CN113216253B - Pre-buried construction method for top plate embedded in underground continuous wall of cover-excavation reverse construction structure - Google Patents
Pre-buried construction method for top plate embedded in underground continuous wall of cover-excavation reverse construction structure Download PDFInfo
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- CN113216253B CN113216253B CN202110520781.7A CN202110520781A CN113216253B CN 113216253 B CN113216253 B CN 113216253B CN 202110520781 A CN202110520781 A CN 202110520781A CN 113216253 B CN113216253 B CN 113216253B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
- E02D5/187—Bulkheads or similar walls made solely of concrete in situ the bulkheads or walls being made continuously, e.g. excavating and constructing bulkheads or walls in the same process, without joints
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Abstract
The invention discloses a pre-buried construction method for embedding a top plate of a cover-excavation reverse construction structure into a diaphragm wall, which comprises the following steps: the method comprises the steps that a bottom plate of a wooden box structure is arranged on a corresponding position of a vertical main rib of a reinforcement cage in a penetrating mode, a square wood framework device is transversely fixed on the vertical main rib, and the bottom plate is fixedly connected with the square wood framework device; an outer side plate of a wood box structure is arranged outside the vertical main rib, and the outer side plate is fixedly connected with the square wood framework device; penetrating a top plate of the wooden box structure into a corresponding position of the vertical main rib; the left side plate and the right side plate of the wooden box structure are respectively penetrated on the transverse main ribs of the reinforcement cage; adjusting the positions of templates of the wooden box structure, sequentially fixing the templates of the wooden box structure to form a closed wooden box structure, and connecting and fixing the transverse main ribs and the vertical main ribs to form a reinforcement cage; and hoisting the reinforcement cage, constructing an underground continuous wall, removing the wooden box structure and the square wooden skeleton device, and constructing a top plate structure.
Description
Technical Field
The invention relates to the technical field of cover-excavation reverse construction method subway station construction, in particular to a pre-buried construction method for embedding a top plate of a cover-excavation reverse construction structure into a diaphragm wall.
Background
With the national development, the construction of the ultra-deep cover-excavation reverse construction method subway in the urban central area or the important heavy traffic zone is more common, the cover-excavation reverse construction enclosure structure is generally in the form of a diaphragm wall, the design of embedding the top plate of the cover-excavation reverse construction structure into the diaphragm wall is more common, the chiseling work load of concrete at the embedded part is large, the construction time is long, and the safety influence on the structure and the surrounding environment is large.
The cover-excavation reverse-working structure is embedded into the enclosure structure, the mechanical gun head is adopted for direct breaking, the manual electric pick is adopted for partial breaking, excessive machines are unfavorable for robbing production, the working speed of construction such as earth excavation is greatly limited, and the problem of heavy project of construction period is solved.
The general mechanical gun head is directly broken, so that the structural quality of the underground continuous wall is easily damaged, the reinforcing steel bars are easily damaged, and the whole engineering quality is unfavorable.
Disclosure of Invention
The invention aims to provide a pre-buried construction method for embedding a top plate of a cover-excavation reverse construction structure into a diaphragm wall according to the defects of the prior art, and the problem of chiseling concrete at the position is effectively solved by pre-burying a closed wooden box structure in advance in the construction process of a diaphragm wall reinforcement cage.
The invention is realized by the following technical scheme:
a pre-buried construction method for embedding a top plate of a cover-excavation reverse-acting structure into a diaphragm wall is characterized by comprising the following steps: the pre-buried construction method comprises the following steps:
a. according to the design elevation of the embedded position bottom of the top plate structure, a bottom plate of the wooden box structure is arranged on the corresponding position of the vertical main rib of the reinforcement cage in a penetrating manner, a square wood framework device is transversely fixed on the vertical main rib, and the bottom plate is fixedly connected with the square wood framework device;
b. an outer side plate of the wood box structure is arranged outside the vertical main rib, and the outer side plate is fixedly connected with the square wood skeleton device; penetrating the top plate of the wooden box structure on the corresponding position of the vertical main rib according to the designed elevation of the top of the embedded position of the top plate structure;
c. respectively penetrating a left side plate and a right side plate of the wooden box structure on a transverse main rib of the reinforcement cage, enabling the left side plate and the right side plate to be in contact with the top plate, the bottom plate and the outer side plate, and enabling an inner side plate of the wooden box structure to be in contact with the top plate, the bottom plate, the left side plate and the right side plate; adjusting the position of the template of the wooden box structure to enable the template to be clung to the square wood framework device, sequentially fixing the templates of the wooden box structure to form a closed wooden box structure, and enabling the transverse main ribs and the vertical main ribs to be fixedly connected to form the reinforcement cage;
d. hoisting the reinforcement cage, constructing an underground continuous wall, removing the wooden box structure and the square wood framework device, and constructing the top plate structure.
The square timber frame device comprises two square rods and a plurality of U-shaped square rods which are uniformly arranged on the two square rods, wherein a plurality of clamping grooves with the spacing, the shape and the size which are all satisfied with the installation requirement of the vertical reinforcing steel bars are uniformly arranged on one side, far away from the U-shaped square rods, of the square rods along the length direction of the square rods.
The square wood skeleton device is fixed with the outer side plate of the wooden box structure through U-shaped buckles and binding wires, and the templates of the wooden box structure are fixed through nails.
The wooden box structure top plate is obliquely arranged.
The novel wood box structure is characterized in that a plurality of Z-shaped steel bars are uniformly arranged on the vertical main bars, the same Z-shaped steel bars on the vertical main bars are sequentially connected, and the size of an included angle between the middle part of each Z-shaped steel bar and the vertical main bar is equal to that of an included angle between the top plate of the wood box structure and the vertical main bar.
The invention has the advantages that: the problem of chiseling concrete at the part is solved by pre-burying the closed wooden box structure in advance in the construction process of the underground wall-connected reinforcement cage, the concrete cannot enter the wooden box structure, and a closed space is formed by a pre-burying construction method, so that the effects of avoiding chiseling, saving cost and controlling construction period are achieved.
Drawings
FIG. 1 is a rear view of a wooden case structure in a pre-buried construction method of a top plate of a top-down construction structure embedded in a diaphragm wall of the present invention;
FIG. 2 is a front view of a wooden box structure in the pre-buried construction method of the top plate of the top-down construction structure embedded in the underground continuous wall;
FIG. 3 is a schematic structural view of a square timber frame device in the pre-buried construction method of the top plate of the cover-excavation reverse construction structure embedded in the underground continuous wall;
FIG. 4 is a schematic diagram showing the connection between a square timber frame device and an outer side plate of a wooden case structure in the pre-buried construction method of embedding a top plate of a cover-excavation reverse construction structure into a diaphragm wall;
fig. 5 is a schematic installation view of a roof structure in the pre-buried construction method of embedding the roof of the top-down construction structure into the underground continuous wall.
Detailed Description
The features of the invention and other related features are described in further detail below by way of example in conjunction with the following figures to facilitate understanding by those skilled in the art:
as shown in fig. 1-5, the labels 1-9 are shown as: the square timber frame device 1, U-shaped square rods 1-1, square rods 1-2, clamping grooves 1-3, U-shaped buckles 2, a wooden box structure 3, a top plate 3-1, a left side plate 3-2, an outer side plate 3-3, an inner side plate 3-4, a vertical main rib 4, a transverse main rib 5, Z-shaped reinforcing steel bars 6, an underground continuous wall 7, a top plate structure 8 and an embedded position 9.
Examples: as shown in fig. 1-5, the present embodiment relates to a pre-buried construction method for embedding a top plate of a cover-excavation reverse construction structure into a diaphragm wall, which comprises the following steps:
a. as shown in fig. 1, fig. 2 and fig. 5, according to the design elevation of the top and bottom of the embedded position 9 of the top plate structure 8, marks are made on the vertical main ribs 4 by using marking pens, firstly, the bottom plate of the wooden box structure 3 is penetrated on the corresponding position (marked position) of the vertical main ribs 4 of the reinforcement cage for constructing the underground diaphragm wall 7, the square timber frame device 1 with the size 100mm processed in advance is transversely fixed on the vertical main ribs 4, and the bottom plate of the wooden box structure 3 is fixedly connected with the square timber frame device 1, so that the preliminary fixing among the wooden box structure 3, the square timber frame device 1 and the vertical main ribs 4 is completed.
As shown in fig. 3, the square timber frame device 1 comprises two square rods 1-2 and a plurality of uniformly arranged U-shaped square rods 1-1, wherein two ends of the U-shaped square rods 1-1 are respectively arranged on the two square rods 1-2, a plurality of clamping grooves 1-3 are uniformly formed in one side, far away from the U-shaped square rods 1-1, of the square rods 1-2 along the length direction of the square rods, and the distance, the shape and the size of the clamping grooves 1-3 are all satisfied with the installation requirement of the vertical main rib 4. In this embodiment, the distance between the U-shaped square bars 1-1 is 0.5m.
b. As shown in fig. 1, 2 and 4, an outer side plate 3-3 of a wooden box structure 3 is arranged outside a vertical main rib 4, a square wooden frame device 1 and the outer side plate 3-3 of the wooden box structure 3 are fixed through a U-shaped buckle 2 and binding wires, the U-shaped buckle 2 is sleeved on a square rod 1-2 of the square wooden frame device 1, and two ends of the U-shaped buckle 2 are arranged on the outer side plate 3-3 of the wooden box structure 3 through a thread structure.
According to the design elevation at the top of the embedded position 9 of the top plate structure 8, the top plate 3-1 of the wooden box structure 3 is arranged on the corresponding position (marked position) of the vertical main rib 4 in a penetrating way, wherein the top plate 3-1 of the wooden box structure 3 is obliquely arranged, so that the wooden box structure 3 and the square wood skeleton device 1 are convenient to disassemble subsequently, and the construction of the top plate structure 8 is facilitated.
c. As shown in fig. 1 and 2, the left side plate 3-2 and the right side plate of the wooden box structure 3 are respectively penetrated on the transverse main rib 5 of the reinforcement cage for constructing the underground diaphragm wall 7, and the left side plate 3-2 and the right side plate are contacted with the top plate 3-1, the bottom plate and the outer side plate 3-3.
And then the inner side plate 3-4 of the wooden box structure 3 is contacted with the top plate 3-1, the bottom plate, the left side plate 3-2 and the right side plate, so that the preliminary assembly of the preliminary wooden box structure 3 is completed. And then the templates (namely the top plate 3-1, the bottom plate, the left side plate 3-2, the right side plate, the outer side plate 3-3 and the inner side plate 3-4) of the wooden box structure 3 are tightly connected with the square wooden skeleton device 1, the templates of the wooden box structure 3 are sequentially fixed together by nails to form a closed wooden box structure 3, and the transverse main ribs 5 and the vertical main ribs 4 are connected and fixed to form a reinforcement cage for the underground diaphragm wall 7. In this embodiment, the size of the inner space of the wooden case structure 3 meets the placing requirement of the square wooden frame device 1, the wooden case structure 3 is tightly attached to the square wooden frame device 1, and the square wooden frame device 1 can be used for supporting the wooden case structure 3, so that the firmness of the wooden case structure 3 is ensured, and the wooden case structure is not easy to deform.
In addition, as shown in fig. 1, a plurality of zigzag reinforcing bars 6 are uniformly arranged on the vertical main bars 4, the zigzag reinforcing bars 6 on the same vertical main bar 4 are sequentially connected, and the zigzag reinforcing bars 6 connect the vertical main bars 4, on one side of the reinforcement cage, of which the wooden box structure 3 is installed with the vertical main bars 4, on the other side of the reinforcement cage, of which the wooden box structure 3 is not installed, together for reinforcing the reinforcement cage. In addition, the included angle between the middle part of the Z-shaped steel bar 6 and the vertical main steel bar 4 is equal to the included angle between the top plate 3-1 of the wooden box structure 3 and the vertical main steel bar 4. The middle parts of the Z-shaped steel bars 6 which are arranged near the top plate 3-1 of the wooden box structure 3 are parallel and close to the top plate 3-1, so that the top plate 3-1 can be limited and reinforced; the two connected Z-shaped steel bars 6 arranged at the wood box structure 3 can also play a role in limiting and reinforcing the inner side plate 3-4 of the wood box structure 3, namely, the Z-shaped steel bars 6 can not only strengthen the rigidity of a steel bar cage, but also play a role in limiting and reinforcing the wood box structure 3.
d. Lifting the reinforcement cage, constructing the underground diaphragm wall 7, removing the wooden box structure 3 and the square wood skeleton device 1, and constructing the top plate structure 8.
Although the foregoing embodiments have been described in some detail with reference to the accompanying drawings, it will be appreciated by those skilled in the art that various modifications and changes may be made thereto without departing from the scope of the invention as defined in the appended claims, and thus are not repeated herein.
Claims (4)
1. A pre-buried construction method for embedding a top plate of a cover-excavation reverse-acting structure into a diaphragm wall is characterized by comprising the following steps: the pre-buried construction method comprises the following steps:
a. according to the design elevation of the embedded position bottom of the top plate structure, a bottom plate of the wooden box structure is arranged on the corresponding position of the vertical main rib of the reinforcement cage in a penetrating manner, a square wood framework device is transversely fixed on the vertical main rib, and the bottom plate is fixedly connected with the square wood framework device; the square wood skeleton device comprises two square rods and a plurality of U-shaped square rods which are uniformly arranged on the two square rods, wherein a plurality of clamping grooves with intervals, shapes and sizes which meet the installation requirement of the vertical main ribs are uniformly formed in one side, far away from the U-shaped square rods, of each square rod along the length direction of each square rod;
b. an outer side plate of the wood box structure is arranged outside the vertical main rib, and the outer side plate is fixedly connected with the square wood skeleton device; penetrating the top plate of the wooden box structure on the corresponding position of the vertical main rib according to the designed elevation of the top of the embedded position of the top plate structure;
c. respectively penetrating a left side plate and a right side plate of the wooden box structure on a transverse main rib of the reinforcement cage, enabling the left side plate and the right side plate to be in contact with the top plate, the bottom plate and the outer side plate, and enabling an inner side plate of the wooden box structure to be in contact with the top plate, the bottom plate, the left side plate and the right side plate; adjusting the position of the template of the wooden box structure to enable the template to be clung to the square wood framework device, sequentially fixing the templates of the wooden box structure to form a closed wooden box structure, and enabling the transverse main ribs and the vertical main ribs to be fixedly connected to form the reinforcement cage;
d. hoisting the reinforcement cage, constructing an underground continuous wall, removing the wooden box structure and the square wood framework device, and constructing the top plate structure.
2. The pre-buried construction method for embedding the top plate of the cover-excavation reverse construction structure into the underground continuous wall as claimed in claim 1, wherein the construction method comprises the following steps: the square wood skeleton device is fixed with the outer side plate of the wooden box structure through U-shaped buckles and binding wires, and the templates of the wooden box structure are fixed through nails.
3. The pre-buried construction method for embedding the top plate of the cover-excavation reverse construction structure into the underground continuous wall as claimed in claim 1, wherein the construction method comprises the following steps: the wooden box structure top plate is obliquely arranged.
4. The embedded construction method for embedding the top plate of the cover-excavation reverse construction structure into the underground continuous wall as claimed in claim 3, wherein the embedded construction method comprises the following steps: the novel wood box structure is characterized in that a plurality of Z-shaped steel bars are uniformly arranged on the vertical main bars, the same Z-shaped steel bars on the vertical main bars are sequentially connected, and the size of an included angle between the middle part of each Z-shaped steel bar and the vertical main bar is equal to that of an included angle between the top plate of the wood box structure and the vertical main bar.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110520781.7A CN113216253B (en) | 2021-05-13 | 2021-05-13 | Pre-buried construction method for top plate embedded in underground continuous wall of cover-excavation reverse construction structure |
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| CN202110520781.7A CN113216253B (en) | 2021-05-13 | 2021-05-13 | Pre-buried construction method for top plate embedded in underground continuous wall of cover-excavation reverse construction structure |
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| CN113216253A CN113216253A (en) | 2021-08-06 |
| CN113216253B true CN113216253B (en) | 2023-05-16 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203939046U (en) * | 2014-06-12 | 2014-11-12 | 广州市市政工程设计研究院 | Lid digs the embedded connecting structure of enclosure wall and middle plate in contrary work |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4235618B2 (en) * | 2005-01-12 | 2009-03-11 | 戸田建設株式会社 | Building construction method using underground continuous wall as structural frame and reinforcing bar used for this |
| CN104088295B (en) * | 2014-06-12 | 2016-04-27 | 广州市市政工程设计研究总院 | The embedded connecting structure of enclosure wall and middle plate and construction method thereof in covered back-digging |
| CN208121810U (en) * | 2018-04-03 | 2018-11-20 | 北京市市政工程设计研究总院有限公司 | A kind of enclosure wall is inverse to make node structure at top plate |
| CN211898543U (en) * | 2019-12-23 | 2020-11-10 | 中铁第一勘察设计院集团有限公司 | Anti-floating system for connecting subway station structure and underground diaphragm wall by using shear steel bars |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203939046U (en) * | 2014-06-12 | 2014-11-12 | 广州市市政工程设计研究院 | Lid digs the embedded connecting structure of enclosure wall and middle plate in contrary work |
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