CN217150703U

CN217150703U - Basement bottom plate post-cast strip waterproof construction

Info

Publication number: CN217150703U
Application number: CN202220387852.0U
Authority: CN
Inventors: 谢华伟; 李建中; 屈鹏程
Original assignee: Taixing First Construction Group Co ltd
Current assignee: Taixing First Construction Group Co ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-08-09
Anticipated expiration: 2032-02-25

Abstract

The utility model relates to a construction field provides basement bottom plate post-cast strip waterproof construction. A sedimentation groove is arranged between the bottom plates at the two sides and is positioned below the bottom surfaces of the bottoms at the two sides; the opposite surfaces of the bottom plates on the two sides are step surfaces, water stop belts are vertically embedded in each step surface respectively, and the water stop belts extend along the length direction of the post-pouring belt; half of the water stop is positioned in the bottom plate and the other half is positioned in the post-pouring belt in the vertical direction; the two sides of the length direction of the settlement ditch are slopes inclining inwards, the bottom of the settlement ditch is a concrete cushion layer, the slope of the settlement ditch is a brick laying surface, and the inner wall of the settlement ditch is provided with a waterproof layer. Each process in the work progress is fully considered to this technical scheme, and the antiseep measure is comprehensive, has reduced the extra process in the work progress, improves the efficiency of construction.

Description

Basement bottom plate post-cast strip waterproof construction

Technical Field

The utility model relates to a construction field, concretely relates to basement bottom plate post-cast strip waterproof construction.

Background

The post-cast strip is an indispensable constructional measure when the structure is designed, especially between overlength structure, the main building that attaches, the effectual settlement of structure and the flexible scheduling problem that warp that has solved of setting up of post-cast strip, nevertheless there is the seepage hidden danger in the seam between post-cast strip and the both sides bottom plate, especially along with the extension of the service life of building, the seepage phenomenon can appear in post-cast strip position often, and for a long time, basement foundation bottom plate post-cast strip seepage problem has puzzled the construction side always.

The traditional foundation slab post-pouring belt adopts a water-swelling water stop strip 1 (shown in figure 1) or a water stop steel plate 2 horizontally placed in the middle of the foundation slab (shown in figure 2). Because of the intensive and the stagnant water board of soleplate sill bar sets up in the construction of traditional post-cast strip, is blockked when the later stage chisel is makeed, and the piece of production is difficult to be cleared up, needs to cut the reinforcing bar construction, influences the construction progress.

Disclosure of Invention

In order to overcome the water-proof effects of current post-cast strip not enough, defects such as the work progress is complicated, the utility model aims to provide a waterproof construction of basement bottom plate post-cast strip that the square seepage is effectual, the construction of being convenient for.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

the basement bottom plate post-cast strip waterproof structure comprises bottom plates on two sides of a post-cast strip, water stop strips embedded at the bottom plates on the two sides and a concrete post-cast strip between the bottom plates on the two sides, wherein the water stop strips are positioned at the contact parts of the post-cast strip and the bottoms on the two sides; the opposite surfaces of the bottom plates on the two sides are step surfaces, water stop belts are vertically embedded in each step surface respectively, and the water stop belts extend along the length direction of the post-pouring belt; half of the water stop is positioned in the bottom plate and the other half is positioned in the post-pouring belt in the vertical direction; the two sides of the length direction of the settlement ditch are slope surfaces which incline inwards, the bottom of the settlement ditch is a concrete cushion layer, the slope surface of the settlement ditch is a brick laying surface, the inner wall of the settlement ditch is provided with a waterproof layer, and the waterproof layer extends to the bottoms of the bottom plates on the two sides.

Furthermore, the connecting surface of the bottom plate and the post-cast strip is a roughened surface.

Furthermore, the waterproof layer has a waterproof roll material layer, and a waterproof layer protective layer is poured on the top of the waterproof layer, and a steel bar net layer is arranged in the waterproof layer protective layer.

Furthermore, the upper end and the lower end of the water stop belt are bent towards one side of the post-pouring belt.

Furthermore, the water stop belt is a water stop steel plate.

And furthermore, a step surface is arranged at the middle upper part of the sedimentation ditch and is positioned below the bottom elevation of the bottom plate, and one sides of the bottom plates at two sides, which are close to the post-cast strip, are poured to the step surface.

After taking above technical scheme, the beneficial effects of the utility model are that:

1. the step-type joint surface is adopted between the bottom plate and the post-pouring belt, the scabbling of the joint surface is matched, the joint area of the joint surface is increased, the joint strength is improved, the length of a gap for water leakage is directly increased, and the risk of leakage is reduced.

2. Through setting up vertical sealing rod in step joint department, the both ends of sealing rod are bent, have effectively increased the route of seepage, reduce the possibility of seepage.

3. Through setting up the subside ditch, be convenient for collect the incomplete bits of concrete after the step face chisel hair of bottom plate, do benefit to the clearance of incomplete bits, need not to cut bottom reinforcing bar, reduce the degree of difficulty of construction.

4. The design through the step face makes the sealing rod can vertical setting, can not produce at the in-process of chisel hair and shelter from, is convenient for chisel hair construction.

5. But the bottom of subside ditch with the bottom plate integral type is waterproof construction to strengthen with the reinforcing bar net, avoid the waterproof layer pressurized to break, reduce the seepage risk.

Each process in the work progress is fully considered to this technical scheme, and the antiseep measure is comprehensive, has reduced the extra process in the work progress, improves the efficiency of construction.

Drawings

FIG. 1 is a schematic structural view of an expansion water stop strip;

FIG. 2 is a schematic structural view of a horizontal water stop steel plate;

fig. 3 is a schematic structural diagram of the present technical solution.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings:

as shown in figure 3, the basement bottom plate post-cast strip waterproof structure is positioned between the joints of the two bottom plates of the basement. The water-stop strip comprises a post-pouring strip 3, bottom plates 4 on two sides of the post-pouring strip 3, water-stop strips 5 pre-buried at the bottom plates 4 on two sides, and settling ditches 6 positioned at the bottoms of the joints of the bottom plates 4 on two sides.

The opposite surfaces of the two bottom plates 4 are convex step surfaces 7, and the step surfaces 7 are roughened, so that the two bottom plates can be tightly combined with the post-cast strip 3 when the post-cast strip is poured. The waterstop 5 is steel waterstop, and the waterstop 5 extends along the length direction of seam, and on the vertical pre-buried step face 7's of two bottom plates horizontal plane of waterstop 5, the both ends of waterstop 5 are bent towards the direction of seam respectively, and the water that upwards leaks blocks. The water stop 5 is positioned in the bottom plate 4 in half and in the post-pouring belt 3 in half in the vertical direction.

The settling ditches 6 are positioned right below the joints of the bottom plates 4 at the two sides and are lower than the bottom surface elevation 8 of the bottom plates 4. The settling channel 6 is used for collecting coagulation debris generated in the roughening process on the side surface of the bottom plate 4, and is convenient for subsequent cleaning work. The bottom of the sedimentation ditch 6 is a concrete layer 9, two side walls of the sedimentation ditch 6 along the length direction are slopes inclining towards the inner side of the sedimentation ditch, namely the width of the sedimentation ditch 6 is shortened from top to bottom, the slope of the sedimentation ditch 6 is a brick laying surface 10, and waterproof coiled materials are laid in the sedimentation ditch 6 for waterproof treatment to form a waterproof layer 11. A concrete waterproof protective layer 12 is poured on the waterproof layer 11, and a reinforcing mesh is arranged in the waterproof protective layer 12 to prevent the waterproof layer 11 from being damaged after a post-pouring belt is poured. The waterproof layer 11 of the settling channel 6 and the waterproof layer of the bottom plate 4 are integrally constructed. And a horizontal step surface 13 lower than the bottom elevation 8 of the bottom plate is arranged at the top ditch of the settling channel 6, and the bottom plate 4 is poured downwards to the horizontal step surface 13.

The post-cast strip 3 is poured in a space formed by the bottom plates on the two sides and the sedimentation ditch 6, and the construction steps are as follows:

1. post-cast strip 3 settlement ditch earth excavation

And calculating the earth excavation elevation according to the construction level method thickness of the drawing before the earth excavation of the post-cast strip and the depth of the settlement ditch, wherein the excavation can be carried out by adopting a small excavator matched with manual work, and the excavation size and the elevation are well controlled.

2. Bedding pouring and brick bed film masonry whitewash

After the earthwork excavation is finished, the cushion concrete 9 at the bottom of the settlement ditch needs to be poured in time after rechecking the section size and the elevation to meet the requirements, and the surface layer of the cushion concrete 9 is calendered, so that a certain effect on waterproof performance can be achieved.

3. Waterproof construction of bottom plate

And (3) paving a waterproof layer 11 according to the waterproof design requirement of the foundation slab, integrally paving the foundation slab, and additionally arranging a waterproof additional layer at the position of the settlement ditch.

4. Construction of waterproof protective layer

After the waterproof layer construction is finished, the waterproof protective layer 12 is poured, in order to avoid the waterproof layer from being damaged due to cracking of the waterproof protective layer 12, an anti-cracking reinforcing mesh is added in the waterproof protective layer, and the possibility of cracking of the waterproof protective layer can be effectively reduced.

5. Binding of steel bars at bottom of foundation slab

And binding the bottom steel bars of the foundation slab according to the design requirements of the drawing and the requirements of the current standard drawing set, wherein the bottom steel bars of the foundation slab are fully bound.

6. Fixing and welding of water stop 5

According to the thickness of the foundation slab, the short steel bar heads are adopted in the middle of the slab to assist in welding the water stop steel plate, the water stop steel plate is vertically arranged, and the opening faces one side of the post-cast strip.

7. Post-cast strip template manufacturing and installation

After the water stop 5 is fixedly welded, a wood template is adopted for plugging the post-cast strip position template, and the template is plugged into a step rabbet shape. After the formwork of the post-cast strip is plugged, in order to ensure that no slurry leakage occurs during concrete pouring, dry and hard mortar is adopted at the bottom of the formwork on the side surface of the post-cast strip to plug the lower foot of the formwork, so that no concrete flows into a settlement ditch during concrete pouring.

8. Binding of gluten of foundation slab

And binding bottom plate gluten after the plugging of the post-pouring belt template is finished, and protecting the water stop steel plate, the post-pouring belt template and a supporting system thereof during gluten binding.

9. Floor concrete pouring

And (3) pouring the concrete of the bottom plate 4 in a layered manner, and when the concrete is poured to the post-cast strip part of the bottom plate, controlling the pouring speed well and strictly avoiding the impact damage of the concrete to the post-cast strip template. The rear pouring belt part should be reinforced to avoid leakage of concrete caused by incompact vibration.

10. Post-cast strip template removal

After concrete pouring of the bottom plate 4 is completed and certain strength is achieved, the post-pouring belt template is timely detached, and covering, heat preservation, moisture preservation and maintenance are timely performed after the template is detached.

11. Post-cast strip roughening and flushing

And the side surfaces of the bottom plate 4 are roughened, so that the joints of the new concrete and the old concrete of the post-cast strip are all roughened in place, and the surfaces which are not roughened cannot be left, particularly the internal corner parts where the water stop steel plates are embedded with the concrete. In time clear up remaining grout and rust on stagnant water steel sheet and the bottom plate reinforcing bar, the adjustment with resume the bottom plate reinforcing bar, wash the construction joint after the chisel hair, ensure that the effective thickness scope of bottom plate design does not have the residue, all residue pieces that produce are ensured to be cleared up to the subsider in.

12. Post-cast strip concrete placement

And pouring the post-cast strip 3, wherein the vibration of the part is enhanced when the post-cast strip 3 is poured, so that the concrete of the post-cast strip is compactly vibrated, and meanwhile, the auxiliary precipitation is carried out, so that the underground water is ensured to be 500mm below the bottom plate, and the precipitation is stopped until the concrete of the post-cast strip reaches the designed strength.

Claims

1. The basement bottom plate post-cast strip waterproof structure comprises bottom plates on two sides of a post-cast strip, water stop strips embedded at the bottom plates on the two sides and a concrete post-cast strip between the bottom plates on the two sides, wherein the water stop strips are positioned at the contact parts of the post-cast strip and the bottoms on the two sides; the opposite surfaces of the bottom plates at the two sides are step surfaces, water stop belts are vertically embedded in each step surface respectively, and the water stop belts extend along the length direction of the post-pouring belt; half of the water stop is positioned in the bottom plate and the other half is positioned in the post-pouring belt in the vertical direction; the two sides of the length direction of the settlement ditch are slope surfaces which incline inwards, the bottom of the settlement ditch is a concrete cushion layer, the slope surface of the settlement ditch is a brick laying surface, the inner wall of the settlement ditch is provided with a waterproof layer, and the waterproof layer extends to the bottoms of the bottom plates on the two sides.

2. The basement floor post-cast strip waterproof structure of claim 1, wherein the connection surface of the floor and the post-cast strip is a roughened surface.

3. The basement floor post-cast strip waterproof structure according to claim 1, wherein the waterproof layer is provided with a waterproof roll material layer, a waterproof layer protective layer is poured on the top of the waterproof layer, and a steel bar net layer is arranged in the waterproof layer protective layer.

4. The basement floor post-cast strip waterproof construction of claim 1, wherein the upper and lower ends of the water stop strip are bent towards one side of the post-cast strip.

5. A basement floor post-cast strip waterproofing structure according to claim 4 wherein the water stop is a water stop steel plate.

6. The basement floor post-cast strip waterproof structure of claim 1, wherein the middle upper part of the settlement ditch is provided with a step surface which is positioned below the elevation of the bottom plate, and one side of the bottom plate at two sides, which is close to the post-cast strip, is poured to the step surface.