阅读说明：本技术 地下室外墙后浇带超前封闭预制卡槽免支模体系施工方法 (Construction method of basement outer wall post-cast strip advanced sealing prefabricated clamping groove formwork-free system ) 是由 陈小林 朱凯 于 2019-09-27 设计创作，主要内容包括：本发明涉及的一种地下室外墙后浇带超前封闭预制卡槽免支模体系施工方法,其特征在于：其施工步骤主要包括：(1)基础清理、(2)定位放线、(3)预制卡槽制作、(4)预制卡槽吊运、(5)底部预制卡槽安装、固定、(6)钢筋及钢筋网片施工、(7)上部预制卡槽及钢筋施工、(8)地下室外墙施工、(9)找平层及转角处抹灰砂浆施工、(10)防水层施工、(11)防水保护层施工、(12)地下室外回填土施工。本发明通过预制卡槽超前封闭避免了杂物、雨水等进入地下室,解决了室外回填难题。(The invention relates to a construction method of a basement outer wall post-cast strip advanced sealing prefabricated clamping groove formwork-free system, which is characterized by comprising the following steps of: the construction steps mainly comprise: (1) cleaning a foundation, (2) positioning and paying off, (3) manufacturing a prefabricated clamping groove, (4) hoisting the prefabricated clamping groove, (5) installing and fixing the prefabricated clamping groove at the bottom, (6) constructing a steel bar and a steel bar net sheet, (7) constructing the prefabricated clamping groove and the steel bar at the upper part, (8) constructing an outer wall of a basement, (9) constructing mortar at a leveling layer and a corner, (10) constructing a waterproof layer, (11) constructing a waterproof protective layer, and (12) constructing backfill soil outside the basement. The invention prevents sundries, rainwater and the like from entering the basement by the advanced sealing of the prefabricated clamping groove, and solves the problem of outdoor backfilling.)

1. The construction method of the basement outer wall post-cast strip advanced sealing prefabricated clamping groove formwork-supporting-free system is characterized by comprising the following steps of:

step one, basic cleaning: using a disc sander and a shovel blade to wipe and beat the periphery of the post-cast strip (6) of the basement outer wall (5) until the periphery is smooth, and using clean water with pressure to wash the periphery;

step two, positioning and paying off: according to the size of the prefabricated clamping groove (1) and the offset condition of the post-cast strip (6), marks are made on two sides of the post-cast strip (6) of the basement outer wall (5), and installation and positioning are carried out according to the marks when the prefabricated clamping groove (1) is installed;

step three, manufacturing a prefabricated clamping groove (1): the method comprises the steps that a mould is manufactured according to the size of a prefabricated clamping groove (1), the size is controlled when a mould template is configured, the mould is reinforced, the joint of the internal and external corner templates is tight to prevent slurry leakage, in order to facilitate demoulding, a demoulding agent is brushed on a concrete contact surface at the inner side of the mould, a reinforcing mesh is placed in a member firstly, and two embedded rings (105) are arranged to facilitate later-stage lifting and fixing;

step four, prefabricating the clamping groove (1) for hoisting: before the prefabricated clamping grooves (1) are installed, hoisting equipment is firstly placed in place according to the construction environment and the structural arrangement of the site; in place, trial operation is firstly carried out, and the requirement that the hoisting equipment has enough rotating operation space while the prefabricated clamping groove (1) is vertically hoisted on the outer wall (5) of the basement is met; an operator lifts the prefabricated clamping groove (1) to the top plate of the outer wall post-cast strip (6) and places the prefabricated clamping groove on the rotating radius of a hoisting device suspension arm, the prefabricated clamping groove (1) is hung on a pre-buried ring (105) of the prefabricated clamping groove (1) through a hanging hook, a winch is started slowly, the prefabricated clamping groove (1) is lifted off the ground, and the suspension arm is rotated until the prefabricated clamping groove is located above the post-cast strip (6); slowly dropping the prefabricated clamping groove (1) downwards, and matching by an operator until the prefabricated clamping groove is placed in place;

step five, installing and fixing the bottom prefabricated clamping groove: the 1 st prefabricated clamping groove (1) is installed by adopting M7.5 cement mortar for contraposition mortar setting according to marks or elastic ink lines which are made on two sides of a post-cast strip (6) of the basement outer wall (5), and is placed at the bottom of the basic post-cast strip (6);

step six, construction of the steel bars and the steel bar meshes: the horizontal ribs (7) penetrate through the reinforcement cage preformed holes (101) and are combined with the vertical ribs (8) to form a reinforcement cage of the basement outer wall (5), the reinforcement mesh (11) is arranged in the reinforcement cage preformed holes (101) in a manner of being matched with the horizontal ribs (7), and one half of the water stop steel plate (10) is arranged in the post-pouring zone (6) and the other half of the water stop steel plate is arranged in the range of the basement outer wall (5);

seventhly, prefabricating the clamping groove (1) at the upper part and constructing the steel bars: a second prefabricated clamping groove (1) is arranged along the post-pouring belt of the basement outer wall from bottom to top, so that the outer layer (103) and the inner layer (104) of the clamping groove are mutually overlapped, the horizontal rib (7) and the vertical rib (8) of the basement outer wall (5) at the previous layer are constructed and bound, and the reinforcing mesh (11) and the water stop steel plate (10) are installed; when the vertical installation is carried out, the vertical verticality of the prefabricated clamping groove (1) is controlled by a suspension wire, and if the deviation and instability occur, adjustment or padding is needed, so that the whole vertical prefabricated clamping groove is ensured to be stable and straight after being installed;

step eight, constructing the basement outer wall (5): inserting a template (12) into a template groove (102), placing an anti-seepage belt (13) in the template groove (102) in advance, adhering buffer pads (14) on two sides of the prefabricated clamping groove (1), and pouring a basement outer wall (5) between the templates (12);

ninth, construction of plastering mortar on the leveling layer and the corners: after the concrete strength of the basement outer wall (5) reaches a certain strength, removing the templates (12) at two sides, removing the anti-seepage belt (13) in the groove (102) of the indoor side template, paving glass fiber gridding cloth at the joint of the prefabricated clamping groove (1) and the basement outer wall (5), paving a leveling layer (2) with the thickness of 20mm on each side by using 1:3 cement mortar, plastering mortar (9) at the construction corner by the groove (102) of the outdoor side template, and plastering the joint of the prefabricated clamping groove (1) and the basement outer wall (5) to form a 45-degree oblique angle;

step ten, constructing a waterproof layer (3): uniformly smearing cold primer oil on the leveling layer (2), paving two layers of SBS modified asphalt flexible asphalt felts, and adding a waterproof layer (3) at the internal corner of the prefabricated clamping groove (1), wherein the width of each side of the waterproof layer (3) is not less than 500 mm;

eleventh, constructing a waterproof protective layer (4): c20 fine aggregate concrete is adopted on the waterproof layer (3) as a waterproof protective layer (4) and is tightly attached to the outer side surface of the prefabricated clamping groove (1) for construction, so that each part is covered in place;

twelfth, underground outdoor backfill (15) construction: before backfilling, the basement waterproof layer (3), the protective layer (4) and the like are checked and accepted, the backfill soil (15) construction is carried out by layered filling and layered compaction, and the layered filling thickness is not more than 300 mm.

Technical Field

The invention belongs to the technical field of basement post-cast strip construction, and particularly relates to a construction method of a basement outer wall post-cast strip advanced sealing prefabricated clamping groove formwork-free system, which is suitable for construction of basement outer wall post-cast strips in various building projects, and is particularly suitable for construction of basement outer wall post-cast strips with narrow places, complex surrounding environments and tight construction period requirements.

Background

The post-cast strip of high-rise building is usually constructed after the main structure of the building is constructed. The potential safety hazard is not only existed before the basement outer wall post-cast strip is sealed, but also sundries, rainwater and construction water easily enter the basement before the post-cast strip is sealed, and the masonry quality and normal construction of the post-cast strip are affected. The concrete pouring time interval of the basement outer wall post-cast strip is longer, so that the working procedures such as outdoor backfilling cannot be carried out, particularly, the construction site in the urban area is narrow, and a site cannot be provided for main structure, masonry decoration and equipment installation, and the problem is particularly prominent. Therefore, the basement outer wall post-cast strip is a key part for construction progress management, and how to scientifically, reasonably and quickly seal the basement outer wall post-cast strip is a major technical problem which must be overcome for construction progress management.

Disclosure of Invention

The invention aims to provide a construction method of a prefabricated clamping groove formwork-free system for the advanced sealing of a post-cast strip of an outer wall of a basement, aiming at the phenomena that the traditional post-cast strip seals front sundries, rainwater and construction water easily enter the basement and the working procedures such as outdoor backfilling are difficult to carry out, and the problem of the advanced sealing construction of the post-cast strip is well solved.

In order to achieve the technical purpose, the construction method of the basement outer wall post-cast strip advanced sealing prefabricated clamping groove formwork-free system comprises the following steps:

step one, basic cleaning: and (3) using a disc grinding machine and a shovel blade to carry out scraping and beating on the periphery of the post-cast strip of the outer wall of the basement until the post-cast strip is flat, and using clean water with pressure to wash the post-cast strip clean.

Step two, positioning and paying off: according to the size of the prefabricated clamping groove and the offset condition of the post-cast strip, marks are made on two sides of the post-cast strip of the outer wall of the basement, and installation and positioning are needed according to the marks when the prefabricated clamping groove is installed.

Step three, manufacturing a prefabricated clamping groove: the method comprises the steps of manufacturing a mould according to the size of a prefabricated clamping groove, controlling the size when a mould template is configured, reinforcing the mould, closely preventing grout leakage of joints of the male and female corner templates, brushing a release agent on a concrete contact surface on the inner side of the mould for convenience of demoulding, placing a reinforcing mesh in a member, and arranging two embedded rings for convenience of later hoisting and fixing.

Step four, prefabricating a clamping groove for hoisting: and before the prefabricated clamping grooves are installed, hoisting equipment is firstly placed in place according to the construction environment and the structural arrangement of the site. Trial operation should be carried out after taking one's place, when satisfying the prefabricated draw-in groove of vertical handling of basement outer wall, also need satisfy hoisting equipment and have sufficient rotatory operating space. An operator lifts the prefabricated clamping groove to the top plate of the outer wall post-cast strip and places the prefabricated clamping groove on the rotating radius of a hoisting device cantilever arm, the prefabricated clamping groove pre-embedded ring is hung on the prefabricated clamping groove pre-embedded ring through a hanging hook, a winch is slowly started, the prefabricated clamping groove is lifted off the ground, and the cantilever arm is rotated until the prefabricated clamping groove is located above the post-cast strip. The prefabricated clamping groove is slowly placed downwards, and is matched by an operator until the prefabricated clamping groove is placed in place.

Step five, installing and fixing the bottom prefabricated clamping groove: and (3) arranging the 1 st prefabricated clamping groove at the bottom of the foundation post-cast strip by adopting M7.5 cement mortar for contraposition mortar setting according to marks or elastic ink lines on two sides of the basement outer wall post-cast strip.

Step six, construction of the steel bars and the steel bar meshes: the horizontal rib passes reinforcement cage preformed hole and combines perpendicular muscle to constitute basement outer wall reinforcement cage, and the reinforcing bar net piece cooperation horizontal rib sets up in reinforcement cage preformed hole, and stagnant water steel sheet, half set up in the post-cast strip, half in basement outer wall within range.

Seventhly, constructing an upper prefabricated clamping groove and reinforcing steel bars: and placing a second prefabricated clamping groove along the post-pouring belt of the basement outer wall from bottom to top, overlapping the outer layer of the clamping groove and the inner layer of the clamping groove mutually, and performing construction binding on the horizontal rib and the vertical rib of the basement outer wall of the previous layer, and installing the reinforcing mesh and the water stop steel plate. During vertical installation, the vertical perpendicularity of the prefabricated clamping groove is controlled by a suspension wire, and the whole vertical prefabricated clamping groove is ensured to be stably and smoothly straight after installation by adjusting or plugging the cushion when the deviation and instability phenomena occur.

Step eight, basement exterior wall construction: the template is inserted into the template groove, the anti-seepage belt is placed in the template groove in advance, the cushion pads are adhered to two sides of the prefabricated clamping groove, and the basement outer wall is poured between the templates.

Ninth, construction of plastering mortar on the leveling layer and the corners: after the concrete strength of the outer wall of the basement reaches a certain strength, the templates on the two sides are dismantled, the anti-seepage belt is dismantled in the groove close to the inner side template, glass fiber mesh cloth is laid at the joint of the prefabricated clamping groove and the outer wall of the basement, the lap width of each side is not less than 100mm, a leveling layer with the thickness of 20mm is laid by cement mortar in a ratio of 1:3, mortar is plastered at the construction corner close to the groove of the outer side template, and the joint of the prefabricated clamping groove and the outer wall of the basement is plastered into an.

Step ten, waterproof layer construction: evenly paint cold bottom oil on the screed-coat and lay two-layer SBS modified asphalt flexible asphalt felt, should increase the waterproof layer in prefabricated draw-in groove reentrant corner department, and the waterproof layer width is no less than 500mm on each side.

Eleventh, constructing a waterproof protective layer: c20 fine aggregate concrete is adopted as a waterproof protective layer on the waterproof layer and clings to the outer side surface of the prefabricated clamping groove for construction, and each part is guaranteed to be covered in place.

Twelfth, underground outdoor backfill construction: before backfilling, the basement waterproof layer, the protective layer and the like are checked and accepted, backfilling construction is carried out by layered paving and layered compaction, and the layered paving and filling thickness is not more than 300 mm.

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

(1) the invention adopts the prefabricated clamping groove to seal the post-cast strip in advance, replaces the prior common brick retaining wall to be used as the isolation of the backfill soil and the post-cast strip, and effectively resists the lateral pressure of the backfill soil; the basement outer wall post-pouring belt is sealed in advance, rainwater, construction water and sundries can be prevented from being immersed, expansion of indoor engineering of the basement and drying and tidying of the field are facilitated, meanwhile, the basement can be organized in time to be backfilled, a construction working face is provided for follow-up construction, construction safety risks are reduced, and the requirement of green construction management is met.

(2) The invention utilizes the prefabricated clamping groove to form the template outside the post-cast strip of the basement outer wall, replaces secondary formwork support, reduces the material and labor cost of the secondary formwork support at the outer side, is simple to operate during construction, and shortens the construction period.

(3) The inner layer structure and the outer layer structure of the prefabricated clamping groove are arranged in a staggered mode, and when two clamping grooves which are adjacent up and down on the convex portion and the concave portion are overlapped, the splicing is tighter.

(4) According to the invention, the prefabricated clamping grooves are vertically overlapped to complete post-cast strip advanced formwork support, and the waterproof layer and the waterproof protective layer are arranged outside the prefabricated clamping grooves, so that the later waterproof effect is good.

(5) According to the invention, the buffer cushion is arranged between the prefabricated clamping groove and the outer wall of the basement, so that the concrete lateral pressure of the outer wall of the basement is changed from passive to active, and the lateral pressure brought to the prefabricated clamping groove when the outer wall of the basement is poured is reduced.

Drawings

FIG. 1 is a schematic view of a basement exterior wall post-cast strip advanced sealing prefabricated clamping groove formwork-free system;

FIG. 2 is a schematic diagram of a prefabricated card slot structure;

FIG. 3 is a schematic top view of the prefabricated card slot of FIG. 2;

FIG. 4 is a schematic cross-sectional view of the prefabricated card slot of FIG. 2 along the A-A section of the basement exterior wall;

FIG. 5 is a schematic cross-sectional view of the prefabricated card slot of FIG. 2 taken along the section B-B of the basement exterior wall;

FIG. 6 is a schematic view of a structure for mounting and fixing the prefabricated clamping groove at the bottom in the fifth step;

FIG. 7 is a schematic view of the construction of the steel bars and the steel mesh in step six;

FIG. 8 is a schematic view of the construction of the outer wall of the basement in step eight;

FIG. 9 is a schematic view of plastering mortar at corners;

fig. 10 is a schematic view of the prefabricated clamping groove leveling, waterproof and protective layer.

In the figure: 1. prefabricating a clamping groove; 101. reserving holes in the reinforcement cage; 102. a template groove; 103. an outer layer structure; 104. an inner layer structure; 105. pre-embedding a ring; 2. leveling layer; 3. a waterproof layer; 4. a waterproof protective layer; 5. a basement exterior wall; 6. post-pouring a belt; 7. horizontal ribs; 8. vertical ribs; 9. plastering mortar at corners; 10. a water stop steel plate; 11. reinforcing mesh sheets; 12. a template; 13. an impermeable belt; 14. buffer cushion, 15. backfill soil.

Detailed Description

For further understanding of the contents of the present invention, the present invention will be described in detail with reference to examples, which are provided for the purpose of explanation and are not intended to limit the present invention.

The inner side in this embodiment refers to the side of the basement outer wall near the interior of the basement, and the outer side refers to the side of the basement outer wall near the exterior of the basement.

The invention relates to a basement outer wall post-cast strip advanced sealing prefabricated clamping groove formwork-supporting-free system which is shown by combining the attached drawing 1, and comprises a basement outer wall 5 and a post-cast strip 6, wherein a water stop steel plate 10 perpendicular to an interface is arranged between the basement outer wall 5 and the post-cast strip 6, and a plurality of prefabricated clamping grooves 1 which are overlapped up and down are arranged at the post-cast strip 6. Basement outer wall 5 inside be equipped with horizontal muscle 7 and vertical muscle 8, wherein horizontal muscle 7 runs through the steel reinforcement cage preformed hole 101 of 1 both sides of prefabricated draw-in groove, 8 interval arrangements of vertical muscle are between horizontal muscle 7. Reinforcing mesh sheets 11 are laid in the preformed holes 101 of the reinforcing cage, anti-seepage belts 13 are arranged in the formwork grooves 102 on the outer sides and are filled with corner plastering mortar 9, cushion pads 14 are arranged between the prefabricated clamping grooves 1 and the basement outer wall 5, the concrete side pressure of the basement outer wall 5 is changed from passive to active, and the side pressure brought to the prefabricated clamping grooves when the basement outer wall is poured is reduced. The prefabricated clamping groove 1 and the outer side surface of the basement outer wall 5 are sequentially provided with the leveling layer 2, the waterproof layer 3 and the waterproof protective layer 4, and backfilling 15 construction is carried out outside after construction is completed.

Shown in fig. 2 ~ 5, prefabricated draw-in groove 1 include inner layer structure 104 and outer structure 103, inner circle of inner layer structure 104 be circular arc structure, inner layer structure 104 and outer structure 103 stagger from top to bottom, prefabricated draw-in groove 1 surface is equipped with two pre-buried rings 105, form the concave part at the top of prefabricated draw-in groove 1, form the bulge in the bottom of prefabricated draw-in groove 1, upper and lower adjacent prefabricated draw-in groove 1 passes through bulge and concave part joint, prefabricated draw-in groove 1's both sides steel reinforcement cage preformed hole 101, steel reinforcement cage preformed hole 101 length slightly is greater than the interval of the horizontal muscle 7 of basement outer wall 5 that relates to, the both sides of prefabricated draw-in groove 1 are equipped with two respectively and are used for pouring the formwork groove 102 that basement outer wall supported and establish the template usefulness, formwork groove 102 sets up in the inside and outside both sides of steel.

Referring to the attached drawing 6, the prefabricated clamping groove 1 is installed by adopting M7.5 cement mortar for contraposition mortar setting according to marks or elastic ink lines on two sides of the basement outer wall 5 post-cast strip 6 and is placed at the bottom of the foundation post-cast strip 6.

Combine figure 7 to show, horizontal muscle 7 passes steel reinforcement cage preformed hole 101 and combines vertical muscle 8 to constitute 5 steel reinforcement cages of basement outer wall, and steel reinforcement net piece 11 cooperates horizontal muscle 7 to set up in steel reinforcement cage preformed hole 101, and stagnant water steel sheet 10, half set up in post-cast strip 6, half in 5 within ranges of basement outer wall.

Referring to fig. 8, the formwork 12 is inserted into the formwork groove 102, the impermeable belt 13 is placed in the formwork groove 102 in advance, the cushion pads 14 are adhered to two sides of the prefabricated clamping groove 1, and the basement exterior wall 5 is poured between the formworks 12.

Referring to fig. 9, after the concrete strength of the basement outer wall 5 reaches a certain strength, the formworks 12 on the two sides are removed, the impermeable belts 13 are removed from the grooves 102 of the indoor formworks, the mortar 9 is plastered at the construction corners from the grooves 102 of the outdoor formworks, and the joints of the prefabricated clamping grooves 1 and the basement outer wall 5 are plastered to form 45-degree oblique angles.

Referring to the attached drawing 10, glass fiber mesh cloth is laid at the joint of a prefabricated clamping groove 1 and a basement outer wall 5, the lap joint width of each side is not less than 100mm, a leveling layer 2 with the thickness of 20mm is laid by 1:3 cement mortar, two layers of SBS modified asphalt flexible asphalt felts are laid after cold primer oil is uniformly smeared on the leveling layer 2, a waterproof layer 3 is added at the internal corner of the prefabricated clamping groove 1, and the width of each side of the waterproof layer 3 is not less than 500 mm. C20 fine aggregate concrete is adopted on the waterproof layer 3 as a waterproof protective layer 4, construction is carried out by clinging to the outer side surface of the prefabricated clamping groove 1, and each part is guaranteed to be covered in place.

The invention relates to a construction method of a basement outer wall post-cast strip advanced sealing prefabricated clamping groove formwork-free system, which comprises the following steps of:

step one, basic cleaning: and (3) using a disc grinding machine and a shovel blade to carry out scraping and beating on the periphery of the post-cast strip 6 of the basement outer wall 5 until the periphery is smooth, and using clean water with pressure to wash the basement outer wall.

Step two, positioning and paying off: according to the size of the prefabricated clamping groove 1 and the deviation condition of the post-cast strip 6, marks are made on two sides of the post-cast strip 6 of the basement outer wall 5, and installation and positioning need to be carried out according to the marks when the prefabricated clamping groove 1 is installed.

Step three, manufacturing a prefabricated clamping groove 1: the method comprises the steps of manufacturing a mould according to the size of a prefabricated clamping groove 1, controlling the size when a mould template is configured, reinforcing the mould, tightly preventing grout leakage of joints of the male and female corner templates, brushing a release agent on a concrete contact surface on the inner side of the mould, placing a reinforcing mesh in a member, and arranging two embedded rings 105 to facilitate later-stage lifting and fixing.

Step four, prefabricating the clamping groove 1 for hoisting: the prefabricated clamping groove 1 is firstly used for hoisting equipment in place according to the construction environment and the structural arrangement on site before installation. Should try earlier to operate after taking one's place, satisfy 5 vertical handling prefabricated draw-in grooves 1 of basement outer wall simultaneously, also satisfy hoisting equipment and have sufficient rotatory operating space. An operator lifts the prefabricated clamping groove 1 to the top plate of the outer wall post-cast strip 6 and places the prefabricated clamping groove 1 on the rotating radius of a hoisting device suspension arm, the prefabricated clamping groove 1 is hung on the pre-embedded ring 105 of the prefabricated clamping groove 1 through a hanging hook, a winch is started slowly, the prefabricated clamping groove 1 is lifted off the ground, and the suspension arm is rotated until the prefabricated clamping groove is located above the post-cast strip 6. The prefabricated clamping groove 1 is slowly placed downwards, and is matched by an operator until the prefabricated clamping groove is placed in place.

Step five, installing and fixing the bottom prefabricated clamping groove: the 1 st prefabricated clamping groove 1 is installed by adopting M7.5 cement mortar for contraposition mortar setting according to marks or elastic ink lines on two sides of the basement outer wall 5 post-cast strip 6 and is arranged at the bottom of the foundation post-cast strip 6.

Step six, construction of the steel bars and the steel bar meshes: horizontal muscle 7 passes steel reinforcement cage preformed hole 101 and combines vertical muscle 8 to constitute 5 steel reinforcement cages of basement outer wall, and the setting of steel reinforcement net piece 11 cooperation horizontal muscle 7 is in steel reinforcement cage preformed hole 101, and 10, half settings of stagnant water steel sheet are in post-cast strip 6, half in 5 within ranges of basement outer wall.

Seventhly, prefabricating the clamping groove 1 at the upper part and constructing the steel bars: from up down, lay second piece prefabricated draw-in groove 1 in the same direction as basement outer wall post-cast strip, make draw-in groove skin 103 and inlayer 104 coincide each other to horizontal muscle 7 and the construction ligature of perpendicular muscle 8 of last layer basement outer wall 5, and reinforcing bar net piece 11 and stagnant water steel sheet 10 installation. During vertical installation, the vertical verticality of the prefabricated clamping groove 1 is controlled by a suspension wire, and the whole vertical prefabricated clamping groove is ensured to be stable and straight after installation by adjusting or plugging if the prefabricated clamping groove is deviated or unstable.

Step eight, constructing the basement exterior wall 5: the formwork 12 is inserted into the formwork groove 102, the impermeable belt 13 is placed in the formwork groove 102 in advance, the buffer pads 14 are adhered to two sides of the prefabricated clamping groove 1, and the basement outer wall 5 is poured between the formworks 12.

Ninth, construction of plastering mortar on the leveling layer and the corners: after the concrete strength of the basement outer wall 5 reaches a certain strength, the formworks 12 on the two sides are dismantled, the impermeable belt 13 is dismantled in the groove 102 of the indoor side formwork, glass fiber gridding cloth is paved at the joint of the prefabricated clamping groove 1 and the basement outer wall 5, the lap joint width of each side is not less than 100mm, the leveling layer 2 with the thickness of 20mm is paved by cement mortar in a ratio of 1:3, mortar 9 is plastered at the construction corner in the groove 102 of the outdoor side formwork, and an oblique angle of 45 degrees is plastered at the joint of the prefabricated clamping groove 1 and the basement outer wall 5.

Step ten, constructing a waterproof layer 3: evenly paint cold bottom oil on screed-coat 2 and lay two-layer SBS modified asphalt flexible asphalt felt after, at prefabricated draw-in groove 1 internal corner department, should increase waterproof layer 3, and 500mm are no less than on 3 width each sides of waterproof layer.

Eleven, constructing a waterproof protective layer 4: c20 fine aggregate concrete is adopted on the waterproof layer 3 as a waterproof protective layer 4, construction is carried out by clinging to the outer side surface of the prefabricated clamping groove 1, and each part is guaranteed to be covered in place.

Twelfth, underground outdoor backfill 15 construction: before backfilling, the basement waterproof layer 3, the protective layer 4 and the like are checked and accepted, the backfill 15 construction is carried out by layered paving and compaction, and the layered paving and filling thickness is not more than 300 mm.

The present invention has been described in detail with reference to the embodiments, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.