阅读说明：本技术 一种地下建筑抗浮泄压孔封堵结构及其施工方法 (Anti-floating pressure relief hole plugging structure for underground building and construction method thereof ) 是由 刘闵 张伟 郭德伟 王森 王洪彬 王国锋 李奕 王丽 于 2021-10-29 设计创作，主要内容包括：本发明属于建筑抗浮施工技术领域,具体涉及一种地下建筑抗浮泄压孔封堵结构及其施工方法。包括混凝土垫层、混凝土底板层和泄压孔,所述泄压孔上部有环形平台,所述环形平台上有一环形沟槽,所述泄压孔内配合设置封堵塞,所述封堵塞的上方有一止水扣环,所述止水扣环配合于所述环形沟槽内,所述止水扣环的上方为混凝土封闭层。方法包括包括以下步骤：泄压孔上部在混凝土底板层开设环形平台；在环形平台上开设出环形沟槽；将封堵塞紧密地置入泄压孔内；将止水扣环压入环形沟槽内；在止水扣环的上方灌入混凝土进行封闭。本发明的结构更强更稳定,施工止水效果更佳。(The invention belongs to the technical field of anti-floating construction of buildings, and particularly relates to an anti-floating pressure relief hole plugging structure of an underground building and a construction method thereof. Including concrete cushion, concrete floor layer and pressure release hole, pressure release hole upper portion has annular platform, there is an annular groove on the annular platform, the downthehole cooperation of pressure release sets up the shutoff and blocks up, there is a stagnant water buckle sealing up's top, the stagnant water buckle cooperates in the annular groove is interior, the top of stagnant water buckle is the concrete seal coat. The method comprises the following steps: an annular platform is arranged on the concrete bottom plate layer at the upper part of the pressure relief hole; an annular groove is formed in the annular platform; tightly placing the sealing plug into the pressure relief hole; pressing the water stop retaining ring into the annular groove; and pouring concrete above the water stop retaining ring for sealing. The invention has stronger and more stable structure and better construction water stopping effect.)

1. The utility model provides an anti pressure release hole block structure that floats of underground building, includes concrete cushion, concrete floor layer and pressure release hole, pressure release hole upper portion has annular platform, a serial communication port, there is an annular groove on the annular platform, the pressure release hole fit in sets up the shutoff stopper, there is a stagnant water buckle sealing up the top of stopping up, the stagnant water buckle cooperate in the annular groove, the top of stagnant water buckle is the concrete seal coat.

2. The underground structure anti-floating pressure relief hole blocking structure of claim 1, wherein the annular groove and the annular platform are concentrically arranged.

3. The plugging structure for the anti-floating pressure relief hole of the underground building as claimed in claim 1, wherein the outside of the plugging is tightly sleeved with a rubber tube.

4. The underground architecture anti-floating pressure relief hole plugging structure of claim 1, wherein the plugging is a pine cone.

5. The underground construction anti-floating pressure relief hole plugging structure of claim 1, wherein the annular groove is filled with plugging cement slurry.

6. A construction method of the underground building anti-floating pressure relief hole plugging structure of claim 1 is characterized by comprising the following steps:

an annular platform is arranged on the concrete bottom plate layer at the upper part of the pressure relief hole;

an annular groove is formed in the annular platform;

tightly placing the sealing plug into the pressure relief hole;

pressing the water stop retaining ring into the annular groove;

and pouring concrete above the water stop retaining ring for sealing.

7. The construction method of the blocking structure of the anti-floating pressure relief hole of the underground building as claimed in claim 6, wherein in the step (3), the rubber tube is tightly sleeved on the blocking plug, and then is hammered into the pressure relief hole, leaving the hole.

8. The construction method of the underground construction anti-floating pressure relief hole plugging structure according to claim 7, wherein in the step (3), the water in the pressure relief hole opening and the annular groove is cleaned, and then plugging cement slurry is poured on the plugging plug until at least the annular groove is filled.

9. The construction method of the underground building anti-floating pressure relief hole plugging structure according to claim 6, wherein the concrete in the concrete sealing layer is micro-expansion concrete; the water stop retaining ring is formed by welding steel plates.

Technical Field

The invention belongs to the technical field of anti-floating construction of buildings, and particularly relates to an anti-floating pressure relief hole plugging structure of an underground building and a construction method thereof.

Background

In recent years, with the development of countries and the advancement of industries, the development of building technologies is changing day by day, and along with the development and utilization of urban underground spaces, large-volume underground buildings are more and more, and develop towards deeper and larger directions. The geological conditions of the region of the Jinan are complex, the underground water is rich, the alluvial plains of the yellow river in the North are influenced by the yellow river, the water level change is large, and the cohesive soil and the stroke fossil layer in part of the region are easy to form shallow layer stagnant water during engineering construction due to the characteristics of poor permeability or no permeability and the like. Due to the fact that underground water is not destructively known and is not attached to the ground, in two years, some underground buildings float upwards.

When the underground building floats upwards, the garage bottom plate is drained and decompressed in time, and a method of opening a hole in the underground garage bottom plate is generally adopted. However, after the hole is opened and the pressure is released, how to effectively block the hole is a difficult problem which troubles constructors. Generally, a method for directly plugging by using plugging mortar is adopted, but the plugging difficulty of operation with water is high, a gap is easily formed between the plugging mortar and an original concrete structure, the plugging effect is poor, and the later-stage leakage is easy to occur.

Disclosure of Invention

In order to solve the technical problem, the invention provides an anti-floating pressure relief hole plugging structure for an underground building.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an anti pressure release hole block structure that floats of underground building, includes concrete cushion, concrete floor layer and pressure release hole, pressure release hole upper portion has annular platform, there is an annular groove on the annular platform, the downthehole cooperation of pressure release sets up the shutoff and blocks up, there is a stagnant water buckle sealing up the top of blocking up, the stagnant water buckle cooperate in the annular groove, the top of stagnant water buckle is the concrete seal coat.

Further, the annular groove and the annular platform are concentrically arranged.

Furthermore, the outer side of the sealing plug is tightly sleeved with a rubber pipe.

Further, the sealing plug is a pine cone.

Further, leaking stoppage cement slurry is arranged in the annular groove.

Has the advantages that: the sealing plug is used as a first water blocking structure, the water stopping retaining ring is used as a second water blocking structure, so that the structure can be operated with water, the pressure relief hole is firstly blocked by the sealing plug, the pressure relief hole below the sealing plug is basically isolated, and then the residual water above the sealing plug and in the annular groove is cleaned, so that the influence on the water stopping effect of the leakage stopping cement paste is avoided;

the setting up of annular groove makes annular platform form annular boss to with the cooperation of inlaying grafting each other of stagnant water retaining ring structure, make overall structure stability and intensity better, cooperate the concrete closed bed of leaking stoppage grout and top again, structural integrity is better, the stagnant water effect is better.

In order to solve the technical problem, the invention also provides a construction method of the anti-floating pressure relief hole plugging structure for the underground building.

A construction method of the underground building anti-floating pressure relief hole plugging structure comprises the following steps:

(1) an annular platform is arranged on the concrete bottom plate layer at the upper part of the pressure relief hole;

(2) an annular groove is formed in the annular platform;

(3) tightly placing the sealing plug into the pressure relief hole;

(4) pressing the water stop retaining ring into the annular groove;

(5) and pouring concrete above the water stop retaining ring for sealing.

Further, in the step (3), the rubber tube is tightly sleeved on the plugging plug, and then the rubber tube is hammered into the pressure relief hole, so that a hole is reserved.

Further, in the step (3), the water in the pressure relief hole and the annular groove is cleaned, and then the plugging cement slurry is poured above the plugging plug until the annular groove is filled at least.

Further, the concrete in the concrete sealing layer is micro-expansive concrete; the water stop retaining ring is formed by welding steel plates.

The method can be implemented under the condition of water, and the residual water at the opening is cleaned after the blocking and blocking process is performed, so that the construction of the plugging cement paste and the water-stopping retaining ring can be implemented under the anhydrous environment, and the construction quality can be effectively ensured;

the method has two water shutoff measures, can effectively resist water pressure, greatly prolongs the water seepage path, and completely avoids the leakage;

the method is effective and reliable, and can be used for plugging seepage of the raft under other conditions except in floating emergency, such as seepage of foundation bolts of construction equipment such as pre-buried tower cranes, construction elevators and the like on the raft.

Drawings

FIG. 1 is a schematic diagram of an integral matching structure of an anti-floating pressure relief hole plugging structure of an underground building;

FIG. 2 is a schematic diagram of a partial matching structure of an anti-floating pressure relief hole plugging structure of an underground building;

FIG. 3 is a schematic cross-sectional view of a matched structure of an anti-floating pressure relief hole plugging structure of an underground building;

FIG. 4 is a schematic structural view of a pressure relief hole before construction;

in the figure, a concrete bottom plate layer 1, a pressure relief hole 2, a concrete cushion layer 3, an annular groove 4, a boss 5, a plugging plug 6, a rubber tube 7, a concrete sealing layer 8 and a water stop retaining ring 9.

Detailed Description

The present invention will be described in further detail with reference to specific examples.

Example one

Fig. 1 to 4 show an anti pressure release hole block structure that floats of underground construction, including concrete cushion 3, concrete floor layer 1 and pressure release hole 2, 2 upper portions in pressure release hole have an annular platform, its characterized in that, there is an annular groove 4 on the annular platform, 2 fit in pressure release hole set up the shutoff stopper 6, there is a stagnant water buckle ring 9 in the top of shutoff stopper 6, stagnant water buckle ring 9 cooperate in annular groove 4, the top of stagnant water buckle ring 9 is concrete seal coat 8.

As shown in fig. 3, the annular groove 4 and the annular land are concentrically arranged. The annular boss 5 is formed by the annular platform due to the arrangement of the annular groove 4, and the annular boss 5 is arranged concentrically, so that the thickness of the annular boss 5 is more uniform, and the strength is higher.

The rubber tube 7 is tightly sleeved on the outer side of the sealing plug 6, so that water stopping is enhanced, and the sealing plug 6 can be favorably and smoothly hammered into the pressure relief hole 2. The rubber tube 7 is made of building rubber and can reach the level of the same service life as a building structure.

The sealing plug 6 is a pine cone. The pine cone has good corrosion resistance in water, and the corrosion resistance of the pine cone is further improved after the pine cone is soaked in anticorrosive oil, and the requirement of the service life of a building structure is completely exceeded.

And leakage stopping cement slurry is arranged in the annular groove 4. Make the cooperation inseparabler, intensity is higher, and is favorable to strengthening the stagnant water effect.

The invention has the beneficial effects that: the sealing plug 6 is used as a first water blocking structure, and the water stopping retaining ring 9 is used as a second water blocking structure, so that the structure can be operated with water, the sealing plug 6 is used for blocking the pressure relief holes 2 firstly, the pressure relief holes 2 below the sealing plug 6 are basically isolated, then the residual water above the sealing plug 6 and in the annular groove 4 is cleaned up, and the water stopping effect of the leaking stoppage cement slurry is prevented from being influenced.

The setting up of annular groove 4 makes annular platform form cyclic annular boss 5 to with the cooperation of inlaying grafting each other of stagnant water retaining ring 9 structure, make overall structure stability and intensity better, cooperate the concrete closed bed 8 of leaking stoppage grout and top again, structural integrity is better, the stagnant water effect is better.

Example two

The construction method of the anti-floating pressure relief hole plugging structure of the underground building comprises the following steps:

(1) an annular platform is arranged on the concrete bottom plate layer 1 at the upper part of the pressure relief hole 2;

(2) an annular groove 4 is formed in the annular platform;

(3) the sealing plug 6 is tightly arranged in the pressure relief hole 2;

(4) pressing the water stop retaining ring 9 into the annular groove 4;

(5) concrete is poured above the water stop retaining ring 9 for sealing.

In the step (3), the rubber tube 7 is tightly sleeved on the sealing plug 6, and then is hammered into the pressure relief hole 2, and a hole is reserved.

In the step (3), the water in the hole of the pressure relief hole 2 and the annular groove 4 is cleaned, and then plugging cement slurry is poured above the plugging plug 6 until the annular groove 4 is filled at least.

The concrete in the concrete sealing layer 8 is micro-expansion concrete; the water stop retaining ring 9 is formed by welding steel plates.

The method can be implemented under the condition of water, and the residual water at the opening is cleaned after the sealing plug 6 is hammered in, so that the construction of the plugging cement paste and the water stop retaining ring 9 can be implemented under the anhydrous environment, and the construction quality is effectively ensured.

The method has two water shutoff measures, can effectively resist water pressure, greatly prolongs the water seepage path, and completely avoids the leakage.

The method is effective and reliable, and can be used for plugging seepage of the raft under other conditions except in floating emergency, such as seepage of foundation bolts of construction equipment such as pre-buried tower cranes, construction elevators and the like on the raft.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.