CN112227347A - Underground continuous wall and construction method thereof - Google Patents
Underground continuous wall and construction method thereof Download PDFInfo
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- CN112227347A CN112227347A CN202011038969.XA CN202011038969A CN112227347A CN 112227347 A CN112227347 A CN 112227347A CN 202011038969 A CN202011038969 A CN 202011038969A CN 112227347 A CN112227347 A CN 112227347A
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- mounting blocks
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- continuous wall
- bars
- underground continuous
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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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention belongs to the technical field of underground space construction, and particularly relates to an underground continuous wall and a construction method thereof, wherein the construction method of the underground continuous wall comprises the following steps of fixing a plurality of mounting blocks on the outer side of a reinforcement cage in the thickness direction; iron sheets are arranged on the outer sides of the mounting blocks; fixing reinforcing steel bars on the outer side of the iron sheet, wherein the fixing positions of the reinforcing steel bars are opposite to the at least two mounting blocks along the thickness direction of the iron sheet; hoisting a reinforcement cage into a foundation trench of the underground continuous wall; and pouring concrete to complete subsequent construction. An underground continuous wall is manufactured by the construction method of the underground continuous wall. The method is simple to operate, can effectively prevent bulging and an excessively thick concrete protective layer caused by concrete pouring, can control the thickness of the underground continuous wall protective layer, and passes field construction verification.
Description
Technical Field
The invention relates to the technical field of underground space construction, in particular to an underground diaphragm wall and a construction method thereof.
Background
The underground continuous wall is used as a waterproof enclosure structure which can protect the surrounding environment strongly, the underground continuous wall is widely used in the central zone of a soft soil area, the construction of the underground continuous wall is carried out underground or in slurry, the process is not visual, in the pouring process of concrete of the underground continuous wall, the thickness of a protective layer of the underground continuous wall is not easy to control and is easy to form bulges, great troubles are caused to the subsequent construction of the underground continuous wall, and the serious quality problem can be caused in the later period due to improper treatment.
Disclosure of Invention
The invention aims to provide an underground continuous wall and a construction method thereof, wherein the method is simple to operate, can effectively prevent bulges and over-thick concrete protective layers caused by concrete pouring, and can control the thickness of the underground continuous wall protective layers.
In order to achieve the purpose, the invention adopts the following technical scheme:
a construction method of an underground diaphragm wall comprises the following steps:
s1, fixing a plurality of mounting blocks on the outer side of the reinforcement cage in the thickness direction;
s2, iron sheets are arranged on the outer sides of the mounting blocks;
s3, fixing reinforcing steel bars on the outer side of the iron sheet, wherein the fixing positions of the reinforcing steel bars are opposite to the at least two mounting blocks along the thickness direction of the iron sheet;
s4, hoisting the reinforcement cage into a foundation trench of the underground continuous wall;
and S5, pouring concrete.
Furthermore, the installation blocks are arranged outside the reinforcement cage in an array mode and are provided with multiple columns and multiple rows, the installation blocks are vertically arranged in each column, the distance range between every two adjacent installation blocks is 2.5m-3.5m, the installation blocks are horizontally arranged in each row, and the distance range between every two adjacent installation blocks is 0.5m-1.5 m.
Furthermore, the iron sheet is provided with a plurality of iron sheets, the vertical size of each iron sheet is equal to the distance between two vertically adjacent mounting blocks, the horizontal size of each iron sheet is equal to the distance between two horizontally adjacent mounting blocks, and four corners of each iron sheet are fixedly connected to the four mounting blocks respectively.
Furthermore, the reinforcing steel bars comprise a plurality of vertical steel bars and horizontal steel bars, the vertical steel bars extend along the vertical direction, and the horizontal steel bars extend along the horizontal direction;
along the horizontal direction, a plurality of vertical steel bars are parallel to each other and arranged at intervals, and the distance between every two adjacent vertical steel bars is equal to the distance between every two horizontally adjacent mounting blocks; along vertical direction, many horizontal reinforcing bars are parallel to each other and the interval sets up, and the interval between two adjacent horizontal reinforcing bars equals with the interval of two vertical adjacent installation pieces.
Furthermore, the plurality of mounting blocks of each row are over against a vertical reinforcing steel bar, the plurality of mounting blocks of each row are over against a plurality of horizontal reinforcing steel bars, and each horizontal reinforcing steel bar is over against two mounting blocks.
Further, the distance between two adjacent horizontal steel bars on the same straight line in the horizontal direction is equal to the distance between two horizontally adjacent mounting blocks.
Furthermore, an installation block is arranged between two adjacent horizontal steel bars on the same straight line in the horizontal direction at intervals.
Furthermore, installation blocks, iron sheets and reinforcing steel bars are arranged on two opposite sides of the steel reinforcement cage in the thickness direction.
Furthermore, a groove is formed in the mounting block, and the mounting block is fixed to the reinforcement cage through the groove.
An underground continuous wall is manufactured by the construction method of the underground continuous wall.
The invention has the beneficial effects that: through add welding installation piece and iron sheet on steel reinforcement cage in proper order, it has the one deck iron sheet to make the parcel on the steel reinforcement cage, through the iron sheet restraint, prevent to cause the protective layer of swell and too thick underground continuous wall when concreting, and simultaneously, for the rigidity of iron sheet when guaranteeing concreting, weld the reinforcement reinforcing bar outside the iron sheet, the fixed position of reinforcement reinforcing bar is just right with two piece at least installation pieces, after reinforcing bar welds and accomplishes, hang this steel reinforcement cage to the foundation ditch inslot of underground continuous wall, concreting, accomplish follow-up construction. The method is simple to operate, can effectively control the thickness of the protective layer of the underground continuous wall and prevent the ground wall from bulging, and passes the field construction verification.
Drawings
FIG. 1 is a schematic view of an embodiment of the present invention illustrating the placement of reinforcing bars;
FIG. 2 is a top view of an embodiment of the present invention illustrating the placement of reinforcing bars;
fig. 3 is a schematic view of the connection between the mounting block and the reinforcement cage according to the embodiment of the present invention.
In the figure:
1. a reinforcement cage; 2. mounting blocks; 3. iron sheet; 4. reinforcing steel bars; 41. vertical reinforcing steel bars; 42. and (7) horizontal reinforcing steel bars.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar parts throughout or parts having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but with another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 1 to 3, the invention provides a construction method of an underground continuous wall, which is mainly improved when a reinforcement cage 1 is manufactured, and comprises the following steps:
and S1, fixing a plurality of mounting blocks 2 outside the reinforcement cage 1.
In the step, after the reinforcement cage 1 is built, the installation block 2 is welded on the outer side of the reinforcement cage 1, the thickness of the installation block 2 is equal to that of a pre-designed protective layer of the underground continuous wall, and the thickness of the installation block 2 is not more than 45 mm.
And S2, mounting iron sheets 3 on the outer sides of the mounting blocks 2.
In this step, iron sheet 3 welded fastening is in the outside of installation piece 2, and installation piece 2 presss from both sides and locates between steel reinforcement cage 1 and iron sheet 3, through iron sheet 3's restraint, when concreting, can effectual control underground continuous wall's protective layer thickness, also can prevent the bulge phenomenon that the in-process of pouring caused simultaneously.
S3, fixing reinforcing steel bars 4 on the outer side of the iron sheet 3, wherein the fixing positions of the reinforcing steel bars 4 are opposite to the at least two mounting blocks 2 along the thickness direction of the iron sheet 3.
In this step, in order to guarantee to pour the rigidity of in-process iron sheet 3, and then the protective layer thickness of effective control underground continuous wall and prevent the bulge, need to strengthen reinforcing bar 4 at the outside welded fastening of iron sheet 3, the welded fastening position of reinforcing bar 4 is just right with the welded fastening of the inboard installation piece 2 of iron sheet 3, promptly: the two ends of the reinforcing steel bar 4 are opposite to the welding positions of the mounting blocks 2 one by one, and the reinforcing steel bar 4 can also pass through the welding positions of the mounting blocks 2.
And S4, hoisting the reinforcement cage 1 into the foundation trench of the underground continuous wall.
In this step, the reinforcement cage 1 provided with the installation blocks 2, the iron sheet 3 and the reinforcing steel bars 4 is hoisted into the foundation trench of the previously dug underground diaphragm wall.
And S5, pouring concrete.
Through the steps, the underground continuous wall is finally formed.
Specifically, a plurality of installation blocks 2 are arranged outside the reinforcement cage 1 in an array manner, and are provided with a plurality of columns and a plurality of rows, wherein in each column, the installation blocks 2 are vertically arranged, the distance range between two adjacent installation blocks 2 is 2.5m-3.5m, in each row, the installation blocks 2 are horizontally arranged, and the distance range between two adjacent installation blocks 2 is 0.5m-1.5 m. The installation blocks 2 are uniformly distributed on the reinforcement cage 1 along the horizontal direction and the vertical direction respectively, the horizontal distance is one numerical value of 0.5m-1.5m, the vertical distance is one numerical value of 2.5m-3.5m, and the horizontal distance and the vertical distance are kept unchanged after being selected. In the embodiment, as shown in fig. 1, considering that the size of the reinforcement cage 1 is generally 3m or 6m, the horizontal distance between the mounting blocks 2 and the mounting blocks 2 is set to 1m, and the vertical distance is set to 3m, so that the mounting blocks 2 can be uniformly distributed on the outer side of the reinforcement cage 1.
More specifically, iron sheet 3 is provided with many, and iron sheet 3's vertical dimension equals with the interval of two vertical adjacent installation piece 2, and iron sheet 3's horizontal dimension equals with the interval of two horizontal adjacent installation piece 2, and every iron sheet 3's four corners links firmly respectively on four installation piece 2. In the present embodiment, as shown in fig. 1, the vertical and horizontal dimensions of the iron sheet 3 are related to the spacing of the mounting blocks 2, namely: vertical dimension and horizontal dimension of iron sheet 3 and the vertical interval and the horizontal interval of four adjacent rectangle distribution's installation piece 2 equal, and the four corners of iron sheet 3 welds respectively on these four adjacent rectangle distribution's that is installation piece 2, makes the 1 outside of steel reinforcement cage wrapped up by many iron sheets 3.
Specifically, the reinforcing steel bar 4 includes a plurality of vertical steel bars 41 and horizontal steel bars 42, the vertical steel bars 41 extend in the vertical direction, and the horizontal steel bars 42 extend in the horizontal direction; along the horizontal direction, a plurality of vertical steel bars 41 are parallel to each other and arranged at intervals, and the distance between every two adjacent vertical steel bars 41 is equal to the distance between every two horizontally adjacent mounting blocks 2; along vertical direction, many horizontal reinforcing bars 42 are parallel to each other and the interval sets up, and the interval between two adjacent horizontal reinforcing bars 42 equals with the interval of two vertical adjacent installation pieces 2.
In the present embodiment, as shown in fig. 1, the vertical bars 41 and the horizontal bars 42 are vertically disposed, and the distance between the vertical bars 41 and the horizontal bars 42 is related to the distance between two adjacent mounting blocks 2. The horizontal interval of two adjacent vertical reinforcing bars 41 in this embodiment is 1m, and the vertical interval of two adjacent horizontal reinforcing bars 42 is 3m, and many vertical reinforcing bars 41 extend along the vertical direction, and many horizontal reinforcing bars 42 extend along the horizontal direction.
More specifically, the plurality of mounting blocks 2 in each row face a vertical reinforcing bar 41, the plurality of mounting blocks 2 in each row face a plurality of horizontal reinforcing bars 42, and each horizontal reinforcing bar 42 faces two mounting blocks 2. In the present embodiment, as shown in fig. 1, one vertical reinforcing bar 41 passes through the welding positions of the plurality of vertically arranged mounting blocks 2, and one horizontal reinforcing bar 42 passes through the welding positions of the two horizontally arranged mounting blocks 2.
More specifically, the distance between two horizontal reinforcing bars 42 adjacent in the same straight line in the horizontal direction is equal to the distance between two horizontally adjacent mounting blocks 2. As shown in fig. 1, in the present embodiment, the distance between two adjacent horizontal reinforcing bars 42 on the same straight line in the horizontal direction is 1m, and the horizontal reinforcing bars 42 in the horizontal direction are arranged according to this rule.
Besides the arrangement, the installation block 2 can be arranged between two adjacent horizontal reinforcing steel bars 42 on the same straight line in the horizontal direction at intervals. Besides the arrangement mode shown in fig. 1, the distance between two adjacent horizontal steel bars 42 in the same horizontal direction may also be twice the horizontal distance between two adjacent mounting blocks 2, that is: two adjacent horizontal reinforcing bars 42 in the same horizontal direction are separated by one installation block 2, and in this embodiment, the distance between two adjacent horizontal reinforcing bars 42 in the same horizontal line may be 2 m.
Optionally, the two opposite sides of the reinforcement cage 1 in the thickness direction are provided with mounting blocks 2, iron sheets 3 and reinforcing steel bars 4. In the embodiment, the installation blocks 2, the iron sheet 3 and the reinforcing steel bars 4 are arranged on the outer sides of two opposite sides of the reinforcement cage 1 in the thickness direction according to the steps.
Optionally, the mounting block 2 is provided with a groove, and the mounting block 2 is fixed on the reinforcement cage 1 through the groove. As shown in figure 3, the steel bars of the steel bar cage 1 are welded and fixed in the grooves on the mounting blocks 2, and the welding mode adopts full welding for ensuring the connection strength.
The embodiment of the invention also provides the underground continuous wall which comprises the reinforcement cage 1, the mounting blocks 2, the iron sheet 3 and the reinforcing steel bars 4 and is manufactured by the construction method of the underground continuous wall, the wall body of the underground continuous wall is flat, the thickness of the protective layer of the underground continuous wall is equal to that of the mounting blocks 2, and the thickness of the protective layer is uniform at each position.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A construction method of an underground diaphragm wall is characterized by comprising the following steps:
s1, fixing a plurality of mounting blocks (2) on the outer side of the reinforcement cage (1) in the thickness direction;
s2, mounting iron sheets (3) on the outer sides of the mounting blocks (2);
s3, fixing reinforcing steel bars (4) on the outer side of the iron sheet (3), wherein the fixing positions of the reinforcing steel bars (4) are opposite to the at least two mounting blocks (2) along the thickness direction of the iron sheet (3);
s4, hoisting the reinforcement cage (1) into a foundation trench of the underground continuous wall;
and S5, pouring concrete.
2. The underground continuous wall construction method according to claim 1, wherein the plurality of installation blocks (2) are arranged in an array outside the reinforcement cage (1) and have a plurality of columns and a plurality of rows, in each column, the plurality of installation blocks (2) are vertically arranged, the distance between two adjacent installation blocks (2) ranges from 2.5m to 3.5m, in each row, the plurality of installation blocks (2) are horizontally arranged, and the distance between two adjacent installation blocks (2) ranges from 0.5m to 1.5 m.
3. The underground continuous wall construction method according to claim 2, characterized in that a plurality of iron sheets (3) are arranged, the vertical dimension of the iron sheets (3) is equal to the distance between two vertically adjacent mounting blocks (2), the horizontal dimension of the iron sheets (3) is equal to the distance between two horizontally adjacent mounting blocks (2), and four corners of each iron sheet (3) are fixedly connected to four mounting blocks (2) respectively.
4. A method of constructing an underground diaphragm wall according to claim 1, wherein the reinforcing bars (4) include a plurality of vertical bars (41) and horizontal bars (42), the vertical bars (41) extending in a vertical direction, and the horizontal bars (42) extending in a horizontal direction;
along the horizontal direction, a plurality of vertical reinforcing steel bars (41) are parallel to each other and arranged at intervals, and the distance between every two adjacent vertical reinforcing steel bars (41) is equal to the distance between every two horizontally adjacent mounting blocks (2); along vertical direction, many horizontal reinforcing bars (42) are parallel to each other and the interval sets up, and the interval between two adjacent horizontal reinforcing bars (42) equals with the interval of two vertical adjacent installation pieces (2).
5. An underground continuous wall construction method according to claim 4, wherein the plurality of mounting blocks (2) of each row face one vertical reinforcing bar (41), the plurality of mounting blocks (2) of each row face a plurality of horizontal reinforcing bars (42), and each horizontal reinforcing bar (42) faces two mounting blocks (2).
6. An underground continuous wall construction method according to claim 4, wherein the space between two horizontally adjacent reinforcing bars (42) in the same horizontal line is equal to the space between two horizontally adjacent mounting blocks (2).
7. An underground diaphragm wall construction method according to claim 4, wherein two adjacent horizontal reinforcing bars (42) in the same line in the horizontal direction are spaced by one installation block (2).
8. An underground continuous wall construction method according to any one of claims 1 to 7, characterized in that the two opposite sides of the reinforcement cage (1) in the thickness direction are provided with the mounting blocks (2), the iron sheet (3) and the reinforcing steel bars (4).
9. A method for constructing an underground diaphragm wall according to any one of claims 1 to 7, wherein the mounting block (2) is provided with a groove, and the mounting block (2) is fixed on the reinforcement cage (1) through the groove.
10. An underground diaphragm wall manufactured by the underground diaphragm wall construction method according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011038969.XA CN112227347A (en) | 2020-09-28 | 2020-09-28 | Underground continuous wall and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011038969.XA CN112227347A (en) | 2020-09-28 | 2020-09-28 | Underground continuous wall and construction method thereof |
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| CN112227347A true CN112227347A (en) | 2021-01-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010281084A (en) * | 2009-06-03 | 2010-12-16 | Ohbayashi Corp | Constructive method of bracing wall, constructive method of pile, bracing wall, pile |
| CN207512723U (en) * | 2017-10-19 | 2018-06-19 | 上海建浩工程顾问有限公司 | A kind of structure construction for promoting diaphram wall surface concrete quality |
| CN108193666A (en) * | 2018-01-09 | 2018-06-22 | 中铁十六局集团北京轨道交通工程建设有限公司 | Underground continuous wall groove segment and diaphram wall |
| CN108978643A (en) * | 2018-07-10 | 2018-12-11 | 广东华固工程有限公司 | Supporting pile construction method, reinforcement cage structure and supporting pile structure |
| CN110295602A (en) * | 2019-04-24 | 2019-10-01 | 浙江省钱塘江管理局勘测设计院 | A kind of underwater concrete pouring technique |
-
2020
- 2020-09-28 CN CN202011038969.XA patent/CN112227347A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010281084A (en) * | 2009-06-03 | 2010-12-16 | Ohbayashi Corp | Constructive method of bracing wall, constructive method of pile, bracing wall, pile |
| CN207512723U (en) * | 2017-10-19 | 2018-06-19 | 上海建浩工程顾问有限公司 | A kind of structure construction for promoting diaphram wall surface concrete quality |
| CN108193666A (en) * | 2018-01-09 | 2018-06-22 | 中铁十六局集团北京轨道交通工程建设有限公司 | Underground continuous wall groove segment and diaphram wall |
| CN108978643A (en) * | 2018-07-10 | 2018-12-11 | 广东华固工程有限公司 | Supporting pile construction method, reinforcement cage structure and supporting pile structure |
| CN110295602A (en) * | 2019-04-24 | 2019-10-01 | 浙江省钱塘江管理局勘测设计院 | A kind of underwater concrete pouring technique |
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Application publication date: 20210115 |