CN1210184A - Isobaric tightening structure of external wall board and leakage maintaining method therefor - Google Patents
Isobaric tightening structure of external wall board and leakage maintaining method therefor Download PDFInfo
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- CN1210184A CN1210184A CN 97106592 CN97106592A CN1210184A CN 1210184 A CN1210184 A CN 1210184A CN 97106592 CN97106592 CN 97106592 CN 97106592 A CN97106592 A CN 97106592A CN 1210184 A CN1210184 A CN 1210184A
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Abstract
An isobaric sealing structure for external wall is composed of flexible seal, rigid seal and isobaric sealing cavity for eliminating the pressure difference between inside and outside of sealing layer caused by wind load, and features convenient construction, low cost, wide adaptability and repair easily. It is suitable for the water-proofing construction and repair of external wall for high building.
Description
The present invention relates to a kind of external wall plate plate seam node waterproof structure and leakage maintaining method.
Side fascia is big to being divided into two kinds of different structures both at home and abroad at present, and first kind is composite exterior wall.This wallboard waterproof of GRC lightweight exterior wall thin plate (12mm is thick) as the development of Japan AGC company mainly is to serve as a contrast one deck tar felt by carrying on the back at exterior wall, is fixed on the wood frame, and heat insulating material is filled out in the centre, interior metope gypsum plank front cover.This type of body of wall cuts off the employing multiple layers of different materials, is composited in construction.Second kind is the overall structure exterior wall, and the U.S., the Soviet Union, Germany, France, gondola side fascia with the compound prefabricated overall structure wall slope of multiple material, are directly installed in the frame structure building.Domestic overall structure side fascia adopts the big plate of pre-cast building, and (its thickness＞160mm), whole metope and door, window opening mouth are once pre-formed.These side fascia plate seam node waterproofs mainly adopt tar felt, grease seal, silica gel sealing or macromolecule waterproof filler rod.Because first kind composite construction cuts off flexibly, partial properties index such as sound insulation, insulation, fire prevention etc. can be followed according to designing requirement, and are compound by adopting different materials to carry out, relatively flexibly.But it is more to relate to material, and construction costs is bigger than normal, and the plate face is difficult to install than the weight body.Therefore, overall structure side fascia purposes is wider.The waterproof construction commonly used according to domestic and international overall structure side fascia has (1). adopt the waterstop form, or at plate seam splicing place embedding cast rubber-like elastic webbing, when conveniently installing, this waterstop structure construction embeds the filler rod jam-packed between plate and the plate, can finish this mode seals, elasticity and wallboard lateral surface compressing by filler rod play sealing function, this sealing is higher to the surface requirements of wallboard side, manufacturing defect must not be arranged, this to the light aggregate concrete material product difficulty accomplish, comparatively suitable for dry sandstone concrete.And it is high especially that the glacing flatness between wallboard and the wallboard requires, and tolerance should be controlled in the caulking material elastic range, in case when the plate that causes when frame construction and wallboard drying shrinkage stitches relative deformation and macromolecule material aging, all can produce the seepage phenomenon.(2). adopt ointment directly to stitch, this structure construction is also more convenient, and Shan cream is directly inserted in the plate gap, and gap width depends on the elongation per unit length and the plate face maximal dilation amount of encapsulant.This method sealing is higher to the weather resisteant and the bonding stability requirement between the wallboard of material, and elongation per unit length under the condition of different temperatures and stress characteristics have certain requirement.A kind of sticking seam band made from polyamine fat pitch prill is arranged again, and the use of this material is similar to adhesive tape, and the surface will be handled, be coated with interfacial agents, fully bonding again after the volatilization, this method surface requirements to the wallboard side seam easy and simple to handle is very high, surfacing, material densification, hole must not be arranged.(3). high-grade curtain wall panel seam adopts silica gel sealing.This material is filled between the plate seam, has good weather resisteant, water impermeability and non-deformability, still keeps excellent sealing under having than big displacement situation between the wallboard, but costs an arm and a leg, and is applicable to aluminium alloys or curtain wall.In case the problem of above-mentioned several hermetically-sealed construction keys is to relatively move and macromolecule material aging when the distortion of frame construction or plate seam that the wallboard drying shrinkage causes, all can cause side fascia seam anti-permeability performance to descend, and causes the generation of seepage phenomenon.And divide difficulty, especially highrise building in the maintenance work of this seepage, and should destroy the outward appearance of exterior wall, dangerous again, to seek breakthrough and tie up very much difficulty, maintenance cost is very expensive.
The objective of the invention is provides a kind of economy, reliable waterproof sealing structure and safe, practical method for maintaining thereof for the sealing of overall structure side fascia plate seam.
Of the present invention being described in detail as follows:
The leakage cause of side fascia mainly is, when frame deformation causes rigid seal layer cracking, when the flexible seal layer at this position is because of the construction wrong seal failure simultaneously, water infiltrates the wall seam along the slit under the body of wall inside and outside differential pressure effect that wind load causes, overstock in the time of to discharge when seeping water in the wall seam, the spot of spreading and sinking in appears in continuation metope in infiltration causes within the walls, even seepage.Therefore eliminating the pressure reduction of both sides inside and outside the waterproofing course that wind load causes from structure, is the main key of water proof anti-seepage.
The present invention adopts the isobaric sealing principle of eliminating the sealant inside and outside differential pressure, and the plate seam is carried out the waterproof construction design.Flexible seal layer and the combination of rigid seal layer are adopted in the sealing of plate seam, and form an isobaric annular seal space between the plate seam seal groove, constitute whole isobaric hermetically-sealed construction.Leave the seal groove of certain width between overall structure side fascia outer panel seam, general groove width can be between 10～60mm, and groove depth can be between 40～100mm, and the degree of depth also can be got 1/2nd of wallboard thickness.Flexible sealing material adopts rubber-like macromolecule closed cell foamed material to make wind-lace, as polyalkenes, polyester, rubber-like expanded material.Also can make the U-shaped wind-lace, it is strong to have non-deformability, extends under the situation of 0～20mm at the plate seam, still keep original sealing performance, the wind-lace width is generally got the seal groove width, and as adopting the U-shaped wind-lace, its wall thickness is generally got 1/2nd of seal groove width.With rubber-like bonding adhesive or polyamine lipid bonding adhesive the U-shaped wind-lace is bonded in the seal groove, as adopting polyamine lipid blowing agent better as adhesive effect, can remedies all kinds of defectives of wall panels seam, construction adaptability is strong.Wind-lace should keep certain distance apart from the seal groove bottom, can be measure-alike with groove width.Inorganic coagulation material close encapsulation notch is adopted in the wind-lace outside, as self-stressing cement or waterproofing mortar, form the rigid seal layer, 1～5 times of the general desirable groove width of rigid seal layer thickness, the rigid seal layer adopts domestic GRC material alkali-resistant glass fibre grid cloth commonly used or gauze wire cloth as reinforcing material, carries out external rendering at last.Stay in side fascia seal groove bottom a diameter be groove width 1/2nd to eighth intercommunicating pore, make isobaric annular seal space and wall outward atmosphere be communicated with.Eliminated the inside and outside differential pressure that sealant causes under blast, the effect of means of press seals such as reached.When building structure distortion or material shrink when causing local plate seam rigid seal layer be full of cracks, the flexible sealing filler rod launches to continue to play sealing function with the plate seam.And when local plate seam rigid seal layer chapped, when also there was constructional deficiency in the flexible sealing filler rod at this position, isobaric annular seal space worked.At this moment, although rainwater may infiltrate within the walls by the sealant that lost efficacy, but because the existence of isobaric annular seal space, make the sealant inside and outside differential pressure eliminate, have only little water to infiltrate in the equivalent pressure cavity, these water will be discharged outside the wall by the intercommunicating pore of equivalent pressure cavity bottom, therefore, even use through long-time, after flexible seal layer was aging, these means of press seals structures still can play reliable sealing effect.
Because it is minimum that the situation possibility of same position seepage all appears simultaneously in rigidity and flexible two sealants, seem and there is no need and in the construction each guidance tape seam sealing is all required to reserve in the bottom intercommunicating pore, when not only having taken a lot of work but also be unfavorable for outer the carrying out of decorating.Therefore, except special circumstances, can when construction, not reserve intercommunicating pore.Have only when the seepage situation appears in local plate seam, again at interior wall and an intercommunicating pore is made a call in the bottom of plate seam leakage to wall outside, that enables this position waits the densification chamber, make isobaric annular seal space and wall outward atmosphere be communicated with, reach the maintenance purpose.The hole that inboard metope causes is filled up with mortar.At this moment, wall face has an aperture neither to influence outward appearance, and maintenance work is safe and reliable again.
Because the present invention has adopted above-mentioned isobaric hermetically-sealed construction, the sealant non-deformability is strong, easy construction, and the cost of material is low, long service life.Method for maintaining safety provided by the invention, reliable does not influence outward appearance, and maintenance cost is very low.The isobaric hermetically-sealed construction of U-shaped compares with the conventional seals structure that to save construction cost about 30～50%, compares with traditional exterior wall leakage maintenance construction and saves cost more than 95%.Feasible original ten minutes bothers, dangerous exterior wall leakage maintenance work becomes the ten minutes walk away safety, does not influence the presentation quality of wall face.
The present invention is provided by following examples and accompanying drawing thereof.
Figure one. isobaric hermetically-sealed construction structure sectional view.
Figure two. flexible sealing filler rod sectional view.
Figure three. the maintenance schematic diagram of isobaric hermetically-sealed construction.
The mounting method and the inner wall panel of side fascia 1 are roughly the same: use cement mortar 11 seat slurry method constructions between wallboard and the flooring 12, tongue and groove is bonding with 107 glue mortars 2 between plate and the plate, locate with timber wedge at the top, with just fastening, asking of wallboard and wallboard, the inside line that is positioned at wall between wallboard and beam, the post is bonding with alkali-resistant glass fibre grid cloth refinforced cement mortar 3.Isobaric hermetically-sealed construction structure cross section is shown in figure one, reserve seal groove 4 at the outside left of wall, groove width is of a size of 20mm, and groove depth is of a size of 80mm, during construction, the U-shaped wind-lace figure two that polyethylene foam-material is made, in the embedding seal groove, the filler rod opening is inside, with the foam gun of polyamine fat foaming by band needle-like nozzle, insert between U-shaped filler rod 5 and the wallboard, the extrusion foaming material carries out bonding.The U-shaped wind-lace keeps the space of 20mm distance as equivalent pressure cavity 6 from the seal groove bottom.Rigid material (7) sealing is carried out in the bonding back of U-shaped wind-lace 30 minutes, promptly adopts alkali-resistant glass fibre screen cloth refinforced cement mortar to seal, and for easy construction, in order not influence decoration of exterior wall, equivalent pressure cavity is not lingered on through hole, and the equivalent pressure cavity of this moment is not enabled.Have only when the special circumstances seepage occurring, just enable when keeping in repair.Alkali-resistant glass fibre screen cloth width is 80mm.Carry out wall face at last and whitewash, rendering layer (8) selects 20mm thick.Wall construction method in the side plate seam adopts is within the walls promptly directly used the cement mortar joint filling, uses the alkali-resistant glass fibre screen cloth as reinforcing material.
When local wall panels seam needs repairing because of the seepage phenomenon appears in building, inboard at metope with having the Churn drill that length is the 250mm drill bit, the 40mm position overhead in the bottom that seepage place wall seam occurs, along with the ground angle 15 degree directions through hole (9) that to make a call to a diameter be 8mm, equivalent pressure cavity is opened, be communicated with the outer atmosphere of wall.At this moment, equivalent pressure cavity is communicated with atmosphere outside the wall through intercommunicating pore.Only the manage-style pressure is big again, and the sealant inside and outside differential pressure is eliminated, even there is a small amount of rainwater to infiltrate annular seal space, also will be discharged from outside the wall by intercommunicating pore, reaches the leakage maintaining purpose.Side cavities is filled up with self-stressing cement mortar (10) within the walls.
Claims (3)
1. isobaric hermetically-sealed construction of a side fascia and leakage maintaining method thereof is characterized in that:
(a). seal groove (4) outside is rigid seal material (7); The centre is flexible sealing material (5); Inside is an isobaric hermetically-sealed construction (figure one) that the cavity (6) that means of press seals such as is used as is formed,
(b). flexible sealing material can draw the hole expanded material by macromolecule and make U-shaped filler rod (figure two),
(c). between the side fascia outer panel seam seal groove of filling out the embedding encapsulant is arranged
(4)，
(d). isobaric hermetically-sealed construction inside can be a cavity (6) that means of press seals such as is used as that is not in communication with the outside,
(e). rigid material (7) can be by alkali-proof glass county fiber reinforcement micro-expansion cement mortar or high alumina cement mortar,
2. isobaric hermetically-sealed construction of a side fascia and leakage maintaining method thereof is characterized in that:
(a). the 40mm place overhead in the seam of a side seepage place plate within the walls bottom is the Churn drill of 250mm alloy bit with having diameter for 8mm length, makes a call to a through hole (9) along spending directions with ground angle 15,
(b). side cavities is filled up (10) with cement mortar within the walls,
3. according to the said method of claim 2, it is characterized in that: this through hole must and penetrate metope (figure three) by isobaric annular seal space (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97106592 CN1210184A (en) | 1997-09-04 | 1997-09-04 | Isobaric tightening structure of external wall board and leakage maintaining method therefor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97106592 CN1210184A (en) | 1997-09-04 | 1997-09-04 | Isobaric tightening structure of external wall board and leakage maintaining method therefor |
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| CN1210184A true CN1210184A (en) | 1999-03-10 |
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| CN 97106592 Pending CN1210184A (en) | 1997-09-04 | 1997-09-04 | Isobaric tightening structure of external wall board and leakage maintaining method therefor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864829A (en) * | 2010-06-08 | 2010-10-20 | 中国京冶工程技术有限公司 | Rainwater leakage prevention structure for precast concrete external wall panel |
| CN101560838B (en) * | 2009-05-25 | 2011-03-02 | 东莞市彩丽建筑维护技术有限公司 | Method for preventing and controlling water leakage in building wall bodies |
| CN102022009A (en) * | 2010-11-12 | 2011-04-20 | 上海市第二建筑有限公司 | Non-destructive dampproof course repairing method and rear dampproof course |
| CN103074957A (en) * | 2013-02-24 | 2013-05-01 | 彭泓越 | Incomplete butt-type wallboard and construction method |
| CN104895200A (en) * | 2015-05-06 | 2015-09-09 | 苏州建鑫建设集团有限公司 | Slab joint structure of waterproof external wallboard |
| CN105484371A (en) * | 2016-01-12 | 2016-04-13 | 国网上海市电力公司 | Waterproof structure of prefabricated external wall boards of transformer substation |
| CN107642180A (en) * | 2017-08-30 | 2018-01-30 | 潘旭鹏 | A kind of precast facade |
| CN110656705A (en) * | 2019-10-12 | 2020-01-07 | 华北理工大学 | Mounting structure of composite wallboard based on assembly type steel structure building, composite wallboard and construction method of composite wallboard |
| CN112065115A (en) * | 2020-08-05 | 2020-12-11 | 上海建工二建集团有限公司 | Sealing method for prefabricated clear water stand plate |
-
1997
- 1997-09-04 CN CN 97106592 patent/CN1210184A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560838B (en) * | 2009-05-25 | 2011-03-02 | 东莞市彩丽建筑维护技术有限公司 | Method for preventing and controlling water leakage in building wall bodies |
| CN101864829A (en) * | 2010-06-08 | 2010-10-20 | 中国京冶工程技术有限公司 | Rainwater leakage prevention structure for precast concrete external wall panel |
| CN101864829B (en) * | 2010-06-08 | 2011-11-30 | 中国京冶工程技术有限公司 | Rainwater leakage prevention structure for precast concrete external wall panel |
| CN102022009A (en) * | 2010-11-12 | 2011-04-20 | 上海市第二建筑有限公司 | Non-destructive dampproof course repairing method and rear dampproof course |
| CN102022009B (en) * | 2010-11-12 | 2012-11-28 | 上海市第二建筑有限公司 | Non-destructive dampproof course repairing method and rear dampproof course |
| CN103074957A (en) * | 2013-02-24 | 2013-05-01 | 彭泓越 | Incomplete butt-type wallboard and construction method |
| CN104895200A (en) * | 2015-05-06 | 2015-09-09 | 苏州建鑫建设集团有限公司 | Slab joint structure of waterproof external wallboard |
| CN105484371A (en) * | 2016-01-12 | 2016-04-13 | 国网上海市电力公司 | Waterproof structure of prefabricated external wall boards of transformer substation |
| CN107642180A (en) * | 2017-08-30 | 2018-01-30 | 潘旭鹏 | A kind of precast facade |
| CN110656705A (en) * | 2019-10-12 | 2020-01-07 | 华北理工大学 | Mounting structure of composite wallboard based on assembly type steel structure building, composite wallboard and construction method of composite wallboard |
| CN112065115A (en) * | 2020-08-05 | 2020-12-11 | 上海建工二建集团有限公司 | Sealing method for prefabricated clear water stand plate |
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