CN115341542A - Breaking hammer with annular clamp and construction method for supporting steel pipe in pit area in deep foundation pit - Google Patents
Breaking hammer with annular clamp and construction method for supporting steel pipe in pit area in deep foundation pit Download PDFInfo
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- CN115341542A CN115341542A CN202211095224.6A CN202211095224A CN115341542A CN 115341542 A CN115341542 A CN 115341542A CN 202211095224 A CN202211095224 A CN 202211095224A CN 115341542 A CN115341542 A CN 115341542A
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- foundation pit
- pipe support
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 96
- 239000010959 steel Substances 0.000 title claims abstract description 96
- 238000010276 construction Methods 0.000 title claims abstract description 53
- 238000004088 simulation Methods 0.000 claims abstract description 11
- 238000009412 basement excavation Methods 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 7
- 238000004364 calculation method Methods 0.000 claims abstract description 5
- 230000035515 penetration Effects 0.000 claims abstract description 3
- 238000012544 monitoring process Methods 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 8
- 239000002689 soil Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 10
- 230000006378 damage Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/18—Placing by vibrating
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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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)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention mainly relates to the field of buildings, in particular to a breaking hammer with an annular hoop and a construction method for supporting a steel pipe in a pit area in a deep foundation pit; the method comprises the following five steps of S1.BIM modeling, S2. Construction environment and stress calculation simulation analysis, S3. Thin-wall steel pipe supporting pile penetration into S4. Pit-in-pit earthwork excavation, and S5. Foundation pit side wall retaining wall construction; the method comprises the following steps of simulating the pit-in-pit construction environment of a deep foundation pit by adopting a BIM modeling method, and ensuring the construction safety and economy of the foundation pit through stress calculation analysis and supporting pile type selection; on the premise of ensuring the construction safety, the construction period of the support is greatly reduced, a stable support system of the foundation pit is formed more quickly, and the construction operation risk of the deep foundation pit is reduced; the retaining wall of the side wall of the foundation pit is used for reinforcing the support once more, all the support steel pipes are integrally formed, a good operation environment is provided for subsequent raft construction, the construction safety is guaranteed, and the construction quality is guaranteed.
Description
Technical Field
The invention mainly relates to the field of buildings, in particular to a breaking hammer with an annular hoop and a construction method for supporting a steel pipe in a pit area in a deep foundation pit.
Background
In the building construction, as for the construction method of the pit in the deep foundation pit, the traditional method is a cement-soil gravity type retaining wall or a method of adopting a profile steel cement-soil mixing wall, an underground continuous wall and the like for supporting, and the construction methods need to be invested into large-scale construction machinery, have large disturbance to the foundation during construction, and have long construction period and high cost. Therefore, under the working condition that the large foundation pit is excavated, when the pit area in the pit is supported, the disturbance to the foundation is reduced as much as possible, and a quick, safe and economic supporting method needs to be selected.
Disclosure of Invention
In order to solve the problems, the invention adopts the following technical scheme.
The breaking hammer with the annular hoop comprises a breaking hammer and the annular hoop, wherein the annular hoop is arranged on the end head of the breaking hammer;
the base of annular clamp is fixed in afterbody in the end, the annular clamp is in the end below is provided with the ring perpendicular with the end axis, the ring pass through the telescopic link with the pedestal connection.
Furthermore, an elastic ring is arranged inside the circular ring.
A construction method for supporting and protecting a steel pipe in a pit area in a deep foundation pit comprises the following steps:
s1.BIM modeling
The BIM software is used for carrying out integral modeling on the whole foundation pit supporting system, and the structural stress form of the pit-in-pit system is determined;
s2, stress calculation simulation analysis
Carrying out construction environment simulation analysis by using Midas software, and carrying out stress and deformation simulation on a supporting structure, so as to select the type of the steel pipe supporting pile and determine the construction parameters of the steel pipe supporting pile;
s3, steel pipe support pile injection
Measuring and positioning the outer side of a pit area in the pre-excavated pit, reserving the position of the side wall of the pit, and arranging a piling center line of the steel pipe support pile along the side wall of the pit; installing a breaking hammer on an engineering truck, stretching a telescopic rod to the longest, placing a steel pipe support pile into an annular hoop by using the engineering truck, sleeving the upper part of the steel pipe support pile into an elastic ring, erecting the steel pipe support pile, righting the steel pipe support pile in place through a binding belt and starting to inject, injecting the steel pipe pile to the depth of 100-200 mm, removing the binding belt, and hammering the rest part of the steel pipe support pile downwards at the top by using the breaking hammer installed on the engineering truck until the steel pipe support pile is injected to the designed elevation; repeatedly injecting steel pipe supporting piles along the side wall of the pit, attaching the steel pipe supporting piles to the side wall of the whole pit, welding two sides of the top of each steel pipe supporting pile by using connecting steel bars, connecting the steel pipe supporting piles into a whole, and pouring concrete into the steel pipe supporting piles;
s4. Pit-in-pit earthwork excavation
Excavating earth in the pit; adopting a layered and segmented excavation form, reserving pit-in-pit foundation pit deformation monitoring points on the steel pipe support piles, monitoring horizontal displacement data of soil bodies, transporting earthwork to a pit-out safety position for storage and timely transporting the earthwork out of a field during excavation; after digging the soil to the designed elevation, carrying out concrete bottom sealing treatment;
s5. Foundation pit side wall retaining wall construction
And pouring a foundation pit side wall retaining wall on the inner side of the integral structure formed by connecting the steel pipe support piles.
Further, the step S5 includes:
s5.1, binding a steel bar net piece on the outer wall of the steel pipe support pile on the inner side of the foundation pit, and welding and fixing the steel bar net piece on the steel pipe support pile;
s5.2, welding tie bars, and connecting the reinforcing mesh and the steel pipe support piles into a whole;
s5.3, erecting a concrete template, reinforcing the template by using a water stop screw rod, pouring the concrete for the side wall of the foundation pit in a layered and sectional manner after the erecting of the template is completed, removing the template and the water stop screw rod after the concrete reaches the designed strength, and continuously keeping monitoring on the deformation of the supporting structure in subsequent construction.
Furthermore, the deformation monitoring point is located at the center of the top of the steel pipe support pile.
Further, in the step S3, when the breaking hammer performs the last 200mm to 600mm of the penetration of the remaining part, the telescopic rod of claim 2 is retracted.
The invention has the following beneficial effects:
the method is novel in scheme and clear in thought arrangement, full life cycle informatization management and control is adopted from foundation pit design, design and construction are integrated, modular construction is achieved, the construction period can be shortened, the construction progress is accelerated, and a good economic effect is achieved; and Midas software is adopted to carry out simulation analysis on the construction process of the supporting system, the stress and deformation of the supporting structure are simulated, monitoring points are arranged on the supporting structure, the safety condition of the supporting is monitored in real time, the construction safety is ensured, and the operation risk of pit-in-pit is reduced.
The light thin-wall steel pipe is used for a pit-in-pit supporting structure, has the characteristics of large lateral rigidity resistance, strong bearing capacity, small disturbance effect on a clay foundation during construction and the like, is easy to carry and stack, has light dead weight, does not need to worry about damage, can be connected into a whole after construction is completed, has good supporting integrity, is simple and easy to operate in a construction method, and has small deformation of a supporting system. Therefore, the light thin-wall steel pipe support is adopted, so that the cost can be obviously saved, the construction period is shortened, the support quality is easy to control, the support integrity is good, the safety of later construction is ensured, and the support can be popularized in the same type of engineering.
Annular clamp can erect and be spacing to steel pipe fender pile in the work progress, has improved convenience and construction quality's stability, uses manpower sparingly.
Drawings
FIG. 1 is a flow chart of the construction method of the present invention;
FIG. 2 is a schematic view of the construction structure of the steel pipe support pile;
FIG. 3 is a schematic view of a demolition hammer with an annular clamp;
fig. 4 is a partial view of fig. 3 at a.
1. Pile central line, 2, steel pipe fender pile, 3, connecting reinforcement, 4, reinforcing bar net piece, 5, drawknot reinforcing bar, 6, foundation ditch lateral wall barricade, 7, destruction hammer, 8, annular clamp, 9, elastic ring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A breaking hammer with an annular clamp comprises a breaking hammer 7 and the annular clamp 8, wherein the annular clamp 8 is arranged on the end of the breaking hammer 7, a base of the annular clamp 8 is welded on the tail of the end, a ring perpendicular to the axis of the end is arranged below the end of the annular clamp 8, and the ring is connected with the base through a telescopic rod 801; the inside elastic ring 9 that is provided with of ring prevents to destroy the hammer during operation and produces destruction to steel pipe fender pile 2 lateral wall.
A construction method for supporting and protecting a steel pipe in a pit area in a deep foundation pit comprises the following steps:
s1.BIM modeling
The BIM software is used for carrying out integral modeling on the whole foundation pit supporting system, and the structural stress form of the pit-in-pit system is determined;
s2, stress calculation simulation analysis
Carrying out construction environment simulation analysis by using Midas software, and carrying out stress and deformation simulation on a supporting structure, so as to select the type of the steel pipe supporting pile 2 and determine the construction parameters of the steel pipe supporting pile 2;
s3, steel pipe support pile injection
Measuring and positioning the outer side of a pit area in the pre-excavated pit, reserving the position of the side wall of the pit, and arranging a piling center line 1 of a steel pipe support pile 2 along the side wall of the pit; the method comprises the steps of installing a breaking hammer 7 on an engineering truck, stretching a telescopic rod 801 to the longest, placing a steel pipe supporting pile 2 into an annular hoop 8 by using the engineering truck, enabling the upper portion of the steel pipe supporting pile 2 to be sleeved into an elastic ring 9, erecting the steel pipe supporting pile 2, keeping the steel pipe supporting pile 2 sleeved in the annular hoop 8, feeding the breaking hammer 7 installed on the engineering truck one over the other, hammering the top of the steel pipe supporting pile 2, righting the steel pipe supporting pile 2 in place through a binding belt, starting injection, removing the binding belt after the steel pipe pile is injected to the depth of 100-200 mm, continuing feeding the breaking hammer 7 one over the other, hammering the top of the steel pipe supporting pile 2, injecting the rest of the steel pipe supporting pile 2, wherein when the glass breaking hammer 7 is fed up and down, the telescopic rod 801 is always at the longest position, and keeping the steel pipe supporting pile 2 always located in the annular hoop 8.
Wherein, when the last 200 mm-600 mm of the rest part of the breaking hammer 7 is penetrated, the telescopic rod 801 is retracted to ensure that the rest part is penetrated; until the steel pipe support pile 2 is penetrated to the designed elevation; repeatedly penetrate steel pipe fender pile 2 to steel pipe fender pile 2 along the pit lateral wall and attach whole pit lateral wall in the pit, use connecting reinforcement 3 to weld in 2 top both sides of steel pipe fender pile, with steel pipe fender pile 2 and be linked into whole to at the inside concrete placement of steel pipe fender pile 2.
S4. Pit-in-pit earthwork excavation
Excavating earth in the pit; adopting a layered and segmented excavation form, reserving a pit foundation pit deformation monitoring point in a pit at the center position of the top of the steel pipe support pile 2, monitoring horizontal displacement data of a soil body, transporting the earthwork to a safe position outside the pit for storage and timely transporting the earthwork out of the field during excavation; after digging to the designed elevation, carrying out concrete bottom sealing treatment;
s5. Foundation pit side wall retaining wall construction
S5.1, binding a steel bar net piece 4 on the outer wall of the steel pipe support pile 2 on the inner side of the foundation pit, and welding and fixing the steel bar net piece on the steel pipe support pile 2;
s5.2, welding tie bars 5, and connecting a steel bar net piece 4 and the steel pipe support pile 2 into a whole;
s5.3, erecting a concrete template, reinforcing the template by using the water stop screw rod, pouring concrete for the side wall retaining wall 6 of the foundation pit in a layered and sectional manner after the erecting of the template is completed, removing the template and the water stop screw rod after the concrete reaches the design strength, and continuously monitoring the deformation of the supporting structure in the subsequent construction.
The whole life cycle informatization management and control is adopted in the process, and the construction flow cycle and the specific construction progress are managed.
The present invention can be easily implemented by those skilled in the art from the above detailed description. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. On the basis of the disclosed embodiments, a person skilled in the art can combine different technical features at will, thereby implementing different technical solutions.
Claims (6)
1. The utility model provides a quartering hammer with annular clamp which characterized in that: the device comprises a breaking hammer (7) and an annular hoop (8), wherein the annular hoop (8) is arranged on the end head of the breaking hammer (7);
the base of annular clamp (8) is fixed in afterbody in the end, annular clamp (8) are in the end below is provided with the ring perpendicular with the end axis, the ring pass through telescopic link (801) with the pedestal connection.
2. The demolition hammer with annular clamp of claim 1 wherein: an elastic ring (9) is arranged in the circular ring.
3. A construction method for supporting and protecting a steel pipe in a pit area in a deep foundation pit is characterized by comprising the following steps:
s1.BIM modeling
The BIM software is used for carrying out integral modeling on the whole foundation pit supporting system, and the structural stress form of the pit-in-pit system is determined;
s2, stress calculation simulation analysis
Carrying out construction environment simulation analysis by using Midas software, and carrying out stress and deformation simulation on a supporting structure, so as to select the type of the steel pipe supporting pile (2) and determine the construction parameters of the steel pipe supporting pile (2);
s3, steel pipe support pile injection
Measuring and positioning the outer side of a pit area in the pre-excavated pit, reserving the position of the side wall of the pit, and arranging a piling center line (1) of a steel pipe support pile (2) along the side wall of the pit; installing the breaking hammer (7) of claim 2 on a engineering truck, stretching the telescopic rod (801) to the longest, and placing the steel pipe support pile (2) into the annular hoop (8) of claim 2 by using the engineering truck, so that the upper part of the steel pipe support pile (2) is sleeved into the elastic ring (9); erecting the steel pipe support piles (2), righting the steel pipe support piles (2) in place through binding bands, starting to penetrate into the steel pipe piles to the depth of 100-200 mm, removing the binding bands, and hammering the steel pipe support piles (2) downwards into the rest part at the top by using a breaking hammer (7) which is arranged on a engineering truck and is described in claim 2 until the steel pipe support piles (2) penetrate into the designed elevation; repeatedly injecting steel pipe supporting piles (2) to the steel pipe supporting piles (2) along the side wall of the pit, attaching the side wall of the whole pit to the side wall of the pit, welding two sides of the top of the steel pipe supporting piles (2) by using connecting steel bars (3), connecting the steel pipe supporting piles (2) into a whole, and pouring concrete into the steel pipe supporting piles (2);
s4. Pit-in-pit earthwork excavation
Excavating earth in the pit; adopting a layered and segmented excavation form, reserving pit-in-pit foundation pit deformation monitoring points on the steel pipe support piles (2), monitoring horizontal displacement data of a soil body, transporting earthwork to a pit-out safety position for storage and timely transporting the earthwork out of a field during excavation; after digging the soil to the designed elevation, carrying out concrete bottom sealing treatment;
s5. Foundation pit side wall retaining wall construction
And pouring a foundation pit side wall retaining wall (6) at the inner side of the integral structure formed by connecting the steel pipe support piles (2).
4. The construction method for supporting the steel pipe in the pit area of the deep foundation pit as claimed in claim 3, wherein: the step S5 includes:
s5.1, binding a steel bar net piece (4) on the outer wall of the steel pipe support pile (2) on the inner side of the foundation pit, and welding and fixing the steel bar net piece on the steel pipe support pile (2);
s5.2, welding tie bars (5), and connecting a bar net piece (4) and the steel pipe support pile (2) into a whole;
s5.3, erecting a concrete template, reinforcing the template by using the water stop screw rod, pouring concrete on the side wall of the foundation pit (6) in a layered and sectional manner after the erecting of the template is finished, removing the template and the water stop screw rod after the concrete reaches the design strength, and continuously monitoring the deformation of the supporting structure in the subsequent construction.
5. The construction method for the steel pipe support of the pit area in the deep foundation pit according to claim 3, characterized in that: the deformation monitoring point is located at the center of the top of the steel pipe support pile (2).
6. The construction method for the steel pipe support of the pit area in the deep foundation pit according to claim 3, characterized in that: in the step S3, when the breaking hammer 7 performs the last 200mm to 600mm of the remaining part penetration, the telescopic rod 801 according to claim 2 is retracted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211095224.6A CN115341542A (en) | 2022-09-08 | 2022-09-08 | Breaking hammer with annular clamp and construction method for supporting steel pipe in pit area in deep foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211095224.6A CN115341542A (en) | 2022-09-08 | 2022-09-08 | Breaking hammer with annular clamp and construction method for supporting steel pipe in pit area in deep foundation pit |
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| CN115341542A true CN115341542A (en) | 2022-11-15 |
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| CN202211095224.6A Pending CN115341542A (en) | 2022-09-08 | 2022-09-08 | Breaking hammer with annular clamp and construction method for supporting steel pipe in pit area in deep foundation pit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118531810A (en) * | 2024-07-23 | 2024-08-23 | 山东大学 | Construction method of permanent supporting wall of whole row of piles |
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| CN107090837A (en) * | 2017-06-29 | 2017-08-25 | 中国建筑第二工程局有限公司 | Pit-in-pit reinforced concrete retaining wall composite supporting structure and construction method thereof |
| CN108914942A (en) * | 2018-06-28 | 2018-11-30 | 上海建工五建集团有限公司 | A kind of system of deep foundation pit support and its construction method |
| CN112813984A (en) * | 2020-12-31 | 2021-05-18 | 攀钢集团工程技术有限公司 | Deep foundation pit construction method under complex geological condition |
| CN214245799U (en) * | 2020-11-12 | 2021-09-21 | 蒲树珍 | Pile foundation connecting device convenient to dismantle and install |
| DE202022104117U1 (en) * | 2022-07-21 | 2022-08-25 | China Railway Liuyuan Group Co., Ltd. | An underground mine support structure combined with piles and pipes, which can take into account the treatment of voids |
| CN115012429A (en) * | 2022-06-29 | 2022-09-06 | 中交上海航道局有限公司 | Supporting structure for exposing foundation pit for long time and construction method thereof |
-
2022
- 2022-09-08 CN CN202211095224.6A patent/CN115341542A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107090837A (en) * | 2017-06-29 | 2017-08-25 | 中国建筑第二工程局有限公司 | Pit-in-pit reinforced concrete retaining wall composite supporting structure and construction method thereof |
| CN108914942A (en) * | 2018-06-28 | 2018-11-30 | 上海建工五建集团有限公司 | A kind of system of deep foundation pit support and its construction method |
| CN214245799U (en) * | 2020-11-12 | 2021-09-21 | 蒲树珍 | Pile foundation connecting device convenient to dismantle and install |
| CN112813984A (en) * | 2020-12-31 | 2021-05-18 | 攀钢集团工程技术有限公司 | Deep foundation pit construction method under complex geological condition |
| CN115012429A (en) * | 2022-06-29 | 2022-09-06 | 中交上海航道局有限公司 | Supporting structure for exposing foundation pit for long time and construction method thereof |
| DE202022104117U1 (en) * | 2022-07-21 | 2022-08-25 | China Railway Liuyuan Group Co., Ltd. | An underground mine support structure combined with piles and pipes, which can take into account the treatment of voids |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118531810A (en) * | 2024-07-23 | 2024-08-23 | 山东大学 | Construction method of permanent supporting wall of whole row of piles |
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Application publication date: 20221115 |