CN104153400B - A kind of construction method of soft foundation pouring pile head waterproof - Google Patents
A kind of construction method of soft foundation pouring pile head waterproof Download PDFInfo
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- CN104153400B CN104153400B CN201410415983.5A CN201410415983A CN104153400B CN 104153400 B CN104153400 B CN 104153400B CN 201410415983 A CN201410415983 A CN 201410415983A CN 104153400 B CN104153400 B CN 104153400B
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Abstract
The present invention relates to a kind of construction method of soft foundation pouring pile head waterproof, this soft foundation pouring pile head waterproof construction comprises polyurethane waterproof coating, waterproof roll, sealing compound and waterproofing mortar, does polyurethane waterproof coating enhancement Layer at pile crown surrounding, top and periphery; Double-sided self-adhesive waterproof coiled materials is to pile crown root; Pile crown surrounding sealing compound seals; Pile crown protrudes bedding plane surrounding and waterproofing mortar is made at top.This soft foundation pouring pile head waterproof construction method, comprises following working procedure: base concrete cushion construction; Pile crown is looked for the levelling stake top of round pile body; Making cement mortar levelling layer on bedding plane; Brush base treatment agent on cement mortar screeding layer; Pile crown does polyurethane waterproof coating enhancement Layer; Double-sided self-adhesive waterproof coiled materials is to pile crown root; Pile crown surrounding sealing compound seals; Pile crown makees waterproofing mortar together; Waterproof roll layer does pea gravel concreten topping.By multi-way prevention, prevent pile crown place from occurring breakthrough, to ensure workmanship.
Description
Technical field
The present invention relates to a kind of construction method of soft foundation pouring pile head waterproof, is the realm of building construction.
Background technology
The building foundation waterproof problem of complicated geological environment is the tackling key problem emphasis of technical field of buildings always, the present invention is for research object with the engineering pile pile crown waterproofing node way of soft foundation environment, with the actual problem run into of engineering in conjunction with existing job specfication, atlas, to improve the scientific and technical innovation carried out for the purpose of engineering foundation waterproof quality.
Summary of the invention
For achieving the above object, the invention discloses a kind of construction method of soft foundation pouring pile head waterproof, the technical scheme adopted is: pile crown waterproof comprises polyurethane waterproof coating, waterproof roll, sealing compound and waterproofing mortar, does polyurethane waterproof coating enhancement Layer at pile crown surrounding, top and periphery; Double-sided self-adhesive waterproof coiled materials is to pile crown root; Pile crown surrounding sealing compound seals; Pile crown protrudes bedding plane surrounding and waterproofing mortar is made at top.
Further, described polyurethane waterproof coating enhancement Layer is that 2 ㎜ are thick, expands to periphery 500 ㎜ scope; Described double-sided self-adhesive waterproof coiled materials is that 4 ㎜ are thick, affixes to pile crown root; Described waterproofing mortar is thick is 20 ㎜, and proportioning is 1:2.5.
This soft foundation pouring pile head waterproof construction method, comprises following working procedure: the first step, base concrete cushion construction; Second step, builds one deck pea gravel concreten by pile crown surrounding and top, looks for the levelling stake top of round pile body; 3rd step, making cement mortar levelling layer on bedding plane; 4th step, brush base treatment agent one time on cement mortar screeding layer; 5th step, pile crown surrounding, top and periphery do polyurethane waterproof coating enhancement Layer; 6th step, double-sided self-adhesive waterproof coiled materials is to pile crown root; 7th step, pile crown surrounding sealing compound seals; 8th step, pile crown protrudes bedding plane surrounding and waterproofing mortar is made together in top; 9th step, waterproof roll layer does pea gravel concreten topping.
Further, in a first step, the construction process of base concrete bed course is: substrate equating after excavation of foundation pit → put architecture basics sideline adds 300 ㎜ control lines → install bed course limit mould → follow closely absolute altitude to control height reinforcing rod in foundation ditch, spacing 4 meters in length and breadth → build C20 blinding concrete according to the segmentation of construction flowing water section, thickness is not less than 150 ㎜, control to receive light process → cover film, water seasoning before bracing wire is closed flat concrete surface → final set on reinforcing rod at absolute altitude.
Further, in second step, the pile body exposing outside base concrete bed course is looked for circle, stake end face is levelling.Construction process is: pile concrete epidermis picks cutter, stake is pushed up loose stone and rejected → do circular mode with three-ply board ribbing hoop, adds 30 ㎜ hassock blocks → get rid of outside pile crown reinforcing bar subscript and go out the pea gravel concreten of the high grade of absolute altitude control line → build → cover cotton felt water seasoning between Mo Nei and pile body.
Further, in the 3rd step cement mortar screeding layer construction, according to mat surface planeness and defect situation, leveling is carried out to concrete cushion, mainly concrete mats aspect has the out-of-flatness etc. of peeling, dusting, pin nest, crack and flowing water section separated place, and lead the foot of a wall portion, the cloudy male trowel circular arc of the well that catchments; Construction process is: fault location surface is picked cutter cleaning → fault location and to be sprinkled water moistening, trickle mud → smear 20 ㎜ thick 1:2 cement mortar screeding → lead the foot of a wall portion, the cloudy male trowel diameter 50 ㎜ circular arc → compacting maintenance of the well that catchments.
Further, in the 5th step, pile crown surrounding, top and periphery 500 ㎜ scope do the thick polyurethane waterproof coating enhancement Layer of 2 ㎜; Construction process is: concrete mats aspect is cleared up, clear away the foreign material → 500 ㎜ place setting-outs outside pile body limit such as floating ash, control polyurethane boundary of works area → point three times brushing polyurethane waterproof coatings, the time interval is advisable by not sticky all over hand with last, get rid of reinforcing bar place outside pile crown to want emphasis brushing → check to be coated with again with or without omission → in stake top bit to brush one times polyurethane → evenly shed one deck peastone, construct in order to stake top waterproofing mortar.
Further, in the 6th step, base concrete bed course large thick waterproof roll of paving 4 ㎜, until engineering pile edge at one's side; Construction process is: base mat aspect cleans out → put paving line at base mat aspect bullet, coiled material fabric width 1 meter, lap width to be 80mm paving line spacing be 920mm → lead the foot of a wall portion, the negative and positive place of the well that catchments carries out extra play → to inspect for acceptance → along the sticky paving of paving large face waterproof roll, it is empty paving between coiled material and bed course, it is self-adhesion overlap joint between coiled material, engineering pile place met by the careful compacting of lap-joint → coiled material, along pile body circular arc cutting coiled material, make waterproof roll prop up pile body, coiled material and pile body spacing are not more than 20mm → coiled material and pile body periphery polyurethane enhancement Layer will cement.
Further, in the 7th step, with the shutoff of Special seal cream between waterproof roll and pile body; Construction process is: waterproof roll and pile body junction are cleaned out → along the gap between pile body border sealing compound shutoff waterproof roll and pile body → compacting sealing compound → check with or without omission.
Further, in the 8th step, pile crown protrudes concrete mats aspect surrounding and 20 ㎜ 1:2.5 waterproofing mortars are made at top; Construction process is: by the match ratio mixing waterproofing mortar → waterproofing mortar place of construction is cleaned out → carry out waterproofing mortar construction, and smears and flatten → cover cotton felt water seasoning.
Further, in the 9th step, waterproof roll layer does 50 ㎜ thick C20 pea gravel concreten topping; Construction process is: waterproof mortar course check and accept complete and clean out → to copy with level gauge and survey basis end absolute altitude, waterproofing course makes protective layer thickness and controls ash cake → build waterproofing protection layer concrete → receipts face according to the segmentation of construction flowing water section to smear and flatten → water seasoning.
Beneficial effect of the present invention is as follows:
The present invention is compared with traditional basic pile crown waterproofing node way, polyurethane, waterproof roll, sealing compound, waterproofing mortar 4 kinds of waterproofing courses have been made respectively at pile crown place, have rigid waterproofing also to have flexible water, distortion complicated at pile crown joints can have good applicability under being in the medium unfavorable conditions of influence on groundwater environment more greatly, for a long time.By multi-way prevention, prevent pile crown place from occurring breakthrough, to ensure workmanship.
Accompanying drawing explanation
Fig. 1 is soft foundation pouring pile head water proof structure figure;
In figure, 1-pile crown, 2-concrete cushion, 3-agent structure base plate, 4-concrete cover, 51-waterproof coating, 52-waterproof roll, 53-sealing compound, 54-waterproofing mortar.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
A kind of soft foundation pouring pile head waterproof, pile crown waterproof comprises polyurethane waterproof coating 51, waterproof roll 52, sealing compound 53 and waterproofing mortar 54, doing polyurethane waterproof coating enhancement Layer at pile crown 1 surrounding, top and periphery is that 2 ㎜ are thick, expands to periphery 500 ㎜ scope; Double-sided self-adhesive waterproof coiled materials is that 4 ㎜ are thick, and paving is to pile crown root; Pile crown surrounding sealing compound seals; Pile crown protrudes bedding plane surrounding and waterproofing mortar is made at top, and waterproofing mortar is thick is 20 ㎜, and proportioning is 1:2.5.
The invention also discloses a kind of soft foundation pouring pile head waterproof construction method, comprise following working procedure:
The first step, base concrete bed course 2 is constructed.Construction process is: substrate equating after excavation of foundation pit → put architecture basics sideline+300 ㎜ control line (considering that brick loose tool is built by laying bricks or stones) → install bed course limit mould → follow closely absolute altitude to control height reinforcing rod in foundation ditch, spacing 4 meters in length and breadth → build C20 blinding concrete according to the segmentation of construction flowing water section, thickness is not less than 150 ㎜, control to receive light process → cover film, water seasoning before bracing wire is closed flat concrete surface → final set on reinforcing rod at absolute altitude.
Second step, one deck pea gravel concreten is built at pile crown 1 surrounding and the top that just expose outside base concrete bed course, looks for the levelling stake top of round pile body.Construction process is: pile concrete epidermis picks cutter, stake is pushed up loose stone and rejected → do circular mode with three-ply board ribbing hoop, adds 30 ㎜ hassock blocks → get rid of outside pile crown reinforcing bar subscript and go out the pea gravel concreten of the high grade of absolute altitude control line → build → cover cotton felt water seasoning between Mo Nei and pile body.
3rd step, making cement mortar levelling layer 6 on bedding plane, according to mat surface planeness and defect situation, leveling is carried out to concrete cushion 2, mainly there is the out-of-flatness etc. of peeling, dusting, pin nest, crack and flowing water section separated place in concrete cushion 2 face, and lead the foot of a wall portion, the cloudy male trowel circular arc of the well that catchments.Construction process is: fault location surface is picked cutter cleaning → fault location and to be sprinkled water moistening, trickle mud → smear 20 ㎜ thick 1:2 cement mortar screeding → lead the foot of a wall portion, the cloudy male trowel diameter 50 ㎜ circular arc → compacting maintenance of the well that catchments.
4th step, brush base treatment agent one time on cement mortar screeding layer 6.
5th step, pile crown surrounding, top and periphery 500 ㎜ scope do 2 ㎜ thick polyurethane waterproof coating 51 enhancement Layer.Construction process is: concrete cushion 4 cleaning, clear away the foreign material → 500 ㎜ place setting-outs outside pile body limit such as floating ash, control polyurethane boundary of works area → point three times brushing polyurethane waterproof coatings, the time interval is advisable by not sticky all over hand with last, get rid of reinforcing bar place outside pile crown to want emphasis brushing → check to be coated with again with or without omission → in stake top bit to brush one times polyurethane → evenly shed one deck peastone, construct in order to stake top waterproofing mortar.
6th step, the large thick double-sided self-adhesive waterproof coiled materials 52 of face paving 4 ㎜ of base concrete bed course 2, until engineering pile edge at one's side; Construction process is: base mat aspect cleans out → put paving line at base mat aspect bullet, coiled material fabric width 1 meter, lap width to be 80mm paving line spacing be 920mm → lead the foot of a wall portion, the negative and positive place of the well that catchments carries out extra play → to inspect for acceptance → along the sticky paving of paving large face waterproof roll, it is empty paving between coiled material and bed course, it is self-adhesion overlap joint between coiled material, engineering pile place met by the careful compacting of lap-joint → coiled material, along pile body circular arc cutting coiled material, make waterproof roll prop up pile body, coiled material and pile body spacing are not more than 20mm → coiled material and pile body periphery polyurethane enhancement Layer will cement.
7th step, with the shutoff of Special seal cream 53 between waterproof roll 52 and pile body; Construction process is: waterproof roll 52 and pile body junction are cleaned out → along the gap between pile body border sealing compound shutoff waterproof roll and pile body → compacting sealing compound → check with or without omission.
8th step, pile crown protrudes concrete cushion 2 surroundings and top and makees 20 ㎜ 1:2.5 waterproofing mortar 54 one; Construction process is: by match ratio mixing waterproofing mortar → waterproofing mortar construction is cleaned out → carried out in waterproofing mortar 54 construction place, and smears and flatten → cover cotton felt water seasoning.
9th step, waterproof roll 52 layers does 50 ㎜ thick C20 pea gravel concreten topping 4; Construction process is: waterproof mortar course check and accept complete and clean out → to copy with level gauge and survey basis end absolute altitude, waterproofing course makes protective layer thickness and controls ash cake → build waterproofing protection layer concrete → receipts face according to the segmentation of construction flowing water section to smear and flatten → water seasoning.
After soft foundation pouring pile head waterproof construction, just can carry out the construction of agent structure base plate 3.
Claims (8)
1. a soft foundation pouring pile head waterproof construction method, soft foundation pouring pile head waterproof construction comprises polyurethane waterproof coating (51), waterproof roll (52), sealing compound (53) and waterproofing mortar (54), it is characterized in that, do polyurethane waterproof coating enhancement Layer at pile crown (1) surrounding, top and periphery; Double-sided self-adhesive waterproof coiled materials is to pile crown root; Pile crown surrounding sealing compound seals; Pile crown protrudes bedding plane surrounding and waterproofing mortar is made at top;
Described polyurethane waterproof coating enhancement Layer is that 2 ㎜ are thick, expands to periphery 500 ㎜ scope; Described double-sided self-adhesive waterproof coiled materials is that 4 ㎜ are thick, affixes to pile crown root; Described waterproofing mortar is thick is 20 ㎜, and proportioning is 1:2.5;
Its construction method comprises following working procedure:
The first step, base concrete bed course (2) is constructed;
Second step, builds one deck pea gravel concreten by pile crown (1) surrounding and top, looks for the levelling stake top of round pile body;
3rd step, making cement mortar levelling layer (6) on bedding plane;
4th step, brush base treatment agent one time on cement mortar screeding layer (6);
5th step, pile crown surrounding, top and periphery do polyurethane waterproof coating (51) enhancement Layer;
6th step, double-sided self-adhesive waterproof coiled materials (52) is to pile crown root;
7th step, pile crown surrounding sealing compound (53) seals;
8th step, pile crown protrudes bedding plane surrounding and waterproofing mortar (54) is made together in top;
9th step, waterproof roll (52) layer does pea gravel concreten topping (4);
In a first step, the construction process of base concrete bed course (2) is: substrate equating after excavation of foundation pit → put architecture basics sideline adds 300 ㎜ control lines → install bed course limit mould → follow closely absolute altitude to control reinforcing rod in foundation ditch, spacing 4 meters in length and breadth → build C20 blinding concrete according to the segmentation of construction flowing water section, thickness is not less than 150 ㎜, control to receive light process → cover film, water seasoning before bracing wire is closed flat concrete surface → final set on reinforcing rod at absolute altitude.
2. waterproof construction method according to claim 1, is characterized in that, in second step, the pile body exposing outside base concrete bed course is looked for circle, stake end face is levelling; Construction process is: pile concrete epidermis picks cutter, stake is pushed up loose stone and rejected → do circular mode with three-ply board ribbing hoop, adds 30 ㎜ hassock blocks → get rid of outside pile crown reinforcing bar subscript and go out the pea gravel concreten of the high grade of absolute altitude control line → build → cover cotton felt water seasoning between Mo Nei and pile body.
3. waterproof construction method according to claim 1, it is characterized in that, in the 3rd step cement mortar screeding layer (6) construction, according to mat surface planeness and defect situation, leveling is carried out to concrete cushion (2), mainly there is the out-of-flatness of peeling, dusting, pin nest, crack and flowing water section separated place in concrete cushion (2) face, and lead the foot of a wall portion, the cloudy male trowel circular arc of the well that catchments; Construction process is: fault location surface is picked cutter cleaning → fault location and to be sprinkled water moistening, trickle mud → smear 20 ㎜ thick 1:2 cement mortar screeding → lead the foot of a wall portion, the cloudy male trowel diameter 50 ㎜ circular arc → compacting maintenance of the well that catchments.
4. waterproof construction method according to claim 1, is characterized in that, in the 5th step, pile crown surrounding, top and periphery 500 ㎜ scope do 2 ㎜ thick polyurethane waterproof coating (51) enhancement Layer; Construction process is: pea gravel concreten topping (4) face is cleared up; clear away floating grey foreign material → 500 ㎜ place setting-outs outside pile body limit; control polyurethane boundary of works area → point three times brushing polyurethane waterproof coatings; the time interval is advisable by not sticky all over hand with last; get rid of reinforcing bar place outside pile crown to want emphasis brushing → check to be coated with again with or without omission → in stake top bit to brush one times polyurethane → evenly shed one deck peastone, construct in order to stake top waterproofing mortar.
5. waterproof construction method according to claim 1, is characterized in that, in the 6th step, the large thick waterproof roll of face paving 4 ㎜ (52) of base concrete bed course (2), until engineering pile edge at one's side; Construction process is: base mat aspect cleans out → put paving line at base mat aspect bullet, coiled material fabric width 1 meter, lap width to be 80mm paving line spacing be 920mm → lead the foot of a wall portion, the negative and positive place of the well that catchments carries out extra play → to inspect for acceptance → along the sticky paving of paving large face waterproof roll, it is empty paving between coiled material and bed course, it is self-adhesion overlap joint between coiled material, engineering pile place met by the careful compacting of lap-joint → coiled material, along pile body circular arc cutting coiled material, make waterproof roll prop up pile body, coiled material and pile body spacing are not more than 20mm → coiled material and pile body periphery polyurethane enhancement Layer will cement.
6. waterproof construction method according to claim 1, is characterized in that, in the 7th step, with sealing compound (53) shutoff between waterproof roll (52) and pile body; Construction process is: waterproof roll (52) and pile body junction are cleaned out → along the gap between pile body border sealing compound shutoff waterproof roll and pile body → compacting sealing compound → check with or without omission.
7. waterproof construction method according to claim 1, is characterized in that, in the 8th step, pile crown protrudes concrete cushion (2) face surrounding and 20 ㎜ 1:2.5 waterproofing mortars (54) are made at top; Construction process is: by match ratio mixing waterproofing mortar → waterproofing mortar construction is cleaned out → carried out in waterproofing mortar (54) construction place, and smears and flatten → cover cotton felt water seasoning.
8. waterproof construction method according to claim 1, is characterized in that, in the 9th step, waterproof roll (52) layer is 50 ㎜ thick C20 pea gravel concreten topping (4); Construction process is: waterproof mortar course check and accept complete and clean out → to copy with level gauge and survey basis end absolute altitude, waterproof roll (52) layer makes protective layer thickness and controls ash cake → build pea gravel concreten topping (4) → receipts face according to the segmentation of construction flowing water section to smear and flatten → water seasoning.
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Families Citing this family (10)
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| CN104727335B (en) * | 2015-02-13 | 2016-08-10 | 常熟建工建设集团有限公司 | A kind of ground rapid constructing method |
| CN104947809A (en) * | 2015-06-29 | 2015-09-30 | 广西金雨伞防水装饰有限公司 | Full-seal waterproof system of concrete construction project |
| CN105178452B (en) * | 2015-06-29 | 2018-07-31 | 广西金雨伞防水装饰有限公司 | Hermetically sealed waterproof construction method |
| CN104975617B (en) * | 2015-07-15 | 2017-01-25 | 郑贤方 | Waterproof construction method of basement foundation cast-in-place pile head |
| CN105951893A (en) * | 2016-06-27 | 2016-09-21 | 中铁第四勘察设计院集团有限公司 | Uplift pile head node waterproof structure and construction method thereof |
| CN106759308B (en) * | 2016-11-30 | 2019-04-23 | 中国一冶集团有限公司 | A kind of precast hollow pile head waterproof construction method |
| CN111456108B (en) * | 2020-04-11 | 2021-09-14 | 广东建兴基础工程有限公司 | Waterproof structure of foundation bearing platform and construction method thereof |
| CN112081146A (en) * | 2020-09-03 | 2020-12-15 | 江苏凯伦建材股份有限公司 | Construction method of polymer self-adhesive film waterproof coiled material capable of being constructed in rainy season |
| CN112411564A (en) * | 2020-11-06 | 2021-02-26 | 天津市市政工程设计研究院 | Waterproof structure with latticed columns penetrating through bottom plate and construction method of waterproof structure |
| CN112815153A (en) * | 2021-01-04 | 2021-05-18 | 江苏凯伦建材股份有限公司 | Waterproof treatment method for root of through-wall or floor pipeline |
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| CN202718147U (en) * | 2012-07-19 | 2013-02-06 | 朱奎 | Waterproof structure of pile head |
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| JP2821961B2 (en) * | 1991-09-27 | 1998-11-05 | 前田建設工業株式会社 | Construction method of impermeable walls in basement |
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