CN216920473U

CN216920473U - Waterproof structure of post-cast strip of underground chamber roof

Info

Publication number: CN216920473U
Application number: CN202220557017.7U
Authority: CN
Inventors: 赵学斐; 董文俊; 刘建石; 胡全信; 韦佳; 陈乐琦
Original assignee: Nanjing Yangtze River Urban Architectural Design Co Ltd
Current assignee: Nanjing Yangtze River Urban Architectural Design Co Ltd
Priority date: 2022-03-15
Filing date: 2022-03-15
Publication date: 2022-07-08
Anticipated expiration: 2032-03-15

Abstract

The utility model discloses a waterproof structure of a post-cast strip of a top plate of a basement, which comprises pre-cast concrete, a post-cast concrete strip, a steel plate net, an additional waterproof layer and a waterproof layer, wherein a gap is formed between adjacent pre-cast concrete strips, the post-cast concrete strip is filled in the gap, a construction joint is formed between the pre-cast concrete and the post-cast concrete strip, the vertical steel plate net is arranged in the construction joint, the additional waterproof layer is constructed on the surfaces of the pre-cast concrete and the post-cast concrete strip, the additional waterproof layer covers the construction joint, the waterproof layer is constructed on the surface of the additional waterproof layer, and the waterproof layer covers the additional waterproof layer and extends to the surface of the pre-cast concrete without the additional waterproof layer; the surface of the later-poured concrete strip is higher than that of the first-poured concrete, and the later-poured concrete strip and the first-poured concrete are in transition through a concrete slope. The waterproof material can guide water flow to be discharged outwards from a structural angle and can increase the fitting degree of the waterproof material; roof rainwater does not fall into the ground storehouse in the work progress.

Description

Waterproof structure of post-cast strip of underground chamber roof

Technical Field

The utility model relates to a waterproof structure of a post-cast strip of a top plate of an underground chamber, belonging to the building waterproof technology.

Background

With the acceleration of the urbanization process, basements for urban construction become larger and deeper, which is the result of the large-scale and high-rise urban construction and the full utilization of underground space. However, the basement belongs to hidden engineering, and if water leakage occurs in the future, the consequences can not be considered, so that the basement waterproofing engineering is particularly important and prominent. The basement bottom plate, especially the post-cast strip position is a high incidence area of seepage, and the treatment is particularly important after the basement bottom plate is well treated.

As shown in fig. 1, the waterproof structure of the basement roof post-cast strip which is frequently used at present is that the pre-cast concrete and the post-cast concrete strip are made into planes; constructing an additional waterproof layer on the post-cast concrete strip, wherein the additional waterproof layer covers construction joints between two sides of the post-cast concrete strip and the pre-cast concrete; then constructing a waterproof layer on the additional waterproof layer, wherein the waterproof layer covers the additional waterproof layer; and finally, constructing and covering soil. According to the waterproof structure, because the front-pouring concrete and the rear-pouring concrete are made into planes, construction joints are not easy to find, and subsequent additional waterproof layers and waterproof layers can not be effectively covered; in addition, when rivers ooze, do not do the design of drainage water conservancy diversion, therefore the risk of infiltration is higher, and can the laminating of audio amplifier waterproof material.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is as follows: in order to overcome the defects in the prior art, the utility model improves the waterproof structure of the current post-cast strip of the top plate of the underground chamber, provides the waterproof structure of the post-cast strip of the top plate of the underground chamber, and can greatly improve the waterproof performance of the post-cast joint.

The technical scheme is as follows: in order to achieve the purpose, the utility model adopts the technical scheme that:

a waterproof structure of a post-cast strip of a top plate of an underground chamber comprises pre-cast concrete, a post-cast concrete strip, a steel plate net, an additional waterproof layer and a waterproof layer, wherein a gap is formed between every two adjacent pre-cast concrete strips, the post-cast concrete strip is filled in the gap, a construction joint is formed between the pre-cast concrete and the post-cast concrete strip, the vertical steel plate net is arranged in the construction joint, the additional waterproof layer is constructed on the surfaces of the pre-cast concrete and the post-cast concrete strip, the additional waterproof layer covers the construction joint, the waterproof layer is constructed on the surface of the additional waterproof layer, and the waterproof layer covers the additional waterproof layer and extends to the surface of the pre-cast concrete without the additional waterproof layer; the surface of the later-poured concrete strip is higher than that of the first-poured concrete, and the later-poured concrete strip and the first-poured concrete are in transition through a concrete slope.

Preferably, the water-stopping steel plate is transversely arranged at the junction of the cast-in-place concrete and the cast-in-place concrete belt, two sides of the water-stopping steel plate respectively extend into the cast-in-place concrete and the cast-in-place concrete belt, the flaring of the water-stopping steel plate faces upwards, and the flaring of the water-stopping steel plate upwarps to prevent a lower opening of the water-stopping steel plate from reserving air bubbles to form a cavity when pouring.

Preferably, the surface of the later-poured concrete strip is 40-60 mm higher than the surface of the first-poured concrete, the width of the concrete slope is more than 300mm, and the width of the concrete slope is the width of an area directly covering the concrete slope above the first-poured concrete; the cast-in-place concrete and the concrete slope are integrally cast and formed.

Preferably, the additional waterproof layer extends to the surface of the precast concrete not covering the concrete slope. More preferably, the width of the area directly covering the additional waterproof layer above the precast concrete is 300mm or more.

Preferably, the waterproof layer extends to the surface of the pre-cast concrete which is not covered by the additional waterproof layer, and the width of the area directly covered by the waterproof layer above the pre-cast concrete is more than 300 mm.

Preferably, the steel plate mesh is a dense mesh steel plate mesh.

Preferably, the post-cast concrete strip is cast at one time by using micro-expansion concrete with a shrinkage compensation effect.

Preferably, the post-cast concrete strip is cured in time after being poured, and the curing time is not less than 28 days.

Preferably, the post-cast concrete strip is constructed, and the subsequent additional waterproof layer and the waterproof layer are constructed after acceptance check is qualified.

Has the advantages that: compared with the prior art, the basement roof post-cast strip waterproof structure provided by the utility model has the following advantages: (1) the structure of the upstream surface of the post-cast strip part is thickened to form a guide angle for flashing, so that water flow can be guided to be discharged from the structural angle, the fitting degree of a waterproof material can be increased, and rainwater on a top plate does not fall into a ground reservoir in the construction process; (2) by adopting the structure, accumulated water can be drained down along the slope to the part far away from the construction joint to achieve the water repellency effect of the construction joint; (3) adopt this case structure, constructor finds additional waterproof layer position more easily, can not omit, ensures the water-proof effects at roof post-cast strip position.

Drawings

FIG. 1 is a schematic diagram of a conventional waterproof structure of a post-cast strip of a basement roof at present;

FIG. 2 is a schematic view of a waterproof structure of a post-cast strip of a basement roof provided by the utility model;

the figure includes: 1-casting concrete in advance; 2-post-pouring a concrete strip; 3-dense mesh steel plate net; 4-water stop steel plate; 5-adding a waterproof layer; 6-waterproof layer; 7-covering soil.

Detailed Description

The utility model is described in detail below with reference to the figures and the embodiments.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 2, the waterproof structure of the post-cast strip of the top plate of the underground chamber comprises a pre-cast concrete 1, a post-cast concrete strip 2, a steel plate net 3, an additional waterproof layer 5, a waterproof layer 6 and a water stop steel plate 4; gaps are formed between adjacent cast-in-place concrete 1, the cast-in-place concrete strips 2 are filled in the gaps, the surfaces of the cast-in-place concrete strips 2 are higher than the surfaces of the cast-in-place concrete 1, the cast-in-place concrete strips 2 and the cast-in-place concrete 1 are in transition through concrete slopes, and the cast-in-place concrete 1 and the concrete slopes are integrally cast and formed; the water-stopping steel plate 4 is transversely arranged at the junction of the cast-in-place concrete 1 and the cast-in-place concrete 2, two sides of the water-stopping steel plate 4 respectively extend into the cast-in-place concrete 1 and the cast-in-place concrete 2, and the flaring of the water-stopping steel plate 4 is upward; a construction joint is formed between the pre-cast concrete 1 and the post-cast concrete 2, a vertical steel plate net 3 is arranged in the construction joint, an additional waterproof layer 5 is constructed on the surface of the pre-cast concrete 1 and the surface of the post-cast concrete 2, the additional waterproof layer 5 covers the construction joint and the inclined plane of the concrete slope and exceeds the construction joint, a waterproof layer 6 is constructed on the surface of the additional waterproof layer 5, and the waterproof layer 6 covers the additional waterproof layer 5 and exceeds the construction joint.

The construction of the post-cast strip waterproof structure of the basement roof comprises the following steps:

step 1: the water stop steel plates 4 on two sides of the cast-in-place concrete 1 are arranged, and dense mesh steel plate nets 3 with certain rigidity for stopping the concrete are arranged on the upper side and the lower side of the water stop steel plates 4, so that the fixation is firm; the flaring of the water-stopping steel plate 4 is tilted upwards, so that bubbles are prevented from being left at the lower opening of the water-stopping steel plate 4 to form a cavity during pouring;

step 2: pouring the cast-in-place concrete 1, and pouring the concrete slope with the slope length of 300 mm;

and step 3: a post-cast concrete strip 2 is poured in a gap formed between the adjacent pre-cast concrete 1 at one time, the post-cast concrete strip 2 is made of micro-expansion concrete with a compensation shrinkage effect, and the post-cast concrete strip 2 exceeds the plane of the pre-cast concrete 1 by 50 mm;

and 4, step 4: pouring the concrete strip 2 after curing, wherein the curing time is not less than 28 days;

and 5: after the post-cast concrete strip 2 is accepted, constructing an additional waterproof layer 5 at the positions of the post-cast concrete strip 2 and the concrete slope, wherein the additional waterproof layer 5 covers and exceeds the construction joint and the concrete slope;

step 6: and after the additional waterproof layer 5 is qualified, constructing a waterproof layer 6 at the position of the additional waterproof layer 5, and covering and exceeding the additional waterproof layer 5 by the additional waterproof layer 5.

The post-cast concrete strip 2 constructed by the scheme is 50mm higher than the plane of the pre-cast concrete 1 and forms a slope with the pre-cast concrete 1, and the length of the slopes on two sides is 300 mm. The structure of the upstream surface of the post-cast concrete strip 2 is thickened to form a guide angle for flashing, so that water flow can be guided to be discharged from the structural angle, and the fitting degree of the waterproof material can be increased; roof rainwater can not fall into the ground storehouse in the work progress, and ponding can be arranged to keeping away from construction joint 300mm position down the slope, reaches the water repellent effect of construction joint. Constructors can find the additional waterproof layer part more easily without omission, and the waterproof effect of the post-cast strip part of the top plate is ensured.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, 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; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, principal features and advantages of the utility model. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.

Claims

1. A waterproof structure of a post-cast strip of a top plate of an underground chamber comprises pre-cast concrete (1), a post-cast concrete strip (2), a steel plate net (3), an additional waterproof layer (5) and a waterproof layer (6), wherein a gap is formed between every two adjacent pre-cast concrete strips (1), the post-cast concrete strip (2) is filled in the gap, a construction joint is formed between the pre-cast concrete strips (1) and the post-cast concrete strip (2), the vertical steel plate net (3) is arranged in the construction joint, the additional waterproof layer (5) is constructed on the surfaces of the pre-cast concrete strips (1) and the post-cast concrete strips (2), the additional waterproof layer (5) covers the construction joint, the waterproof layer (6) is constructed on the surface of the additional waterproof layer (5), and the waterproof layer (6) covers the additional waterproof layer (5) and extends to the surface of the pre-cast concrete strips (1) without the additional waterproof layer (5); the method is characterized in that: the surface of the post-cast concrete strip (2) is higher than that of the pre-cast concrete (1), and the post-cast concrete strip (2) and the pre-cast concrete (1) are in transition through a concrete slope.

2. A basement roof post-cast strip waterproofing construction according to claim 1, characterized in that: the water-stopping steel plate is characterized by further comprising a water-stopping steel plate (4), wherein the water-stopping steel plate (4) is transversely arranged at the junction of the cast-in-advance concrete (1) and the cast-in-post concrete belt (2), two sides of the water-stopping steel plate (4) respectively extend into the cast-in-advance concrete (1) and the cast-in-post concrete belt (2), and the flaring of the water-stopping steel plate (4) faces upwards.

3. A basement roof post-cast strip waterproofing construction according to claim 1, characterized in that: the surface of the later-poured concrete strip (2) is 40-60 mm higher than the surface of the first-poured concrete (1), the width of the concrete slope is more than 300mm, and the width of the concrete slope is the width of an area directly covering the concrete slope above the first-poured concrete (1); the cast-in-place concrete (1) and the concrete slope are integrally cast and formed.

4. A basement roof post-cast strip waterproofing construction according to claim 1, characterized in that: the additional waterproof layer (5) extends to the surface of the precast concrete (1) which does not cover the concrete slope.

5. A basement roof post-cast strip waterproofing construction according to claim 4, characterized in that: the width of the area directly covered with the additional waterproof layer (5) above the cast-in-place concrete (1) is more than 300 mm.

6. A basement roof post-cast strip waterproofing construction according to claim 1, characterized in that: the waterproof layer (6) extends to the surface of the pre-cast concrete (1) which is not covered with the additional waterproof layer (5), and the width of the area directly covered with the waterproof layer (6) above the pre-cast concrete (1) is more than 300 mm.