CN114108674A - Construction method for steel pipe pile of smart lamp pole foundation of municipal road - Google Patents
Construction method for steel pipe pile of smart lamp pole foundation of municipal road Download PDFInfo
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- CN114108674A CN114108674A CN202111454175.6A CN202111454175A CN114108674A CN 114108674 A CN114108674 A CN 114108674A CN 202111454175 A CN202111454175 A CN 202111454175A CN 114108674 A CN114108674 A CN 114108674A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 171
- 239000010959 steel Substances 0.000 title claims abstract description 171
- 238000010276 construction Methods 0.000 title claims abstract description 72
- 238000005553 drilling Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 31
- 239000004576 sand Substances 0.000 claims abstract description 12
- 239000002689 soil Substances 0.000 claims description 34
- 238000009434 installation Methods 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 5
- 230000035515 penetration Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 description 10
- 238000012545 processing Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 8
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- 238000012937 correction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
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- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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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
- E02D5/22—Piles
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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
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Abstract
The invention provides a construction method of a steel pipe pile of a municipal road intelligent lamp pole foundation, which comprises the following steps: drilling holes by installing a spiral drill through a crawler photovoltaic pile machine to form pile holes; hoisting the steel pipe pile into the pile hole through a truck crane; after the steel pipe pile enters a pile hole, correcting the verticality of the steel pipe pile according to a preset requirement; mounting the steel pipe pile through a crawler photovoltaic pile driver and a vibration hammer pile driver; and (5) pouring yellow sand into the steel pipe pile for filling, and performing pile top treatment. The method can effectively solve the influence of cross collision of municipal engineering pipelines, is quick in construction, improves the construction safety and the construction quality, shortens the construction period, avoids post foundation treatment and saves the cost.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method of a steel pipe pile of a smart lamp pole foundation of a municipal road.
Background
The engineering pile is divided into a concrete pile, a steel pile and a combined material pile according to the material of a pile body, and the steel pipe pile belongs to one kind of the steel pile and has the advantages of light weight and high bearing capacity. The steel pipe pile is widely used in the pile foundation of bridge, dock, house and other foundation construction, and features high bearing capacity. In a conventional steel pipe pile, a pile hole is dug at a preset pile position, an embedded part is arranged in the pile hole, and concrete is poured into the embedded part to form the steel pipe pile. However, when municipal works are carried out in urban areas, since municipal pipelines are complex and cross collision and other situations are easy to occur, rapid construction is difficult to carry out by the method, and the steel pipe piles are not easy to be drilled into the ground, so that the construction efficiency is seriously influenced, and the construction cost is high.
Disclosure of Invention
Therefore, in order to solve the technical problems, a construction method for a foundation steel pipe pile of a smart lamp post of a municipal road is needed.
A construction method of a steel pipe pile of a smart lamp pole foundation of a municipal road comprises the following steps: drilling holes by installing a spiral drill through a crawler photovoltaic pile machine to form pile holes; hoisting the steel pipe pile into the pile hole through a truck crane; after the steel pipe pile enters a pile hole, correcting the verticality of the steel pipe pile according to a preset requirement; mounting the steel pipe pile through a crawler photovoltaic pile driver and a vibration hammer pile driver; and (5) pouring yellow sand into the steel pipe pile for filling, and performing pile top treatment.
Further, before drilling by installing an auger through a crawler photovoltaic pile machine to form a pile hole, the method further comprises the following steps: the raw materials enter a field, and are processed and accepted by the steel pipe pile, and are transported to a construction site; measuring paying-off positioning on a construction site, and determining the position of a street lamp foundation; the drilling machine is in place, the pile position and the working surface elevation are corrected according to the measurement control network, the penetration depth of the drill rod is adjusted according to the corrected elevation data, and the pile length is controlled; the perpendicularity of the front face and the side face of the installed upright post is adjusted by adjusting the supporting leg oil cylinder.
Further, the steel pipe pile is manufactured by processing seamless steel pipes, and when the steel pipe pile is accepted, weld appearance inspection and flaw detection are carried out on the steel pipe pile.
Further, the drilling is carried out through track photovoltaic stake machine installation auger, forms the stake hole, specifically includes: the crawler photovoltaic pile driver is provided with a spiral drill for one-way drilling at a pile position, when a mud layer embraces a drill rod, the drill rod is lifted to the ground, and a drill tip valve is cleaned, debugged and sealed again for drilling; when drilling or penetrating through soft and hard soil, controlling the verticality of the drill rod by two hanging hammers of the frame crane; slowly entering, and when drilling in a miscellaneous fill soil layer or a soft plastic soil layer, lifting and dumping until the current changes in a normal state.
Further, hoist the steel-pipe pile to the stake downthehole through the mobile crane, specifically include: and hoisting the steel pipe pile to a truck crane, hoisting the steel pipe pile to the position right above the pile hole through the truck crane, vertically aligning the steel pipe pile with the pile hole, and slowly delivering the steel pipe pile until the steel pipe pile completely enters the pile hole.
Further, after the steel-pipe pile enters the pile hole, the perpendicularity of the steel-pipe pile is corrected according to preset requirements, and the method specifically comprises the following steps: after the steel pipe pile enters the pile hole, a guide facility is installed at a preset height position away from the base on a pile driver frame, and the frame is adjusted to enable the center of the connecting rod, the center of the guide facility and the pile position to be on the same straight line; adjusting the verticality of the steel pipe according to the two hanging hammers until the verticality meets the preset requirement; starting equipment to enable the steel pipe to slowly enter a shallow surface of a soil layer, stopping sinking, and adjusting the verticality until the verticality meets the preset requirement; and slowly feeding the steel pipe into the soil layer again, stopping sinking, adjusting the verticality, and repeating for several times until the sinking depth of the steel pipe meets the depth requirement.
Further, carry out the steel-pipe pile installation through track photovoltaic pile driver and vibratory hammer pile driver, specifically include: when the pile driving is started, a small-drop-distance light hammer is carried out through a crawler photovoltaic pile driver, so that the steel pipe pile normally sinks into the soil for 1-2 m, and whether the pile tip of the steel pipe pile deviates or not is detected; if the offset does not occur, gradually increasing the drop distance to a preset depth, wherein the maximum drop distance does not exceed 1m in the process of increasing the drop distance; and when the friction force of the soil layer is large, the vibration sinking of the steel pipe pile is carried out by matching the vibration hammer pile driver.
Further, the yellow sand filling in the steel pipe pile is performed to perform pile top treatment, and the method specifically comprises the following steps: filling the interior of each steel pipe pile with yellow sand, and after filling, performing pile top treatment according to the type of the pile top, wherein the pile top comprises a B-type pile head, a D-type pile head, an A-type pile head and a C-type pile head; when B-class and D-class pile heads are treated, graded broken stones are adopted for filling, and the depth is 35 cm; when the A-type pile head is processed, C30 concrete is poured, and the depth is 1.5 m; when the C-type pile head is processed, C30 concrete is poured to the depth of 1.8 m.
Furthermore, the verticality deviation of the steel pipe pile in driving is not more than 0.5%, the pile position allowable deviation is not more than 100mm, and the pile top elevation allowable deviation is-50 to +100 mm.
Compared with the prior art, the invention has the advantages and beneficial effects that:
1. according to the invention, pile hole drilling is carried out through the spiral drill, the truck crane hoists the steel pipe pile into the hole, hole guiding is carried out on the steel pipe pile, the crawler photovoltaic pile driver and the vibration hammer pile driver are utilized to carry out steel pipe pile construction, and finally yellow sand is filled in the steel pipe pile for filling, and pile top treatment is carried out.
2. The construction method adopts the combined equipment of the three-in-one system of the spiral drill, the crawler photovoltaic pile driver and the vibrating hammer pile driver for construction, the used crawler photovoltaic pile driver has the characteristics of convenient movement, accurate pile driving and positioning and the like, the vibrating hammer pile driver is adopted for steel pipe pile construction, and the vibration force generated when the vibrating steel pipe is inserted into the soil body can locally soften the foundation soil strength of the contact surface at the bottom of the pile pipe, so that the steel pipe can be conveniently inserted into the soil layer, the integral quality requirement of the steel pipe pile construction is met, and the road lamp foundation construction can be accelerated on the premise of ensuring the quality safety.
3. The invention adopts the spiral drill to drill, fully solves the problem of hole deviation of the steel pipe pile, has more accurate positioning in the construction of the steel pipe pile and is more suitable for the flow construction in the construction process.
4. The invention adopts the vibratory hammer pile driver to carry out the construction of the steel pipe pile, has small occupied space, avoids various foundation pit problems in rainy season construction, and has less influence by the climate environment.
Drawings
FIG. 1 is a schematic flow chart illustrating a method for constructing a steel pipe pile on a basis of a smart lamp post of a town road in one embodiment;
FIG. 2 is a process flow chart of a construction method of a steel pipe pile of a municipal road intelligent lamp pole foundation in one embodiment;
FIG. 3 is a diagram illustrating the effect of processing on the tops of class B and class D piles in one embodiment;
FIG. 4 is a diagram illustrating the effect of processing on the top of a class A pile according to an embodiment;
fig. 5 is a diagram illustrating the effect of processing the top of the C-type pile in one embodiment.
Detailed Description
In order that the invention may be more clearly understood, the following detailed description of the invention is given with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 and 2, a construction method of a steel pipe pile of a smart lamp pole foundation of a municipal road is provided, which comprises the following steps:
and step S101, installing an auger through a crawler photovoltaic pile driver to drill a hole, and forming a pile hole.
Specifically, an auger is installed on the crawler photovoltaic pile driver, the crawler photovoltaic pile driver is started, and the auger rotates in a single direction to drill holes to form the steel pipe pile holes.
In step S101, the method specifically includes: installing a spiral drill on the crawler photovoltaic pile driver, performing one-way drilling through the spiral drill, lifting the drill rod to the ground when the drill rod is embraced by a slime layer, and performing drilling after the drill tip valve is cleaned, debugged and sealed again; when drilling or penetrating through soft and hard soil, controlling the verticality of the drill rod through a bidirectional hanging hammer of the rack crane; slowly entering, and when drilling in a miscellaneous fill soil layer or a soft plastic soil layer, lifting and dumping until the current changes in a normal state.
Specifically, during drilling, the auger is adopted for drilling, the drill rod generally cannot be reversed or lifted in the drilling process, and when a clay layer is used for holding the drill rod, the drill rod is lifted to the ground to clean, debug and seal a drill tip valve again and then drilling is carried out. When drilling or penetrating soft and hard soil, the drill rod is ensured to be vertical, the verticality can be controlled by a bidirectional hanging hammer falling from a rack, the drill rod slowly enters, and the soil is lifted and discharged when drilling in a mixed filling soil layer containing bricks and ten thousand blocks or a soft and plastic soil layer with large water content until the current changes in a normal working state. In the drilling process, an operator and a commander need to be closely matched, if abnormal conditions such as drill jamming, violent swing of a drill rod, deflection of a drilling machine and the like occur, the operator and the commander should stop rotating in time to find out reasons, and the operator can continue to operate after taking corresponding measures.
Before step S101, the method further includes: the raw materials enter a field, and are processed and accepted by the steel pipe pile, and are transported to a construction site; measuring paying-off positioning on a construction site, and determining the position of a street lamp foundation; the drilling machine is in place, the pile position and the working surface elevation are corrected according to the measurement control network, the penetration depth of the drill rod is adjusted according to the corrected elevation data, and the pile length is controlled; the perpendicularity of the front face and the side face of the installed upright post is adjusted by adjusting the supporting leg oil cylinder.
The steel pipe pile is manufactured by processing seamless steel pipes, and when the steel pipe pile is accepted, weld joint appearance inspection and flaw detection are carried out on the steel pipe pile.
Specifically, the steel pipe pile material can adopt Q235B, and preferably adopts seamless steel pipes; and (4) processing the steel pipe pile, checking and accepting after the processing is finished, checking the appearance of the welding seam, carrying out internal flaw detection on the welding seam after the inspection is qualified, and transporting to a construction site after the inspection and acceptance is qualified.
In the process of processing the steel pipe pile, the allowable deviation of the outer circumference of the steel pipe is +/-0.5% of the circumference, and the measured outer circumference is not more than 10 mm; the allowable deviation of the ovality of the steel pipe is within plus or minus 0.5 percent of the diameter and is not more than 5 mm; the allowable deviation of the flatness of the pipe end is 2 mm; the allowable deviation of the plane inclination of the pipe end is less than 0.5% of the diameter and not more than 4 mm; the thickness of the pipe wall is not less than the design requirement; the bending rise of the total axis is not more than 0.1% of the pile length and not more than 30 mm. Of course, the requirements can be modified appropriately according to engineering requirements in the actual processing process, and the requirements can meet design requirements.
When the paying-off positioning is measured, the pile position and the pile bottom elevation of the foundation are marked clearly according to the requirements of a drawing; the drilling machine is in place, the position of the steel pipe pile and the elevation of the working surface are calibrated according to the measurement control network, the penetration depth of the drill rod is adjusted according to the calibrated elevation data, and the length of the steel pipe pile is well controlled; the perpendicularity of the side face and the side face of the pile machine upright post is adjusted by adjusting the supporting leg oil cylinder.
And S102, hoisting the steel pipe pile into the pile hole through a truck crane.
Specifically, the steel pipe pile is installed on a truck crane, the steel pipe pile is moved through the truck crane to a position right above the corresponding pile hole, and the steel pipe pile is slowly placed into the pile hole.
Wherein, step S102 specifically includes: and hoisting the steel pipe pile to a truck crane, hoisting the steel pipe pile to the position right above the pile hole through the truck crane, vertically aligning the steel pipe pile hole, and slowly delivering the steel pipe pile until the steel pipe completely enters the pile hole.
And S103, after the steel pipe pile enters the pile hole, correcting the verticality of the steel pipe pile according to preset requirements.
Specifically, after the steel pipe pile is placed in the pile hole, the perpendicularity of the steel pipe pile at the moment is corrected according to design requirements, for example, the perpendicularity of the steel pipe pile can be measured by adopting a hanging hammer mode, and the perpendicularity of the steel pipe pile is adjusted according to the measurement result.
Wherein, step S103 specifically includes: after the steel pipe pile enters the pile hole, a guide facility is installed at a preset height position away from the base on a pile driver frame, and the frame is adjusted to enable the center of the connecting rod, the center of the guide facility and the pile position to be on the same straight line; adjusting the verticality of the steel pipe according to the two hanging hammers until the verticality meets the preset requirement; starting equipment to enable the steel pipe to slowly enter a shallow surface of a soil layer, stopping sinking, and adjusting the verticality until the verticality meets the preset requirement; and slowly feeding the steel pipe into the soil layer again, stopping sinking, adjusting the verticality, and repeating for several times until the sinking depth of the steel pipe meets the depth requirement.
Specifically, a position on a machine frame of the pile machine, which is away from a base by a preset height, for example, a position 500mm away from the base, is convenient for guiding the steel pipe pile, a guiding facility is installed, the machine frame is adjusted before construction, so that the center of a connecting rod, the center of the guiding facility and the pile position are on the same straight line, and centering is completed. After centering, simultaneously, adjusting the verticality of the steel pipe by using two hanging hammers until the verticality meets the design requirement, and starting equipment to enable the steel pipe to slowly enter a soil layer by 10 cm. And stopping sinking, adjusting the verticality of the steel pipe again until the verticality meets the design requirement, repeating the steps for many times, and keeping the verticality clock of the steel pipe in the sinking process within the range of the design requirement until the sinking depth of the steel pipe meets the design depth.
And after the steel pipe pile is hoisted into the hole, the verticality is corrected again, when the steel pipe pile is driven to a certain depth and the pile driving quality is good, the steel pipe pile is continuously and greatly driven until the steel pipe pile is 60-80 cm higher than the ground, the hammering is stopped, the verticality of the steel pipe pile is rechecked, and the steps are repeated until the steel pipe pile reaches the designed elevation after the steel pipe pile meets the requirement.
In the construction process, the verticality deviation of the steel pipe pile during driving cannot exceed 0.5%, the allowable deviation of the pile position cannot be larger than 100mm, and if the verticality deviation is found to be too large, correction needs to be carried out in time in the sinking process of all steel pipes. When the steel pipe is not deeply buried, the steel pipe can be pulled out for readjustment and construction; when the steel pipe is deeply buried but the deviation is not large, the deviation can be forcibly corrected through external force on the premise of not influencing the quality of the pile body, so that the verticality of the steel pipe meets the design requirement.
And step S104, mounting the steel pipe pile through the crawler photovoltaic pile driver and the vibration hammer pile driver.
Specifically, when the steel-pipe pile is installed, the spiral drill is dismantled, the crawler photovoltaic pile driver is used for installing the steel-pipe pile, the crawler photovoltaic pile driver has the characteristics of convenience in moving the machine, accuracy in pile driving and positioning and the like, and the vibration force generated when the vibration steel pipe enters a soil body can locally soften the foundation soil strength of the contact surface at the bottom of the pile pipe, so that the soil layer can be smoothly penetrated, and the overall quality of steel-pipe pile construction and the construction condition of adapting to the foundation reinforcement project are met. In the piling process, hole site deviation correction and operation depth control are carried out through instrument panel display.
Wherein, step S104 specifically includes: when the pile driving is started, a small-drop-distance light hammer is carried out through a crawler photovoltaic pile driver, so that the steel pipe pile normally sinks into the soil for 1-2 m, and whether the pile tip of the steel pipe pile deviates or not is detected; if the offset does not occur, gradually increasing the drop distance to a preset depth, wherein the maximum drop distance does not exceed 1m in the process of increasing the drop distance; and when the friction force of the soil layer is large, the vibration sinking of the steel pipe pile is carried out by matching the vibration hammer pile driver.
Specifically, when the piling starts, the crawler photovoltaic pile driver is used for lightly hammering the small drop distance, the small drop distance is controlled to be 0.5-0.8 m, the steel pipe pile is normally sunk into the soil by about 1-2 m, and whether the pile tip of the steel pipe pile deviates or not is detected; if the offset does not occur, the falling distance is gradually increased to a preset depth, and the maximum falling distance does not exceed 1m in the process of increasing the falling distance. At the pile driving in-process, if the pile driving effect that obviously feels crawler pile driver reduces, then it is big to show soil layer frictional force this moment, can carry out the hammering through the vibratory hammer pile driver, sinks with the vibration of crawler photovoltaic pile driver cooperation steel-pipe pile. In the piling process, when abnormal conditions such as abrupt change of penetration degree, sudden inclination and displacement of the pile body or serious resilience, serious crack or breakage of the pile top or the pile body occur, piling is suspended and timely processed.
And in the driving stage, if the deviation of the pile tip of the steel pipe pile is detected, and if the pile position is not correct or inclined, adjusting or pulling out the steel pipe pile to be inserted again, and then driving.
And S105, filling yellow sand into the steel pipe pile for filling, and performing pile top treatment.
Specifically, after the steel pipe pile is driven into a preset depth and the verticality meets a preset requirement, pile top treatment is carried out on the steel pipe pile.
Wherein, step S105 specifically includes: filling the interior of each steel pipe pile with yellow sand, and after filling, performing pile top treatment according to the type of the pile top, wherein the pile top comprises a B-type pile head, a D-type pile head, an A-type pile head and a C-type pile head; when B-class and D-class pile heads are treated, graded broken stones are adopted for filling, and the depth is 35 cm; when the A-type pile head is processed, C30 concrete is poured, and the depth is 1.5 m; when the C-type pile head is processed, C30 concrete is poured to the depth of 1.8 m.
Specifically, the steel pipe is filled with yellow sand, and pile top treatment is carried out according to the type of the pile top, wherein the type of the pile top comprises an A-type pile head, a C-type pile head, a B-type pile head and a D-type pile head.
As shown in fig. 3, the pile heads of the B-type and D-type foundation piles are filled with graded broken stones, and the depth is 35 cm; as shown in fig. 4; the A-type foundation pile head is poured by C30 concrete, the depth is 1.5m, and the A-type foundation pile head is shown in figure 4; the C-type foundation pile head is cast by C30 concrete, and the depth is 1.8m, as shown in figure 5. When the pile is formed and accepted, the horizontal position is controlled by the electronic level ruler.
Wherein, the verticality deviation when the steel pipe pile is driven is not more than 0.5 percent, the pile position allowable deviation is not more than 100mm, and the pile top elevation allowable deviation is-50 to +100 mm.
Specifically, the verticality deviation of the steel pipe pile during driving does not exceed 0.5% of the preset verticality requirement, the allowable deviation of the pile position is not more than 100mm of the preset requirement during drilling, and the allowable deviation of the pile top elevation is-50 to +100mm of the preset height.
In this embodiment, drill through track photovoltaic stake machine installation auger, form the stake hole, hoist the steel-pipe pile to the stake downthehole through the truck crane, after the steel-pipe pile gets into the stake hole, rectify the straightness that hangs down of steel-pipe pile according to predetermineeing the requirement, carry out the steel-pipe pile installation through track photovoltaic pile driver and vibratory hammer pile driver, after the steel-pipe pile installation is accomplished, irritate yellow sand in the steel-pipe pile and fill in the reality, and pile-top is handled, accomplish the steel-pipe pile construction, the problem of steel-pipe pile off-centre bore has fully been solved, it is more accurate to fix a position in the steel-pipe pile construction, the work efficiency is improved, and receive climatic environment's influence less, and the cost is saved.
In one embodiment, the method is successfully applied to street lamp foundation construction in a project of a male-security suburb park, and under the working condition of complex pipelines, the method has obvious application economic benefits.
When the conventional construction of the street lamp adopts a construction scheme of excavating and pouring concrete, the construction is mainly carried out by four steps: mechanically excavating a foundation pit; installing and positioning the steel bars and the embedded parts; pouring concrete; and (5) backfilling and tamping the foundation pit.
When adopting this application auger, track photovoltaic pile driver and vibration to go out pile driver combination and carry out the construction, mainly divide into four processes: a caterpillar photovoltaic piling machine guide hole; hoisting the steel pipe pile; the vibrating hammer pile driver performs vibrating drilling; the economic benefit pair of pile driver deviation correction adjustment and conventional solution is shown in table 1 below.
TABLE 1 economic benefits Table
As can be seen from table 1, the cost of constructing a street light foundation using the conventional scheme in the prior art is about 54000/10 ═ 5400 yuan; by adopting the scheme of the application for construction, the cost of a single street lamp foundation is about 324425/100-3244.25 yuan; namely, by adopting the scheme in the application, the cost saving of each street lamp foundation is 5400-3244.25-2155.75 yuan, and the project of the suburb park in the north of the new male security area has 1310 steel pipe pile foundations in total, so that the cost saving of the project of the suburb park in the north of the new male security area is about 10 multiplied by 2156-2824360 yuan, and therefore, the economic benefit of the project using the method is 2824360 yuan.
The method successfully solves the problems of tight construction period of suburban park projects in the north of the new area of male security, high difficulty in constructing street lamp foundations under the working condition of heavy construction tasks, low construction efficiency and poor construction effect, and generates obvious construction period benefits. The benefits of the construction period are shown in the following table 2:
TABLE 2 schedule benefits Table
As can be seen from table 2 above, all foundations of the project need to be completed by 131d by adopting the conventional scheme, and only 13d is needed for completing all the steel pipe pile foundation construction by adopting the method; the efficiency of constructing the street lamp foundation by the method is 10 times that of conventional construction, and the construction period advantage is obvious.
Simultaneously, this application can carry out line production, and the efficiency of construction is high, need not the excavation, and is less to peripheral construction influence, and is little to the surrounding environment influence, and artifical needs are less in addition, and the pile driver can load through the tractor, removes rapidly.
The present invention is described in further detail with reference to specific embodiments, and the specific embodiments are not to be considered as limited to the description. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (9)
1. A construction method of a steel pipe pile of a smart lamp pole foundation of a municipal road is characterized by comprising the following steps:
drilling holes by installing a spiral drill through a crawler photovoltaic pile machine to form pile holes;
hoisting the steel pipe pile into the pile hole through a truck crane;
after the steel pipe pile enters a pile hole, correcting the verticality of the steel pipe pile according to a preset requirement;
mounting the steel pipe pile through a crawler photovoltaic pile driver and a vibration hammer pile driver;
and (5) pouring yellow sand into the steel pipe pile for filling, and performing pile top treatment.
2. The construction method of the steel pipe pile of the intelligent lamp post foundation of the municipal road as claimed in claim 1, wherein before drilling the pile hole by installing an auger through a caterpillar photovoltaic pile driver, the construction method further comprises:
the raw materials enter a field, and are processed and accepted by the steel pipe pile, and are transported to a construction site;
measuring paying-off positioning on a construction site, and determining the position of a street lamp foundation;
the drilling machine is in place, the pile position and the working surface elevation are corrected according to the measurement control network, the penetration depth of the drill rod is adjusted according to the corrected elevation data, and the pile length is controlled;
the perpendicularity of the front face and the side face of the installed upright post is adjusted by adjusting the supporting leg oil cylinder.
3. The construction method of the steel pipe pile of the intelligent municipal road lamp post foundation is characterized in that the steel pipe pile is made of seamless steel pipes, and when the steel pipe pile is accepted, appearance inspection and flaw detection of welding seams are carried out on the steel pipe pile.
4. The construction method of the steel pipe pile for the smart lamp pole foundation of the municipal road as claimed in claim 2, wherein the pile hole is formed by drilling the holes through a crawler photovoltaic pile driver installation auger, and the construction method specifically comprises the following steps:
the crawler photovoltaic pile driver is provided with a spiral drill for one-way drilling at a pile position, when a mud layer embraces a drill rod, the drill rod is lifted to the ground, and a drill tip valve is cleaned, debugged and sealed again for drilling;
when drilling or penetrating through soft and hard soil, controlling the verticality of the drill rod by two hanging hammers of the frame crane;
slowly entering, and when drilling in a miscellaneous fill soil layer or a soft plastic soil layer, lifting and dumping until the current changes in a normal state.
5. The construction method of the steel pipe pile of the smart lamp pole foundation of the municipal road according to claim 4, wherein the steel pipe pile is hoisted into the pile hole through a truck crane, and the construction method specifically comprises the following steps:
and hoisting the steel pipe pile to a truck crane, hoisting the steel pipe pile to the position above the pile hole through the truck crane, vertically aligning the steel pipe pile to the pile hole, and slowly delivering the steel pipe pile until the steel pipe pile completely enters the pile hole.
6. The construction method of the steel pipe pile of the intelligent municipal road lamp post foundation as claimed in claim 5, wherein after the steel pipe pile enters the pile hole, the perpendicularity of the steel pipe pile is corrected according to preset requirements, and the construction method specifically comprises the following steps:
after the steel pipe pile enters the pile hole, a guide facility is installed at a preset height position away from the base on a pile driver frame, and the frame is adjusted to enable the center of the connecting rod, the center of the guide facility and the pile position to be on the same straight line;
adjusting the verticality of the steel pipe according to the two hanging hammers until the verticality meets the preset requirement;
starting equipment to enable the steel pipe to slowly enter a shallow surface of a soil layer, stopping sinking, and adjusting the verticality until the verticality meets the preset requirement;
and slowly feeding the steel pipe into the soil layer again, stopping sinking, adjusting the verticality, and repeating for several times until the sinking depth of the steel pipe meets the depth requirement.
7. The construction method of the steel pipe pile for the smart lamp pole foundation of the municipal road according to claim 1, characterized in that the steel pipe pile is installed through a crawler photovoltaic pile driver and a vibration hammer pile driver, and the construction method specifically comprises the following steps:
when the pile driving is started, a small-drop-distance light hammer is carried out through a crawler photovoltaic pile driver, so that the steel pipe pile normally sinks into the soil for 1-2 m, and whether the pile tip of the steel pipe pile deviates or not is detected;
if the offset does not occur, gradually increasing the drop distance to a preset depth, wherein the maximum drop distance does not exceed 1m in the process of increasing the drop distance;
and when the friction force of the soil layer is large, the vibration sinking of the steel pipe pile is carried out by matching the vibration hammer pile driver.
8. The construction method of the steel pipe pile of the intelligent municipal road lamp post foundation as claimed in claim 1, wherein the steel pipe pile is filled with yellow sand to be filled and filled, and pile top treatment is carried out, specifically comprising:
filling the interior of each steel pipe pile with yellow sand, and after filling, performing pile top treatment according to the type of the pile top, wherein the pile top comprises a B-type pile head, a D-type pile head, an A-type pile head and a C-type pile head;
when B-class and D-class pile heads are treated, graded broken stones are adopted, and the depth is 35 cm;
when the A-type pile head is processed, C30 concrete is poured, and the depth is 1.5 m;
when the C-type pile head is processed, C30 concrete is poured to the depth of 1.8 m.
9. The construction method of the intelligent lamp pole foundation steel pipe pile for the municipal road according to claim 1, wherein the verticality deviation of the steel pipe pile when the steel pipe pile is driven in is not more than 0.5%, the pile position allowable deviation is not more than 100mm, and the pile top elevation allowable deviation is-50 to +100 mm.
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| CN202111454175.6A CN114108674A (en) | 2021-12-01 | 2021-12-01 | Construction method for steel pipe pile of smart lamp pole foundation of municipal road |
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| CN202111454175.6A CN114108674A (en) | 2021-12-01 | 2021-12-01 | Construction method for steel pipe pile of smart lamp pole foundation of municipal road |
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| CN113026801A (en) * | 2021-03-29 | 2021-06-25 | 中建八局第四建设有限公司 | Construction method for reinforcing steel pipe pile of construction elevator foundation |
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