All-Round Disposable Lining Are Seperated Lead Beam Rack And Job Practice
(1) technical field
The present invention relates to a kind of formwork jumbo and job practices that is used for trimmed tunnel, culvert.
(2) background technology
The extensive use needle beam formula or the formula formwork jumbo of walking carry out tunnel or tunnel lining construction both at home and abroad at present, though construction technology and automaticity thereof are higher, but the engineering of suitable construction mostly is diameter 6m and above section thereof greatly, and cross section diameter is remained the defective difficult in the template cleaning, that the operating space is little, dismounting speed is slow, cost is high less than the engineering below the 6m.
(3) summary of the invention
The purpose of this invention is to provide a kind of All-Round Disposable Lining Are Seperated Lead Beam Rack And Job Practice, mainly solve the technical problem that engineering lining construction formwork jumbo cleaning difficult, operating space little, dismounting slow, cost high of cross section diameter at 6m~3m.
The object of the present invention is achieved like this: this full circle once lining segregation type nose girder module bench, comprise template, stand, nose girder, supporting mechanism and running gear, template comprises that bolt becomes columnar soffit formwork, bottom side template, side template and top template, is characterized in that:
Annular lining beam is connected in the template inboard, is supported with backform supporting wire dish, side form support leading screw and bed die between annular lining beam and the stand and supports leading screw; Stand is supported on the stand traveling steel rail above the template of bottom side by walking mechanism;
One cover stand alternately cooperates with two cover soffit formworks, fixedly connected nose girder traveling steel rail above the soffit formwork, support has detachable load-bearing nose girder on the nose girder traveling steel rail, road wheel is arranged at detachable load-bearing nose girder bottom, the top is removably connected by adjustable seats and stand bottom, on support concrete structure, wherein an end is connected with trailer system by nose girder termination seat supports in detachable load-bearing nose girder end; Another set of soffit formwork is placed in next concrete casting station.
On detachable load-bearing nose girder, respectively support the perpendicular support of two anti-floatings before and after the above-mentioned stand.
Above-mentioned stand vertically is one to three joint frame construction, and frame construction comprises the perpendicular support of stand crossbeam, stand, stand longeron and the stand diagonal brace that is connected as one by bolt.
Be connected with bolt by being connected steel plate between above-mentioned detachable load-bearing nose girder, nose girder traveling steel rail and the soffit formwork.
Above-mentioned detachable load-bearing nose girder is formed by fixedly connecting by four horizontal i iron, four blocks of vertical steel plates, two blocks of horizontal steel plates.
The job practices of above-mentioned full circle once lining segregation type nose girder module bench is characterized in that construction sequence is:
Construction sequence 1: soffit formwork assembly unit location, the nose girder traveling steel rail is laid in place;
Construction sequence 2: assemble detachable load-bearing nose girder, nose girder is in place along the nose girder traveling steel rail, the nose girder road wheel is supported on the nose girder traveling steel rail, the end, is coupled together by steel plate and bolt between detachable load-bearing nose girder, nose girder traveling steel rail and soffit formwork on support concrete structure by nose girder termination seat supports; The nose girder traction drive system is installed;
Construction sequence 3: bottom side template installing and locating, on the bearing of two bottom side templates, lay the stand traveling steel rail then;
Construction sequence 4: lifting stand, annular lining beam, side template, top template are to the nose girder top; The steel form assembly unit is from a side toward the assembly unit of opposite side block-by-block in proper order;
Construction sequence 5: stretch backform and support leading screw, with top template and annular lining beam location, annular lining beam and template adopt the bolt steel disc to socket;
Construction sequence 6: stretch side form supporting wire thick stick, with side template and annular lining beam location, annular lining beam and template adopt the bolt steel disc to socket;
Construction sequence 7: stand relies on the positioning support at nose girder two ends accurately to locate, on detachable load-bearing nose girder, respectively support the perpendicular support of two anti-floatings before and after the stand, mounting template location leading screw is supported on just and props up on the structure on the template back of the body rib at template stand two ends, does bulkhead, placing of concrete;
Construction sequence 8: lay next group soffit formwork, soffit formwork supports leading screw by bed die and is supported on the support concrete structure.The absolute altitude and the center line of soffit formwork are adjusted, on soffit formwork, laid nose girder walking rail then;
Construction sequence 9: after treating that the concrete that waters in the step 7 reaches certain intensity, crossbeam, the soffit formwork 1 of detachable load-bearing nose girder and stand are broken away from, remove nose girder termination bearing, detachable load-bearing nose girder is moved on the nose girder walking rail, after nose girder moves to the relevant position, end bearing before the nose girder is installed and fixed, and nose girder is accurately located, then steel plate between nose girder and the soffit formwork is added additional steel plate and be connected;
Construction sequence 10: repeating step 3, lay the bottom side template of bed die both sides, support and locate, adjust the template level, on template, lay the stand traveling steel rail then;
Construction sequence 11: opposite with step 5, after having watered concrete in the step 7 and satisfying the form removal requirement, shrink both sides comb pattern, and remove side template, and side template and annular are served as a contrast beam be connected; Do not remove near next group constuction joint one ring template, be convenient to next group template overlap joint and location;
Construction sequence 12: opposite with step 4, shrink backform supporting wire dish, remove top template, and the connecting bolt between stand three joints is unclamped, make between stand joint and the joint to be separated from, prepare merogenesis and move stand;
Construction sequence 13: with the stand merogenesis and articulate template and move to the relevant position together and fix, after moving into place, stand is connected firmly again;
Construction sequence 14: repeating step 5, stand bottom surface and nose girder top are connected and fixed with adjustable seats, stretch backform and support leading screw, make top template in place;
Construction sequence 15: repeating step 6, stretch two side form supporting wire thick sticks, make side template in place; Assembled formwork stand termination one ring side template and top template;
Construction sequence 16: repeating step 7, two side templates are installed, the template stand is accurately located, the perpendicular support of termination bulkhead, horizontal location bearing and anti-floating is installed; Above-mentioned steps 8 to 16 construction that circulates successively.
The present invention compares the beneficial effect that has with existing conventional art: the structure of stand and nose girder and the arrangement of mutual alignment help lowering stand weight and steel consumption, overcome the needle beam formula and walked the shortcoming that formula formwork jumbo weight is big, cost is high, speed of application is slow, and solved template cleaning difficulty, and the operating space is little, and dismounting waits problem slowly, has convenient construction, save cost, simple in structure, it is lighter to conduct oneself with dignity, cost is lower, the advantage of flexible operation.The present invention can continous pouring, and nose girder is shorter, and traveling is very fast, reduces the engineering input, than adopting the construction of needle beam formula formwork jumbo to save cost 60%.
The present invention is according to the job practices of " mobile formwork, cast-in-place, the wholecircle section of order, once lining ", adopt full circle once lining separate type nose girder stand to substitute the needle beam formula and walk the formula formwork jumbo, concrete smooth surface on the other hand, there is not vertical constuction joint, improve construction quality and speed of application, can guarantee the safety and the quality of structure.
The present invention is made up of template, annular lining beam, stand, nose girder, running mechanism, and template, annular lining beam, stand, nose girder can break away from mutually, and a cover stand is joined two cover soffit formworks, and bed die strip traveling steel rail.Because the present invention has two cover soffit formworks and two cover walking mechanisms, has saved the set-up time, alternately lining construction speed was accelerated in installation greatly, than the fast 8-9 of conventional construction method hour.Be specially adapted to the engineering lining construction of cross section diameter 6m~3m, have that template cleaning is convenient, the operating space is spacious and comfortable, a dismounting speed advantage efficiently.
(4) description of drawings
Fig. 1 is the structural representation in template stand of the present invention cross section.
Fig. 2 is the structural representation in template stand of the present invention vertical section.
Fig. 3 is the schematic diagram of construction sequence 1 of the present invention;
Fig. 4 is the schematic diagram of construction sequence 2 of the present invention;
Fig. 5 is the schematic diagram of construction sequence 3 of the present invention;
Fig. 6 is the schematic diagram of construction sequence 4 of the present invention;
Fig. 7 is the schematic diagram of construction sequence 5 of the present invention;
Fig. 8 is the schematic diagram of construction sequence 6 of the present invention;
Fig. 9 is the schematic diagram of construction sequence 7 of the present invention;
Figure 10 is the schematic diagram of construction sequence 8 of the present invention;
Figure 11 is the schematic diagram of construction sequence 9 of the present invention;
Figure 12 is the schematic diagram that construction sequence 14 first segment stands of the present invention move;
Figure 13 is the schematic diagram that construction sequence 14 second joint stands of the present invention move;
Figure 14 is the schematic diagram that construction sequence 14 the 3rd joint stand of the present invention moves.
Figure 15 is a construction flow chart of the present invention.
Among the figure: the 1-soffit formwork, 2-bottom side template, the 3-side template, the 4-top template, the 5-stand, 6-stand road wheel, 7-stand traveling steel rail, 8-nose girder traveling steel rail, the detachable load-bearing nose girder of 9-, the 10-adjustable seats, 11-nose girder termination bearing, the 12-support concrete structure, the 13-pulley, the another set of soffit formwork of 14-, the perpendicular support of 15-anti-floating, the 16-side form supports leading screw, 17-backform supporting wire dish, 18-bed die supporting wire is shouldered, 19-stand crossbeam, the perpendicular support of 20-stand, 21-stand longeron, 22-stand diagonal brace, 23-nose girder road wheel, 24-annular lining beam, 25-connects steel plate, the 26-positioning support, 27-Template Location leading screw.
(5) specific embodiment
Referring to Fig. 1, Fig. 2, this full circle once lining segregation type nose girder module bench comprises template, stand and supporting mechanism between the two.Annular lining beam 24 is connected in the template inboard, is supported with backform supporting wire dish 17, side form support leading screw 16 and bed die between annular lining beam 24 and the stand 5 and supports leading screw 18.
Its template comprises that bolt becomes columnar soffit formwork 1, bottom side template 2, side template 3 and top template 4, and template size is given an example: the template diameter is 4.01m; 1429 * 864mm, the 864mm limit is an arc tips; Plate thickness is the 4mm steel plate, and back of the body floor is the 4mm steel plate, and back of the body gilled rings is 216mm to spacing, and back of the body rib longitudinal pitch is 286mm.Soffit formwork adopts: 1429 * 1372mm, the 1372mm limit is an arc tips.The exhaust hole of soffit formwork processing diameter 5mm, blossom type arranges that spacing is 1m.
Walking of the present invention is divided into stand walking and nose girder walking two parts.Stand 5 is supported on the stand traveling steel rail 7 above the template of bottom side by walking mechanism 6, and side template 3 supports leading screw 16 by side form and is connected with stand 5, soffit formwork 1 by nose girder and bed die by being connected steel plate 25 connections.
One cover stand 5 alternately cooperates with two cover soffit formworks 1 and 14, fixedly connected nose girder traveling steel rail 8 above the soffit formwork 1, support has detachable load-bearing nose girder 9 on the nose girder traveling steel rail, nose girder road wheel 23 is arranged at detachable load-bearing nose girder bottom, the top is removably connected by adjustable seats 10 and stand bottom, detachable load-bearing nose girder end is supported on the support concrete structure 12 by nose girder termination bearing 11, and wherein an end is connected with trailer system through pulley 13; Another set of soffit formwork 14 is placed in next concrete casting station.
For increasing the anti-floating function, respectively there is the perpendicular support 15 of two anti-floatings to be supported on the detachable load-bearing nose girder 9 before and after the above-mentioned stand.After the assembly unit of template stand was finished, the anti-floating that just can begin the mounting template stand supported and dynamical system, finishes the assembly unit of template stand.
Above-mentioned stand 5 vertically is one to three joint, and length is 12m.Stand 5 is the frame constructions that stand crossbeam 19, the perpendicular support 20 of stand, stand longeron 21, stand diagonal brace 22 linked into an integrated entity by bolt.Stand crossbeam, the perpendicular support of stand adopt i iron to make, and the stand longeron adopts i iron, and the stand diagonal brace adopts angle steel.Annular lining beam 24 adopts i iron.
Be connected with bolt by being connected steel plate 25 between above-mentioned detachable load-bearing nose girder 9, nose girder traveling steel rail 8 and the soffit formwork 1.
Detachable load-bearing nose girder 9 is formed by fixedly connecting by four horizontal i iron, four blocks of vertical steel plates, two blocks of horizontal steel plates.
Construction sequence of the present invention is referring to Fig. 3-14, and construction flow chart is seen Figure 15.
Construction sequence 1: referring to Fig. 3, soffit formwork assembly unit location, the nose girder traveling steel rail is laid in place.
Place mat 150 * 150 lumps of wood at first guarantee that soffit formwork 1 is stable, and assembly unit soffit formwork then, soffit formwork rely on bed die to support leading screw 18 to carry out Primary Location, lay nose girder traveling steel rail 8 then on soffit formwork, and nose girder walking guide rail is two square steel.
Construction sequence 2: referring to Fig. 4, assemble detachable load-bearing nose girder 9, detachable load-bearing nose girder 9 is made up of two groups of two i iron, four blocks of vertical steel plates, two blocks of horizontal steel plates, and the top connects adjustable seats 10, bottom assembling nose girder road wheel 23 and nose girder end bearing 11.Nose girder is in place along nose girder traveling steel rail 8, travelling wheel 23 is supported on the nose girder traveling steel rail 8, the end is supported on the support concrete structure 12 by nose girder termination bearing 11, couples together by being connected steel plate 25 and bolt between detachable load-bearing nose girder 9, nose girder traveling steel rail 8 and soffit formwork 1.
Construction sequence 3: referring to Fig. 5, bottom side template installing and locating is laid stand traveling steel rail 7.Two bottom side templates rely on the screw mandrel bearing to carry out Primary Location, are connected the soffit formwork both sides, and place mat 150 * 150 lumps of wood below soffit formwork guarantee the both sides form stable.
Construction sequence 4: referring to Fig. 6, lifting stand, annular lining beam, side template, top template are to the nose girder top.Behind the nose girder location, directly stand is lifted with Chain block.Organize a performance frame lifting when finishing when second, open and add two diagonal brace and the longerons of organizing a performance between the frame; The steel form assembly unit is from a side toward the assembly unit of opposite side block-by-block in proper order.
Construction sequence 5: referring to Fig. 7, stretch backform supporting wire dish 17, with top template and annular lining beam location; Annular lining beam and template adopt the bolt steel disc to socket.
Construction sequence 6: referring to Fig. 8, stretch side form supporting wire thick stick 16, with side template and annular lining beam location; Annular lining beam and template adopt the bolt steel disc to socket; Check that all bolts connect on the template stand.
Construction sequence 7: referring to Fig. 9, stand relies on the positioning support 26 at nose girder two ends accurately to locate, on detachable load-bearing nose girder 9, respectively support the perpendicular support 15 of two anti-floatings before and after the stand, mounting template is located leading screw 27 and is supported on and just props up on the structure 12 on the template back of the body rib at template stand two ends, do bulkhead, placing of concrete.
Construction sequence 8: referring to Figure 10, lay next group soffit formwork 14 at next, soffit formwork 14 supports leading screw 18 by bed die and is connected with support concrete structure 12.The absolute altitude and the center line of soffit formwork are adjusted, on soffit formwork, laid nose girder walking rail 8 then.
Construction sequence 9: referring to Figure 11, after treating that the concrete that waters in the step 7 reaches certain intensity, crossbeam, the soffit formwork 1 of detachable load-bearing nose girder 9 with stand 5 broken away from, remove nose girder termination bearing, adopt hoist engine detachable load-bearing nose girder 9 to be moved on the nose girder walking rail 8, after nose girder moves to the relevant position, end bearing before the nose girder is installed and fixed as power, and nose girder accurately located, then steel plate between nose girder and the soffit formwork is added additional steel plate and be connected.
Construction sequence 10: referring to Fig. 5, repeating step 3 is laid the bottom side template 2 of bed die both sides, supports and locatees, and adjusts the template level, lays stand traveling steel rail 7 then on template.
Construction sequence 11: opposite with reference to figure 7 with step 5, after having watered concrete in the step 7 and satisfying the form removal requirement, shrink both sides comb pattern, and remove side template, and side template and annular lining beam are articulated; Do not remove near next group constuction joint one ring template, be convenient to next group template overlap joint and location.
Construction sequence 12: opposite with reference to figure 6 with step 4, shrink backform and support leading screw, remove top template.And the connecting bolt between stand three joint unclamped, making between stand joint and the joint to be separated from, the preparation merogenesis moves stand.
Construction sequence 13: referring to Figure 12,13,14, the dependence hoist engine is a power, divides three joints with stand, moves to the relevant position respectively and fixes, and keeps stand steady in the moving process, the control translational speed.After stand three joints move into place, three joint stands are connected firmly, and the adjustment level.
Construction sequence 14: referring to Fig. 7, repeating step 5, stand bottom surface and nose girder top are connected and fixed with adjustable seats.Adopt hydraulic jack as auxiliary power, the synchronous extension backform supports leading screw 17 simultaneously, makes top template in place.
Construction sequence 15: referring to Fig. 8, repeating step 6 stretches two side form supporting wire thick sticks 16, makes side template in place; Assembled formwork stand termination one ring side template and top template.
Construction sequence 16: referring to Fig. 9, repeating step 7 is installed two side templates, and the template stand is accurately located, and the perpendicular support 15 of termination bulkhead and anti-floating is installed.
Above-mentioned steps 8 to 16 construction that circulates successively.