CN117364763A - Pile sinking construction process for wharf pile - Google Patents
Pile sinking construction process for wharf pile Download PDFInfo
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- CN117364763A CN117364763A CN202311667957.7A CN202311667957A CN117364763A CN 117364763 A CN117364763 A CN 117364763A CN 202311667957 A CN202311667957 A CN 202311667957A CN 117364763 A CN117364763 A CN 117364763A
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- driving
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- 238000010276 construction Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000008569 process Effects 0.000 title claims abstract description 22
- 239000002689 soil Substances 0.000 claims abstract description 25
- 238000012360 testing method Methods 0.000 claims abstract description 10
- 230000008859 change Effects 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000012876 topography Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 3
- 239000003550 marker Substances 0.000 claims description 3
- 238000012795 verification Methods 0.000 abstract description 3
- 230000000630 rising effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000011179 visual inspection Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/06—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers for observation while placing
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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
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
Abstract
The invention relates to the technical field of pile sinking construction of wharf piles, in particular to a pile sinking construction process of wharf piles, which comprises the following steps: positioning a piling ship to a designated position; checking the position of the pipe pile, installing a piling and pile cap according to a checking result when checking is completed, and lowering the pile so that the pipe pile is sunk onto a seabed silt layer by utilizing dead weight; determining a hammer test mode according to the self-sinking feedback result of the tubular pile; recording a piling process and presuming actual geological conditions of the seabed; and moving the piling ship and selecting corresponding parameters according to the geological conditions of the region to pile. The server is matched with the verification device, the mode of feedback and pipe pile verticality after hammering of the pile hammer is measured, the hammering force of the pile hammer is controlled, the completion degree of pile sinking engineering is judged, unqualified pile sinking construction caused by incomplete exploration of a seafloor soil layer is avoided, and meanwhile the universality of construction of a pile sinking mode in a stratum which is not ascertained on the sea bottom is effectively improved.
Description
Technical Field
The invention relates to the technical field of pile sinking construction of wharf piles, in particular to a pile sinking construction process of wharf piles.
Background
The pile sinking construction is used as an important component of hydraulic operation, has very close relation to geology, topography, climate and hydrologic environment, and has very obvious difference in construction modes at different geographic positions. Chinese patent publication No. CN113529645a discloses an integral sinking pile foundation wharf and a construction method thereof, which uses a plurality of single piles to be connected to each other into an integral pile, so as to overcome the problem of pile body inclination under the condition of surge. Chinese patent publication No. CN102002948A discloses a piling process method for constructing a sheet pile wharf in a shallow water area near shore, which solves the construction problem of piling sheet piles in the shallow water area by using advance piling of positioning piles. Chinese patent publication No. CN111335313a discloses a "pier pile driving process" in which steel pipe piles are connected to each other by using a locker, so that the steel pipe piles are transported into a pile driving construction area by using a land transportation manner, so as to reduce the rental cost of barges.
It can be seen that the above technical solution has the following problems: and the qualified pile sinking construction operation can not be carried out under the condition of unknown submarine topography.
Disclosure of Invention
Therefore, the invention provides a pier pile driving pile for solving the problem that the prior art cannot perform qualified pile driving construction operation under the condition of unknown submarine stratum, so that the pile driving pile is poor in universality.
In order to achieve the above object, the present invention provides a pile sinking construction process for a wharf pile, comprising:
step S1, moving a piling ship and a pile transporting square barge to a designated area, lifting a pipe pile, and positioning the piling ship to a designated position according to preset positioning;
step S2, checking the position of the pipe pile, installing a piling and pile cap according to a checking result when checking is completed, and discharging the pile so that the pipe pile is sunk on a seabed silt layer by utilizing dead weight;
step S3, determining a hammer test mode according to the self-sinking feedback result of the tubular pile;
s4, performing hammer test on the tubular pile, adjusting a hammering drop point according to a feedback result of the hammer test, and formally hammering the tubular pile after the adjustment is completed until all parts at the bottom of the tubular pile enter a hard soil layer, and simultaneously, recording a piling process and presuming the actual geological condition of the seabed;
and S5, removing the alternate driving and the pile cap, moving the pile driving ship and the pile transporting square to the next appointed area, and selecting corresponding parameters according to the geological condition of the area to drive the pile.
Further, the piling ship is provided with 8 anchor cables, wherein 2 anchor cables are in a group, and each group of anchor cables is respectively arranged at four corners of the piling ship and used for connecting corresponding naval anchors;
the anchor cable is provided with an anchor drift marker, the length of the anchor cable is adjusted according to the change of the tide level, and the increase and decrease of the ballast water are adjusted according to the geometric center distance between the anchor drift and the section of the anchor cable.
Further, when checking the tubular pile, measuring the perpendicularity of the tubular pile and the feedback force after hammering, judging the soil layer change at the bottom of the tubular pile according to the perpendicularity of the tubular pile, adjusting the hammering point of the next hammering according to the inclination angle of the tubular pile, and adjusting the power of the piling hammer according to the feedback after hammering.
Further, the soil quality at the bottom of the tubular pile is judged according to the hammering feedback force of the pile hammer, and the power of the pile hammer is secondarily regulated according to a judging result.
Further, for a single pipe pile, if the bottom of the pipe pile is located in a hard soil layer, the pipe pile is judged to enter a ending stage, and the completion condition of the pipe pile is judged by calculating the hammering times and the feedback force.
Further, the concrete position and elevation of the piling ship are calculated, and the position and the posture of the piling ship are adjusted according to the calculated concrete position and elevation of the piling ship.
Further, for a single position, if the position of the piling ship is in an error interval corresponding to the position, if the position of the piling ship does not exceed the error interval, judging that the position of the piling ship should be adjusted by tightening and/or loosening the cable; if the position of the piling ship is not in the error interval of the position, the relocation of the receiving cable is judged.
Further, if the hammering is judged to be carried out to the ending stage, the hammering feedback force of the piling hammer is judged again, and whether the ending stage is finished is determined according to a judging result.
Further, if the inclination angle corresponding to the single hammering and the inclination angle corresponding to the next hammering of the single hammering are inclined to the same side, deviation of the submarine topography is judged, pile sinking operation is stopped, and an alarm is given.
Further, when it is determined that pile sinking is stopped, the motor voltage is controlled to be reduced to stop the pile hammer, and an alarm is given.
Compared with the prior art, the method has the beneficial effects that the server is matched with the verification device to measure the feedback after the pile hammer is hammered and the perpendicularity of the pipe pile, so that the hammering force of the pile hammer is controlled, the completion degree of pile sinking engineering is judged, unqualified pile sinking construction caused by incomplete exploration of a seabed soil layer is avoided, and meanwhile, the universality of construction of a pile sinking mode in a seabed undetermined stratum is effectively improved.
Further, the rising and falling tide is judged by measuring the distance between the anchor float and the rope, so that the problem that elevation change of the piling ship is difficult to detect by visual inspection due to the fact that the rising and falling tide is too strong in continuity is avoided, and meanwhile the universality of construction of a pile sinking mode in a stratum which is not ascertained on the sea bottom is further improved.
Further, through the mode of collecting the inclination change of the tubular pile after hammering each time, the drop point of hammering is adjusted in real time, and the universality of construction of the pile sinking mode in the stratum which is not ascertained on the seabed is further improved while the phenomenon that pile sinking operation is unqualified due to the fact that the tubular pile is inclined due to geological, hydrologic and other reasons is avoided.
Further, by detecting the feedback force of the pile hammer, the soil layer structure at the bottom of the pipe pile is judged, and the defect that the pile stretches into the position due to insufficient survey is avoided, so that the pile sinking quality is influenced, and meanwhile, the universality of construction of a pile sinking mode in a stratum which is not ascertained on the seabed is further improved.
Further, by setting the mode of ending the hammering times, the firmness of the tubular pile finished product is improved while the phenomenon that the tubular pile is unstable due to insufficient hammering times is avoided, so that the universality of construction of the pile sinking mode in a stratum which is not ascertained on the seabed is further improved.
Furthermore, the RTK-GPS system is utilized to measure the position of the ship body, so that the accuracy of pile sinking operation is improved while the measurement error is effectively reduced, and the universality of construction of a pile sinking mode in a submarine undetermined stratum is further improved.
Further, through judging the position of the piling ship, the ship body position is adjusted by tightening the mooring ropes or moving the piling ship, so that the energy consumption is reduced, and meanwhile, the universality of construction of the pile sinking mode in the stratum which is not ascertained on the seabed is further improved.
Further, reset the ending stage which does not meet the requirement in a mode of detecting the hammering feedback force of the ending stage, and the universality of the pile sinking mode in the submarine undetermined stratum is further improved while unqualified pile sinking construction caused by soil layer change is avoided.
Furthermore, by detecting the inclination angle direction of the pipe pile, early warning is carried out on the part with obvious difference in submarine geology, so that the universality of construction of a pile sinking mode in a stratum which is not ascertained on the seabed is further improved.
Further, the shutdown of the pile hammer is gradually completed through the adjustment of the motor voltage, the risk resistance of the pile driving ship is effectively improved while the damage of the pile driving ship caused by power failure and braking is avoided, and therefore the universality of construction of a pile sinking mode in a stratum which is not ascertained on the sea bottom is further improved.
Drawings
FIG. 1 is a flow chart of the construction process of the present invention;
FIG. 2 is a schematic view of a pile driving vessel in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of the operation of a pile driving vessel according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an embodiment of an RTK-GPS positioning;
wherein: 1: a GPS base station A;2: a GPS base station B;3: a GPS base station C;4: pile driving vessel sensor.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1, a flowchart of the present invention is shown, which includes:
step S1, moving a piling ship and a pile transporting square barge to a designated area, lifting a pipe pile, and positioning the piling ship to a designated position according to preset positioning;
step S2, checking the position of the pipe pile, installing a piling and pile cap according to a checking result when checking is completed, and discharging the pile so that the pipe pile is sunk on a seabed silt layer by utilizing dead weight;
step S3, determining a hammer test mode according to the self-sinking feedback result of the tubular pile;
s4, performing hammer test on the tubular pile, adjusting a hammering drop point according to a feedback result of the hammer test, formally hammering the tubular pile after the adjustment is completed until all parts at the bottom of the tubular pile enter a hard soil layer, and simultaneously, recording a piling process and presuming actual geological conditions of the seabed;
and S5, removing the alternate driving and pile caps, moving the pile driving ship and pile transporting square to the next appointed area, and selecting corresponding parameters according to the geological conditions of the area to pile.
Specifically, the piling ship is provided with 8 anchor cables, wherein 2 anchor cables are in a group, and each group of anchor cables is respectively arranged at four corners of the piling ship and used for connecting corresponding naval anchors;
the anchor cable is provided with an anchor drift marker, the length of the anchor cable is adjusted according to the change of the tide level, and the increase and decrease of the ballast water are adjusted according to the geometric center distance between the anchor drift and the section of the anchor cable.
Specifically, when checking the tubular pile, the perpendicularity of the tubular pile and the feedback force after hammering are measured, soil layer change at the bottom of the tubular pile is judged according to the perpendicularity of the tubular pile, and the hammering point of the next hammering is adjusted according to the inclination angle of the tubular pile, and meanwhile, the power of the piling hammer is adjusted according to the feedback after hammering.
Specifically, the soil quality at the bottom of the pipe pile is judged according to the hammering feedback force of the pile hammer, and the power of the pile hammer is secondarily regulated according to a judging result.
Specifically, for a single pipe pile, if the bottom of the pipe pile is positioned in a hard soil layer, the pipe pile is judged to enter a ending stage, and the completion condition of the pipe pile is judged by calculating the hammering times and the feedback force.
Specifically, the specific position and elevation of the piling ship are calculated, and the position and the posture of the piling ship are adjusted according to the calculated specific position and elevation of the piling ship.
Specifically, for a single position, if the position of the piling ship is in an error interval corresponding to the position, if the position of the piling ship does not exceed the error interval, judging that the position of the piling ship should be adjusted by tightening and/or loosening the cable; if the position of the piling ship is not in the error interval of the position, the relocation of the receiving cable is judged.
Specifically, if it is determined that the hammering is performed to the ending stage, the feedback force of the hammering of the piling hammer is determined again, and whether the ending stage is completed is determined according to the determination result.
Specifically, if the inclination angle corresponding to the single hammering and the inclination angle corresponding to the next hammering of the single hammering are both inclined to the same side, it is determined that there is a deviation in the seabed topography, and the pile sinking operation is stopped and an alarm is given.
Specifically, when it is determined that pile sinking is stopped, the motor voltage is controlled to be reduced to stop the pile hammer while giving an alarm.
The server is matched with the verification device to measure the feedback after hammering of the pile hammer and the perpendicularity of the pipe pile, so that the hammering force of the pile hammer is controlled, the completion degree of pile sinking engineering is judged, unqualified pile sinking construction caused by incomplete exploration of a seabed soil layer is avoided, and meanwhile the universality of construction of a pile sinking mode in a seabed unknown stratum is effectively improved.
Referring to fig. 2, a schematic diagram of the anchoring of a pile driving ship according to an embodiment of the present invention is shown:
the piling ship is provided with 8 anchor cables, wherein 2 anchor cables are in one group, and each group of anchor cables are respectively arranged at four corners of the piling ship and are used for connecting corresponding naval anchors; the anchor cable is provided with an anchor drift mark for adjusting the length of the anchor cable and the ballast water according to the change of the tide level, and for the ith anchor cable, i=1, 2,3, … and 8 are set and are in the geometry of the section of the anchor cable from the corresponding anchor driftThe heart distance is recordedAnd the length of the connecting rope of the anchor float and the anchor cable is recorded as +.>The server is provided with a first preset distance +.>A second predetermined distance +.>Wherein 0 </i->＜/>＜/>First preset distance->For a large buoyancy distance, a second preset distance +.>For small buoyancy distance, will->And->And +.>Comparing to determine the distance from the anchor at sea level,
if it is＜/>The server determines that the sea level is rising and at the same time recommends that the anchor line be anchoredTightening and increasing ballast water to make +.>And->Equality, thus making the piling ship relatively stable;
if it is≤/>＜/>The server judges that the piling ship is relatively stable and does not adjust the anchor cable and the ballast water;
if it is≤/>The server decides that the sea level is lowered and at the same time recommends that the anchor line is loosened and the ballast water is reduced so that +.>And->Equality, thereby making the piling ship relatively stable.
The rising and falling tide is judged by measuring the distance between the anchor float and the rope, so that the problem that elevation change of the piling ship is difficult to detect by visual inspection due to the fact that the rising and falling tide is too strong in continuity is avoided, and meanwhile the universality of construction of a pile sinking mode in a stratum which is not detected on the sea bottom is further improved.
Referring to fig. 3, a working schematic diagram of a pile driving ship according to an embodiment of the present invention is shown:
wherein, the calibration device is arranged on the pile frame and used for measuring the perpendicularity of the pipe pile and feedback after hammering, and a first preset inclination angle is arranged in the serverA second predetermined tilt angle +.>For the jth hammering, the included angle between the central line of the tubular pile and the preset angle after the tubular pile is hammered is +.>Wherein 0 </i->＜/>First preset dip->For small error included angle, a second preset inclination angleIs an included angle of the super error,
if it is＜/>The server judges that the hammering is within the error and does not adjust the pile hammer;
if it is≤/>＜/>The server judges the hammering super error and adjusts the perpendicularity of the tubular pile through the hammering point of the next hammering so as to enable the included angle +.>A reduction;
if it is≤/>The server judges that the soil layer at the bottom end of the pipe pile changes, adjusts the hammering point of the next hammering and simultaneously adjusts the power of the pile driving hammer according to feedback after hammering.
By collecting the mode of the inclination change of the pipe pile after each hammering, the drop point of the hammering is adjusted in real time, and the universality of the pile sinking mode for construction in the stratum which is not ascertained on the seabed is further improved while the phenomenon that pile sinking operation is unqualified due to the fact that the pipe pile is inclined due to geological, hydrologic and other reasons is avoided.
Specifically, for the j-th hammer, the feedback after the hammer isThe server is provided with a first preset feedback +.>Second preset feedback->Wherein 0 </i->＜/>First preset feedback->The second preset feedback is the feedback force of the soft soil layerIs the feedback force of the hard soil layer,
if it is＜/>Server determinationThe feedback force is small, and meanwhile, the bottom end of the pipe pile is judged to be positioned on a silt layer, and the power of the pile hammer is reduced so as to control the verticality of the pile hammer;
if it is≤/>＜/>In the feedback force judgment, the server judges that the bottom end of the tubular pile is positioned at the composite layer at the same time, and reduces the power of the piling hammer to enable the pile hammer to be +.>And->The pile hammer is equal to the pile hammer, and is used for controlling the direction during striking and controlling the drop point of the pile hammer so as to prevent the inclination of the pipe pile caused by uneven soil layers;
if it is≤/>The server judges that the feedback dynamics is big, judges simultaneously that the tubular pile bottom is located the hard soil layer this moment, and this tubular pile construction of server judgement enters the ending stage this moment.
The soil layer structure at the bottom of the pipe pile is judged by detecting the feedback force of the pile hammer, so that the defect that the pile stretches into the insufficient position due to insufficient survey is avoided, the pile sinking quality is influenced, and meanwhile, the universality of construction of a pile sinking mode in a stratum which is not ascertained on the seabed is further improved.
Specifically, for the jth pipe pile, when the server determines that the bottom of the pipe pile is located in the hard soil layer at this time according to the inspection device, the server determines that the pipe pile enters the ending stage, and starts counting the number of hammering timesJudging the completion condition of the pipe pile with feedback force, wherein a server is provided with ending hammering times +.>When->=/>And when the tubular pile is finished, the server judges that the tubular pile is finished.
By setting the ending hammering times, the firmness of the tubular pile finished product is improved while the phenomenon that the tubular pile is unstable due to insufficient hammering times is avoided, so that the universality of construction of a pile sinking mode in a stratum which is not ascertained on the seabed is further improved.
FIG. 4 is a schematic diagram of an embodiment of an RTK-GPS positioning according to the present invention;
the piling ship is provided with an RTK-GPS system, and the RTK-GPS system is used for monitoring the position, the direction and the posture of the ship body in real time by matching with a sensor when the piling ship moves; when the GPS system is used for measuring, the GPS sensors fixed on the shore at a plurality of erection points and the GPS sensors erected on the piling ship are used for accurately calculating the specific position and elevation of the piling ship by the relative positions of the sensors, so that the server is guided to adjust the position and the attitude of the piling ship according to the calculated specific position and elevation of the piling ship.
The ship body position is measured by using the RTK-GPS system and the plurality of base stations, so that the accuracy of pile sinking operation is improved while the measurement error is effectively reduced, and the universality of construction of a pile sinking mode in a stratum which is not ascertained on the sea bottom is further improved.
Specifically, when the server judges that the position of the piling ship is wrong according to the GPS system, the position of the piling ship is D from the correct position, a preset minimum offset distance Dalpha is arranged in the server, if D is less than or equal to Dalpha, the server judges that the position of the piling ship should be adjusted by tightening and/or loosening the cable, and if D is more than Dalpha, the server judges that the cable should be retracted for repositioning.
The position of the ship body is adjusted by judging the position of the piling ship and tightening the mooring ropes or moving the piling ship, so that the energy consumption is reduced, and meanwhile, the universality of construction of a pile sinking mode in a stratum which is not ascertained on the sea bottom is further improved.
Specifically, the detection device measures the inclination angles of the jth and (j+1) th hammersAnd +.>All inclined to the same side and all exceed +.>And when the pile sinking operation is stopped, the server judges that the submarine topography has deviation, and simultaneously, the pile sinking operation is stopped and an alarm is given.
Reset the ending stage that does not meet the requirements through detecting the mode of ending stage hammering feedback dynamics, when having avoided leading to pile sinking construction disqualification because of soil layer change, further promoted pile sinking mode and did not visited the universality of stratum construction in the seabed.
Specifically, the detection device measures the inclination angles of the jth and (j+1) th hammersAnd +.>All inclined to the same side and all exceed +.>And when the pile sinking operation is stopped, the server judges that the submarine topography has deviation, and simultaneously, the pile sinking operation is stopped and an alarm is given.
By detecting the inclination angle direction of the pipe pile, early warning is carried out on the part with obvious difference in submarine geology, so that the universality of construction of a pile sinking mode in a submarine undetermined stratum is further improved.
Specifically, when the server determines that pile sinking is stopped, the server controls the motor voltage to be slowly reduced to stop the pile hammer, and simultaneously gives an alarm.
The pile hammer is gradually stopped through the adjustment of the motor voltage, the damage of the pile driving ship caused by power failure and braking is avoided, and meanwhile, the risk resistance of the pile driving ship is effectively improved, so that the universality of construction of a pile sinking mode in a stratum which is not ascertained on the sea bottom is further improved.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The pile sinking construction process for the wharf pile is characterized by comprising the following steps of:
step S1, moving a piling ship and a pile transporting square barge to a designated area, lifting a pipe pile, and positioning the piling ship to a designated position according to preset positioning;
step S2, checking the position of the pipe pile, installing a piling and pile cap according to a checking result when checking is completed, and discharging the pile so that the pipe pile is sunk on a seabed silt layer by utilizing dead weight;
step S3, determining a hammer test mode according to the self-sinking feedback result of the tubular pile;
s4, performing hammer test on the tubular pile, adjusting a hammering drop point according to a feedback result of the hammer test, and formally hammering the tubular pile after the adjustment is completed until all parts at the bottom of the tubular pile enter a hard soil layer, and simultaneously, recording a piling process and presuming the actual geological condition of the seabed;
and S5, removing the alternate driving and the pile cap, moving the pile driving ship and the pile transporting square to the next appointed area, and selecting corresponding parameters according to the geological condition of the area to drive the pile.
2. The pier pile driving construction process according to claim 1, wherein in the step S1, the driving vessel is provided with 8 anchor lines, wherein 2 anchor lines are grouped, and each group of anchor lines is respectively arranged at four corners of the driving vessel for connecting with corresponding naval anchors;
the anchor cable is provided with an anchor drift marker, the length of the anchor cable is adjusted according to the change of the tide level, and the increase and decrease of the ballast water are adjusted according to the geometric center distance between the anchor drift and the section of the anchor cable.
3. The pier pile driving construction process according to claim 1, wherein in the step S2, when the pipe pile is checked, the perpendicularity of the pipe pile and the feedback force after hammering are measured, the soil layer change at the bottom of the pipe pile is judged according to the perpendicularity of the pipe pile, the hammering point of the next hammering is adjusted according to the inclination angle of the pipe pile, and the power of the piling hammer is adjusted according to the feedback after hammering.
4. A pier pile driving construction process according to claim 3, wherein in the step S4, the soil quality at the bottom of the pile is determined according to the hammering feedback force of the pile driving hammer, and the power of the pile driving hammer is secondarily adjusted according to the determination result.
5. The pile-sinking construction process according to claim 4, wherein in the step S4, if the bottom of the pile is located in the hard soil layer, it is determined that the pile enters the ending stage, and the completion of the pile is determined by starting to calculate the number of hammering and the feedback force.
6. The pier pile driving construction process according to claim 1, wherein in the step S1, the specific position and elevation of the driving vessel are calculated, and the position and the attitude of the driving vessel are adjusted according to the calculated specific position and elevation of the driving vessel.
7. The pile-sinking construction process for wharf piles according to claim 6, wherein in the step S1, for a single position, if the position of the pile driving vessel is within an error range corresponding to the single position, if the position of the pile driving vessel does not exceed the error range, it is determined that the position of the pile driving vessel should be adjusted by tightening and/or loosening the cable; if the position of the piling ship is not in the error interval of the position, the relocation of the receiving cable is judged.
8. The pile sinking construction process according to claim 5, wherein in step S4, if it is determined that the hammering is performed to the ending stage, the hammer feedback force is again determined, and whether the ending stage is completed is determined according to the determination result.
9. The pile-sinking construction process according to claim 8, wherein in the step S4, if the inclination angle corresponding to the single hammering and the inclination angle corresponding to the next hammering are both inclined to the same side, it is determined that there is a deviation in the seabed topography, and the pile-sinking operation is stopped and the alarm is given.
10. The pier pile driving construction process according to claim 9, wherein in the step S5, when it is determined that pile driving is stopped, the motor voltage is controlled to be lowered to stop the pile hammer while giving an alarm.
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