CN117513326B - Construction structure and construction method for large-diameter prefabricated pipe pile under complex geology - Google Patents
Construction structure and construction method for large-diameter prefabricated pipe pile under complex geology Download PDFInfo
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- CN117513326B CN117513326B CN202311240498.4A CN202311240498A CN117513326B CN 117513326 B CN117513326 B CN 117513326B CN 202311240498 A CN202311240498 A CN 202311240498A CN 117513326 B CN117513326 B CN 117513326B
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- 238000010276 construction Methods 0.000 title claims abstract description 49
- 238000004062 sedimentation Methods 0.000 claims abstract description 112
- 239000002002 slurry Substances 0.000 claims abstract description 55
- 239000000523 sample Substances 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000013049 sediment Substances 0.000 claims description 35
- 238000005553 drilling Methods 0.000 claims description 13
- 238000009825 accumulation Methods 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 7
- 230000000630 rising effect Effects 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 description 23
- 239000010959 steel Substances 0.000 description 23
- 238000009434 installation Methods 0.000 description 14
- 238000004140 cleaning Methods 0.000 description 9
- 239000002689 soil Substances 0.000 description 5
- 101100194816 Caenorhabditis elegans rig-3 gene Proteins 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000003068 static effect 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
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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
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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
- E02D13/08—Removing obstacles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/296—Acoustic waves
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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- Civil Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
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Abstract
The utility model relates to the technical field of precast tubular pile construction, in particular to a construction structure and a construction method of a large-diameter precast tubular pile under complex geology, wherein the structure comprises a second slurry tank, a plurality of sedimentation nets are arranged in the second slurry tank, a sonar probe is also arranged, the sonar probe is connected with an alarm, the horizontal cross section of the second slurry tank is kept unchanged along the vertical direction, a movable bottom plate is arranged in the second slurry tank, the horizontal cross section of the movable bottom plate is consistent with that of the second slurry tank, a lifting device is connected between the movable bottom plate and the sedimentation nets, and the sedimentation nets drive the movable bottom plate to lift through the lifting device in the process of lifting and leaving the second slurry tank.
Description
Technical Field
The utility model relates to the technical field of precast tubular pile construction, in particular to a construction structure and a construction method of a large-diameter precast tubular pile under complex geology.
Background
If the geological structure is complex, when the traditional hammering method or the static pressure method is used for constructing the large-diameter prefabricated pipe pile, the conditions of pile breakage, pile deflection and the like can occur, on one hand, the engineering progress can be dragged down, and on the other hand, the engineering cost can be increased. In order to avoid the occurrence of the above situation as much as possible, in the prior art, a large-diameter prefabricated pipe pile may be constructed by an implantation method.
The construction device for implanting the precast tubular pile into the complex geology comprises a slurry tank, wherein a diaphragm plate is arranged in the middle of the slurry tank, and the slurry tank is divided into a first slurry tank and a second slurry tank; a mud pump disposed in the first mud pit; the steel pile casing is embedded in the soil, and a pile casing hole is formed in the upper part of the side wall of the steel pile casing and is communicated with a concealed pipe; the rotary drilling rig is provided with a hollow drill rod, the bottom end of the drill rod is connected with a drill bit, and the bottom end of the drill bit is provided with an opening; the outer side wall of the drill rod is communicated with the slurry pump through a slurry pump pipe; and the steel sleeve is arranged inside the top end of the steel casing. The utility model provides a construction device for implanting a precast tubular pile into complex geology, which effectively overcomes the construction difficulty of the precast tubular pile under complex geology conditions, ensures the construction quality of implanting the precast tubular pile into the complex geology, and improves the construction efficiency.
In the construction device for implanting the precast tubular pile into the complex geology, the second slurry tank is further provided with the sedimentation net for enabling sediment in the slurry to be left on a net sheet of the sedimentation net, after more sediment is accumulated, the sedimentation net can be lifted out of the second slurry tank, sediment on the sedimentation net is cleaned, and then the sedimentation net is placed into the second slurry tank, so that the sediment quantity in the slurry tank is improved, and the lubricating effect of the slurry on a drill bit is improved. Although the construction device for implanting the prefabricated pipe pile into complex geology can meet the requirement that the large-diameter prefabricated pipe pile is constructed in complex geology, the construction device still has the following defects:
1. when the sedimentation net is lifted to clean the sediment, the construction is stopped, otherwise, the sediment is accumulated at the bottom of the second mud pit, so that the construction speed is influenced;
2. in the second mud pit, a component for detecting the sediment accumulation condition on the sedimentation net is absent, and judgment is needed by naked eyes, but the mud pit is turbid, so that the sediment accumulation condition on the sedimentation net is inconvenient to judge, and the sediment on the sedimentation net is difficult to clean in time;
3. along with the continuous clearance of sediment, the water level in first mud pond and the second mud pond can continuously descend, has the risk that influences mud thick liquid and circulate to influence construction quality.
Disclosure of Invention
In order to solve the defects in the background art, the application provides a construction structure and a construction method of a large-diameter prefabricated pipe pile under complex geology.
In a first aspect, the utility model provides a construction structure of a large-diameter prefabricated pipe pile under complex geology, which adopts the following technical scheme:
the construction structure of the large-diameter prefabricated pipe pile under the complex geology comprises a second slurry tank, wherein a plurality of sedimentation nets are arranged in the second slurry tank along the vertical direction; a sonar probe is arranged in the second mud pit, and the sonar probe is connected with an alarm; the horizontal cross section along the second mud pit keeps unchanged along the vertical direction, be provided with movable bottom plate in the second mud pit, movable bottom plate's horizontal cross section with the horizontal cross section of second mud pit is unanimous, movable bottom plate with a plurality of be connected with hoisting device between the subsidence net subside the net at the in-process of rising and leaving the second mud pit, subsidence net passes through hoisting device drives movable bottom plate is in rise in the second mud pit.
Preferably, the opposite ends of the movable bottom plate are provided with placing frames, the inner walls of the two placing frames are provided with a plurality of placing blocks along the vertical direction, and the two placing blocks which are opposite and located between the same heights are used for placing the same sedimentation net.
Preferably, the number of the sedimentation nets is three, the three sedimentation nets are a first sedimentation net, a second sedimentation net and a third sedimentation net in sequence from top to bottom, the number of the placement blocks on each placement frame is four, and the third sedimentation net, the second sedimentation net and the first sedimentation net are placed from bottom to top from the lowest placement block; a through hole for sliding the placing block is formed between the inner wall and the outer wall of the placing frame, a spring is connected between the placing block and the inner wall of the placing frame, and after the placing block moves inwards, the spring enables the placing block to have a trend of moving outwards; the left and right inner walls of the second mud pit are provided with sliding grooves, the sliding grooves are located at the uppermost part and above the placing blocks, and when the placing frame is lifted, the placing blocks can sequentially spring into the sliding grooves under the action of the springs.
Preferably, the sonar probe is further connected with a host and a display, the host is used for processing the monitoring result of the sonar probe, the display is used for displaying the monitoring result of the sonar probe, and the sonar probe is connected with the alarm through the host.
Preferably, the rear side of second mud pit is provided with the installation pole, the one end of installation pole stretches into the top at second mud pit center, the sonar probe is installed this end of installation pole, the outside concave dilatation chamber that is equipped with in rear side of second mud pit, the installation pole is kept away from the one end of sonar probe articulates in the dilatation intracavity the in-process that subsides the net and rise, the installation pole can be followed subside the rise of net and put up.
Preferably, the expansion cavity is provided with an upper stop block in the upper swinging direction of the mounting rod, one surface of the upper stop block, which faces the mounting rod, is an inclined surface, the upper stop block enables the upper swinging angle of the mounting rod to be lower than 90 degrees, the expansion cavity is provided with a lower stop block in the lower swinging direction of the mounting rod, and the lower stop block enables the mounting rod to swing to the horizontal direction after automatically swinging.
Preferably, the through hole on the placing frame is concave, the bottom of the placing block is provided with a mounting groove, and the spring is arranged in the mounting groove and is used for elastically connecting the placing block with the placing frame.
Preferably, a positioning column is arranged at the top of the placement block, positioning holes are correspondingly formed in the sedimentation net, and the positioning column is vertically spliced with the positioning holes.
Preferably, the top of the chute penetrates through the top of the second mud pit.
In a second aspect, the utility model provides a construction method of a large-diameter prefabricated pipe pile under complex geology, which adopts the following technical scheme:
the construction method of the large-diameter prefabricated pipe pile under the complex geology utilizes the construction structure of the large-diameter prefabricated pipe pile under the complex geology to carry out construction, and comprises the following steps:
s1: drilling holes;
s2: circulating slurry liquid;
s3: pouring concrete;
s4: implanting a large-diameter prefabricated pipe pile;
in S2, a movable bottom plate, a plurality of sedimentation nets and a sonar probe are arranged in the second mud pit, when the sonar probe monitors that sediment accumulation on the sedimentation nets is more, an alarm is given, and then the uppermost sedimentation net is lifted by utilizing a lifting appliance, and the sedimentation net drives the movable bottom plate to be lifted by a certain height at the same time so as to compensate the water level lowered due to sediment cleaning.
The beneficial effects of the utility model are as follows:
1. through the plurality of vertically arranged sedimentation nets, the next sedimentation net can immediately replace the action of the lifted sedimentation net after the uppermost sedimentation net is lifted, so that sediment in the second slurry pond is accumulated on the next sedimentation net without stopping the construction process to avoid sediment accumulation at the bottom of the pond, thereby avoiding influencing the construction speed due to the cleaning of the sediment;
2. after the sonar probe is arranged, sediment accumulation conditions on the sedimentation net can be conveniently judged, in addition, when the sonar probe monitors that more sediment is accumulated on the sedimentation net, the alarm is controlled to give an alarm, so that constructors can be reminded of timely lifting and cleaning the sedimentation net at the uppermost position;
3. when more sediment is accumulated on the sedimentation net, the lifting appliance lifts the sedimentation net, the first sedimentation net is separated from the lapped placing block upwards in the lifting process, then the placing block above the first sedimentation net is propped upwards, the placing rack and the movable bottom plate are driven to lift together until the placing block propped by the sedimentation net is sprung into the chute under the action of the spring, at the moment, the sedimentation net is continuously lifted independently, and the placing block sprung into the chute is finally lapped at the lower end of the chute, so that the height of the placing rack and the movable bottom plate in the second slurry tank is increased to compensate the water level lowered due to the cleaning of the sediment, the mud slurry circulation is prevented from being influenced, and the construction quality is prevented from being influenced;
4. in the process that the sedimentation net was lifted, the sonar probe on installation pole and the installation pole can dodge the sedimentation net voluntarily.
Drawings
FIG. 1 is an overall block diagram of a second mud pit in an embodiment of the present application;
FIG. 2 is a cross-sectional view of a second mud pit in an embodiment of the present application;
FIG. 3 is a partial block diagram of a second mud pit in an embodiment of the present application;
FIG. 4 is an exploded view of the structure between the placement frame and the placement block in an embodiment of the present application;
FIG. 5 is a schematic diagram of a large diameter precast tubular pile construction under complex geology for drilling in an embodiment of the present application;
FIG. 6 is a schematic illustration of tubular pile implantation of a large diameter precast tubular pile construction under complex geology in an embodiment of the present application;
reference numerals illustrate: 11. a first mud pit; 111. a slurry pump; 12. a second slurry tank; 13. a mud through hole; 14. a hidden pipe; 2. a steel pile casing; 21. a steel sleeve; 3. a rotary drilling rig; 31. a drill bit; 41. a first sedimentation net; 42. a second sedimentation net; 43. a third sedimentation net; 5. a capacity expansion cavity; 51. an upper stop block; 52. a lower stop block; 6. a sonar probe; 61. a mounting rod; 71. a movable bottom plate; 72. a placing rack; 73. placing a block; 74. a through hole; 75. a spring; 76. a chute; 81. positioning columns; 82. and positioning holes.
Detailed Description
The utility model will be further described with reference to figures 1-6 and examples.
The embodiment discloses a construction structure of a large-diameter prefabricated pipe pile under complex geology.
Referring to fig. 5 and 6, the construction structure of the large-diameter precast tubular pile under the complex geology includes a mud pit, a mud pump 111, a steel casing 2, a rotary drilling rig 3 and a steel sleeve 21. The mud pit is divided into a first mud pit 11 and a second mud pit 12, and a mud through hole 13 is arranged between the first mud pit 11 and the second mud pit 12 and is used for communicating the first mud pit 11 with the second mud pit 12. A slurry pump 111 is provided in the first slurry tank 11 for pumping out slurry in the slurry tank. The steel casing 2 is buried in the soil and is provided with a casing hole at the upper part of the side wall thereof, the casing hole is communicated with the concealed pipe 14, and the other end of the concealed pipe 14 is communicated with the second mud pit 12, so that the steel casing 2 is communicated with the second mud pit 12 through the concealed pipe 14. The rotary drilling rig 3 is provided with a hollow drill rod, the drill rod is used for extending into the steel casing 2, the bottom end of the drill rod is connected with a drill bit 31, an opening is formed in the bottom end of the drill bit 31, the outer side wall of the drill rod is communicated with the mud pump 111 through a mud pump 111 pipe, a circulating waterway is formed between the mud pit and the inside of the steel casing 2, and mud slurry is circulated between the mud pit and the steel casing 2. The steel sleeve 21 is arranged inside the top end of the steel pile casing 2, and the steel sleeve 21 is used for providing lateral supporting force for the prefabricated pipe pile.
Referring to fig. 1 to 3, a plurality of sedimentation nets are disposed in the second mud pit 12 at intervals from top to bottom, the sedimentation nets include a net frame and net sheets (net sheets are not shown in the figure) disposed in the net frame, in this embodiment, the number of sedimentation nets is three, and the three sedimentation nets are a first sedimentation net 41, a second sedimentation net 42 and a third sedimentation net 43 in this order from top to bottom, in other embodiments, the number of sedimentation nets can be adjusted according to actual construction requirements. In the construction process, the sediment of the second mud pit 12 is firstly accumulated on the uppermost first sedimentation net 41, when the sediment accumulation of the first sedimentation net 41 is more, in order to avoid the sediment affecting the lubrication effect of the mud slurry on the drill bit 31, the first sedimentation net 41 is lifted by using a lifting appliance and cleaned after the lifting, and the second sedimentation net 42 can replace the action of the first sedimentation net 41 immediately after the first sedimentation net 41 is lifted, so that the sediment in the second mud pit 12 is accumulated on the second sedimentation net 42, and the construction process is not required to be stopped to avoid the sediment accumulation at the bottom of the pit, thereby avoiding the influence on the construction speed due to the cleaning of the sediment.
Referring to fig. 1, a sonar probe 6 is further disposed above the second mud pit 12, the height of the sonar probe 6 needs to ensure that the sonar probe 6 can be immersed in mud slurry in the second mud pit 12, the sonar probe 6 faces the bottom of the second mud pit 12 and is responsible for transmitting and receiving acoustic signals, the sonar probe 6 is further connected with a host and a display, the host is used for processing monitoring results of the sonar probe 6, the display is used for displaying monitoring results of the sonar probe 6 and feeding back to constructors in time, and accordingly sediment accumulation conditions on a sedimentation net can be conveniently judged after the sonar probe 6 is disposed. Further, the host computer of connecting sonar probe 6 still is connected with the alarm, aim at: when the sonar probe 6 monitors that more sediment is accumulated on the sedimentation net, the alarm is controlled to alarm so as to remind constructors of lifting and cleaning the sedimentation net at the uppermost position in time.
Referring to fig. 1 to 3, the bottom of the second mud pit 12 is provided with a movable bottom plate 71, and the horizontal cross section of the movable bottom plate 71 coincides with the bottom surface of the second mud pit 12, so that the movable bottom plate 71 can completely cover the bottom surface of the second mud pit 12. In this embodiment, one end of the second mud pit 12, which is communicated with the concealed pipe 14, is taken as a right end, one end of the second mud pit 12, which is communicated with the first mud pit 11, is taken as a left end, both the left end and the right end of the top surface of the movable bottom plate 71 are provided with placing racks 72, one surface of the placing racks 72, which faces the center of the second mud pit 12, is taken as an inner wall of the placing racks 72, a plurality of placing blocks 73 are arranged on the inner walls of the two placing racks 72 along the vertical direction, the placing blocks 73 which are opposite and are located at the same height are used for placing the same sedimentation net, and finally the first sedimentation net 41, the second sedimentation net 42 and the third sedimentation net 43 are placed between the two placing racks 72 in sequence from top to bottom. It should be noted that the movable floor 71, the placement frame 72, and the plurality of sedimentation nets may be appropriately weighted to ensure that the movable floor 71 and the placement frame 72 are heavy enough to sink into the bottom of the second mud pit 12 and that the sedimentation nets are heavy enough to sink into overlapping placement blocks 73 of the placement frame 72.
Referring to fig. 1 to 4, the number of the placement blocks 73 on each placement frame 72 is four such that the number of the placement blocks 73 on each placement frame 72 is one more than the number of the sedimentation nets, and the third sedimentation net 43, the second sedimentation net 42, and the first sedimentation net 41 are placed from bottom to top starting from the lowermost placement block 73 such that the uppermost placement block 73 is left empty. Further, a through hole 74 for sliding the placement block 73 is formed between the inner wall and the outer wall of the placement frame 72, so that the placement block 73 can be moved along the inner wall and the outer wall of the placement frame 72 by external force when being unobstructed. A spring 75 is connected between the placement block 73 and the inner wall of the placement frame 72, and when the placement block 73 moves inward, the spring 75 causes the placement block 73 to have a tendency to move outward. In the present utility model, since the outer wall of the placement frame 72 is attached to the inner wall of the second mud pit 12, all placement blocks 73 on the placement frame 72 are moved inward after the placement frame 72 is submerged. Further, the left and right inner walls of the second mud pit 12 are provided with sliding grooves 76, and the sliding grooves 76 need to be set as follows: after the placement frame 72 is sunk, the chute 76 is located above the uppermost placement block 73 of the placement frame 72, when the placement frame 72 is lifted, the placement blocks 73 can sequentially spring into the chute 76 under the action of the springs 75, and it should be noted that after the placement blocks 73 spring into the chute 76, the placement blocks 73 need to be ensured to leave the position right above the sedimentation net, i.e. the placement blocks 73 cannot block the lifting of the sedimentation net after spring into the chute 76. By the above design, taking the lifting of the first sedimentation net 41 as an example, the process is as follows: after the first sedimentation net 41 accumulates more sediment, the lifting appliance lifts the first sedimentation net 41, the first sedimentation net 41 is firstly separated from the lapped placing block 73 in the lifting process, then is propped upwards to contact the placing block 73 above the first sedimentation net 41, and drives the placing rack 72 and the movable bottom plate 71 to lift up together until the placing block 73 propped by the first sedimentation net 41 is sprung into the sliding groove 76 under the action of the spring 75, at this time, the first sedimentation net 41 continues to lift up independently, the placing block 73 sprung into the sliding groove 76 is finally lapped at the lower end of the sliding groove 76, so that the height of the placing rack 72 and the movable bottom plate 71 in the second slurry tank 12 is increased to compensate the water level which is reduced due to the cleaning of the sediment, the slurry circulation is avoided being influenced, and the construction quality is avoided being influenced. Similarly, after the second lifting net and the third lifting net are lifted, the movable bottom plate 71 is lifted to a certain height so as to compensate the water level lowered due to the cleaning of the sediment.
Yet another function of the spring 75 in this construction is: when the placement block 73 is below the chute 76, the spring 75 is able to press the inner end of the placement block 73 against the inner wall of the second mud pit 12, thereby improving the stability of the placement frame 72 and the movable floor 71 submerged in the second mud pit 12.
Referring to fig. 4, the through hole 74 on the placing frame 72 is concave, the bottom of the placing block 73 is provided with a mounting groove, the spring 75 is arranged in the mounting groove to elastically connect the placing block 73 with the placing frame 72, so that the arrangement of the spring 75 is more secret, and the obstruction of the spring 75 to the cooperation between the placing block 73 and the sedimentation net is reduced.
Referring to fig. 3, in order to ensure accurate placement of the sedimentation net on the placement block 73, a positioning column 81 is provided at the top of the placement block 73, the sedimentation net is correspondingly provided with a positioning hole 82, and the positioning column 81 is vertically inserted into the positioning hole 82, thereby ensuring accurate placement of the sedimentation net on the placement block 73 and improving stability after placement.
Referring to fig. 2, the top of the chute 76 extends through the top of the second mud pit 12 to facilitate removal of the movable floor 71 of the placement frame 72 entirely from the second mud pit 12 for servicing and cleaning.
Referring to fig. 1, to achieve the installation of the sonar probe 6 on the second mud pit 12, an installation rod 61 is provided at the rear side of the second mud pit 12, one end of the installation rod 61 is extended above the center of the second mud pit 12, and the sonar probe 6 is installed at the end of the installation rod 61. Because installation pole 61 and sonar probe 6 can influence the rising of sedimentation net, consequently, further, the outside concave dilatation chamber 5 that is equipped with in rear side of second mud pit 12, the top surface of dilatation chamber 5 and the top surface parallel and level of second mud pit 12, and the top opening of dilatation chamber 5, the one end that the sonar probe 6 was kept away from to installation pole 61 articulates in dilatation chamber 5 for at the in-process that sedimentation net was rising, installation pole 61 can rise along with the rising of sedimentation net, thereby dodges the rising of sedimentation net. Further, the expansion chamber 5 is provided with an upper stop block 51 in the upward swinging direction of the mounting rod 61, one surface of the upper stop block 51 facing the mounting rod 61 is an inclined surface, and the upper stop block 51 enables the upward swinging angle of the mounting rod 61 to be lower than 90 degrees, so that the mounting rod 61 is prevented from swinging upwards to be vertical to the ground, and automatic downward swinging reset is affected. In addition, the expansion chamber 5 is provided with a lower stopper 52 in the direction of the lower swing of the mounting rod 61, and the lower stopper 52 swings the mounting rod 61 to the horizontal direction after the automatic lower swing. Since the sonar probe 6 needs to be immersed in the slurry in the second slurry tank 12, the slurry in the second slurry tank 12 also has a buffering effect on the sonar probe 6 during the automatic swinging of the sonar probe 6, so that the end stage of swinging of the sonar probe 6 is slowed down, and damage to the mounting rod 61 is reduced.
The embodiment also discloses a construction method of the large-diameter prefabricated pipe pile under the complex geology, which utilizes the construction structure of the large-diameter prefabricated pipe pile under the complex geology to carry out construction.
The construction method of the large-diameter prefabricated pipe pile under the complex geology comprises the following steps:
s1: drilling holes; pressing the steel pile casing 2 into the soil at the pile position, drilling and taking out the soil by using the rotary drilling rig 3, and extending a drill bit 31 of the rotary drilling rig 3 into the steel pile casing 2 for drilling;
s2: circulating slurry liquid; in the drilling process, the slurry of the first slurry tank 11 is pumped into a drill rod through a slurry pump 111 pipe, then flows into the steel casing 2 from the drill bit 31, the drilled soil and slag are mixed into the slurry, then flows back into the second slurry tank 12 and the first slurry tank 11 through the blind pipe 14, and most of the sediment in the slurry is accumulated on the sedimentation net of the second slurry tank 12;
s3: pouring concrete; after the bored concrete pile hole is obtained, pouring concrete into the bored concrete pile hole;
s4: implanting a large-diameter prefabricated pipe pile; after the concrete pouring is completed, a steel sleeve 21 is nested at the top of the steel pile casing 2, a hammering pile machine is utilized to implant the prefabricated pipe pile into the concrete, and finally the steel pile casing 2 and the steel sleeve 21 are pulled out;
in S2, a movable bottom plate 71, a plurality of sedimentation nets and a sonar probe 6 are disposed in the second mud pit 12, when the sonar probe 6 monitors that more sediment accumulates on the sedimentation nets, an alarm is given, and then the uppermost sedimentation net is lifted by a lifting appliance, and the sedimentation net drives the movable bottom plate 71 to be lifted by a certain height at the same time so as to compensate for the water level lowered by clearing the sediment.
The foregoing are preferred embodiments of the present utility model, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (2)
1. The utility model provides a major diameter precast tubular pile construction under complicated geology which characterized in that: the device comprises a second mud pit (12), wherein a plurality of sedimentation nets are arranged in the second mud pit (12) along the vertical direction; a sonar probe (6) is arranged in the second mud pit (12), and the sonar probe (6) is connected with an alarm; the horizontal cross section along which the second slurry tank (12) is arranged is kept unchanged along the vertical direction, a movable bottom plate (71) is arranged in the second slurry tank (12), the horizontal cross section of the movable bottom plate (71) is consistent with that of the second slurry tank (12), a lifting device is connected between the movable bottom plate (71) and a plurality of sedimentation nets, and the sedimentation nets drive the movable bottom plate (71) to lift in the second slurry tank (12) through the lifting device in the process of lifting and separating the sedimentation nets from the second slurry tank (12);
the two opposite ends of the movable bottom plate (71) are respectively provided with a placing rack (72), the inner walls of the two placing racks (72) are respectively provided with a plurality of placing blocks (73) along the vertical direction, and the two placing blocks (73) which are opposite and positioned between the same heights are used for placing the same sedimentation net;
the number of the sedimentation nets is three, the three sedimentation nets are a first sedimentation net (41), a second sedimentation net (42) and a third sedimentation net (43) in sequence from top to bottom, the number of the placement blocks (73) on each placement frame (72) is four, and the third sedimentation net (43), the second sedimentation net (42) and the first sedimentation net (41) are placed from bottom to top from the lowest placement block (73); a through hole (74) for sliding the placing block (73) is formed between the inner wall and the outer wall of the placing frame (72), a spring (75) is connected between the placing block (73) and the inner wall of the placing frame (72), and after the placing block (73) moves inwards, the spring (75) enables the placing block (73) to have a trend of moving outwards; the left and right inner walls of the second mud pit (12) are provided with sliding grooves (76), the sliding grooves (76) are positioned above the uppermost placing blocks (73), and when the placing frame (72) is lifted, the placing blocks (73) can sequentially spring into the sliding grooves (76) under the action of springs (75);
the sonar probe (6) is also connected with a host and a display, the host is used for processing the monitoring result of the sonar probe (6), the display is used for displaying the monitoring result of the sonar probe (6), and the sonar probe (6) is connected with the alarm through the host;
the rear side of the second mud pit (12) is provided with a mounting rod (61), one end of the mounting rod (61) extends into the upper part of the center of the second mud pit (12), the sonar probe (6) is mounted at the end of the mounting rod (61), an expansion cavity (5) is concavely arranged on the rear side of the second mud pit (12) outwards, one end of the mounting rod (61) far away from the sonar probe (6) is hinged in the expansion cavity (5), and in the rising process of the sedimentation net, the mounting rod (61) can swing upwards along with the rising of the sedimentation net;
an upper stop block (51) is arranged in the expansion cavity (5) in the upper swinging direction of the mounting rod (61), one surface of the upper stop block (51) facing the mounting rod (61) is an inclined surface, the upper stop block (51) enables the upper swinging angle of the mounting rod (61) to be lower than 90 degrees, a lower stop block (52) is arranged in the lower swinging direction of the mounting rod (61) in the expansion cavity (5), and the lower stop block (52) enables the mounting rod (61) to swing to the horizontal direction after automatically swinging down;
the through holes (74) on the placing frame (72) are concave, the bottoms of the placing blocks (73) are provided with mounting grooves, and the springs (75) are arranged in the mounting grooves and elastically connect the placing blocks (73) with the placing frame (72);
a positioning column (81) is arranged at the top of the placement block (73), positioning holes (82) are correspondingly formed in the sedimentation net, and the positioning column (81) is vertically spliced with the positioning holes (82);
the top of the chute (76) penetrates the top of the second mud pit (12).
2. A construction method of a large-diameter prefabricated pipe pile under complex geology, which is constructed by using the large-diameter prefabricated pipe pile construction structure under complex geology according to claim 1, and is characterized by comprising the following steps:
s1: drilling holes;
s2: circulating slurry liquid;
s3: pouring concrete;
s4: implanting a large-diameter prefabricated pipe pile;
in S2, be provided with movable bottom plate (71), a plurality of net and sonar probe (6) subsides in second mud pit (12), report to the police after the sediment accumulation on the net is subsided in the monitoring of sonar probe (6), later utilize the hoist to rise the net that subsides of top, this subsides net and drives movable bottom plate (71) simultaneously and rise certain height to compensate the water level that descends because clear up sediment.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN214614052U (en) * | 2021-02-06 | 2021-11-05 | 中建四局建设发展有限公司 | Construction device for implanting prefabricated pipe pile into complex geology |
| CN114775671A (en) * | 2022-04-29 | 2022-07-22 | 保利长大工程有限公司 | Large-diameter precast tubular pile construction method under complex geology |
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| CN110409461A (en) * | 2019-08-09 | 2019-11-05 | 广州市建筑科学研究院有限公司 | A kind of base pit stand construction based on assembled large-diameter tubular pile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN214614052U (en) * | 2021-02-06 | 2021-11-05 | 中建四局建设发展有限公司 | Construction device for implanting prefabricated pipe pile into complex geology |
| CN114775671A (en) * | 2022-04-29 | 2022-07-22 | 保利长大工程有限公司 | Large-diameter precast tubular pile construction method under complex geology |
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