CN110847193A - Foundation pit support beam dismantling method - Google Patents
Foundation pit support beam dismantling method Download PDFInfo
- Publication number
- CN110847193A CN110847193A CN201911165962.1A CN201911165962A CN110847193A CN 110847193 A CN110847193 A CN 110847193A CN 201911165962 A CN201911165962 A CN 201911165962A CN 110847193 A CN110847193 A CN 110847193A
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- Prior art keywords
- pile
- foundation pit
- steel plate
- support
- support beam
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 40
- 239000010959 steel Substances 0.000 claims abstract description 40
- 238000010276 construction Methods 0.000 abstract description 12
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 208000001840 Dandruff Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Classifications
-
- 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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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses a foundation pit supporting beam dismantling method, which comprises the following steps: 1. installing a support-replacing pile; 2. installing a pile cap; 3. steel bars are implanted into the waist beam, the through hole is formed in the waist beam, and a second steel plate is welded on the waist beam; 4. the first steel plate and the second steel plate are welded and integrated through threaded steel pipes. The construction method solves the problem of stability of the whole supporting structure after the supporting beam is removed through the threaded steel pipe, is rapid and simple, has relatively low cost and is convenient to implement.
Description
Technical Field
The invention relates to the field of foundation pit supporting structure construction, in particular to a foundation pit supporting beam dismantling method.
Background
With the increase of urban construction speed, land resources in central areas of cities are remarkably tense, and the problems that the urban central areas need to be dismantled are more and more involved in the urban construction process. The capital pressure of the construction side is large. The project construction side often adopts a scheme of staged construction, but the construction unit also has higher requirements on the image progress. The deep foundation pit structure of stage construction is related to, appropriate support replacement measures are adopted, the inner support structure of the support structure is reasonably dismantled in advance to obtain more operation surfaces, the construction period can be shortened, and the cost is saved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a foundation pit supporting beam dismantling method.
In order to achieve the purpose, the invention adopts the technical scheme that: the provided foundation pit supporting beam dismantling method comprises the following steps:
a. installing a support-changing pile along the outer side line of the basement at one side of the support beam which is not constructed and needs to be dismantled;
b. fixedly placing a pile cap on the support-changing pile, and embedding a first steel plate on the pile cap;
c. a waist beam is arranged above the pile cap, and a steel bar is implanted into the waist beam, a through hole is formed in the waist beam, and a second steel plate is welded on the waist beam;
d. the first steel plate and the second steel plate are welded and integrated through threaded steel pipes. Preferably, the step c of installing a support mechanism further comprises: one end of the inclined steel pipe, which is close to the vertical square stock, is provided with big scurf.
Preferably, the pile replacement in the step a is a cast-in-place pile.
Preferably, the pile cap in the step b is trapezoidal.
Preferably, the number of the implanted steel bars in the step c is 3-5.
Preferably, the diameter of the threaded steel pipe is phi 50-100 mm.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the problem of stability of the whole supporting structure after the supporting beam is removed is solved through the threaded steel pipe 6;
2. the method is rapid, simple, relatively low in cost and convenient to implement.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic view of a method for removing a supporting beam of a foundation pit;
FIG. 2 is a schematic view of a support beam structure in a method for removing a support beam of a foundation pit;
fig. 3 is a schematic view of pile cap installation in a foundation pit support beam dismantling method.
The method comprises the following steps of 1, pile replacement, 2, a pile cap, 3, a first steel plate, 4, a second steel plate, 5, a threaded steel pipe, 6, a waist beam, 7 and a support beam.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and 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.
Referring to fig. 1-3, a method for removing a foundation pit supporting beam is characterized by comprising the following steps:
a. installing a support-changing pile 1 along the outer side line of the basement at one side of the support beam 7 which is not constructed and needs to be dismantled;
b. a pile cap 2 is fixedly placed on the support-changing pile 1, and a first steel plate 3 is pre-buried on the pile cap 2;
c. a waist beam 6 is arranged above the pile cap 2, and a second steel plate 4 is welded on the waist beam 6 after steel bars are implanted and through holes are formed in the waist beam;
d. the first steel plate 3 and the second steel plate 4 are welded and integrated through a threaded steel pipe 5.
Wherein: in the step a, the support-replacing pile 1 is a cast-in-place pile; the pile cap 2 in the step b is in a trapezoid shape; the number of the implanted steel bars in the step c is 3; the diameter of the threaded steel pipe 5 is phi 50 mm.
The implementation mode of the invention is as follows:
installing a support-changing pile 1 along the outer side line of the basement on one side of the basement structure which is not constructed; after the construction of the support pile 1 is completed, a pile cap 2 is installed on the support pile 1, and a first steel plate 3 is pre-buried on the pile cap. And a second steel plate 4 is arranged on the wale 6 corresponding to the pile cap 2. After the linear distance between the first plate 3 and the second plate 4 is determined, the threaded steel pipe 6 is blanked, and two ends of the threaded steel pipe 6 are welded on the first plate 3 and the second plate 4 respectively. The force received by the wale 6 is transmitted to the pile cap 2 through the support beam 7 and finally transmitted to the support-replacing pile 1, and the stability of the whole supporting structure is still ensured under the condition that the supporting beam is removed in advance.
The construction method solves the problem of stability of the whole supporting structure after the supporting beam is removed through the threaded steel pipe, and is rapid, simple, relatively low in cost and convenient to implement.
It is to be understood that the invention is not limited to the specific embodiments described above, but is intended to cover various insubstantial modifications of the inventive process concepts and solutions, or its application to other applications without modification.
Claims (5)
1. A foundation pit supporting beam dismantling method is characterized by comprising the following steps:
a. installing a support-changing pile (1) along the outer side line of the basement at one side of the support beam (7) which is not constructed and needs to be dismantled;
b. a pile cap (2) is fixedly placed on the support-changing pile (1), and a first steel plate (3) is embedded in the pile cap (2);
c. a waist beam (6) is arranged above the pile cap (2), and a second steel plate (4) is welded on the waist beam (6) through steel bars and through holes implanted;
d. the first steel plate (3) and the second steel plate (4) are welded and integrated through a threaded steel pipe (5).
2. A foundation pit support beam demolition method according to claim 1, characterized in that the bracing-change pile (1) in step a is a cast-in-place pile.
3. A foundation pit support beam demolition method as claimed in claim 1, wherein the pile cap (2) in step b is trapezoid-shaped.
4. The method for dismantling the supporting beam of the foundation pit as claimed in claim 1, wherein the number of the implanted steel bars in the step c is 3-5.
5. A foundation pit support beam dismantling method as claimed in any one of claims 1 to 4, wherein the diameter of the threaded steel pipe (5) is 50mm to 100 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911165962.1A CN110847193A (en) | 2019-11-25 | 2019-11-25 | Foundation pit support beam dismantling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911165962.1A CN110847193A (en) | 2019-11-25 | 2019-11-25 | Foundation pit support beam dismantling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110847193A true CN110847193A (en) | 2020-02-28 |
Family
ID=69604381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911165962.1A Pending CN110847193A (en) | 2019-11-25 | 2019-11-25 | Foundation pit support beam dismantling method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110847193A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101044977B1 (en) * | 2010-12-16 | 2011-06-29 | 삼정건설 주식회사 | Locking mechanism of construction brace |
| CN205024690U (en) * | 2015-08-11 | 2016-02-10 | 中建二局第三建筑工程有限公司 | Additional strengthening is propped in tearing open of supporting in deep basal pit |
| CN209179021U (en) * | 2018-12-03 | 2019-07-30 | 中国建筑一局(集团)有限公司 | A foundation pit row pile support system |
-
2019
- 2019-11-25 CN CN201911165962.1A patent/CN110847193A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101044977B1 (en) * | 2010-12-16 | 2011-06-29 | 삼정건설 주식회사 | Locking mechanism of construction brace |
| CN205024690U (en) * | 2015-08-11 | 2016-02-10 | 中建二局第三建筑工程有限公司 | Additional strengthening is propped in tearing open of supporting in deep basal pit |
| CN209179021U (en) * | 2018-12-03 | 2019-07-30 | 中国建筑一局(集团)有限公司 | A foundation pit row pile support system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200228 |