CN103410173A - Construction method for vertical post pouring belt plugging of underground structural outer wall - Google Patents
Construction method for vertical post pouring belt plugging of underground structural outer wall Download PDFInfo
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- CN103410173A CN103410173A CN2013103693229A CN201310369322A CN103410173A CN 103410173 A CN103410173 A CN 103410173A CN 2013103693229 A CN2013103693229 A CN 2013103693229A CN 201310369322 A CN201310369322 A CN 201310369322A CN 103410173 A CN103410173 A CN 103410173A
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- 238000010276 construction Methods 0.000 title abstract description 35
- 239000004567 concrete Substances 0.000 claims abstract description 58
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 18
- 238000005266 casting Methods 0.000 claims description 59
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 238000004078 waterproofing Methods 0.000 claims description 9
- 239000011083 cement mortar Substances 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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Abstract
The invention discloses a construction method for vertical post pouring belt plugging of an underground structural outer wall. The construction method for the vertical post pouring belt plugging of the underground structural outer wall comprises sequentially arranging concrete prefabricated cover plates on the external sides of vertical post pouring belts of the outer wall and plugging the gap between the upper concrete prefabricated cover plate and the lower concrete prefabricated cover plate through waterproof mortar; enabling a back pulling rebar which is reserved on every concrete prefabricated cover plate to be fixedly connected with a vertical rebar which is arranged on the internal side of every vertical post pouring belt of the outer wall; plastering a connecting position between every concrete prefabricated cover plate and the outer wall to be in an oblique angle of 45 degrees and leveling through the waterproof mortar; backfilling underground structural earthwork; holding internal side templates of the vertical post pouring belts of the outer wall when the vertical post pouring belts of the outer wall achieve a pouring condition; pouring concrete on the post pouring belts from the top of the vertical post pouring belts. The construction method for the vertical post pouring belt plugging of the underground structural outer wall can effectively satisfy a standard requirement that the post pouring belts are constructed when age of the concrete on two sides of the post pouring belts achieves 60 days, can guarantee that a next procedure can be constructed without waiting for the post pouring belts finishing pouring and plays an important role in finishing ahead of the construction period.
Description
Technical field
The present invention relates to the job practices of underground structure ater-casting, specifically, relate to the job practices of the vertical ater-casting of exterior wall in a kind of construction of underground structure.
Background technology
At present, in industry and civilian construction were constructed, design of reinforced concrete structure, when solving ultra-long concrete temperature shrinkage crack and differential settlement of buildings, often adopted the method for Construction Later Casting Zone.Ater-casting is for preventing that monolithic reinforced concrete structure is due to temperature, the uneven issuable harmful cracks of contraction, according to design or job specfication requirement, in plate, wall, beam relevant position, stay and establish the temporary construction seam, structure temporarily is divided into to some parts, through component inside, shrink, after the some time, water again and smash this constuction joint concrete, structure is linked to be to integral body.The setting position of ater-casting, distance determine by designing and calculating, and its width is considered easy construction, avoided stress concentrated, is often 800～1200mm; At the position that waterproof requirement is arranged, ater-casting is set, should considers the waterstop structure; The position, ater-casting is set and also should considers the different Elements Of Expenses of measure content such as masterplate; The strength grade of concrete that fill at the position, ater-casting must improve one-level than original structure.
Construction Later Casting Zone occurs that to preventing structure deformation crack can play effect preferably, generally can be with solving the problems such as high-rise main building and low layer annex settlement difference, steel concrete shrinkage strain and minimizing thermal (temperature difference) stress.
In general, ater-casting is concrete, and to build the time better more late, but can not postpone indefinite duration.Therefore design specifications requires the ater-casting concrete to be built after agent structure completes 60 days again, and the integral construction duration has been subject to serious restriction like this.
The ater-casting width of underground structure is 800mm～1200mm, in top board, wall, the base plate formation perforation of underground structure.The underground structure of overlength, its ater-casting are arranged on stressed smaller part position, spacing 30～40m.For body of wall, designed the engineering of ater-casting, need to wait until after constructing in the underground structure ater-casting and carry out backfilling of earthwork again, this will have a strong impact on the construction period.
Summary of the invention
What the present invention will solve is the technical problem that the current underground structure ater-casting construction period is long, cost is high, the job practices of a kind of outer wall of underground structure vertical ater-casting shutoff is provided, without reaching, meet ater-casting and want to build again after seeking time, created strong condition for fulfiling construction task ahead of schedule.
In order to solve the problems of the technologies described above, the present invention is achieved by following technical scheme:
The job practices of a kind of outer wall of underground structure vertical ater-casting shutoff, this job practices is carried out in accordance with the following steps:
(1) in the outside, the vertical ater-casting of exterior wall, upwards discharge successively concrete prefabricated cover plate by sole plate, wherein the size of a uppermost described concrete prefabricated cover plate is as the criterion with in-site measurement; Every described concrete prefabricated cover plate both sides stretch out in respectively both sides, the vertical ater-casting of exterior wall; Shutoff is carried out by waterproofing mortar in gap between the prefabricated cover plate of upper and lower two block concrete;
(2) every described concrete prefabricated cover plate is reserved with to carry on the back and draws reinforcing bar, the described back of the body to draw the reinforcing bar end to be fixedly connected with the vertical reinforcement of inboard, the vertical ater-casting of described exterior wall;
(3) described concrete prefabricated cover plate and exterior wall junction are smeared to oblique angle at 45 ° by cement mortar;
(4) described concrete prefabricated lid surface and described 45 ° of oblique angle waterproofing mortar levellings; Described concrete prefabricated cover plate is smeared into fillet with the sole plate junction with waterproofing mortar;
(6) place, described 45 ° of oblique angles overlays additional waterproof course;
(7) underground structure backfilling of earthwork;
(8), after the vertical ater-casting of exterior wall reaches the condition of building, install the vertical ater-casting of exterior wall inner side template;
(9) from top, vertical ater-casting, build body of wall ater-casting concrete.
Every described concrete prefabricated cover plate both sides stretch out in the vertical ater-casting of exterior wall both sides 150～200mm.
The invention has the beneficial effects as follows:
The present invention is by the shutoff of the vertical ater-casting of External Wall, constructs after the Ying Zaiqi both sides, ater-casting that can effectively meet code requirement reach 60d the age of concrete again; The backfilling of earthwork that can guarantee again next procedure does not need by the time to have built ater-casting constructs again, has played important function to fulfiling the construction period ahead of schedule.
The accompanying drawing explanation
Fig. 1 is the construction schematic diagram of outer wall of underground structure provided by the present invention vertical ater-casting shutoff;
Fig. 2 is the construction schematic diagram that installs the vertical ater-casting of exterior wall inner side template.
In figure: 1: the vertical ater-casting of exterior wall; 2: concrete prefabricated cover plate; 3: the back of the body draws reinforcing bar; 4: vertical reinforcement;
5: inner side template; 6: bottom plate rear pouring tape.
The specific embodiment
The present invention is described in further detail as example below to take certain China Democratic National Construction Association's engineering basement construction, and following examples can make those skilled in the art more fully understand the present invention, but do not limit the present invention in any way.
As shown in Figure 1, certain China Democratic National Construction Association's engineering basement construction process be cushion construction → base plate steel bar binding → base plate template installation → underplate concrete build → wall reinforcing bar binding → wall form installs → builds the concrete prefabricated cover plate 2 of the concrete prefabricated cover plate 2 of wall concrete → making → install in 1 outside, the vertical ater-casting of exterior wall → do waterproof → backfill → reach vertical ater-casting 1 of condition after-pouring exterior wall.
(1) before cushion construction, the mortar in bottom plate rear pouring tape 6 inboards accumulates the groove place and draws elongated line in advance, and the ground that concrete grout is accumulated to the groove place digs dark 30mm, so that the absolute altitude that concrete grout accumulates the groove place while building blinding concrete reduces 30mm.
After completing above construction, carry out cushion construction.After bed course reaches the intensity that allows follow-up construction, eject the position line of mortar bar thereon, requiring the width of mortar bar is 100mm, height dimension is layout design size 50mm, length dimension equals the elongated of bottom plate rear pouring tape 6, the mortar bar should be along the elongated straight setting of ater-casting, concrete leaking outside when preventing from building.
(2) base plate steel bar binding
1. the reinforcing bar at bottom plate rear pouring tape 6 places does not disconnect;
2., after completing the baseplate reinforcing bar laying, at 6 liang of side positions of bottom plate rear pouring tape, place the steel plate for sealing water combining structure of having welded, and bottom master's muscle of downside steel fabric sheet in the steel plate for sealing water combining structure is placed on the mortar bar; The mortar bar plays stable supporting role, and the cement mortar of mortar strip adoption 1:2 is made; Then its two side areas successively according to the spacing of layout design by remaining reinforcing bar binding on described lower shoe.
(3) the base plate template is installed, and horizontal construction joint is kept somewhere at the above 200mm of base plate place.
(4) build underplate concrete.
(5) wall reinforcing bar binding.
Take the vertical ater-casting 1 of every two exterior walls is a construction section, and each construction section is colligation wall steel bar respectively; The every section vertical ater-casting of exterior wall 1 place's reinforcing bar can not disconnect;
(6) wall reinforcing bar formwork, carry out shutoff in 1 body of wall inboard, the vertical ater-casting of exterior wall with gauze wire cloth;
(7) wall concreting;
(8) wall form is removed;
(9) the vertical ater-casting of exterior wall 1 joint part picks cutter, and surperficial laitance is rejected, and is advisable to expose stone; And water is rinsed well;
(10) the concrete prefabricated cover plate 2 of prefabricated high 600mm, wide 1300mm, thick 120mm;
(11) in 1 outside, the vertical ater-casting of exterior wall (backfilling of earthwork one side), start upwards to discharge successively concrete prefabricated cover plate 2 by sole plate, wherein topmost the size of the prefabricated cover plate 2 of a block concrete is as the criterion with field measurement actual quantities size;
The prefabricated cover plate of every block concrete 2 both sides stretch out in respectively 1 both sides, the vertical ater-casting of exterior wall, and the length of stretching out is 150～200m;
Shutoff is carried out by waterproofing mortar in gap between the prefabricated cover plate 2 of upper and lower two adjacent concretes.
(12) concrete prefabricated cover plate 2 is reserved with the back of the body and draws reinforcing bar; The back of the body draws an end of reinforcing bar 3 to be preset in concrete prefabricated cover plate 2 inside, and the other end stretches out and be firm by the galvanized wire colligation with the vertical reinforcement 4 of 1 inboard, the vertical ater-casting of outer wall of basement.
(13) by the cement mortar of 1: 3, concrete prefabricated cover plate 2 is smeared to oblique angle at 45 ° with the outer wall of basement junction; Concrete prefabricated cover plate 2 surfaces and 45 ° of oblique angle waterproofing mortar levellings; Concrete prefabricated cover plate 2 is smeared into R with the sole plate junction with waterproofing mortar > fillet of 50mm.
(14) concrete prefabricated cover plate 2 overlays with 45 ° of oblique angles of outer wall of basement junction the SBS additional waterproof course that the wide 4mm of 500mm is thick.
(15) underground structure concrete exterior wall backfilling of earthwork.
(16) until the vertical ater-casting 1 of exterior wall reach designing requirement build condition after, install the vertical ater-casting of exterior wall 1 inner side template 5, as shown in Figure 2.
(17) from 1 top, the vertical ater-casting of exterior wall, build body of wall ater-casting concrete.
Adopt the vertical ater-casting of the outer wall of underground structure plugging construction method of the present embodiment to construct, this China Democratic National Construction Association is one and a half months the engineering basement construction duration, compared to conventional method, shifted to an earlier date the bimestrial construction period, this job practices has played important function to fulfiling the construction period ahead of schedule as seen.
Although the above is described the preferred embodiments of the present invention by reference to the accompanying drawings; but the present invention is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away from the scope situation that aim of the present invention and claim protect, can also make the concrete conversion of a lot of forms, within these all belong to protection scope of the present invention.
Claims (2)
1. the job practices of an outer wall of underground structure vertical ater-casting shutoff, is characterized in that, this job practices is carried out in accordance with the following steps:
(1) in the outside, the vertical ater-casting of exterior wall, upwards discharge successively concrete prefabricated cover plate by sole plate, wherein the size of a uppermost described concrete prefabricated cover plate is as the criterion with in-site measurement; Every described concrete prefabricated cover plate both sides stretch out in respectively both sides, the vertical ater-casting of exterior wall; Shutoff is carried out by waterproofing mortar in gap between the prefabricated cover plate of upper and lower two block concrete;
(2) every described concrete prefabricated cover plate is reserved with to carry on the back and draws reinforcing bar, the described back of the body to draw the reinforcing bar end to be fixedly connected with the vertical reinforcement of inboard, the vertical ater-casting of described exterior wall;
(3) described concrete prefabricated cover plate and exterior wall junction are smeared to oblique angle at 45 ° by cement mortar;
(4) described concrete prefabricated lid surface and described 45 ° of oblique angle waterproofing mortar levellings; Described concrete prefabricated cover plate is smeared into fillet with the sole plate junction with waterproofing mortar;
(6) place, described 45 ° of oblique angles overlays additional waterproof course;
(7) underground structure backfilling of earthwork;
(8), after the vertical ater-casting of exterior wall reaches the condition of building, install the vertical ater-casting of exterior wall inner side template;
(9) from top, vertical ater-casting, build body of wall ater-casting concrete.
2. the job practices of a kind of outer wall of underground structure vertical ater-casting shutoff according to claim 1, is characterized in that, every described concrete prefabricated cover plate both sides stretch out in the vertical ater-casting of exterior wall both sides 150～200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013103693229A CN103410173A (en) | 2013-08-21 | 2013-08-21 | Construction method for vertical post pouring belt plugging of underground structural outer wall |
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| CN2013103693229A CN103410173A (en) | 2013-08-21 | 2013-08-21 | Construction method for vertical post pouring belt plugging of underground structural outer wall |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615019A (en) * | 2013-12-16 | 2014-03-05 | 中建八局第四建设有限公司 | Method for plugging outer wall post-cast strip in advance |
| CN107288227A (en) * | 2017-06-21 | 2017-10-24 | 中国十七冶集团有限公司 | A kind of construction method of prefabricated superimposed sheet piece waterproof sealing |
| CN108396985A (en) * | 2018-03-29 | 2018-08-14 | 广州地铁设计研究院有限公司 | Holes blocking precast construction and holes blocking structure |
| CN109778916A (en) * | 2018-12-10 | 2019-05-21 | 五冶集团上海有限公司 | A kind of poured band of outer wall of basement Antiseep method based on water resistant plate |
| CN111441467A (en) * | 2020-04-10 | 2020-07-24 | 中国十七冶集团有限公司 | Basement outer wall post-cast strip pouring front-block anti-seepage component and construction method |
| CN113137062A (en) * | 2021-05-10 | 2021-07-20 | 山西四建集团有限公司 | High-rise residential expansion type reinforcing belt construction method for replacing post-cast strip |
| 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 |
| CN114457852A (en) * | 2022-01-17 | 2022-05-10 | 中国五冶集团有限公司 | Basement exterior wall post-cast strip U-shaped concrete precast slab plugging method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615019A (en) * | 2013-12-16 | 2014-03-05 | 中建八局第四建设有限公司 | Method for plugging outer wall post-cast strip in advance |
| CN103615019B (en) * | 2013-12-16 | 2016-04-27 | 中建八局第四建设有限公司 | The method for blocking in advance of post-pouring belt of outer wall |
| CN107288227A (en) * | 2017-06-21 | 2017-10-24 | 中国十七冶集团有限公司 | A kind of construction method of prefabricated superimposed sheet piece waterproof sealing |
| CN107288227B (en) * | 2017-06-21 | 2019-03-12 | 中国十七冶集团有限公司 | A kind of construction method of prefabricated superimposed sheet piece waterproof sealing |
| CN108396985A (en) * | 2018-03-29 | 2018-08-14 | 广州地铁设计研究院有限公司 | Holes blocking precast construction and holes blocking structure |
| CN108396985B (en) * | 2018-03-29 | 2023-11-24 | 广州地铁设计研究院股份有限公司 | Hole plugging structure |
| CN109778916A (en) * | 2018-12-10 | 2019-05-21 | 五冶集团上海有限公司 | A kind of poured band of outer wall of basement Antiseep method based on water resistant plate |
| CN111441467A (en) * | 2020-04-10 | 2020-07-24 | 中国十七冶集团有限公司 | Basement outer wall post-cast strip pouring front-block anti-seepage component and construction method |
| CN113137062A (en) * | 2021-05-10 | 2021-07-20 | 山西四建集团有限公司 | High-rise residential expansion type reinforcing belt construction method for replacing post-cast strip |
| 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 |
| CN114457852A (en) * | 2022-01-17 | 2022-05-10 | 中国五冶集团有限公司 | Basement exterior wall post-cast strip U-shaped concrete precast slab plugging method |
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Application publication date: 20131127 |