CN103669357A - Gate-pier fair-faced concrete one-off forming construction method - Google Patents
Gate-pier fair-faced concrete one-off forming construction method Download PDFInfo
- Publication number
- CN103669357A CN103669357A CN201310707265.0A CN201310707265A CN103669357A CN 103669357 A CN103669357 A CN 103669357A CN 201310707265 A CN201310707265 A CN 201310707265A CN 103669357 A CN103669357 A CN 103669357A
- Authority
- CN
- China
- Prior art keywords
- concrete
- template
- gate pier
- steel form
- steel
- 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
Images
Abstract
The invention is suitable for gate piers, dam bodies and wall boards of hydraulic engineering buildings and other concrete engineering having high quality requirements of exposed surfaces, and provides a gate-pier fair-faced concrete one-off forming construction method. The gate-pier fair-faced concrete one-off forming construction method comprises the steps that (1) a steel formwork is designed; (2) the steel formwork is manufactured; (3) staking out in survey is conducted; (4) steel bars are manufactured and installed; (5) the steel formwork is installed and corrected; (6) concrete pouring is performed; (7) the steel formwork is removed; (8) the concrete is maintained. According to the gate-pier fair-faced concrete one-off forming construction method, a gate pier formed in a poured mode has the flat and smooth surface, soft and smooth curved surface arc and plane connection lines and straight edges and corners, the surface of the concrete has consistent color and luster, and the common quality problems of flow marks, joint dislocation and the like of concrete of conventional hydraulic engineering buildings are solved.
Description
Technical field
This engineering method is applicable to the concrete work that the gate pier, dam body, wallboard of water conservancy project structure etc. has better quality to require to exposed face.
Background technology
Along with the raising of economic development and construction technology level, people more and more pursue the harmony of Architecture and Environment and attractive in appearance, and the presentation quality of engineering is had higher requirement.Clear-water concrete claims again ornamental concrete, and start to apply in construction work the nineties in 20th century at home.Clear-water concrete due to its one-shot forming, do not pick the features such as cutter is repaired, need not be decorated, outward appearance is bright and clean, natural and unaffected, adopted more and more.
The concrete structures such as traditional water conservancy engineering gate dam are due to the particularity of its running environment, substantially do not adopt the building external decoration such as plaster, and adopt the structure surface of wooden model and conventional concreting often more coarse.
Summary of the invention
In order to improve the presentation quality of hydraulic concrete structure, the present invention utilizes Large Steel template to adopt Construction technology of fair-faced concrete to carry out pier concrete construction, build that gate pier surfacing after moulding is bright and clean, curved surface circular arc and plane rat tail soft smooth and easy, corner angle are straight, concrete surface color and luster is consistent, the common quality defects such as the common curtain of conventional water conservancy project structure concrete, seam faulting of slab ends have been eliminated, by constantly summing up in work progress and improving, formed gate pier clear-water concrete one-shot forming construction.
The present invention is achieved by the following technical solutions: a kind of gate pier clear-water concrete one-shot forming construction, and step comprises:
(1) steel form design: tentatively determine template maximum size and modulus, in conjunction with working load, formwork and formwork supports system is carried out to mechanical calculation according to structure structure form, and work out template plan for installation and construction;
(2) steel form is made: large punching block panel is thick 6mm steel plate, interior stupefied employing 6# channel-section steel, vertical and level interval is 400～500mm, inwardly stupefied and panel is welded to form plate face structure in length and breadth, concrete lateral pressure passes to vertical outer stupefied by plate face structure, outer stupefied employing Two bors d's oeuveres 14# channel-section steel, spacing is 1000～1500mm, the steel form completing is standby;
(3) measure setting-out: template should be carried out setting-out by project organization size before installing, measure gate pier center line and formwork erection and control sideline;
(4) reinforcement fabrication is installed: gate pier vertical reinforcement adopts electroslag pressure welding welding, and horizontal bar overlap joint adopts electric welding; When gate pier, build while being highly less than 6m, can adopt overlap joint, when gate pier, build height 6m when above, utilize support that positioning tie bar (support is in whole template, reinforcement installation process, is erected at steel pipe scaffold nearby) is set;
(5) steel form is installed and is proofreaied and correct: 1. by form assembly figure, template is numbered, 2. template installation should be from circular arc termination, then carry out flat formwork installation, all fix, 3. after the installation of first floor template, poling tie rod screw rod and inner support are installed in time, and poling tie rod screw rod two ends arrange nylon stopper and pvc pipe socket;
(6) concreting: 1. concrete is mixed and stirred by the match ratio of design, 2. adopt and have storehouse face to build, tumbling barrel blanking method;
(7) steel form is removed: first by form removal order, extract tie rod screw rod out, then remove steel form from top to bottom;
(8) concrete curing: after steel form is removed, remove form removal process and stick to the concrete chip of concrete surface, and corresponding processing is done in defective place.
As improvement, in step (2), after steel form completes, the rustproof paint of brushing in time except panel.
As improvement, in step (4), reinforcement installation completes the topping of colligation in time cushion block.Cushion block answers colligation firm, to prevent that cushion block from coming off, causes reinforcing bar to scratch large form paint film.
As preferably, in step (5), steel form is brushing template paint before installation, and template paint must be with hairbrush or spraying process, and the dried steel form of mopping is uprightly stacked, and adjacent steel template contact surface separates by geotextiles.Because the concrete surface after fair-faced concrete molding requires bright and clean and is sub-light, generally should not adopt aqueous release agent, in order to avoid concrete surface is polluted in steel form corrosion.The present invention adopts template paint as release agent, template paint can form the paint film that one deck is smooth at template surface, paint film can reduce coefficient of friction, the minimizing pore between concrete and template, after pouring concrete, concrete slides very freely at template surface, molten and, thereby formed very bright and clean surface, watered and outpour high-level clear-water concrete.
As preferably, before described template paint brushing reply steel form surface eliminate rust, dedusting.
As preferably, before steel form installation, at all steel form seams place sticking two-faced adhesive tape band, prevent seam spillage.
As preferably, in step (6), mix proportion design should be followed following principle: 1. cement strength Deng Ji≤45.2,2. admixture kind and the volume of cement plant cement production process are relatively stable, 3. sandstone aggregate grating is continuous, should select the sandstone aggregate that originates from same stock ground solid colour, and 4. concrete admixture selects the above flyash of secondary or average grain diameter to be less than the breeze of 0.1mm, and volume is not more than 20% of cementitious matter total amount, 5. concrete admixture water reducing agent.
As preferably, in step (6), mixing concrete requires: 1. concrete mixing plant adopts automatic gauge proportioner, and 2. 3. mixing concrete water adopts drinkable clean water than conventional mixing concrete time lengthening 20～30s the mixing concrete time.
As preferably, in step (7), the striking time of steel form is consistent, and 48h after being generally concreting winter and completing, is generally 24h summer.
The present invention has adopted above-mentioned measure to improve, beneficial effect is remarkable: the Large Steel template of take is installed and Construction Technology of Fair Faced Concrete is core, systematic generalization main technique, technical requirements and the work progress of the dry concrete constructions such as water conservancy project structure gate piers, build that gate pier surfacing after moulding is bright and clean, curved surface circular arc and plane rat tail soft smooth and easy, corner angle are straight, concrete surface color and luster is consistent.
, feature that surface area large large in conjunction with water conservancy project structure volume in addition, utilize Large Steel template monomer surface long-pending large, the advantage that self structure intensity is high, formwork erection of gate pier is built height and can be reached more than 15 meters, accelerated construction speed, increase concreting side's amount, reduced concrete construction joint simultaneously.
By mix proportion, design, do not increasing under the prerequisite of cement consumption, take corresponding working measure, make concrete presentation quality reach clear-water concrete quality specifications.
Accompanying drawing explanation
Fig. 1 is process chart of the present invention.
The specific embodiment
The present invention is further illustrated in conjunction with the embodiments to contrast accompanying drawing below:
Shown in Fig. 1, a kind of gate pier clear-water concrete one-shot forming construction in embodiment 1, step comprises the design of (1) steel form:
Before a, steel form design, should be familiar with the structure design drawing relevant to template comprehensively, define architecture quality requirement, understand the relevant support of this engineering construction tissue design and set up and the situation such as vertical transport equipment layout, in conjunction with template construction on-the-spot place and installation, the condition such as have bad luck, store up, tentatively determine template maximum size and modulus;
B, steel form design should be followed standardization, unitized basic demand, simultaneously to carrying out specialized designs as special construction positions such as gate pier bracket, gate slot, outrigger platform, sealing, cat ladders;
C, according to structure structure form, in conjunction with working load, formwork and formwork supports system is carried out to mechanical calculation;
D, establishment steel form are installed constructure scheme, comprising: the segmentation elevation that 1. gate pier is built, the template configuration of middle pier, seam pier and different elevations; 2. turnover mode of occupation and the plan of clear and definite steel form, establishment steel form and support system material specification kind list; Draw steel form constitutional diagram, special construction position template detail drawing of installation etc.; 3. determine installation and the dismounting order of template.
(2) steel form is made: a, template construct material adopt Q235 steel, and its quality should meet the regulation of GB/T700, must not adopt the steel of corrosion; B, punching block panel are thick 6mm steel plate, interior stupefied employing 6# channel-section steel, vertical and level interval is generally 400～500mm, inwardly stupefied and panel is welded to form plate face structure in length and breadth, concrete lateral pressure passes to vertical outer stupefied by plate face structure, outer stupefied employing Two bors d's oeuveres 14# channel-section steel, spacing is generally 1000～1500mm, and steel form completes; After c, steel form complete, the rustproof paint of brushing in time except panel.
(3) measurement setting-out: a, template should be carried out setting-out by project organization size before installing, and measure gate pier center line and formwork erection and control sideline; B, the uneven place of base surface should be by horizontal elevation cement mortar screedings.
(4) reinforcement fabrication is installed:
A, kind, specification are met to the reinforcing bar of designing requirement, reinforcing bar Yi processing factory makes moulding;
B, gate pier vertical reinforcement adopt electroslag pressure welding welding, and welding quality standard should meet the demands, and horizontal bar overlap joint adopts electric welding, to increase integral rigidity (build while being highly less than 6m when gate pier, can adopt overlap joint);
C, gate pier are built while being highly greater than 6m, while designing without tension rib, should set up steel tie, and level and vertical spacing are 1500～2000mm, to guarantee the horizontal cross dimensions of gate pier reinforcing bar, prevent bulk deformation;
When d, gate pier height are higher, the construction of reinforcing bar sectional, when construction height reaches 6m and needs above to continue construction, should utilize support that positioning tie bar is set, and prevents reinforcing bar unstability torsional deformation;
E, reinforcement installation complete the topping of colligation in time cushion block.
(5) steel form install to be proofreaied and correct: steel form before installing first to its surface eliminate rust, dedusting, again to steel form brushing template paint, template paint of the present invention adopts BT-20 modified polyurethane template paint, template paint must be with hairbrush or spraying process, the dried steel form of mopping is uprightly stacked, adjacent steel template contact surface separates by geotextiles, prevents from damaging paint film.Until while installing, by all steel form seams place sticking two-faced adhesive tape band.Concrete installation steps comprise:
A, by form assembly figure, template is numbered, it is assembled that words with good conditionsi should be carried out scene examination;
B, template install should be from circular arc termination, carries out temporary fixedly after arc end installation in position, then carries out flat formwork installation.Flat formwork is installed symmetrical installation in opposite directions, inserts alignment pin immediately after in place in Template Location hole, and the connecting bolt of screwing on, is fixed on Template Location pull bar on support, prevents template off normal;
After c, the installation of first floor template, poling tie rod screw rod and inner support should be installed in time, by adjusting positioning tie bar calibration template verticality and glacing flatness suitable for reading, tighten tie rod screw.The installation accuracy of first floor template should strictly be controlled, otherwise will directly affect the installation accuracy of upper former;
Template and the built-in fitting of the privileged sites such as d, gate slot, manhole should carry out pre-installation prior to large area template, after large form installation is fixing, adjust;
E, bracket template install should set up i iron on support bracket top in advance, then that bracket formwork hoisting is in place, reinforces after utilizing jack and Chain block to adjust to the right place;
F, layout poling tie rod screw hole are answered integrated structure and attractive in appearance being evenly arranged, and poling tie rod screw rod two ends arrange nylon stopper and pvc pipe socket, and for preventing that cement paste from infiltrating, junction should adopt adhesive tape to be wound around sealing;
In g, large form (template that refers to bulk area) installation process, should avoid wiping as far as possible and touch reinforcing bar, can be at the outer vertical some hoses of colligation of reinforcing bar.
(6) concreting:
A, design of concrete.Its mix-design should be followed following principle:
1. cement strength Ji≤45.2, steady quality, Strength surplus coefficient are large, should adopt the same kind cement of same manufacturer;
2. admixture kind and the volume of cement plant cement production process are relatively stable;
3. sandstone aggregate grating is continuous, should select the sandstone aggregate that originates from same stock ground solid colour, and aggregate requires: coarse aggregate is clean natural or hand breaking material, and grating must be continuously, the maximum Li Jing≤40mm of aggregate;
4. concrete admixture can improve concrete density, effectively improves concrete impervious, corrosion resistance, reduces water-cement ratio.Admixture should select the above flyash of secondary or average grain diameter to be less than the breeze of 0.1mm, and volume is not more than 20% of cementitious matter total amount;
5. Admixture: admixture high efficiency water reducing agent can effectively reduce water-cement ratio, reduces the heat of hydration, improves concrete workability and durability.
B, mixing concrete require:
1. concrete mixing plant should adopt automatic gauge proportioner;
2. the volume of various Admixtures must be accurately;
3. the mixing concrete time is than conventional mixing concrete time lengthening 20～30s;
4. mixing concrete water should adopt drinkable clean water.
C, concrete employing have storehouse face to build, tumbling barrel blanking method;
D, concreting lift height should be determined according to placing intensity, initial setting time, vibrator power etc., generally with 40cm left and right, are advisable;
E, concrete adopt secondary shake smash method and strictly control shake and smash the time, carry out secondary shake and smash building the concrete lower-layer concrete of tackling in upper strata simultaneously.
(7) steel form is removed:
A, striking time should be consistent, and 48h after being generally concreting winter and completing, is generally 24h summer, and it is dismountable that load-carrying members template reaches design strength rear;
B, by form removal order, extract tie rod screw rod out, cast dead tie rod screw rod and should cut off;
C, form removable should be carried out from top to bottom, first remove bracket template, then remove successively upstream and downstream arc end template, then remove flat panel form;
The dismounting of d, flat panel form answers symmetry to carry out, and first with tower crane wire rope, hitches template, then unclamps successively positioning tie bar, extracts poling pull bar out, unloads connecting bolt, and template departs to rise to winch to after concrete surface naturally stores up a little;
When e, template can not depart from concrete surface naturally, available crowbar utilizes template side seams to prize gently, or with Chain block, template is pulled;
F, stripping, for use next time, can clear up template.
(8) concrete curing:
After a, form removable, should check whether pier concrete exists defect comprehensively, and remove the concrete chip that form removal process sticks to concrete surface;
B, the concrete surface defect that inspection is found are answered technical finesse.The tiny seam of protruding concrete surface, can adopt liquid honing smooth.The obvious place of local bubble can adopt with concrete with kind cement and white cement mixing and stirring by a certain percentage, is modulated into the color close with concrete, with plastics scraping blade, bubble embedding is criticized smoothly, with cotton yarn, wipes unnecessary cement paste;
C, gate pier tie rod screw rod poling hole planted agent fill tamping with powder stick type cement anchoring agent, and the employing of plug hole is with concrete with kind cement, white cement, sand, and the mortar embedding of the appropriate micro-expanding agent modulation of admixture is mended closely knit;
D, concrete curing can adopt plastic sheeting parcel pier body or spray curing agent, and concrete curing time is no less than 14d;
E, watering method of curing water quality are answered clean.
What more than enumerate is only specific embodiments of the invention, obviously, the invention is not restricted to above embodiment.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention, all should belong to protection scope of the present invention.
Claims (9)
1. a gate pier clear-water concrete one-shot forming construction, is characterized in that, step comprises
Steel form design: tentatively determine template maximum size and modulus, in conjunction with working load, formwork and formwork supports system is carried out to mechanical calculation according to structure structure form, and work out template plan for installation and construction;
Steel form is made: large punching block panel is thick 6mm steel plate, interior stupefied employing 6# channel-section steel, vertical and level interval is 400～500mm, inwardly stupefied and panel is welded to form plate face structure in length and breadth, concrete lateral pressure passes to vertical outer stupefied by plate face structure, outer stupefied employing Two bors d's oeuveres 14# channel-section steel, spacing is 1000～1500mm, the steel form completing is standby;
Measure setting-out: template should be carried out setting-out by project organization size before installing, measure gate pier center line and formwork erection and control sideline;
Reinforcement fabrication is installed: gate pier vertical reinforcement adopts electroslag pressure welding welding, and horizontal bar overlap joint adopts electric welding; When gate pier, build while being highly less than 6m, can adopt overlap joint, when gate pier, build height 6m when above, utilize support that positioning tie bar is set;
Steel form is installed and is proofreaied and correct: 1. by form assembly figure, template is numbered, 2. template installation should be from circular arc termination, then carry out flat formwork installation, all fix, 3. after the installation of first floor template, poling tie rod screw rod and inner support are installed in time, and poling tie rod screw rod two ends arrange nylon stopper and pvc pipe socket;
Concreting: 1. concrete is mixed and stirred by the match ratio of design, 2. adopt and have storehouse face to build, tumbling barrel blanking method;
Steel form is removed: first by form removal order, extract tie rod screw rod out, then remove steel form from top to bottom;
Concrete curing: after steel form is removed, remove form removal process and stick to the concrete chip of concrete surface, and corresponding processing is done in defective place.
2. gate pier clear-water concrete one-shot forming construction according to claim 1, is characterized in that, in step (2), and after steel form completes, the rustproof paint of brushing in time except panel.
3. gate pier clear-water concrete one-shot forming construction according to claim 1, is characterized in that, in step (4), reinforcement installation completes the topping of colligation in time cushion block.
4. gate pier clear-water concrete one-shot forming construction according to claim 1, it is characterized in that, in step (5), steel form is brushing template paint before installation, template paint must be with hairbrush or spraying process, the dried steel form of mopping is uprightly stacked, and adjacent steel template contact surface separates by geotextiles.
5. gate pier clear-water concrete one-shot forming construction according to claim 4, is characterized in that, eliminate rust in the described front reply of template paint brushing steel form surface, dedusting.
6. gate pier clear-water concrete one-shot forming construction according to claim 4, is characterized in that, steel form is installed front at all steel form seams place sticking two-faced adhesive tape band, prevents seam spillage.
7. gate pier clear-water concrete one-shot forming construction according to claim 1, it is characterized in that, in step (6), mix proportion design should be followed following principle: 1. cement strength Deng Ji≤45.2, 2. admixture kind and the volume of cement plant cement production process are relatively stable, 3. sandstone aggregate grating is continuous, should select the sandstone aggregate that originates from same stock ground solid colour, 4. concrete admixture selects the above flyash of secondary or average grain diameter to be less than the breeze of 0.1mm, and volume is not more than 20% of cementitious matter total amount, 5. concrete admixture water reducing agent.
8. gate pier clear-water concrete one-shot forming construction according to claim 1, it is characterized in that, in step (6), mixing concrete requires: 1. concrete mixing plant adopts automatic gauge proportioner, 2. 3. mixing concrete water adopts drinkable clean water than conventional mixing concrete time lengthening 20～30s the mixing concrete time.
9. gate pier clear-water concrete one-shot forming construction according to claim 1, is characterized in that, in step (7), the striking time of steel form is consistent, and 48h after being generally concreting winter and completing, is generally 24h summer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310707265.0A CN103669357A (en) | 2013-12-20 | 2013-12-20 | Gate-pier fair-faced concrete one-off forming construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310707265.0A CN103669357A (en) | 2013-12-20 | 2013-12-20 | Gate-pier fair-faced concrete one-off forming construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103669357A true CN103669357A (en) | 2014-03-26 |
Family
ID=50308071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310707265.0A Pending CN103669357A (en) | 2013-12-20 | 2013-12-20 | Gate-pier fair-faced concrete one-off forming construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103669357A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790353A (en) * | 2015-05-05 | 2015-07-22 | 广东省源天工程有限公司 | Sluice pier construction method for small and medium size sluices |
| CN105271972A (en) * | 2015-09-21 | 2016-01-27 | 长沙县三和新型建材有限公司 | Mineral waste admixture hydraulic concrete |
| CN106087881A (en) * | 2016-02-19 | 2016-11-09 | 河海大学 | A kind of precast concrete box-structure and cast-in-place concrete convolution Sluice Pier structure and construction technology thereof |
| CN107700358A (en) * | 2017-09-18 | 2018-02-16 | 王卫星 | The construction method of track traffic pier stud |
| CN112065032A (en) * | 2020-08-05 | 2020-12-11 | 上海建工二建集团有限公司 | Double-spliced template for reserving dense cicada seams of clean water concrete and preparation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101025052A (en) * | 2007-03-16 | 2007-08-29 | 北京城建集团有限责任公司 | Cast-in-situ clear-water concrete viewing platform form board and its construction method |
| CN101173530A (en) * | 2006-11-02 | 2008-05-07 | 上海市第七建筑有限公司 | Construction method of concrete wall panel |
| CN101338595A (en) * | 2008-08-12 | 2009-01-07 | 中建三局第三建设工程有限责任公司 | Construction method of haydite dry concrete wall |
| CN202644483U (en) * | 2012-05-22 | 2013-01-02 | 浙江省第一水电建设集团股份有限公司 | Pier large steel template |
-
2013
- 2013-12-20 CN CN201310707265.0A patent/CN103669357A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173530A (en) * | 2006-11-02 | 2008-05-07 | 上海市第七建筑有限公司 | Construction method of concrete wall panel |
| CN101025052A (en) * | 2007-03-16 | 2007-08-29 | 北京城建集团有限责任公司 | Cast-in-situ clear-water concrete viewing platform form board and its construction method |
| CN101338595A (en) * | 2008-08-12 | 2009-01-07 | 中建三局第三建设工程有限责任公司 | Construction method of haydite dry concrete wall |
| CN202644483U (en) * | 2012-05-22 | 2013-01-02 | 浙江省第一水电建设集团股份有限公司 | Pier large steel template |
Non-Patent Citations (3)
| Title |
|---|
| 王兵: "云阳县门坎滩水电站重力坝工程闸墩施工及质量控制", 《广东科技》 * |
| 雷涛等: "浅谈清水混凝土施工技术在曹娥江大闸闸墩中的应用", 《水利建设与管理》 * |
| 黄刚等: "观音岩水电站混凝土的透水模板工艺应用", 《施工技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790353A (en) * | 2015-05-05 | 2015-07-22 | 广东省源天工程有限公司 | Sluice pier construction method for small and medium size sluices |
| CN105271972A (en) * | 2015-09-21 | 2016-01-27 | 长沙县三和新型建材有限公司 | Mineral waste admixture hydraulic concrete |
| CN106087881A (en) * | 2016-02-19 | 2016-11-09 | 河海大学 | A kind of precast concrete box-structure and cast-in-place concrete convolution Sluice Pier structure and construction technology thereof |
| CN106087881B (en) * | 2016-02-19 | 2018-04-03 | 河海大学 | A kind of precast concrete box-structure and cast-in-place concrete convolution Sluice Pier structure and its construction technology |
| CN107700358A (en) * | 2017-09-18 | 2018-02-16 | 王卫星 | The construction method of track traffic pier stud |
| CN112065032A (en) * | 2020-08-05 | 2020-12-11 | 上海建工二建集团有限公司 | Double-spliced template for reserving dense cicada seams of clean water concrete and preparation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107297810A (en) | A kind of making of precast wall body component and installation method | |
| CN103669357A (en) | Gate-pier fair-faced concrete one-off forming construction method | |
| CN111946124B (en) | Method for manufacturing silo with vertical shaft structure by using section bar combined frame for silo | |
| CN104372890A (en) | Construction method of bare concrete prefabricated box beam with complicated structure | |
| CN104963289B (en) | A kind of abnormity pier stud mass concrete overall time pouring construction method | |
| CN103774561B (en) | The job execution of speedway prefabricated small box girder frock method streamlined | |
| CN107882321A (en) | Diameter Silo slding form operation engineering method | |
| CN108331334A (en) | Shear wall, cylinder concrete structure large form hoisting type construction method | |
| CN110682433A (en) | Prefabricated stand column construction scheme | |
| CN103615076B (en) | The oblique roofing concrete construction method of a kind of heavy grade | |
| CN208280003U (en) | A kind of bridge pier over-form construction system | |
| CN105239718A (en) | Integral heat insulation wallboard building system | |
| CN205296878U (en) | Construct interim protective structure of cast -in -place reinforcing bar | |
| CN108726348B (en) | Horizontal prefabrication, overturning and hoisting method for pipe gallery segments | |
| CN102677895B (en) | Suspended formwork pouring method for concrete foundation steps | |
| CN101994292A (en) | Rapid construction of high bridge pier by efficient combination | |
| CN103216102A (en) | Construction method for tremie guiding pouring inside steel pipe column | |
| CN106223460B (en) | The prefabricated construction method of large scale wallboard | |
| CN109868923B (en) | Construction method of bare concrete of loose-spliced wood formwork | |
| CN112412008A (en) | Seamless construction method for accurate slope finding of super-large concrete flat roof structure | |
| CN111648256A (en) | Pier body reinforcing construction method | |
| CN110230414A (en) | A kind of assembled platform canopy and its installation method | |
| CN105421780B (en) | A kind of construction method of prefabricated concrete structure | |
| CN115890877A (en) | Adjustable diaphragm plate template and construction method thereof | |
| CN102767284B (en) | Semi-prefabricating construction process for concrete thin-wall lower return eave |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140326 |
|
| RJ01 | Rejection of invention patent application after publication |