CN113216253A - Pre-buried construction method for embedding top plate of cover-excavation top-down construction structure into underground diaphragm wall - Google Patents
Pre-buried construction method for embedding top plate of cover-excavation top-down construction structure into underground diaphragm wall Download PDFInfo
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- CN113216253A CN113216253A CN202110520781.7A CN202110520781A CN113216253A CN 113216253 A CN113216253 A CN 113216253A CN 202110520781 A CN202110520781 A CN 202110520781A CN 113216253 A CN113216253 A CN 113216253A
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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 top-down construction structure into a ground connection wall, which comprises the following steps: a bottom plate of a wooden box structure is arranged on a corresponding position of a vertical main rib of the reinforcement cage in a penetrating mode, a square wooden framework device is transversely fixed on the vertical main rib, and the bottom plate is fixedly connected with the square wooden framework device; installing an outer side plate of a wooden box structure on the outer side of the vertical main reinforcement, and connecting and fixing the outer side plate and the square wooden framework device; a top plate of the wooden box structure is arranged at a corresponding position of the vertical main rib in a penetrating way; 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; adjusting the position of a template 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 reinforcements and the vertical main reinforcements to form a reinforcement cage; hoisting the reinforcement cage, constructing an underground diaphragm wall, dismantling the wooden box structure and the square wooden framework device, and constructing a top plate structure.
Description
Technical Field
The invention relates to the technical field of subway station construction by a cover-excavation top-down construction method, in particular to a pre-buried construction method for embedding a top plate of a cover-excavation top-down construction structure into a ground connection wall.
Background
Along with the national development, the subway construction of the ultra-deep cover-excavation reverse construction method is increasingly common in urban central areas or important busy traffic areas, the cover-excavation reverse construction enclosure structure generally adopts a ground connection wall form, the design that a top plate of the cover-excavation reverse construction structure is embedded into the ground connection wall is increasingly common, the concrete chiseling workload of an embedded part is large, the construction time is long, and the safety influence on the structure and the surrounding environment is large.
In the cover excavation reverse-working structure embedding envelope, adopt mechanical big gun head directly to abolish mostly, local adoption artifical electric pick abolishes, too much machinery is unfavorable for robbing worker production, has restricted the operating speed of construction such as earthwork excavation to a great extent, is very big difficult problem to the tight heavy project of task in time limit for a project.
The common mechanical gun head is directly broken, so that the quality of the ground wall structure and the reinforcing steel bar are easily damaged, and the whole engineering quality is not good.
Disclosure of Invention
The invention aims to provide a pre-embedding construction method for embedding a top plate of a cover-excavation reverse-construction structure into an underground continuous wall according to the defects of the prior art, and the problem of chiseling concrete at the part is effectively solved by pre-embedding a closed wooden box structure in advance in the construction process of an underground continuous wall reinforcement cage.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a lid digs pre-buried construction method in reverse construction roof embedding ground is wall even which characterized in that: the pre-buried construction method comprises the following steps:
a. according to the design elevation of the bottom of the top plate structure embedding position, a bottom plate of a wooden box structure is arranged on the corresponding position of a vertical main rib of a reinforcement cage in a penetrating mode, a square wooden framework device is transversely fixed on the vertical main rib, and the bottom plate and the square wooden framework device are fixedly connected;
b. installing an outer side plate of the wooden box structure on the outer side of the vertical main reinforcement, and connecting and fixing the outer side plate and the square wooden framework device; according to the top design elevation of the top plate structure embedding position, penetrating a top plate of the wooden box structure on the corresponding position of the vertical main rib;
c. respectively penetrating a left side plate and a right side plate of the wooden box structure on transverse main reinforcements of the reinforcement cage, so that the left side plate and the right side plate are in contact with the top plate, the bottom plate and the outer side plate, and an inner side plate of the wooden box structure is in contact with the top plate, the bottom plate, the left side plate and the right side plate; adjusting the position of a template of the wooden box structure to enable the template to be tightly attached to the square wood skeleton device, 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 the reinforcement cage;
d. hoisting the reinforcement cage, constructing an underground diaphragm wall, dismantling the wood box structure and the square wood skeleton device, and constructing the top plate structure.
The square wood skeleton device comprises two square rods and a plurality of U-shaped square rods evenly arranged on the two square rods, the square rods are far away from one side of each U-shaped square rod, a plurality of intervals, shapes and sizes are evenly arranged on the side of each square rod along the length direction of the square rod, and the clamping grooves required by installation of the vertical steel bars are formed.
The square wood framework device and the outer side plate of the wooden box structure are fixed through U-shaped buckles and binding wires, and the templates of the wooden box structure are fixed through nails.
The top plate of the wooden box structure is obliquely arranged.
Evenly be equipped with a plurality of zigzag reinforcing bars on the vertical main muscle, it is same zigzag reinforcing bar on the vertical main muscle connects gradually, zigzag reinforcing bar middle part with contained angle size between the vertical main muscle equals wooden case structure roof with contained angle size between the vertical main muscle.
The invention has the advantages that: the problem of chiseling concrete at the position is solved by pre-embedding 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, a closed space is formed by a pre-embedding construction method, and the effects of avoiding chiseling, saving cost and controlling construction period are achieved.
Drawings
FIG. 1 is a rear view of a wooden box structure in the pre-buried construction method of embedding a top plate of a cover-excavation reverse construction structure into a ground connection wall according to the present invention;
FIG. 2 is a front view of a wooden box structure in the pre-buried construction method of embedding the top plate of the cover-excavation reverse construction structure into the underground diaphragm wall according to the present invention;
fig. 3 is a schematic structural view of a square timber framework device in the pre-buried construction method for embedding the top plate of the cover-excavation top-down construction structure into the underground diaphragm wall according to the invention;
FIG. 4 is a schematic view of the connection between a square timber framework device and an outer side plate of a wooden box structure in the pre-buried construction method of embedding a top plate of a covering and excavating reverse construction structure into a ground connection wall according to the present invention;
fig. 5 is an installation schematic diagram of a top plate structure in the pre-burying construction method for embedding the top plate of the cover-excavation reverse construction structure into the underground diaphragm wall.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings to facilitate understanding by those skilled in the art:
as shown in fig. 1-5, the labels 1-9 are respectively shown as: the square wood frame device comprises a square wood frame device 1, U-shaped square rods 1-1, square rods 1-2, clamping grooves 1-3, U-shaped buckles 2, a wood 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, vertical main ribs 4, transverse main ribs 5, Z-shaped reinforcing steel bars 6, an underground diaphragm wall 7, a top plate structure 8 and an embedding position 9.
Example (b): as shown in fig. 1 to 5, the present embodiment relates to an embedded construction method for embedding a top plate of a cover-excavation reverse-construction structure into a ground connection wall, and the embedded construction method comprises the following steps:
a. as shown in fig. 1, fig. 2 and fig. 5, according to the design elevation of the top and the bottom of the embedding position 9 of the top plate structure 8, the mark is made by a marker pen on the vertical main rib 4, the bottom plate of the wooden box structure 3 is firstly penetrated through the corresponding position (mark position) of the vertical main rib 4 of the reinforcement cage for the construction of the underground continuous wall 7, the square wooden framework device 1 with the size of 100mm processed in advance is transversely fixed on the vertical main rib 4, and the bottom plate of the wooden box structure 3 is fixedly connected with the square wooden framework device 1, so that the preliminary fixation among the wooden box structure 3, the square wooden framework device 1 and the vertical main rib 4 is completed.
As shown in fig. 3, the square wood skeleton device 1 comprises two square bars 1-2 and a plurality of uniformly arranged U-shaped square bars 1-1, two ends of the U-shaped square bars 1-1 are respectively arranged on the two square bars 1-2, and a plurality of clamping grooves 1-3 are uniformly arranged on one side of the square bars 1-2 away from the U-shaped square bars 1-1 along the length direction thereof, and the distance, shape and size of the clamping grooves 1-3 all meet the installation requirements of the vertical main ribs 4. In this embodiment, the distance between the U-shaped square bars 1-1 is 0.5 m.
b. As shown in fig. 1, 2 and 4, the outer side plates 3-3 of the wooden box structure 3 are installed on the outer sides of the vertical main ribs 4, the square wooden framework device 1 and the outer side plates 3-3 of the wooden box structure 3 are fixed through the U-shaped buckles 2 and the binding wires, the U-shaped buckles 2 are sleeved on the square rods 1-2 of the square wooden framework device 1, and two ends of the U-shaped buckles 2 are installed on the outer side plates 3-3 of the wooden box structure 3 through thread structures.
According to the design elevation of the top of the embedding 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 mode, wherein the top plate 3-1 of the wooden box structure 3 is arranged in an inclined mode, so that the wooden box structure 3 and the square wood skeleton device 1 can be conveniently and subsequently detached, and the construction of the top plate structure 8 is facilitated.
c. As shown in fig. 1 and 2, a left side plate 3-2 and a right side plate of a wooden box structure 3 are respectively arranged on a transverse main rib 5 of a reinforcement cage for constructing an underground continuous wall 7 in a penetrating way, and the left side plate 3-2 and the right side plate are in contact with a top plate 3-1, a bottom plate and an outer side plate 3-3.
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, and the preliminary assembly of the preliminary wooden box structure 3 is completed. Then, the formworks (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 framework device 1, the formworks 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 fixedly connected to form a reinforcement cage for the underground continuous wall 7. In this embodiment, 3 inner space sizes of wooden case structure satisfy in the requirement of placing of square timber skeleton device 1, and wooden case structure 3 hugs closely on square timber skeleton device 1, and square timber skeleton device 1 can be used to support wooden case structure 3, guarantees its fastness, makes it difficult emergence warp.
In addition, as shown in fig. 1, a plurality of zigzag reinforcing steel bars 6 are uniformly arranged on the vertical main reinforcing steel bars 4, the zigzag reinforcing steel bars 6 on the same vertical main reinforcing steel bar 4 are sequentially connected, and the zigzag reinforcing steel bars 6 connect the vertical main reinforcing steel bar 4 with the wooden box structure 3 arranged on one side of the reinforcement cage with the vertical main reinforcing steel bar 4 without the wooden box structure 3 arranged on the other side of the reinforcement cage, so as to reinforce the reinforcement cage. In addition, the size of an included angle between the middle part of the Z-shaped reinforcing steel bar 6 and the vertical main rib 4 is equal to the size of an included angle between the top plate 3-1 of the wooden box structure 3 and the vertical main rib 4. The middle of the Z-shaped steel bar 6 arranged near the top plate 3-1 of the wooden box structure 3 is parallel to and close to the top plate 3-1, and the Z-shaped steel bar can play a role in limiting and reinforcing the top plate 3-1; the two connected Z-shaped steel bars 6 arranged at the wooden box structure 3 can also play a role in limiting and reinforcing the inner side plates 3-4 of the wooden box structure 3, namely the Z-shaped steel bars 6 can not only strengthen the rigidity of the steel reinforcement cage, but also play a role in limiting and reinforcing the wooden box structure 3.
d. Hoisting the reinforcement cage, constructing the underground diaphragm wall 7, dismantling the wooden box structure 3 and the square wooden framework device 1, and constructing the top plate structure 8.
Although the conception and the embodiments of the present invention have been described in detail with reference to the drawings, those skilled in the art will recognize that various changes and modifications can be made therein without departing from the scope of the appended claims, and therefore, they are not to be considered repeated herein.
Claims (5)
1. The utility model provides a lid digs pre-buried construction method in reverse construction roof embedding ground is wall even which characterized in that: the pre-buried construction method comprises the following steps:
a. according to the design elevation of the bottom of the top plate structure embedding position, a bottom plate of a wooden box structure is arranged on the corresponding position of a vertical main rib of a reinforcement cage in a penetrating mode, a square wooden framework device is transversely fixed on the vertical main rib, and the bottom plate and the square wooden framework device are fixedly connected;
b. installing an outer side plate of the wooden box structure on the outer side of the vertical main reinforcement, and connecting and fixing the outer side plate and the square wooden framework device; according to the top design elevation of the top plate structure embedding position, penetrating a top plate of the wooden box structure on the corresponding position of the vertical main rib;
c. respectively penetrating a left side plate and a right side plate of the wooden box structure on transverse main reinforcements of the reinforcement cage, so that the left side plate and the right side plate are in contact with the top plate, the bottom plate and the outer side plate, and an inner side plate of the wooden box structure is in contact with the top plate, the bottom plate, the left side plate and the right side plate; adjusting the position of a template of the wooden box structure to enable the template to be tightly attached to the square wood skeleton device, 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 the reinforcement cage;
d. hoisting the reinforcement cage, constructing an underground diaphragm wall, dismantling the wood box structure and the square wood skeleton 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 diaphragm wall according to claim 1, is characterized in that: the square wood skeleton device comprises two square rods and a plurality of U-shaped square rods evenly arranged on the two square rods, the square rods are far away from one side of each U-shaped square rod, a plurality of intervals, shapes and sizes are evenly arranged on the side of each square rod along the length direction of the square rod, and the clamping grooves required by installation of the vertical steel bars are formed.
3. The pre-buried construction method for embedding the top plate of the cover-excavation reverse-construction structure into the underground diaphragm wall according to claim 1, is characterized in that: the square wood framework device and the outer side plate of the wooden box structure are fixed through U-shaped buckles and binding wires, and the templates of the wooden box structure are fixed through nails.
4. The pre-buried construction method for embedding the top plate of the cover-excavation reverse-construction structure into the underground diaphragm wall according to claim 1, is characterized in that: the top plate of the wooden box structure is obliquely arranged.
5. The pre-buried construction method for embedding the top plate of the cover-excavation reverse-construction structure into the underground diaphragm wall as claimed in claim 4, wherein: evenly be equipped with a plurality of zigzag reinforcing bars on the vertical main muscle, it is same zigzag reinforcing bar on the vertical main muscle connects gradually, zigzag reinforcing bar middle part with contained angle size between the vertical main muscle equals wooden case structure roof with contained angle size between the vertical main muscle.
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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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| Application Number | Priority Date | Filing Date | Title |
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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 true CN113216253A (en) | 2021-08-06 |
| CN113216253B CN113216253B (en) | 2023-05-16 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006193941A (en) * | 2005-01-12 | 2006-07-27 | Toda Constr Co Ltd | Construction method for building using diaphragm wall as structural skeleton and cage used for the construction method |
| CN104088295A (en) * | 2014-06-12 | 2014-10-08 | 广州市市政工程设计研究院 | Embedded connection structure of enclosure wall and medium plate for cover and excavation top-down method as well as construction method of embedded connection structure |
| 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 |
| 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 |
| CN109853522A (en) * | 2019-01-11 | 2019-06-07 | 广州地铁设计研究院股份有限公司 | A kind of diaphram wall and waist rail and support connecting node and its construction method |
| 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 |
-
2021
- 2021-05-13 CN CN202110520781.7A patent/CN113216253B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006193941A (en) * | 2005-01-12 | 2006-07-27 | Toda Constr Co Ltd | Construction method for building using diaphragm wall as structural skeleton and cage used for the construction method |
| CN104088295A (en) * | 2014-06-12 | 2014-10-08 | 广州市市政工程设计研究院 | Embedded connection structure of enclosure wall and medium plate for cover and excavation top-down method as well as construction method of embedded connection structure |
| 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 |
| 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 |
| CN109853522A (en) * | 2019-01-11 | 2019-06-07 | 广州地铁设计研究院股份有限公司 | A kind of diaphram wall and waist rail and support connecting node and its construction method |
| 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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