CN113700051B - Anti-floating pressure relief hole plugging structure for underground building and construction method thereof - Google Patents
Anti-floating pressure relief hole plugging structure for underground building and construction method thereof Download PDFInfo
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- CN113700051B CN113700051B CN202111268198.8A CN202111268198A CN113700051B CN 113700051 B CN113700051 B CN 113700051B CN 202111268198 A CN202111268198 A CN 202111268198A CN 113700051 B CN113700051 B CN 113700051B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
- E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/16—Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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Abstract
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.
Description
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.
Claims (3)
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, its characterized in that, pressure release hole upper portion has annular platform, there is an annular groove on the annular platform, annular groove and annular platform set up with one heart, the downthehole cooperation of pressure release sets up the shutoff and blocks up, the shutoff is the pine awl, the outside of shutoff still closely overlaps there is the rubber tube, there is a stagnant water buckle sealing up the top of shutoff, the stagnant water buckle cooperate in the annular groove, there is leaking stoppage grout in the annular groove, the top of stagnant water buckle is the concrete sealing layer.
2. The construction method of the underground construction anti-floating pressure relief hole plugging structure according to claim 1 is characterized by comprising 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) firstly, tightly sleeving a rubber pipe on a plugging plug, and then tightly smashing the plugging plug into a pressure relief hole to leave a hole; cleaning water in the pressure relief hole and the annular groove, pouring plugging cement slurry above the plugging plug until the annular groove is filled at least, and pressing the water stop retaining ring into the annular groove;
(4) and pouring concrete above the water stop retaining ring for sealing.
3. The construction method of the underground building anti-floating pressure relief hole plugging structure according to claim 2, wherein the concrete in the concrete sealing layer is micro-expansion concrete; the water stop retaining ring is formed by welding steel plates.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111268198.8A CN113700051B (en) | 2021-10-29 | 2021-10-29 | Anti-floating pressure relief hole plugging structure for underground building and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111268198.8A CN113700051B (en) | 2021-10-29 | 2021-10-29 | Anti-floating pressure relief hole plugging structure for underground building and construction method thereof |
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| Publication Number | Publication Date |
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| CN113700051A CN113700051A (en) | 2021-11-26 |
| CN113700051B true CN113700051B (en) | 2022-02-22 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204080836U (en) * | 2014-09-10 | 2015-01-07 | 中国建筑第六工程局有限公司 | The fast plugging device of dewatering well in a kind of building basement |
| CN105133628A (en) * | 2015-09-14 | 2015-12-09 | 中国建筑第二工程局有限公司 | Underground garage sump belt pressure leakage stopping structure and method |
| CN106567415A (en) * | 2016-11-04 | 2017-04-19 | 上海中锦建设集团股份有限公司 | Drain sleeve for preventing basement floating upward and use method |
| CN109944461A (en) * | 2019-04-13 | 2019-06-28 | 周登楷 | A kind of skyscraper coupling beam horizontal hole plugging structure and its construction method |
| CN212129150U (en) * | 2020-05-09 | 2020-12-11 | 中铁十七局集团建筑工程有限公司 | Deep basal pit precipitation well block structure |
-
2021
- 2021-10-29 CN CN202111268198.8A patent/CN113700051B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204080836U (en) * | 2014-09-10 | 2015-01-07 | 中国建筑第六工程局有限公司 | The fast plugging device of dewatering well in a kind of building basement |
| CN105133628A (en) * | 2015-09-14 | 2015-12-09 | 中国建筑第二工程局有限公司 | Underground garage sump belt pressure leakage stopping structure and method |
| CN106567415A (en) * | 2016-11-04 | 2017-04-19 | 上海中锦建设集团股份有限公司 | Drain sleeve for preventing basement floating upward and use method |
| CN109944461A (en) * | 2019-04-13 | 2019-06-28 | 周登楷 | A kind of skyscraper coupling beam horizontal hole plugging structure and its construction method |
| CN212129150U (en) * | 2020-05-09 | 2020-12-11 | 中铁十七局集团建筑工程有限公司 | Deep basal pit precipitation well block structure |
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| CN113700051A (en) | 2021-11-26 |
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