solution used in the present invention is: a kind of ventilation inclined shaft formed by integrally casting construction method with mid-board, use two lining trolleys, outside chassis, lower panel and outer top surface plate form arcwall face, inner panel main body is flat face, is formed the space of cast mid-board by two chassis inner panel; Along two chassis in location, inclined shaft center line both sides, chassis connects into an integral trolley by two chassis behind location, utilizes integral trolley to inclined shaft both sides abutment wall and mid-board while fluid concrete.
The inventive method is built lining cutting and mid-board simultaneously, and operation is simplified, and has shortened the duration.
The present invention also provides a kind of integral trolley for the above-mentioned ventilation inclined shaft formed by integrally casting construction method with mid-board, described chassis comprises two lining trolleys, two chassis are connected by stopper template, and wherein the structure of arbitrary chassis comprises door frame, rail, road wheel and panel; Door frame comprises door frame bottom girder, door frame column and door frame crossbeam, and the junction of door frame bottom girder and door frame column arranges jack, and door frame crossbeam top is provided with rack supporting structure; Road wheel is loaded on door frame bottom girder bottom, and steel rail laying is in road wheel bottom; Panel comprises outside lower panel, outer top surface plate and inner panel, and outside lower panel and outer top surface plate form arcwall face, and inner panel main body is flat face, and inner panel top is connected with outer top surface plate inner side; Between the door frame column of inner panel and inner side, leading screw is set, between the door frame column in outside lower panel and outside, leading screw is also set, outer top surface plate is supported fixing by rack supporting structure.
Chassis of the present invention combines with lining trolley with simple rack supporting structure, two chassis can independently move and debug, can be combined into again an integral trolley and can build to realize lining cutting and mid-board simultaneously, avoid the disadvantage being prone in conventional construction.
Compare with conventional construction method, the present invention has following beneficial effect:
(1) ventilation inclined shaft mid-board and lining cutting are once constructed, and have simple to operate, operation to simplify, circulation is accelerated, the duration is short, the feature of cost cutting.
(2) lining trolley good stability, safe.Construction equipment is simple, and cooperation personnel are few.
(3) mid-board and attractive in appearance with lining cutting junction concrete appearance, without spillage, faulting of slab ends and obvious constuction joint.
Method of the present invention and special-purpose lining trolley are applicable to the ventilation inclined shaft lining construction that highway tunnel is established mid-board, are particularly useful for the construction of large section steep inclined shaft band mid-board lining cutting.
Accompanying drawing explanation
Fig. 1 is the structural representation of the integral trolley that adopts of the present invention.
Fig. 2 is process chart of the present invention.
Fig. 3 is lining section schematic diagram.
Fig. 4 is hoist engine basic schematic.
In figure, 1-rail, 2-road wheel, 3-door frame bottom girder, 4-door frame column, 5-door frame crossbeam, 6-jack, lower panel outside 7-, 8-outer top surface plate, 9-inner panel, 10-leading screw, the anti-outrigger of 11-, 12-longeron, 13-column, 14-stull.
The specific embodiment
A kind of ventilation inclined shaft formed by integrally casting construction method with mid-board of the present invention, use two lining trolleys, outside chassis, lower panel and outer top surface plate form arcwall face, and inner panel main body is flat face, are formed the space of cast mid-board by two chassis inner panel; Along two chassis in location, inclined shaft center line both sides, chassis connects into an integral trolley by two chassis behind location, utilizes integral trolley to inclined shaft both sides abutment wall and mid-board while fluid concrete.
As shown in Figure 1, described integral trolley, comprises two lining trolleys, and two chassis are connected by stopper template, and wherein the structure of arbitrary chassis comprises door frame, rail 1, road wheel 2 and panel; Door frame comprises door frame bottom girder 3, door frame column 4 and door frame crossbeam 5, and door frame bottom girder 3 arranges jack 6 with the junction of door frame column 4, and door frame crossbeam 5 tops are provided with rack supporting structure; Road wheel 2 is loaded on door frame bottom girder 3 bottoms, and rail 1 is layed in road wheel 2 bottoms; Panel comprises outside lower panel 7, outer top surface plate 8 and inner panel 9, and outside lower panel 7 and outer top surface plate 8 form arcwall face, and inner panel 9 main bodys are flat face, and inner panel 9 tops are connected with outer top surface plate 8 inner sides; Between the door frame column 4 of inner panel 9 and inner side, leading screw 10 is set, between the door frame column 4 in outside lower panel 7 and outside, leading screw 10 is also set, outer top surface plate 8 is supported fixing by rack supporting structure.
Described rack supporting structure comprises anti-outrigger 11, longeron 12, column 13 and stull 14; Anti-outrigger 11 is fixed on door frame crossbeam 5 tops, and two ends are fixedly connected with outer top surface plate 8 with inner panel 9 respectively; Longeron 12 is fixed on anti-outrigger 11 tops, and column 13 bottoms are fixed on longeron 12, and stull 14 is fixedly connected between two adjacent upright 13.
Below in conjunction with instantiation, the method for the invention is illustrated.
One, construction technology process and key points for operation
As shown in Figure 2, key points for operation comprise following content to construction technology process:
1. preparation of construction
General ventilation inclined shaft is all that place, hole is high, and low with Zheng Dong intersection, to meet air draft requirement.For this reason, during two chassis constructions, need first complete excavation and inverted arch, then by carrying out lining cutting outside Nei Xiang hole, hole.Lining section is shown in Fig. 3.
Adopt two 50t hoist engines, 15 traction chassis, hoist engine hauling distance is not more than 300m, and hoist engine pedestal need arrange long Ф 25 reinforced anchor bolts 16 of 2m, spacing 25cm simultaneously.Base thickness 1m, adopts disjunctor basis, and pre-buried Ф 28 anchor bars 17 and reinforced mesh 18, and anchor bar 17 is connected with anchor pole 16, to guarantee the stable and safety of hoist engine.Fig. 4 is hoist engine basic schematic.Before construction, the pulling equipments such as hoist engine, wire rope are checked.
2. bottom construction mid-board (optional step)
When mid-board bottom design is fillet because bottom while building concrete pressurized larger, and that circular formwork location reinforces difficulty is larger, and mould phenomenon easily occurs to run.Select first to build bottom curvature portion mid-board (1m is high), to facilitate chassis to reinforce and raising concrete presentation quality.
When mid-board bottom design is stalk, can primary concreting mid-board and lining concrete, and without first carrying out the construction of mid-board bottom.
3. chassis is located
Chassis when location, will send, drain tunnel left and right two parts are along the setting-out of inclined shaft center line symmetry, two chassis are located simultaneously, construction lofting method is identical with conventional lining setting-out, integral installation stopper template behind location, makes it to form an integral body, becomes a chassis (as shown in Figure 1).
4. filling concrete
During filling concrete, should be noted that both sides abutment wall and mid-board pour into simultaneously, to guarantee not bias voltage of chassis.Abutment wall and the mid-board concrete perfusion discrepancy in elevation≤1m.
Two, material and equipment
Without the material of special instruction, the main plant of employing is in Table 1.
The main plant table of table 1
| Sequence number | Title | Specifications and models | Power | Unit | Quantity | Purposes |
| 1 | Lining trolley | 9m | ? | Platform | 2 | ? |
| 2 | Track | ? | ? | m | 150m | ? |
| 3 | Delivery pump | HBT60 | 110KW | Platform | 1 | Concrete pumping |
| 4 | Concrete tank | 10m 3 | ? | Platform | 2 | Outside hole, transport concrete |
| 5 | Hoist engine | 50t | 280KW | Platform | 1 | Traction rail formula tank car and delivery pump |
| 6 | Tape measure | 5000mm | ? | ? | 1 | Measure mid-board thickness |
| 7 | Attached vibrator | ? | 1.5KW | Platform | 8 | Concrete tamping |
| 8 | Electric drill | 22mm | ? | ? | 1 | Be used for applying anchor bar hole |
| 9 | Electric welding machine | BX400 | ? | Platform | 1 | Welded reinforcement |
| 10 | Reinforcement cutting shears | GJ40 | 3KW | Platform | 1 | Reinforcing bar processing |
| 11 | Angle-bender | GW40 | 3KW | Platform | 1 | Reinforcing bar processing |
Three, quality control
1. before construction, measure setting-out, determine respectively the center line of Liang Ge cavern, mid-board left and right.
2. lining trolley localization examination is answered emphasis inspection list chassis width, height and integral trolley beam overall, highly.To guarantee that lining cutting profile meets design requirement.
3. strict control is constructed match ratio and concrete-agitating time.While building, according to window layering, alternately build, control concrete discharging height, mid-board and side wall concrete are built the discrepancy in elevation and are controlled in 1m, to prevent chassis bias voltage.
The construction match ratio of strictly signing and issuing by test room stirs construction, forbids, at the additional unboiled water of pump truck, to carry out in time slump detection and adjustment, guarantees concrete workability.Secondly, strengthen vibrating, window internal vibration rod vibrate less than position, can the bubble that be attached to template surface be discharged by the method for the template of suitably vibrating, reduce the appearance of honeycomb.
4. before chassis is in place, concrete and chassis overlapping part surface are thoroughly cleaned out, chassis and concrete surface are close to as far as possible, before concreting, by whole fastening the putting in place of all support leading screws, guarantee that chassis integral body is stressed.In concreting process, the fastening degree of running check leading screw, finds that there is lax leading screw fastening in time, keeps the resistance to overturning of chassis panel.Check chassis front and back cross dimensions, eliminate in time foozle, midline position requires accurately to set, and chassis center line and tunnel center line are consistent as far as possible.In concreting process, slow down the filling concrete speed in the high 3m of pallet bottom and control slump in 16cm.
5. in construction, guarantee concrete supply speed, two chassis continuous pourings, the cold seam of avoiding constructing.
6. as the bent limit of construction parapet, between bent limit parapet and lining trolley, with 5mm rubber strip, be affixed on chassis external mold and avoiding spillage phenomenon to occur.
Four, safety measure
1. lining trolley, operation platform must have specialized designs, and processing and fabricating must meet designing requirement, guarantee the safety and stability of stand, and the height of guard rail should be greater than 1.2m.Springboard, base plate, ladder should be installed firmly and carry out anti-skidding processing.
2. stand no over-loading stacked items, forbids to huddle on workbench, on springboard and on scaffold and leaves about, and the posted loading of should listing on stand, prevents the stacked items that overloads, and prevents from that article from falling to hurt sb.'s feelings.
3. all open flame source must keep enough safe distance with splash guard, in order to avoid the splash guard that ignites.The necessary isolating and protecting plate supply line of reinforcing bar welding equipment must keep certain distance with splash guard.
4. must there be sleeve pipe measure in all supply lines by lining trolley, and the consumer plug-in strips such as electric welding machine, vibrator, delivery pump, circuit, earth leakage protective device, ground connection are good, electric wire without damaged, without electric leakage.
5. the use of acetylene, oxygen, put distance and protection to meet national pertinent regulations, prevent exploding.
Concrete transfer pump with before should connect pipeline, pipeline is checked and pressure testing.
7. transport the vehicle of material and forbid people to expect to load in mixture, forbid super wide, overload, superelevation, hypervelocity, defective material will bundle firmly.
8. when lining concrete pours into, must support by designing requirement, it is symmetrical that both sides rate of flooding and concrete surface lifting height are wanted, and checks at any time the stable of support during perfusion, prevents the burst-mode that lining trolley bias voltage causes.
Five, environmental practice
1. the waste oil waste water of construction machinery, the processing of adopting an effective measure, discharge beyond standards, does not cause river and pollution of waterhead.
2. the water or the construction waste water that rinse aggregate just allow to enter river course after filtration, precipitation or other method are processed.
Six, beneficial effect analysis
The inventive method and conventional construction method comparison, benefit is mainly manifested in following three aspects:,
1. duration benefit
In conventional construction method, more than two chassis need interval 100m, as adopted hoist engine traction mid-board chassis, spacing distance also will increase, and will constantly keep this distance, to reduce construction, disturbs, the construction of mid-board chassis can not reach Ideal Cycle, need 3 months progresses of hysteresis lining cutting.
The inventive method mid-board and lining cutting are constructed simultaneously, reduced engineering time and the construction of mid-board in conventional construction and disturb the claim for eot bringing on the duration.And can realize a plate lining cutting in average 1.5～1.7 days, basic identical with the conventional construction lining cutting time, monthly 150m～180m has been amounted in two lining cutting.
2. economic benefit
Chassis expense only, the lining cutting of conventional construction method and mid-board adopt two cover chassis, and expense is about 350,000 left and right, and under equal conditions, adopting the inventive method chassis design length is 9m.Door frame bottom girder and door frame column all adopt 12mm steel plate to be welded, and rack supporting structure adopts I 16 i iron, and panel adopts 10mm steel plate.Jack-up system adopts 8 50t jackscrew, 21 horizontal leading screw jack.Trolley running adopts two hoist engine tractions.Two chassis gross weight 49.1t, 25.53 ten thousand yuan of total costs.
Conventional construction method needs two complete work teams, wherein lining trolley 8 people and mid-board chassis 6 people, concreting 8 people.Lining trolley and mid-board chassis all need to be equipped with loader or excavator simultaneously, in order to promote chassis.Need two delivery pumps to carry out concreting.Adopt the present invention's construction only to need a complete work team, that is: chassis is located 4 people, is reinforced 4 people, concreting 5 people, compared with conventional construction personnel, reduces by 9 people.
Duration shortens, and labour reduces, and the reduction of loss is especially for enterprise creates good economic benefit.
3. social benefit
Be mainly manifested on concrete appearance, conventional second pouring, mid-board and two linings are inevitable at the constuction joint of arch crown part, easily there is all kinds of spillages, faulting of slab ends, concrete is not full and the mass defect such as obvious constuction joint, the concrete that adopts this engineering method construction is at vault place without construction gap, and appearance is bright and clean attractive in appearance.
Seven, application example (should cling to speedway crossdrift a strip of land between hills tunnel 1# inclined shaft)
1. project profile
The long 1223.73m of crossdrift a strip of land between hills tunnel 1# inclined shaft, the gradient 11.52%, radius 5.1m, lining thickness 40cm, mid-board thickness 30cm, every linear meter(lin.m.) concrete quantity is 11.86m
3, crossdrift a strip of land between hills tunnel 1# inclined shaft lining section.
2. condition of construction
Adopt two chassis mid-board one cast engineering methods, be equipped with chassis and locate 4 people, reinforce 4 people, concreting 5 people, be equipped with one of delivery pump simultaneously.Agitator and concrete tank and positive hole share, and complete all lining projects, while sharing 9 months.
3. evaluation of result
In crossdrift a strip of land between hills tunnel 1# inclined shaft mid-board and lining construction, by adopting two chassis one cast engineering methods, good economic benefit and social benefit have been obtained, this engineering method is not only applicable to mid-board and the lining construction of symmetrical section, be equally applicable to have the mid-board of asymmetric section and the construction of lining cutting, application prospect is very extensive.
Claims (4)
1. the ventilation inclined shaft formed by integrally casting construction method with mid-board, it is characterized in that: use two lining trolleys, outside chassis, lower panel and outer top surface plate form arcwall face, and inner panel main body is flat face, are formed the space of cast mid-board by two chassis inner panel; Along two chassis in location, inclined shaft center line both sides, chassis connects into an integral trolley by two chassis behind location, utilizes integral trolley to inclined shaft both sides abutment wall and mid-board while fluid concrete.
2. method according to claim 1, is characterized in that: while pouring into a mould simultaneously, and the discrepancy in elevation≤1m of both sides abutment wall and mid-board fluid concrete.
3. for the integral trolley of method described in claim 1, it is characterized in that: comprise two lining trolleys, two chassis are connected by stopper template, wherein the structure of arbitrary chassis comprises door frame, rail (1), road wheel (2) and panel; Door frame comprises door frame bottom girder (3), door frame column (4) and door frame crossbeam (5), and door frame bottom girder (3) arranges jack (6) with the junction of door frame column (4), and door frame crossbeam (5) top is provided with rack supporting structure; Road wheel (2) is loaded on door frame bottom girder (3) bottom, and rail (1) is layed in road wheel (2) bottom; Panel comprises outside lower panel (7), outer top surface plate (8) and inner panel (9), outside lower panel (7) and outer top surface plate (8) form arcwall face, inner panel (9) main body is flat face, and inner panel (9) top is connected with outer top surface plate (8) inner side; Between the door frame column (4) of inner panel (9) and inner side, leading screw (10) is set, between the door frame column (4) in outside lower panel (7) and outside, leading screw (10) is also set, outer top surface plate (8) is supported fixing by rack supporting structure.
4. integral trolley according to claim 3, is characterized in that: rack supporting structure comprises anti-outrigger (11), longeron (12), column (13) and stull (14); Anti-outrigger (11) is fixed on door frame crossbeam (5) top, and two ends are fixedly connected with outer top surface plate (8) with inner panel (9) respectively; Longeron (12) is fixed on anti-outrigger (11) top, and it is upper that column (13) bottom is fixed on longeron (12), and stull (14) is fixedly connected between two adjacent upright (13).
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| CN201310074352.7A CN103225513B (en) | 2013-03-08 | 2013-03-08 | Integral pouring construction method of ventilation inclined shaft provided with mid-partition and integral trolleys |
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| CN201310074352.7A CN103225513B (en) | 2013-03-08 | 2013-03-08 | Integral pouring construction method of ventilation inclined shaft provided with mid-partition and integral trolleys |
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| CN103225513B true CN103225513B (en) | 2014-12-10 |
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| CN104033163B (en) * | 2014-05-06 | 2016-04-06 | 中铁十七局集团第二工程有限公司 | Hydraulic tunnel base plate and side wall concrete pouring one-step forming method |
| CN104948203A (en) * | 2015-04-29 | 2015-09-30 | 中铁隧道集团三处有限公司 | Integral construction method for inclined-shaft tunnel linings and asymmetric mid-wall linings |
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| CN106593474B (en) * | 2016-12-23 | 2018-09-11 | 湖南五新隧道智能装备股份有限公司 | A kind of lining trolley and its construction method for metro station construction |
| CN106593473B (en) * | 2016-12-23 | 2019-08-02 | 湖南五新隧道智能装备股份有限公司 | A kind of side and roof arch band mid-board lining cutting trolley |
| CN108316946B (en) * | 2017-01-17 | 2021-07-13 | 中国葛洲坝集团路桥工程有限公司 | Open type TBM synchronous lining method and device |
| CN107313786B (en) * | 2017-06-30 | 2019-03-08 | 云南公投建设集团隧道工程有限公司 | Trolley trailer system |
| CN107882580B (en) * | 2017-12-28 | 2023-11-03 | 中铁工程装备集团有限公司 | Inserted vibration device for tunnel template trolley |
| CN108533274B (en) * | 2018-04-28 | 2024-01-23 | 四川公路桥梁建设集团有限公司 | Intelligent protection excavation trolley |
| 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 |
| CN110541724A (en) * | 2019-09-05 | 2019-12-06 | 中交第二公路工程局有限公司 | Separated ventilation inclined shaft structure of extra-long tunnel and construction method thereof |
| CN116971800B (en) * | 2023-09-21 | 2023-12-01 | 北京城建轨道交通建设工程有限公司 | Movable template trolley system for construction of partition wall in variable-section tunnel and conversion construction method |
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