CN105951842A - Raft lower reversed beam polystyrene board caul construction method - Google Patents
Raft lower reversed beam polystyrene board caul construction method Download PDFInfo
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- CN105951842A CN105951842A CN201610385482.6A CN201610385482A CN105951842A CN 105951842 A CN105951842 A CN 105951842A CN 201610385482 A CN201610385482 A CN 201610385482A CN 105951842 A CN105951842 A CN 105951842A
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- styrofoam
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a raft lower reversed beam polystyrene board caul construction method, and belongs to the technical field of building construction. The construction method comprises the procedures of: surveying and setting out, earth excavation, casting of a concrete cushion layer, construction of brick caul around the outer periphery of a foundation and plastering of the inner surface, waterproof construction, construction of a waterproof protecting layer, binding of foundation beam reinforcements, fixation of a finished polystyrene board, binding of foundation raft reinforcements, concrete casting and curing of a foundation beam slab. Compared with a traditional dot type excavation construction mode, the raft lower reversed beam polystyrene board caul construction method is simple and fast, is high in construction efficiency, improves the construction quality, and effectively reduces the construction cost.
Description
Technical field
The invention belongs to building engineering construction field, particularly relate to reversed beam styrofoam fetal membrane construction method under a kind of raft plate.
Background technology
In construction at present, the lower reversed beam construction in basis mainly uses point type excavation operation: basis beam slab part is excavated to designed elevation, casting concrete bed course, builds beam brick fetal membrane by laying bricks or stones; plaster, construction waterproof, construction waterproof protective layer; colligation basis beam reinforced steel bar, pours foundation beam board concrete；Point type excavates, concrete cushion pours, brick fetal membrane is built by laying bricks or stones, brick fetal membrane is plastered, waterproof construction difficulty is big, and difficult quality is control.
Summary of the invention
The present invention be directed to the weak point that reversed beam construction under existing basis mainly uses point type excavation operating type to exist, it is provided that reversed beam styrofoam fetal membrane construction method under a kind of raft plate.
The technical scheme is that such: be that absolute altitude at the bottom of following reversed beam bed course is for according to large area earth excavation, a casting concrete bed course; waterproof layer, pea gravel concreten protective layer, successively colligation reversed beam reinforcing bar is done on bed course; doing fetal membrane with solid styrofoam between reversed beam space, casting concrete forms.
Reversed beam styrofoam fetal membrane construction method under raft plate, the operation of this construction method includes: surveying setting-out-earth excavation-casting concrete bed course-build by laying bricks or stones basis periphery brick fetal membrane and inner face plaster-waterproof construction-fish tail and waterproof layer construction-foundation beam reinforcing bar binding-fix finished product styrofoam-Base isolation system reinforcing bar binding-basis beam slab concrete placings and maintenance.
Described earth excavation operation is: pit earthwork uses earthmoving machinery stage excavation, the upper operation in backacter hole, and bottom foundation ditch, to carry out labor cleaning levelling for indwelling 20～30cm soil layer, and the gradient coefficient that excavation slope is specified by soil property kind and specification puts slope.
Described casting concrete bed course operation 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 the revetment thickness of side bar, the thickness of screed-coat, the thickness of waterproof layer, the thickness of fish tail and waterproof layer, and should be greater than surveying outside revetment 100；2, bed course side form uses 100 wide array punching blocks or the flitch of 5 × 10, fixes with the reinforcing bar of ￠ 12, then pours into a mould concrete cushion.
Described build basis periphery brick fetal membrane by laying bricks or stones and inner face plastering process is: after 1, cushion construction is complete, answer pilot measurement control stake axis and carry out the unwrapping wire of revetment；2, the thick brick loose tool revetment of foundation ditch surrounding 240, uses 240*120*90 porous brick, and MU10 masonry of cement mortar, highly with raft plate top mark height；3, use 20 thick 1:2.5 cement mortar screedings inside brick loose tool, at inner corner trim, smear into the circular arc that radius is 5.
Described waterproof construction operation is: 1, require that paving construction temperature is not less than 5 degree；2, coil waterproof layer is constructed by full bonding, long edge lap width cannot be less than 100mm, and the minor face lap of splice cannot be less than 150, if waterproof layer is double-deck, up and down the seam of the adjacent two width coiled materials of two-layer should stagger 1/3 fabric width, and two layers of coiled materials must not be mutually perpendicular to paving.Reserve 300 width at revetment top and be laid in revetment top, and build by laying bricks or stones by dry-laid one layer or low grade mortar, carry out waterproof layer and get rid of the protection of head；3, coil waterproof layer uses 4 SBS waterproof rolls.
Described foundation beam reinforcing bar binding operation is: 1, eject lower reversed beam sideline, basis according to construction drawing；
2, stirrup → wear the main muscle → picture stirrup position line → tied framework → removing supporters skeleton in place is put by the quantity calculated; skeleton upper longitudinal bar uses hitch colligation with stirrup; colligation should firmly, put in place; make skeleton not run-off the straight, loosen; the protective layer cushion block of beam muscle has been padded before vertically and horizontally beam muscles and bones frame is in place; cushion block uses 1:2.5 cement mortar to make, spacing 1000；3, for convenience of beam steel bar colligation, door opening formula temporary support (using steel pipe to set up, interim frame is higher than deck-molding 200) can be set up, after treating beam muscle colligation, remove bracing frame, beam is in place.
Described fixing finished product styrofoam operation is: 1, before styrofoam construction, it is necessary to according to space between in design drawing every piece basic reversed beam, carries out styrofoam length and width, thick design, draws arrangement figure；Propose styrofoam fabrication plan according to arrangement figure, entrust styrofoam processing factory to be processed；2, full coat bonding mucilage on the fish tail and waterproof layer of basis, pastes styrofoam, adjacent styrofoam side also full coat bonding mucilage jam-packed by styrofoam arrangement figure; extrusion rubber cement perching knife strikes off; if reversed beam height is higher, styrofoam should be layered the fissure of displacement and paste, and edge joint position must be closed with rubber cement；3, for strengthen styrofoam intensity also can be with inorganic mortar full coat one time；4, after styrofoam has pasted 24 hours, next process can be carried out.
Described Base isolation system reinforcing bar binding operation is: 1. before colligation sole plate reinforcing bar; wood glue plate is discarded as steel bar horse-shaped bench and the backing plate of cushion block of concrete bar protective layer by the bar shaped that spacing 1000 lay ＞ 300 is wide at styrofoam top; preventing split heads from thrusting in styrofoam, cushion block of concrete bar protective layer is arranged on wood glue plate by spacing 1000 quincunx；2, after colligation complete raft slab muscle, raft slab muscle, reversed beam reinforcing bar and split heads reinforcing bar can be made to form one can be by the space structure of temporary construction load, can be as temporary road after spreading bamboo frame plate, to facilitate the carrying out of subsequent handling.
Described basic beam slab concrete placings and maintenance operation be: after 1, reinforcing bar concealment acceptance and styrofoam loose tool fix acceptance(check), can casting concrete；2, concrete construction uses the construction method of commerical ready-mixed concrete, delivery pump conveying, and the slump of concrete mix is 160mm～180, uses material distributing machine to pour, and poker vibrator and flat vibrator vibrate；3, preferably using 30mm diameter internal vibration rod carefully vibrated concrete at raft plate, basis reversed beam styrofoam loose tool surrounding, vibrating spear inserts spacing 300mm.Must vibrate by prescribed distance, must not leak and shake.When vibrating, vibrating spear must not touch styrofoam, and raft plate top surface application vibration board vibrates and the most levelling；4, concreting should pour along the mode that building longitudinal direction tack advances, when pouring should first beam, raft plate, adjacent beams should pour in symmetrical blanking；5, water seasoning in time in complete 12 hours of concreting, curing time is no less than 14 days, and for guaranteeing concrete quality, scene sets special messenger and carries out the concrete curing of this engineering, prevents concrete dehydration in early days and desciccation crack phenomenon from occurring.
The present invention has a following remarkable result:
1, excavation of foundation pit uses a large area molding, quick construction, efficiently.
2, under styrofoam fetal membrane construction raft plate, reversed beam, owing to using styrofoam (EPS) as lower reversed beam side form and raft plate bed die, reduces construction cost, accelerating construction progress, easy and simple to handle.
3, construction of waterproof layer is easy, and easily control waterproof construction quality, quality of waterproof layer significantly improves.
4, the inventive method finished product styrofoam fixed installation measure is perfect, and styrofoam loose tool displacement when can effectively stop concrete to be poured into a mould, raft foundation Forming Quality is good.
5, reversed beam reinforcing bar under elder generation of the present invention colligation, fetal membrane of constructing afterwards, improve working environment, is effectively improved reinforcing bar binding efficiency, saves artificial, accelerating construction progress, it is ensured that reinforcing bar binding quality.
Accompanying drawing explanation
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 membrane, 2-screed-coat, 3-waterproof layer, 4-fish tail and waterproof layer, 5-rubber cement, 6-waterproof roll, 7-blinding layer, beam steel, 9-styrofoam, 10-sole plate reinforcing bar, 11-cover to reinforcement are turned under 8-.
Detailed description of the invention
The detailed description of the invention 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-build by laying bricks or stones basis periphery brick fetal membrane and inner face plaster-waterproof construction-fish tail and waterproof layer construction-foundation beam reinforcing bar binding-fix finished product styrofoam-Base isolation system reinforcing bar binding-basis beam slab concrete placings and maintenance.
As shown in Figure 2: construction method face structure of the present invention reflect: 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 this method construction completion after Specific construction constructional aspect and position.
As shown in Figure 3: styrofoam of the present invention install fixed structure reflect styrofoam, under turn over beam steel and fish tail and waterproof layer this method construction completion after Specific construction constructional aspect and position.
In order to avoid manual site cuts coarse, between plate and plate, gap is uneven, affects bonding uniform and fastness.Before styrofoam construction, it is necessary to according to space between in design drawing every piece basic reversed beam, carry out styrofoam length and width, thick design, draw arrangement figure.Propose styrofoam fabrication plan according to arrangement figure, entrust styrofoam processing factory to be processed.
After styrofoam is transported to scene, to stack respectively according to specification size, and have material mark clearly.Being transported to operating area during stickup again, operating personnel discharges according to arrangement figure, notes handling with care during carrying, does not damage styrofoam.Styrofoam in storage and taping process it should be noted that waterproof fireproofing.
Full coat bonding mucilage on the fish tail and waterproof layer of basis, pastes styrofoam, adjacent styrofoam side also full coat bonding mucilage jam-packed by styrofoam arrangement figure, and extrusion rubber cement perching knife strikes off.If reversed beam height is higher, styrofoam should be layered the fissure of displacement and paste.Edge joint position must be closed with rubber cement.Also can be with inorganic mortar full coat one time for strengthening styrofoam intensity.After styrofoam has pasted 24 hours, next process can be carried out.
Applicant is in new city work of renovating shantytowns Min Hui garden, Ningxia east project (the second stage of) engineering, to 20#, 30#, 34#, 35#, 26#, 37#, 38#, 39#, 40#, 41#, 42#, 43#, 44# building use the inventive method to construct, construction area 160,000 square meter, shear wall structure, base form is cast-in-situ bored pile raft foundation.Excavation of foundation pit uses a large area molding, constructs convenient.Using reversed beam under styrofoam fetal membrane construction raft plate, reduce construction cost, accelerating construction progress, waterproof construction quality significantly improves.
Claims (9)
1. reversed beam styrofoam fetal membrane construction method under raft plate, it is characterised in that the operation of this construction method includes:
Surveying setting-out-earth excavation-casting concrete bed course-build by laying bricks or stones basis periphery brick fetal membrane and inner face plaster-and waterproof construction-fish tail and waterproof layer construction-foundation beam reinforcing bar binding-fix finished product styrofoam-Base isolation system reinforcing bar binding-basis beam slab concrete placings and maintenance.
Construction method the most according to claim 1, it is characterized in that, described earth excavation operation is: pit earthwork uses earthmoving machinery stage excavation, the upper operation in backacter hole, bottom foundation ditch, to carry out labor cleaning levelling for indwelling 20～30cm soil layer, and the gradient coefficient that excavation slope is specified by soil property kind and specification puts slope.
Construction method the most according to claim 1; it is characterized in that; described casting concrete bed course operation 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 the revetment thickness of side bar, the thickness of screed-coat, the thickness of waterproof layer, the thickness of fish tail and waterproof layer, and should be greater than surveying outside revetment 100；(2) bed course side form uses 100 wide array punching blocks or the flitch of 5 × 10, fixes with the reinforcing bar of ￠ 12, then pours into a mould concrete cushion.
Construction method the most according to claim 1, it is characterised in that described build basis periphery brick fetal membrane by laying bricks or stones and inner face plastering process is: answer pilot measurement control stake axis and carry out the unwrapping wire of revetment after (1) cushion construction is complete；(2) the thick brick loose tool revetment of foundation ditch surrounding 240, uses 240*120*90 porous brick, and MU10 masonry of cement mortar, highly with raft plate top mark height；(3) use 20 thick 1:2.5 cement mortar screedings inside brick loose tool, at inner corner trim, smear into the circular arc that radius is 5.
Construction method the most according to claim 1, it is characterised in that described waterproof construction operation is: (1) requires that paving construction temperature is not less than 5 degree；(2) coil waterproof layer is constructed by full bonding; long edge lap width cannot be less than 100mm; the minor face lap of splice cannot be less than 150; if waterproof layer is double-deck; up and down the seam of the adjacent two width coiled materials of two-layer should stagger 1/3 fabric width, and two layers of coiled materials must not be mutually perpendicular to paving, reserves 300 width at revetment top and is laid in revetment top; and build by laying bricks or stones by dry-laid one layer or low grade mortar, carry out waterproof layer and get rid of the protection of head；(3) coil waterproof layer uses 4 SBS waterproof rolls.
Construction method the most according to claim 1, it is characterised in that described foundation beam reinforcing bar binding operation is: (1) ejects lower reversed beam sideline, basis according to construction drawing；(2) stirrup → wear the main muscle → picture stirrup position line → tied framework → removing supporters skeleton in place is put by the quantity calculated; skeleton upper longitudinal bar uses hitch colligation with stirrup; colligation should firmly, put in place; make skeleton not run-off the straight, loosen; the protective layer cushion block of beam muscle has been padded before vertically and horizontally beam muscles and bones frame is in place; cushion block uses 1:2.5 cement mortar to make, spacing 1000.
Construction method the most according to claim 1, it is characterised in that described fixing finished product styrofoam operation is: before the construction of (1) styrofoam, it is necessary to according to space between in design drawing every piece basic reversed beam, carries out styrofoam length and width, thick design, draws arrangement figure；Propose styrofoam fabrication plan according to arrangement figure, entrust styrofoam processing factory to be processed；(2) full coat bonding mucilage on the fish tail and waterproof layer of basis, pastes styrofoam, adjacent styrofoam side also full coat bonding mucilage jam-packed by styrofoam arrangement figure; extrusion rubber cement perching knife strikes off; if reversed beam height is higher, styrofoam should be layered the fissure of displacement and paste, and edge joint position must be closed with rubber cement.
Construction method the most according to claim 1; it is characterized in that; described Base isolation system reinforcing bar binding operation is: before colligation sole plate reinforcing bar; wood glue plate is discarded as steel bar horse-shaped bench and the backing plate of cushion block of concrete bar protective layer by the bar shaped that spacing 1000 lay ＞ 300 is wide at styrofoam top; preventing split heads from thrusting in styrofoam, cushion block of concrete bar protective layer is arranged on wood glue plate by spacing 1000 quincunx.
Construction method the most according to claim 1, it is characterised in that described basic beam slab concrete placings and maintenance operation be: after (1) reinforcing bar concealment acceptance and styrofoam loose tool fix acceptance(check), can casting concrete；(2) concrete construction uses the construction method of commerical ready-mixed concrete, delivery pump conveying, and the slump of concrete mix is 160mm～180, uses material distributing machine to pour, and poker vibrator and flat vibrator vibrate；(3) 30mm diameter internal vibration rod carefully vibrated concrete is preferably used at raft plate, basis reversed beam styrofoam loose tool surrounding, vibrating spear inserts spacing 300mm, must vibrate by prescribed distance, must not leak and shake, when vibrating, vibrating spear must not touch styrofoam, and raft plate top surface application vibration board vibrates and the most levelling；(4) concreting should pour along the mode that building longitudinal direction tack advances, when pouring should first beam, raft plate, adjacent beams should pour in symmetrical blanking；(5) water seasoning in time in complete 12 hours of concreting, curing time is no less than 14 days.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610385482.6A CN105951842B (en) | 2016-06-03 | 2016-06-03 | Reversed beam styrofoam fetal membrane construction method under raft plate |
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| CN201610385482.6A CN105951842B (en) | 2016-06-03 | 2016-06-03 | Reversed beam styrofoam fetal membrane construction method under raft plate |
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| CN105951842A true CN105951842A (en) | 2016-09-21 |
| CN105951842B CN105951842B (en) | 2018-03-30 |
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Cited By (5)
| 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 |
| CN110004993A (en) * | 2019-04-22 | 2019-07-12 | 上海建工一建集团有限公司 | A kind of super thick bottom plate surveying setting-out construction method and unwrapping wire platform |
| CN111719577A (en) * | 2020-05-22 | 2020-09-29 | 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 |
| CN116117975A (en) * | 2023-02-23 | 2023-05-16 | 中建八局第四建设有限公司 | Large-volume high-strength concrete experimental block template supporting, pouring and cooling method |
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Cited By (7)
| 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 |
| CN110004993A (en) * | 2019-04-22 | 2019-07-12 | 上海建工一建集团有限公司 | A kind of super thick bottom plate surveying setting-out construction method and unwrapping wire platform |
| CN110004993B (en) * | 2019-04-22 | 2024-01-02 | 上海建工一建集团有限公司 | Ultra-thick bottom plate measuring paying-off construction method and paying-off platform |
| CN111719577A (en) * | 2020-05-22 | 2020-09-29 | 中国建筑第八工程局有限公司 | Construction method of building foundation |
| 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 |
| CN116117975A (en) * | 2023-02-23 | 2023-05-16 | 中建八局第四建设有限公司 | Large-volume high-strength concrete experimental block template supporting, pouring and cooling method |
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| CN105951842B (en) | 2018-03-30 |
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