CN105839677A - Advanced water prevention construction process for post-cast strip of side wall of basement - Google Patents
Advanced water prevention construction process for post-cast strip of side wall of basement Download PDFInfo
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- CN105839677A CN105839677A CN201610175122.3A CN201610175122A CN105839677A CN 105839677 A CN105839677 A CN 105839677A CN 201610175122 A CN201610175122 A CN 201610175122A CN 105839677 A CN105839677 A CN 105839677A
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- cast strip
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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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
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- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses an advanced water prevention construction process for a post-cast strip of the side wall of a basement. The advanced water prevention construction process comprises the steps of detaching a formwork, cleaning the post-cast strip, prefabricating a reinforced concrete baffle, mounting the baffle, smearing the outer side of the baffle with lime, and conducting construction on a waterproof roll and a protection wall, wherein construction on the waterproof roll and the protection wall can be conducted seven days after the outer side of the baffle is smeared with the lime. The construction process is short in construction period, the later construction is not affected, the post-cast strip can be protected, and a retaining wall is high in strength, good in stability and can bear impact force generated during earthwork backfilling; construction difficulty is low; and the problems that an existing construction process is long in construction period, influence on the later construction is large, protection of the post-cast strip is not easy, and a retaining wall is low in strength, poor in stability and extremely prone to collapsing under earthwork impact in the earthwork backfilling process are solved.
Description
Technical field
The present invention relates to a kind of construction process, be specifically related to the advanced Waterproof Construction Technique in a kind of sidewall of basement post-cast strip.
Background technology
Post-cast strip is for preventing monolithic reinforced concrete structure owing to autogenous shrinkage is uneven or settles uneven issuable harmful cracks in construction, according to design or job specfication requirement, stays, in sole plate, wall, beam relevant position, the temporary construction seam set.Post-cast strip is not only can to solve differential settlement but also can reduce the effective measures of shrinkage stress, therefore applies more in engineering.If structure is temporarily divided into stem portion by post-cast strip, shrinks through component inside, water again after the some time and smash this construction joint concrete, structure is linked to be the area of entirety.When the time that pours of post-cast strip preferably selects temperature relatively low, available joints cement or cement are mixed the concrete of trace aluminium powder, its strength grade should be higher one-level than component strength, prevent from occurring between New-old concrete crack, cause weak part, the position of post-cast strip is set it should also be taken into account that the different Elements Of Expense of the measures such as template.
The most waterproof construction technology in existing sidewall of basement post-cast strip mainly has a following two:
The first, according to normal sequence of construction, after post-cast strip reaches the off-period that design requires, by reinforcing bar binding, formwork, pour concrete, form removal, maintenance, waterproof construction, the construction of protection wall；This construction technology long construction period, big on subsequent construction impact, the protection to post-cast strip is difficult to.It is suitable for construction period long, the engineering that job site is broad.
The second, uses brick barricade, after i.e. sidewall has been constructed, uses brick barricade outside post-cast strip, and plaster in outside, then construction waterproof layer.The post-cast strip cleaned out, when construction, is easily caused secondary pollution and is not easily cleaned by this construction technology, and the intensity of barricade is the highest, poor stability, when backfilling of earthwork, easily collapses through the impact of the earthwork.It is applicable to basement depth as shallow (within 4 meters).
Summary of the invention
The technical problem to be solved is the long construction period of existing construction technology; big on subsequent construction impact; protection to post-cast strip is difficult to; the intensity of barricade is the highest; poor stability; when backfilling of earthwork; easily collapse through the impact of the earthwork, it is therefore intended that provide a kind of sidewall of basement post-cast strip advanced Waterproof Construction Technique, solve the long construction period of existing construction technology; big on subsequent construction impact; protection to post-cast strip is difficult to, and the intensity of barricade is the highest, poor stability; when backfilling of earthwork, through the problem that the impact of the earthwork is easily collapsed.
The present invention is achieved through the following technical solutions:
The advanced Waterproof Construction Technique in a kind of sidewall of basement post-cast strip, comprises the following steps:
(1) form removal and cleaning post-cast strip: when basement construction, in order to pursue the accurate of indwelling position, post-cast strip, use steel wire as the formwork erection of end, post-cast strip in both sides, post-cast strip, when sidewall has constructed beginning form removal, unnecessary steel wire is rejected, and the stream slurry in post-cast strip and the concrete having more need to be cut clean and dig straight, by clean for original concrete rubbish complete liquidation.
(2) reinforced concrete baffle plate is prefabricated: baffle length adds the bearing length of 250mm, i.e. post-cast strip developed width+500mm according to the every limit of post-cast strip width, and barrier width is 500mm, and thickness is 80mm, and it is two-way to join Ф 8mm@150 reinforcing bar, concrete strength grade C25；At two ends when baffle plate is prefabricated, i.e. the installing hole of each reserved 2 Ф 14mm at edge 100mm, installing hole spacing is 150mm.
(3) baffle plate is installed: baffle plate is installed and need to be constructed after sidewall concrete strength reaches design strength 75% again, and baffle plate is arranged on side-wall outer side.Installing from bottom to up, on first piece of direct bearing plate, during installation, both sides bury the rearmounted crab-bolt of Ф 12mm on sidewall underground according to position of mounting hole, baffle-panels uses 50*50*3mm steel plate packing ring, fastens by fastening bolt；First piece of baffle plate just can carry out the installation of second piece after firmly installing, by that analogy, straight way all installs.
(4) plaster outside baffle plate: can plaster after baffle plate installation.Mortar uses 1:3 cement mortar, depth of plastering 20mm；The joint of baffle plate two ends and sidewall junction need to do oblique angle at 45 °, to meet the drop-over of waterproof roll.
(5) waterproof roll and protection wall construction: waterproof roll and protection wall construction plastered outside baffle plate seven days after carry out, with the line of ink marker by the position of post-cast strip snap the line on the protection layer.By waterstop by post-cast strip direction of extension paving, every waterstop stretches into first pouring concrete 1/2 width, the centrage allowing waterstop during paving overlaps with the played line of ink marker, reserved expansion sealing strip detent, toasts bottom surface and the angle of basic unit of coiled material with flame gun or blowtorch, and blowtorch is away from intersection about 300mm, the bitumen layer making coiled material surface liquefies, coiled material is rolled forward on baking limit, limit, rolls subsequently so that it is be firmly bonded with basic unit or with coiled material；During construction of bottom plates, at the position that concrete interface design in both sides, post-cast strip requires or base plate thickness of slab 1/2, the elongated groove of indwelling, in order to fixed expansion sealing rod makes it not be subjected to displacement.Depth of groove is advisable with the 1/2 of expansion sealing strip diameter of section, and recess width is advisable with 1.2～1.5 times of sealing rod diameter, and groove placement method is nail batten on alter-pouring strips mould plate, and groove indwelling should be straight.During treatment of construction joints, check and repair groove.Utilize the cementability of sealing rod self, and with its matching gel stick, sealing rod is bonded at interface, post-cast strip along post-cast strip direction of extension.Overlapping splice length 30～50mm, firm with tinsel colligation, and nail on cement nail in the middle part of overlap joint.
Relative to traditional construction technology, it mainly has two kinds of construction methods, the first, according to normal sequence of construction, after post-cast strip reaches the off-period that design requires, by reinforcing bar binding, formwork, pour concrete, form removal, maintenance, waterproof construction, the construction of protection wall；This construction technology long construction period, big on subsequent construction impact, the protection to post-cast strip is difficult to.It is suitable for construction period long, the engineering that job site is broad.
The second, uses brick barricade, after i.e. sidewall has been constructed, uses brick barricade outside post-cast strip, and plaster in outside, then construction waterproof layer.The post-cast strip cleaned out, when construction, is easily caused secondary pollution and is not easily cleaned by this construction technology, and the intensity of barricade is the highest, poor stability, when backfilling of earthwork, easily collapses through the impact of the earthwork, it is applicable to basement depth as shallow, the especially degree of depth basement within 4 meters.
But utilize this construction technology, then can solve the problem that the problems referred to above, the post-cast strip produced in work progress, post-cast strip is for preventing monolithic reinforced concrete structure owing to autogenous shrinkage is uneven or settles uneven issuable harmful cracks in construction, according to design or job specfication requirement, stay, in sole plate, wall, beam relevant position, the temporary construction seam set.nullPost-cast strip is not only can to solve differential settlement but also can reduce the effective measures of shrinkage stress，Therefore apply more in engineering，This programme passes through arranged rational process sequence，Can greatly shorten construction period，For construction，It is individually used for the limited time of work progress，Other preparatory stage losing time mainly to be construction、That causes in other work progress interferes，Such as equipment or site clearing etc.，The most there are not these problems in this programme，It does not has particular/special requirement for construction site，And when construction, particular demands be there is no for the ornaments between equipment or accumulation，Remove particularly relevant operation，The work of other operations just can be carried out accordingly when carrying out certain operation，It is greatly shortened the middle waiting time，Be conducive to the reduction of erection time，And this programme be construction time，It is to use concrete reinforcement to make baffle plate，It is sized to unified between baffle plate，Fix convenient when mounted，The intensity of baffle plate is high，Stability is high，And secondary pollution will not be caused in the post-cast strip cleaned out，When backfilling of earthwork，The higher volume of earthwork can be born，Withstand the impact of the earthwork，It is not easy to collapse，Safer，During for basement construction that some degree of depth are deeper，Also meet and use.
The present invention compared with prior art, has such advantages as and beneficial effect: the short construction period of this construction technology, on subsequent construction without impact; can form the protection to post-cast strip, barricade intensity is high, good stability; impulsive force during backfilling of earthwork can be born, and difficulty of construction is low, solve the long construction period of existing construction technology; big on subsequent construction impact; protection to post-cast strip is difficult to, and the intensity of barricade is the highest, poor stability; when backfilling of earthwork, through the problem that the impact of the earthwork is easily collapsed.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by the embodiment of the present invention, constitutes the part of the application, is not intended that the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram that baffle plate of the present invention is installed；
Fig. 2 is the side view of Fig. 1；
Fig. 3 is schematic diagram of plastering outside baffle plate.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, and the exemplary embodiment of the present invention and explanation thereof are only used for explaining the present invention, not as a limitation of the invention.
Embodiment:
As shown in Figure 1, Figure 2, Figure 3 shows, the advanced Waterproof Construction Technique in a kind of sidewall of basement post-cast strip, comprise the following steps:
(1) form removal and cleaning post-cast strip: use steel wire as the formwork erection of end, post-cast strip both sides, post-cast strip, when sidewall has constructed beginning form removal, unnecessary steel wire is rejected, and the stream slurry in post-cast strip and the concrete having more need to be cut clean and dig straight, by clean for original concrete rubbish complete liquidation；
(2) reinforced concrete baffle plate is prefabricated: baffle length adds the bearing length of 250mm, i.e. post-cast strip developed width+500mm according to the every limit of post-cast strip width, and barrier width is 500mm, thickness is 80mm, joining a diameter of 8mm, the reinforcing bar of a length of 150mm, concrete strength grade is C25.At the installing hole of reserved 2 a diameter of 14mm each at edge 100mm when baffle plate is prefabricated, installing hole spacing is 150mm；
(3) baffle plate is installed: baffle plate is installed and need to be constructed after sidewall concrete strength reaches design strength 75% again, baffle plate is arranged on side-wall outer side, install from bottom to up, on first piece of direct bearing plate, during installation, both sides bury the rearmounted crab-bolt of a diameter of 12mm on sidewall underground according to position of mounting hole, use 50*50*3mm steel plate packing ring in baffle-panels, fasten by fastening bolt；First piece of baffle plate just can carry out the installation of second piece after firmly installing, by that analogy, straight way all installs；
(4) plaster outside baffle plate: can plaster after baffle plate installation, mortar employing water: cement: sand=0.6:1:3 mixes, depth of plastering 20mm；The joint of baffle plate two ends and sidewall junction need to do oblique angle at 45 °, to meet waterproof drop-over；
null(5) waterproof roll and protection wall construction: treat that baffle plate plastering construction completes maintenance 7 days，After coat of plaster is completely dried，I.e. can carry out construction and the construction of waterproofing protection wall of waterproof layer，With the line of ink marker by the position of post-cast strip snap the line on the protection layer，By waterstop by post-cast strip direction of extension paving，Every waterstop stretches into first pouring concrete 1/2 width，The centrage allowing waterstop during paving overlaps with the played line of ink marker，Reserved expansion sealing strip detent，Bottom surface and the angle of basic unit of coiled material is toasted with flame gun or blowtorch，Blowtorch is away from intersection about 300mm，The bitumen layer making coiled material surface liquefies，Coiled material is rolled forward on baking limit, limit，Roll subsequently，It is made to be firmly bonded with basic unit or with coiled material: during construction of bottom plates，At the position that concrete interface design in both sides, post-cast strip requires or base plate thickness of slab 1/2，The elongated groove of indwelling，So that fixed expansion sealing rod makes it not be subjected to displacement，Depth of groove is the 1/2 of expansion sealing strip diameter of section，Recess width is 1.2～1.5 times of sealing rod diameter，Utilize the cementability of sealing rod self，And with its matching gel stick，Sealing rod is bonded at interface, post-cast strip along post-cast strip direction of extension，Overlapping splice length 30～50mm，Firm with tinsel colligation，And nail on cement nail in the middle part of overlap joint.
Relative to traditional construction technique, the short construction period of this technique, and construction quality also is able to be controlled, after using prefabricated baffle plate to install, being favorably improved the intensity of baffle plate, stability is higher, can bear bigger impulsive force when backfilling of earthwork, deeper basement is also suitable, increases range of application.
In constructing in bolune square, Pixian County, this construction technology is utilized to construct, after sidewall of basement concrete placings, in time sidewall post-cast strip is cleaned out, prefabricated reinforced concrete plate is installed outside post-cast strip, surface uses cement sand plaster, makes 45 degree of inclined-planes with sidewall junction, and when waterproof construction, post-cast strip can be carried out with sidewall simultaneously；This construction technology can form protection to post-cast strip, has no effect on foundation ditch backfill and the construction of post-cast strip closing step.After utilizing this construction technology to construct, its construction period has saved the time of 1/3rd relative to the first construction method of tradition, and the construction space that occupies is little, be conducive to subsequent construction, subsequent construction will not be caused interference, so can shorten further again for construction period, cut down the number of intermediate links the time wasted, and it can form the protection to post-cast strip, the structural integrity using the barricade that this technique makes is high, barricade intensity is high, good stability, impulsive force during backfilling of earthwork can be born, all can be suitable for when deeper or shallower basement construction, and difficulty of construction is low, be conducive to the control to construction quality, reduce the labor intensity of workmen, it can be avoided that occur unexpectedly during construction.
Above-described detailed description of the invention; the purpose of the present invention, technical scheme and beneficial effect are further described; it is it should be understood that; the foregoing is only the detailed description of the invention of the present invention; the protection domain being not intended to limit the present invention; all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included within the scope of the present invention.
Claims (3)
1. the advanced Waterproof Construction Technique in sidewall of basement post-cast strip, it is characterised in that comprise the following steps:
(1) form removal and cleaning post-cast strip: use steel wire as the formwork erection of end, post-cast strip both sides, post-cast strip, when sidewall has constructed beginning form removal, unnecessary steel wire is rejected, and the stream slurry in post-cast strip and the concrete having more need to be cut clean and dig straight, by clean for original concrete rubbish complete liquidation；
(2) reinforced concrete baffle plate is prefabricated: baffle length adds the bearing length of 250mm according to the every limit of post-cast strip width, and at the installing hole of reserved 2 a diameter of 14mm each at edge 100mm when baffle plate is prefabricated, installing hole spacing is 150mm；
(3) baffle plate is installed: baffle plate is installed and need to be constructed after sidewall concrete strength reaches design strength 75% again, baffle plate is arranged on side-wall outer side, install from bottom to up, on first piece of direct bearing plate, during installation, both sides bury the rearmounted crab-bolt of a diameter of 12mm on sidewall underground according to position of mounting hole, use 50*50*3mm steel plate packing ring in baffle-panels, fasten by fastening bolt；First piece of baffle plate just can carry out the installation of second piece after firmly installing, by that analogy, straight way all installs；
(4) plaster outside baffle plate: can plaster after baffle plate installation, mortar employing water: cement: sand=0.6:1:3 mixes, depth of plastering 20mm；The joint of baffle plate two ends and sidewall junction need to do oblique angle at 45 °, to meet waterproof drop-over；
(5) waterproof roll and protection wall construction: with the line of ink marker by the position of post-cast strip snap the line on the protection layer; by waterstop by post-cast strip direction of extension paving; every waterstop stretches into first pouring concrete 1/2 width; the centrage allowing waterstop during paving overlaps with the played line of ink marker; reserved expansion sealing strip detent; bottom surface and the angle of basic unit of coiled material is toasted with flame gun or blowtorch; blowtorch is away from intersection about 300mm; the bitumen layer making coiled material surface liquefies; coiled material is rolled forward on baking limit, limit; roll subsequently so that it is be firmly bonded with basic unit or with coiled material；During construction of bottom plates, at the position that concrete interface design in both sides, post-cast strip requires or base plate thickness of slab 1/2, the elongated groove of indwelling, so that fixed expansion sealing rod makes it not be subjected to displacement, depth of groove is the 1/2 of expansion sealing strip diameter of section, recess width is 1.2～1.5 times of sealing rod diameter, utilize the cementability of sealing rod self, and with its matching gel stick, sealing rod is bonded at interface, post-cast strip along post-cast strip direction of extension, overlapping splice length 30～50mm, firm with tinsel colligation, and nail on cement nail in the middle part of overlap joint.
The advanced Waterproof Construction Technique in a kind of sidewall of basement post-cast strip the most according to claim 1, it is characterised in that carry out after having plastered outside baffle plate seven days of described waterproof roll and protection wall construction.
The advanced Waterproof Construction Technique in a kind of sidewall of basement post-cast strip the most according to claim 1, it is characterised in that described baffle length is that post-cast strip width adds 500mm, width is 500mm, thickness is 80mm, joins a diameter of 8 reinforcing bars two-way for@150, and concrete strength grade is C25.
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| CN201610175122.3A CN105839677A (en) | 2016-03-25 | 2016-03-25 | Advanced water prevention construction process for post-cast strip of side wall of basement |
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| CN201610175122.3A CN105839677A (en) | 2016-03-25 | 2016-03-25 | Advanced water prevention construction process for post-cast strip of side wall of basement |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106337444A (en) * | 2016-08-26 | 2017-01-18 | 陕西建工第八建设集团有限公司 | Basic raft water-proof coiled material raft-reserving protective construction method |
| CN106836515A (en) * | 2016-12-27 | 2017-06-13 | 中建四局第五建筑工程有限公司 | A kind of method for accelerating outer wall of basement backfilling of earthwork post-cast strip |
| CN110761422A (en) * | 2019-10-09 | 2020-02-07 | 中国二十冶集团有限公司 | Protection method for reserved lap joint after horizontal laying of waterproof coiled material |
| CN110965423A (en) * | 2019-12-17 | 2020-04-07 | 中交路桥华北工程有限公司 | Anti-crack construction method for asphalt pavement splicing |
| CN111074951A (en) * | 2019-12-31 | 2020-04-28 | 越烽建设集团有限公司 | Post-cast strip structure and construction process thereof |
| CN113944240A (en) * | 2021-09-24 | 2022-01-18 | 上海宝冶集团有限公司 | Fixed prefabricated structure for sealing basement outer wall post-cast strip in advance and construction method thereof |
| CN115787744A (en) * | 2022-11-25 | 2023-03-14 | 中国五冶集团有限公司 | Box-type foundation basement advanced water stop structure |
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| JP2003328381A (en) * | 2002-05-10 | 2003-11-19 | Sumitomo Rubber Ind Ltd | Flexible rubber joint and its mounting structure and its constructing method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106337444A (en) * | 2016-08-26 | 2017-01-18 | 陕西建工第八建设集团有限公司 | Basic raft water-proof coiled material raft-reserving protective construction method |
| CN106836515A (en) * | 2016-12-27 | 2017-06-13 | 中建四局第五建筑工程有限公司 | A kind of method for accelerating outer wall of basement backfilling of earthwork post-cast strip |
| CN110761422A (en) * | 2019-10-09 | 2020-02-07 | 中国二十冶集团有限公司 | Protection method for reserved lap joint after horizontal laying of waterproof coiled material |
| CN110965423A (en) * | 2019-12-17 | 2020-04-07 | 中交路桥华北工程有限公司 | Anti-crack construction method for asphalt pavement splicing |
| CN111074951A (en) * | 2019-12-31 | 2020-04-28 | 越烽建设集团有限公司 | Post-cast strip structure and construction process thereof |
| CN113944240A (en) * | 2021-09-24 | 2022-01-18 | 上海宝冶集团有限公司 | Fixed prefabricated structure for sealing basement outer wall post-cast strip in advance and construction method thereof |
| CN115787744A (en) * | 2022-11-25 | 2023-03-14 | 中国五冶集团有限公司 | Box-type foundation basement advanced water stop structure |
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Application publication date: 20160810 |