CN105951842B - Reversed beam styrofoam fetal membrane construction method under raft plate - Google Patents

Reversed beam styrofoam fetal membrane construction method under raft plate Download PDF

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Publication number
CN105951842B
CN105951842B CN201610385482.6A CN201610385482A CN105951842B CN 105951842 B CN105951842 B CN 105951842B CN 201610385482 A CN201610385482 A CN 201610385482A CN 105951842 B CN105951842 B CN 105951842B
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styrofoam
construction
concrete
bar
basic
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CN105951842A (en
Inventor
赵迎晨
宋宝国
李国宁
陈宝贵
乔学萍
孙健
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NINGXIA CONSTRUCTION ENGINEERING GROUP Co Ltd
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NINGXIA CONSTRUCTION ENGINEERING GROUP Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/02Foundation pits

Abstract

Reversed beam styrofoam fetal membrane construction method, belongs to technical field of building construction under raft plate.The process of the construction method includes:Surveying setting-out earth excavation casting concrete bed course is built basic periphery brick fetal membrane and inner face waterproof construction fish tail and waterproof layer of plastering by laying bricks or stones and constructed basic beam steel banding fixed finished product styrofoam Base isolation system reinforcing bar colligation basis beam slab concrete placings and maintenance.Compared with conventional port excavates operating type construction, the present invention has construction technology simple and efficient, and efficiency of construction is high, improves construction quality, effectively reduces construction cost.

Description

Reversed beam styrofoam fetal membrane construction method under raft plate
Technical field
The invention belongs to building engineering construction field, more particularly to reversed beam styrofoam fetal membrane construction party under a kind of raft plate Method.
Background technology
The lower reversed beam construction in basis mainly excavates operation using point type in construction at present:Foundation beam plate part is excavated To designed elevation, casting concrete bed course, build beam brick fetal membrane by laying bricks or stones, plaster, construction waterproof, construction waterproof protective layer, colligation basis Beam reinforced steel bar, pour foundation beam board concrete;Point type is excavated, concrete cushion is poured, brick fetal membrane is built by laying bricks or stones, brick fetal membrane is plastered, prevented Water difficulty of construction is big, and quality is difficult to control.
The content of the invention
The present invention be directed to the lower reversed beam construction in existing basis mainly to excavate deficiency existing for operating type using point type A kind of place, there is provided reversed beam styrofoam fetal membrane construction method under raft plate.
It is the technical scheme is that such:It is that following reversed beam bed course bottom absolute altitude is according to a large area spoil Side, casting concrete bed course, do waterproof layer on bed course, pea gravel concreten protective layer, successively colligation reversed beam reinforcing bar, between reversed beam space Fetal membrane is done with solid styrofoam, casting concrete forms.
Reversed beam styrofoam fetal membrane construction method under raft plate, the process of the construction method include:Surveying setting-out-earth excavation- Casting concrete bed course-build by laying bricks or stones basic periphery brick fetal membrane and inner face are plastered-waterproof construction-fish tail and waterproof layer construction-basis Beam steel bar colligation-fixation finished product styrofoam-Base isolation system reinforcing bar colligation-basic beam slab concrete placings and maintenance.
Described earth excavation process is:Pit earthwork uses earthmoving machinery stage excavation, and backacter cheats upper operation, Bottom of foundation ditch 20~30cm of indwelling soil layers progress manual cleaning is levelling, excavation slope gradient system as defined in soil property species and specification Number slope.
Described casting concrete bed course process is:1st, according to axial line control stake by outer side bar axis pilot measurement to foundation ditch bottom Face, bed course outer edge is determined according to outer side bar axis, the determination of bed course outer edge is considered as the revetment thickness of side bar, screed-coat Thickness, the thickness of waterproof layer, the thickness of fish tail and waterproof layer, and should be greater than 100 ㎜ on the outside of revetment;2nd, bed course side form uses 100 ㎜ The flitch of wide array punching block or 5 × 10 ㎝, fixed with the ㎜ of ¢ 12 reinforcing bar, then pour into a mould concrete cushion.
Described build by laying bricks or stones basic periphery brick fetal membrane and inner face plastering process be:1st, pilot measurement control is answered after cushion construction is complete Stake axis simultaneously carries out the unwrapping wire of revetment;2nd, the ㎜ thickness brick mold revetments of foundation ditch surrounding 240, using 240*120*90 ㎜ porous bricks, MU10 masonry of cement mortar is highly high with raft plate top mark;3rd, 20 ㎜ thickness 1 are used on the inside of brick mold:2.5 cement mortar screedings are cloudy The circular arc that radius is 5 ㎝ is smeared at angle.
Described waterproof construction process is:1st, require that paving construction temperature is not less than 5 degree;2nd, the full bonding of coil waterproof layer Construction, long side lap width cannot be less than 100mm, and the short side lap of splice cannot be less than 150 ㎜, if waterproof layer is double-deck, on The seam of lower two layers of adjacent two width coiled material should stagger 1/3 breadth, and two layers of coiled materials must not be mutually perpendicular to paving.It is pre- at the top of revetment Stay 300 ㎜ width to be laid at the top of revetment, and built by laying bricks or stones with one layer of dry-laid or low grade mortar, carry out the protection that waterproof layer gets rid of head; 3rd, coil waterproof layer uses 4 ㎜ SBS waterproof rolls.
Described foundation beam steel flxer sequence is:1st, according to the lower reversed beam sideline in construction drawing ejection basis;
2nd, to put stirrup → wear the cage bar → picture stirrup position line → tied framework → removing supporterses by the quantity calculated in place Skeleton, skeleton upper longitudinal bar use hitch colligation with stirrup, and colligation should make skeleton not run-off the straight, loosen, indulge firmly, in place The protective layer cushion block of beam muscle is padded before transverse beam tendons skeleton is in place, cushion block uses 1:2.5 cement mortar make, spacing 1000 ㎜;3rd, for convenience of beam steel bar colligation, door opening formula temporary support can be set up(Set up using steel pipe, interim frame is higher than deck-molding 200 ㎜), after treating beam muscle colligation, support frame is removed, beam is in place.
Described fixation finished product styrofoam process is:1st, before styrofoam construction, it is necessary to according to every piece of basis in design drawing Space between reversed beam, styrofoam length and width, thick design are carried out, draws arrangement figure;Styrofoam fabrication plan, committee are proposed according to arrangement figure Support styrofoam processing factory is processed;2nd, the full coat bonding mucilage on basic fish tail and waterproof layer, arranged figure by styrofoam and pasted and gathered Benzene plate, adjacent styrofoam side also full coat bonding mucilage and jam-packed, extrusion rubber cement is struck off with perching knife, if reversed beam height is higher, is gathered Benzene plate should be layered fissure of displacement stickup, and edge joint position must be closed with rubber cement;3rd, inorganic mortar full coat can also be used for enhancing styrofoam intensity One time;4th, after styrofoam has pasted 24 hours, next process can be carried out.
Described Base isolation system steel flxer sequence is:1. before colligation sole plate reinforcing bar, spacing is pressed at the top of styrofoam 1000 ㎜ lay the wide bar shapeds of the ㎜ of > 300 and discard wood glue plate as steel bar horse-shaped bench and the backing plate of cushion block of concrete bar protective layer, prevent horse Stool is pierced into styrofoam, and cushion block of concrete bar protective layer is arranged on wood glue plate by the ㎜ quincunxs of spacing 1000;2nd, the complete raft slab of colligation After muscle, you can raft slab muscle, reversed beam reinforcing bar and split heads reinforcing bar is formed one can be spread by the space structure of temporary construction load Temporary road can be used as after bamboo frame plate, to facilitate the progress of subsequent handling.
Described basic beam slab concrete placings and maintenance process are:1st, reinforcing bar concealment acceptance and styrofoam loose tool are fixed to check and accept and closed , can casting concrete after lattice;2nd, the construction method that concrete construction is conveyed using commerical ready-mixed concrete, delivery pump, concrete are mixed The slump of compound is the ㎜ of 160mm~180, is poured using material distributing machine, poker vibrator and flat vibrator vibrate;3rd, raft The careful vibrated concrete of 30mm diameter internal vibration rods is preferably used at plate, basic reversed beam styrofoam loose tool surrounding, vibrating spear is inserted Enter spacing 300mm.It must be vibrated by regulation spacing, must not leakage.When vibrating, vibrating spear must not touch styrofoam, raft plate top surface Vibrated using vibration board and just levelling;4th, concreting should be poured along the mode that building longitudinal direction tack promotes, First beam, raft plate are answered when pouring, adjacent beams answer symmetrical blanking to be poured;5th, concreting is watered and supported in time in complete 12 hours Shield, curing time are no less than 14 days, and to ensure concrete quality, scene sets the concrete curing that special messenger carries out this engineering, prevented Concrete early stage dehydration and desciccation crack phenomenon occur.
The present invention has following remarkable result:
1st, excavation of foundation pit is molded using large area, quick construction, efficiently.
2nd, styrofoam fetal membrane construction raft plate under reversed beam due to using styrofoam (EPS) as lower reversed beam side form and raft plate bottom Mould, construction cost is reduced, it is accelerating construction progress, easy to operate.
3rd, construction of waterproof layer is easy, and easy control waterproof construction quality, quality of waterproof layer significantly improves.
4th, the inventive method finished product styrofoam perfect, styrofoam tire when can effectively prevent the concrete from pouring into a mould that is fixedly mounted measure Mould shifts, and raft foundation Forming Quality is good.
5th, reversed beam reinforcing bar under the first colligation of the present invention, fetal membrane of constructing afterwards, improves operating environment, is effectively improved reinforcing bar and ties up Efficiency is pricked, artificial, accelerating construction progress is saved, ensure that reinforcing bar colligation quality.
Brief description of the drawings
Fig. 1 is the process flow chart of construction method of the present invention.
Fig. 2 is construction method face structural representation of the present invention.
Fig. 3 is that styrofoam of the present invention installs fixed structure schematic diagram.
As shown in Figure 2 and Figure 3:1- brick fetal membranes, 2- screed-coats, 3- waterproof layers, 4- fish tail and waterproof layers, 5- rubber cements, 6- waterproofs volume Material, 7- blinding layers, beam steel, 9- styrofoams, 10- sole plate reinforcing bars, 11- covers to reinforcement is turned under 8-.
Embodiment
The embodiment of the present invention is elucidated referring to the attached drawing:
As shown in Figure 1:The working procedure of the inventive method is:Surveying setting-out-earth excavation-casting concrete bed course-block - waterproof construction-fish tail and waterproof layer the construction-basic beam steel bar colligation-of plastering of basic periphery brick fetal membrane and inner face is built to be fixed into Product styrofoam-Base isolation system reinforcing bar colligation-basic beam slab concrete placings and maintenance.
As shown in Figure 2:Construction method face structure reflection of the present invention:Brick fetal membrane, screed-coat, waterproof layer, fish tail and waterproof layer, Rubber cement, waterproof roll, blinding layer, under turn over beam steel, styrofoam, sole plate reinforcing bar, cover to reinforcement and constructed with this method Specific construction constructional aspect and position after completion.
As shown in Figure 3:Styrofoam of the present invention installation fixed structure reflect styrofoam, under turn over beam steel and fish tail and waterproof layer Specific construction constructional aspect and position after this method construction completion.
In order to avoid manual site cuts coarse, gap is uneven between plate and plate, influences bonding uniformly and fastness.Polyphenyl Before plate construction, it is necessary to according to space between every piece in design drawing basic reversed beam, carry out styrofoam length and width, thick design, draw arrangement Figure.Styrofoam fabrication plan is proposed according to arrangement figure, commission styrofoam processing factory is processed.
After styrofoam is transported to scene, to be stacked respectively according to specification size, and have clearly material mark.Transported again during stickup To operating area, operating personnel is discharged according to arrangement figure, is paid attention to handling with care during carrying, not damaged styrofoam.Polyphenyl Plate is being stored and waterproof fireproofing is should be noted that in taping process.
The full coat bonding mucilage on basic fish tail and waterproof layer, arrange figure by styrofoam and paste styrofoam, adjacent styrofoam side Also full coat bonding mucilage and jam-packed, extrusion rubber cement are struck off with perching knife in face.If reversed beam height is higher, styrofoam should be layered the fissure of displacement and glue Patch.Edge joint position must be closed with rubber cement.Also can be one time with inorganic mortar full coat for enhancing styrofoam intensity.Styrofoam has pasted 24 After hour, next process can be carried out.
Applicant is in Ningxia east new city work of renovating shantytowns Min Hui gardens project(Second phase)Engineering, to 20#, 30#, 34#, 35#, 26#, 37#, 38#, 39#, 40#, 41#, 42#, 43#, 44# building are constructed using the inventive method, construction area 160,000 Square meter, shear wall structure, base form are cast-in-situ bored pile raft foundation.Excavation of foundation pit is molded using a large area, construction It is convenient.It is obvious using reversed beam under styrofoam fetal membrane construction raft plate, reduction construction cost, accelerating construction progress, waterproof construction quality Improve.

Claims (1)

1. reversed beam styrofoam fetal membrane construction method under raft plate, it is characterised in that the process of the construction method includes:
Surveying setting-out-earth excavation-casting concrete bed course-build by laying bricks or stones basic periphery brick fetal membrane and inner face plaster-waterproof applies Work-fish tail and waterproof layer construction-basic beam steel bar colligation-fixation finished product styrofoam-Base isolation system reinforcing bar colligation-basic beam slab concrete pours Build and conserve;Described earth excavation process is:Pit earthwork uses earthmoving machinery stage excavation, and backacter is made on hole Industry, bottom of foundation ditch 20~30cm of indwelling soil layers progress manual cleaning is levelling, excavation slope slope as defined in soil property species and specification Spend coefficient slope;Described casting concrete bed course process is:(1)According to axial line control stake by outer side bar axis pilot measurement to foundation ditch Bottom surface, bed course outer edge is determined according to outer side bar axis, the determination of bed course outer edge is considered as revetment thickness, the screed-coat of side bar Thickness, thickness, the thickness of fish tail and waterproof layer of waterproof layer, and should be greater than 100 ㎜ on the outside of revetment;(2)Bed course side form uses The flitch of 100mm wide arrays punching block or 5 × 10 ㎝, fixed with ¢ 12mm reinforcing bar, then pour into a mould concrete cushion;Described block Building basic periphery brick fetal membrane and inner face plastering process is:(1)Pilot measurement control stake axis is answered after cushion construction is complete and is protected The unwrapping wire of wall;(2)Foundation ditch surrounding 240mm thickness brick mold revetments, using 240*120*90mm porous bricks, MU10 cement bonded sands grout Build, it is highly high with raft plate top mark;(3)20 ㎜ thickness 1 are used on the inside of brick mold:2.5 cement mortar screedings, radius is smeared at inner corner trim For 5 ㎝ circular arc;Described waterproof construction process is:(1)It is required that paving construction temperature is not less than 5 degree;(2)Coil waterproof layer is used Full bonding construction, long side lap width cannot be less than 100mm, and the short side lap of splice cannot be less than 150 ㎜, if waterproof layer is bilayer When, the seam of upper and lower two layers of adjacent two width coiled material should stagger 1/3 breadth, and two layers of coiled materials must not be mutually perpendicular to paving, in revetment Top is reserved 300 ㎜ width and is laid at the top of revetment, and is built by laying bricks or stones with one layer of dry-laid or low grade mortar, carries out waterproof layer and gets rid of head Protection;(3)Coil waterproof layer uses 4 ㎜ SBS waterproof rolls;Described foundation beam steel flxer sequence is:(1)According to construction drawing Word bomb goes out reversed beam sideline under basis;(2)Quantity by calculating puts stirrup → wear the cage bar → picture stirrup position line → colligation bone Frame → removing supporterses skeleton in place, skeleton upper longitudinal bar use hitch colligation with stirrup, and colligation should be such that skeleton does not send out firmly, in place It is raw to tilt, loosen, the protective layer cushion block of beam muscle is padded before vertically and horizontally beam tendons skeleton is in place, cushion block uses 1:2.5 cement mortar Make, the ㎜ of spacing 1000;Described fixation finished product styrofoam process is:(1)Before styrofoam construction, it is necessary to according in design drawing Space between every piece of basic reversed beam, styrofoam length and width, thick design are carried out, draws arrangement figure;Styrofoam processing is proposed according to arrangement figure Plan, commission styrofoam processing factory are processed;(2)Full coat bonding mucilage, is arranged by styrofoam on basic fish tail and waterproof layer Figure pastes styrofoam, and also full coat bonding mucilage and jam-packed, extrusion rubber cement are struck off with perching knife for adjacent styrofoam side, if reversed beam height Higher, styrofoam should be layered fissure of displacement stickup, and edge joint position must be closed with rubber cement;Described Base isolation system steel flxer sequence is: Before colligation sole plate reinforcing bar, at the top of styrofoam by the ㎜ of spacing 1000 lay the wide bar shaped of > 300 ㎜ discard wood glue plate as The backing plate of steel bar horse-shaped bench and cushion block of concrete bar protective layer, split heads is prevented to be pierced into styrofoam, cushion block of concrete bar protective layer presses spacing 1000 ㎜ quincunxs are arranged on wood glue plate;Described basic beam slab concrete placings and maintenance process are:(1)Reinforcing bar concealment acceptance and polyphenyl , can casting concrete after plate loose tool fixes acceptance(check);(2)Concrete construction is conveyed using commerical ready-mixed concrete, delivery pump Construction method, the slump of concrete mix are the ㎜ of 160mm~180, are poured using material distributing machine, poker vibrator and flat board Formula vibrator vibrates;(3)Preferably carefully shaken using 30mm diameter internal vibration rods at raft plate, basic reversed beam styrofoam loose tool surrounding Smash concrete, vibrating spear insertion spacing 300mm, it is necessary to vibrated by regulation spacing, must not leakage, when vibrating, vibrating spear must not touch And styrofoam, raft plate top surface application vibration board vibrate and just it is levelling;(4)Concreting should push away along building longitudinal direction tack The mode entered is poured, and first beam, raft plate are answered when pouring, and adjacent beams answer symmetrical blanking to be poured;(5)Concreting complete 12 Timely water seasoning in hour, curing time are no less than 14 days.
CN201610385482.6A 2016-06-03 2016-06-03 Reversed beam styrofoam fetal membrane construction method under raft plate Active CN105951842B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109958187A (en) * 2019-04-04 2019-07-02 中国十七冶集团有限公司 One kind turning over beam foundation bottom plate Roofing slab construction method
CN111719577B (en) * 2020-05-22 2021-11-09 中国建筑第八工程局有限公司 Construction method of building foundation
CN113152882A (en) * 2021-04-29 2021-07-23 中国二十二冶集团有限公司 Mixed construction method for basement exterior wall formwork and hot-laid waterproof coiled material

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CN102535493A (en) * 2012-01-12 2012-07-04 江苏省淮海建设集团有限公司 Method for constructing inverted type foundation beam
CN203440967U (en) * 2013-09-05 2014-02-19 江苏南通三建集团有限公司 Large-span cast-in-place prestressed concrete polystyrene board filling body beam and slab structure
CN204626438U (en) * 2015-02-16 2015-09-09 中工国际工程股份有限公司 One is pushed up flat-topped ridge board-like cavity raft foundation component

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ES2281212B1 (en) * 2002-11-18 2008-08-16 Sistemas Industrializados Barcons, S.L. IMPROVEMENTS IN THE CONSTRUCTION SYSTEMS OF STRUCTURES OF CONCRETE CONCRETE OR OTHER MATERIAL THROUGH MODULAR AND INTEGRAL HANDLING OF HIGH PRECISION.

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Publication number Priority date Publication date Assignee Title
CN102535493A (en) * 2012-01-12 2012-07-04 江苏省淮海建设集团有限公司 Method for constructing inverted type foundation beam
CN203440967U (en) * 2013-09-05 2014-02-19 江苏南通三建集团有限公司 Large-span cast-in-place prestressed concrete polystyrene board filling body beam and slab structure
CN204626438U (en) * 2015-02-16 2015-09-09 中工国际工程股份有限公司 One is pushed up flat-topped ridge board-like cavity raft foundation component

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