CN205839811U - A kind of post-cast strip exterior wall advanced water-stopping processes structure - Google Patents

Abstract

An advanced water-stop treatment structure for the outer wall of the post-cast belt, in which a post-cast belt is arranged on the outer wall, and the water-stop treatment structure includes at least a water-stop steel plate, an anti-corrosion agent, a water-swellable water-stop strip and hemp asphalt, and the water-stop steel plate is welded on the At the position of the post-pouring belt, preservatives, water-swellable water-stop strips and hemp asphalt are laid in layers on the outer surface of the outer wall that is close to the post-casting belt. During construction, after the reinforcement of the exterior wall is bound, the water-swelling water-stop strips are respectively tied on the exterior surface of the exterior wall, and the water-stop steel plate is welded at the position of the post-pouring belt; after the concrete pouring of the exterior wall is completed and the curing period expires, the Apply preservative, and finally fill and compact hemp asphalt between the water-swellable waterstop strip and the outer skin of the outer wall. Compared with the waterproofing of the traditional basement exterior wall, the utility model avoids the additional advanced water-stop structure for the exterior wall of the post-casting belt, and has the advantages of convenient construction, low labor intensity, high work efficiency, remarkable anti-blocking effect, and strong impermeability and waterproof ability. And it can stop the precipitation in advance, thereby reducing the construction cost.

Description

A post-pouring structure with advanced water-stop treatment for exterior walls

technical field

The utility model relates to the field of waterproofing of exterior walls of post-pouring belts underground in high-rise buildings, in particular to an advanced water-stop treatment structure for exterior walls of post-casting strips.

Background technique

In the process of modern engineering construction, in order to solve the problems of differential settlement between the main body of the structure or the garage and the podium, structural shrinkage deformation and temperature stress deformation, the method of leaving post-pouring tape is widely used in construction projects. However, during construction, the post-cast belt of the outer wall can only be poured after the main structure is capped and the settlement is stable, and the foundation can stop dewatering. Therefore, on the premise of ensuring the stability of the foundation and the smooth construction of the main structure, how to carry out advanced water-stop treatment on the outer wall of the post-casting belt, and achieve the purpose of stopping the precipitation in advance and backfilling the soil in time has become a constant issue for engineers and technicians. Discuss the topic of research.

Reference document 1 with the application number 201210166861.8 discloses a post-cast exterior wall waterproof treatment structure. The exterior wall is provided with a water-stop strip at the position of the post-cast strip, and a fixed plate is fixed on the outer side of the exterior wall corresponding to the position of the post-cast strip. An additional waterproof layer is covered on the outside of the fixed plate to solve the technical problem that the project site is narrow and cannot be waterproofed and backfilled locally. However, the additional waterproof layer of the post-pouring belt is easily broken by the backfill, and the water layer outside the wall is easy to pass through. The gaps of the post-casting tape penetrate into the water-stop strip, so that the water-stop strip is soaked for a long time, which will affect its service life. The reference document 2 with the application number 201510032618.0 discloses a post-cast outer wall sealing structure with elastic water-stop strips. A fixed cover is fixed at the corresponding outer position of the post-cast strip, and at the same time, the outer wall of the basement and the prefabricated cover are fixed. Set up rubber waterstops in between, and carry out the backfilling work around the basement in time to ensure the stability of the foundation and the smooth construction of the main structure. It is necessary to seal the rear pouring belt of the outer wall in advance, but the gaps between the prefabricated cover plates of this scheme are not waterproof The measures are prone to water leakage, and the water-swelling waterstop is fixed on the outer surface of the outer wall of the post-casting belt, and its waterproof effect is not ideal. The comparative document 3 with the patent number ZL201320576436.6 discloses a sealing structure for the post-casting belt of underground buildings. By discharging the prefabricated slabs on the outside of the post-casting belt, the connectors connect the prefabricated slabs and the reserved steel bars for the post-casting belt. And put the leveling layer on the outside of the prefabricated slab, which is convenient for construction, reduces safety hazards, and reduces later costs. However, the gap between the prefabricated cover slab and the outer wall of the post-casting belt is not waterproof, and it is easy to leak water. Therefore, the anti-blocking effect of this measure is poor. , Poor impermeability and waterproof ability.

Contents of the invention

The technical problem to be solved by the utility model is to provide an advanced water-stop treatment structure for the outer wall of the post-casting belt in view of the above-mentioned deficiencies in the prior art, which avoids the additional advanced water-stopping structure for the outer wall of the post-casting belt, The construction is convenient, the labor intensity is low, the work efficiency is high, the anti-blocking effect is remarkable, the anti-seepage and waterproof ability is strong, the precipitation can be stopped in advance, and the construction cost is reduced.

The technical scheme that the utility model adopts for solving the problems of the technologies described above is:

An advanced water-stop treatment structure for the exterior wall of post-pouring belt, in which post-casting strip is set on the exterior wall, the water-stop treatment structure at least includes water-stop steel plate, anti-corrosion agent, water-swellable water-stop strip and hemp asphalt, and the water-stop steel plate is welded At the position of the post-casting belt, the preservative, water-swellable water-stop strip and hemp asphalt are layered and laid on the outer surface of the outer wall close to the post-casting belt.

According to the above solution, the water-stop steel plate is welded vertically along the center line of the outer wall, and the two ends of the water-stop steel plate form a bent surface, and the bent surface faces outside the wall.

According to the above scheme, the water-swellable water-stop strip is bound on the outer surface of the outer wall at a position range of 15 cm to 20 cm close to the post-casting tape.

According to the above scheme, two wooden squares are laid side by side on the surface of the water-expandable water-stop strip, and the outer surfaces of the wooden squares are fixed with bolts.

According to the above scheme, the hemp asphalt is filled and compacted in the gap between the water-swellable water-stop strip and the outer skin of the outer wall.

According to the above scheme, the water-stop treatment structure also includes prefabricated cover plates, waterproof mortar and coiled materials. After the hemp asphalt laid on the outer surface of the outer wall is solidified, the prefabricated cover plates are laid on the outside of the basement outer wall and the post-casting belt. The prefabricated cover The end connection between the board and the outer wall is made of waterproof mortar, and at the same time, a coil is laid on the outside of the board seam between the prefabricated cover boards.

According to the above scheme, the coiled material is an SBS coiled material with a thickness of 3 mm and a width of 500 mm.

The construction procedure of the advanced water-stop treatment structure of the post-pouring belt outer wall of the utility model includes the following steps:

S1. After the horizontal steel bars and vertical steel bars of the outer wall are bound, weld the water-stop steel plate at the position of the post-casting belt. The water-stop steel plate is welded vertically along the center line of the outer wall, and the bending surface of the water-stop steel plate should face outside the wall. ;

S2. Bind the water-expandable water-stop strips on the outer surface of the horizontal steel bars outside the external wall within the range of 15cm~20cm close to the post-casting belt, and lay two pieces of wood side by side on the surface of the water-expandable water-stop strips. The outer surface is fixed with bolts;

S3. After the concrete pouring of the exterior wall is completed and the maintenance period is complete, the wooden square on the surface of the water-swelling water-stop strip is pulled out, and at this time, the gap between the horizontal steel bar, the vertical steel bar and the outer skin of the outer wall is filled with hemp asphalt , brush the surface of the horizontal reinforcement at the outer wall with three coats of preservative, and finally fill and compact the gap between the water-swellable water-stop strip and the outer skin of the outer wall with hemp asphalt;

S4. After the hemp asphalt is solidified, lay a prefabricated cover plate on the outside of the outer wall and the post-casting belt. The prefabricated cover plate and the outer wall are connected with waterproof mortar at the end. Membranes (to prevent outside water from penetrating into the basement through the slab seams of the prefabricated slab).

Compared with the prior art, the beneficial effects of the utility model are:

1. Compared with the traditional advanced waterproofing of the basement exterior wall, this utility model breaks the traditional method of advanced waterproofing of the basement exterior wall. In the implementation process, it is necessary to add an additional convex structure of the advanced waterproofing structure on the outside of the rear pouring belt of the exterior wall. The measures, thus greatly reducing the construction techniques such as supporting formwork, binding steel bars, and pouring concrete, reducing labor intensity, improving work efficiency, and greatly reducing the construction period;

2. Adopting the advanced water-stop treatment structure of the utility model, since two waterproof structures of hemp asphalt and water-swellable water-stop strips are added on the surface of the outer skin of the outer wall, the existence of the two advanced waterproof treatment structures effectively ensures that Before the pouring belt is poured, the groundwater cannot penetrate into the basement through the gaps of the post-casting belt, so that the foundation precipitation can be stopped in advance, and the construction cost can be greatly reduced. The anti-blocking effect is remarkable, and the anti-seepage and waterproof ability is strong;

3. The installation and disassembly of the advanced water-stop treatment structure of the utility model are very convenient and easy. After the reinforcement of the outer wall is bound, it is only necessary to use the outer surface of the vertical reinforcement of the outer wall in the range of 15cm~20cm close to the post-casting belt. The bolts and wooden squares are covered and fixed. After the concrete pouring and curing expires, the construction can be carried out in the process of painting antiseptics and filling hemp asphalt;

4. The bolts and wooden squares used are all ready-made materials on the construction site, and no special processing is required, thus avoiding the waste of materials and saving engineering costs.

Description of drawings

Fig. 1 is the schematic diagram of the advanced water-stop treatment structure of the post-pouring belt outer wall of the utility model;

Fig. 2 is the construction layout drawing of the advanced water-stop treatment structure of the post-pouring belt outer wall of the utility model;

In the figure, 1-external wall, 2-post-pouring belt, 3-vertical steel bar, 4-horizontal steel bar, 5-waterproof steel plate, 6-prefabricated cover plate, 7-waterproof mortar, 8-preservative, 9-environment Water-swellable waterstop, 10- hemp asphalt, 11- membrane.

detailed description

The utility model is described in detail below in conjunction with accompanying drawing and embodiment.

Referring to Fig. 1, in the post-casting outer wall advanced water-stop treatment structure described in the utility model, the post-casting belt 2 is arranged on the outer wall 1, and the water-stop treatment structure includes at least a water-stop steel plate 5, a preservative 8, and a water-stop treatment structure. Water-swellable water-stop strip 9 and hemp asphalt 10, water-stop steel plate 5 welded on post-pouring belt 2, preservative 8, water-swelling water-stop strip 9 and hemp-asphalt 10 are laid in layers on post-pouring belt 2 1 outer surface of the outer wall.

The waterproof steel plate 5 is vertically welded along the center line of the outer wall 1, and the two ends of the waterproof steel plate 5 form a bent surface, and the bent surface faces outside the wall.

The water-swellable water-stop strip 9 is bound on the outer surface of the outer wall 1 within the range of 15cm to 20cm close to the post-casting tape 2, and two pieces of wood are laid side by side on the surface of the water-swellable water-stop strip 9, and the outer surface of the wood is bolted. fixed.

The hemp asphalt 10 is filled and compacted in the gap between the water-swellable water-stop strip 9 and the outer skin of the outer wall 1 .

The water-stop treatment structure also includes a prefabricated cover plate 6, waterproof mortar 7 and coiled material 11. After the hemp asphalt 10 laid on the outer surface of the outer wall 1 is solidified, the prefabricated cover plate is laid on the outside of the basement outer wall 1 and the post-casting belt 2. 6. Waterproof mortar 7 is used as the end connection between the prefabricated cover 6 and the outer wall 1, and a roll material 11 is laid on the outside of the joint between the prefabricated cover 6 at the same time.

Taking the outer wall of the basement as an example, the construction layout is shown in Figure 2. The construction process of the post-cast outer wall advanced water-stop treatment structure of the utility model includes the following steps:

S1. After the horizontal steel bar 4 and vertical steel bar 3 of the outer wall 1 are bound, weld the water-stop steel plate 5 at the position of the post-casting belt 2. The water-stop steel plate 5 is welded vertically along the center line of the outer wall 1, and the water-stop steel plate 5 The bent surface of the wall should face outward;

S2. Bind the water-swellable water-stop strips 9 on the outer surface of the horizontal steel bars 4 outside the outer wall 1 within the range of 15cm~20cm close to the post-casting belt 2, and lay two pieces side by side on the surface of the water-swellable water-stop strips 9 40×100mm wooden square, the outer surface of the wooden square is fixed with bolts;

S3. After the concrete pouring of the outer wall 1 is completed and the maintenance is completed, the wooden square on the surface of the water-expandable water-stop strip 9 is pulled out, and at this time, it is in the gap between the horizontal steel bar 4, the vertical steel bar 3 and the outer skin of the outer wall. Fill the hemp asphalt 10, paint the surface of the horizontal reinforcement 4 at the outer wall 1 with three coats of preservative 8, and finally use the hemp asphalt 10 to fill the gap between the water-swellable water-stop strip 9 and the outer skin of the outer wall 1 and compact;

S4. After the hemp asphalt 10 is solidified, lay a prefabricated cover 6 on the outer side of the outer wall 1 and the post-casting belt 2, and use waterproof mortar 7 as the end connection between the prefabricated cover 6 and the outer wall 1. At the same time, the prefabricated cover 6 A 3mm thick and 500mm wide SBS coiled material 11 is laid on the outside of the slab seam between them to prevent outside water from penetrating into the basement through the slab seam of the prefabricated cover plate 6 .

The above is only a preferred embodiment of the utility model, and of course the scope of rights of the utility model cannot be limited with this, so the equivalent changes made according to the patent scope of the utility model still belong to the protection of the utility model scope.

Claims (7)

1. An advanced water-stop treatment structure for the outer wall of post-pouring belt, and a post-casting belt is arranged on the outer wall, and it is characterized in that the water-stop treatment structure includes at least water-stop steel plate, anti-corrosion agent, water-swellable water-stop strip and hemp silk Asphalt and water-stop steel plates are welded at the position of the post-cast tape, and antiseptic, water-swellable water-stop strips and hemp asphalt are laid in layers on the outer surface of the outer wall that is close to the post-cast tape. 2. The advanced water-stop treatment structure of the post-casting outer wall according to claim 1, characterized in that the water-stop steel plate is welded vertically along the center line of the outer wall, and the two ends of the water-stop steel plate form a bent surface, and The bent side faces out of the wall. 3. The advanced water-stop treatment structure for the outer wall of the post-casting belt according to claim 1, wherein the water-swellable water-stopping strip is bound on the outer surface of the outer wall at a position range of 15 cm to 20 cm close to the post-casting belt . 4. The advanced water-stop treatment structure for the outer wall of post-pouring belt according to claim 3, characterized in that two wooden cubes are laid side by side on the surface of the water-expandable water-stop strip, and the outer surface of the wooden cubes is fixed with bolts. 5. The advanced water-stop treatment structure of the post-casting outer wall according to claim 1, characterized in that the hemp asphalt is filled and compacted in the gap between the water-swellable water-stop strip and the outer skin of the outer wall . 6. The advanced water-stop treatment structure for post-casting exterior wall according to claim 1, characterized in that, the water-stop treatment structure also includes prefabricated cover plates, waterproof mortar and coiled materials, and hemp silk to be laid on the outer surface of the exterior wall After the asphalt is solidified, a prefabricated cover is laid on the outside of the basement exterior wall and the post-casting belt. The end connection between the prefabricated cover and the exterior wall is made of waterproof mortar, and a coil is laid on the outside of the joint between the prefabricated cover. 7 . The advanced water-stop treatment structure for post-cast exterior walls according to claim 6 , wherein the coiled material is an SBS coiled material with a thickness of 3 mm and a width of 500 mm.