CN117702727A - Cast-in-place pile construction technology - Google Patents
Cast-in-place pile construction technology Download PDFInfo
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- CN117702727A CN117702727A CN202410167752.0A CN202410167752A CN117702727A CN 117702727 A CN117702727 A CN 117702727A CN 202410167752 A CN202410167752 A CN 202410167752A CN 117702727 A CN117702727 A CN 117702727A
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Abstract
The invention relates to a cast-in-place pile construction process, which comprises the following steps of S1, opening a cast-in-place hole at a selected position according to engineering design, and inserting a reinforcement cage into the cast-in-place hole; step S2, starting a pouring device to pour concrete into the reinforcement cage in a segmented manner, and acquiring initial pouring speed of the concrete, actual pressure born by a pushing block, actual environment temperature of a construction site and actual temperature change of the concrete in any segmented pouring process; step S3, correspondingly adjusting the fixing device, the vibrating device and the initial pouring speed in the segmented concrete according to the acquired data; and S4, pouring the next sectional concrete if the pouring of the current sectional concrete meets the preset standard, and repeating the steps S2-S3 until the pouring of each sectional concrete in the cast-in-place pile meets the preset standard, thereby completing the construction. According to the invention, when the steel reinforcement cage is deviated in the construction process, automatic adjustment can be performed, so that the pouring of concrete in each section of the cast-in-place pile meets the preset standard.
Description
Technical Field
The invention relates to the field of buildings, in particular to a cast-in-place pile construction process.
Background
In engineering construction, the bored concrete pile is because intensity is big, bearing capacity is strong to advantages such as cost is low, economical and practical are widely used, but the steel reinforcement cage is very easy to take place the skew in the bored concrete pile work progress, lead to the bored concrete pile skew, and the concrete often can produce bubble, crack because of reasons such as construction temperature, inside and outside difference in temperature, reduce intensity, in traditional construction, can only vibrate the concrete through traditional vibrating rod by the workman, but can't vibrate the concrete of every position according to actual conditions, make the concrete difference in temperature of each part of pouring keep in certain scope before the initial setting, avoid producing the crack, and correct in real time to the steel reinforcement cage in the pouring process, thereby guarantee the construction effect.
Chinese patent CN110904956B discloses a construction process of a cast-in-place pile, which is technically characterized in that a pile opening locating frame is annular, and a plurality of locating rods are arranged at the outer edge, and a balancing weight for fixing the locating rods on the pile opening is arranged at the tail end or the middle part of each locating rod, so that a reinforcement cage is suspended section by section.
The current bored concrete pile construction process can not correct the steel reinforcement cage in real time, and can not vibrate the concrete according to actual conditions so as to reduce concrete cracks.
Disclosure of Invention
Therefore, the invention provides a cast-in-place pile construction process, which can solve the technical problem that the driving force of the pushing device and the vibrating power of the vibrating rod cannot be adjusted according to the environmental temperature, the temperature change of the cast-in-place concrete and the temperature difference of each area of the cast-in-place concrete.
In order to achieve the above object, the present invention provides a construction process of a cast-in-place pile, comprising:
step S1, forming pouring holes at selected positions according to engineering design, and inserting the reinforcement cage into the pouring holes;
step S2, starting a pouring device to pour concrete into the reinforcement cage in sections, and acquiring initial pouring speed of the concrete, actual pressure born by a pushing block, actual environmental temperature of a construction site and actual temperature change of the concrete by an adjusting unit in any section pouring process;
step S3, the adjusting unit correspondingly adjusts the fixing device, the vibrating device and the initial pouring speed in the segmented concrete according to the acquired data;
s4, if the casting of the current sectional concrete meets the preset standard, casting the next sectional concrete by the adjusting unit, repeating the steps S2-S3 until the casting of each sectional concrete in the cast-in-place pile meets the preset standard, and completing construction;
the adjusting unit is respectively connected with the pouring device, the fixing device and the vibrating device, acquires initial preset pushing force of each pushing mechanism in the fixing device according to the initial pouring speed of concrete, performs segmented pouring on the reinforcement cage, judges whether the reinforcement hook is deviated or not and determines the area of a concrete deviation position of the reinforcement cage according to the actual pressure received by the pushing block in any segment, adjusts the initial preset pushing force according to the condition that the reinforcement cage is deviated, the vibrating device is used for vibrating the concrete, and adjusts initial actual vibrating power of the vibrating device according to the actual environment temperature, and adjusts the initial pouring speed according to the actual temperature change of the concrete, so that the segmented concrete meets preset standards;
the fixing device comprises a plurality of pushing mechanisms, the pushing mechanisms are uniformly distributed in an annular space formed by the pouring pipe and the steel reinforcement cage and used for fixing the steel reinforcement cage, the number of the pushing mechanisms is even, the positions of the pushing mechanisms correspond to each other in pairs, the corresponding two pushing mechanisms are a fixed group, the fixing device comprises a first fixed group and a second fixed group, the first fixed group comprises a first pushing mechanism and a third pushing mechanism, the position of the first fixed group corresponds to a first direction, the second fixed group comprises a second pushing mechanism and a fourth pushing mechanism, and the position of the second fixed group corresponds to a second direction.
Further, the adjusting unit can determine the initial preset pushing force of each pushing mechanism according to the obtained initial pouring speed of the concrete, if the initial pouring speed is smaller than or equal to a preset first standard initial pouring speed, the adjusting unit determines that the pushing mechanism fixes the reinforcement cage with the first initial preset pushing force, if the initial pouring speed is larger than the first standard initial pouring speed and smaller than a preset second standard initial pouring speed, the adjusting unit determines that the pushing mechanism fixes the reinforcement cage with the second initial preset pushing force, and if the initial pouring speed is larger than or equal to the second standard initial pouring speed, the adjusting unit determines that the pushing mechanism fixes the reinforcement cage with the third initial preset pushing force.
Further, the adjusting unit can judge the position deviation of the reinforcement cage according to the calculated first difference absolute value and second difference absolute value, if the position deviation of the reinforcement cage is judged, the adjusting unit sends an adjusting signal,
wherein the first absolute value of the difference is the absolute value of the difference of the actual pressure born by each pushing block in the first fixed group,
the second absolute value of the difference is the absolute value of the difference of the actual pressure born by each pushing block in the second fixed group.
Further, the adjusting unit can determine the specific position of the steel reinforcement cage with position deviation according to the first difference absolute value and the second difference absolute value,
if the absolute value of the first difference value is larger than or equal to the preset pressure difference value, the adjusting unit judges that the first direction of the reinforcement cage is shifted,
and if the absolute value of the second difference value is greater than or equal to a preset pressure difference value, the adjusting unit judges that the second direction of the reinforcement cage is shifted.
Further, the adjusting unit divides the offset area of the reinforcement cage into four first-stage areas, including a first area, a second area, a third area and a fourth area, and for any direction, the adjusting unit can determine the first-stage area where the position offset of the reinforcement cage falls according to the magnitude of the actual pressure between the pushing blocks in the fixed group corresponding to the direction.
Further, based on the first-stage area where the offset position of the reinforcement cage is determined to fall, the adjusting unit can determine a second-stage area where the offset position of the reinforcement cage falls according to the magnitude of the actual pressure between the pushing blocks in the other fixed group,
and the area formed by equally dividing the primary area into two equal parts is the secondary area.
Further, based on the secondary region in which the offset position of the reinforcement cage is determined to fall, the adjusting unit can determine a tertiary region in which the reinforcement cage is offset according to the calculated third difference absolute value,
wherein the third absolute value of the difference is the absolute value of the difference between the first absolute value of the difference and the second absolute value of the difference;
and equally dividing the secondary region into two equal parts to form a region which is the tertiary region.
Further, a first power parameter is set in the adjusting unit, the adjusting unit can determine a standard pushing force corresponding to the actual pressure according to the actual pressure of the pushing block with the position deviation, so as to judge the first power parameter according to the standard pushing force and the initial preset pushing force, and if the absolute value of the difference value of the pushing force is larger than a preset parameter adjustment evaluation value, the adjusting unit corrects the first power parameter and calculates the actual pushing force;
the absolute value of the impulse force difference is the absolute value of the difference between the initial preset impulse force and the standard impulse force.
Further, the adjusting unit can calculate the actual vibrating power according to the obtained judging result of the actual environment temperature of the concrete and the preset environment temperature and the initial actual vibrating power of the vibrating rod to construct,
and if the actual ambient temperature is less than or equal to the preset ambient temperature, the adjusting unit determines to adjust the initial actual vibrating power.
Further, a period detection duration is set in the adjusting unit, the adjusting unit calculates an actual temperature change every time a period detection duration is passed, the actual temperature change and a preset temperature change are judged, and if the actual temperature change is greater than a preset first preset temperature change and less than a preset second preset temperature change, the adjusting unit determines that the pouring device is constructed at the initial pouring speed.
Compared with the prior art, the method has the advantages that when the pouring device is used for pouring concrete, the initial pouring speed is higher, the impact force on the reinforcement cage is higher, in order to prevent the reinforcement cage from shifting during pouring, the pouring effect is influenced, therefore, the adjusting unit selects initial preset pushing forces of all pushing mechanisms according to the initial pouring speed of the concrete of the pouring device, obtains actual pressures of all pushing mechanisms in the pouring process, when the actual pressure difference value of the pushing blocks at corresponding positions is larger than the preset pressure difference value evaluation value, the reinforcement cage is illustrated to be inclined, in order to correct the shifting of the reinforcement cage, the adjusting unit adjusts the initial preset pushing forces to obtain actual pushing forces, in the adjusting process, whether the first power parameters are adjusted is judged according to the absolute value of the pushing force difference value between the standard pushing force determined by the actual pressure of the pushing blocks and the initial preset pushing force, and if the absolute value of the pushing force difference value is larger than the parameter adjusting evaluation value set in the adjusting unit, the actual pushing force of the corresponding pushing mechanism is increased through increasing the first power parameters, and correction is realized when the reinforcement cage shifting is timely.
In particular, the fixing when pouring is carried out on different sections of the reinforcement cage is achieved through the telescopic length of the vertical telescopic rod controlled by the B-type motor, after pouring and fixing of concrete in one section are completed, the vibrating device stretches into the reinforcement cage, the stretching length of the vibrating telescopic rod controlled by the C-type motor reaches the designated horizontal height to vibrate in the section, and after vibration is completed, the vibrating telescopic rod controlled by the C-type motor drives the vibrating rod to slowly stretch out of the reinforcement cage from the concrete, so that gaps are left in the concrete due to the fact that the vibrating rod stretches out too fast are prevented, and after pouring and fixing of concrete in the next section are completed, the vibrating rod stretches into the section concrete again to vibrate.
In particular, the lower the ambient temperature is, the more easily the temperature difference between the inside and the outside of the poured concrete becomes, and when the temperature difference between the inside and the outside is large, the crack will occur in the concrete, so when the ambient temperature obtained by the adjusting unit is less than or equal to the preset temperature, the adjusting unit reduces the temperature difference between the inner layer and the outer layer of the poured concrete by increasing the vibrating power of each vibrating rod.
In particular, the adjustment unit compares the obtained actual temperature change of the poured concrete with the preset temperature change, and adjusts the initial pouring speed of the concrete of the pouring device, wherein when the actual temperature change obtained by the adjustment unit is smaller than or equal to the first preset temperature change, the temperature of the poured concrete is indicated not to be greatly changed, the quality of the poured pile is not affected, in order to improve the construction efficiency, the adjustment unit judges that the initial pouring speed of the concrete of the pouring device is increased, when the actual temperature change obtained by the adjustment unit is larger than or equal to the second preset temperature change, the temperature change of the poured concrete is indicated to be too large, cracks are easily generated, even if the vibration device vibrates, the vibration device cannot be compensated, so that the adjustment unit reduces the initial pouring speed of the concrete, the speed of the poured concrete is smaller, the smaller the mass of the poured concrete in unit time is, the lower the hydration heat of the concrete is, and when the difference between the temperature of the poured concrete and the ambient temperature is smaller, the temperature change is smaller, so that the probability of occurrence of cracks is reduced.
Drawings
FIG. 1 is a flow chart of a construction process of a cast-in-place pile according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a construction system of a cast-in-place pile according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a vibrating device according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a bored pile construction system according to an embodiment of the present invention;
the drawings include: the device comprises a pushing block 1, a pressure sensor 2, a horizontal telescopic rod 3, a class A motor 4, a vertical telescopic rod 5, a class B motor 6, a pouring pipe 7, a reinforcement cage 8, a vibrating rod 9, a class C motor 10, a vibrating telescopic rod 11 and a class D motor 12.
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 to 4, fig. 1 is a flow chart of a construction process of a cast-in-place pile according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a construction system of a cast-in-place pile according to an embodiment of the present invention; FIG. 3 is a schematic diagram of a vibrating device according to an embodiment of the present invention; fig. 4 is a sectional view of a bored pile construction system according to an embodiment of the present invention.
The embodiment of the invention provides a construction process of a filling pile, which comprises the following steps of,
step S1, forming pouring holes at selected positions according to engineering design, and inserting the reinforcement cage into the pouring holes;
step S2, starting a pouring device to pour concrete into the reinforcement cage in a segmented manner, and acquiring initial pouring speed of the concrete, actual pressure born by a pushing block, actual environment temperature of a construction site and actual temperature change of the concrete in any segmented pouring process;
step S3, correspondingly adjusting the fixing device, the vibrating device and the initial pouring speed in the segmented concrete according to the acquired data;
s4, if the casting of the current sectional concrete meets the preset standard, casting the next sectional concrete, and repeating the steps S2-S3 until the casting of each sectional concrete in the cast-in-place pile meets the preset standard, and completing construction;
the method comprises the steps of determining initial preset pushing force of a fixing device according to the initial pouring speed of obtained concrete, detecting the actual pressure received by each pushing block through a pressure sensor to judge whether the steel reinforcement cage is shifted in position, determining the actual shifting position of the steel reinforcement cage if the steel reinforcement cage is shifted in position, correspondingly adjusting the initial preset pushing force of the corresponding pushing block according to the shifted position, and judging whether the initial actual vibrating power of the vibrating device and the initial pouring speed are correspondingly adjusted according to the obtained actual environment temperature and the actual temperature change of the concrete.
With continued reference to fig. 2, this embodiment provides a bored pile construction system comprising,
the pouring device comprises a pouring pipe 7 which is arranged in the reinforcement cage 8 and is used for pouring concrete into the reinforcement cage 8 through the pouring pipe 7;
the fixing device comprises a plurality of pushing mechanisms, wherein the pushing mechanisms are uniformly distributed in an annular space formed by the pouring pipe 7 and the reinforcement cage 8, and the number of the pushing mechanisms is even and used for fixing the reinforcement cage 8 to prevent the reinforcement cage 8 from being subjected to position deviation;
the vibrating device is used for vibrating the poured concrete, and each time the pouring of the concrete in one section is completed, the vibrating device vibrates the concrete in the section;
and the adjusting unit is respectively connected with the pouring device, the fixing device and the vibrating device.
The number of pushing mechanisms n=4 in the present embodiment includes a first pushing mechanism, a second pushing mechanism, a third pushing mechanism, and a fourth pushing mechanism.
Specifically, in the present embodiment, for the i-th pushing mechanism, i=1, 2,3,4, including,
the ith pushing block 1 is in sliding connection with the inner wall of the reinforcement cage 8 and is used for fixing the reinforcement cage 8;
the ith pressure sensor 2 is fixedly connected with the ith pushing block 1 and is used for detecting the pressure on the ith pushing block 1 in real time;
an ith horizontal telescopic rod 3, one end of which is fixedly connected with the ith pressure sensor 2 and used for fixing the reinforcement cage 8;
one end of the iA motor 4 is fixedly connected with the i horizontal telescopic rod 3, and the other end of the iA motor is in sliding connection with the outer wall of the pouring pipe 7 and is used for controlling the telescopic length of the i horizontal telescopic rod 3;
one end of an ith vertical telescopic rod 5 is fixedly connected with the ith horizontal telescopic rod 3 and used for controlling the horizontal heights of the ith pushing block 1, the ith pressure sensor 2 and the iA motor 4;
the iB motor 6 is fixedly connected with the other end of the i vertical telescopic rod 5 and used for controlling the telescopic length of the i vertical telescopic rod 5;
the vibrating device comprises a vibrating device body and a vibrating device body,
a vibrating bar 9 for vibrating the concrete in the pouring pipe 7;
a C-type motor 10 fixedly connected with the vibrating rod 9 for controlling the vibrating power of the vibrating rod 9;
one end of a vibrating telescopic rod 11 is fixedly connected with the vibrating rod 9 and used for controlling the vibrating rod 9 to vibrate concrete at different positions;
and the D-type motor 12 is fixedly connected with the other end of the vibrating telescopic rod 11 and is used for controlling the telescopic length of the vibrating telescopic rod 11.
According to the concrete pouring and fixing device, the B-type motor is used for controlling the telescopic length of the vertical telescopic rod, fixing when pouring is carried out on different sections of the reinforcement cage is achieved, after pouring and fixing of concrete in each section are completed, the vibrating device stretches into the reinforcement cage, the C-type motor is used for controlling the telescopic length of the vibrating telescopic rod to reach a specified horizontal height to vibrate in the section, after vibration is completed, the C-type motor is used for controlling the vibrating telescopic rod to drive the vibrating rod to slowly stretch out of the reinforcement cage from the concrete, gaps are prevented from being left in the concrete due to the fact that the vibrating rod stretches out too fast, and the vibrating rod stretches into the section concrete again to vibrate until pouring and fixing of concrete in the next section are completed.
Specifically, for the cast-in-place pile construction process of the embodiment of the invention, the implementation process is as follows:
a first pressure sensor connected to the first thrust block detects in real time a first actual pressure F1 to which said first thrust block is subjected,
a second pressure sensor connected to the second pusher block detects in real time a second actual pressure F2 to which said second pusher block is subjected,
a third pressure sensor connected to the third thrust block detects in real time a third actual pressure F3 to which said third thrust block is subjected,
a fourth pressure sensor connected to the fourth pusher block detects in real time a fourth actual pressure F4 to which said fourth pusher block is subjected,
the first pushing block and the third pushing block are located at corresponding positions, the first pushing block and the third pushing block form a first fixed group at a first position, the second pushing block and the fourth pushing block are located at corresponding positions, and the second pushing block and the fourth pushing block form a second fixed group at a second position.
The adjusting unit obtains initial preset pushing force of the pushing mechanism according to the initial pouring speed of concrete, when the reinforcement cage 8 is poured in sections, whether the reinforcement hooks 8 deviate or not is judged in any section according to actual pressure received by the pushing blocks 1, the initial preset pushing force is adjusted according to the condition that the reinforcement cage 8 deviates, and when the concrete is vibrated by the vibrating device, the initial actual vibrating power of each vibrating rod 9 is adjusted according to the actual environment temperature by the adjusting unit, the initial pouring speed is adjusted according to the actual temperature change of the concrete, so that the concrete pouring of the sections meets the preset standard.
Specifically, in the present embodiment, in the step S2, the adjustment unit determines an initial preset pushing force of each pushing mechanism according to the initial casting speed V of the obtained concrete,
when V is less than or equal to V1, the adjusting unit selects a first initial preset pushing force D1 as the pushing force of each pushing mechanism;
when V1 is smaller than V2, the adjusting unit selects a second initial preset pushing force D2 as the pushing force of each pushing mechanism;
when V is more than or equal to V2, the adjusting unit selects a third initial preset pushing force D3 as the pushing force of each pushing mechanism;
the first standard initial pouring speed V1, the second standard initial pouring speed V2, the first initial preset pushing force D1, the second initial preset pushing force D2 and the third initial preset pushing force D3 are set in the adjusting unit.
Specifically, in this embodiment, when the reinforcement cage is concreted in any section, the adjusting unit calculates a first difference absolute value S1, s1= |f1-f3| according to the first actual pressure F1 detected by the first pressure sensor and the third actual pressure F3 detected by the third pressure sensor,
calculating a second difference absolute value S2, S2= |F2-F4| according to a second actual pressure F2 detected by the second pressure sensor and a fourth actual pressure F4 detected by the fourth pressure sensor,
if S1 is more than or equal to S0, determining that the first position of the reinforcement cage 8 at the section is shifted, and sending an adjusting signal by the adjusting unit;
if S1 is less than S0, judging that the first position of the reinforcement cage 8 at the section is not shifted;
if S2 is more than or equal to S0, determining that the second direction of the reinforcement cage 8 at the section is shifted, and sending an adjusting signal by the adjusting unit;
if S2 is less than S0, judging that the second direction of the reinforcement cage 8 at the section is not subjected to position deviation;
wherein S0 is an evaluation value of the pressure difference set in the adjusting unit.
Specifically, the adjusting unit in this embodiment determines the first-stage area where the offset position of the reinforcement cage 8 falls according to the actual pressure detected by each pressure sensor 2,
if S1 is more than or equal to S0 and F1 is more than F3, judging that the offset position of the reinforcement cage 8 falls in the first area;
if S1 is more than or equal to S0 and F1 is less than F3, judging that the offset position of the reinforcement cage 8 falls in a third area;
if S2 is more than or equal to S0 and F2 is more than F4, judging that the offset position of the reinforcement cage 8 falls in the second area;
if S2 is more than or equal to S0 and F2 is less than F4, judging that the offset position of the reinforcement cage 8 falls in a fourth area;
the first pushing block is offset to the fourth pushing block by 45 degrees from the first orientation to the first-fourth orientation to form a first one-to-one area,
the first pushing block is offset to the second pushing block by 45 degrees from the first orientation to a first-second orientation to form a first two-dimensional area,
wherein the first sub-region and the first sub-region constitute the first region,
the second pushing block is offset to the first pushing block by 45 degrees from the second orientation to the first-second orientation, and the formed area is a second first area,
the second pushing block is offset to the third pushing block by 45 degrees from the second direction to the second-third direction to form a region which is a second region,
wherein the second first region and the second region constitute the second region,
the third pushing block is offset to the second pushing block by 45 degrees from the first orientation to the second-third orientation to form a region which is a third second region,
the third pushing block is offset to the fourth pushing block by 45 degrees from the first orientation to a third-fourth orientation to form a third first area,
wherein the third first region and the third second region constitute the third region,
the fourth pushing block is offset to the third pushing block by 45 degrees from the second orientation to the third-fourth orientation to form a region which is a fourth second region,
the fourth pushing block is offset to the first pushing block by 45 degrees from the second orientation to the first-fourth orientation to form a fourth area,
wherein the fourth first region and the fourth second region constitute the fourth region.
Specifically, in this embodiment, when the offset position falls within the j-th region, j=1, 2,3,4,
if Fk is larger than Fk+2, the adjusting unit judges that the secondary area where the offset position of the reinforcement cage falls is a j 2-th area;
if Fk is smaller than Fk+2, the adjusting unit judges that the secondary area where the offset position of the reinforcement cage falls is a j 1-th area;
if fk=fk+2, the adjustment unit determines that the offset of the reinforcement cage 8 occurs in the a-th orientation;
wherein when j=1 or j=3, k=2 and a=1,
when j=2 or j=4, k=1 and a=2.
In this embodiment, when the offset position falls into the first area, the adjustment unit compares the second actual pressure detected by the second pressure sensor with the fourth actual pressure detected by the fourth pressure sensor, if the second actual pressure is greater than the fourth actual pressure, it is determined that the offset position of the reinforcement cage 8 falls into the first second area, if the second actual pressure is less than the fourth actual pressure, it is determined that the offset position of the reinforcement cage 8 falls into the first area, and if the second actual pressure is equal to the fourth actual pressure, it is determined that the offset of the reinforcement cage 8 occurs in the first direction;
when the offset position falls into the second area, the adjustment unit compares the first actual pressure detected by the first pressure sensor with the third actual pressure detected by the third pressure sensor, if the first actual pressure is greater than the third actual pressure, the offset position of the reinforcement cage 8 is determined to fall into the second area, if the first actual pressure is less than the third actual pressure, the offset position of the reinforcement cage 8 is determined to fall into the second area, and if the first actual pressure is equal to the third actual pressure, the offset of the reinforcement cage 8 is determined to occur in the second direction.
Specifically, in this embodiment, the area formed by the first pushing block that is offset from the first azimuth to the fourth pushing block by 22.5 ° to the first angular bisector azimuth of the first one-to-one area is the first one-to-one area;
the first pushing block is offset to the fourth pushing block by 22.5 degrees by taking the first angular bisector direction as a starting point, and the area formed by the first pushing block and the fourth pushing block is a first area and a second area;
wherein the first one-to-one area and the first one-to-two area form the first one-to-one area;
the first pushing block is offset to the second pushing block by 22.5 degrees by taking the first azimuth as a starting point, and a region formed by a second angular bisector azimuth of the first two regions is a first two-region;
the first pushing block is offset to the second pushing block by 22.5 degrees by taking the second angular bisector direction as a starting point, and a region formed by the first pushing block and the second pushing block is a first second region;
wherein the first second region and the first second region constitute the first second region;
the second pushing block is offset to the first pushing block by 22.5 degrees from the second direction to the third bisector direction of the second first area, the formed area is a second one-to-one area,
the second pusher block is offset from the first pusher block by 22.5 deg. from the third angular bisector orientation to the first-second orientation to form a region of a second two-component region,
wherein the second one-to-one region and the second two-to-one region form the second first region;
the second pushing block is offset to the third pushing block by 22.5 degrees from the second direction to a fourth angular bisector direction of the second area, the area formed by the second pushing block is a second first area,
the second pushing block is offset to the third pushing block by 22.5 degrees from the fourth angular bisector orientation to the second-third orientation to form a second two-region,
wherein the second first region and the second region form the second region;
the third pushing block is offset to the second pushing block by 22.5 degrees from the first direction to a fifth bisector direction of the third second region,
the third pushing block is offset to the second pushing block by 22.5 degrees from the fifth bisector direction to the second-third direction, and the formed area is a third second two area,
wherein the third second first region and the third second region form the third second region;
the third pushing block is offset to the fourth pushing block by 22.5 degrees from the first direction to a third one-to-one area formed by a sixth angular bisector direction of the third first area,
the third pushing block is offset to the fourth pushing block by 22.5 degrees from the sixth angular bisector orientation to the third-fourth orientation to form a third two-zone,
wherein the third one-to-one region and the third two-to-one region form the third one region;
the fourth pushing block is offset to the third pushing block by 22.5 degrees from the second direction to a seventh angular bisector direction of the fourth second region,
the fourth pushing block is offset to the third pushing block by 22.5 degrees from the seventh angular bisector direction to the third-fourth direction, and the formed area is a fourth second area,
wherein the fourth second first region and the fourth second region form the fourth second region;
the fourth pushing block is offset to the first pushing block by 22.5 degrees from the second direction to the fourth first direction, the area formed by the orientation of the eighth angle bisector of the fourth first area is a fourth one-to-one area,
the fourth pushing block is offset to the first pushing block by 22.5 degrees from the orientation of the eighth angle bisector to the first-fourth orientation to form a fourth two-two area,
wherein the fourth one-to-one region and the fourth two-to-one region constitute the fourth one region.
Specifically, in this embodiment, when the offset position falls in the jb region, b=1, 2, the adjustment unit calculates a third difference absolute value S3, s3= |s1-s2| from the first difference absolute value S1 and the second difference absolute value S2,
if S3 is less than or equal to S30, judging the tertiary area where the offset position of the reinforcement cage 8 falls to be a jb 2-th area,
if S3 is more than S30, judging the tertiary area where the offset position of the reinforcement cage 8 falls as a jb 1-th area,
wherein S30 is an absolute value evaluation value of the difference value set in the adjustment unit.
In this embodiment, when the offset position falls within the third first area, the adjustment unit calculates a third absolute value of the difference, compares the third absolute value of the difference with the evaluation value of the absolute value of the difference, and if the third absolute value of the difference is less than or equal to the evaluation value of the absolute value of the difference, determines that the offset position of the reinforcement cage 8 falls within a third second area,
if the third difference absolute value is larger than the difference absolute value evaluation value, the deviation position of the reinforcement cage 8 is judged to be in the third one-to-one area.
Specifically, in this embodiment, for the ith pushing mechanism, when the adjusting unit sends the adjusting signal, the iA-class motor 4 adjusts the d-th initial preset pushing force Dd corresponding to the ith pushing mechanism, d=1, 2,3 to obtain an actual pushing force Di',
Di’=[1+Sf×e]×Dd，
where Sf is the f-th absolute value of the difference, f=1, 2, e is the first power parameter of the f-th absolute value of the difference to the actual driving force Di'.
Specifically, in this embodiment, for the ith pushing mechanism, the adjusting unit determines a standard pushing force di″ under the ith actual pressure Fi detected by the ith pressure sensor, calculates a pushing force difference absolute value S4, s4= |dd-di| according to the obtained d-th initial preset pushing force Dd and the standard pushing force di″, adjusts the first power parameter e, determines a first actual power parameter,
if S4 is less than or equal to S40, the adjusting unit judges that the first power parameter e does not need to be adjusted;
if S4 is more than S40, the adjusting unit judges that the first power parameter e needs to be adjusted;
wherein S40 adjusts the evaluation value for the parameter set in the adjustment unit.
In this embodiment, when the pouring device is pouring concrete, the greater the initial pouring speed is, the greater the impact force on the reinforcement cage is, in order to prevent the reinforcement cage from being deviated during pouring, and affect the pouring effect, therefore, the adjusting unit selects the initial preset pushing force of each pushing mechanism according to the initial pouring speed of the concrete of the pouring device, obtains the actual pressure of each pushing block in each pushing mechanism during pouring, when the actual pressure difference value received by the pushing block at the corresponding position is greater than the preset pressure difference value, it indicates that the reinforcement cage is inclined, in order to correct the deviation of the reinforcement cage, the adjusting unit adjusts the initial preset pushing force to obtain the actual pushing force, in the adjusting process, judges whether to adjust the first power parameter according to the absolute value of the pushing force between the standard pushing force determined by the actual pressure received by the pushing block and the initial preset pushing force, and if the absolute value of the pushing force is greater than the parameter adjustment evaluation value set in the adjusting unit, increases the actual pushing force of the corresponding pushing mechanism by increasing the first power parameter, so as to correct the actual pushing force when the reinforcement cage is deviated.
Specifically, in this embodiment, a preset environmental temperature T is preset in the adjusting unit, and the obtained actual environmental temperature T is compared with the preset environmental temperature T to adjust the initial actual vibrating power Pi of each vibrating rod 9 in the vibrating device,
when T is less than or equal to T, the adjusting unit judges to increase the initial actual vibrating power Pi of each vibrating rod 9 in the vibrating device to obtain actual vibrating power P1i, setting,
P1i=Pi×（1+|T-t|/T）；
when T > T, the adjustment unit does not adjust the initial actual vibrating power Pi of each vibrating rod 9 in the vibrating device.
The lower the ambient temperature is, the more easily the temperature difference between the inside and the outside of the poured concrete becomes, and when the temperature difference between the inside and the outside is large, the crack will occur in the concrete, so when the ambient temperature obtained by the adjusting unit is less than or equal to the preset temperature, the adjusting unit reduces the temperature difference between the inner layer and the outer layer of the poured concrete by increasing the initial actual vibrating power of each vibrating rod 9.
Specifically, in this embodiment, the adjusting unit takes a fixed time period T0 as a detection period, obtains an actual temperature change Δt and a preset temperature change Δt of the concrete, and adjusts the initial casting speed of the casting device according to the actual temperature change Δt and the preset temperature change Δt,
when Deltat is less than or equal to Deltat 1, the adjusting unit judges to increase the initial pouring speed of the pouring device;
when Δt1 < <Δt2, the adjusting unit does not adjust the initial casting speed of the casting apparatus;
when Deltat is not less than Deltat 2, the adjusting unit judges to reduce the initial pouring speed of the pouring device;
wherein, the preset temperature change DeltaT in the adjusting unit comprises a first preset temperature change DeltaT 1 and a second preset temperature change DeltaT 2.
Specifically, in this embodiment, when the actual temperature change Δt obtained by the adjusting unit is smaller than or equal to the first preset temperature change Δt1, the adjusting unit determines to increase the initial casting speed v of the casting device to v1, v1=v× (1+|Δt1- Δt|/Δt1), and when the actual temperature change Δt obtained by the adjusting unit is greater than or equal to the second preset temperature change Δt2, the adjusting unit determines to decrease the initial casting speed v of the casting device to v2, v2=v× (1+|Δt2- Δt|/Δt2).
In this embodiment, the adjusting unit compares the obtained actual temperature change of the poured concrete with the preset temperature change, and adjusts the initial pouring speed of the concrete of the pouring device, where when the actual temperature change obtained by the adjusting unit is smaller than or equal to the first preset temperature change, it is indicated that the temperature of the poured concrete does not change greatly, and the quality of the poured pile is not affected.
In the embodiment, the calculation formulas are used for intuitively reflecting the adjustment relation, such as positive correlation and negative correlation, among the values, and the parameter values of the non-specific limiting values are positive on the premise of no special description.
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 changes or substitutions for related technical features can be made by those skilled in the art without departing from the principles of the present invention, and the technical solutions after such changes or substitutions will fall within the scope of the present invention
Inside.
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. All within the spirit and principle of the present invention
Any modification, equivalent replacement, improvement, etc. should be included in the scope of the present invention.
Claims (10)
1. A construction process of a cast-in-place pile is characterized by comprising the following steps of,
forming pouring holes at positions selected based on engineering design, and inserting a reinforcement cage into the pouring holes to start a pouring device to perform sectional pouring of concrete;
the fixing device is used for fixing the reinforcement cages in different sections through a plurality of pushing mechanisms;
based on the obtained initial pouring speed, the adjusting unit determines initial preset pushing force of each pushing mechanism according to the set standard initial pouring speed;
the pressure sensors in the pushing mechanisms can detect the actual pressure on the corresponding pushing blocks in real time;
for any pushing block, the adjusting unit determines the position state of the reinforcement cage at the position according to the actual pressure on the pushing block and the actual pressure on the pushing block at the position which is in the same position with the pushing block, or sends out an adjusting signal;
for the position where the reinforcement cage is deviated, the adjusting unit determines a first-stage area, a second-stage area and a third-stage area where the deviation position of the reinforcement cage falls one by one according to the actual pressure on each pushing block at the position;
based on the adjustment signal sent by the adjustment unit, the class A motor determines an actual pushing force according to the initial preset pushing force corresponding to the class A motor;
determining the actual vibrating power of the vibrating device and the actual initial pouring speed of the pouring device according to the actual environmental temperatures acquired at a plurality of detection moments based on the preset environmental temperatures set in the adjusting unit;
the pushing mechanisms are uniformly distributed in the annular space formed by the pouring pipe and the reinforcement cage, the number of the pushing mechanisms is even, and the pressure born by the pushing block can be regulated by the A-type motor in the pushing mechanism.
2. The construction process of the bored pile according to claim 1, wherein,
the adjusting unit can divide the positions of the pushing mechanisms according to the fixed group category, wherein the positions comprise a first position and a second position,
the two corresponding pushing mechanisms are one fixed group, and the fixed group comprises a first fixed group and a second fixed group, wherein the first fixed group comprises a first pushing mechanism and a third pushing mechanism, the position of the first pushing mechanism corresponds to the first position, and the second fixed group comprises a second pushing mechanism and a fourth pushing mechanism, and the position of the second pushing mechanism corresponds to the second position.
3. The construction process of the bored pile according to claim 2, wherein,
the pressure difference evaluation value is set in the adjusting unit,
each of the pressure sensors in each of the fixed groups acquires the actual pressure of each of the push blocks,
and the adjusting unit is used for determining the position state of the reinforcement cage at each azimuth position or sending out an adjusting signal according to the actual pressure values and the pressure difference evaluation values.
4. A construction process for a bored pile according to claim 3, wherein,
based on the azimuth position where the reinforcement cage is deviated, the adjusting unit can determine the primary area where the deviation position of the reinforcement cage falls according to the magnitude relation between the actual pressures of the pushing blocks at the azimuth position;
the first-stage area is a plane where each pushing mechanism is located and evenly divided into four parts, and comprises a first area, a second area, a third area and a fourth area.
5. The construction process of the bored pile according to claim 4, wherein,
based on the fact that the position of the steel reinforcement cage, which is deviated, falls into a j-th area, j=1, 2,3 and 4, the adjusting unit determines the secondary area where the position of the steel reinforcement cage, which is deviated, falls according to the k-th actual pressure and the (k+2) -th actual pressure;
wherein when j=1 or j=3, k=2; when j=2 or j=4, k=1;
the second-level area is used for uniformly and octatically dividing the plane where each pushing mechanism is located.
6. The construction process of the bored pile according to claim 5, wherein,
the adjusting unit is internally provided with a difference absolute value evaluation value;
the adjusting unit determines the three-level region where the offset position of the reinforcement cage falls according to a third difference absolute value and the difference absolute value evaluation value;
the third absolute value of the difference is the absolute value of the difference between the absolute value of the actual pressure difference between the pushing blocks in the first fixed group and the absolute value of the actual pressure difference between the pushing blocks in the second fixed group;
the three-level area is used for uniformly sixteen equal division of the plane where each pushing mechanism is located.
7. The construction process of the bored pile according to claim 1, wherein,
the A-type motor can determine the actual pushing force received on the pushing block according to the adjusting signal sent by the adjusting unit, the initial preset pushing force determined by the adjusting unit and the first power parameter set in the adjusting unit.
8. The construction process of the bored pile according to claim 7, wherein,
parameter adjustment evaluation values are set in the adjustment unit;
based on the actual pressure detected by the pressure sensor, the adjusting unit determines a standard pushing force corresponding to the actual pressure;
the adjusting unit can be used for determining the value of the first actual power parameter according to the absolute value of the driving force difference value and the parameter adjusting evaluation value;
the absolute value of the impulse force difference is the absolute value of the difference between the initial preset impulse force and the standard impulse force.
9. The construction process of the bored pile according to claim 1, wherein,
the preset environmental temperature is set in the adjusting unit;
based on the obtained actual ambient temperature of the concrete, the adjustment unit is capable of determining the actual vibrating power according to the preset ambient temperature in combination with the initial actual vibrating power of the vibrating device.
10. The construction process of the bored pile according to claim 9, wherein,
the adjusting unit is internally provided with a period detection duration and a preset temperature change,
the adjusting unit calculates actual temperature change according to the actual environmental temperature acquired by the period detection duration, and determines the actual initial pouring speed of the pouring device by combining the preset temperature change and the initial pouring speed.
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