CN110387908A - The rear pouring tape construction method of multilayer constraint antiseep - Google Patents

The rear pouring tape construction method of multilayer constraint antiseep Download PDF

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Publication number
CN110387908A
CN110387908A CN201910684421.3A CN201910684421A CN110387908A CN 110387908 A CN110387908 A CN 110387908A CN 201910684421 A CN201910684421 A CN 201910684421A CN 110387908 A CN110387908 A CN 110387908A
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CN
China
Prior art keywords
post
cast strip
antiseep
steel plate
construction
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Granted
Application number
CN201910684421.3A
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Chinese (zh)
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CN110387908B (en
Inventor
张伟
张洪刚
孙辉
高玉亭
孙润林
殷明轩
郎宇飞
姜福华
周斌
邹贤飞
郭友铭
孙圣华
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Shenzhen Construction Engineering Group Co Ltd
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Shenzhen Construction Engineering Group Co Ltd
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Priority to CN201910684421.3A priority Critical patent/CN110387908B/en
Publication of CN110387908A publication Critical patent/CN110387908A/en
Application granted granted Critical
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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00Keeping dry foundation sites or other areas in the ground
    • E02D19/06Restraining of underground water
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00Keeping dry foundation sites or other areas in the ground
    • E02D19/22Lining sumps in trenches or other foundation pits
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/16Arrangement or construction of joints in foundation structures
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/02Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/02Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
    • E02D31/025Draining membranes, sheets or fabric specially adapted therefor, e.g. with dimples
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00Materials
    • E02D2300/0004Synthetics
    • E02D2300/0006Plastics
    • E02D2300/0007PVC
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00Materials
    • E02D2300/0004Synthetics
    • E02D2300/0018Cement used as binder
    • E02D2300/002Concrete
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00Materials
    • E02D2300/0026Metals
    • E02D2300/0029Steel; Iron

Abstract

The present invention relates to the technical fields of post empiricism, disclose the rear pouring tape construction method of multilayer constraint antiseep, construction procedure: design section is that french drain is arranged in the top of armored concrete enhancement layer in bottom covering armored concrete enhancement layer-of the trapezoidal post-cast strip-in post-cast strip, post-cast strip bottom setting catch pit-install at construction joint folding shape steel plate for sealing water-doubling shape steel plate for sealing water construction joint at carry out dabbing-is overlayed in french drain rubble-rubble surface covering geotextiles-use pvc pipe progress indent, it forms underdrain-and covers the hidden post-cast strip of geotextiles-on pvc pipe;Pass through above-mentioned construction, form the multiple constraint post-cast strip of " two anti-two rows of formulas ", it is armored concrete enhancement layer and folding two waterproof measures of shape steel plate for sealing water respectively, french drain and indent form the twice drainage channel of post-cast strip, the water that other positions are oozed out can be drained to nearby in indent or french drain, water is discharged into catch pit or drains into exterior wall's drainage ditch, reduces risk of leakage again.

Description

The rear pouring tape construction method of multilayer constraint antiseep
Technical field
The invention patent relates to the technical fields of post empiricism, pour after constraining antiseep in particular to multilayer Belt construction method.
Background technique
In construction projects, for the relative settlement of the needs of function and the high-rise cylinder of solution, the contraction distortion of reinforced concrete And concrete temperature stress the problems such as, post-cast strip has been widely used in underground project waterproof in architectural engineering stake, post-cast strip It constructs particularly important;
Currently, Real Estate Development industry has also entered the trend of " survival of the fittest ", " high-quality, high speed " has been increasingly becoming ground The common recognition of developer is produced, and in this, as general contract unit bid access threshold;Post-cast strip percolating water, pre- closing are always to build The common quality defect of construction, quality control on construction are not satisfactory;As well-known real estate developer wants construction quality, antiseep It asks higher and higher, if reforming without post-cast strip technological innovation, is difficult to meet the duration of real estate company and quality requirements.
Conventional bottom plate rear pouring tape method of quality control, for post-cast strip antiseep control usually using concrete cushion Waterproof is done, steel plate for sealing water is reserved between pouring after protective layer in the soleplate, then uses concrete enclosing;And it is poured after outer wall of basement The pre- closing of band is conventional to use brick enclosure wall, then carries out backfilling of earthwork.
In the prior art, more thin for the measure of post-cast strip antiseep at present, good antiseep can not be played Effect.
Summary of the invention
The purpose of the present invention is to provide the rear pouring tape construction methods of multilayer constraint antiseep, it is intended to solve the prior art In, the ineffective problem of post-cast strip antiseep.
The invention is realized in this way the rear pouring tape construction method of multilayer constraint antiseep, including following construction procedure:
1) post-cast strip, is designed;The trapezoidal shape in the section of the post-cast strip;
2), armored concrete enhancement layer is covered in the bottom of the post-cast strip;The armored concrete enhancement layer includes mixed Solidifying soil padding, self-adhesive modified asphalt waterproof rolling material, additional waterproof course and pea gravel concreten;
A pours the concrete cushion;
The b construction self-adhesive modified asphalt waterproof rolling material, and the additional waterproof course is set;
C assembling reinforcement, installs and hangs mould, pours the pea gravel concreten;
3), french drain is set on the armored concrete enhancement layer, the post-cast strip is equipped with catch pit, and the french drain extends To the catch pit;
4), after the two sides assembling reinforcement of the post-cast strip, along the two sides construction joint of the post-cast strip, setting folding shape is stopped Water steel plate;The angle being bent to form in the middle part of the steel plate for sealing water is between 120 ° to 135 °.
5), to progress dabbing processing at concrete construction joint above and below the folding shape steel plate for sealing water, and dabbing rate is not less than 95%;
6) rubble, is overlayed in the french drain, forms drainage channel, and cover geotextiles on rubble surface;And the filter Aquaporin extends to the catch pit;
7), the two sides at the top of the post-cast strip carry out indent using pvc pipe, and the pvc pipe is cut in half, institute is covered on It states indent and forms underdrain;The underdrain is connected with externally drained ditch;
8) geotextiles, are covered in the top of the pvc pipe;
9), the hidden post-cast strip of concrete is shunk using the compensation that concrete strength grade is higher than former component.
Further, the catch pit uses sand-lime brick masonry, and the inside of the catch pit carries out plaster leveling.
Further, the drainage channel is arranged towards the direction of the catch pit in 1% gradient.
Further, the trapezoidal shape in the section of the post-cast strip;Multiple folding shape steel plate for sealing water are separately positioned on described At the two sides construction joint of post-cast strip;Multiple high ribbed formworks are installed below the folding shape steel plate for sealing water;Multiple high ribbed formworks from Under supreme oblique arrangement, and tilt angle is consistent with the tilt angle of the bevel edge of the post-cast strip.
Further, the post-cast strip includes the support frame for installing the high ribbed formwork, and support frame as described above passes through bar dowel edge The direction of the post-cast strip bevel edge is welded, and multiple high ribbed formworks are by iron wire inclination binding on support frame as described above.
Further, the folding shape steel plate for sealing water is in tilted layout along the direction away from the post-cast strip.
Further, the both ends of the folding shape steel plate for sealing water pass through multiple bar dowels respectively and are welded and fixed, and multiple described Bar dowel is in arranged for interval.
Further, the pvc pipe being cut in half is covered on the indent, the root of the pvc pipe is rushed by mortar Muscle is fixed.
Further, the catch pit uses sand-lime brick masonry, and the inside of the catch pit carries out plaster leveling.
Further, the resistance to compression grade of the pea gravel concreten in the step 2) is C20.
Compared with prior art, the rear pouring tape construction method of the multilayer constraint antiseep of above-mentioned offer provided by the invention, Construction procedure: design section covers armored concrete enhancement layer-in reinforced concrete in the bottom of post-cast strip for trapezoidal post-cast strip- French drain is arranged in the top of native enhancement layer, and it is right that the bottom setting catch pit-in post-cast strip installs folding shape steel plate for sealing water-at construction joint Progress dabbing-overlays rubble-in french drain and uses pvc pipe in rubble surface covering geotextiles-at folding shape steel plate for sealing water construction joint Indent is carried out, underdrain-is formed and covers the hidden post-cast strip of geotextiles-on pvc pipe;By above-mentioned construction, " two anti-two rows are formed The multiple constraint post-cast strip of formula " is armored concrete enhancement layer and folding two waterproof measures of shape steel plate for sealing water respectively, wherein rolling over The setting of shape steel plate for sealing water be more convenient for post empiricism seam abundant dabbing, combine closely conducive to new-old concrete, reduce construction Stitch the risk of leakage;Secondly, french drain and indent form the twice drainage channel of post-cast strip, the water that can ooze out other positions is nearest It is drained in indent or french drain, water is discharged into catch pit or drains into exterior wall's drainage ditch, reduce risk of leakage again.
Detailed description of the invention
Fig. 1 is the floor map of post-cast strip provided by the invention;
Fig. 2 is the stereoscopic schematic diagram of catch pit provided by the invention;
Fig. 3 is the stereoscopic schematic diagram of installation folding shape steel plate for sealing water provided by the invention;
Fig. 4 is the stereoscopic schematic diagram of folding shape steel plate for sealing water provided by the invention;
Fig. 5 is the schematic cross-section of folding shape steel plate for sealing water provided by the invention;
Fig. 6 is the floor map of prefabricated board provided by the invention;
Fig. 7 is the schematic cross-section of prefabricated board provided by the invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
Realization of the invention is described in detail below in conjunction with specific embodiment.
The same or similar label correspond to the same or similar components in the attached drawing of the present embodiment;In description of the invention In, it is to be understood that if there is the orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right" for based on attached drawing institute The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore describe the use of positional relationship in attached drawing Language only for illustration, should not be understood as the limitation to this patent, for the ordinary skill in the art, can be with The concrete meaning of above-mentioned term is understood as the case may be.
It is preferred embodiment provided by the invention referring to Fig.1 shown in -7.
Multilayer constrains the rear pouring tape construction method of antiseep, including following construction procedure:
1) post-cast strip 10, is designed;The trapezoidal shape in the section of post-cast strip 10;The post-cast strip 10 of trapezoidal shape is convenient for subsequent construction It carries out, and the water repellent area of post-cast strip 10 can be increased;
2), armored concrete enhancement layer is set in the bottom of post-cast strip 10;Armored concrete enhancement layer includes concrete cushion 11, self-adhesive modified asphalt waterproof rolling material 12, additional waterproof course 17 and pea gravel concreten 13;
After the earthwork is dug to designed elevation, casting concrete bed course 11, concrete cushion 11 be reinforced concrete foundation with The middle layer of foundation soil can make the surfacing for being poured area, convenient in assembling reinforcement above, can also play protection basis Effect;Then according to design drawing, in 10 bottom of post-cast strip construction self-adhesive modified asphalt waterproof rolling material 12, and it is attached that waterproof is arranged Add layer 17, carry out dual waterproof, prevents 10 bottom of post-cast strip from seeping water;After waterproof construction, 10 bottom of post-cast strip is bound by design drawing The reinforcing bar in portion, and install and hang mould, it pours pea gravel concreten 13 and also serves as waterproof protective layer.
The resistance to compression grade of pea gravel concreten 13 is C20 in the present embodiment.
3), french drain 15 is set on armored concrete enhancement layer, french drain 15 is a kind of subdrainage channel, can be used to exclude Underground water;Post-cast strip 10 is equipped with catch pit 22, and french drain 15 extends to catch pit 22, and the underground water of exudation can converge along french drain 15 To catch pit 22, catch pit 22 stores water, avoids water from impregnating entire post-cast strip 10, influences construction quality.
4), the setting folding shape steel plate for sealing water 21 at the two sides construction joint of post-cast strip 10;
In box foundation or basement, the concrete of bottom plate and Side fascia, which separately pours, to be smash, and pours that smash wallboard mixed next time again When solidifying soil, just there is a construction joint, when the position of this construction joint is below phreatic line, is easy for generating infiltration, this Sample just needs to carry out this construction joint technical treatment, is handled, is put by setting folding shape steel plate for sealing water 21 in the present embodiment Set construction joint infiltration.
Installation folding shape steel plate for sealing water 21: the both ends for rolling over shape steel plate for sealing water 21 are welded and fixed with multiple bar dowels 23 respectively, And multiple bar dowels 23 are in arranged for interval;The present embodiment uses 14 bar dowel 23 of φ, and along bar dowel 23 along post-cast strip 10 Each 1 meter of the direction of bevel edge is welded one;In order to enable to roll over the concrete of 21 lower part of shape steel plate for sealing water at 10 construction joint of post-cast strip Abundant dabbing, doubling shape steel plate for sealing water 21 bend the middle part for rolling over shape steel plate for sealing water 21, and bending angle is into being designed Between 120 ° to 135 °, folding shape steel plate for sealing water 21 is in tilted layout along the direction away from post-cast strip 10 when installation, convenient for folding shape sealing About the 21 abundant dabbing of concrete construction joint of steel plate, combines closely conducive to new-old concrete, reduces construction joint risk of leakage.
5) dabbing processing, is carried out at about 21 concrete construction joint of doubling shape steel plate for sealing water, and dabbing rate is not less than 95%;
The effect of dabbing is to be firmly bonded the construction surface of two construction stages;Usually in cast-in-place structural, in Bars In Poured Concrete Slab After pouring, dabbing is needed, carries out the casting of next layer of column wall;It makes concrete binding secured, enhances cohesive force, be conducive to new and old Concrete is combined closely, and the risk of construction joint leakage is reduced.
6) rubble, is overlayed in french drain 15, forms drainage channel, and cover geotextiles, and drainage channel on rubble surface Extend to catch pit 22;
Water level can be reduced by overlaying rubble, and drainage channel is arranged along the direction of catch pit 22 in certain slope, infiltration Water out can flow into catch pit 22 along drainage channel.
Geotextiles are that new material geosynthetics is one such, and finished product is cloth-like, and geotextiles strength is high, in dry and wet shape Adequately strength and elongation are able to maintain under state;It is corrosion-resistant, it can be muchly corrosion-resistant in the soil and water of different pH values;Thoroughly It is aqueous good, there is gap between fiber, so there is good permeability performance;Microbial resistance is good, and to microorganism, damaging by worms is not damaged Evil;And geotextiles due to material it is light, soft, therefore transport, be laid with, it is easy for construction, be covered on rubble, it is ensured that in french drain 15 Water energy is smoothly flow in catch pit 22, be can avoid french drain 15 and is blocked, and plays very big effect in the construction of post-cast strip 10.
7), the two sides at 10 top of post-cast strip carry out indent 18 using pvc pipe 19;Pvc pipe 19 is cut in half, by pvc pipe 19 are covered on indent 18, form underdrain with indent 18, the root of pvc pipe 19 is fixed by mortar floating screed 20, underdrain and outside Gutter is connected;
Pvc pipe 19 be with Corvic and stabilizer, lubricant etc. after with pressure sintering extrusion forming, be earliest The plastic pipe being developed and applied, 19 resistance to corrosion of pvc pipe is strong, be easy to be bonded, price is low, quality is hard, in post-cast strip Long service life in 10 can be drained for a long time for post-cast strip 10.
8) geotextiles, are covered in the top of pvc pipe 19, pvc pipe 19 can be protected;
9) the hidden post-cast strip 10 of concrete, is shunk using the compensation that concrete strength grade is higher than former component, can effectively solve to pass in this way Brick enclosing wall intensity of uniting is low, and destructible, the common quality defects such as more of doing over again simplify working procedure, improve construction efficiency.
The rear pouring tape construction method of the multilayer constraint antiseep of above-mentioned offer, construction procedure: after design section is trapezoidal It pours the bottom covering armored concrete enhancement layer-with 10- in post-cast strip 10 and french drain is set in the top of armored concrete enhancement layer 15, the bottom setting catch pit 22- in post-cast strip 10 installs folding shape steel plate for sealing water 21- doubling shape steel plate for sealing water 21 at construction joint Progress dabbing-overlays rubble-in french drain 15 and carries out indent using pvc pipe 19 in rubble surface covering geotextiles-at construction joint 18, it forms underdrain-and covers the hidden post-cast strip 10 of geotextiles-on pvc pipe 19;By above-mentioned construction, " two anti-two rows of formulas " are formed Multilayer constrain post-cast strip 10, be respectively armored concrete enhancement layer and folding 21 two waterproof measures of shape steel plate for sealing water, wherein The setting of folding shape steel plate for sealing water 21 is more convenient for the abundant dabbing of 10 construction joint of post-cast strip, is combined closely conducive to new-old concrete, drop The risk of low construction joint leakage;Secondly, french drain 15 and indent 18 form the twice drainage channel of post-cast strip 10, it can be by other positions The water of exudation is drained to nearby in indent 18 or french drain 15, and water is discharged into catch pit 22 or drains into exterior wall's drainage ditch, is reduced again Risk of leakage.
In step 2), concrete cushion 11, self-adhesive modified asphalt waterproof rolling material 12, additional waterproof course 17 and microlith are mixed Solidifying soil 13 is sequentially covered on 10 bottom of post-cast strip, can be to the bottom plate assembling reinforcement of 10 two sides of post-cast strip after the completion of covering.
Drainage channel is arranged towards the direction of catch pit 22 in 1% gradient, and the water for being collected to french drain 15 can be made along filter The ramp direction of aquaporin flow to catch pit 22, avoids 15 ponding of french drain.
The lower section of folding shape steel plate for sealing water 21 is equipped with multiple high ribbed formworks 25;High ribbed formwork 25 is fixed as expendable template , 25 mechanical property of high ribbed formwork is good, and it is small by lateral pressure, and after casting concrete, since high ribbed formwork 25 itself has network interface, then It is easy to use naked eyes supervision casting engineering, thus the risk that reduction gap and honeycomb occur, is also convenient for wearing muscle and continuous binding steel Muscle, and without demoulding or make seam and can bond casting concrete next time, transport, installation also facilitate, and mention for this construction work Very big convenience is supplied.
Folding shape steel plate for sealing water 21 in the present embodiment, including plate body;Plate body includes first panel 210 and second panel 211, One end of first panel 210 is connected with one end of second panel 211, one end of first panel 210 and the one of second panel 211 The angle formed between end is less than 180 °;The section of plate body is V-shaped, then when plate body being mounted on construction and sealing up, first panel 210 With second panel 211 upward to provide space at construction joint, it is convenient for dabbing, is firmly bonded construction surface, be conducive to new and old coagulation Soil is combined closely, and the risk of construction joint leakage is reduced.
The other end of first panel 210 is bent to form the first side body 212 downward, and the other end of second panel 211 is curved downward Folding forms the second side body 213;First in body 212 and second body 213 increase the area of plate body, and the first side body 212 and The angle between angle and the second side body 213 and second panel 211 formed between one panel 210 is all larger than 180 °, then plate After body installs, first in body 212 and second body 213 be then to extend downward, after casting concrete, one can be played The effect of a stable plate body, makes plate body be connected with concrete.
First in body 212 and second upper and lower surface of body 213 be equipped with rubber fastening band 214, rubber fastening band 214 has There is good elasticity, wearability, resistance to ag(e)ing and tear resistance, adaptive deformation ability is strong, waterproof performance is good, can protect first The body 213 in body 212 and second, avoid first when body 212 is with second body 213 be etched.
The both ends of plate body are respectively formed lower contact 216 and top connection 217, transport for convenience, facilitate installation, roll over shape sealing All be segmentation installation when steel plate 21 is installed, generally 3 meters or 6 meters, when installation plate body one end top connection 217 or lower contact 216 with The lower contact 216 or top connection 217 of another plate body one end are connected to each other;It is recessed downward in the upper surface of lower contact 216 and forms upper slot Face, the face-up concave shape of the following table of top connection 217 is at lower groove face;When two connectors dock, it is connected to each other upper groove surface with lower groove face, with Start to weld the seam between two connectors afterwards, and must weld full and be welding by both sides, there can be no leak sources, keep two plate bodys complete U.S. connection avoids influencing waterproof performance.
The angle formed between first panel 210 and second panel 211 is 120 ° to 135 °, if first panel 210 and the Angle between two panels 211 can reduce the water repellent area of plate body less than 120 °, and second panel 211 and first panel 210 it Between angle be greater than 135 ° when, can reduce folding shape steel plate for sealing water 21 waterproof effect, only when first panel 210 and second panel When angle between 211 is between 120 ° to 135 °, it can make to roll over shape steel plate for sealing water 21 and play best waterproof effect.
First angle formed between body 212 and first panel 210 and when second body 213 and first panel 210 it Between the angle that is formed be 225 ° to 240 °.
The bottom of first panel 210 and second panel 211 has convexed to form mounting base 215 respectively, and mounting base 215 is curved downward It is bent arc-shaped, in the present embodiment, when shape steel plate for sealing water 21 is rolled in installation, first the reinforcing bar of base plate bottom layer is bound and is completed, with φ 14 Bar dowel 23 is welded the support frame 24 of installation high ribbed formwork 25 along post-cast strip slope direction every 1m, and high ribbed formwork 25 is tilted with iron wire and tied up It pricks on support frame 24;After the high ribbed formwork 25 of lower part is fixed, i.e., mountable folding shape steel plate for sealing water 21, both ends are short with multiple φ 14 Reinforcing bar 23 is welded and fixed, and at a distance of 1m between each bar dowel 23;After the completion of the binding of bottom plate surface layer reinforcing bar, then top is installed High ribbed formwork 25, the installation of top and the bottom high ribbed formwork 25 should be consistent with the post-cast strip section gradient;After steel plate for sealing water installation experience folds lattice Underplate concrete can be poured, it is ensured that pour closely knit.
First panel 210 is convex to be formed with a plurality of raised line, and raised line includes diversion section 218 and water blocking section 219;Diversion section 218 It is disposed to extend towards the direction of second panel 211;The direction of water blocking section 219 towards the first side body 212 is disposed to extend;Diversion section 218 arrange towards the direction of the first side body 212 in inverted "eight" shape, and water blocking section 219 is in positive " eight " along the direction of the first side body 212 Font arrangement, in the post empiricism of the present embodiment, folding shape steel plate for sealing water 21 tilts installation at 10 construction joint of post-cast strip, from The water that top leaks out on folding shape steel plate for sealing water 21 can wander about as a refugee along diversion section 218 by water water conservancy diversion and roll over shape steel plate for sealing water 21, and keep off Water section 219 can stop external water to enter folding shape steel plate for sealing water 21, play the role of water blocking.
The outer end of water blocking section 219 has supporting block 220, and certain supporting role is played to water blocking section 219.
In addition, catch pit 22 uses sand-lime brick masonry, the capacity of Dinas brickes is big, and sound insulation property is very superior, in Jiang Shui When being drained to catch pit 22, water flow sound can be isolated, to user with comfortable living environment.
In the present embodiment, after 10 closed concrete of post-cast strip, it is prefabricated that armored concrete is installed above post-cast strip 10 Plate 26;The tongue and groove 261 of wide 100mm, depth 45mm need to be first preset by outdoor two sides in post-cast strip 10;Two pieces of plates connect, edges of boards point Other half of through slot mouth, joining is spliced one on the other, and can prevent the construction stitched is tongue and groove 261;So two in the present embodiment Connection between block reinforced concrete prefabricated board 26 is the splicing of joining one on the other;Before shear wall seals mould, according to design drawing Pre-embedded bolt is needed, it is M16 bolt that the present embodiment, which uses,.
Before the installation of brushing reinforced concrete prefabricated board 26 at tongue and groove 261,2 thick polyurethane water-proofs are brushed at tongue and groove 261 Film, coating extend to 261 outside 250mm of tongue and groove;Prefabricated board is fixed using M16 bolt;Consider that 10 two sides of post-cast strip are heavy Drop or temperature difference deformation, easily lead to prefabricated board drawing crack, when fixing prefabricated board, side bolt cannot be tightened completely, and the present embodiment makes Traditional brick setting is substituted with reinforced concrete prefabricated board 26, bolt is not tightened completely, it can be ensured that prefabricated board has certain freedom Activity space.
Aperture 260 is reserved in the quadrangle of reinforced concrete prefabricated board 26, prefabricated board passes through aperture 260 and the pre-buried spiral shell of shear wall It tethers and connects, the aperture 260 reserved in the present embodiment is φ 30;The size of reinforced concrete prefabricated board 26 is 1m*1m*0.04m (long * wide * is thick);It is interior to be arranged with 200 single-layer bidirectional of reinforcing bar A8@, using C25 concrete.
After the installation is completed, outside is spread reinforced concrete prefabricated board 26 using 3mm self-adhesive modified asphalt waterproof rolling material 12 Patch can directly carry out basement backfilling of earthwork as waterproof protective layer using 20 thick extruded polyethylene benzene plates after the completion after the completion.
In addition, in actual field work progress, because synchronization, post-cast strip is not achieved in 10 adjacent area construction speed of post-cast strip 10 do not have two sides while carrying out the condition that frame body is set up, at this point, being inserted in morning at the top of adjustable rigid supported rod erecting or common steel tube Tear head open, independent support system is effectively connect with the full hall frame support other than 10 range of post-cast strip, formed and stablize entirety.
Early dismantling head is a kind of component that cooperation adjustable steel support uses, and the early dismantling head in the present embodiment uses screw rod diameter 38mm, material Q235, top are equipped with detachable supporting plate, highly distracted with the support for shuttering lumps of wood outside 10 range of post-cast strip time, centre installation Rotary-tray and adjusting bolt, the stupefied reinforcing member of master poured as post-cast strip 10.
Early dismantling head top plate band, the wide template of strip i.e. 400 are first installed.After other region templates are installed, using what is do not sawed Template arranges template from strip side to both sides.Retain the unilateral strip in post-cast strip 10 and 24 body of independent support frame, remaining template when demoulding And frame body is removed;After post-cast strip 10 reaches the closing time limit of design requirement, dabbing cleaning is carried out to post-cast strip 10, removes rubbish Rubbish, then install 10 intermediate die plate of post-cast strip and secondary distracted.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.

Claims (10)

1. the rear pouring tape construction method of multilayer constraint antiseep, which is characterized in that including following construction procedure:
1) post-cast strip, is designed;The trapezoidal shape in the section of the post-cast strip;
2), armored concrete enhancement layer is covered in the bottom of the post-cast strip;The armored concrete enhancement layer includes concrete Bed course, self-adhesive modified asphalt waterproof rolling material, additional waterproof course and pea gravel concreten;
A pours the concrete cushion;
The b construction self-adhesive modified asphalt waterproof rolling material, and the additional waterproof course is set;
C assembling reinforcement, installs and hangs mould, pours the pea gravel concreten;
3), french drain is set on the armored concrete enhancement layer, the post-cast strip is equipped with catch pit, and the french drain extends to institute State catch pit;
4), after the two sides assembling reinforcement of the post-cast strip, the setting folding shape water-stopping steel along the two sides construction joint of the post-cast strip Plate;The angle being bent to form in the middle part of the steel plate for sealing water is between 120 ° to 135 °.
5), to progress dabbing processing at concrete construction joint above and below the folding shape steel plate for sealing water, and dabbing rate is not less than 95%;
6) rubble, is overlayed in the french drain, forms drainage channel, and cover geotextiles on rubble surface;And the drainage is logical Road extends to the catch pit;
7), the two sides at the top of the post-cast strip carry out indent using pvc pipe, and the pvc pipe is cut in half, the pressure is covered on Slot forms underdrain;The underdrain is connected with externally drained ditch;
8) geotextiles, are covered in the top of the pvc pipe;
9), the hidden post-cast strip of concrete is shunk using the compensation that concrete strength grade is higher than former component.
2. the rear pouring tape construction method of multilayer constraint antiseep as described in claim 1, which is characterized in that the catch pit is adopted With sand-lime brick masonry, and the inside of the catch pit carries out plaster leveling.
3. the rear pouring tape construction method of multilayer constraint antiseep as claimed in claim 2, which is characterized in that the drainage channel It is arranged towards the direction of the catch pit in 1% gradient.
4. the late poured band structure of multilayer constraint antiseep as claimed in claim 3, which is characterized in that the section of the post-cast strip Trapezoidal shape;Multiple folding shape steel plate for sealing water are separately positioned at the two sides construction joint of the post-cast strip;The folding shape sealing Multiple high ribbed formworks are installed below steel plate;Multiple high ribbed formworks are obliquely arranged from bottom to up, and tilt angle and institute The tilt angle for stating the bevel edge of post-cast strip is consistent.
5. the late poured band structure of multilayer constraint antiseep as claimed in claim 4, which is characterized in that the post-cast strip includes peace The support frame of the high ribbed formwork is filled, support frame as described above is welded by bar dowel along the direction of the post-cast strip bevel edge, multiple described High ribbed formwork is by iron wire inclination binding on support frame as described above.
6. the late poured band structure of multilayer constraint antiseep as described in any one in claim 1-5, which is characterized in that the folding shape Steel plate for sealing water is in tilted layout along the direction away from the post-cast strip.
7. the late poured band structure of multilayer constraint antiseep as claimed in claim 6, which is characterized in that the folding shape steel plate for sealing water Both ends pass through multiple bar dowels respectively and be welded and fixed, and multiple bar dowels are in arranged for interval.
8. the late poured band structure of multilayer constraint antiseep as described in any one in claim 1-5, which is characterized in that the indent On be covered with the pvc pipe being cut in half, the root of the pvc pipe is fixed by mortar floating screed.
9. the late poured band structure of multilayer constraint antiseep as described in any one in claim 1-5, which is characterized in that described to catchment Hole uses sand-lime brick masonry, and the inside of the catch pit carries out plaster leveling.
10. the rear pouring tape construction method of multilayer constraint antiseep as described in any one in claim 1-5, which is characterized in that institute The resistance to compression grade for stating the pea gravel concreten in step 2) is C20.
CN201910684421.3A 2019-07-26 2019-07-26 Multi-layer restraining anti-leakage post-pouring belt construction method Active CN110387908B (en)

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CN104846849A (en) * 2014-02-17 2015-08-19 中国二十冶集团有限公司 Method for preventing basement bottom plate post-cast strip from leaking
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