CN112144577B

CN112144577B - Interim shutoff node in basement bottom plate post-cast strip

Info

Publication number: CN112144577B
Application number: CN202011008653.6A
Authority: CN
Inventors: 周小燕; 韩巨龙; 周龙; 汪廷辉
Original assignee: Jiangsu Architectural Design And Research Institute Co ltd
Current assignee: Jiangsu Architectural Design And Research Institute Co ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2022-06-03
Anticipated expiration: 2040-09-23
Also published as: CN112144577A

Abstract

The invention discloses a temporary plugging node for a post-cast strip of a bottom plate of an underground chamber. The temporary plugging node comprises a bottom plate, wherein the bottom plate is arranged on a concrete cushion, and an extruded sheet and a concrete slab are embedded in the bottom plate; the extruded sheet is a polystyrene board, a steel plate water stop is further embedded in the bottom plate, and two ends of the steel plate water stop are connected to the extruded sheet and the concrete slab respectively. According to the temporary plugging node for the post-cast strip of the underground chamber floor, the internal polystyrene board is used for wrapping the post-cast strip position water-stop steel plate and the steel bars, and the polystyrene board is light in self weight, convenient to transport and capable of having a certain bearing capacity to guarantee concrete pouring forming, so that the post-cast strip position can be effectively protected, later-stage dismantling is convenient, construction is facilitated, and quality is controllable and guaranteed.

Description

Interim shutoff node in basement bottom plate post-cast strip

Technical Field

The invention relates to the field of constructional engineering, in particular to a temporary plugging node for a post-cast strip of a bottom plate of an underground chamber.

Background

In the building engineering, especially for the relevant operation of basement, in order to guarantee the quality effect of waterproof function etc. basement bottom plate post-cast strip reservation treatment measure plays important effect. At present, the scale of a common building is large, and in order to meet the use function requirements of the building, a basement is often arranged for communication, and a settlement joint is not arranged. However, due to the large scale of the whole project of the construction project, the construction project is often developed and constructed in batches in stages, and the local post-cast strip construction seam position may be left for a long time, so that the quality effect of the post-cast strip construction seam is influenced.

For the problem, the general method at present is to adopt low-grade concrete to pour the post-cast strip, and adopt machinery to chisel out the concrete in the later stage, and clear away the concrete on the reinforcing bar and connect with the following new construction member. However, in the process of using machinery to chisel off the concrete at the blocked part, the water-stopping steel plate at the corresponding part is often damaged to a certain extent, so that the water-stopping steel plate needs to be repaired and reinforced, the construction is difficult, and the construction quality and the waterproof and anti-permeability effects at the joint are not easy to guarantee.

Disclosure of Invention

In order to solve the problems, the invention provides a temporary plugging node for a post-cast strip of a bottom plate of an underground chamber.

According to one aspect of the invention, a temporary plugging node for a post-cast strip of a basement floor is provided, which comprises a floor, wherein the floor is installed on a concrete cushion layer, and an extruded plate and a concrete plate are buried in the floor; the extruded sheet is a polystyrene board, a steel plate water stop is further embedded in the bottom plate, and two ends of the steel plate water stop are connected to the extruded sheet and the concrete slab respectively.

According to the temporary plugging node for the post-cast strip of the underground chamber floor, the internal polystyrene board is used for wrapping the post-cast strip position water-stop steel plate and the steel bars, and the polystyrene board is light in self weight, convenient to transport and capable of having a certain bearing capacity to guarantee concrete pouring forming, so that the post-cast strip position can be effectively protected, later-stage dismantling is convenient, construction is facilitated, and quality is controllable and guaranteed.

In some embodiments, the concrete pad is divided into sections of varying thickness, each section having a thickness in the range of 100mm to 250 mm. Thus, by setting the thickness of the concrete pad, it can be seen that the thickness of the concrete pad can be locally increased to 250mm in some cases.

In some embodiments, one end of the extruded sheet is provided with a notch, and one end of the steel sheet waterstop extends into the notch. Therefore, a concrete structure of the joint of the extruded sheet and the steel plate water stop belt is arranged.

In some embodiments, the steel water stop is a Q235 gauge embossed steel sheet having a thickness of no less than 3 mm. Therefore, the steel plate water stop belt is made of the selected material, and the embossing is arranged on the surface of the steel plate, so that the occlusion between the steel plate and concrete is increased.

In some embodiments, the extruded sheet in the bottom panel is cast with a mortar layer on the outside, the mortar layer being M30 cement mortar. From this, can effectively fix the extruded sheet through setting up the mortar layer.

In some embodiments, a plurality of longitudinal reinforcing bars are embedded in the bottom plate. From this, can improve the stability on mortar layer through setting up longitudinal reinforcement.

In some embodiments, each of the longitudinal rebars is connected to each other by a plurality of tie bars. From this, connect each longitudinal reinforcement through setting up the lacing wire and can further improve the stability on mortar layer.

In some embodiments, the bottom of the base plate is mounted on a rubber-plastic plate mounted on a concrete pad. Therefore, the rubber-plastic plate has good performances of fire prevention, moisture prevention, steam insulation and the like, can effectively protect the reserved concrete part, and increases the durability of the node.

In some embodiments, a polymer waterproof roll is laid between the rubber-plastic plate and the bottom plate. From this, can effectively guarantee the water-proof effects at construction joint position during the construction through setting up polymer waterproofing membrane.

In some embodiments, the rubber plastic plate has a thickness of 9 mm. Thereby, the size of the rubber-plastic plate is set.

Drawings

FIG. 1 is a schematic structural diagram of a temporary plugging node of a post-cast strip of a bottom plate of an underground chamber according to an embodiment of the invention;

FIG. 2 is a schematic diagram I of the internal structure of a temporary plugging node of a post-cast strip of a basement floor shown in FIG. 1;

fig. 3 is a schematic diagram of the internal structure of the temporary plugging node of the post-cast strip of the basement floor shown in fig. 1.

In the figure: the waterproof concrete slab comprises a bottom plate 1, a concrete cushion layer 2, an extruded sheet 3, a concrete slab 4, a steel plate water stop belt 5, a notch 6, a mortar layer 7, longitudinal steel bars 8, tie bars 9, an rubber sheet 10 and a high polymer waterproof coiled material 11.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 schematically shows a structure of a temporary plugging node of a basement floor post-cast strip according to an embodiment of the invention, fig. 2 shows a part of the structure of the temporary plugging node of the basement floor post-cast strip in fig. 1, and fig. 3 shows another part of the structure of the temporary plugging node of the basement floor post-cast strip in fig. 1. As shown in fig. 1-3, the temporary plugging node comprises a base plate 1, and other main structures are arranged on the base plate 1, and the base plate 1 is arranged on a concrete cushion 2. Wherein, for save material and space, can divide into the multistage with concrete cushion 2, the thickness of each section carries out reasonable setting according to actual conditions, and the thickness of the less section of atress is less during processing, and minimum generally is 100mm, and the great section of atress can thicken during processing, can thicken to 250mm at utmost, then the thickness scope of each section of concrete cushion 2 is concentrated between 100mm-250 mm.

An extruded sheet 3, a poured concrete slab 4 and a steel plate water stop 5 are embedded in the bottom plate 1, wherein the extruded sheet 3 and the concrete slab 4 are arranged side by side, and two ends of the steel plate water stop 5 are respectively connected in the extruded sheet 3 and the concrete slab 4.

The extruded sheet 3 is a polystyrene board, has the advantages of light dead weight, convenient demoulding, quite bearing capacity and the like, can ensure the concrete pouring forming, not only can effectively protect the post-cast strip part, but also is more convenient to dismantle in the later period. Further, the extruded sheet 3 had a fire resistance rating of B1 and a strength of not less than 200 kpa.

A notch 6 is provided at one end of the extruded sheet 3, one end of the steel water stop 5 extends into the notch 6, and the other end of the steel water stop 5 extends into the concrete slab 4 to connect the two. The steel plate water stop belt 5 is preferably a Q235-grade embossed thin steel plate, the thickness of the steel plate is not less than 3mm, the surface of the steel plate is clean, and the steel plate water stop belt has no defects of corrosion, pits or scratches and the like. The processing performance and weldability of the steel plate meet the requirements of construction and specification, and embossing on the surface of the steel plate is also beneficial to increasing the occlusion of the steel plate and concrete.

And a mortar layer 7 is poured and filled outside the extruded sheet 3 of the bottom plate 1. M30 cement mortar is selected for casting the mortar layer 7.

Preferably, a plurality of longitudinal reinforcing bars 8 may be embedded in the bottom plate 1, the longitudinal reinforcing bars 8 being located outside the extruded sheet 3 and extending into the concrete slab 4. Preferably, the longitudinal steel bars 8 are connected by a plurality of tie bars 9, so as to further improve the stability of the bottom plate 1.

The bottom of the base plate 1 may be mounted on an elastomeric sheet 10, with the elastomeric sheet 10 mounted directly on the concrete pad 2. Wherein, the rubber-plastic plate 10 has advantages such as green and fire behavior is good, and its peculiar closed bubble formula structure has dampproofing, the effect that separates the vapour to can effectively protect reserved concrete part, increase the durability of node.

Preferably, the thickness of the rubber-plastic plate 10 can be selected to be 9mm, and can also be thickened according to the actual situation.

Preferably, polymer waterproofing membrane 11 has been laid between rubber and plastic board 10 and bottom plate 1, and wherein polymer waterproofing membrane 11 can reliably paste through viscose etc. and rubber and plastic board 10, then can effectively guarantee the water-proof effects at construction joint position during the construction.

The foregoing are only some embodiments of the invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a temporary shutoff node in basement bottom plate post-cast strip which characterized in that: the concrete cushion comprises a bottom plate (1), wherein the bottom plate (1) is arranged on a concrete cushion (2), and an extruded sheet (3) and a concrete slab (4) are buried in the bottom plate (1); the extruded sheet (3) is a polystyrene board, a steel plate water stop (5) is further embedded in the bottom plate (1), and two ends of the steel plate water stop (5) are respectively connected to the extruded sheet (3) and the concrete slab (4);

a notch (6) is formed in one end of the extruded sheet (3), and one end of the steel plate water stop belt (5) extends into the notch (6);

a mortar layer (7) is poured outside the extruded sheet (3) in the bottom plate (1), a plurality of longitudinal steel bars (8) are embedded in the bottom plate (1), and the longitudinal steel bars (8) are connected through a plurality of tie bars (9);

the bottom of bottom plate (1) is installed on rubber and plastic board (10), rubber and plastic board (10) are installed on concrete cushion (2).

2. The temporary plugging node of the post-cast strip of the underground chamber floor as set forth in claim 1, characterized in that: the concrete cushion (2) is divided into a plurality of sections with different thicknesses, and the thickness range of each section is 100mm-250 mm.

3. The temporary plugging node of the underground chamber floor post-cast strip according to claim 1, wherein: the steel plate water stop belt (5) is a Q235-grade embossed thin steel plate, and the thickness of the steel plate water stop belt is not less than 3 mm.

4. The temporary plugging node of the underground chamber floor post-cast strip according to claim 1, wherein: the mortar layer (7) is M30 cement mortar.

5. The temporary plugging node of the post-cast strip of the underground chamber floor as set forth in claim 1, characterized in that: and a high polymer waterproof coiled material (11) is laid between the rubber-plastic plate (10) and the bottom plate (1).

6. The temporary plugging node of the underground chamber floor post-cast strip according to claim 1, wherein: the thickness of the rubber-plastic plate (10) is 9 mm.