CN114575337A - Construction method convenient for repeatedly driving pipe piles in batches - Google Patents
Construction method convenient for repeatedly driving pipe piles in batches Download PDFInfo
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- CN114575337A CN114575337A CN202210328518.2A CN202210328518A CN114575337A CN 114575337 A CN114575337 A CN 114575337A CN 202210328518 A CN202210328518 A CN 202210328518A CN 114575337 A CN114575337 A CN 114575337A
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- pile
- steel sleeve
- foundation pit
- tubular
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- 238000010276 construction Methods 0.000 title claims abstract description 65
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 68
- 239000010959 steel Substances 0.000 claims abstract description 68
- 238000000034 method Methods 0.000 claims description 14
- 230000035515 penetration Effects 0.000 claims description 5
- 238000009412 basement excavation Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 4
- 238000010009 beating Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
-
- 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
- E02D5/66—Mould-pipes or other moulds
-
- 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
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/10—Power-driven drivers with pressure-actuated hammer, i.e. the pressure fluid acting directly on the hammer structure
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a construction method convenient for repeated pipe piles in batches, which is characterized in that a foundation pit is excavated at the periphery of the pipe piles, a steel sleeve is sleeved in the foundation pit to prevent hole collapse and facilitate the positioning of a hammering pile machine, a part of the foundation pit is backfilled after the steel sleeve is installed to fix the steel sleeve, and then pile driving operation is carried out. The invention adopts the steel pile casing, well solves the problems that after the pipe pile is exposed by excavation, a foundation pit at the edge of the pipe pile is easy to collapse and the pipe pile is difficult to position by a rethreshing construction machine, enables the site to be flat after backfilling by adjusting the height of the steel pile casing, well solves the problem that the construction machine is difficult to move, and can rethread the pipe pile below the bearing platform in batches.
Description
Technical Field
The invention relates to the technical field of pipe pile foundation construction, in particular to a construction method convenient for repeated pipe pile driving in batches.
Background
Increase foundation bearing capacity, can set up the pile foundation that different types of stake and ground, cushion cap formed in the ground, its effect is on transmitting superstructure's load to the stronger soil layer of deep bearing capacity, or with the crowded bearing capacity and closely knit degree of closely knit improvement foundation soil of weak soil layer. The concrete precast tubular pile is a pile type which is widely applied, and has the advantages of good quality, quick construction, strong adaptability and the like. If the bearing capacity of the foundation can not meet the design requirements after the pile sinking construction of the precast tubular pile, the precast tubular pile is usually redrilled, so that the bearing capacity of the foundation is improved to meet the design requirements. After pile sinking construction of the tubular pile, the height of the pile head is different, so that when the tubular pile is repeatedly driven, the tubular pile below the ground elevation is difficult to position, the construction machinery is difficult to move, and the subsequent operation is influenced. In addition, because the pile hole of the tubular pile below the ground elevation is easy to collapse, the pile hole needs to be cleaned again to remove construction obstacles, so that the tubular pile re-driving construction progress is slow, and the construction quality is difficult to ensure.
Disclosure of Invention
In order to solve the problems, the invention aims to provide the construction method which is convenient to construct, high in construction efficiency and capable of enabling the tubular piles to be repeatedly drilled in batches without influencing subsequent operation.
The invention is realized by the following technical scheme:
a construction method convenient for repeatedly driving pipe piles in batches comprises the following steps:
the method comprises the following steps: determining the position of a tubular pile in a construction site, and excavating the construction site surface above the tubular pile to form a foundation pit until the tubular pile is exposed out of the foundation pit;
step two: installing a steel sleeve in the foundation pit;
step three: backfilling part of the foundation pit to enable the outer part of the steel sleeve to be abutted against the inner side wall of the foundation pit;
step four: and moving the hammering pile machine to the position above the steel sleeve, and repeatedly driving the pipe pile in the steel sleeve to a target depth.
Further, the first step may be preceded by:
and leveling the construction site, and positioning the position of the tubular pile according to a construction drawing and/or a lead control point.
Further, the first step specifically includes:
determining an end plate of the tubular pile exposed out of the end face of the foundation pit;
and excavating a foundation pit, wherein the length of the pipe pile between the end plate and the bottom surface of the foundation pit is 100-200 mm.
Further, the second step specifically includes:
and correcting the position and the verticality of the steel sleeve to enable the axis of the steel sleeve to be parallel to the axis of the tubular pile, wherein the distance is not more than 100 millimeters.
Further, the second step specifically includes: the diameter of the steel sleeve is 800 millimeters.
Further, the third step further includes:
and cutting off the steel sleeve to enable the upper end face of the steel sleeve to be flush with the ground of the construction site.
Further, the pile hammering machine comprises a pile feeder, and the fourth step specifically comprises:
adjusting the verticality of the pile feeder so that the vertical and horizontal verticality of the pile feeder does not exceed 1%.
Further, be provided with the hydraulic hammer on the pile follower, step four specifically includes:
the hydraulic hammer is an HDY18 hydraulic hammer, and the mode of redressing the tubular pile is as follows: the lifting hammer is 0.2 to 0.4 meter, and the penetration degree is 2 cm;
the hydraulic hammer is an HDY16 hydraulic hammer, and the mode of redressing the tubular pile is as follows: the lifting hammer is 0.3 to 0.4 meter, and the penetration degree is 2 cm;
the hammering times of the hydraulic hammer are 200-300 times.
Furthermore, a fixing ring is arranged on the outer wall of the pile feeder, the fixing ring moves along the pile feeder or is fixed on the pile feeder, and the fixing ring is abutted against the top end opening of the steel sleeve, so that the part of the pile feeder penetrates into the steel sleeve.
Further, the steel sleeve includes: the device comprises an inner cylinder body, an outer cylinder body and a plurality of supporting bodies;
the inner cylinder and the outer cylinder are cylindrical, the diameter of the inner cylinder is smaller than that of the outer cylinder, and the axis of the inner cylinder is coincided with the axis of the outer cylinder and fixed in the outer cylinder;
the supporting bodies are arranged between the inner cylinder body and the outer cylinder body at equal intervals, and two ends of each supporting body are respectively vertical to the inner cylinder body and the outer cylinder body;
an accommodating cavity is formed among the inner cylinder body, the outer cylinder body and the supporting body.
The invention has the beneficial effects that:
the construction speed is fast: the invention adopts the steel pile casing, well solves the problems that after the pipe pile is exposed by excavation, a foundation pit at the edge of the pipe pile is easy to collapse and the pipe pile is difficult to position by refitting construction machinery, and well solves the problem that the construction machinery is difficult to move by adjusting the height of the steel pile casing, and the pipe pile below a bearing platform can be refitted in batches;
the engineering cost is low; in the construction process, the steel casing adopted by the invention can be repeatedly used, and pile splicing is not needed in the repeated driving process, so that the invention has good economic benefit and social benefit.
Drawings
FIG. 1 is a sectional view of a construction site when a foundation pit is excavated and a pipe pile is exposed in the first step of the method;
FIG. 2 is a cross-sectional view of the enlarged foundation pit of FIG. 1;
FIG. 3 is a sectional view of a construction site at the second step in the present invention;
FIG. 4 is a sectional view of a construction site at the third step in the present invention;
FIG. 5 is a schematic view of a portion of the truncated steel casing above a construction site according to the present invention;
FIG. 6 is a schematic view of a redrawing pipe pile;
fig. 7 is a perspective view of a steel sleeve according to the present invention.
[ description of reference ]
1. A construction site; 2. a tubular pile; 3. a foundation pit; 4. a steel sleeve; 41. an inner cylinder; 42. an outer cylinder; 43. a support body; 5. a hammering device; 51. a pile feeder; 52. and (4) fixing the ring.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1 to 6, the construction method for conveniently redressing tubular piles 2 in batches disclosed by the invention comprises the following steps:
the method comprises the following steps: determining the position of a tubular pile 2 in a construction site 1, and excavating the surface of the construction site 1 above the tubular pile 2 to form a foundation pit 3 until the tubular pile 2 is exposed out of the foundation pit 3;
step two: installing a steel sleeve 4 in the foundation pit 3;
step three: backfilling part of the foundation pit 3 to enable the outer part of the steel sleeve 4 to be abutted against the inner side wall of the foundation pit 3;
step four: and the hammering pile machine 5 moves to the position above the steel sleeve 4, and the tubular pile 2 in the steel sleeve 4 is repeatedly hammered to the target depth.
In the above embodiment, after the position of the tubular pile 2 in the construction site 1 is determined, the construction site 1 corresponding to the position of the tubular pile 2 is excavated, and in the excavation process, the excavation operation is completed until the tubular pile 2 is exposed to the target height. After the excavation operation is completed, the steel sleeve 4 is sleeved on the periphery of the tubular pile 2, and the steel sleeve 4 is arranged inside the excavated foundation pit 3. And backfilling part of the foundation pit 3 to ensure that the inner wall of the foundation pit 3 is reduced and attached to the outer wall of the steel sleeve 4, so as to ensure that the steel sleeve 4 is fixed in the foundation pit 3.
The operation of redressing the tubular pile 2 can be executed after the steel sleeve 4 is fixed, the time and the progress of the redressing operation depend on the bearing capacity of the foundation required by the construction site 1, and the redressing can be stopped when the length of the tubular pile 2 penetrating into the foundation meets the requirement of the bearing capacity.
In the above embodiment, the specific method for determining the position of the tubular pile 2 before the first step is as follows:
and (5) leveling the construction site 1 and ensuring that the construction site 1 is in a horizontal state. And positioning the position of the tubular pile 2 according to a preset construction drawing and/or a wire control point, positioning or driving a timber pile at the position of the tubular pile 2 through the position of the tubular pile 2 acquired by a total station, and guiding the tubular pile to the periphery to make pile protection points by a cross method.
Wherein, the first step specifically comprises:
determining an end plate of the tubular pile 2 exposed out of the end face of the foundation pit 3;
and excavating a foundation pit 3, and enabling the length of the tubular pile 2 between the end plate and the bottom surface of the foundation pit 3 to be 100-200 mm.
And determining whether the tubular pile 2 is excavated after the foundation pit 3 is deep, wherein only the end plate of the tubular pile 2 is determined. After the end plate is determined, the tubular pile 2 between the end plate and the bottom of the foundation pit 3 is cleaned, whether the tubular pile is complete or not is checked, and it is determined that the exposed tubular pile 2 cannot be damaged due to repeated beating in the repeated beating process. If the exposed tubular pile 2 is incomplete, the tubular pile 2 is repaired to be in a complete state.
The second step specifically comprises:
and correcting the position and the verticality of the steel sleeve 4 to enable the axis of the steel sleeve 4 to be parallel to the axis of the tubular pile 2, wherein the distance is not more than 100 mm.
In this embodiment, the pile hammering machine 5 is right through the steel sleeve 4 the tubular pile 2 is located, therefore need make the axle center of steel sleeve 4 and the axle center coincidence of tubular pile 2 as far as possible, the error is within 100 millimeters, avoids pile hammering machine 5 to be located one side of tubular pile 2 and hammers tubular pile 2, causes the problem that tubular pile 2 inclines or damages.
The second step specifically comprises: the diameter of the steel sleeve 4 is 800 mm. So as to ensure the stability of the wall protection support of the steel sleeve 4 and the hammering pile machine 5 can go deep into the steel sleeve 4 to contact the tubular pile 2.
The third step further comprises the following steps: and cutting off the steel sleeve 4 to enable the upper end surface of the steel sleeve 4 to be flush with the ground of the construction site 1.
In this embodiment, after one of the tubular piles 2 is rethreaded, the hammering pile driver 5 needs to move to the next foundation pit 3 to rethread the other tubular piles 2 that are not rethreaded. After the steel sleeve 4 is installed, the part, higher than the ground of the construction site 1, of the steel sleeve 4 is cut off, so that the hammering pile machine 5 can move above the construction site 1, and the steel sleeve 4 is prevented from limiting the movement of the hammering pile machine 5.
The hammering pile machine 5 comprises a pile feeder 51, and the fourth step specifically comprises: the verticality of the pile feeder 51 is adjusted so that the vertical and horizontal verticality of the pile feeder 51 does not exceed 1%. So as to ensure that the tubular pile 2 can not be inclined due to repeated driving when the tubular pile 2 is repeatedly driven.
The pile feeder 51 is provided with a hydraulic hammer, and the fourth step specifically comprises:
the hydraulic hammer is an HDY18 hydraulic hammer, and the mode of rethreshing the tubular pile 2 is as follows: lifting the hammer to 0.2-0.4 m, and penetrating the hammer to 2 cm;
the hydraulic hammer is an HDY16 hydraulic hammer, and the mode of rethreshing the tubular pile 2 is as follows: the lifting hammer is 0.3 to 0.4 meter, and the penetration degree is 2 cm;
the hammering times of the hydraulic hammer are 200-300 times.
In the above embodiment, the secondary striking operation depends on the specification of the hydraulic hammer and the bearing capacity requirement of the construction site 1, and meanwhile, for different hydraulic hammers, the secondary striking operation needs to avoid the integrity of the position of the pipe pile 2 at the struck position in the secondary striking process, so as to prevent the damage of the pipe pile 2.
A fixing ring 52 is arranged on the outer wall of the pile feeder 51, the fixing ring 52 moves along the pile feeder 51 or is fixed on the pile feeder 51, and the fixing ring 52 is abutted against the top opening of the steel sleeve 4, so that the pile feeder 51 is partially inserted into the steel sleeve 4.
The purpose of the movement of the retainer ring 52 along the pile driver 51 is to adjust the length of the pile driver 51 deep into the steel casing 4, while the operator can adjust the verticality of the pile driver 51 by assuming shims between the retainer ring 52 and the steel casing 4. After the fixing ring 52 is fixed to the pile driver 51, the pile driver 51 can be fixed to the steel sleeve 4 by the fixing ring 52.
Referring to fig. 7, in the above embodiment, the steel sleeve 4 includes: an inner cylinder 41, an outer cylinder 42, and a plurality of supports 43;
the inner cylinder 41 and the outer cylinder 42 are cylindrical, the diameter of the inner cylinder 41 is smaller than that of the outer cylinder 42, and the axis of the inner cylinder 41 is coincided with the axis of the outer cylinder 42 and fixed in the outer cylinder 42;
the supporting body 43 is equidistantly arranged between the inner cylinder 41 and the outer cylinder 42, and two ends of the supporting body 43 are respectively vertical to the inner cylinder 41 and the outer cylinder 42;
an accommodating cavity is formed among the inner cylinder 41, the outer cylinder 42 and the supporting body 43.
Based on the embodiment, the construction method convenient for repeatedly driving the tubular piles 2 in batches can improve the construction speed, the problems that the foundation pit 3 at the edge of the tubular pile 2 is easy to collapse and the tubular piles 2 are difficult to position by repeatedly driving the construction machinery after the tubular piles 2 are exposed by excavation are solved well by adopting the steel pile casings, the site is leveled after backfilling by adjusting the height of the steel pile casings, the problem that the construction machinery is difficult to move is solved well, and the tubular piles 2 below a bearing platform can be repeatedly driven in batches. Meanwhile, the construction method convenient for repeatedly driving the tubular piles 2 in batches disclosed by the invention has low engineering cost; in the construction process, the steel casing adopted by the invention can be repeatedly used, and pile splicing is not needed in the repeated driving process, so that the invention has good economic benefit and social benefit.
It should be understood that the above description of specific embodiments of the present invention is only for the purpose of illustrating the technical lines and features of the present invention, and is intended to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, but the present invention is not limited to the above specific embodiments. It is intended that all such changes and modifications as fall within the scope of the appended claims be embraced therein.
Claims (10)
1. A construction method convenient for repeatedly driving tubular piles in batches is characterized by comprising the following steps:
the method comprises the following steps: determining the position of a tubular pile in a construction site, and excavating the construction site surface above the tubular pile to form a foundation pit until the tubular pile is exposed out of the foundation pit;
step two: installing a steel sleeve in the foundation pit;
step three: backfilling part of the foundation pit to enable the outer part of the steel sleeve to be abutted against the inner side wall of the foundation pit;
step four: and moving the hammering pile machine to the position above the steel sleeve, and repeatedly driving the pipe pile in the steel sleeve to a target depth.
2. The construction method convenient for repeatedly driving pipe piles in batches according to claim 1, wherein the first step further comprises the following steps:
and (3) leveling a construction site, and positioning the position of the pipe pile according to a construction drawing and/or a wire control point.
3. The construction method convenient for repeatedly driving tubular piles in batches according to claim 1, wherein the first step specifically comprises the following steps:
determining an end plate of the tubular pile exposed out of the end face of the foundation pit;
and excavating a foundation pit, wherein the length of the pipe pile between the end plate and the bottom surface of the foundation pit is 100-200 mm.
4. The construction method convenient for repeatedly driving tubular piles in batches according to claim 1, wherein the second step specifically comprises:
and correcting the position and the verticality of the steel sleeve to enable the axis of the steel sleeve to be parallel to the axis of the tubular pile, wherein the distance is not more than 100 mm.
5. The construction method convenient for repeatedly driving tubular piles in batches according to claim 1, wherein the second step specifically comprises: the diameter of the steel sleeve is 800 millimeters.
6. The construction method convenient for repeatedly driving tubular piles in batches according to claim 1, wherein the third step is followed by the following steps:
and cutting off the steel sleeve to enable the upper end face of the steel sleeve to be flush with the ground of the construction site.
7. The construction method convenient for repeatedly driving tubular piles in batches according to claim 1, wherein the pile hammering machine comprises a pile feeder, and the fourth step specifically comprises:
adjusting the verticality of the pile feeder to ensure that the vertical and horizontal verticality of the pile feeder does not exceed 1%.
8. The construction method convenient for repeatedly driving tubular piles in batches according to claim 7, wherein a hydraulic hammer is arranged on the pile feeder, and the fourth step specifically comprises:
the hydraulic hammer is an HDY18 hydraulic hammer, and the mode of redressing the tubular pile is as follows: the lifting hammer is 0.2 to 0.4 meter, and the penetration degree is 2 cm;
the hydraulic hammer is an HDY16 hydraulic hammer, and the mode of redressing the tubular pile is as follows: the lifting hammer is 0.3 to 0.4 meter, and the penetration degree is 2 cm;
the hammering times of the hydraulic hammer are 200-300 times.
9. The construction method convenient for repeatedly driving tubular piles in batches according to claim 7, wherein a fixing ring is arranged on the outer wall of the pile feeder, the fixing ring moves along the pile feeder or is fixed on the pile feeder, and the fixing ring abuts against the top end opening of the steel sleeve, so that the pile feeder partially penetrates into the steel sleeve.
10. The construction method convenient for tubular piles to be redrilled in batches as claimed in claim 1, wherein the steel sleeve comprises: the device comprises an inner cylinder body, an outer cylinder body and a plurality of supporting bodies;
the inner cylinder and the outer cylinder are cylindrical, the diameter of the inner cylinder is smaller than that of the outer cylinder, and the axis of the inner cylinder is coincided with the axis of the outer cylinder and fixed in the outer cylinder;
the supporting bodies are arranged between the inner cylinder body and the outer cylinder body at equal intervals, and two ends of each supporting body are respectively vertical to the inner cylinder body and the outer cylinder body;
an accommodating cavity is formed among the inner cylinder body, the outer cylinder body and the supporting body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210328518.2A CN114575337A (en) | 2022-03-31 | 2022-03-31 | Construction method convenient for repeatedly driving pipe piles in batches |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210328518.2A CN114575337A (en) | 2022-03-31 | 2022-03-31 | Construction method convenient for repeatedly driving pipe piles in batches |
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| CN114575337A true CN114575337A (en) | 2022-06-03 |
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| CN202210328518.2A Pending CN114575337A (en) | 2022-03-31 | 2022-03-31 | Construction method convenient for repeatedly driving pipe piles in batches |
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