CN110258890A - A kind of broken line type exterior wall is connected the construction method of concrete structure with roofing - Google Patents
A kind of broken line type exterior wall is connected the construction method of concrete structure with roofing Download PDFInfo
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- CN110258890A CN110258890A CN201910546607.2A CN201910546607A CN110258890A CN 110258890 A CN110258890 A CN 110258890A CN 201910546607 A CN201910546607 A CN 201910546607A CN 110258890 A CN110258890 A CN 110258890A
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- concrete
- broken line
- exterior wall
- line type
- roofing
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/02—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs
- E04B7/04—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs supported by horizontal beams or the equivalent resting on the walls
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a kind of broken line type exterior walls to be connected the construction method of concrete structure with roofing, include the following steps: CAD setting-out → field lofting → measurement and positioning → template support frame body set up → template construct, installation → reinforcement fabrication, installation → broken line type exterior wall first time concrete placings, maintenance → construction joint pick chisel, second of concrete placings of cleaning → broken line type exterior wall and roofing, maintenance → demoulding.The connected construction technology of engineering multispan broken line type concrete exterior wall and roofing in the present invention, broken line type concrete structure and component construction method are summed up, overcome the deficiency in previous construction, template construct is simple, size is accurate, reinforcing is convenient, component broken line rate controls in place, concrete impression quality is good, and provides reference value for the construction of similar engineering.
Description
Technical field
The invention belongs to the realm of building construction, and in particular to a kind of broken line type exterior wall is connected the applying of concrete structure with roofing
Work method.
Background technique
With construction industry development and use the raising of functional requirement, the more and more novel uniqueness of the moulding of building construction, broken line
The features such as type building is unique, serious, visual sensory is good with its external form is widely used, and unique model becomes urban construction
In one of beautiful landscape.But broken line type architecture construction is complex, template subdivisional work from design, setting-out, be fabricated into peace
It is cumbersome to fill technique, axial location and sectional dimension location control difficulty is big, required precision is high, structure and component broken line rate are difficult to control
System, reinforcing bar binds quality control and safety problem perplexs unit in charge of construction, and concrete Forming Quality is difficult to ensure.The attached Rugao dragon trip of Beijing Foreign Language Studies University
Lake School of Foreign Languages performing arts center, type of taking out stitches concrete exterior wall are to extend to roofing (3.3m~15.3m) from ground floor
Broken line type structure, using wooden model steel tube fastener scaffold support system, broken line position template, reinforcement fabrication refer to CAD full-page proof
Figure one-pass molding, concrete placings sequence first pour broken line two sides pour again top, the slump of strict control concrete, pour finish it is laggard
No less than 7 days moisture-keeping maintainings of row.Project management department has formulated detailed construction by combining theory and practice together and conscientiously discussing, study
Scheme achieves preferable effect by well construction.
Summary of the invention
Goal of the invention: in order to solve the deficiencies in the prior art, the present invention provides a kind of broken line type exterior walls to be connected with roofing
The construction method of concrete structure.
Technical solution: a kind of broken line type exterior wall is connected the construction method of concrete structure with roofing, includes the following steps:
CAD setting-out → field lofting → measurement and positioning → template support frame body sets up → template construct, installation → reinforcing bar system
Work, installation → broken line type exterior wall first time concrete placings, maintenance → construction joint pick second of chisel, cleaning → broken line type exterior wall and roofing
Concrete placings, maintenance → demoulding；Wherein:
The template support frame body is set up, and concrete operations are as follows:
It carries out frame body according to the position line of support frame system and absolute altitude to set up, broken line type exterior wall support frame every upright bar of system
Absolute altitude is all different, symmetrical as center both sides using broken line, and upright bar vertically and horizontally spacing 800mm, bar of sweeping the floor is away from ground 200mm, horizon bar
Spacing is not more than 1500mm, and bottom of upright rod makees backing plate with 50mm solid wood；Upright bar, horizontal knock-off joint are staggered no less than 1 across
It is connected, is forbidden using overlap joint using joint fastener, supporting frame is horizontal, vertical direction is respectively provided with vertically and horizontally bridging, and top is certainly
Diagonal brace is arranged to both sides in center, it is ensured that the overall stability of frame body；During formwork erection, reinforcing bar binding, concrete placings,
Frame body is monitored, discovery has displacement to be adjusted in time；
The template construct, installation, concrete operations are as follows:
Since broken line type concrete exterior wall has batter post, beam, broken line plate, negative ridge, positive ridge, causing template to be laid with cannot be according to routine
Method carries out, and will cause the waste of template, flitch like that, so that construction cost increases；When template construct, according to the template of in-depth
Drawing carries out accurate setting-out in template, and each piece of template of each broken line plate is numbered, and mosaic part will be with section
Saving is principle, it is desirable that blanking is accurate, size is correct, using all leftover pieces, and the big big use of material, the small small use of material；
When template is installed, column, the beam forms between multispan broken line plate need to be first installed, this part-structure position and absolute altitude are not easy
Control, need to directly measure according to the control line and absolute altitude of lower floor, according to code requirement arch camber in the middle part of beam slab；Broken line template die plate
It installs, girder usesSteel pipe is laid with, and makes broken line type according to drawing, the spacing and mark required further according to scheme
Height is mounted at the top of support frame in upright bar；45 × 95mm flitch secondary beam is laid on girder steel pipe, then spacing 200mm is laid with
15mm thickness glued board, fixation as required between glued board and flitch, flitch and steel pipe；
For convenient for broken line type exterior wall concrete placings, to reinforcing bar binding after, it is pre-buried in broken line plate according to layout design
10 steel bar end@900 × 900, at the same it is pre-buried18 soil font reinforcing bars, in order to set up interim steel pipe protective frame；Steel pipe protective frame
Set up need it is solid and reliable, be convenient for concrete placings and subsequent external wall construction, protective frame upright bar spacing be not more than 2400mm, horizontal tube
Spacing is not more than 1500mm, can carry out broken line type exterior wall first time concrete placings after qualified by inspection；
The reinforcement fabrication, installation, concrete operations are as follows:
The reinforcing bar of broken line type concrete exterior wall and roofing carries out turning over sample and live blanking processing according to drawing in advance, and uses CAD
The groupware that charts carries out size review, and the broken line degree of reinforcing bar must be consistent with drawing, and otherwise the protective layer thickness of reinforcing bar will not
Easy to control, board bottom muscle, which is used, controls concrete cover thickness using reinforcing bar stirrup with Concrete seat pad, plate upper layer muscle, and cushion block and stirrup are vertical
Horizontal spacing is 1000mm, and blossom type is staggeredly arranged, and double steel bar mesh sheet is full bundle, to prevent concrete from gliding, two layers of reinforcing bar
No more than 800mm, the steel fabric sheet that mesh is 20 × 20mm is bound the intermediate spacing that is all made of of net；
The broken line type exterior wall first time concrete placings, maintenance → construction joint pick chisel, cleaning → broken line type exterior wall and roofing
Second of concrete placings, maintenance, concrete operations are as follows:
Concreting avoids the rainy day from constructing, and concrete uses commerical ready-mixed concrete, and strict control is marched into the arena concrete mix
And the slump, concrete strip thickness control standard point is carried out before pouring, design thickness and the plate thickness to guarantee concrete are uniform；Broken line
Type concrete exterior wall and roofing, which pour concrete, must have special messenger to be responsible for, unified command coordination, since concrete placings amount is big, and be broken line type, will
The joints of concrete projects of broken line type concrete exterior wall and roofing is located at the inner corner trim of folded plate, first pours triangular form inclined-plane, is wanted to concrete strength satisfaction
Concrete at construction joint is carried out after asking to pick chisel, is then washed with water completely, and go stone concrete to carry out connecing slurry with same label, then pour yin
The above broken line type concrete exterior wall in angle and roofing concrete；
It is poured upwards since broken line type exterior wall bottom edge from bottom to top when pouring concrete, first pours broken line type exterior wall two sides, most
It at the top of after-pouring, is vibrated using poker vibrator, concrete is with smashing with vibration, and vibration point uniformly, pull out slowly, until surface by fast insert
Unobvious sinking, until not occurring bubble and glowing mortar, to ensure the density of casting and compacting of concrete；Strict control concrete when pouring
The slump, broken line type exterior wall two sides and roofing sun ridge control respectively, and since the two sides gradient is larger, concrete slump is answered smaller；
The difficulty of construction for pouring opposite exterior wall of broken line type roofing concrete is smaller, and roofing is pushed ahead i.e. with the progress that pours of exterior wall
It can；But it is noted that the positive ridge of broken line type roofing and exterior wall needs band line to modify, and check the deviation of size；After concrete vibration compacting first
Just put down, carries out second plastering, covering maintenance before final set again after concrete initial set；
Maintenance work need to especially be carried out, on the broken line plate for having poured concrete, using gunnysack or carpet cloth water seasoning come
Concrete surface moisture state is kept, curing time is no less than 7 round the clock, forbids upper people during maintenance and carry out operation on it,
Demoulding is carried out after reaching concrete strength；
The demoulding, concrete operations are as follows:
Form bracing system is removed after concrete strength reaches 100%, when dismounting according to " first prop up tear open afterwards, rear branch it is first
Tear open " principle, from top to bottom, successively carry out, material is forbidden to forbid to prize firmly using crowbar, must not break from eminence throwing when dismounting
The corner angle on bad concrete surface, after dismounting, material should be stacked neat by different cultivars, specification classification.
As optimization: the CAD setting-out, concrete operations are as follows: the broken line degree of broken line type exterior wall and position pass through support
The position of frame controls, and broken line template is abutted and connect with support girder, and support girder with support girder is abutted and connect, therefore
Setting up for support frame will be arranged meticulously, calculated；In order to guarantee template broken line degree, to each upright bar before the setting up of support frame
Meticulous arrangement is carried out with the position of broken line type rod piece, absolute altitude, is calculated, and carries out rod piece height by means of the CAD drawing groupware
Measurement, reinforcing bar arrangement, plate muscle blanking, template and axial dimension review.
As optimization: the field lofting, concrete operations are as follows:
Broken line type concrete exterior wall and roofing are before supporting frame is set up, it is necessary to which ability is real after being sufficiently ready work at the scene
It applies, so it is also difficult point that the absolute altitude of support frame and batter post that carpenter sets up and positioning, which are the emphasis for first having to solve when construction, tool
Body absolute altitude and positioning cooperate carpenter to complete by technical staff by the multiple measurement and the positioning of projection line of bench mark；It is constructing
Before, the line setting of bottom is particularly important, and project management department technical staff requires carpenter teams and groups first to carry out by the gross data of CAD setting-out
The practical setting-out in scene, that is, after support frame is set up, first by the standard of 8 span centres across i.e. from western second eastwards across it is oblique
Column, beam, Side fascia formwork erection in place, then by field technician and design drawing, the data school repeatedly of CAD setting-out
It, can large-area construction after confirmation field lofting accurately meets construction requirement to rear.
As optimization: the measurement and positioning, concrete operations are as follows: according to CAD full-size drawing and construction drawing, to one layer of axis
Line, component, absolute altitude carry out unwrapping wire, positioning, levelling, and broken line wallboard and roofing position should have axis, sideline, control line, according to mould
Plate special construction plan releases " cross " position line of support frame system upright bar, and checks each spots localization unwrapping wire, draws
It control point and makes a record out, it is ensured that tolerance is in specification prescribed limit.
As optimization: material prepares as follows: formwork bracing system frame body supervisor usesSteel pipe, template use
15mm thickness clad can wood plywood, girder use 45 × 95mm flitch, and frame body steel pipe, fastener, adjustable bracket, template, flitch exist
Conscientiously it should be checked and be selected when marching into the arena, steel pipe, fastener use the live sampling inspection of preceding progress after marching into the arena, after detection is qualified again
It uses, it is serious to appearance corrosion, slight crack, depression defect to forbid using template and flitch are selecting specification unified just
Product material.
The construction technology the utility model has the advantages that the engineering multispan broken line type concrete exterior wall and roofing in the present invention are connected, has summed up folding
Line style concrete structure and component construction method overcome the deficiency in previous construction, and template construct is simple, size is accurate, reinforces just
Victory, component broken line rate control in place, and concrete impression quality is good, and provides reference value for the construction of similar engineering.
Detailed description of the invention
Fig. 1 is CAD setting-out structural schematic diagram of the invention.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, so that the technology of this field
Personnel can better understand advantages and features of the invention, to make apparent boundary to protection scope of the present invention
It is fixed.Embodiment described in the invention is only a part of the embodiment of the present invention, instead of all the embodiments, based on the present invention
In embodiment, those of ordinary skill in the art's every other implementation obtained without making creative work
Example, shall fall within the protection scope of the present invention.
Embodiment
The type concrete exterior wall of taking out stitches of certain engineering extends to roofing (15.3m) from ground floor (3.3m), by eight Span Continuous
Broken line wallboard composition, broken line degree is respectively 33 degree, 41 degree and 47 degree, and exterior wall and roof boarding plate thickness are respectively 120mm and 130mm,
Two-layer two-way reinforcement；One layer of column cross-section size of exterior wall are as follows: 900 × 1200,700 × 700mm, the batter post section being connected with Side fascia
Having a size of 400 × (750~1200) mm；Broken line type concrete roof beam section size are as follows: 300 × (500~700), 350 × (800~
1400), 400 × 750,450 × 500mm.Template is installed since raft plate top surface, is installed height and is up to 18.95m, high-supported formwork
Vertically and horizontally horizontal direction maximum span is respectively 18.6 meters and 8 meters in region, and one layer of column concrete grade of concrete strength grade is C40, with folding
Line style concrete exterior wall phase pedestal concrete grade is C35；Broken line type concrete exterior wall and roof girder, plate concrete grade are C30.
1. process flow
Broken line type concrete exterior wall of the invention is different from general plate and inclined plate, the setting up of formwork-support, template and steel
Production of muscle and installation etc. are both needed to by accurately calculating and line setting, can guarantee the accurate of structure cross-section dimensions and absolute altitude
Property.Its process flow is as follows:
CAD setting-out → field lofting → measurement and positioning → template support frame body sets up → template construct, installation → reinforcing bar system
Work, installation → broken line type exterior wall first time concrete placings, maintenance → construction joint pick second of chisel, cleaning → broken line type exterior wall and roofing
Concrete placings, maintenance → demoulding.
2. preparation of construction
2.1 technique preparation
Before construction, Project Technical responsible person organizes surveyor, builder, technician, class monitor and group leader etc. to be conscientiously familiar with drawing, learns
Specification and quality standard are practised, makes practicable arrangement and method for construction, and by safe software for calculation of siping tea to formwork-support
Carry out safety check, it is ensured that support system is safe and reliable.It is expected that it will be likely encountered the problem of drawing and in work progress
The problem of etc. aggregated, tissue drawing joint examination and technical solution symposium, set up construction special interest group, establish wechat
Group, it is ensured that construct, communicate unimpeded, so that problem can fed back at the first time and solved, do for broken line type concrete structure construction
Good technique preparation and support.2.2 personnel prepare
Labour, especially carpenter, bar bender, concrete work are conscientiously organized according to construction schedule and engineering characteristic, excellent
It first selects and participated in similar engineering construction, there is stronger practical operation experience, the preferable skilled worker of physical fitness.It is applied according to this engineering
Work drawing and technological difficulties are conscientiously organized to carry out skilled worker in conjunction with broken line type structure construction feature and engineering practice
It is detailed to confide a technological secret and live practical operation analogue technique guidance, it is ensured that each worker can be familiar with the construction method and stream of this work post
Journey.According to sequence of construction and process, determine people and determine region quantitatively to calibrate standard, it is ensured that preparation of construction, work progress, inspection, check and accept it is complete
Process control is in place.
2.3 materials prepare
By construction requirement, sequence of construction and materials plan, fed in time by construction material management system, it is existing to meet construction
Field needs.Formwork bracing system frame body supervisor usesSteel pipe, template use 15mm thickness clad can wood plywood, girder
Using 45 × 95mm flitch, frame body steel pipe, fastener, adjustable bracket, template, flitch conscientiously should be checked and be chosen when marching into the arena
Choosing, steel pipe, fastener march into the arena after using the live sampling inspection of preceding progresss, reused after detection is qualified, to occur corrosion seriously, split
The defects of trace, recess, forbids to use, and template and flitch select certified products material that regular producer produces, that specification is unified
Material, it is ensured that a variety of materials meet design and operational requirement.
2.4 construction installations prepare
2.4.1 safety devices: broken line type structure construction, safety guarantee be it is primary, before construction, it is necessary to assure foot hand
The operation layer of frame completely spreads scaffold board, guard rail rod of setting up defences, hangs up Dense mesh screen, safety net, and qualified by inspection.
2.4.2 construction machinery: vertical transport derrick crane, it is necessary to assure have enough safe altitudes and operation is good
It is good.
2.4.3 small-sized construction equipment: electric saw, electric planer, Portable vibrator etc., mechanical performance is good.
3. construction method
3.1CAD setting-out
The broken line degree of broken line type exterior wall and position are controlled by the position of support frame, broken line template and support girder
It abuts and connects, support girder is abutted and connect with support girder, therefore to be arranged, be calculated meticulously to setting up for support frame.For
Guarantee template broken line degree carries out the position of each upright bar and broken line type rod piece, absolute altitude before the setting up of support frame meticulous
Arrangement, calculate.As shown in the CAD setting-out structural schematic diagram of Fig. 1, the survey of rod piece height is carried out by means of the CAD drawing groupware
Amount, reinforcing bar arrangement, plate muscle blanking, template and axial dimension review etc..
3.2 field lofting
Broken line type concrete exterior wall and roofing are before supporting frame is set up, it is necessary to which ability is real after being sufficiently ready work at the scene
It applies, so it is also difficult point that the absolute altitude of support frame and batter post that carpenter sets up and positioning, which are the emphasis for first having to solve when construction, tool
Body absolute altitude and positioning cooperate carpenter to complete by technical staff by the multiple measurement and the positioning of projection line of bench mark.It is constructing
Before, the line setting of bottom is particularly important, and project management department technical staff requires carpenter teams and groups first to carry out by the gross data of CAD setting-out
The practical setting-out in scene, that is, after support frame is set up, first by the standard of 8 span centres across i.e. from western second eastwards across it is oblique
Column, beam, Side fascia formwork erection in place, then by field technician and design drawing, the data school repeatedly of CAD setting-out
It, can large-area construction after confirmation field lofting accurately meets construction requirement to rear.
3.3 measurement and positioning
According to CAD full-size drawing and construction drawing, unwrapping wire, positioning, levelling, broken line wallboard are carried out to one layer of axis, component, absolute altitude
And roofing position should have axis, sideline, control line, and " cross " of the upright bar of support frame system is released according to template special construction plan
Position line, and each spots localization unwrapping wire is checked, control point is drawn and is made a record, it is ensured that tolerance is provided in specification
In range.
3.4 template support frame bodies are set up
It carries out frame body according to the position line of support frame system and absolute altitude to set up, broken line type exterior wall support frame every upright bar of system
Absolute altitude is all different, symmetrical as center both sides using broken line, and upright bar vertically and horizontally spacing 800mm, bar of sweeping the floor is away from ground 200mm, horizon bar
Spacing is not more than 1500mm, and bottom of upright rod makees backing plate with 50mm solid wood.Upright bar, horizontal knock-off joint are staggered no less than 1 across
It is connected, is forbidden using overlap joint using joint fastener, supporting frame is horizontal, vertical direction is respectively provided with vertically and horizontally bridging, and top is certainly
Diagonal brace is arranged to both sides in center, it is ensured that the overall stability of frame body.During formwork erection, reinforcing bar binding, concrete placings,
Frame body is monitored, discovery has displacement to be adjusted in time.
3.5 template constructs, installation
Since broken line type concrete exterior wall has batter post, beam, broken line plate, negative ridge, positive ridge, causing template to be laid with cannot be according to routine
Method carries out, and will cause the waste of template, flitch like that, so that construction cost increases.When template construct, according to the template of in-depth
Drawing carries out accurate setting-out in template, and each piece of template of each broken line plate is numbered, and mosaic part will be with section
Saving is principle, it is desirable that blanking is accurate, size is correct, using all leftover pieces, and the big big use of material, the small small use of material.
When template is installed, column, the beam forms between multispan broken line plate need to be first installed, this part-structure position and absolute altitude are not easy
Control, need to directly measure according to the control line and absolute altitude of lower floor, according to code requirement arch camber in the middle part of beam slab.Broken line template die plate
It installs, girder usesSteel pipe is laid with, and makes broken line type according to drawing, the spacing and mark required further according to scheme
Height is mounted at the top of support frame in upright bar.45 × 95mm flitch secondary beam is laid on girder steel pipe, then spacing 200mm is laid with
15mm thickness glued board, fixation as required between glued board and flitch, flitch and steel pipe.
For convenient for broken line type exterior wall concrete placings, to reinforcing bar binding after, it is pre-buried in broken line plate according to layout design
10 steel bar end@900 × 900, at the same it is pre-buried18 soil font reinforcing bars, in order to set up interim steel pipe protective frame.Steel pipe protective frame
Set up need it is solid and reliable, be convenient for concrete placings and subsequent external wall construction, protective frame upright bar spacing be not more than 2400mm, horizontal tube
Spacing is not more than 1500mm, can carry out broken line type exterior wall first time concrete placings after qualified by inspection.
3.6 reinforcement fabrications, installation
The reinforcing bar of broken line type concrete exterior wall and roofing carries out turning over sample and live blanking processing according to drawing in advance, and uses CAD
The groupware that charts carries out size review, and the broken line degree of reinforcing bar must be consistent with drawing, and otherwise the protective layer thickness of reinforcing bar will not
Easy to control, board bottom muscle, which is used, controls concrete cover thickness using reinforcing bar stirrup with Concrete seat pad, plate upper layer muscle, and cushion block and stirrup are vertical
Horizontal spacing is 1000mm, and blossom type is staggeredly arranged, and double steel bar mesh sheet is full bundle, to prevent concrete from gliding, two layers of reinforcing bar
No more than 800mm, the steel fabric sheet that mesh is 20 × 20mm is bound the intermediate spacing that is all made of of net.
3.7 concretings, maintenance
Concreting avoids the rainy day from constructing, to ensure broken line type concrete exterior wall and roofing concrete placings construction quality and safety.
Concrete uses commerical ready-mixed concrete, and strict control is marched into the arena concrete mix and the slump.Concrete plate thickness control is carried out before pouring
Standard point processed, design thickness and the plate thickness to guarantee concrete are uniform.Broken line type concrete exterior wall and roofing, which pour concrete, must special messenger
Be responsible for, unified command is coordinated, since concrete placings amount is big, and be broken line type, pouring construction difficulty is big, my project management department and designing unit
It links up, in the case where approving by designing unit, requires to set the joints of concrete projects of broken line type concrete exterior wall and roofing according to scheme
At the inner corner trim of folded plate, triangular form inclined-plane is first poured, concrete at construction joint is carried out after concrete strength is met the requirements to pick chisel, is then used
Water cleans up, and goes stone concrete to carry out connecing slurry with same label, then pours the above broken line type concrete exterior wall of inner corner trim and roofing concrete.It pours
It is poured upwards since broken line type exterior wall bottom edge from bottom to top when concrete, first pours broken line type exterior wall two sides, finally poured top, adopt
It being vibrated with poker vibrator, concrete is with smashing with vibration, and vibration point uniformly, pull out slowly by fast insert, until the unobvious sinking in surface, no
Until bubble occur and glowing mortar, to ensure the density of casting and compacting of concrete.Strict control concrete slump when pouring, broken line type
Exterior wall two sides and roofing sun ridge control respectively, and since the two sides gradient is larger, concrete slump is answered smaller.Broken line type roofing concrete
The difficulty of construction for pouring opposite exterior wall is smaller, and roofing is pushed ahead with the progress that pours of exterior wall.But it is noted that broken line
The positive ridge of type roofing and exterior wall needs band line to modify, and checks the deviation of size.It first carries out just putting down after concrete vibration compacting, at the beginning of concrete
Carry out second plastering, covering maintenance after solidifying before final set again.
The construction of broken line type concrete exterior wall and roofing is many-sided by high-rise working, gradient size, the variation of type shape and groove etc.
Influence, formwork and casting concrete, concrete curing are relatively difficult.Since the broken line plate gradient is not easy greatly water storage, surface in addition
Product is big, and dehydration fastly and personnel's reasons such as watering difficulty up and down, therefore need to especially carry out maintenance work.In the broken line plate for having poured concrete
On, concrete surface moisture state is kept using gunnysack or carpet cloth water seasoning, curing time is no less than 7 round the clock, maintenance
Period forbids upper people and carries out operation on it, carries out demoulding after reaching concrete strength.
3.8 demoulding
Form bracing system is removed after concrete strength reaches 100%, when dismounting adhere to " first prop up tear open afterwards, rear branch it is first
Tear open " principle, from top to bottom, successively carry out, material is forbidden to forbid to prize firmly using crowbar, must not break from eminence throwing when dismounting
The corner angle on bad concrete surface, after dismounting, material should be stacked neat by different cultivars, specification classification.
4. mass control and finished product protection
During broken line type concrete exterior wall and roofing construction, it is necessary to strictly press " construction quality during concrete engineering acceptance specification "
(GB50204-2015) requirement carry out construction and inspection of quality, the dominant item of the subdivisional works such as template, reinforcing bar, concrete with
The inspection of quality of general data has to comply with code requirement.
4.1 template lofts will reduce the piece quantity of plate face to the greatest extent, while ensure geometric dimension, broken line rate and bright and clean
Degree, meets design requirement.
4.2 broken line type templates should place steadily, to handle with care in construction, prevent modification；To guarantee appearance, prevent
Spillage, formwork edge joint are connected using ribbet, and side board and bottom plate, side board and side board seam paste single side paper self-adhesive tape, it is ensured that template
Piece quality.
It to be carried out by program when 4.3 form removable, and the release agent of brushing in time, forbid to be tapped with sledgehammer or crowbar prizes mould firmly
Plate.
4.4 reinforcement detailing emphasis consider different nodes cutting length and broken line rate, splice position, the lap of splice,
Anchorage length, end crotch etc..
The positioning of 4.5 reinforcing bars and protective layer are combined using Concrete seat pad and reinforcing bar stirrup, control thickness of protection tier.
4.6 in order to prevent concrete structure and component there is crack, to control the match ratio and slump of concrete, reinforce vibration
Pound the maintenance work of concrete.
5. safety measure
5.1 set up supporting steel pipe scaffold, operation layer by " construction fastener type steel pipe scaffold act of technique for security "
Floor surrounding will take guard rail and safety net, it is ensured that protection is in place.
5.2 all electricity consumption facilities will be by regulation wiring, and installs earth leakage protective device, carries on construction work at night, it is necessary to have enough
Illumination, various power supply line application insulated wires do not allow to be directly anchored on reinforcing bar.
The combustible materials such as 5.3 templates will keep fire away stacking, and be equipped with fire-fighting equipment.
5.4 construction sites will send full-time security official and shift electrician, and inspection implements safety measure, finds the problem and entangle in time
Just.
The connected construction technology of engineering multispan broken line type concrete exterior wall and roofing in the present invention, has summed up broken line type concrete structure
And component construction method, the deficiency in previous construction is overcome, template construct is simple, size is accurate, reinforcing is convenient, component broken line
Rate controls in place, and concrete impression quality is good, and provides reference value for the construction of similar engineering.
Claims (5)
- The construction method of concrete structure 1. a kind of broken line type exterior wall is connected with roofing, characterized by the following steps:CAD setting-out → field lofting → measurement and positioning → template support frame body sets up → template construct, installation → reinforcement fabrication, peace Dress → broken line type exterior wall first time concrete placings, maintenance → construction joint pick chisel, second of concrete of cleaning → broken line type exterior wall and roofing pours It builds, maintenance → demoulding；Wherein:The template support frame body is set up, and concrete operations are as follows:It carries out frame body according to the position line of support frame system and absolute altitude to set up, broken line type exterior wall support frame every upright bar absolute altitude of system It is all different, symmetrical as center both sides using broken line, upright bar vertically and horizontally spacing 800mm, bar of sweeping the floor is away from ground 200mm, horizontal distance between tie rods No more than 1500mm, bottom of upright rod makees backing plate with 50mm solid wood；Upright bar, horizontal knock-off joint are staggered no less than 1 across being all made of Joint fastener connection is forbidden using overlap joint, and supporting frame is horizontal, vertical direction is respectively provided with vertically and horizontally bridging, and top is from center Diagonal brace is arranged to both sides in position, it is ensured that the overall stability of frame body；During formwork erection, reinforcing bar binding, concrete placings, to frame Body is monitored, and discovery has displacement to be adjusted in time；The template construct, installation, concrete operations are as follows:Since broken line type concrete exterior wall has batter post, beam, broken line plate, negative ridge, positive ridge, cause template laying cannot be conventionally It carries out, will cause the waste of template, flitch like that, so that construction cost increases；When template construct, according to the template full-page proof of in-depth Figure carries out accurate setting-out in template, and each piece of template of each broken line plate is numbered, and mosaic part will be to save Principle, it is desirable that blanking is accurate, size is correct, using all leftover pieces, the big big use of material, the small small use of material；When template is installed, column, the beam forms between multispan broken line plate need to be first installed, this part-structure position and absolute altitude be not easily-controllable System, need to directly measure according to the control line and absolute altitude of lower floor, according to code requirement arch camber in the middle part of beam slab；Broken line template die plate branch If girder usesSteel pipe is laid with, and makes broken line type according to drawing, the spacing and mark required further according to scheme Height is mounted at the top of support frame in upright bar；45 × 95mm flitch secondary beam is laid on girder steel pipe, then spacing 200mm is laid with 15mm thickness glued board, fixation as required between glued board and flitch, flitch and steel pipe；For convenient for broken line type exterior wall concrete placings, to reinforcing bar binding after, it is pre-buried in broken line plate according to layout designSteel Muscle head@900 × 900, at the same it is pre-buriedSoil font reinforcing bar, in order to set up interim steel pipe protective frame；Steel pipe protective frame is taken If need to be solid and reliable, it be convenient for concrete placings and subsequent external wall construction, protective frame upright bar spacing is not more than 2400mm, horizontal tube spacing No more than 1500mm, broken line type exterior wall first time concrete placings can be carried out after qualified by inspection；The reinforcement fabrication, installation, concrete operations are as follows:The reinforcing bar of broken line type concrete exterior wall and roofing carries out turning over sample and live blanking processing according to drawing in advance, and is charted using CAD The groupware carries out size review, and the broken line degree of reinforcing bar must be consistent with drawing, and otherwise the protective layer thickness of reinforcing bar will not be easily-controllable System, board bottom muscle, which is used, controls concrete cover thickness using reinforcing bar stirrup with Concrete seat pad, plate upper layer muscle, and cushion block and stirrup are vertically and horizontally Spacing is 1000mm, and blossom type is staggeredly arranged, and double steel bar mesh sheet is full bundle, to prevent concrete from gliding, in two layers of steel mesh Between be all made of spacing no more than 800mm, the steel fabric sheet that mesh is 20 × 20mm is bound；The broken line type exterior wall first time concrete placings, maintenance → construction joint pick chisel, cleaning → broken line type exterior wall and roofing second Secondary concrete placings, maintenance, concrete operations are as follows:Concreting avoids the rainy day from constructing, and concrete uses commerical ready-mixed concrete, and strict control, which is marched into the arena, concrete mix and collapses Degree of falling carries out concrete strip thickness control standard point before pouring, design thickness and the plate thickness to guarantee concrete are uniform；Broken line type concrete Exterior wall and roofing, which pour concrete, must have special messenger to be responsible for, unified command coordination, since concrete placings amount is big, and be broken line type, by broken line The joints of concrete projects of type concrete exterior wall and roofing is located at the inner corner trim of folded plate, triangular form inclined-plane is first poured, after concrete strength is met the requirements Concrete at construction joint is carried out to pick chisel, then washes with water clean, and goes stone concrete to carry out connecing slurry with same label, then pour inner corner trim with Upper broken line type concrete exterior wall and roofing concrete；It is poured upwards since broken line type exterior wall bottom edge from bottom to top when pouring concrete, first pours broken line type exterior wall two sides, finally pour Top is built, is vibrated using poker vibrator, concrete is with smashing with vibration, and vibration point uniformly, pull out slowly by fast insert, until surface is unknown Aobvious sinking, until not occurring bubble and glowing mortar, to ensure the density of casting and compacting of concrete；Strict control concrete collapses when pouring Degree, broken line type exterior wall two sides and roofing sun ridge control respectively, and since the two sides gradient is larger, concrete slump is answered smaller；Broken line The difficulty of construction for pouring opposite exterior wall of type roofing concrete is smaller, and roofing is pushed ahead with the progress that pours of exterior wall；But It is noted that the positive ridge of broken line type roofing and exterior wall needs band line to modify, and check the deviation of size；It is first carried out after concrete vibration compacting It is just flat, carry out second plastering, covering maintenance before final set again after concrete initial set；Maintenance work need to be especially carried out, on the broken line plate for having poured concrete, is kept using gunnysack or carpet cloth water seasoning Concrete surface moisture state, curing time are no less than 7 round the clock, forbid upper people during maintenance and carry out operation on it, reach Demoulding is carried out after concrete strength；The demoulding, concrete operations are as follows:Form bracing system is removed after concrete strength reaches 100%, according to " first prop up tear open afterwards, rear branch is first torn open " when dismounting Principle from top to bottom, successively carries out, and material is forbidden to forbid to prize firmly using crowbar, must not destroy concrete table from eminence throwing when dismounting The corner angle in face, after dismounting, material should be stacked neat by different cultivars, specification classification.
- The construction method of concrete structure 2. broken line type exterior wall according to claim 1 is connected with roofing, it is characterised in that: The CAD setting-out, concrete operations are as follows: the broken line degree of broken line type exterior wall and position are controlled by the position of support frame, folding Line template is abutted and is connect with support girder, and support girder is abutted and connect with support girder, therefore is wanted to setting up for support frame Arrangement, calculating meticulously；In order to guarantee template broken line degree, to the position of each upright bar and broken line type rod piece before the setting up of support frame Set, absolute altitude carries out meticulous arrangement, calculate, by means of CAD drawing the groupware carry out rod piece elevation carrection, reinforcing bar arrangement, plate Muscle blanking, template and axial dimension review.
- The construction method of concrete structure 3. broken line type exterior wall according to claim 1 is connected with roofing, it is characterised in that: The field lofting, concrete operations are as follows:Broken line type concrete exterior wall and roofing are before supporting frame is set up, it is necessary to could implement after being sufficiently ready work at the scene, So it is also difficult point that the absolute altitude of support frame and batter post that carpenter sets up and positioning, which are the emphasis for first having to solve when construction, it is specific to mark High and positioning cooperates carpenter to complete by technical staff by the multiple measurement and the positioning of projection line of bench mark；Before construction, The line setting of bottom is particularly important, and project management department technical staff requires carpenter teams and groups first to show by the gross data of CAD setting-out Practical setting-out, that is, after support frame is set up, first by the standard of 8 span centres across i.e. from western second eastwards across it is oblique Column, beam, Side fascia formwork erection in place, then by field technician and design drawing, the data school repeatedly of CAD setting-out It, can large-area construction after confirmation field lofting accurately meets construction requirement to rear.
- The construction method of concrete structure 4. broken line type exterior wall according to claim 1 is connected with roofing, it is characterised in that: The measurement and positioning, concrete operations are as follows: according to CAD full-size drawing and construction drawing, putting to one layer of axis, component, absolute altitude Line, positioning, levelling, broken line wallboard and roofing position should have axis, sideline, control line, be released according to template special construction plan " cross " position line of support frame system upright bar, and each spots localization unwrapping wire is checked, control point is drawn and is made a record, Ensure tolerance in specification prescribed limit.
- The construction method of concrete structure 5. broken line type exterior wall according to claim 1 is connected with roofing, it is characterised in that: Material prepares as follows: formwork bracing system frame body supervisor usesSteel pipe, template are closed using 15mm thickness clad can wood glue Plate, girder use 45 × 95mm flitch, and frame body steel pipe, fastener, adjustable bracket, template, flitch should carry out conscientiously when marching into the arena Check and select, steel pipe, fastener march into the arena after using the live sampling inspection of preceding progresss, reused after detection qualification, to corroding Seriously, the certified products material for forbidding to select specification unified using, template and flitch of slight crack, depression defect.
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