CN114991522A - A draw hole pre-buried device in underground continuous wall for existing building underground intercommunication - Google Patents
A draw hole pre-buried device in underground continuous wall for existing building underground intercommunication Download PDFInfo
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- CN114991522A CN114991522A CN202210782659.1A CN202210782659A CN114991522A CN 114991522 A CN114991522 A CN 114991522A CN 202210782659 A CN202210782659 A CN 202210782659A CN 114991522 A CN114991522 A CN 114991522A
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- underground
- continuous wall
- underground continuous
- steel sleeve
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 70
- 239000010959 steel Substances 0.000 claims abstract description 70
- 230000002787 reinforcement Effects 0.000 claims abstract description 43
- 238000004891 communication Methods 0.000 claims abstract description 19
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 239000002689 soil Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 17
- 238000003466 welding Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 15
- 238000011161 development Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 6
- 238000009412 basement excavation Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 206010003549 asthenia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0266—Enlarging
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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
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4114—Elements with sockets
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Abstract
The invention belongs to the field of underground space development, and relates to an underground continuous wall inner lead hole pre-embedding device for underground communication of an existing building. The technical scheme is as follows: a hole leading pre-buried device in underground continuous wall for the underground communication of existing buildings comprises a main steel sleeve and an underground continuous wall main rib connecting reinforcement piece; the main steel sleeve is embedded in the underground continuous wall; the main reinforcement connecting and reinforcing piece of the underground continuous wall comprises a reinforcing reinforcement ring and fixed reinforcements, the reinforcing reinforcement ring is sleeved outside the pipe wall of the main steel sleeve, and the linear fixed reinforcements respectively extend out of the upper end and the lower end of the reinforcing reinforcement ring and are connected with the main reinforcements of the underground continuous wall; a water-stopping steel ring plate is welded on the main steel sleeve; a sealing cover is arranged on the pit facing side of the main steel sleeve; a bottom sealing cover is arranged on the soil facing side of the main steel sleeve; the high-modulus fragile material is filled in the main steel sleeve. The method solves the problem that the main reinforcement of the underground continuous wall is damaged by the hole leading construction, and improves the hole leading construction precision.
Description
Technical Field
The invention belongs to the field of underground space development, and particularly relates to an underground continuous wall inner lead hole pre-embedding device for underground communication of existing buildings.
Background
With the increasing shortage of urban land resources, underground space development becomes an important means for solving the problems of urban land, population, traffic, environment and the like and optimizing urban space structures. For this reason, the development and utilization of underground spaces will have been the focus of urban construction for a considerable period of time. However, while the underground space of a newly-built project is developed to a large area, a deep level and a global situation, the central urban area represented by a historical building protection area, a part of central business areas, residential districts and the like has the prominent problems of insufficient development amount, lack of organic connection and the like of the existing underground space of the building, and the development requirements of economy and cities are increasingly not met.
In order to solve the problem of insufficient underground space in a central urban area, on one hand, a part of newly-increased underground space is newly added through reconstruction and expansion of an existing building, and on the other hand, the existing underground spaces and the existing and newly-built underground spaces are effectively communicated, namely, systems such as subway stations, underground parking lots, underground commercial streets, underground entertainment facilities and other functional buildings, peripheral blocks and the like are connected and communicated through communication channels to form a whole. By means of development of underground spaces between the lower part of an existing building and the building and mutual communication of underground space monomers, the underground spaces are changed from 'points' to 'nets', the development and utilization scale of the underground spaces is enlarged, the underground space structure is changed, the requirements for protecting and updating central urban areas, the requirements for improving regional functions and the urban traffic development requirements can be met, and the improvement of the regional functions of the existing buildings in cities is promoted.
Urban central areas are dense in buildings (structures) and complex in environmental conditions, and underground passages often need to pass through important protected objects such as existing building foundations, urban municipal roads, municipal pipelines and the like in a short distance. The conventional open excavation method is not suitable for or unconditionally implemented due to the limitation of the conditions, and the underground excavation method avoids the problems of ground traffic blockage, environmental damage and removal and modification of municipal pipelines and public facilities caused by excavation and becomes a relatively reasonable choice. In a high-water-level soft soil area, before an underground excavation method is implemented, soil body reinforcement is often required to be carried out firstly to form effective water stop and soil body improvement, the soil body reinforcement is influenced by buildings (structures) on the upper part of a communication passage passing area, ground traffic and the like, the soil body reinforcement construction on the ground above the communication passage is limited by various conditions, and the interference on the ground can be effectively avoided by carrying out the construction of horizontal ultrahigh pressure injection grouting in the built underground space. Before injection grouting construction, guide holes penetrate through an enclosure wall of an underground structure, the diameter of each guide hole is about 200mm generally, and the distance between the guide holes is 700mm to 900mm generally. The two-in-one underground continuous wall is used as a building enclosure in the construction stage of foundation pit engineering and has the purposes of retaining soil and stopping water; and the structure is used as the outer wall of the main basement structure in the permanent use stage of the structure. The longitudinal stress main rib interval of two wall unification underground continuous walls is 150mm, and the mode of adopting back draw hole can unavoidably destroy underground continuous wall main rib, simultaneously because the reinforcing range generally need upwards respectively expand 2m to 3m about the upper and lower on the intercommunication road cross-section basis, causes the draw hole to cause the destruction to permanent wall body main rib. By adopting the rear hole guiding mode, on one hand, the quantity of main ribs damaged by the holes is difficult to accurately quantify, and on the other hand, if the main ribs (particularly the main ribs facing the soil surface) of the partial underground continuous wall are considered to be damaged in the design stage, the reinforcement ratio of the underground wall is obviously increased, which is not economical.
Therefore, the idea of embedding the sleeve in the underground continuous wall during construction is a solution. However, the sleeve has a large diameter and is partially buried deeply, so that the sleeve is likely to shift and deform and is difficult to play a role if concrete pouring of the underground continuous wall is not effectively processed; in addition, the relation between the sleeve and the main reinforcement of the underground continuous wall needs to be processed, so that the main reinforcement of the ground wall cannot be weakened; in addition, in high underground water level areas, leakage paths are prevented from being generated due to the existence of the sleeve, and the safety of a foundation pit is influenced and the waterproof performance of a basement is permanently used.
Disclosure of Invention
In order to solve the technical problems, the invention provides an inner lead hole pre-embedding device for an underground continuous wall for underground communication of an existing building, which solves the problem that main ribs of the underground continuous wall are damaged by lead hole construction and improves the lead hole construction precision.
The technical scheme of the invention is as follows: a hole leading pre-buried device in underground continuous wall for the underground communication of existing buildings comprises a main steel sleeve and an underground continuous wall main rib connecting reinforcement piece; the main steel sleeve is embedded in the underground continuous wall; the main reinforcement connecting and reinforcing piece of the underground continuous wall comprises a reinforcing reinforcement ring and fixed reinforcements, the reinforcing reinforcement ring is sleeved outside the pipe wall of the main steel sleeve, and the linear fixed reinforcements respectively extend out of the upper end and the lower end of the reinforcing reinforcement ring and are connected with the main reinforcements of the underground continuous wall; a water-stopping steel ring plate is welded on the main steel sleeve; a sealing cover is arranged on the pit facing side of the main steel sleeve; a bottom sealing cover is arranged on the soil facing side of the main steel sleeve; the high-modulus fragile material is filled in the main steel sleeve.
Based on the technical characteristics: the reinforcing steel bar ring and the fixed steel bar are formed by welding two sections of hook shapes, the fixed steel bar and one half of the reinforcing steel bar ring form a hook shape, and the left part and the right part are spliced to form the main bar connecting and reinforcing piece of the underground continuous wall.
Based on the technical characteristics: the diameters of the reinforcing steel bar rings and the fixing steel bars are larger than or equal to the diameter of the main ribs of the ground wall.
Based on the technical characteristics: the port of the steel sleeve of the main body facing the pit side is provided with a tooth opening, and the tooth opening and the sealing cover are fixed in a spiral mode.
Based on the technical characteristics: and the middle part of the main steel sleeve and the inner side of the tooth mouth are provided with water stop steel ring plates.
Based on the technical characteristics: the central part of the outer side of the sealing cover is provided with a cover plate guide mark.
The beneficial effects are that: (1) the equipment principle is simple, and the strength loss of the main reinforcement of the underground continuous wall is avoided; (2) the steel bar cage is firmly fixed with the ground wall steel bar cage and is not easy to move; (3) the deformation of the embedded device caused by concrete casting of the underground continuous wall can be avoided; (4) water can be effectively stopped, and a leakage channel is prevented from being formed; (5) can be quickly and reliably connected with the embedded sleeve of the inner lining wall. In the existing engineering, for existing building underground communication, a lining wall is usually arranged on the inner side of an underground continuous wall, the lining wall is constructed in an upward construction stage after a foundation pit is excavated to the bottom, on one hand, a communication channel opening area buried deep water stop structure is arranged between the underground continuous wall and the lining wall, water stop is enhanced during the construction of the communication channel, on the other hand, after the later-stage communication channel structure is formed, the lining wall and the communication channel structure are connected to form a whole, and better stress and waterproof effects are achieved. Because the lining wall in the area outside the opening of the communicating passage is finished before the hole leading construction, the lining wall also needs to embed the sleeve in the structure return construction process, and the embedding stage of the lining wall is different from the embedding stage of the hole leading embedding device in the ground wall.
Drawings
Fig. 1 is a front view of a lead embedding device of the present invention.
Fig. 2 is a side view of the lead embedding device of the present invention. (section A-A of FIG. 1)
Fig. 3 is a top view of the lead embedding device of the present invention.
Fig. 4 is a detailed view of the connecting and reinforcing member for the main reinforcement of the ground wall in the present invention.
Fig. 5 is a pre-burying state diagram of the lead hole pre-burying device of the invention.
Fig. 6 is a diagram showing an excavation exposure state of the lead hole embedding device of the present invention.
A main steel sleeve 1; the main reinforcement of the underground continuous wall is connected with a reinforcing part 2; a water stop steel ring plate 3; a reinforcing steel bar ring 4; fixing the steel bars 5; a tooth mouth 6; a sealing cover 7; a bottom sealing cover 8; a high modulus brittle material 9; an underground diaphragm wall 10; main ground wall ribs 12; a ground wall pit facing surface protection layer 13; an interior lining wall 14; embedding a sleeve 15 in the lining wall; a cover guide 17; the inner diameter d of the sleeve; the outer diameter D of the sleeve.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to limit the present invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not 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. 1 to 4, a hole guiding and embedding device in an underground continuous wall comprises a main steel sleeve 1 and a reinforcing member 2 connected with a main reinforcement of the underground continuous wall. The main body steel sleeve 1 is pre-buried in the underground continuous wall, and the sleeve inner diameter d of the main body steel sleeve 1 is larger than the diameter of the guide hole. The main wall reinforcement connecting and reinforcing piece 2 comprises a reinforcing reinforcement ring 4 and a fixed reinforcement 5; the reinforcing steel bar ring 4 is sleeved outside the pipe wall of the main steel sleeve 1, and the linear fixed steel bars 5 respectively extend out of the upper end and the lower end of the reinforcing steel bar ring 4 and are connected with the main floor wall ribs 12, so that the lap joint length l between the reinforcing steel bar ring and the main floor wall ribs 12 meets the specification requirement. The diameter of the reinforcing steel bar rings 4 and the fixing steel bars 5 is greater than or equal to that of the main ground wall bars 12. As shown in fig. 4, the reinforcing steel bar ring 4 and the fixing steel bar 5 are formed by welding two sections of hook shapes, that is, the fixing steel bar 5 and one half of the reinforcing steel bar ring 4 form a hook shape, and the two sections are spliced left and right to form the main reinforcement connecting reinforcement member 2 of the underground continuous wall.
The steel sleeve 1 of the main body is provided with a tooth mouth 6 at the side facing the pit, the tooth mouth 6 and the sealing cover 7 are fixed in a spiral way, and the central part of the outer side of the sealing cover 7 is provided with a cover plate guide mark 17. The main body steel sleeve 1 is provided with a bottom sealing cover 8 on the soil facing side.
The main steel sleeve 1 is welded with a water stop steel ring plate 3. The middle part of the main steel sleeve 1 and the inner side of the tooth mouth 6 are provided with the water stop steel ring plate 3, the inner diameter of the water stop steel ring plate 3 is equal to the outer diameter D of the sleeve of the main steel sleeve 1, the outer diameter and the thickness of the water stop steel ring plate meet the water stop requirement, and the water stop steel ring plate 3 is in full-welding connection with the main steel sleeve 1.
A bottom cover 8 is arranged on the main steel sleeve 1 and the bottom cover to prevent the inside from becoming a seepage channel.
The high-modulus brittle material 9 is filled into the main steel sleeve 1 through the top opening, on one hand, the high-strength filler ensures that the main steel sleeve 1 cannot deform due to stress during the concrete pouring of the underground continuous wall to influence the hole guiding construction, and on the other hand, the brittle material can be conveniently drilled through by a hole guiding device; and screwing the sealing cover 7 after the high-modulus fragile material 9 is filled.
As shown in fig. 5 and 6, when the reinforcement cages of the underground continuous wall 10 are bound, the foundation wall main reinforcements 12 are disconnected, the reinforcing reinforcement rings 4 and the fixing reinforcements 5 are arranged close to the inner sides of the foundation wall main reinforcements 12, the reinforcing reinforcement rings 4 and the main steel sleeves 1 are connected by full welding, and the fixing reinforcements 5 and the foundation wall main reinforcements 12 are welded.
The steel reinforcement cage of the underground continuous wall 10 is placed to the assigned position, the concrete of the underground continuous wall 10 is poured, and the existence of the water stop steel ring plate 3 ensures that the contact surface of the main steel sleeve 1 and the underground continuous wall 10 cannot become a water seepage channel in the process of excavation of the foundation pit.
After the foundation pit is excavated, the position of the embedded part can be found conveniently due to the existence of the cover plate guide mark 17. And (3) finishing the underground structure, as shown in fig. 6, stripping the ground wall pit-facing surface protective layer 13 at the position of the embedded part before the inner lining wall 14 is poured, screwing the embedded sleeve 15 in the inner lining wall after the sealing cover 7 is unscrewed, binding reinforcing steel bars of the inner lining wall 14, and pouring concrete of the inner lining wall 14. The interior of the lining wall embedded sleeve 15 is hollow, an inner side opening of the lining wall embedded sleeve is exposed, and the hole leading device can enter from the side to penetrate through the lining wall embedded sleeve 15 and the main body steel sleeve 1, so that the lossless hole leading of the main reinforcement of the underground continuous wall is smoothly realized.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides a draw hole pre-buried device in underground continuous wall for existing building underground intercommunication which characterized in that: comprises a main steel sleeve (1) and an underground continuous wall main rib connecting reinforcement (2); the main steel sleeve (1) is embedded in the underground continuous wall; the underground continuous wall main rib connecting and reinforcing piece (2) comprises a reinforcing steel bar ring (4) and fixing steel bars (5), the reinforcing steel bar ring (4) is sleeved outside the pipe wall of the main steel sleeve (1), and the linear fixing steel bars (5) respectively extend out of the upper end and the lower end of the reinforcing steel bar ring (4) and are connected with the ground wall main ribs (12); a water-stop steel ring plate (3) is welded on the main steel sleeve (1); a sealing cover (7) is arranged on the pit facing side of the main steel sleeve (1); a bottom sealing cover (8) is arranged on the soil facing side of the main steel sleeve (1); and the high-modulus fragile material (9) is filled in the main steel sleeve (1).
2. The underground continuous wall inner lead hole embedding device for underground communication of the existing building according to claim 1, characterized in that: the reinforcing steel bar ring (4) and the fixed steel bar (5) are formed by welding two sections of hook shapes, the fixed steel bar (5) and a half of the reinforcing steel bar ring (4) form a hook shape, and the hook shape is spliced left and right to form the underground continuous wall main bar connection reinforcing part (2).
3. The underground continuous wall inner lead hole embedding device for underground communication of the existing building according to claim 1, characterized in that: the diameters of the reinforcing steel bar ring (4) and the fixing steel bar (5) are larger than or equal to the diameter of the main floor wall bar (12).
4. The device of claim 1 for embedding the hole in the underground diaphragm wall for underground communication of the existing building, which is characterized in that: the port of the steel sleeve (1) facing the pit side is provided with a tooth opening (6), and the tooth opening (6) and the sealing cover (7) are fixed in a spiral mode.
5. The underground continuous wall inner lead hole embedding device for underground communication of the existing building according to claim 4, characterized in that: the middle part of the main steel sleeve (1) and the inner side of the tooth mouth (6) are provided with the water stop steel ring plate (3).
6. The underground continuous wall inner lead hole embedding device for underground communication of the existing building according to claim 1, characterized in that: and a cover plate guide mark (17) is arranged at the central part of the outer side of the sealing cover (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210782659.1A CN114991522A (en) | 2022-07-05 | 2022-07-05 | A draw hole pre-buried device in underground continuous wall for existing building underground intercommunication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210782659.1A CN114991522A (en) | 2022-07-05 | 2022-07-05 | A draw hole pre-buried device in underground continuous wall for existing building underground intercommunication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114991522A true CN114991522A (en) | 2022-09-02 |
Family
ID=83019384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210782659.1A Pending CN114991522A (en) | 2022-07-05 | 2022-07-05 | A draw hole pre-buried device in underground continuous wall for existing building underground intercommunication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114991522A (en) |
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2022
- 2022-07-05 CN CN202210782659.1A patent/CN114991522A/en active Pending
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