CN219508856U - Basement roof subsides post-cast strip pre-closed cover plate structure - Google Patents

Abstract

The utility model discloses a pre-closed cover plate structure of a post-pouring zone for subsidence of a top plate of a basement, and relates to the technical field of pre-closed of post-pouring zones for subsidence of top plates of the basement, and the technical scheme is that the pre-closed cover plate structure comprises a cover plate arranged above the post-pouring zone for subsidence, wherein two ends of the cover plate are provided with inward-sinking steel bar lifting rings, and a UPVC pipe is arranged at the central position of the cover plate as a pouring port; the root of the bottom of the UPVC pipe is provided with a waterproof structure. The beneficial effects of the utility model are as follows: through precast concrete apron, after the basement roof is pour and finishes, the post-cast strip is pre-sealed through precast concrete apron, reserve UPVC pouring hole on every apron, the seam position is handled with the cement sand, carries out waterproof and waterproof protective layer operation above that, forms follow-up backfill operation condition, alternates outdoor road and landscape process in advance, has both satisfied the construction requirement of subsidence post-cast strip, solves the restriction problem each other of traditional construction process again, has accelerated the construction progress.

Description

Basement roof subsides post-cast strip pre-closed cover plate structure

Technical Field

The utility model relates to the technical field of pre-sealing of post-pouring strips for basement top plate settlement, in particular to a pre-sealing cover plate structure of a post-pouring strip for basement top plate settlement.

Background

The post-pouring belt is arranged for solving the settlement difference between a main building and a skirt building of a high-rise building, is widely used in the high-rise building, and is generally agreed to be closed by a design unit after the top-closing settlement of the main building structure is basically stable. In recent years, along with the continuous progress of building design concepts, the concept of pursuing green and focusing on ecology is more interesting, the basement roof is backfilled with green plants to form green landscapes, and the green landscapes become the standard of communities. Generally, the basement roof is constructed, then waterproof operation is carried out, a waterproof protection layer is poured, then earth backfilling is carried out, and landscape cultivation is carried out, wherein the whole construction flow is as follows: basement top concrete pouring, post-sedimentation pouring of a post-pouring belt (after the tower main body structure is capped), waterproof construction, waterproof protection layer construction, earthwork backfilling and outdoor road and garden landscape.

Considering that the post-pouring zone for settlement can be poured after the tower main body structure is capped, the basement roof cannot be subjected to subsequent operations such as waterproofing before the post-pouring zone for settlement is poured, outdoor roads and landscape cannot be inserted, loops cannot be formed on site, and the site construction progress is severely restricted.

Disclosure of Invention

In order to achieve the above-mentioned aim, the present utility model provides a pre-closed cover plate structure for a post-pouring zone for a basement roof settlement.

The technical scheme is that the device comprises a cover plate arranged above a sedimentation post-pouring belt, wherein two ends of the cover plate are provided with inward sinking steel bar hanging rings, and a UPVC pipe is arranged in the central position of the cover plate to serve as a pouring port;

the UPVC pipe is divided into an upper half section and a lower half section, and a waterproof structure is arranged at the root of the bottom of the UPVC pipe.

The cover plate and the sedimentation post-pouring belt are matched with the backfill thickness.

The joint surface of the sedimentation post-pouring belt is set to be a rough surface.

The bottom of the sedimentation post-pouring belt is provided with a template and a support, and the template and the support are independently arranged.

And plugging gaps between the cover plates and the top plate of the basement by using cement mortar in a ratio of 1:2.

The waterproof structure comprises a drainage slope arranged on the leveling layer, and the height of the drainage slope is more than or equal to 30mm;

a waterproof layer is arranged at the flashing position of the UPVC pipe, an additional layer is arranged below the waterproof layer, and the flashing height of the waterproof layer at the flashing position of the UPVC pipe is more than or equal to 250mm;

the waterproof layer coiled material is characterized in that a metal fastening hoop and a sealing material are arranged at the position of the receiving head of the waterproof layer coiled material, and waterproof paint is arranged at the position of the receiving head of the coating film.

The upper half section is connected with the lower half section through a joint, a pipe cap is arranged at the cutting position of the top of the upper half section, and the inner diameter of the pipe cap is matched with the diameter of a UPVC pipe.

The cover plate is 1200mm in width, 1500mm in length and 100mm in thickness, is arranged as a one-way plate, is internally provided with a single-layer steel bar, the main steel bar is phi 12@150, the distribution steel bar is phi 8@200, the strength grade of the concrete is C30, and the thickness of the stressed steel bar protection layer is 20mm;

the specification of the steel bar hanging ring is phi 8; the steel bar hanging ring is convenient to hoist and mount, and is pressed into the invagination position and trowelled by mortar before waterproof construction so as not to influence the construction of the upper waterproof layer;

the specification of the UPVC pipe is DN150;

the bottom of the UPVC pipe is 400mm in height, the joint is adopted to extend to 2200mm before backfilling of earthwork, and the height is 200mm higher than the outdoor ground, so that convenience in installation and operation of a cover plate in the earlier stage is ensured; the UPVC pipe has the characteristics of high strength, light weight, aging resistance, small flow resistance, good corrosion resistance and the like, and is an ideal material for making the embedded sleeve;

the width of the additional layer in the plane and the vertical plane is not less than 250mm;

the waterproof layer coiled material is tightly sealed by using a metal fastening hoop and a sealing material, and the coating collecting head is coated with waterproof paint for multiple times, so that the hidden danger of water seepage of a pipe orifice is avoided.

The technical scheme provided by the embodiment of the utility model has the beneficial effects that: the scheme provides a basement roof subsides post-cast strip and seals apron structure in advance, through prefabricating and subside post-cast strip width and backfill soil thickness assorted concrete cover plate, after the basement roof is pour and finishes, can be in any time through prefabricating concrete cover plate to post-cast strip and seal in advance, reserve UPVC pouring hole on every piece of apron, the seam position is handled to cement sand, pack and roof between the gap, carry out waterproof and waterproof protective layer operation on it, form follow-up backfill soil operation condition, interlude outdoor road and landscape process in advance, whole construction flow becomes: basement roof concrete pouring, pre-closing a sedimentation post-pouring belt (only required to meet the operation condition on site), waterproof construction, waterproof protection layer construction, earthwork backfilling, outdoor road, garden landscape, self-compacting concrete pouring of the sedimentation post-pouring belt, not only meeting the construction requirement of the sedimentation post-pouring belt, but also solving the problem of mutual restriction of the traditional construction process and accelerating the construction progress;

the self-compaction waterproof concrete doped with the expanding agent can completely fill the template by self-weight leveling without vibrating, has good waterproof effect, can ensure no leakage point of the basement in rainy season, ensures the synchronization of the basement decoration and the main body, and ensures the engineering progress and the engineering quality;

the problems of pouring the post-pouring belt and backfilling the earthwork of the top plate of the basement are solved, and the aims of saving energy and land, shortening the overall progress of engineering and increasing economic benefit are achieved.

Drawings

Fig. 1 is a plan view of a cover plate according to an embodiment of the present utility model.

Fig. 2 is an overall schematic diagram of post-cast strip cover plate installation in an embodiment of the present utility model.

FIG. 3 is a diagram showing a large scale of installation of a post-cast strip cover plate according to an embodiment of the present utility model.

Fig. 4 is a schematic representation of a waterproof structure at the bottom of a UPVC pipe in accordance with an embodiment of the present utility model.

FIG. 5 is a schematic view of earth backfilling and concrete placement of a basement roof according to an embodiment of the utility model.

Wherein, the reference numerals are as follows: 20. settling the post-cast strip; 21. a basement roof; 23. a leveling layer; 1. a cover plate; 12. an upper half section; 2. a lower half section; 3. a steel bar hanging ring; 4. a template and a bracket; 5. cement mortar; 6. a waterproof layer; 7. an additional layer; 8. a sealing material; 9. a metal fastening collar; 11. a joint; 15. a pipe cap.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. Of course, the specific embodiments described herein are for purposes of illustration only and are not intended to limit the utility model.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the utility model, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operate in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the creation of the present utility model can be understood by those of ordinary skill in the art in a specific case.

Example 1

Referring to fig. 1 to 5, the utility model provides a basement roof settlement post-pouring strip pre-closing cover plate structure, which comprises a cover plate 1 arranged above a settlement post-pouring strip 20, wherein two ends of the cover plate 1 are provided with inward-sinking steel bar lifting rings 3, and a UPVC pipe is arranged in the central position of the cover plate 1 as a pouring opening;

the UPVC pipe is divided into an upper half section 12 and a lower half section 2, and a waterproof structure is arranged at the root of the bottom of the UPVC pipe.

The cover plate 1 and the post-sedimentation casting belt 20 are matched with the thickness of backfill.

The junction surface of the post-sedimentation casting belt 20 is set to be a rough surface.

The bottom of the sedimentation post-pouring zone 20 is provided with a template and a bracket 4, and the template and the bracket 4 are independently arranged.

The gaps between the cover plates 1 and the basement roof 21 are plugged with cement mortar 5 in a ratio of 1:2.

The periphery of the pipe wall of the UPVC pipe is provided with a leveling layer 23, the waterproof structure comprises a drainage slope arranged on the leveling layer 23, and the height of the drainage slope is more than or equal to 30mm;

a waterproof layer 6 is arranged at the flashing position of the UPVC pipe, an additional layer 7 is arranged below the waterproof layer 6, and the flashing height of the waterproof layer 6 at the flashing position of the UPVC pipe is more than or equal to 250mm;

the metal fastening hoop 9 and the sealing material 8 are arranged at the position of the coiled material receiving head of the waterproof layer 6, and the waterproof coating is arranged at the position of the coating receiving head.

The upper half section 12 and the lower half section 2 are connected through a joint 11, a pipe cap 15 is arranged at the cutting position of the top of the upper half section 12, and the inner diameter of the pipe cap 15 is matched with the diameter of a UPVC pipe.

Taking a common 1m wide sedimentation post-pouring belt and 2m thick backfill soil as examples, the main construction steps are as follows:

1. prefabrication of concrete cover plates

(1) The cover plate 1 is 1200mm wide, 1500mm thick and 100mm thick, is arranged as a one-way plate, is internally provided with a single-layer steel bar, the main bar is phi 12@150, the distribution bar is phi 8@200, the strength grade of the concrete is C30, and the thickness of the stressed steel bar protection layer is 20m;

(2) The two ends of the cover plate 1 are provided with the inward sinking phi 8 steel bar lifting rings 3, so that the lifting rings are conveniently lifted and installed, pressed into the inward sinking positions before waterproof construction and trowelled by mortar, and the construction of an upper waterproof layer is not influenced;

(3) A UPVC pipe with DN150 is reserved at the central position of each cover plate 1 as a pouring port, the UPVC is arranged in two end sections, the height of the lower half section 2 is 400mm, the joint 11 is adopted to extend to 2200mm before backfilling of earthwork, and the height is 200mm higher than the outdoor ground, so that the convenience of the installation operation of the cover plates 1 in the earlier stage is ensured; the UPVC pipe has the characteristics of high strength, light weight, aging resistance, small flow resistance, good corrosion resistance and the like, and is an ideal material for making the embedded sleeve;

2. mounting of concrete cover plates

(1) After the concrete of the basement roof 21 is poured and the strength of the basement roof reaches 75%, the cover plate 1 can be installed; before the cover plate 1 is installed, the joint surface of the post-pouring belt 20 is treated according to the requirement, the joint surface is a rough surface, the floating slurry, loose stones and a weak concrete layer are removed, and meanwhile, the steel bars at the post-pouring belt 20 are ensured to be installed;

(2) The templates and the supports 4 at the positions of the sedimentation post-pouring strips 20 need to be reserved for the time designed to allow the sedimentation post-pouring strips 20 to be closed, the templates and the supports 4 are independently arranged, the templates and the supports 4 at the two sides are convenient to remove in time, and the turnover use of the templates and the supports 4 is quickened; before the cover plate 1 is installed, the installation conditions of the template and the bracket 4 are checked, and sundries in the template are cleaned;

(3) When the cover plates 1 are installed, a tower crane installation or manual hoisting mode can be adopted, hooks are used for hanging the cover plates 1 on the steel bar hanging rings 3 at the two ends of the cover plates, the cover plates are stably hoisted and placed on the post-sedimentation pouring belt 20, gaps between the cover plates 1 and the basement roof 21 are blocked by using 1:2 cement mortar 5, and leveling treatment is carried out; after the cover plate is installed, the steel bar hanging ring 3 is smashed into the sinking position of the cover plate 1, and mortar is used for leveling;

3. basement roof waterproof construction

(1) Sealing the cover plate of the post-pouring belt after settlement, and drying seam-closing mortar to perform waterproof operation; the waterproof of the basement roof 21 needs to be carried out according to project waterproof design schemes, and waterproof methods adopted by different projects can be different;

(2) The node waterproof at the pouring port of the UPVC pipe can be constructed according to the requirements of roofing engineering technical Specification (GB 50345-2012) for roofing pipelines: the leveling layer 23 around the UPVC pipe should be smeared with a drainage slope with the height not less than 30mm; an additional layer 7 is additionally arranged below the waterproof layer 6 at the pipeline flashing position, and the width of the additional layer 7 in the plane and the vertical face is not smaller than 250mm; the flashing height of the waterproof layer 6 at the pipeline flashing position is not less than 250mm; the coiled material receiving head is sealed by a metal fastening hoop 9 and a sealing material 8, and the coating film receiving head is coated with waterproof paint for multiple times, so that the hidden danger of water seepage of a pipe orifice is avoided;

(3) After the waterproof layer 6 is constructed, carrying out subsequent operations such as waterproof protection layer and the like, and creating conditions for backfilling earthwork, and inserting outdoor roads and landscaping as soon as possible;

4. basement roof earthwork backfill and post-pouring belt pouring

(1) The earthwork layered backfilling can be carried out after the waterproof protective layer reaches the design strength; before backfilling, communicating the upper half section 12 and the lower half section 2 of the UPVC pipe to ensure that the height of the UPVC pipe is 200mm higher than the outdoor finished surface;

(2) In the process of backfilling earthwork, backfilling and compacting in layers until reaching a target elevation; during the backfilling process, whether the UPVC pipe is offset, falls off and is damaged is checked, if the UPVC pipe is problematic, the UPVC pipe is repaired in time;

(3) After the main body structure is capped, analyzing sedimentation observation data, and pouring the sedimentation post-pouring belt 20 after design confirmation; the sedimentation post-pouring belt 20 adopts self-compaction waterproof concrete doped with an expanding agent, cement adopts ordinary Portland cement, sand is medium sand, pebble grading meets the standard requirement, the grain diameter is controlled within 5-16 mm, the slump value is 250+/-20 mm, and the concrete is not layered and isolated. In order to reduce the water-cement ratio, adding a high-performance water reducing agent; to improve the workability of the concrete, adding fly ash and blast furnace slag powder; to compensate the shrinkage of the concrete and strengthen the bonding force between the concrete and the pipe wall, a WEA expanding agent is added; the initial setting time of the concrete is 8 hours;

(4) After the concrete arrives at the site, slump, expansion and workability of the concrete are tested, so that the concrete meets the technical requirements and the test block is reserved according to the standard requirements; when the concrete is poured, the self-compaction waterproof concrete can be poured into the receiving hopper in a pumping or tower crane lifting mode, and the self-compaction concrete pouring flow is smooth by a method of knocking a template bottom plate, so that the surface is smooth after the die is removed; after the post-cast strip concrete pouring is completed, pouring the sleeve concrete to the elevation of 250mm below the natural terrace;

(5) And manually excavating the filled soil with the thickness of not less than 250mm after pouring, cutting the UPVC pipe, and adhering and plugging the end part by adopting a pipe cap 15 with the same diameter.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (7)

1. The pre-closed cover plate structure of the post-pouring zone of the basement roof settlement is characterized by comprising a cover plate (1) arranged above the post-pouring zone (20), wherein two ends of the cover plate (1) are provided with inward-sinking steel bar hanging rings (3), and a UPVC (unified power supply) pipe is arranged at the central position of the cover plate (1) as a pouring opening;

the UPVC pipe is divided into an upper half section (12) and a lower half section (2), and a waterproof structure is arranged at the root of the bottom of the UPVC pipe.

2. The basement roof settlement post-cast strip pre-closed cover plate structure according to claim 1, wherein the cover plate (1) and the settlement post-cast strip (20) are matched with the backfill thickness.

3. The basement roof settlement post-cast strip pre-closure deck structure according to claim 1, wherein the joint surface of the settlement post-cast strip (20) is provided as a roughened surface.

4. The basement roof settlement post-pouring strip pre-closing cover plate structure according to claim 1, wherein a template and a bracket (4) are arranged at the bottom of the settlement post-pouring strip (20), and the template and the bracket (4) are independently arranged.

5. Basement roof settlement post-pouring zone pre-closing cover plate structure according to claim 1, characterized in that the gaps between the cover plates (1) and the basement roof (21) are plugged with cement mortar (5) of 1:2.

6. The basement roof settlement post-pouring strip pre-closing cover plate structure according to claim 1, wherein a leveling layer (23) is arranged around the pipe wall of the UPVC pipe, the waterproof structure comprises a drainage slope arranged on the leveling layer (23), and the height of the drainage slope is more than or equal to 30mm;

a waterproof layer (6) is arranged at the flashing position of the UPVC pipe, an additional layer (7) is arranged below the waterproof layer (6), and the flashing height of the waterproof layer (6) at the flashing position of the UPVC pipe is more than or equal to 250mm;

the waterproof layer (6) coiled material collecting head is provided with a metal fastening hoop (9) and a sealing material (8), and the coating collecting head is provided with waterproof paint.

7. The basement roof settlement post-pouring strip pre-closing cover plate structure according to claim 1, wherein the upper half section (12) and the lower half section (2) are connected through a joint (11), a pipe cap (15) is arranged at a cutting position of the top of the upper half section (12), and the inner diameter of the pipe cap (15) is matched with the diameter of a UPVC pipe.