CN106223204A - A kind of prestressing force draws high narrow region aids construction stretching chassis and construction method - Google Patents
A kind of prestressing force draws high narrow region aids construction stretching chassis and construction method Download PDFInfo
- Publication number
- CN106223204A CN106223204A CN201610741352.1A CN201610741352A CN106223204A CN 106223204 A CN106223204 A CN 106223204A CN 201610741352 A CN201610741352 A CN 201610741352A CN 106223204 A CN106223204 A CN 106223204A
- Authority
- CN
- China
- Prior art keywords
- steel plate
- chassis
- construction
- screw
- leading screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
A kind of prestressing force draws high narrow region aids construction stretching chassis and construction method, including upper steel plate, lower steel plate, screw, steel thimble and universal wheel.Screw has screwed leading screw and has fixed nut, and four screws are welded on lower steel plate by setting position.Upper steel plate is welded with crescent moon steel plate, and the screw opposite position at upper steel plate Yu lower steel plate is welded with steel thimble.The steel thimble of upper steel plate is sleeved on the screw of lower steel plate, and universal wheel is fixed on below lower steel plate by setting position, constitutes stretch-draw chassis.Its construction method includes being placed on lower steel plate Manual hydraulic jack；Job platform is set up；Tensioning equipment is installed at upper steel plate crescent moon steel plate；Jacking chassis；Tensioning construction.Large-sized prestress tensioning equipment is installed to high and narrow construction area by the present invention, carries out integral tension operation, makes whole bundle steel strand wires synchronous tension, it is ensured that consistent with bundle steel strand wires stretch value, it is ensured that tensioning construction quality.
Description
Technical field
The present invention relates to bridge construction prestressing stretching technique field, particularly relate to a kind of prestressing force and draw high narrow region
Auxiliary construction stretch-draw chassis and construction method.
Background technology
Along with era development, bridge Construction Technology is maked rapid progress, and prestress wire is in bridge and other Structural Engineerings
Application also in fast development, stretching construction quality control becomes the emphasis in full-bridge service life, but owing to cast-in-situ box girder end is horizontal
The structure stretching end positions such as beam are positioned at high and narrow construction area, and construction stretching equipment volume is big, heavy, it is difficult to reach predetermined
Specify position, use small-sized tensioning equipment to carry out stretching single steel strand construction in the past, cause whole bundle steel strand tension asynchronous,
Stretch value deviation is big, and construction quality is difficult to ensure that.My unit uses stretch-draw chassis high narrow region under beam of self reliant rebuilding to make to open
Draw the equipment stretch-draw application and construction engineering method that carries out in place, actual in overpass engineering, effectively large-scale tensioning equipment is installed to
Specify construction location, carry out prestress wire integral tension, it is ensured that steel strand tension precision controls, it is ensured that bridge
Construction quality, and the security performance of bridge and service life.The present invention improves work efficiency, has ensured production product (bridge
Beam) security function, there is significant economic benefit and social benefit.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of utilization stretch-draw chassis and is installed by large-sized prestress tensioning equipment
To high and narrow construction area, carry out prestress wire integral tension operation, make whole bundle steel strand wires synchronous tension, it is ensured that with
Bundle steel strand wires stretch value is consistent, it is ensured that the prestressing force of tensioning construction quality draws high narrow region aids construction stretching platform
Car and construction method.
The technical scheme is that
A kind of prestressing force draws high narrow region aids construction stretching chassis, including upper steel plate, lower steel plate, crescent moon steel plate, taenidium
Thick stick, leading screw fix nut, steel thimble and universal wheel.Described screw is four, has all screwed leading screw and has fixed nut, described
Four screws are welded on lower steel plate by setting position.Above described upper steel plate, both sides are respectively welded crescent moon steel plate,
Upper steel plate is welded with four steel thimbles with four screw opposite positions of lower steel plate.Four steel thimble suits of upper steel plate
On four screws of lower steel plate, when upper steel plate ascending, descending, screw leading screw and fix nut and be fixed on steel thimble bottom, make
Upper steel plate ascending, descending is to specifying position.Described universal wheel is four, and four universal wheels are fixed on below lower steel plate by setting position,
Constitute prestressing force and draw high narrow region aids construction stretching chassis.
Prestressing force draws high the construction method of narrow region aids construction stretching chassis, including following method:
Nut fixed by leading screw on fastening screw, is placed on lower steel plate by Manual hydraulic jack, decontrols leading screw fastening
Nut, presses Manual hydraulic jack jacking upper steel plate, after fall Manual hydraulic jack again, be repeated several times by, then at crescent moon steel
Discharge tensioning equipment on plate, again press Manual hydraulic jack, rise, fall, check whether and disclosure satisfy that jacking requirement, close
After lattice, the upper steel plate of jacking is dismantled standby；
Job platform is set up, and utilizes original box beam support bowl button support used to carry out job platform and sets up, set up operation horizontal
Platform height to match with chassis hoisting depth, and leaves enough personnel's working spaces, operation horizontal according to construction part
The bearing capacity of platform meets construction loads requirement, and surfacing, it is simple to chassis moves, and protects in the setting of job platform periphery
Hurdle；
On job platform, chassis assembles in place, is placed on construction operation platform by lower steel plate, lower steel plate universal wheel and operation
Contact with platform face must assure that smooth-going, facilitates subsequent movement adjusting position；
Upper steel plate steel thimble is directly installed on lower steel plate screw, after installation, adjustable screw leading screw, it is ensured that on
Steel plate level, uses horizon rule to check；
Tensioning equipment is installed, and is manually lifted by tensioning equipment and installs at upper steel plate crescent moon steel plate, makes tensioning equipment and crescent moon steel plate
Radian closely connected, it is ensured that tensioning equipment is installed firm；
Jacking chassis, tensioning equipment is in place, loosens leading screw and fixes nut, uses Manual hydraulic jack top upper steel plate, according to
The position of stretch-draw work anchorage and steel strand wires steel bundle determines hoisting depth, fastens leading screw and fixes nut, then profit after highly determining
Moving integrally chassis with universal wheel, make the tensioning equipment on chassis concentric with steel strand wires, universal wheel is fixed after determining in position, it is ensured that
The stability of stretching process；
Tensioning construction, carries out stretch-draw operation after tensioning equipment is in place, stretch-draw operation is wanted in strict accordance with design and specification
Ask and construct, observe the position of tensioning equipment and chassis simultaneously, occur that skew adjusts in time；
Declining chassis, removed by tensioning equipment, stretch-draw operation uses Manual hydraulic jack by upper steel plate jack-up after completing, and puts
Nut fixed by loose wire thick stick, leading screw is fixed nut and screws off and be placed on above lower steel plate, declines Manual hydraulic jack and makes upper steel plate
Decline, drop to initial position.
The invention have the advantages that
1, large-sized prestress tensioning equipment is installed to high and narrow construction area by self-control jacking chassis by this engineering method, carries out whole
Body stretch-draw operation, makes whole bundle steel strand wires synchronous tension, it is ensured that consistent with bundle steel strand wires stretch value, it is ensured that pre-stress construction matter
Amount.
2, stretch-draw main equipment is installed to specify region integral tension by this engineering method, uses small-sized thousand compared to traditional method
Jin top single tendon stretch improves efficiency of construction, saves duration and artificial, machine cost.
3, large-scale tensioning equipment can be fixedly secured, stablize lifting, safety height by this engineering method self-control chassis, it is ensured that set
Standby and personal security.
4, this engineering method uses steel plate, sleeve, helical screw, Manual hydraulic jack etc. to be assembled into jacking chassis, and structure is skilful
Wonderful, easy accessibility, can manually be transported to chassis accessory on stretch-draw platform assemble, it is simple to be not suitable for the narrow area of crane lifting
Stretching construction.
Accompanying drawing explanation
Fig. 1 is the trolley structure schematic diagram of the present invention.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the Construction Principle figure of the present invention.
Detailed description of the invention
A kind of prestressing force draws high narrow region aids construction stretching chassis, including upper steel plate 5, lower steel plate 1, crescent moon steel plate 6,
Screw 2, leading screw fix nut 3, steel thimble 4 and universal wheel 7(see Fig. 1,2).Described screw 2 is four, all revolves
Being screwed with leading screw and fix nut 3, described four screws 2 are welded on lower steel plate 1 by setting position.Above described upper steel plate 5
Both sides are respectively welded crescent moon steel plate 6, and four screw opposite positions at upper steel plate 5 with lower steel plate are welded with four steel
Sleeve pipe 4.Four steel thimbles 4 of upper steel plate are sleeved on four screws 2 of lower steel plate, when upper steel plate 5 ascending, descending, screw
Leading screw is fixed nut 3 and is fixed on steel thimble 4 bottom, makes upper steel plate 5 ascending, descending to specifying position.Described universal wheel 7 is four, four
Individual universal wheel 7 is fixed on below lower steel plate 1 by setting position, constitutes prestressing force and draws high narrow region aids construction stretching chassis.
Prestressing force draws high the construction method of narrow region aids construction stretching chassis, shown in Fig. 3, including following method:
Nut 3 fixed by leading screw on fastening screw 2, is placed on lower steel plate 1 by Manual hydraulic jack 8, decontrols leading screw
Clamp nut 3, after pressing Manual hydraulic jack 8 jacking upper steel plate 5, then falls Manual hydraulic jack, is repeated several times by, then exists
Discharge tensioning equipment 9 on crescent moon steel plate 6, again press Manual hydraulic jack, rise, fall, check whether and disclosure satisfy that top
Rise requirement, qualified after the upper steel plate of jacking is dismantled standby；
Job platform is set up, and utilizes original box beam support bowl button support used to carry out job platform and sets up, set up operation horizontal
Platform height to match with chassis hoisting depth, and leaves enough personnel's working spaces, operation horizontal according to construction part
The bearing capacity of platform meets construction loads requirement, and surfacing, it is simple to chassis moves, and protects in the setting of job platform periphery
Hurdle；
On job platform, chassis assembles in place, is placed on construction operation platform by lower steel plate 1, lower steel plate universal wheel 7 and work
Industry contact with platform face must assure that smooth-going, facilitates subsequent movement adjusting position；
Upper steel plate steel thimble 4 is directly installed on lower steel plate screw 2, after installation, suitable adjustable screw leading screw,
To ensure upper steel plate 5 level, horizon rule can be used if desired to check；
Tensioning equipment is installed, and is manually lifted by tensioning equipment 9 and installs at upper steel plate crescent moon steel plate 6, makes tensioning equipment and crescent moon steel
The radian of plate is closely connected, it is ensured that tensioning equipment is installed firm；
Jacking chassis, tensioning equipment 9 is in place, loosens leading screw and fixes nut, uses Manual hydraulic jack 8 to push up upper steel plate 5, root
Determine hoisting depth according to the position of stretch-draw work anchorage and steel strand wires steel bundle, fasten leading screw after highly determining and fix nut 3, then
Utilizing universal wheel 7 to move integrally chassis, make the tensioning equipment 9 on chassis concentric with steel strand wires, universal wheel is fixed after determining in position,
Guarantee the stability of stretching process；
Tensioning construction, carries out stretch-draw operation after tensioning equipment is in place, stretch-draw operation is wanted in strict accordance with design and specification
Ask and construct, observe the position of tensioning equipment and chassis simultaneously, occur that skew adjusts in time；
Decline chassis, tensioning equipment 9 is removed, stretch-draw operation complete after use Manual hydraulic jack by upper steel plate jack-up,
Loosen leading screw and fix nut, leading screw is fixed nut and screws off and be placed on above lower steel plate, decline Manual hydraulic jack and make steel
Plate declines, and drops to initial position.
Claims (2)
1. prestressing force draws high a narrow region aids construction stretching chassis, including upper steel plate (5), lower steel plate (1), crescent moon steel plate
(6), screw (2), leading screw fix nut (3), steel thimble (4) and universal wheel (7), it is characterised in that described screw
(2) being four, all screwed leading screw and fixed nut (3), described four screws (2) are welded on lower steel plate by setting position
(1) on, upper steel plate (5) both sides above are respectively welded crescent moon steel plate (6), at four spirals of upper steel plate (5) Yu lower steel plate (1)
Leading screw (2) opposite position is welded with four steel thimbles (4), and four steel thimbles (4) of upper steel plate are sleeved on four of lower steel plate
On screw (2), when upper steel plate (5) ascending, descending, screw leading screw and fix nut (3) and be fixed on steel thimble (4) bottom, make
Steel plate (5) ascending, descending is to specifying position, and described universal wheel (7) is four, and four universal wheels (7) are fixed on lower steel by setting position
Plate (1) below, constitutes prestressing force and draws high narrow region aids construction stretching chassis.
2. prestressing force draws high the construction method of narrow region aids construction stretching chassis, it is characterised in that include following method:
Nut (3) fixed by leading screw in fastening screw (2), is placed on lower steel plate (1) by Manual hydraulic jack (8), puts
Drive leading screw clamp nut (3), after pressing Manual hydraulic jack (8) jacking upper steel plate (5), then fall Manual hydraulic jack
(8), it is repeated several times by, then on crescent moon steel plate (6), discharges tensioning equipment (9), again press Manual hydraulic jack (8), rise,
Fall, check whether and disclosure satisfy that jacking requirement, qualified after the upper steel plate (5) of jacking is dismantled standby；
Job platform is set up, and utilizes original box beam support bowl button support used to carry out job platform and sets up, set up job platform
Height to match with chassis hoisting depth, and leaves enough personnel's working spaces, job platform according to construction part
Bearing capacity meet construction loads requirement, and surfacing, it is simple to chassis moves, and arranges guardrail at job platform periphery；
On job platform chassis assemble in place, lower steel plate (1) is placed on construction operation platform, lower steel plate universal wheel (7) with
Job platform contact surface must assure that smooth-going, facilitates subsequent movement adjusting position；
Upper steel plate steel thimble (4) is directly installed on lower steel plate screw (2), after installation, adjustable screw leading screw,
Ensure upper steel plate (5) level, use horizon rule to check；
Tensioning equipment is installed, and is manually lifted by tensioning equipment (9) and installs to upper steel plate crescent moon steel plate (6) place, makes tensioning equipment and crescent moon
The radian of steel plate is closely connected, it is ensured that tensioning equipment is installed firm；
Jacking chassis, tensioning equipment (9) is in place, loosens leading screw and fixes nut, uses Manual hydraulic jack (8) top upper steel plate
(5), determine hoisting depth according to the position of stretch-draw work anchorage and steel strand wires steel bundle, fasten leading screw after highly determining and fix nut
(3), then utilizing universal wheel (7) to move integrally chassis, make the tensioning equipment on chassis concentric with steel strand wires, position is solid after determining
Determine universal wheel, it is ensured that the stability of stretching process；
Tensioning construction, carries out stretch-draw operation after tensioning equipment (9) is in place, stretch-draw operation is in strict accordance with design and specification
Requirement is constructed, and observes the position of tensioning equipment and chassis simultaneously, occurs that skew adjusts in time；
Decline chassis, by tensioning equipment (9) remove, stretch-draw operation complete after use Manual hydraulic jack by upper steel plate jack-up,
Loosen leading screw and fix nut, leading screw is fixed nut and screws off and be placed on above lower steel plate, decline Manual hydraulic jack and make steel
Plate declines, and drops to initial position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610741352.1A CN106223204A (en) | 2016-08-29 | 2016-08-29 | A kind of prestressing force draws high narrow region aids construction stretching chassis and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610741352.1A CN106223204A (en) | 2016-08-29 | 2016-08-29 | A kind of prestressing force draws high narrow region aids construction stretching chassis and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106223204A true CN106223204A (en) | 2016-12-14 |
Family
ID=57554951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610741352.1A Pending CN106223204A (en) | 2016-08-29 | 2016-08-29 | A kind of prestressing force draws high narrow region aids construction stretching chassis and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106223204A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107254847A (en) * | 2017-06-15 | 2017-10-17 | 上海颖川路桥科技有限公司 | A kind of city rotary interchange synchronization of jacking up steel support structure |
| CN107401123A (en) * | 2017-08-11 | 2017-11-28 | 中铁六局集团有限公司 | Portable prestressed stretch-draw servicing unit |
| CN111675133A (en) * | 2020-07-07 | 2020-09-18 | 中国能源建设集团山西电力建设有限公司 | Pipeline lifting and pulling moving device and method in narrow space |
| CN112267687A (en) * | 2020-10-16 | 2021-01-26 | 五冶集团上海有限公司 | Manufacturing method of movable prestress tensioning and shoring combined device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002004225A (en) * | 2000-06-22 | 2002-01-09 | Ps Corp | Method and device for stretching erecting pc bridge |
| CN101748681A (en) * | 2009-12-22 | 2010-06-23 | 浙江省大成建设集团有限公司 | Pretensioning method construction technology of 50m broken line reinforced concrete T-shaped beam |
| CN202047576U (en) * | 2011-03-21 | 2011-11-23 | 江西理工大学 | Novel scaffold |
| CN204728218U (en) * | 2015-06-17 | 2015-10-28 | 中铁二十一局集团第一工程有限公司 | Bridge beam body base plate exposes steel strand tension jack supporting device |
| CN204876508U (en) * | 2015-07-15 | 2015-12-16 | 徐伟明 | Portable height -adjustable scaffold |
| CN206015533U (en) * | 2016-08-29 | 2017-03-15 | 沈阳市政集团有限公司 | A kind of prestressing force draws high narrow region aids construction stretching chassis |
-
2016
- 2016-08-29 CN CN201610741352.1A patent/CN106223204A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002004225A (en) * | 2000-06-22 | 2002-01-09 | Ps Corp | Method and device for stretching erecting pc bridge |
| CN101748681A (en) * | 2009-12-22 | 2010-06-23 | 浙江省大成建设集团有限公司 | Pretensioning method construction technology of 50m broken line reinforced concrete T-shaped beam |
| CN202047576U (en) * | 2011-03-21 | 2011-11-23 | 江西理工大学 | Novel scaffold |
| CN204728218U (en) * | 2015-06-17 | 2015-10-28 | 中铁二十一局集团第一工程有限公司 | Bridge beam body base plate exposes steel strand tension jack supporting device |
| CN204876508U (en) * | 2015-07-15 | 2015-12-16 | 徐伟明 | Portable height -adjustable scaffold |
| CN206015533U (en) * | 2016-08-29 | 2017-03-15 | 沈阳市政集团有限公司 | A kind of prestressing force draws high narrow region aids construction stretching chassis |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107254847A (en) * | 2017-06-15 | 2017-10-17 | 上海颖川路桥科技有限公司 | A kind of city rotary interchange synchronization of jacking up steel support structure |
| CN107401123A (en) * | 2017-08-11 | 2017-11-28 | 中铁六局集团有限公司 | Portable prestressed stretch-draw servicing unit |
| CN111675133A (en) * | 2020-07-07 | 2020-09-18 | 中国能源建设集团山西电力建设有限公司 | Pipeline lifting and pulling moving device and method in narrow space |
| CN112267687A (en) * | 2020-10-16 | 2021-01-26 | 五冶集团上海有限公司 | Manufacturing method of movable prestress tensioning and shoring combined device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106223204A (en) | A kind of prestressing force draws high narrow region aids construction stretching chassis and construction method | |
| CN206229944U (en) | A kind of power equipment maintaining cable shear | |
| CN205677222U (en) | A kind of civil engineering work construction bracket | |
| CN205531388U (en) | A unloading device for steel structural support | |
| CN205347999U (en) | Bridge construction bracket constructional device | |
| CN106812069A (en) | The bottom of mountain area buttress Hanging Basket high stops puts device and method | |
| CN103352437A (en) | Quick beam lowering method based on bridge synchronous jacking and overall replacement | |
| CN206015533U (en) | A kind of prestressing force draws high narrow region aids construction stretching chassis | |
| CN207077223U (en) | A kind of balance weight milling flat fixed platform device | |
| CN104695717A (en) | Upwarp degree precontrol adjusting equipment of revolving platform | |
| CN202323780U (en) | Bottom die suspending device of midspan closure section | |
| CN102174836A (en) | Framework column bending hysteresis test specimen with reusable stiffening bar sections | |
| CN106735524B (en) | A kind of electric pole is listed quickly to remove specific purpose tool | |
| CN105088967A (en) | Program-controlled automatic lifting mechanism for bottom basket of hanging basket | |
| CN202017503U (en) | Automatic pin puller for hydraulic support | |
| CN105712248A (en) | Hand lifting mechanism | |
| CN208103726U (en) | Build lifting handgrip | |
| CN107237515A (en) | The support meanss and its application method of circular steel truss structure | |
| CN203145492U (en) | Support head for removing template early | |
| CN207087765U (en) | The main stuffing-box of high-pressure plunger pump and secondary stuffing-box extracting tool | |
| CN201848680U (en) | Device for disassembling cross girder body and middle frame body of rough crusher | |
| CN202704411U (en) | Vertical vibrating hoist of waste cigarette | |
| CN204867531U (en) | Folding flexible drilling equipment of assembled | |
| CN201713281U (en) | Pressure container inlet dismounting device | |
| CN206457725U (en) | It is a kind of to be used for the overall device transferred and remove dragging suspension basket |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161214 |
|
| RJ01 | Rejection of invention patent application after publication |