CN110700268A - Construction method for backfilling foundation pit at post-cast strip of basement wall plate in advance - Google Patents
Construction method for backfilling foundation pit at post-cast strip of basement wall plate in advance Download PDFInfo
- Publication number
- CN110700268A CN110700268A CN201910973076.5A CN201910973076A CN110700268A CN 110700268 A CN110700268 A CN 110700268A CN 201910973076 A CN201910973076 A CN 201910973076A CN 110700268 A CN110700268 A CN 110700268A
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- Prior art keywords
- wall
- construction
- post
- backfilling
- basement
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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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective 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
- E02D31/025—Draining membranes, sheets or fabric specially adapted therefor, e.g. with dimples
Abstract
The invention discloses a construction method for backfilling foundation pits in a post-cast strip of a basement wall panel in advance, aiming at the defects and the defects of the conventional post-cast strip treatment construction technical method, the construction technical method for backfilling the foundation pits of the basement wall panel in advance is adopted, is simple, convenient and effective, can retain soil and prevent water, and is used for manufacturing a coiled material waterproof and protective layer in advance. The method overcomes the defect that the later poured strip of the basement wall plate is filled with the sand and the mud, promotes the construction of the superstructure to be quickly erected, ensures that various raw materials and commercial concrete enter a field smoothly without blockage, and comprehensively implements quality, safety and civilized construction measures, finally achieves the aim of saving the construction period, and ensures that the quality, safety and civilized construction targets are implemented smoothly as expected.
Description
Technical Field
The invention relates to a construction method for reserving a post-pouring belt at a wall plate of a basement structure of a civil high-rise residence or a public building to form a waterproof and protective layer of a coiled material in advance so as to realize earth backfilling of basement foundation pits in advance, in particular to a construction method for backfilling foundation pits at the post-pouring belt of the basement wall plate in advance.
Background
At present, in the long-term construction practice of reserving a post-cast strip at the wall plate of the basement structure of a civil high-rise residence or a public building, the post-cast strip can be poured only after 60 days of design requirements or capping of an upper structure (generally 3-6 months) according to the design drawing requirements. During the long waiting, the basement foundation pit is exposed outside for a long time, and the slope collapses and the post-cast strip is filled with mud and sand through washing due to sunshine, rain and water bubbles. Therefore, a lot of repeated investment and economic waste are brought to the safe maintenance of the foundation pit and the future pouring of the post-cast strip. Meanwhile, a great deal of difficulty and inconvenience are brought to quality, safety and civilized construction management and control, the whole construction site is very disordered in management and control, the upper structure construction is too forthcoming to be normally erected, steel, commercial concrete and the like are inconvenient to enter the site, and a great deal of unforeseen hidden danger is brought to the whole construction site for orderly management and control. Therefore, only the invention provides a simple, convenient and effective construction technical method which can prevent soil and water, make a coiled material waterproof layer at the post-cast strip in advance and realize the earth backfill of the basement foundation pit in advance, so as to ensure that no sand enters the post-cast strip, the upper structure construction is large, the facility is smoothly and quickly erected, the quality, safety and civilized construction control measures are comprehensively implemented, various materials and commercial concrete smoothly enter the field without resistance, and finally the construction period is saved, and the quality, safety and civilized construction targets are ensured to be smoothly realized in time.
The post-pouring belt arranged on the wall panel of the basement structure can be poured at least 60 days or after the upper structure is capped, so that the backfilling time of the foundation pit earthwork of the basement is prolonged, and the adopted construction technical method is a waterproof coiled material and a protective layer in advance so as to realize the backfilling of the foundation pit earthwork of the basement in advance.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: on the premise of meeting the design requirement of '60 days or capping of an upper structure', the post-cast strip of the outer wall plate of the basement can not only retain soil, but also prevent water, ensure that the post-cast strip is not filled with sand, smoothly backfill earthwork of the foundation pit, and finally achieve the aim of saving the construction period, and realize the expected target value of quality, safety and civilized construction in term.
In order to solve the technical problems, the inventor obtains the technical scheme of the invention through practice and summary, and the invention discloses a construction method for backfilling foundation pits at post-cast strip positions of basement wall boards in advance, which comprises the following steps:
the method comprises the following steps: after concrete pouring of the basement wall slab top plate structure is finished, when the form removal strength is achieved, the support frame and the form are dismantled, material waste is thoroughly cleaned, a semi-circular brick wall foundation is built at the post-cast strip of the basement outer side wall slab, 3 bricks are built on a 480mm wall foundation, 3 bricks are built on a 370mm wall, and then a 240mm wall is built until the top plate surface is parallel and level;
step two: the outer side surface of the brick wall is painted by cement waterproof mortar, and is required to be smooth;
step three: after the wall surface of the painted brick is dried, brushing a binder, paving and sticking a coiled material for preventing water until the top plate surface is adhered to a plane by 300mm, reinforcing the other corner by 400mm, and keeping the wall surface at 200mm and the top plate at 200 mm;
step four: and after the waterproof layer of the coiled material is qualified through inspection, paving and pasting a protective layer of the extruded sheet, and after the waterproof layer of the coiled material is qualified through inspection, backfilling earthwork.
And further, doping 3% of waterproof powder into the cement waterproof mortar in the second step.
And further, the proportion of the cement waterproof mortar in the second step is 1: 2.5.
Compared with the prior art, the invention can obtain the following technical effects:
1. after the construction of the top plate of the basement wall panel is finished and the form removal strength is reached, the form removal, cleaning and red brick retaining waterproof wall building can be carried out, the roll waterproof layer and the protective layer are painted, and the earth backfilling can be carried out, so that the construction period is saved, and the expected target value of quality, safety and civilized construction is realized.
2. According to the invention, the earth-retaining waterproof brick wall is made in advance at the post-cast strip of the basement wall plate, and the earth backfilling is carried out in advance, so that the construction period is finally saved, the quality, safety and civilized construction targets are realized, the construction continuity is improved, the construction efficiency is improved, the engineering cost is reduced, and good economic benefit and social reputation are obtained.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a cross-sectional view A-A of the present invention;
fig. 2 is a plan view of the present invention.
In the figure: 1. the concrete slab comprises a basement bottom plate, 2 parts of post-pouring belts, 3 parts of wall panels, 4 parts of soil-retaining waterproof brick walls, 5 parts of water-stopping steel plates, 6 parts of a basement top plate, 7 parts of a painted surface layer, 8 parts of a coiled material waterproof layer, 9 parts of an extruded sheet protective layer, 10 parts of a foundation pit slope, 11 parts of earthwork backfilling and 12 parts of a coiled material binder.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The application of the principles of the present invention will be further described with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1-2:
the method comprises the following steps: basement wall board 3, 6 structural concrete of roof pour and finish, when reaching the form removal intensity, demolish support shelf and template to thoroughly clean up whole material and rubbish, at 3 back-cast strip 2 departments of basement outer side wall board, step semicircle retaining waterproof brick wall 4, step behind the 3 leather bricks of 480mm wall base promptly, step 3 leather bricks of 370mm wall base, step 240mm wall till 6 parallel and level of roof after that.
Step two: then, the outer side 7 of the brick wall is painted by 1:2.5 cement waterproof mortar (doped with 3% waterproof powder), and the brick wall is required to be flat, smooth and clean.
Step three: after the painted brick wall surface 7 is dried, the binder 12 is brushed, the roll waterproof layer 8 is paved and stuck until the top plate 6 is connected and stuck with 300mm to the plane, the corner is reinforced with 400mm, the vertical surface (the wall surface) is 200mm, and the plane (the top panel) is 200 mm.
Step four: after the waterproof layer 8 of the coiled material is qualified through inspection, the protective layer 9 of the extruded sheet is laid and pasted, and after the lattice is closed through experience, earthwork backfilling 11 can be carried out, so that the purposes of saving the construction period and backfilling in advance are achieved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (3)
1. The construction method for backfilling the foundation pit at the later poured strip of the basement wall plate in advance is characterized by comprising the following steps of:
the method comprises the following steps: after concrete pouring of the basement wall slab top plate structure is finished, when the form removal strength is achieved, the support frame and the form are dismantled, material waste is thoroughly cleaned, a semi-circular brick wall foundation is built at the post-cast strip of the basement outer side wall slab, 3 bricks are built on a 480mm wall foundation, 3 bricks are built on a 370mm wall, and then a 240mm wall is built until the top plate surface is parallel and level;
step two: the outer side surface of the brick wall is painted by cement waterproof mortar, and is required to be smooth;
step three: after the wall surface of the painted brick is dried, brushing a binder, paving and sticking a coiled material for preventing water until the top plate surface is adhered to a plane by 300mm, reinforcing the other corner by 400mm, and keeping the wall surface at 200mm and the top plate at 200 mm;
step four: and after the waterproof layer of the coiled material is qualified through inspection, paving and pasting a protective layer of the extruded sheet, and after the waterproof layer of the coiled material is qualified through inspection, backfilling earthwork.
2. The construction method for backfilling foundation pits at the post-cast strip of the basement wall plate according to claim 1, characterized in that: and step two, mixing 3% of waterproof powder into the cement waterproof mortar.
3. The construction method for backfilling foundation pits at the post-cast strip of the basement wall plate according to claim 1, characterized in that: and the proportion of the cement waterproof mortar in the second step is 1: 2.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910973076.5A CN110700268A (en) | 2019-10-14 | 2019-10-14 | Construction method for backfilling foundation pit at post-cast strip of basement wall plate in advance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910973076.5A CN110700268A (en) | 2019-10-14 | 2019-10-14 | Construction method for backfilling foundation pit at post-cast strip of basement wall plate in advance |
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| CN110700268A true CN110700268A (en) | 2020-01-17 |
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| CN201910973076.5A Pending CN110700268A (en) | 2019-10-14 | 2019-10-14 | Construction method for backfilling foundation pit at post-cast strip of basement wall plate in advance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111779013A (en) * | 2020-08-18 | 2020-10-16 | 中国十七冶集团有限公司 | Method for backfilling below terrace of upper layer of basement roof of high-rise building in advance |
| CN114855884A (en) * | 2022-06-09 | 2022-08-05 | 安徽建工集团股份有限公司总承包分公司 | Construction method facilitating early backfill of post-cast strip of underground foundation structure |
Citations (5)
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| JP2008075246A (en) * | 2006-09-19 | 2008-04-03 | Kajima Corp | Water cut-off structure |
| CN202298670U (en) * | 2011-10-20 | 2012-07-04 | 中天建设集团有限公司天津分公司 | Post-poured strip protection wall for basement outer door |
| CN203247838U (en) * | 2013-05-29 | 2013-10-23 | 江苏省华建建设股份有限公司 | Fully-buried basement side wall post-pouring belt advance water stop formwork |
| CN107542114A (en) * | 2016-06-28 | 2018-01-05 | 五冶集团上海有限公司 | Shift to an earlier date the method for backfill at a kind of basement wall post-cast strip |
| CN208309651U (en) * | 2018-05-04 | 2019-01-01 | 中国建筑第八工程局有限公司 | Basement post-pouring zone structure |
-
2019
- 2019-10-14 CN CN201910973076.5A patent/CN110700268A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008075246A (en) * | 2006-09-19 | 2008-04-03 | Kajima Corp | Water cut-off structure |
| CN202298670U (en) * | 2011-10-20 | 2012-07-04 | 中天建设集团有限公司天津分公司 | Post-poured strip protection wall for basement outer door |
| CN203247838U (en) * | 2013-05-29 | 2013-10-23 | 江苏省华建建设股份有限公司 | Fully-buried basement side wall post-pouring belt advance water stop formwork |
| CN107542114A (en) * | 2016-06-28 | 2018-01-05 | 五冶集团上海有限公司 | Shift to an earlier date the method for backfill at a kind of basement wall post-cast strip |
| CN208309651U (en) * | 2018-05-04 | 2019-01-01 | 中国建筑第八工程局有限公司 | Basement post-pouring zone structure |
Non-Patent Citations (1)
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| 《建筑工人职业技能培训教材》编委会: "《防水工》", 30 September 2016, 中国建材工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111779013A (en) * | 2020-08-18 | 2020-10-16 | 中国十七冶集团有限公司 | Method for backfilling below terrace of upper layer of basement roof of high-rise building in advance |
| CN114855884A (en) * | 2022-06-09 | 2022-08-05 | 安徽建工集团股份有限公司总承包分公司 | Construction method facilitating early backfill of post-cast strip of underground foundation structure |
| CN114855884B (en) * | 2022-06-09 | 2024-03-29 | 安徽建工集团股份有限公司总承包分公司 | Construction method for facilitating advanced backfilling of post-cast strip of underground foundation structure |
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Application publication date: 20200117 |
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