CN111236251A - Underground continuous wall construction method for underground loose soil layer - Google Patents
Underground continuous wall construction method for underground loose soil layer Download PDFInfo
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- CN111236251A CN111236251A CN202010061299.7A CN202010061299A CN111236251A CN 111236251 A CN111236251 A CN 111236251A CN 202010061299 A CN202010061299 A CN 202010061299A CN 111236251 A CN111236251 A CN 111236251A
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- soil layer
- loose soil
- template
- underground
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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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
-
- 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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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses a construction method of an underground diaphragm wall aiming at an underground loose soil layer, which belongs to the field of building engineering and comprises a reinforcement cage of an underground diaphragm wall structure, wherein the reinforcement cage is fixed with a loose soil layer template through a fixing structure, the fixing structure comprises a reinforcement and a fixing node, and the fixing node is fixedly connected with a template fixing screw. The construction method can ensure that concrete at the collapse hole position of the pebble bed cannot leak in a large amount when the groove section of the underground continuous wall is poured, the flatness quality of the underground continuous wall at the section is better during later excavation, a large amount of manpower and material resources are not consumed to carry out concrete breaking work, and the construction process is convenient to install and has higher practicability.
Description
Technical Field
The invention belongs to the field of constructional engineering, and particularly relates to a construction method of an underground diaphragm wall aiming at an underground loose soil layer.
Background
At present, with the rapid development of the construction industry, the foundation pit supporting engineering under complex conditions is more and more mature. But some important and difficult problems in the construction process are still not effectively controlled, such as how to control leakage during concrete pouring, and the like.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provided is a method.
In order to solve the technical problems, the inventor obtains the technical scheme of the invention through practice and summary, and the invention discloses an underground continuous wall construction method aiming at the underground loose soil layer, which comprises a reinforcement cage of an underground continuous wall structure, wherein the reinforcement cage comprises a fixed structure, a loose soil layer template is fixed on the reinforcement cage through the fixed structure, the fixed structure comprises a reinforcement and a fixed node, the fixed node is fixedly connected with a template fixing screw rod,
the method comprises the following steps:
step one, determining the position of a loose soil layer of the groove section during excavation;
welding a template fixing screw on a transverse steel reinforcement framework of the reinforcement cage at the loose soil layer position;
step three, installing and fixing loose soil layer templates;
cutting the position beyond the template fixing screw after the loose soil layer template is fixed;
and step five, after cutting, fixing the template on the fixing screw rod by using a steel bar.
Preferably, the template fixing screw rods are welded on the transverse steel reinforcement framework at the loose soil layer position in a single-side welding mode, the screw rod interval is 60cm, and the template fixing screw rods are not welded at the position 1m above the soft loose soil layer.
Preferably, the fixing structure further comprises a nut, and the nut is adapted to the template fixing screw.
Preferably, the loose soil layer template material is a wood template or a thin steel plate, the transverse dimension of the loose soil layer template is the width of the reinforcement cage, the longitudinal dimension of the loose soil layer template is determined by the thickness of the loose soil layer determined when the underground continuous wall groove section is excavated, the thickness of the loose soil layer template exceeds 1m of the thickness of the weak soil layer, the loose soil layer template is arranged on the corresponding position of the reinforcement cage corresponding to the loose soil layer, the upper part and the lower part of the loose soil layer template exceed 50cm respectively, and holes are.
Preferably, the loose soil layer template is brushed with a release agent on both sides.
Preferably, the fixed node positions are selected on the transverse steel reinforcement framework of the reinforcement cage of the underground continuous wall structure and are uniformly distributed, and the template fixing screw rods are fully welded on the transverse steel reinforcement framework of the fixed nodes.
Compared with the prior art, the invention can obtain the following technical effects:
1. the invention has the advantages of convenient manufacture and processing, low cost and obvious control effect, and can ensure that the installation quality during the construction of the underground diaphragm wall meets the national standard and design requirement.
2. The construction method can ensure that concrete at the collapse hole position of the pebble bed cannot leak in a large amount when the groove section of the underground continuous wall is poured, the flatness quality of the underground continuous wall at the section is better during later excavation, a large amount of manpower and material resources are not consumed to carry out concrete breaking work, and the construction process is convenient to install and has higher practicability.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic view after installation;
fig. 2 is a schematic view before installation.
In the figure: 1. loose soil layer template, 2, fixed knot construct, 3, steel reinforcement cage, 4, release agent, 5, fixed node, 6, template fixed screw, 7, nut, 8, the reinforcing bar.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The application of the principles of the present invention will be further described with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1-2: a construction method of an underground diaphragm wall aiming at an underground loose soil layer comprises a reinforcement cage 3 of an underground diaphragm wall structure, the reinforcement cage 3 comprises a fixed structure 2, a loose soil layer template 1 is fixed on the reinforcement cage 3 through the fixed structure 2, the fixed structure 2 comprises a reinforcement 8 and a fixed node 5, a template fixing screw 6 is fixedly connected at the fixed node 5,
the method comprises the following steps:
step one, determining the position of a loose soil layer of the groove section during excavation;
welding a template fixing screw 6 on a transverse steel reinforcement framework of the reinforcement cage 3 at the loose soil layer position;
step three, installing and fixing the loose soil layer template 1;
cutting the position beyond the template fixing screw 6 after the loose soil layer template 1 is fixed;
and step five, after cutting, fixing the template fixing screw 6 by using the steel bar 8.
The template fixing screw 6 is welded on the transverse steel reinforcement framework at the loose soil layer position in a single-side welding mode, the screw distance is 60cm, and the template fixing screw 6 is not welded at the position 1m above the soft loose soil layer.
The fixing structure 2 further comprises a nut 7, and the nut 7 is adapted to the template fixing screw 6.
The loose soil layer template 1 is made of a wood template or a thin steel plate, the transverse dimension of the loose soil layer template 1 is the width of the reinforcement cage 3, the longitudinal dimension of the loose soil layer template is determined by the thickness of the loose soil layer determined when the underground continuous wall groove section is excavated, the thickness of the loose soil layer template exceeds 1m of the thickness of the weak soil layer, the loose soil layer template 1 is arranged on the corresponding position of the reinforcement cage 3 corresponding to the loose soil layer, the upper part and the lower part of the loose soil layer template exceed 50cm respectively, and holes.
And (3) brushing a release agent 4 on the double sides of the loose soil layer template 1.
The 5 position of fixed node select on the horizontal steel reinforcement skeleton of underground continuous wall structure steel reinforcement cage 3, evenly distributed, template set screw 6 full weld is on the horizontal steel reinforcement skeleton of fixed node 5.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A construction method of an underground diaphragm wall aiming at an underground loose soil layer comprises a reinforcement cage (3) of an underground diaphragm wall structure, and is characterized by comprising a fixed structure (2), wherein the reinforcement cage (3) is fixed with a loose soil layer template (1) through the fixed structure (2), the fixed structure (2) comprises a reinforcement (8) and a fixed node (5), the fixed node (5) is fixedly connected with a template fixing screw (6),
the method comprises the following steps:
step one, determining the position of a loose soil layer of the groove section during excavation;
secondly, welding a template fixing screw (6) on a transverse steel reinforcement framework of the reinforcement cage (3) at the loose soil layer position;
step three, installing and fixing the loose soil layer template (1);
cutting the position beyond the template fixing screw (6) after the loose soil layer template (1) is fixed;
and step five, after cutting, fixing the template fixing screw (6) by using a steel bar (8).
2. An underground diaphragm wall construction method aiming at the loose soil layer existing underground according to claim 1, characterized in that: the template fixing screw rods (6) are welded on the transverse steel reinforcement framework at the loose soil layer position in a single-side welding mode, the screw rod distance is 60cm, and the template fixing screw rods (6) are not welded at the position 1m above the soft loose soil layer.
3. An underground diaphragm wall construction method aiming at the loose soil layer existing underground according to claim 1, characterized in that: fixed knot constructs (2) and still includes nut (7), nut (7) adaptation in template set screw (6).
4. An underground diaphragm wall construction method aiming at the loose soil layer existing underground according to claim 1, characterized in that: the loose soil layer template (1) is made of a wood template or a thin steel plate, the transverse dimension of the loose soil layer template (1) is the width of the reinforcement cage (3), the longitudinal dimension of the loose soil layer template is determined by the thickness of the loose soil layer determined when the underground continuous wall groove section is excavated, the thickness of the loose soil layer template exceeds 1m of the thickness of the weak soil layer, the loose soil layer template (1) is installed at the corresponding position of the reinforcement cage (3) corresponding to the loose soil layer, the upper part and the lower part of the loose soil layer template exceed 50cm respectively, and holes are punched at the.
5. An underground diaphragm wall construction method aiming at the loose soil layer existing underground according to claim 1, characterized in that: and the loose soil layer template (1) is brushed with a release agent (4) on both sides.
6. An underground diaphragm wall construction method aiming at the loose soil layer existing underground according to claim 1, characterized in that: the position of the fixed node (5) is selected on the transverse steel reinforcement framework of the underground continuous wall structure steel reinforcement cage (3), the fixed node and the transverse steel reinforcement framework are uniformly distributed, and the template fixing screw rods (6) are fully welded on the transverse steel reinforcement framework of the fixed node (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010061299.7A CN111236251A (en) | 2020-01-19 | 2020-01-19 | Underground continuous wall construction method for underground loose soil layer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010061299.7A CN111236251A (en) | 2020-01-19 | 2020-01-19 | Underground continuous wall construction method for underground loose soil layer |
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| CN202010061299.7A Pending CN111236251A (en) | 2020-01-19 | 2020-01-19 | Underground continuous wall construction method for underground loose soil layer |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0881965A (en) * | 1994-09-05 | 1996-03-26 | Toda Constr Co Ltd | Molding plate of form for constructing retaining wall |
| CN101525943A (en) * | 2008-12-29 | 2009-09-09 | 青岛建设集团零零一工程有限公司 | Molding plate fixed structure of abnormity concrete member |
| CN203904971U (en) * | 2014-06-13 | 2014-10-29 | 中铁三局集团有限公司 | Reinforcement cage protective device capable of controlling necking, bar leakage and mud inclusion of underground diaphragm wall |
| CN107246006A (en) * | 2017-06-29 | 2017-10-13 | 深圳市蛇口招商港湾工程有限公司 | Concrete-pile reinforcement cage structure and pile-filling method |
-
2020
- 2020-01-19 CN CN202010061299.7A patent/CN111236251A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0881965A (en) * | 1994-09-05 | 1996-03-26 | Toda Constr Co Ltd | Molding plate of form for constructing retaining wall |
| CN101525943A (en) * | 2008-12-29 | 2009-09-09 | 青岛建设集团零零一工程有限公司 | Molding plate fixed structure of abnormity concrete member |
| CN203904971U (en) * | 2014-06-13 | 2014-10-29 | 中铁三局集团有限公司 | Reinforcement cage protective device capable of controlling necking, bar leakage and mud inclusion of underground diaphragm wall |
| CN107246006A (en) * | 2017-06-29 | 2017-10-13 | 深圳市蛇口招商港湾工程有限公司 | Concrete-pile reinforcement cage structure and pile-filling method |
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Application publication date: 20200605 |
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