CN212104588U

CN212104588U - Closed processing structure for post-cast strip passing through plugging door

Info

Publication number: CN212104588U
Application number: CN201922365839.6U
Authority: CN
Inventors: 徐云中; 蔡为民
Original assignee: Suzhou Tiandi Civil Defense Building Design Research Institute Co ltd
Current assignee: Suzhou Tiandi Design And Research Institute Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-12-08
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses an airtight processing structure when post-cast strip passes shutoff door relates to construction technical field, aims at solving and produces inhomogeneous settlement between main building and ground storehouse, leads to the pre-buried door frame of shutoff door to warp, and after the shutoff door installation, the shutoff door will produce the gap between the pre-buried door frame of shutoff door and lead to sealed effect variation, can not satisfy the protection of people's air defense and the problem of seal requirement. The main points of the technical scheme are that the post-cast strip comprises an embedded door frame connected with a main building and a post-cast strip poured at the embedded door frame, and all the embedded door frames connected with the main building are arranged in the post-cast strip. The method comprises the following steps that part of the embedded door frames connected with a main building are all arranged in a post-cast strip with a large expansion size, so that the embedded door frames cannot deform when large uneven settlement is generated between the main building and a ground reservoir; when the construction of the main body is finished, the large post-cast strip is cast and expanded after most of settlement is finished, the integral integrity of the pre-cast door frame can be effectively guaranteed without deformation, and the requirements on protection and tightness of the civil air defense plugging door are met.

Description

Closed processing structure for post-cast strip passing through plugging door

Technical Field

The utility model belongs to the technical field of the technique of construction and specifically relates to an airtight processing structure when post-cast strip passes the shutoff door is related to.

Background

The post-cast strip is a temporary construction joint reserved at a corresponding position of a foundation slab in order to prevent a cast-in-place reinforced concrete structure from generating harmful cracks due to nonuniform self shrinkage or nonuniform settlement in the building construction, and concrete is poured and tamped into the construction joint after a period of time to connect the structures into a whole.

Referring to fig. 1 and 2, a conventional sealing treatment mechanism for a post-cast strip passing through a plugging door comprises a post-cast strip 1 with a width of 800mm or 1000mm, wherein the post-cast strip 1 directly passes through an embedded door frame 21 of the plugging door 2, the embedded door frame 21 of the plugging door 2 is integral, and two sides of the embedded door frame 21 are respectively cast with different parts such as a ground depot and a main building integrally.

The above prior art solutions have the following drawbacks: in the long-time foundation deformation of the main building main body structure construction, large uneven settlement can be generated between the main building and the ground reservoir, so that the embedded door frame 21 of the plugging door 2 is deformed, after the plugging door 2 is installed, a gap is generated between the plugging door 2 and the embedded door frame 21, so that the sealing effect is poor, the protection and tightness requirements of civil air defense cannot be met, and further improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an airtight processing structure when post-cast strip passes the shutoff door, it has the effect that makes shutoff door frame non-deformable, thereby satisfy the protection and the seal requirement of people's air defense shutoff door.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a sealing treatment structure for a post-cast strip passing through a plugging door comprises a pre-embedded door frame connected with a main building and a post-cast strip poured at the pre-embedded door frame, wherein the pre-embedded door frame connected with the main building is completely arranged in the post-cast strip.

The utility model discloses further set up to: the post-pouring belt comprises a concrete mortar layer, an expansion hole formed in the middle upper portion of the concrete mortar layer and a water-swelling water stop strip arranged in the expansion hole.

The utility model discloses further set up to: the expansion hole is also internally provided with a rubber strip for sealing the expansion hole, and the rubber strip is positioned on the outer side of the water-swelling water stop strip.

The utility model discloses further set up to: the rubber strip is provided with a water diversion hole for guiding water to the water-swelling water stop strip along the width direction of the swelling hole.

The utility model discloses further set up to: one end of the water diversion hole close to the water-swelling water stop strip is arranged in a downward inclining mode.

To sum up, the utility model discloses a beneficial technological effect does:

1. by enlarging the range of the post-cast strip, the embedded door frames of the partial plugging doors connected with the main building are all arranged in the enlarged post-cast strip, so that the embedded door frames cannot deform when large uneven settlement is generated between the main building and the ground reservoir; when the construction of the main body is finished, a large post-cast strip is cast and expanded after most of settlement is finished, so that the integral integrity and no deformation of the embedded door frame can be effectively ensured, and the requirements on protection and tightness of the civil air defense plugging door are met;

2. through the setting of rubber strip and water-swelling sealing rod, drive the rubber strip and expand to the inflation hole pore wall together when water-swelling sealing rod absorbs water inflation, water-swelling sealing rod and rubber strip cooperation are sealed the inflation hole, prevent that the concrete mortar layer from producing the fracture after the cycle of many times freeze thawing, further improve the waterproof performance of post-cast strip.

Drawings

FIG. 1 is a plan view of a post-cast strip of a steel gate at a plugging part in the background art;

FIG. 2 is a processing elevation view of a post-cast strip of a steel gate at a plugging part in the background art;

FIG. 3 is a plan view of the post-cast strip for the steel gate at the sealing position of the embodiment of the present invention;

FIG. 4 is a vertical view of the post-cast strip for the steel gate at the sealing position of the embodiment of the present invention;

fig. 5 is a schematic structural view for showing the water-swellable stop.

In the figure, 1, post-cast strip; 2. plugging the door; 21. pre-burying a door frame; 3. a concrete mortar layer; 31. expanding the hole; 4. a water-swelling sealing strip when meeting water; 5. a rubber strip; 51. a water diversion hole.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Referring to fig. 3 and 4, for the utility model discloses a closed processing structure when post-cast strip passes shutoff door, include the pre-buried door frame 21 that links to each other with the main building and pour post-cast strip 1 in pre-buried door frame 21 department, in this embodiment, the pre-buried door frame 21 that links to each other with the main building is whole to be set up in post-cast strip 1. The embedded door frame 21 of a part of the plugging doors 2 connected with the main building is completely arranged in the enlarged post-cast strip 1, so that the embedded door frame 21 cannot deform when large uneven settlement is generated between the main building and a ground reservoir; when the construction of the main body is finished, the large-scale post-cast strip 1 is cast and expanded after most of settlement is finished, the integral integrity and no deformation of the embedded door frame 21 can be effectively guaranteed, and the requirements on protection and tightness of the civil air defense plugging door are met.

Referring to fig. 5, the post-cast strip 1 includes a concrete mortar layer 3. In cold weather, water in the concrete gaps forms fatigue stress under the combined action of ice expansion pressure and osmotic pressure under the actions of dry-wet alternation and freeze-thaw cycle, so that the concrete is degraded and damaged from the outside to the inside. After multiple freeze-thaw cycles, the concrete mortar layer 3 is prone to cracking. In order to prevent moisture from permeating from the crack, an expansion hole 31 is formed in the concrete mortar layer 3 along the width direction of the concrete mortar layer, and the expansion hole 31 is positioned at the middle upper part of the concrete mortar layer 3. The expansion hole 31 is internally provided with a water-swelling water stop strip 4 and a rubber strip 5 in sequence from inside to outside. The water-swelling sealing rod 4 is composed of macromolecule inorganic water-absorbing swelling material and rubber, and can absorb water and expand in volume when meeting water, so as to block the gap, form a waterproof plastic colloid, and achieve the purpose of seepage prevention and leakage prevention. Meet water inflation sealing rod 4 and rubber strip 5 and all be strip and integrated into one piece, rubber strip 5 and meet water inflation sealing rod 4 cooperation with the inflation hole 31 sealed, improve the waterproof performance of post-cast strip 1 for post-cast strip 1 is difficult for producing the fracture. A groove is arranged in the rubber strip 5 and used for placing the water-swelling water stop strip 4. Rubber strip 5 parcel is lived the top surface and the bottom surface of meeting water inflation sealing rod 4 like this for the leakproofness of concrete mortar layer 3 is better.

Referring to fig. 5, rubber strip 5 is provided with water guiding hole 51 guiding water to water-swelling water stop strip 4, and water guiding hole 51 inclines downwards near the one end of water-swelling water stop strip 4, and water guiding hole 51 of downward sloping can be well with remaining water in the gap drainage for water-swelling water stop strip 4 and absorbed by water-swelling water stop strip 4, further improves the waterproof performance of concrete mortar layer 3.

The implementation principle of the embodiment is as follows: water on the surface of the concrete mortar layer 3 flows to the water swelling water stop strip 4 from the water guide hole 51 to be absorbed, the water swelling water stop strip 4 drives the rubber strip 5 to swell to the hole wall of the swelling hole 31 together when absorbing water and swelling, the water swelling water stop strip 4 and the rubber strip 5 are matched to seal the swelling hole 31, the waterproof performance of the post-cast strip 1 is improved, and the post-cast strip 1 is not easy to crack.

The embedded door frame 21 of a part of the plugging doors 2 connected with the main building is completely arranged in the enlarged post-cast strip 1, so that the embedded door frame 21 cannot deform when large uneven settlement is generated between the main building and a ground reservoir; when the construction of the main body is finished, the large-scale post-cast strip 1 is cast and expanded after most of settlement is finished, the integral integrity and no deformation of the embedded door frame 21 can be effectively guaranteed, and the requirements on protection and tightness of the civil air defense plugging door are met.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a closed processing structure when post-cast strip passes shutoff door which characterized in that: the building construction method comprises an embedded door frame (21) connected with a main building and a post-cast strip (1) poured at the embedded door frame (21), wherein the embedded door frame (21) connected with the main building is completely arranged in the post-cast strip (1).

2. A containment disposal structure for post-cast strip passing through a closure door as claimed in claim 1, wherein: the post-cast strip (1) comprises a concrete mortar layer (3), an expansion hole (31) formed in the middle upper portion of the concrete mortar layer (3) and a water-swelling water stop strip (4) arranged in the expansion hole (31).

3. A containment disposal structure for post-cast strip passing through a closure door as claimed in claim 2, wherein: the expansion hole (31) is internally provided with a rubber strip (5) for sealing the expansion hole (31), and the rubber strip (5) is positioned on the outer side of the water-swelling water stop strip (4).

4. A containment disposal structure for post-cast strip passing through a closure door as claimed in claim 3, wherein: rubber strip (5) are seted up along the width direction of inflation hole (31) and are led water to diversion hole (51) of meeting water inflation sealing rod (4).

5. A sealing treatment structure for a post-cast strip passing through a sealing door according to claim 4, characterized in that: one end of the water diversion hole (51) close to the water-swelling water stop strip (4) is arranged in a downward inclined mode.