CN108330807A - Arc box beam template forming method - Google Patents
Arc box beam template forming method Download PDFInfo
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- CN108330807A CN108330807A CN201810107841.0A CN201810107841A CN108330807A CN 108330807 A CN108330807 A CN 108330807A CN 201810107841 A CN201810107841 A CN 201810107841A CN 108330807 A CN108330807 A CN 108330807A
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention discloses arc box beam template forming methods, include the following steps：1) surveying and locating：Determine coordinate, live setting-out on the spot, 2) mould material is than choosing：Mould material including glass steel formwork, set shaped steel formwork, film plate+stainless steel double shuttering, bridge aerated core, aluminum alloy mould plate, double-wall corrugated pipe, plastic formwork is than choosing, 3) mould material is selected：Selected including box beam external mold and box girder inner formwork mould material, in conjunction with the characteristics of arc box beam, box beam external mold uses film plate+stainless steel double shuttering, box girder inner formwork use double-wall corrugated pipe, 4) bed die be laid with, 5) side form installation, 6) internal model is installed, and 7) reinforcing of side mould.Speed of application of the present invention is fast, significantly improves arc box beam overall appearance quality and geometric accuracy, while having ensured construction safety, has saved construction cost.
Description
Technical field
The present invention relates to a kind of arc box beam template more particularly to arc box beam template forming methods.
Background technology
With advances in technology, traditional concrete box girder construction has been applied to Longspan Bridge engineering, subway station vehicle
It stands engineering, single layer and multi storied industrial factory building column, high level and high-rise building engineering etc..Its construction method be also it is with rapid changepl. never-ending changes and improvements, such as
Integral Steel template construction, rigid backbone assembled plank sheathing, rubber internal model etc., but occur some in actual application
Problem：
1, steel form cost itself is higher, for special-shaped box beam, can not reuse, and when design drawing part exists
When conflicting with each other, scene adjustment is difficult.
2, pouring in concrete box girder belongs to concealed work, the pouring quality of concrete can not macroscopic examination, work as use
When manually pouring and vibrate, it can only ensure construction quality in sense of responsibility and strict construction and management by operating personnel,
Simultaneously check it is cumbersome, it is time-consuming.
When 3, there is the special-shaped box beam of variation for box beam height and width, while there was only 1m at box beam height minimum,
When local clear height only has 60cm, manually removes internal model and conveniently cannot achieve.
4, rigid backbone assembled plank sheathing and combined steel internal model widely used in construction at present, when mounted, one
As need 10h or so, it is time-consuming.
5, rigid backbone assembled plank sheathing and combined steel internal model be during form removal, need personnel enter in box beam into
Row is removed, and is expended time 5h or so, and need internally to dry in the process, is prevented personnel's anoxia asphyxia in box beam.Therefore
Its form removal expends the time and cost increases.
6, the geometry of common rubber internal model is molded by rubber mandrel, and shape is not easy to control, the geometric form with design
Shape difference is larger.
7, rubber internal model needs special messenger to keep an eye in concreting process, pays attention to that air pressure is replenished in time, prevents rubber bag tank
Interior air pressure declines, and influences box beam concrete roof thickness, labor intensive.
8, rubber internal model striking time is not easy to control, to avoid concrete roof from caving in, it is easy to when artificial postponement form removal
Between, occur internal model with concrete binding together the phenomenon that, the general number that recycles is less, and external capsule is easy to wear, if
Abrasion, just will produce bulging to influence concrete formation.
Invention content
In view of the deficiencies of the prior art, the present invention intends to provide a kind of safe and reliable, practical, construction
The arc box beam template forming method that speed is fast, Mass accuracy is high.
To achieve the above object, the present invention can be achieved by the following technical programs：
Arc box beam template forming method, includes the following steps：
1) surveying and locating：Before box girder construction, determine that arc box beam key controls pile No. in advance, then flat by arc box beam
Face figure axis circular curve determines coordinate of mid-peg, and bottom plate, the seat of the stake of the top plate left side and the right stake are calculated according further to sectional view
Mark, finally carries out setting-out on the spot at the scene, and respectively increase by one is carried out across the span of longitudinal horizontal rod with lime on both sides on the outside of top plate
Label；
2) mould material is than choosing：Mould material includes glass steel formwork, set shaped steel formwork, film plate+stainless steel double molding
Plate, bridge aerated core, aluminum alloy mould plate, double-wall corrugated pipe, plastic formwork；
3) mould material is selected：It is selected including box beam external mold and box girder inner formwork mould material, in conjunction with the characteristics of arc box beam,
Box beam external mold uses film plate+stainless steel double shuttering, box girder inner formwork to use double-wall corrugated pipe；
4) bed die is laid with：Bed die plate material homonymy mould is all made of film plate, along box beam bottom plate boundary one batten of tailor's tack,
Line style is consistent with box beam bottom plate both sides, carries out plane setting-out to bed die, measures bottom plate vertically and horizontally absolute altitude, according to measurement result the bottom of by
Template is adjusted to designed elevation, detects absolute altitude again；
5) side form is installed：On already installed bed die, side template installation is carried out；A lumps of wood is followed closely at template back, often
The lumps of wood for reinforcing support is arranged in constant spacing, withstands the lumps of wood at side template back on one side, is close to Template nail in joint
It connects, other end is then followed closely on the lumps of wood being connect with shore frame；
6) internal model is installed：It is circular hollow structure inside box beam, it, highly can be with angle in order to reach arc effect
Box beam is integrally adjusted, using the extendable double-wall corrugated pipe in part；
7) side mould is reinforced：Screw arbor with nut at both-ends is being worn apart from the position of the high 25-30cm in box beam bottom, apart from top 25-30cm
It sets and wears Screw arbor with nut at both-ends.
Further, film plate+stainless steel double shuttering in step 2) is a kind of self-control gang form.
Further, film plate+stainless steel double shuttering in step 3), can be used in turn using composite shuttering.
Further, the double-wall corrugated pipe surface in step 3) is to be more conducive to install with ripple to manage, and is had simultaneously
Certain ductility can be bent according to arc.
Further, hemline of the end template beyond both sides side form is more than 20cm in step 4), while at the bottom completed
Anti-skidding batten is followed closely on mould, batten size length × width x thickness is the plank of 50cm × 20cm × 2cm, and spacing 25-35cm is used for the later stage
Side mould installation.
Further, step 5) side template uses 18mm thickness film plates, side template back to follow closely a 2m long, 10cm × 10cm's
The lumps of wood for reinforcing support is arranged per 60cm by the lumps of wood, spacing 15cm mono-.
Further, step 5) box beam top circular arc needs first to follow closely plank on top, highly exceeds design structure height
10-15cm, then the radius that design drawing needs is followed closely out with 2mm Stainless Molding Boards in circular arc.
Further, step 6) is to ensure the mounting height of bellows, and the not deviation in later stage casting concrete is moved
It is dynamic, it is fixed using reinforcing bar, fixed steel bars need to effectively be welded with bottom main reinforcement.
Further, the reinforcing bar and homonymy spiral shell for larger section of radian using φ 14 after Screw arbor with nut at both-ends have been worn in step 7) both sides
Bar be connected it is integral reinforced, radian is connect using steel pipe with screw rod compared with segment, box beam is reinforced, at the same in order to
Reinforce template overall stability, increases per 3m and support together.
Advantageous effect of the present invention：The present invention is designed and implements for arc box beam template system.In template selection side
Face：Domestic common template material is compared, from template density；Template is equipped with situation；Turnover rate；Processing, installation quality and difficulty
Easy degree；Mechanical property, installation personnel requirement；Concrete formation quality；It is compared and analyzed in terms of cost, determines film plate
+ stainless steel double shuttering is best suited for arc box beam external mold, and double-wall corrugated pipe is most suitable for box girder inner formwork.In reinforcement system design side
Face establishes arc box beam BIM models using rhinoceros (Rhino) software, scene is instructed to carry out template piecemeal, makes, positioning and peace
Dress.Outboard template is reinforced using purlin system, is attached for Screw arbor with nut at both-ends between template, and piece is close, and it is firm to reinforce, after guarantee
The safety of phase concreting；Internal model is fixed using reinforcing bar, and skeleton is formed with box beam bottom layer of the reinforcing steel, avoids internal model floating and position
Offset.This series of measures significantly improves arc box beam overall appearance quality and geometric accuracy, while having ensured construction peace
Entirely, construction cost has been saved.
Description of the drawings
Fig. 1 is arc box beam template forming method schematic diagram of the present invention；
Fig. 2 be the present invention become deck-molding, etc. deck-sidings, Variable-curvature-box Girder BIM models；
Fig. 3 is formwork reinforcement design drawing of the present invention；
Fig. 4 is arc box beam reinforcing bar diagrammatic cross-section of the present invention.
Wherein：1- reinforces the lumps of wood, and 2- reinforces steel pipe/reinforcing bar, and 3- line type control battens, 4- cheek boards, 5- is to wearing screw rod, 6-
Slope variation, 7- design axis, 8- reinforcing bars, 9- reinforcing bars.
Specific implementation mode
Below in conjunction with attached drawing and specific implementation mode, the present invention is described further：
Such as Fig. 1, arc box beam template forming method of the present invention includes the following steps：
1, surveying and locating：Before box girder construction, determine that arc box beam key controls pile No. in advance, then flat by arc box beam
Face figure axis circular curve determines coordinate of mid-peg, and bottom plate, the seat of the stake of the top plate left side and the right stake are calculated according further to sectional view
Mark.Finally carry out setting-out on the spot at the scene, on the outside of top plate both sides respectively increase by one across longitudinal horizontal rod span, through calculating,
Arc box beam longitudinal horizontal rod one is 600mm across span.It is further added by the walkways setting-out 800mm wide.Markings are sprinkled with lime,
The center line that box beam is made further according to projection line, is equally marked with lime.
2, mould material is than choosing：Selection for arc box beam mould material, box beam in the bridge of Primary Reference domestic city
Main mould material when construction.Including glass steel formwork, set shaped steel formwork, film plate+stainless steel double shuttering, bridge inflation
Core model, aluminum alloy mould plate, double-wall corrugated pipe, plastic formwork etc..The characteristics of for arc box beam, respectively from template density；Template
It is equipped with situation；Turnover rate；Processing, installation quality and complexity；Mechanical property, installation personnel requirement；Concrete formation quality；
It is compared and analyzed successively in terms of Cost comparisons.
(1) glass steel formwork：Density 3.55-4.0kg/ ㎡；Turnover rate：Different level, different cross section need to be equipped with,
Opposite turnover rate is high；Complexity is installed：Because processing technology limitation quality is relatively low, processing is easier to, and installs required personnel
It is more；Mechanical property：Tensile strength >=200Mpa；Hardness Barcol >=48；To operating personnel：It is high；Concrete formation quality：Local column
Cross sectional shape is yielding, and faulting of slab ends, husky line easily occurs in edge joint position；Cost comparisons：Mei ㎡ costs are higher, composite cost
It is relatively high.
(2) set shaped steel formwork：Density 7.85g/cm3；Turnover rate：For special-shape arc box beam, prefabricated steel-template need to be distinguished,
Only equal height and positions are generally applicable, and turnover rate is low；Complexity is installed：Processing quality is higher, and difficulty is big, and personnel are few needed for installation,
Need mechanical-assisted；Mechanical property：Tensile strength >=235MPa；To operating personnel：It is higher；Concrete formation quality：Template itself
Be afraid of acid, fearnesss afraid of water humidity, perishable rust, it is smooth to pour rear concrete surface, but uneven color easily occurs；Cost comparisons：Template is pacified
It is few to fill process, but mechanical-assisted , Mei ㎡ costs need to be used high.
(3) bridge aerated core：Density：Rubber thickness 0.1m, air bag are 1.2-1.6kN/ ㎡；Turnover rate：It is only capable of conduct
Internal model, same inner diameter is generally applicable, and core model turnover rate is higher；Complexity is installed：Materials processing limitation is few, and installation procedure is more, institute
Need personnel more, curved section cracky；Mechanical property：Bilateral vulcanization adhesive plaster breaking strength (N/25mm)：Radial ＞ 1000, broadwise
More than 800；Glue and cloth adhesion strength (N/25mm)：More than 15；To operating personnel：It is high；Concrete formation quality：Striking time is not
It is easy to control, too early easy collapse hole, form removal difficulty rapid wear core model too late.It requires height, core model easily to float worker when vibrating, leads to coagulation
There is deviation in native size；Cost comparisons：Core model installation procedure is more, requires high , Mei ㎡ costs higher worker.
(4) aluminum alloy mould plate：Density：2.8g/cm3；Turnover rate：Flatness, verticality are good, high as external mold turnover rate；
Complexity is installed：Materials processing limitation is more, and quality is high, and height is required to worker, and template is from heavy and light；Mechanical property：Tensile strength
95-125Mpa；It forms integral mold plate system bearing capacity and reaches 50kN/ ㎡；To operating personnel：It is high；Concrete formation quality：Tear coagulation open
Native forming quality preferably controls, and is applicable in external mold, internal model installation is fixed and removes not easy to operate；Cost comparisons：Material cost is higher,
, can not be general due to being abnormal formwork, overall cost is high.
(5) double-wall corrugated pipe：Density：DN600-12.5kg/m；Turnover rate：It being only capable of as internal model, same inner diameter is generally applicable,
Core model turnover rate is higher；Complexity is installed：Outer wall wave structure in a ring, greatly strengthens the ring stiffness of tubing, to
Enhance its resistance to concrete load；Mechanical property：Tensile break strength 37-39MPa；Tensile yield strength MPa25.8-
26.8；Ring stiffness ring stiffness >=8kN/m2；To operating personnel：It is higher；Concrete formation quality：Template band groove itself, it is fixed
Convenient, lighter weight, built-in template itself increases the less concrete size of additional load and quality easily ensures；Cost comparisons：Material
Material cost itself is relatively low, while simple installation, and quality easily ensures that overall cost is low.
(6) plastic formwork：Density：1.55-1.80g/cm3；Turnover rate：Only turnover rate plane mould >=30, column beam form >=40；
Complexity is installed：Technological adaptability is strong, can saw, digs, bores, follow closely, and can arbitrarily form any geometry；Mechanical property：Table
Surface hardness (shore) >=58；Bending strength >=45；To operating personnel：It is high；Concrete formation quality：If as internal model, surface mistake
In smooth, it is not fixed easily, concrete size is not easy to ensure；Cost comparisons：Material cost is high, and internal model installation is fixed difficult, comprehensive
It is of high cost.
(7) film plate+stainless steel double shuttering：Density 0.9g/cm3；Turnover rate：It need to be to different level, different cross section point
It is not equipped with, template not warpage, surface is smooth, does not crack, and water resistance is good, and boiling is not come unglued for 24 hours, and turnover rate is high；Peace
Fill complexity：Drawing materials, processing limitation is few, and quality is high, and personnel are more needed for installation, without machinery；Mechanical property：Static bending strength
Rift grain direction 44.3MPa, band direction 50.9MPa；To operating personnel：It is low；Concrete formation quality：Demoulding is easy, concrete
Apparent mass mores easily guarantee；Cost comparisons：The demoulding time used is steel form 1/7, and installation procedure is more, but without mechanical-assisted,
Mei ㎡ costs are low.
3, mould material is than choosing：
(1) it is directed to arc box beam side form, mainly can be from glass steel formwork, set shaped steel formwork, film plate+stainless steel is compound
Template, aluminum alloy mould plate, plastic formwork these types are compared.For set shaped steel formwork since its dead weight is larger, when assembling and disassembling, is equal
Mechanical-assisted is needed, while being directed to arc box beam, generally applicable segment is less, and cost is higher, does not use.It is existing for glass steel formwork
Stage is more for circular-sectioned pier and power pipe, and since it is polymerized for glass fibre, tensile resistance is strong, and side form is whole
Difficulty is reinforced, height is required to worker, material cost itself is higher, does not use.Aluminum alloy mould plate and plastic formwork all have corrosion resistant,
Anti-corrosion, from heavy and light the advantages of, but be required to carry out factory it is customized, for arc box beam use after, turnover rate is low, while to scene
Installation exercise personnel requirement is high, and material itself is of high cost, does not use.Film plate+stainless steel double shuttering has taken into account the film simultaneously
Plate convenient material drawing, properties are excellent, at low cost, low to on-site personnel requirement, and Stainless Molding Board is easy to process, can model
Good advantage is combined, while being directed to arc box beam feature itself, can be used in turn using composite shuttering, determines to use.
(2) it is directed to box girder inner formwork, each class template can be used as box girder inner formwork, but the characteristics of combination arc box beam, height
It is smaller, personnel's operating difficulties, therefore set shaped steel formwork, aluminum alloy mould plate, the film plate+stainless steel double shuttering are not applicable, it is contemplated that
The general surface of glass steel formwork, plastic formwork is smooth, and difficulty is fixed when as internal model, therefore is not used.It is main for aerated core
In view of it is in radian angular position cracky, installation procedure is complicated, and when concreting easily floats so that concrete size is not
It meets the requirements, when form removal requires the features such as high to worker, therefore does not use.For double-wall corrugated pipe, convenient material drawing, due to its appearance
Face itself has ripple and is more conducive to install fixation, while material itself has certain ductility, can be according to arc box beam radian
It is bent, relatively low to in-site installation personnel requirement, overall cost is low, therefore uses.
4, bed die plate material homonymy mould is all made of film plate, and end template is more than 20cm beyond both sides side template hemline,
Anti-skidding batten is followed closely on the bed die completed, batten size length × width x thickness is the plank of 50cm × 20cm × 2cm thickness, spacing 25-
35cm is installed for later stage side mould.Along box beam bottom plate boundary one wide 10cm of tailor's tack, the batten of thick 18mm, line style and box beam
Bottom plate both sides are consistent.Plane setting-out is carried out to bed die, bottom plate vertically and horizontally absolute altitude is measured, is adjusted to end template according to measurement result
Designed elevation detects absolute altitude again.
5, on already installed bed die, side template installation is carried out.Side template uses 18mm thickness film plates.Template back
Follow closely the lumps of wood of a 2m long 10cm × 10cm, spacing 15cm mono-.One lumps of wood for reinforcing support is set per 60cm, is withstood on one side
The lumps of wood at side template back, is close to Template nail in joint and is connect, and other end is then followed closely on the lumps of wood being connect with shore frame.For
Arc box beam top circular arc highly exceeds design structure height 10-15cm, then in circular arc 2mm first in top nailing template
Stainless Molding Board follows closely out the radius of design drawing needs, width 10cm.
6, it is circular hollow structure inside box beam, it, highly can be with box beam entirety with angle in order to reach arc effect
It is adjusted, using the extendable double-wall corrugated pipe in part.In order to ensure the mounting height of bellows, in later stage casting concrete
When not deviation, it is mobile, it is fixed using the reinforcing bar of 16 diameters of φ, spacing 80cm.Fixed steel bars need to have with bottom main reinforcement
Effect welding.One circle screw-thread steel can be installed simultaneously along bellows, diameter 10mm ensures itself and other steel such as No. 8 reinforcing bars in Fig. 4
Muscle effectively connects.Increase longitudinal reinforcement on the outside of spiral bar, such as No. 9 reinforcing bars in Fig. 4.
7, Screw arbor with nut at both-ends is being worn apart from the position of the high 25-30cm in box beam bottom, is being worn apart from the top positions 25-30cm to drawing spiral shell
Bar.Both sides are connected integral add for the reinforcing bar of larger section of use φ 14 of radian with homonymy screw rod after having worn Screw arbor with nut at both-ends
Box beam is reinforced Gu being connect with screw rod using steel pipe compared with segment for radian.Simultaneously in order to reinforce template overall stability,
Increase per 3m and supports together.
For those skilled in the art, it is various corresponding that other can be made according to above technical scheme and design
Change and deformation, and all these change and distortions should all belong within the protection domain of the claims in the present invention.
Claims (9)
1. arc box beam template forming method, includes the following steps：
1) surveying and locating：Before box girder construction, determine that arc box beam key controls pile No. in advance, then pass through arc box beam plan view
Axis circular curve determines coordinate of mid-peg, and bottom plate is calculated according further to sectional view, the coordinate of the stake of the top plate left side and the right stake, most
Carry out setting-out on the spot at the scene afterwards, respectively increase by one is marked across the span of longitudinal horizontal rod with lime on both sides on the outside of top plate；
2) mould material is than choosing：Mould material includes glass steel formwork, set shaped steel formwork, film plate+stainless steel double shuttering, bridge
Beam aerated core, aluminum alloy mould plate, double-wall corrugated pipe, plastic formwork；
3) mould material is selected：It is selected including box beam external mold and box girder inner formwork mould material, in conjunction with the characteristics of arc box beam, box beam
External mold uses film plate+stainless steel double shuttering, box girder inner formwork to use double-wall corrugated pipe；
4) bed die is laid with：Bed die plate material homonymy mould is all made of film plate, along box beam bottom plate boundary one batten of tailor's tack, line style
It is consistent with box beam bottom plate both sides, plane setting-out is carried out to bed die, measures bottom plate vertically and horizontally absolute altitude, according to measurement result by end template
It is adjusted to designed elevation, detects absolute altitude again；
5) side form is installed：On already installed bed die, side template installation is carried out；A lumps of wood is followed closely at template back, is often fixed
The lumps of wood for reinforcing support is arranged in spacing, withstands the lumps of wood at side template back on one side, is close to and is connect with Template nail in joint, separately
One is then followed closely on the lumps of wood being connect with shore frame；
6) internal model is installed：It highly can be with box beam with angle in order to reach arc effect for circular hollow structure inside box beam
Entirety is adjusted, using the extendable double-wall corrugated pipe in part；
7) side mould is reinforced：Screw arbor with nut at both-ends is being worn apart from the position of the high 25-30cm in box beam bottom, is being worn apart from the top positions 25-30cm
Screw arbor with nut at both-ends.
2. arc box beam template forming method according to claim 1, it is characterised in that：Film plate in step 2)+no
The steel composite shuttering that becomes rusty is a kind of self-control gang form.
3. arc box beam template forming method according to claim 1, it is characterised in that：Film plate in step 3)+no
Become rusty steel composite shuttering, can be used in turn using composite shuttering.
4. arc box beam template forming method according to claim 1, it is characterised in that：Double-wall corrugated pipe in step 3)
Surface is to be more conducive to install with ripple to manage, while having certain ductility, can be bent according to arc.
5. arc box beam template forming method according to claim 1, it is characterised in that：End template exceeds two in step 4)
The hemline of avris mould is more than 20cm, while anti-skidding batten is followed closely on the bed die completed, and batten size length × width x thickness is
The plank of 50cm × 20cm × 2cm, spacing 25-35cm are installed for later stage side mould.
6. arc box beam template forming method according to claim 1, it is characterised in that：Step 5) side template uses 18mm
A 2m long, the lumps of wood of 10cm × 10cm are followed closely in thick film plate, side template back, and one is arranged per 60cm and adds by spacing 15cm mono-
The lumps of wood of clamped support.
7. arc box beam template forming method according to claim 5, it is characterised in that：Step 5) box beam top circular arc
Place needs first to follow closely plank on top, highly exceeds design structure height 10-15cm, then follow closely in circular arc 2mm Stainless Molding Boards
Go out the radius of design drawing needs.
8. arc box beam template forming method according to claim 1, it is characterised in that：Step 6) is in order to ensure bellows
Mounting height, the not deviation in later stage casting concrete is mobile, it is fixed using reinforcing bar, fixed steel bars need to be the bottom of with
Portion's main reinforcement is effectively welded.
9. arc box beam template forming method according to claim 1, it is characterised in that：It has worn to drawing spiral shell on step 7) both sides
Be connected with homonymy screw rod using the reinforcing bar of φ 14 for larger section of radian after bar it is integral reinforce, radian is adopted compared with segment
It is connect with screw rod with steel pipe and box beam is reinforced, while in order to reinforce template overall stability, increased per 3m and support together.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110172924A (en) * | 2019-06-17 | 2019-08-27 | 中交第三公路工程局有限公司 | Integral hydraulic box girder formwork construction method |
| CN110348142A (en) * | 2019-07-16 | 2019-10-18 | 龙元建设集团股份有限公司 | Based on the BIM method of gang form bracket technique molding curve bridge |
| CN111469252A (en) * | 2020-04-17 | 2020-07-31 | 罗智 | Double-layer inflatable membrane concrete formwork system and construction method thereof |
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| CN110172924B (en) * | 2019-06-17 | 2020-09-08 | 中交第三公路工程局有限公司 | Integral hydraulic box girder template construction method |
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| CN110348142B (en) * | 2019-07-16 | 2023-01-17 | 龙元建设集团股份有限公司 | Method for forming curve bridge based on BIM combined template support process |
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