CN108035251B - High-speed railway bridge floor shield is without gasket prefabricated construction engineering method and device - Google Patents
High-speed railway bridge floor shield is without gasket prefabricated construction engineering method and device Download PDFInfo
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- CN108035251B CN108035251B CN201711235434.XA CN201711235434A CN108035251B CN 108035251 B CN108035251 B CN 108035251B CN 201711235434 A CN201711235434 A CN 201711235434A CN 108035251 B CN108035251 B CN 108035251B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
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- Engineering & Computer Science (AREA)
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of high-speed railway bridge floor shields without gasket prefabricated construction engineering method, it includes the following steps: step 1: the entering of reinforcing steel bar: step 2: steel reinforcement cage is made in steel bar meter: step 3: steel reinforcement cage enters mould；Step 4: installation of embedded parts；Step 5: concreting；Step 6: plastering.The present invention prepares bridge floor shield by way of making steel reinforcement cage, and manufactured shield quality is preferable, meets technique requirement, and since the globality and ease for use that are provided with built-in fitting, shield are all greatly improved.
Description
Technical field
This engineering method is suitable for the prefabricated field of all kinds of small precast parts of railway engineering, municipal works and house construction engineering, especially
It is related to high-speed railway bridge floor shield without gasket prefabricated construction engineering method and device.
Background technique
With the fast development of China express railway, the requirement to high iron formation standard is also continuously improved, especially to height
Fast railway deck system associated satellite component, for example more stringent requirements are proposed for shield manufacturing process.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of high-speed railway bridge floors for meeting technique requirement
Shield is without gasket prefabricated construction engineering method and device.
The purpose of the present invention is achieved through the following technical solutions: high-speed railway bridge floor shield is without gasket prefabricated construction
Engineering method, it includes the following steps:
Step 1: the entering of reinforcing steel bar；
Step 2: steel reinforcement cage is made in steel bar meter；
Step 3: steel reinforcement cage enters mould；
Step 4: installation of embedded parts；
Step 5: concreting；
Step 6: plastering.
It is preferred that this method or engineering method further include following steps:
Step 7: concrete plucking；
Step 8: curing in the mold；
Step 9: demoulding operating；
Step 10: spray maintenance；
Step 11: pile storage.
It is preferred that the entering of reinforcing steel bar: notifying testing crew to sample inspection after the entering of reinforcing steel bar in time, with Times supervisor
Member's witness, raw material of reinforcement rebar can use after the assay was approved；
Steel bar meter: setting-out is carried out to various specifications reinforcing bar according to design drawing, is carried out by Lofting Calculation reinforcing bar length
Blanking reinforcing bar is pressed design drawing bending forming, the reinforcing bar of bending forming is placed on the enterprising binding of welding tooling, handed over by cross by blanking
Fork binding, gas shield welding welding, forbids iron wire head to stretch in concrete；
Steel reinforcement cage enters mould: the shield steel reinforcement cage of binding forming being put into assembled mold, if used before
Mold needs to wait for reusing after release agent is dry；Steel reinforcement cage will be put down gently when being put into mold, forbid to collide mold；Embedded iron parts are fixed
It is good, exempt from cushion block tooling fixture or bracket for steel reinforcement cage from 30~39mm of mold bottom with special, it is ensured that concrete protective thickness
Degree；By exempting from cushion block tooling fixture or bracket spacer bar cage, guarantee steel reinforcement cage and mold bottom keep certain distance, this
Behave still belongs to the first time, and traditional steel reinforcement cage needs to place cushion block in mold bottom before entering mould, increases construction cost, and this sets
The support rack type tooling of meter, both ensure that the precise positioning of steel reinforcement cage, and can reduce construction cost, be to kill two birds with one stone.Bracket
Be it is reusable, can reach reduction expenditure, the effect of save the cost.
Installation of embedded parts: after steel reinforcement cage installs, should also fix built-in fitting, and U-shaped pre-embedded bolt is inserted into steel reinforcement cage first
Corresponding position and screw on nut, nut is twisted in correct position, U-shaped pre-embedded bolt is pierced into pre-embedded steel slab after being twisted by nut
In hole, and pre-embedded steel slab and 4 nuts are tightened, is finally adjacent to pre-embedded steel slab and template, it is necessary to assure railing shield is pre-buried
Bolt is higher by 50mm；Sound barrier shield pre-embedded bolt is higher by 80mm；
Concreting: including secondary vibration moulding process；
Plastering: a daubing, quadric-plastering moulding process: carrying out first time daubing after the completion of making firm by ramming for the first time, the
Secondary make firm by ramming carries out primary essence plastering after the completion, carries out one-coat plastering again before pre-hardening, cap locations are opened before initial set, secondary to smear
Face molding；
Concrete plucking: hair pulling treatment is carried out after concrete initial set in time；
Curing in the mold: it is conserved after the prefabricated initial set of shield, covers geotextiles when maintenance above shield, it is ensured that comprehensive to support
Shield；
Demoulding transhipment: curing at moisture-retention and heat-insulation is carried out to concrete after pouring completion and plucking；
Spray maintenance: being transported to spray maintenance area after shield demoulding, shield puts underlay flitch, upper cover non-woven fabrics, spray
When ensure 360 ° of shield maintenance without dead angle；
Pile storage: after concrete reaches regulation curing time, being transported to finished product pile field, and stacking of classifying, and
Perform mark.
It is preferred that steel bar meter: using full-automatic numerical control stirrup bender, carry out straightening, scale, curved to reinforcing bar
Hoop, cutting, greatly improved production work efficiency, it is ensured that product standard is unified.A new generation that full-automatic reinforcing bar hoop bender uses " surmounts
No. 5 " type, each model round steel, the spiral of 6mm~12mm diameter can be processed；
The binding of shield steel reinforcement cage carries out scale positioning using shield steel reinforcement cage welding tooling；
Shield steel reinforcement cage binds the form combined with tied silk using welding, and welding uses carbon dioxide gas arc welding.
Carbon dioxide gas arc welding is easy to operate, arc stability, welding quality is good, forming is beautiful, weldment deformation is small, postwelding is not required to clearly
Slag can be effectively protected main reinforcement and not be soldered damage.
It is preferred that concreting:
1 concrete transports to small-sized prefabricated member factory, and concrete fills vehicle action of forced stirring 1 minute, keeps the concrete for filling vehicle uniform；
After 2 concrete fill vehicle stirring 1 minute, testing crew is surveyed the slump of concrete and can be poured after the slump is qualified
It builds；Concrete curing test block processed simultaneously；
Check whether shield demoulding agent of mould is brushed uniformly before 3 concretings, whether built-in fitting, steel reinforcement cage installation are firm
Gu whether position is accurate；
4 shield steel reinforcement cage displacements in order to prevent, are fixed framework of steel reinforcement using steel bar spacer bracket before making firm by ramming；Bracket
Necessary fixation, quantity is enough, ensures to need each steel reinforcement cage of each prefabricated shield to have bracket before construction；Pad
The taking-up when making firm by ramming for the second time of block bracket；
5 first times made firm by ramming, by coagulation poured into shield, were vibrated with 40mm immersion vibrator, spacing of vibrating 200mm
It is uniformly, fast to insert slow pumping, a vibration point 20 seconds to 30 seconds, 6~7 vibration points of every block of shield to 300mm；Vibrating head is forbidden to contact template,
Guarantee from template spacing 50mm；
6 make firm by ramming for second, and make time interval firm by ramming for the first time 10 minutes, are vibrated, are shaken with 30mm plug-in type vibrating stick
Spacing 200mm to 300mm is smash, it is uniformly, fast to insert slow pumping, each vibration point 20 seconds to 30 seconds, 6~7 vibration points of every block of shield；Vibrating head
From end template top 50mm to 100mm；Pass through the case where can be effectively solved bubble, pitted skin of vibrating twice.
It is preferred that plucking: the plucking time is 1 hour to 2 after the completion of concreting according to weather temperature conditions
Hour, it is smooth to concrete surface progress, plucking is carried out after smooth, plucking uses special wire brush plucking, kerve depth 2mm, width
1mm, spacing 5mm guarantee that lines is uniform within the scope of plucking, and clear, neat, depth meets the requirements.
It is preferred that curing in the mold: shield curing in the mold system includes water pump, water supplying pipe and switch, spray head, support
Quarter bend, gutter are conserved after the prefabricated initial set of shield, cover geotextiles, setting above each shield when maintenance above shield
One spray head, it is ensured that comprehensive maintenance；
Moisturizing is carried out during curing in the mold, concrete component reaches 2.5MPa or more, and its surface and corner angle are not because of demoulding
And when damaging, i.e., component is transported to maintenance area's automatic sprinkler fire-extinguishing system after demoulding and non-textile mulch is added to support by dismountable mold
Shield；
It is preferred that spray maintenance: being transported to spray maintenance area using fork truck after shield demoulding, curing system includes
High-pressure hydraulic pump, world spray head, water supplying pipe, time switch composition, spray interval time are set as 1 hour, and spray continues 5 points
Clock, and adjusted at any time according to weather condition；World spray head works at the same time when spray system works, it is ensured that 360 ° of maintenances of shield are without dead
Angle, spray-water use water circulation system, and maintenance is imported in sedimentation basin by ditch with water and is recycled, economical environment-protective；
It is preferred that pile is stored: shield being transported to finished product pile field, shield stacking form and finished product with fork truck
Protection:
2 10cm*10cm flitches of underlay when 1 shield pile pile, stacking height is determining according to forklift lifting height, generally
6 layers of pile；
2 pile regions are separately provided, and separate with other regions, prevent other vehicle collisions from damaging shield；
3 pile regions setting mark.
For high-speed railway bridge floor shield without gasket prefabricated construction device, it includes welding tooling, bracket and mold；
Welding tooling includes steel reinforcement cage support, first crossbeam, second cross beam, the 4th crossbeam and the 5th crossbeam, steel reinforcement cage branch
Support includes vertical supporting and cross-brace, and vertical supporting is connected into an entirety by cross-brace；
First crossbeam, second cross beam, the 4th crossbeam and the setting of the 5th crossbeam are in steel reinforcement cage support, wherein first crossbeam
The side of steel reinforcement cage support is set with second cross beam, the other side of steel reinforcement cage support is arranged in the 4th crossbeam and the 5th crossbeam,
Finite place piece is set on first crossbeam；
The mold includes bottom plate, backboard, end plate, cover board and baffle, and the end plate includes left side plate and right end plate；
Backboard, left side plate and right end plate are hinged with bottom plate respectively；
Baffle is bolted with left side plate, and baffle is connect by bolt with right end plate；
Cover board is arranged on end plate；
The bottom plate both ends are pasted with sealing strip, and sealing strip is posted at the backboard both ends；
The bracket includes bottom positioning plate and altitude location part, and altitude location part is fixed with bottom positioning plate.
It is preferred that sequence from top to bottom is followed successively by second cross beam, the 4th crossbeam, the 5th in spatial position
Crossbeam and first crossbeam.
It is preferred that wherein second cross beam, third crossbeam and the 4th crossbeam are located at the invention also includes third crossbeam
In same level, second cross beam is successively up the 4th crossbeam and first crossbeam.
It is preferred that locating part is Y shape or V-arrangement, for limiting the position of reinforcing bar.
It is preferred that being provided with several locating parts on first crossbeam, the lower section of each locating part is in second cross beam
Corresponding position setting it is fluted；
Groove corresponding with locating part position is also equipped on the 5th crossbeam and the 4th crossbeam.
It is preferred that being arranged at third crossbeam position corresponding with locating part fluted.
It is preferred that first crossbeam is detachably connected with steel reinforcement cage support.First crossbeam can be placed directly in steel reinforcement cage
In support or first crossbeam is bolted with steel reinforcement cage support.Preferably, first crossbeam is made of angle steel.
It is preferred that vertical supporting and cross-brace are detachably connected, for example it is bolted or passes through method
Blue disk connection.
It is made it is preferred that vertical supporting and cross-brace are all made of angle steel, passes through bolt between angle steel and angle steel
Connection.Altitude location part and bottom positioning plate are integrally formed or weld.
It is preferred that a bracket is placed at the both ends of mold respectively, a bracket include a bottom positioning plate and
Two altitude location parts, altitude location part are welded on the positioning plate of bottom.
It is preferred that the end of bottom positioning plate is provided with limiting section, between limiting section and bottom positioning plate middle part
Form a U-lag.
It is preferred that altitude location part is L shape angle steel, bottom positioning plate is plain plate, and L shape angle steel is welded on flat steel
On plate.
It is preferred that the end plate is L shape, baffle is vertically placed on the first order step of end plate and passes through spiral shell
Bolt is fixed with end plate；Cover board is placed across on the first order step of end plate and is fixed by bolt and end plate；After mold installation,
The top surface of end plate, backboard and baffle is on the same horizontal plane.
It is preferred that entire mold is L-shaped, it is provided with supporting plate on bottom plate, is all provided in backboard, left side plate and right end plate
It is equipped with the rotation section with supporting plate cooperation, aperture on rotation section, rotation section is connect with supporting plate by pin shaft；Each rotation section with two
Supporting plate is used cooperatively, and rotation section is arranged between two supporting plates, and two supporting plates include the first supporting plate and the second supporting plate, and pin shaft is successively
Three is connected across the first supporting plate, rotation section and the second supporting plate.
It is preferred that the aperture of pin shaft front end is fixed after pin shaft passes through supporting plate and rotation section by split pin.
It is preferred that rotation section is a plate, plate is fixed with backboard or left side plate or right end plate；
Rotation section and backboard are welded or are integrally formed；
Rotation section and left side plate are welded or are integrally formed；
Rotation section and right end plate are welded or are integrally formed.
It is preferred that being provided with arcuate projection on bottom plate.
The beneficial effects of the present invention are: prepare bridge floor shield by way of making steel reinforcement cage, manufactured shield quality compared with
It is good, meet technique requirement, and since the globality and ease for use that are provided with built-in fitting, shield are all greatly improved.
Detailed description of the invention
Fig. 1 is one of schematic structural view of the invention；
Fig. 2 is the two of schematic structural view of the invention；
Fig. 3 is the three of schematic structural view of the invention；
Fig. 4 is the four of schematic structural view of the invention；
Fig. 5 is reinforcement cage structure schematic diagram；
Fig. 6 is steel reinforcement cage partial structural diagram；
Fig. 7 is one of shield structure schematic diagram；
Fig. 8 is the two of shield structure schematic diagram；
Fig. 9 is one of the structural schematic diagram of pre-embedded steel slab；
Figure 10 is the second structural representation of pre-embedded steel slab；
Figure 11 is the structural schematic diagram of pre-embedded bolt；
Figure 12 is the structural schematic diagram of welding tooling；
Figure 13 is this engineering method flow diagram；
In figure, 1- end plate, 2- sealing strip, 3- backboard, 4- embedded hole, 5- bottom plate, 6- cover board, 7- slot, 8- shield, 9-
Built-in fitting, 9.1- pre-embedded steel slab, 9.2- pre-embedded bolt, 10- mould support, 11- baffle, 12- bracket, 13- steel reinforcement cage, 13.1-
Jiong shape reinforcing bar, 13.2- transverse direction fixed steel bars, 13.3-6 font reinforcing bar, 13.4- longitudinal reinforcement, the support of 14- steel reinforcement cage, 15- first
Crossbeam, 16- locating part, 17- second cross beam, 18- third crossbeam, the 4th crossbeam of 19-, the 5th crossbeam of 20-, 21- groove.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing, but protection scope of the present invention is not limited to
It is as described below.
As shown in Figure 1, high-speed railway bridge floor shield is without gasket prefabricated construction engineering method, it includes the following steps:
Step 1: the entering of reinforcing steel bar；
Step 2: steel reinforcement cage 13 is made in steel bar meter；
Step 3: steel reinforcement cage 13 enters mould；
Step 4: installation of embedded parts；
Step 5: concreting；
Step 6: plastering.
In a preferred embodiment, as shown in figure 13, this method or engineering method further include following steps:
Step 7: concrete plucking；
Step 8: curing in the mold；
Step 9: demoulding operating；
Step 10: spray maintenance；
Step 11: pile storage.
In a preferred embodiment, the entering of reinforcing steel bar: testing crew is notified to sample inspection, same Times after the entering of reinforcing steel bar in time
Supervisor's witness, raw material of reinforcement rebar can use after the assay was approved；
Steel bar meter: setting-out is carried out to various specifications reinforcing bar according to design drawing, is carried out by Lofting Calculation reinforcing bar length
Blanking reinforcing bar is pressed design drawing bending forming, the reinforcing bar of bending forming is placed on the enterprising binding of welding tooling, handed over by cross by blanking
Fork binding, gas shield welding welding, forbids iron wire head to stretch in concrete；
Steel reinforcement cage 13 enters mould: the shield steel reinforcement cage 13 of binding forming being put into assembled mold, if used before
The mold crossed needs to wait for reusing after release agent is dry；Steel reinforcement cage 13 will be put down gently when being put into mold, forbid to collide mold；Embedded iron
Part fixes, and exempts from cushion block tooling fixture (i.e. bracket 12) for steel reinforcement cage 13 from 30~39mm of mold bottom with special, it is ensured that coagulation
Protective soil layer thickness；
Installation of embedded parts: after steel reinforcement cage 13 installs, should also fix built-in fitting, and U-shaped pre-embedded bolt is inserted into reinforcing bar first
Nut is simultaneously screwed in the corresponding position of cage 13, nut is twisted in correct position, nut pierces into U-shaped pre-embedded bolt after being twisted pre-buried
In steel plate hole, and pre-embedded steel slab and 4 nuts are tightened, is finally adjacent to pre-embedded steel slab and template, it is necessary to assure railing shield
Pre-embedded bolt is higher by 50mm；Sound barrier shield pre-embedded bolt is higher by 80mm；
Concreting: including secondary vibration moulding process；
Plastering: a daubing, quadric-plastering moulding process: carrying out first time daubing after the completion of making firm by ramming for the first time, the
Secondary make firm by ramming carries out primary essence plastering after the completion, carries out one-coat plastering again before pre-hardening, cap locations are opened before initial set, secondary to smear
Face molding；
Concrete plucking: hair pulling treatment is carried out after concrete initial set in time；
Curing in the mold: it is conserved after the prefabricated initial set of shield, covers geotextiles when maintenance above shield, it is ensured that comprehensive to support
Shield；
Demoulding transhipment: curing at moisture-retention and heat-insulation is carried out to concrete after pouring completion and plucking；
Spray maintenance: being transported to spray maintenance area after shield demoulding, shield puts underlay flitch, upper cover non-woven fabrics, spray
When ensure 360 ° of shield maintenance without dead angle；
Pile storage: after concrete reaches regulation curing time, being transported to finished product pile field, and stacking of classifying, and
Perform mark.
In a preferred embodiment, steel bar meter: use full-automatic numerical control stirrup bender, to reinforcing bar carry out straightening,
Production work efficiency greatly improved in scale, bending hoop, cutting, it is ensured that product standard is unified.New the one of full-automatic reinforcing bar hoop bender use
Generation " surmounting No. 5 " type, can process each model round steel, the spiral of 6mm~12mm diameter；
The binding of shield steel reinforcement cage 13 carries out scale positioning using 13 welding tooling of shield steel reinforcement cage；
Shield steel reinforcement cage 13 binds the form combined with tied silk using welding, and welding is using CO 2 gas-shielded
Weldering.Carbon dioxide gas arc welding is easy to operate, arc stability, welding quality is good, forming is beautiful, weldment deforms small, postwelding not
Scarfing cinder is needed, main reinforcement can be effectively protected and be not soldered damage.
In a preferred embodiment, concreting:
1 concrete transports to small-sized prefabricated member factory, and concrete fills vehicle action of forced stirring 1 minute, keeps the concrete for filling vehicle uniform；
After 2 concrete fill vehicle stirring 1 minute, testing crew is surveyed the slump of concrete and can be poured after the slump is qualified
It builds；Concrete curing test block processed simultaneously；
Check whether shield demoulding agent of mould is brushed uniformly before 3 concretings, whether built-in fitting, the installation of steel reinforcement cage 13 are firm
Gu whether position is accurate；
4 displacements of shield steel reinforcement cage 13 in order to prevent, are fixed framework of steel reinforcement using steel bar spacer bracket before making firm by ramming；Pad
The necessary fixation of block bracket, quantity is enough, ensures to need each steel reinforcement cage 13 of each prefabricated shield equal before construction
There is cushion block bracket；The taking-up when making firm by ramming for the second time of cushion block bracket；
5 first times made firm by ramming, by coagulation poured into shield, were vibrated with 40mm immersion vibrator, spacing of vibrating 200mm
It is uniformly, fast to insert slow pumping, a vibration point 20 seconds to 30 seconds, 6~7 vibration points of every block of shield to 300mm；Vibrating head is forbidden to contact template,
Guarantee from template spacing 50mm；
6 make firm by ramming for second, and make time interval firm by ramming for the first time 10 minutes, are vibrated, are shaken with 30mm plug-in type vibrating stick
Spacing 200mm to 300mm is smash, it is uniformly, fast to insert slow pumping, each vibration point 20 seconds to 30 seconds, 6~7 vibration points of every block of shield；Vibrating head
From end template top 50mm to 100mm；Pass through the case where can be effectively solved bubble, pitted skin of vibrating twice.
In a preferred embodiment, plucking: the plucking time is 1 after the completion of concreting according to weather temperature conditions
Hour is smooth to concrete surface progress to 2 hours, and plucking is carried out after smooth, and plucking uses special wire brush plucking, kerve depth
2mm, width 1mm, spacing 5mm guarantee that lines is uniform within the scope of plucking, and clear, neat, depth meets the requirements.
In a preferred embodiment, curing in the mold: shield curing in the mold system includes water pump, water supplying pipe and switch, spray
Head, support quarter bend, gutter are conserved after the prefabricated initial set of shield, cover geotextiles when maintenance above shield, on each shield
One spray head of side's setting, it is ensured that comprehensive maintenance；
Moisturizing is carried out during curing in the mold, concrete component reaches 2.5MPa or more, and its surface and corner angle are not because of demoulding
And when damaging, i.e., component is transported to maintenance area's automatic sprinkler fire-extinguishing system after demoulding and non-textile mulch is added to support by dismountable mold
Shield；
In a preferred embodiment, spray maintenance area, maintenance system spray maintenance: are transported to using fork truck after shield demoulding
Uniting includes high-pressure hydraulic pump, world spray head, water supplying pipe, and time switch composition, spray interval time is set as 1 hour, and spray is held
It is 5 minutes continuous, and adjusted at any time according to weather condition；World spray head works at the same time when spray system works, it is ensured that 360 ° of shield are supported
For shield without dead angle, spray-water uses water circulation system, and maintenance is imported in sedimentation basin by ditch with water and is recycled, and ring is saved
It protects；
In a preferred embodiment, pile is stored: shield being transported to finished product pile field, shield stacking form with fork truck
And finished product protection:
2 10cm*10cm flitches of underlay when 1 shield pile pile, stacking height is determining according to forklift lifting height, generally
6 layers of pile；
2 pile regions are separately provided, and separate with other regions, prevent other vehicle collisions from damaging shield；
3 pile regions setting mark.
In a preferred embodiment, engineering method further includes checking procedure, project and processing mode such as Figure 13 of required inspection
It is shown, specifically:
The entering of reinforcing steel bar needs, if unqualified, to carry out processing of withdrawing from the arena by examining；
After steel reinforcement cage is made in Steel Reinforcing Bar Material, welding, binding, inspection of applying for checking and examination is carried out, it is qualified then steel reinforcement cage enters mould, do not conform to
Lattice are welded again or are bound；
Built-in fitting needs to test after marching into the arena, disqualified upon inspection, carries out processing of withdrawing from the arena, and carries out again after the assay was approved pre-buried
Part installation；
It needs to check concrete quality before concreting, passed examination carries out concreting again；
After pile storage, if necessary to shield, need to test to shield before appearance, qualified shield can go out
, underproof shield carries out scrapping processing.
Traditional high-speed railway bridge floor shield 8 as shown in Figure 7 and Figure 8, during production, by will tie up in advance or
The steel reinforcement cage 13 (as shown in Figure 5 and Figure 6) that person is welded is placed in mold, refills concrete realization.Steel reinforcement cage 13 needs
A part of reinforcing bar is exposed outside, therefore steel reinforcement cage 13 includes preburying part and exposed portion, and exposed portion is U-shaped reinforcing bar.More specifically,
Steel reinforcement cage 13 includes Jiong shape reinforcing bar 13.1, lateral fixed steel bars 13.2, figure-six reinforcing bar 13.3 and longitudinal reinforcement 13.4, laterally solid
Determine reinforcing bar 13.2 and fixes Jiong shape reinforcing bar 13.1, figure-six reinforcing bar 13.3 and longitudinal reinforcement 13.4 respectively.
As shown in FIG. 1 to FIG. 4 and Figure 12, for high-speed railway bridge floor shield without gasket prefabricated construction device, it includes welding
Tooling, bracket 12 and mold；
Welding tooling includes steel reinforcement cage support 14, first crossbeam 15, second cross beam 17, the 4th crossbeam 19 and the 5th crossbeam
20, steel reinforcement cage support 14 includes vertical supporting and cross-brace, and vertical supporting is connected into an entirety by cross-brace；
First crossbeam 15, second cross beam 17, the 4th crossbeam 19 and the setting of the 5th crossbeam 20 support on 14 in steel reinforcement cage,
In, the side that steel reinforcement cage supports 14, the 4th crossbeam 19 and the setting of the 5th crossbeam 20 is arranged in first crossbeam 15 and second cross beam 17
In the other side of steel reinforcement cage support 14, finite place piece 16 is set on first crossbeam 15；
The mold includes bottom plate 5, backboard 3, end plate 1, cover board 6 and baffle 11, the end plate 1 include left side plate and
Right end plate；Mold needs to carry out before use mold selection and two steps of Mold polishing；
Backboard 3, left side plate and right end plate are hinged with bottom plate 5 respectively；
Baffle 11 is bolted with left side plate, and baffle 11 is connect by bolt with right end plate；
Cover board 6 is arranged on end plate 1；
5 both ends of bottom plate are pasted with sealing strip 2, and sealing strip 2 is posted at 3 both ends of backboard；
The bracket 12 includes bottom positioning plate and altitude location part, and altitude location part is fixed with bottom positioning plate.
Altitude location part: for limiting the height of steel reinforcement cage 13, it is accordingly required in particular to, it is emphasized that traditional mold is not due to having
The bracket 12 for playing the role of lifting generally requires to place gasket on bottom plate 5, for being lifted steel reinforcement cage 13, avoids steel reinforcement cage 13
Bottom reinforcement bars it is exposed.But traditional approach, 8 mass of shield is influenced, and shape is unsightly, and increases construction cost.Highly
Locating piece can according to need, and adjusts the distance between 13 bottom of steel reinforcement cage and bottom plate 5, reduces while meeting production requirement
Construction cost, and due to the reusable property of bracket 12, it brings great convenience to production, in production with a batch of
It is very convenient when shield 8.
In a preferred embodiment, the plank of adjustment height can be made in altitude location part, for example, by altitude location part
Two parts, such as the first height part and the second height part is made, is connected between two altitude location parts by tunable arrangement.Than
Such as, the first height part is the first height cylinder, and the second height part is the second height cylinder, is connected through a screw thread between two cylinders, can be with
It realizes flexible.
In a preferred embodiment, in spatial position, it is horizontal that sequence from top to bottom is followed successively by second cross beam the 17, the 4th
Beam 19, the 5th crossbeam 20 and first crossbeam 15.
In a preferred embodiment, the invention also includes third crossbeam 18, wherein second cross beam 17, third crossbeam 18 with
4th crossbeam 19 is located in same level, and second cross beam 17 is successively up the 4th crossbeam 19 and first crossbeam 15.
In a preferred embodiment, locating part 16 is Y shape or V-arrangement, for limiting the position of reinforcing bar.
In a preferred embodiment, several locating parts 16 is provided on first crossbeam 15, under each locating part 16
Side is arranged fluted 21 in the corresponding position of second cross beam 17；
Groove 21 corresponding with 16 position of locating part is also equipped on the 5th crossbeam 20 and the 4th crossbeam 19.
In a preferred embodiment, fluted 21 are arranged at the position corresponding with locating part 16 of third crossbeam 18.
In a preferred embodiment, first crossbeam 15 is detachably connected with steel reinforcement cage support 14.First crossbeam 15 can be straight
It connects and is placed in steel reinforcement cage support 14 or first crossbeam 15 and steel reinforcement cage support 14 to be bolted.Preferably, first crossbeam
15 are made of angle steel.
In a preferred embodiment, vertical supporting and cross-brace are detachably connected, for example, be bolted or
It is connected by ring flange.
In a preferred embodiment, vertical supporting and cross-brace are all made of angle steel and are made, and lead between angle steel and angle steel
It crosses and is bolted.
Altitude location part and bottom positioning plate are integrally formed or weld.
In a preferred embodiment, a bracket 12 is placed at the both ends of mold respectively, and a bracket 12 includes a bottom
Portion's positioning plate and two altitude location parts, altitude location part are welded on the positioning plate of bottom.
In a preferred embodiment, the end of bottom positioning plate is provided with limiting section, in limiting section and bottom positioning plate
A U-lag is formed between portion.Limiting section protrusion, steel reinforcement cage 13 are placed between limiting section the left and right, it can be achieved that steel reinforcement cage 13
Limit, simultaneously as the effect of transverse slat ontology, may be implemented the front and back positioning of steel reinforcement cage 13.
In a preferred embodiment, altitude location part is L shape angle steel, and bottom positioning plate is plain plate, the welding of L shape angle steel
On plain plate.
In a preferred embodiment, mould support 10 is set below bottom plate 5.Mould support 10 includes being arranged in bottom plate 5
Under column, the column quantity preferably 4.It is highly preferred that mould support 10 includes column and the plate being arranged on column,
Plate is fixed with column, and bottom plate 5 is placed on plate, can also be further fixed by bolt.It is excellent at another
It selects in embodiment, universal wheel, mold easy to remove is arranged in the lower section of column.
In a preferred embodiment, the bolt hole that cover board 6 is connect with end plate 1 is slot 7, and baffle 11 and end plate 1 connect
The bolt hole connect is slot 7.
In a preferred embodiment, the end plate 1 is L shape, and baffle 11 is vertically placed on the first order step of end plate 1
It goes up and passes through bolt and end plate 1 is fixed；Cover board 6 is placed across on the first order step of end plate 1 and is consolidated by bolt and end plate 1
It is fixed；After mold installation, the top surface of end plate 1, backboard 3 and baffle 11 is on the same horizontal plane.
In a preferred embodiment, entire mold is L-shaped, and supporting plate, backboard 3, left side plate and right end are provided on bottom plate 5
The rotation section with supporting plate cooperation is provided on plate, aperture on rotation section, rotation section is connect with supporting plate by pin shaft；Each rotation
Portion is used cooperatively with two supporting plates, and rotation section is arranged between two supporting plates, and two supporting plates include the first supporting plate and the second supporting plate,
Pin shaft sequentially passes through the first supporting plate, rotation section and the second supporting plate and connects three.
In a preferred embodiment, pin shaft front end aperture, it is solid by split pin after pin shaft passes through supporting plate and rotation section
It is fixed.
In a preferred embodiment, rotation section is a plate, and plate is fixed with backboard 3 or left side plate or right end plate；
Rotation section and backboard 3 are welded or are integrally formed；
Rotation section and left side plate are welded or are integrally formed；
Rotation section and right end plate are welded or are integrally formed.
In a preferred embodiment, arcuate projection is provided on bottom plate 5, it is preferable that arcuate projection can be by cutting
Face is semicircular pipe and the fixed realization of bottom plate 5, for example welds, is integrally formed.Moreover, arcuate projection can also lead to
It crosses and welds a round tube or flat tube realization on bottom plate 5.
In a preferred embodiment, it is provided with embedded hole 4 on backboard 3, it is highly preferred that being provided on backboard 3 pre- at two
Two strip-shaped holes are arranged in buried via hole 4, every place's embedded hole 4, and embedded hole 4 is arranged in 3 two sides of backboard at two.Embedded hole 4 is pre- for installing
Embedded part 9, the built-in fitting 9 includes pre-embedded steel slab 9.1 and pre-embedded bolt 9.2, as shown in Fig. 9~Figure 11.
After 8 reinforcement installation of shield is good, built-in fitting 9 should be also fixed, first by U-shaped pre-embedded bolt 9.2 insertion steel reinforcement cage 13
Nut is simultaneously screwed in corresponding position, nut is twisted in correct position, U-shaped pre-embedded bolt 9.2 is pierced into pre-buried steel after being twisted by nut
In 9.1 hole of plate, and pre-embedded steel slab 9.1 and 4 nut is tightened, be finally adjacent to pre-embedded steel slab 9.1 and template (or it is U-shaped pre-
Bolt 9.2 is buried first to be fixed on backboard 3), guarantee that 8 pre-embedded bolt 9.2 of railing shield is higher by 50mm；The pre-buried spiral shell of sound barrier shield 8
Bolt 9.2 is higher by 80mm.
13 preparation method of steel reinforcement cage:
Step 1: fixture for assembling and welding, but first crossbeam 15 is not installed first；
Step 2: reinforcing bar is bent into Jiong shape reinforcing bar 13.1, lateral fixed steel bars 13.2, figure-six reinforcing bar 13.3 and is indulged
To reinforcing bar 13.4, preferably, in one crotch of end reinforced setting；
Step 3: first by figure-six reinforcing bar 13.3 and/or longitudinal reinforcement 13.4 according to certain intervals (such as between groove
Away from) be placed on welding tooling；
Step 4: after first crossbeam 15 is installed, then placing Jiong shape reinforcing bar 13.1, later by lateral fixed steel bars 13.2
Pierce into Jiong shape reinforcing bar 13.1, figure-six reinforcing bar 13.3 and/or longitudinal reinforcement 13.4 and figure-six reinforcing bar 13.3 and longitudinal reinforcement
In 13.4 spaces formed；
Step 5: by Jiong shape reinforcing bar 13.1 and the lateral welding of fixed steel bars 13.2 and/or binding；By figure-six reinforcing bar 13.3
And/or longitudinal reinforcement 13.4 and lateral fixed steel bars 13.2 are welded and/or are bound；By Jiong shape reinforcing bar 13.1 and figure-six reinforcing bar
13.3 and/or longitudinal reinforcement 13.4 welding and/or binding.
It should be noted that the sequence of above-mentioned steps one and step 2 can exchange.In step 4, Jiong can be first placed
After shape reinforcing bar 13.1, then first crossbeam 15 is installed.Special construction and special manufacture craft in view of steel reinforcement cage 13, therefore this steel
Muscle cage 13 can also be used as a part of engineering method device.
Project management department's precasting yard conserves component band mould, demoulding, together respectively by studying shield appearance quality trait
When by setting timing control, reach maintenance automation, by using exempt from cushion block bracket, hinge-type punching block, digital control hoop bender and
The techniques such as carbon dioxide gas arc welding, have saved cost of labor, improve presentation quality, meet owner's requirement, in owner, prison
Good reputation is achieved before reason and headquarter, office, the affirmative for having arrived certain headquarter of the presentation quality of shield also is commented by expert
For " shield presentation quality is completely best ", public praise is won for company, has achieved good social benefit.
The effect to require emphasis is:
Using exempting from cushion block construction technology
Cushion block construction technology is exempted from the construction process using shield, concrete pad can be replaced by exempting from cushion block steel bracket, from
And the cost of concrete pad has greatly been saved, according to on-site actual situations, each shield needs 5~7 cushion blocks, Gong Jijie
About 150000 cushion blocks, achieve preferable economic benefit.It is convenient to assemble and disassemble using bracket, quick, save cost of labor；Using
Bracket thickness of concrete cover can satisfy requirement, and surface is without cushion block pitted skin, it is ensured that presentation quality.In process aspect,
More stringent requirements are proposed for presentation quality of the Party A to shield.In order to reach these requirements, we change uses gasket in the past
The construction technology poured, the influence to avoid concrete gasket to the presentation quality of shaped component outer surface.Meanwhile it also saving
Purchase the construction cost of gasket.Improved by a series of innovation, new process and new material obtained Party A, management side and
The consistent favorable comment of design side.
Using digital control hoop bender construction technology
It is processed using traditional reinforcing steel bar hoop bending and needs 4~5 people, 1 people is only needed using digital control hoop bender, and can be round-the-clock
Reinforcing bar production is carried out, steel bar meter is daily more than 8t at full capacity.According to live actual count statistics indicate that, using digital control hoop bender
It processes machining accuracy and improves 50% or more than traditional artificial processing precision of reinforcing steel bar, the size for considerably reducing steel bar meter is missed
Difference avoids doing over again.The technique save the cost improves work efficiency, has biggish economic value.
The present invention innovatively devises the outer steel reinforcement cage positioning device of convenient and fast mold bracket in other words for the first time, to realize
The positioning process of embedded bar cage four direction up and down, avoids because of gasket caused by gasket is exposed and perfusion coagulation
The color difference of soil, and, steel reinforcement cage is excessively close to lower die face in a mold, causes dew muscle and other issues occur.This engineering method phase
Than previous construction technology, required construction personnel is less, and high production efficiency is with short production cycle, and construction cost is low, and construction quality is easy
Guarantee, operation is simple.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, it is noted that all
Made any modifications, equivalent replacements, and improvements etc. within the spirit and principles in the present invention should be included in guarantor of the invention
Within the scope of shield.
Claims (8)
1. high-speed railway bridge floor shield is without gasket prefabricated construction engineering method, which is characterized in that it includes the following steps:
Step 1: the entering of reinforcing steel bar；
Step 2: steel reinforcement cage is made in steel bar meter；
Step 3: steel reinforcement cage enters mould；
Step 4: installation of embedded parts；
Step 5: concreting；
Step 6: plastering；
Step 7: concrete plucking；
Step 8: curing in the mold；
Step 9: demoulding operating；
Step 10: spray maintenance；
Step 11: pile storage；
The entering of reinforcing steel bar: notifying testing crew to sample inspection in time after the entering of reinforcing steel bar, witnesses with Times supervisor, raw material of reinforcement rebar
It can use after the assay was approved；
Steel bar meter: carrying out setting-out to various specifications reinforcing bar according to design drawing, carry out blanking by Lofting Calculation reinforcing bar length,
Blanking reinforcing bar is pressed into design drawing bending forming, the reinforcing bar of bending forming is placed on the enterprising binding of welding tooling, is tied up by right-angled intersection
It pricks, gas shield welding welding forbids iron wire head to stretch in concrete；
Steel reinforcement cage enters mould: the shield steel reinforcement cage of binding forming is put into assembled mold；Steel reinforcement cage is put into light when mold
It puts, forbids to collide mold；Embedded iron parts fix, with exempting from cushion block tooling fixture for steel reinforcement cage from 30~39mm of mold bottom, really
Protect thickness of concrete cover；
Installation of embedded parts: after steel reinforcement cage installs, built-in fitting should be also fixed, first by the phase of U-shaped pre-embedded bolt insertion steel reinforcement cage
It answers position and screws on nut, nut is twisted in correct position, U-shaped pre-embedded bolt is pierced into pre-buried steel plate hole after being twisted by nut
It is interior, and pre-embedded steel slab and 4 nuts are tightened, finally pre-embedded steel slab and template are adjacent to, it is necessary to assure the pre-buried spiral shell of railing shield
Bolt is higher by 50mm；Sound barrier shield pre-embedded bolt is higher by 80mm；
Concreting: including secondary vibration moulding process；
Plastering: quadric-plastering moulding process: a daubing carries out first time daubing, for the second time after the completion of making firm by ramming for the first time
Carry out primary essence plastering after the completion of making firm by ramming, carry out one-coat plastering again before initial set, cap locations are opened before initial set, quadric-plastering at
Type；
Concrete plucking: hair pulling treatment is carried out after concrete initial set in time；
Curing in the mold: it is conserved after the prefabricated initial set of shield, covers geotextiles when maintenance above shield, it is ensured that comprehensive maintenance；
Demoulding transhipment: curing at moisture-retention and heat-insulation is carried out to concrete after pouring completion and plucking；
Spray maintenance: being transported to spray maintenance area after shield demoulding, shield puts underlay flitch, upper cover non-woven fabrics, and when spray is true
360 ° of shield maintenances are protected without dead angle；
Pile storage: after concrete reaches regulation curing time, it is transported to finished product pile field, and stacking of classifying, and performed
Mark.
2. high-speed railway bridge floor shield according to claim 1 is without gasket prefabricated construction engineering method, it is characterised in that:
Steel bar meter: using full-automatic numerical control stirrup bender, carries out straightening, scale, bending hoop, cutting to reinforcing bar, greatly improves
Production work efficiency, it is ensured that product standard is unified；
The binding of shield steel reinforcement cage carries out scale positioning using shield steel reinforcement cage welding tooling；
Shield steel reinforcement cage binds the form combined with tied silk using welding, and welding uses carbon dioxide gas arc welding.
3. high-speed railway bridge floor shield according to claim 1 is without gasket prefabricated construction engineering method, it is characterised in that:
Concreting:
1 concrete transports to small-sized prefabricated member factory, and concrete fills vehicle action of forced stirring 1 minute, keeps the concrete for filling vehicle uniform；
After 2 concrete fill vehicle stirring 1 minute, testing crew is surveyed the slump of concrete and can be poured after the slump is qualified；Together
When concrete curing test block；
Check whether shield demoulding agent of mould is brushed uniformly before 3 concretings, built-in fitting, steel reinforcement cage install whether secured, position
Whether set accurate；
4 shield steel reinforcement cage displacements in order to prevent, are fixed framework of steel reinforcement using steel bar spacer bracket before making firm by ramming；Bracket is necessary
Fixation, quantity is enough, ensures to need each steel reinforcement cage of each prefabricated shield to have bracket before construction；Cushion block branch
Frame taking-up when making firm by ramming for the second time；
5 first times made firm by ramming, by coagulation poured into shield, were vibrated with 40mm immersion vibrator, and spacing of vibrating 200mm is extremely
300mm is uniformly, fast to insert slow pumping, a vibration point 20 seconds to 30 seconds, 6~7 vibration points of every block of shield；Vibrating head is forbidden to contact template, protects
It demonstrate,proves from template spacing 50mm；
6 make firm by ramming for second, and make time interval firm by ramming for the first time 10 minutes, are vibrated with 30mm plug-in type vibrating stick, between vibrating
It is uniformly, fast to insert slow pumping, each vibration point 20 seconds to 30 seconds, 6~7 vibration points of every block of shield away from 200mm to 300mm；Vibrating head is the bottom of from
Template top 50mm to 100mm；Pass through the case where can be effectively solved bubble, pitted skin of vibrating twice.
4. high-speed railway bridge floor shield according to claim 1 is without gasket prefabricated construction engineering method, it is characterised in that:
Plucking: the plucking time is 1 hour to 2 hours after the completion of concreting, to concrete surface according to weather temperature conditions
Carry out it is smooth, it is smooth after carry out plucking, plucking use special wire brush plucking, kerve depth 2mm, width 1mm, spacing 5mm, guarantee drawing
Lines is uniform in hair range, and clear, neat, depth meets the requirements.
5. high-speed railway bridge floor shield according to claim 1 is without gasket prefabricated construction engineering method, it is characterised in that:
Curing in the mold: shield curing in the mold system includes water pump, water supplying pipe and switch, spray head, support quarter bend, gutter, shield
It is conserved after prefabricated initial set, covers geotextiles when maintenance above shield, a spray head is set above each shield, it is ensured that Quan Fang
Position maintenance；
Moisturizing is carried out during curing in the mold, concrete component reaches 2.5MPa or more, and its surface and corner angle are not damaged because of demoulding
Component is transported to maintenance area's automatic sprinkler fire-extinguishing system after demoulding and non-textile mulch is added to conserve by bad when, i.e., dismountable mold.
6. high-speed railway bridge floor shield according to claim 1 is without gasket prefabricated construction engineering method, it is characterised in that:
Spray maintenance: being transported to spray maintenance area using fork truck after shield demoulding, and curing system includes high-pressure hydraulic pump, world spray
Head, water supplying pipe, time switch composition, spray interval time are set as 1 hour, and spray continues 5 minutes, and according to weather condition
It adjusts at any time；World spray head works at the same time when spray system works, it is ensured that 360 ° of shield maintenances use water without dead angle, spray-water
The circulatory system, maintenance are imported in sedimentation basin by ditch with water and are recycled, economical environment-protective.
7. high-speed railway bridge floor shield according to claim 1 is without gasket prefabricated construction engineering method, it is characterised in that: pile is deposited
It puts: shield being transported to finished product pile field, shield stacking form and finished product protection with fork truck:
2 10cm*10cm flitches of underlay when 1 shield pile pile, stacking height is determining according to forklift lifting height, general pile
6 layers；
2 pile regions are separately provided, and separate with other regions, prevent other vehicle collisions from damaging shield；
3 pile regions setting mark.
8. a kind of device applied to engineering method described in claim 1, it is characterised in that: it includes welding tooling, bracket and mold；
Welding tooling includes steel reinforcement cage support, first crossbeam, second cross beam, the 4th crossbeam and the 5th crossbeam, steel reinforcement cage support packet
Vertical supporting and cross-brace are included, vertical supporting is connected into an entirety by cross-brace；
First crossbeam, second cross beam, the 4th crossbeam and the setting of the 5th crossbeam are in steel reinforcement cage support, wherein first crossbeam and the
Two crossbeams are arranged in the side of steel reinforcement cage support, and the 4th crossbeam and the 5th crossbeam are arranged in the other side of steel reinforcement cage support, and first
Finite place piece is set on crossbeam；
The mold includes bottom plate, backboard, end plate, cover board and baffle, and the end plate includes left side plate and right end plate；
Backboard, left side plate and right end plate are hinged with bottom plate respectively；
Baffle is bolted with left side plate, and baffle is connect by bolt with right end plate；
Cover board is arranged on end plate；
The bottom plate both ends are pasted with sealing strip, and sealing strip is posted at the backboard both ends；
The bracket includes bottom positioning plate and altitude location part, and altitude location part is fixed with bottom positioning plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711235434.XA CN108035251B (en) | 2017-11-30 | 2017-11-30 | High-speed railway bridge floor shield is without gasket prefabricated construction engineering method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711235434.XA CN108035251B (en) | 2017-11-30 | 2017-11-30 | High-speed railway bridge floor shield is without gasket prefabricated construction engineering method and device |
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| CN108035251A CN108035251A (en) | 2018-05-15 |
| CN108035251B true CN108035251B (en) | 2019-08-02 |
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| JPH1193119A (en) * | 1997-09-16 | 1999-04-06 | 純夫 ▲はま▼田 | Connection of precast concrete slab |
| JP3666326B2 (en) * | 1999-12-06 | 2005-06-29 | 鹿島建設株式会社 | Cross-section precast segment method |
| AU2003259613A1 (en) * | 2002-11-01 | 2004-05-20 | Bridge & Marine Engineering Pty. Ltd. | Structural Beam and Method of Manufacture |
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| CN108035251A (en) | 2018-05-15 |
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Effective date of registration: 20200416 Address after: 610000, No. two, section 100, North Ring Road, Jinniu District, Sichuan, Chengdu Patentee after: CONSTRUCTION COMPANY OF CHINA RAILWAY NO.8 ENGNEERING GROUP Co.,Ltd. Address before: 610000 No. 4 Qiaodong street, northwest Jinniu District, Sichuan, Chengdu Patentee before: NO.4 ENGINEERING CO., LTD. OF CHINA RAILWAY NO.8 BUREAU |
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