CN108396734B - Device for controlling pile top concrete pouring elevation of punched bored pile - Google Patents
Device for controlling pile top concrete pouring elevation of punched bored pile Download PDFInfo
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- CN108396734B CN108396734B CN201810405512.4A CN201810405512A CN108396734B CN 108396734 B CN108396734 B CN 108396734B CN 201810405512 A CN201810405512 A CN 201810405512A CN 108396734 B CN108396734 B CN 108396734B
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- 238000007667 floating Methods 0.000 claims abstract description 64
- 238000005266 casting Methods 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 239000003550 marker Substances 0.000 claims description 13
- 238000004080 punching Methods 0.000 claims description 8
- 238000005086 pumping Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 4
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 4
- 241001330002 Bambuseae Species 0.000 claims description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 4
- 239000011425 bamboo Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 4
- 238000009435 building construction Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 16
- 230000002787 reinforcement Effects 0.000 description 16
- 239000002002 slurry Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000002699 waste material Substances 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
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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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
Abstract
The invention discloses a device for controlling the concrete pouring elevation of the pile top of a punched bored pile, which relates to the technical field of building construction and comprises a sleeve, a floating plate, an indication mark post, a guide hoop and a bottom supporting cross arm, wherein the upper end of the sleeve is connected with a top cover, the position of the sleeve close to the bottom end is connected with a limit screw, the wall of the sleeve is provided with a plurality of serial holes I, the middle part of the floating plate is connected with a connecting rod, the floating plate is integrally arranged on the upper side of the limit screw on the inner side of the sleeve, the bottom end of the indication mark post is connected with the connecting rod on the middle part of the plate body of the floating plate, the outer surface of the position of the indication mark post close to the upper end is respectively provided with a slowing pump mark and a stopping pump mark, the guide hoop and the bottom supporting cross arm are respectively fixedly connected with a vertical main rib of the punched pile, the bottom supporting cross arm is positioned on the lower side of the guide hoop, the sleeve is sleeved in the guide ring of the guide hoop, and the bottom end of the sleeve is supported by the bottom supporting cross arm. The device can accurately grasp concrete feeding, prevent concrete from exceeding the designed pile top elevation caused by over casting, or prevent pile top concrete from reaching the designed elevation caused by insufficient casting.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a device for controlling the pile top concrete pouring elevation of a punched bored pile.
Background
Because the punched bored concrete pile has small harmful influence on adjacent buildings and surrounding environments, the pile length and diameter can be freely changed according to design requirements, the pile end can enter a bearing layer or an embedded rock stratum, the single pile bearing capacity is large, the construction can be performed under the geological condition of higher underground water level or abundant underground water, and the construction cost is low, so the bored concrete pile is the first choice of the foundation form of a plurality of high-rise and super high-rise buildings at present.
Pile walking of punching filling pile: because the load difference between the main building and the superstructure of the high-rise building and the superstructure of the super high-rise building is large, the burial depth of the main building foundation (the foundation such as a beam and a shear wall on the upper part of a pile foundation) is much larger than that of the foundation of the superstructure (usually a raft foundation), the pile tops of the main building foundation piles are often much lower than those of the foundation piles of the superstructure (as shown in figure 1), in order to prevent a large amount of accumulated water of the main building foundation pits in the construction process, the construction of partial pile foundations of the main building is convenient, the hole forming surface of the main building is generally consistent with that of the punched pile of the superstructure, the foundation pit of the main building is excavated after the construction of the pile foundation of the main building is finished, and the pile top of the punched pile is only formed to the hole forming surface of the pile hole without pouring concrete, namely pile walking (as shown in figure 2).
The bored concrete pile concrete is poured underwater, the guide pipe extends to the bottom of the pile hole before the concrete is poured, and the wall protection slurry in the pile hole is extruded from bottom to top through the dead weight of the concrete to be replaced by compact pile body concrete (shown in figure 3).
Pile top concrete elevation control: when an operator predicts that the concrete is about to reach the designed pile top elevation, the inspector holds the lifting hammer in the pile hole, lifts the lifting hammer rope up and down, and judges whether the concrete is poured to the designed elevation or not by touching the resistance condition of the lower end of the lifting hammer by hand (as shown in fig. 4).
This conventional approach has the following disadvantages:
because slurry leakage often exists in the pouring process of the punched bored concrete pile, the actual pouring quantity of the concrete is much larger than the theoretical quantity. And determining the pile top concrete elevation measurement time in an operator pre-estimating mode, so that the measurement time is inaccurate.
And when the inspector measures the pile top elevation, the concrete needs to be poured. In order to prevent the concrete from being poured at the over-designed elevation, the construction progress is greatly delayed by measuring in advance for many times.
And determining whether the concrete surface reaches the design elevation or not by means of the resistance mode of the bottom end of the hanging hammer through the touch of both hands of an operator. Different measuring staff, different concrete thickness, different touch feeling and different obtained results.
The operators do not consider the residual amount of concrete in the concrete guide pipe and the receiving hopper after the concrete is fed, so that the waste of concrete materials is caused.
Because the measurement of the pile top concrete elevation of the punched pile is not timely or accurate, the phenomenon that the actual pile top elevation greatly exceeds the designed pile top elevation often occurs, and besides the pile top slurry is chiseled, a large amount of concrete which is poured in a plurality of ways is chiseled, so that materials are wasted, and a large amount of manpower and time are consumed (as shown in figure 5); or the actual pile top elevation is lower than the designed pile top elevation, and the design unit is required to provide a change scheme, namely, repairing the pile head or deepen the pile top bearing platform, so that the construction time of the foundation is greatly delayed (as shown in fig. 6).
Disclosure of Invention
The invention aims at overcoming the defects in the prior art, and provides a device for controlling the pile top concrete pouring elevation of a punched bored pile, by adopting the device, concrete feeding can be accurately controlled, and the situation that the pile top concrete exceeds the designed pile top elevation caused by over-pouring of the pile top concrete or the pile top concrete cannot reach the designed elevation after molding caused by insufficient pile top concrete pouring is effectively prevented.
The technical scheme adopted by the invention for achieving the purpose is as follows: the device for controlling the pouring elevation of the concrete at the pile top of the punched bored pile comprises a sleeve, a floating plate, an indication mark post, a guide hoop and a bottom supporting cross arm, wherein the upper end of the sleeve is connected with a top cover, a limit screw rod extending to the inner wall of the sleeve is connected at the position close to the bottom end of the sleeve, the wall of the sleeve is provided with a plurality of series flow holes I penetrating through the inner surface and the outer surface of the wall of the sleeve, the floating plate comprises a circular floating plate body and a circular ring-shaped rubber ring connected at the periphery of the upper surface and the lower surface of the floating plate body, the floating plate body is provided with a plurality of series flow holes II penetrating through the upper surface and the lower surface of the floating plate body, the rubber ring is fixedly connected with the floating plate body through a fixing device, the middle part of the upper surface of the floating plate body is connected with a connecting rod, the floating plate is integrally arranged on the upper side of the limit screw on the inner side of the sleeve, the bottom end of the indication mark post is connected with the connecting rod in the middle of the floating plate body, the outer surface of the upper end position of the indication mark post is respectively provided with a slowing pump material mark and a stopping pump material mark, the guide hoop comprises a circular guide ring and a connecting arm I connected to one side of the guide ring, the connecting arm I is fixedly connected with the vertical main rib of the punched pile, the bottom supporting cross arm comprises a connecting arm II and a supporting arm formed by bending and extending one end of the connecting arm II, the connecting arm II is fixedly connected with the vertical main rib of the punched pile, the bottom supporting cross arm is positioned on the lower side of the guide hoop, the sleeve is sleeved in the guide ring of the guide hoop, and the bottom end of the sleeve is supported by the supporting arm of the bottom supporting cross arm.
The invention further adopts the technical scheme that: the indication mark post is formed by connecting the heads and the tails of a plurality of sections of posts, each section of post comprises a sleeve post positioned at the lower side and a guide rod connected to the upper end of the sleeve post, the sleeve post is a hollow steel pipe, a spring post hole penetrating through the wall of the steel pipe is formed in the position, close to the bottom end, of the sleeve post, the outer diameter of the guide rod is slightly smaller than the inner diameter of the sleeve post, and a spring post I which is clamped and matched with the spring post hole of the adjacent post is arranged on the outer surface of the guide rod.
The invention further adopts the technical scheme that: one side of the guide rod is further provided with a guide groove I in an inward concave manner, one side of the connecting rod on the upper surface of the floating plate body is connected with a spring column II, one side of the connecting rod is provided with a guide groove II in an inward concave manner, and when the bottom end of the indication mark post is connected with the connecting rod of the floating plate body, the spring column II of the connecting rod of the floating plate body is matched with a spring column hole of the bottom end of the indication mark post.
The invention further adopts the technical scheme that: the distance between the slow pumping mark and the stop pumping mark at the upper end of the indication mark post in the vertical direction is 1 meter.
The invention further adopts the technical scheme that: the anti-shaking sleeve is sleeved on the outer edge of the upper end of the indication marker post to prevent the indication marker post from shaking, and comprises a fixing rod fixed on the top end of the side wall of the cast-in-place pile and a ferrule connected to the top end of the fixing rod.
The device for controlling the pile top concrete pouring elevation of the punched bored pile has the following beneficial effects: the device utilizes the principle that a floating plate of the device does not float in pile hole slurry and concrete floating slurry, returns up to the concrete with high density to float up, prompts the concrete surface to reach the designed elevation in real time by pasting a mark on an index mark post, displays the actual arrival height of concrete when the underwater concrete pouring of the punched pile is about to reach the designed elevation (approaches to the designed elevation), and can calculate the concrete allowance in a concrete guide pipe and a receiving hopper above the concrete surface in the pile hole so as to determine the concrete stopping pouring stopping time, so that on-site operators can accurately grasp concrete feeding, fully utilize the concrete in the guide pipe and the receiving hopper, prevent the concrete at the pile top from overstocking (over-designed pile top elevation), or prevent the concrete at the pile top from reaching the designed elevation after molding, and avoid the length supplementing pile head or deepening the pile top bearing platform from delaying the construction period; meanwhile, the device is simple to manufacture, convenient to operate, quick in assembly and disassembly, light in weight, small in size and capable of being repeatedly utilized.
The device for controlling the pile top concrete pouring elevation of the punched bored pile according to the invention is further described below with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic diagram of the structure of a main building pile foundation and a skirt building pile foundation;
FIG. 2 is a pile running schematic of a punched bored pile construction;
FIG. 3 is a schematic view of a construction of cast concrete for prior art bored pile construction;
FIG. 4 is a schematic diagram of a prior art bored concrete pile construction inspector holding a drop hammer into a pile hole to verify whether concrete has been poured to a design elevation;
FIG. 5 is a schematic diagram of a prior art bored concrete pile construction wherein the actual pile top elevation substantially exceeds the design pile top elevation;
FIG. 6 is a schematic diagram of a prior art bored concrete pile construction with an actual pile top elevation that does not reach the design pile top elevation;
FIG. 7 is a schematic view of a sleeve structure of the device for controlling the pile top concrete casting elevation of the punched bored pile;
FIG. 8 is a schematic view of the structure of a sleeve closure cap of the apparatus for controlling the elevation of a cast-in-place bored pile top concrete casting according to the present invention;
FIG. 9 is a schematic view of the structure of a floating plate body of the device for controlling the pile top concrete casting elevation of the bored pile;
FIG. 10 is a schematic view of the rubber ring of the device for controlling the pile top concrete casting elevation of the punched bored pile;
FIG. 11 is a schematic view of the structure of the connecting rod of the device for controlling the pile top concrete casting elevation of the punched bored pile;
FIG. 12 is a schematic view of the overall structure of a floating plate of the device for controlling the pile top concrete casting elevation of a bored pile according to the present invention;
FIG. 13 is a schematic view of the construction of the anti-sloshing sleeve of the apparatus for controlling the elevation of the concreting of the pile top of a bored pile according to the present invention;
FIG. 14 is a schematic view of the structure of an indicator post of the apparatus for controlling the elevation of a cast-in-place bored pile top concrete casting according to the present invention;
FIG. 15 is a schematic structural view of the connection of the guide hoop, the bottom supporting cross arm and the vertical main rib of the punched pile of the device for controlling the pile top concrete pouring elevation of the punched bored pile;
FIG. 16 is a schematic view of the structure of an indicator post connected to a floating plate;
FIG. 17 is a schematic view of the configuration of the floating plate with attached indicator posts disposed within the sleeve;
FIG. 18 is a schematic view of the configuration of the floating plate with attached indicator post disposed within the sleeve and then the spacing screw installed;
FIG. 19 is a schematic view of the structure of a guide hoop and a bottom supporting cross arm of the device for controlling the pile top concrete pouring elevation of the punched bored pile of the invention for lifting a reinforcement cage;
fig. 20 is a perspective view of the connection of the vertical main bars of the reinforcement cage with the guide hoops and the bottom cross arms;
FIG. 21 is a schematic view of the sleeve of FIG. 18 with attached float and indicator post disposed within the guide collar based on FIG. 19;
FIG. 22 is a schematic view of the sleeve of FIG. 18 with attached float and indicator post disposed within the guide collar based on FIG. 20;
FIG. 23 is an enlarged view of a portion of the sleeve coupled to the guide band and the base cross arm;
fig. 24 is a schematic view of the indicator post after the reinforcement cage is lifted into place, exposing the mud surface of the hole pile, and installing an anti-sway brace;
reference numerals illustrate: 1-apron building, 2-main building, 3-apron building pile foundation, 4-pile driving part, 5-main building pile foundation, 6-pile hole pile casing, 7-slurry, 8-pile head slurry, 9-pile body concrete, 10-reinforcement cage, 11-concrete, 12-concrete conduit bottom end, 13-concrete conduit, 14-receiving hopper, 15-concrete pump pipe, 16-receiving hopper steel wire lifting rope, 17-inspector, 18-lifting rope, 19-lifting hammer, 20-multi-cast concrete, 21-sleeve, 22-series flow hole I, 23-limit screw, 24-seal cap, 25-locating hole, 26-hollow round hole, 27-floating plate body, 28-series flow hole II, 29-screw hole, 30-screw hole I, 31-rubber ring, 32-screw hole II, 33-connecting rod, 34-spring column II, 35-guiding groove II, 36-connecting screw, 37-shaking prevention sleeve, 38-ferrule, 39-fixed rod, 40-indicating mark rod, 41-spring column I, 42-guiding groove I, 43-guiding rod, 44-sleeve rod, 45-spring column hole, 46-punching pile vertical main rib, 47-guiding ring, 48-connecting arm I, 49-guiding hoop, 50-supporting bottom cross arm, 51-supporting arm, 52-connecting arm II, 53-slowing pump mark, 54-stopping pump mark, 55-floating plate, 56-limiting screw hole, 57-steel pipe, H-hole pile hole surface elevation, hn-design pile top elevation, h1-actual pile top elevation, L-pile running length and L2-pile head slurry height.
Detailed Description
As shown in fig. 7 to 23, the device for controlling the concrete pouring elevation of the pile top of the punched bored pile comprises a sleeve, a floating plate, an indication mark post, a guide hoop, a bottom supporting cross arm and an anti-shaking sleeve.
As shown in fig. 7, 8, 17 and 18, the sleeve is made of stainless steel pipes, the upper end of the sleeve is connected with a capping cover, the middle part of the capping cover is provided with a positioning hole, and the periphery of the positioning hole is also provided with a hollowed-out round hole. The sleeve is provided with a limit screw hole with the diameter of 10mm near the bottom end position, the distance between the limit screw hole and the end part of the sleeve bottom end is 100mm, the sleeve is connected with a limit screw extending to the inner wall of the sleeve near the bottom end position, and the limit screw is arranged in the limit screw hole. The limiting screw can prevent the floating plate in the cylinder from sinking. The telescopic section of thick bamboo wall is equipped with a plurality of series flow holes I that run through the section of thick bamboo wall internal and external surface, and adjacent row's series flow hole I's interval is 30cm, and fretwork round hole and series flow hole I's effect is: after the device is sunk into the pile hole along with the pile body reinforcement cage, the pile hole mud can freely flow into the sleeve.
As shown in fig. 14, the indication mark post is formed by connecting a plurality of sections of posts end to end, each section of post comprises a sleeve post positioned at the lower side and a guide rod connected to the upper end of the sleeve post, the indication mark post is made of light hollow stainless steel, the diameter of the post is 15mm, and the standard section length of each section of post is 1.5 m. The loop bar is hollow steel pipe in inside, and the loop bar is close to the bottom position and is equipped with the bullet post hole that runs through the steel pipe wall, and the external diameter of guide arm is slightly less than the internal diameter of loop bar, and the guide arm surface is equipped with the bullet post I that holds complex mutually with the bullet post hole of adjacent pole, and one side of guide arm is inwards sunken still to be equipped with guide groove I. The indication mark posts can be flexibly disassembled and assembled for lengthening, and the indication mark posts with corresponding numbers are installed according to the different lengths of the pile walking holes.
As shown in fig. 9 to 12, the floating plate comprises a circular floating plate body and annular rubber rings connected to the peripheries of the upper surface and the lower surface of the floating plate body, the floating plate body is made of a 10mm thick steel flat plate, the radius of the steel flat plate is smaller than the inner diameter of the sleeve barrel by 5mm, a plurality of series flow holes II penetrating through the upper surface and the lower surface of the floating plate body are formed in the floating plate body, screw holes for connecting the connecting rods are formed in the middle of the floating plate body, and screw holes I which are uniformly distributed are formed in the periphery of the floating plate body. The rubber ring is annular with the thickness of 3mm, the outer radius of 75mm and the inner radius of 60mm, and is used for preventing sand and stones from being clamped between the floating plate and the cylinder body and preventing the floating plate from floating upwards, and the plate body of the floating plate is connected with the rubber ring up and down respectively. The periphery of the rubber ring is provided with a screw hole II which is mutually corresponding to the screw hole I. The rubber circle passes through fixing device (connecting screw in this embodiment) and kickboard plate body fixed connection, and the middle part of kickboard plate body upper surface is connected with a connecting rod, and the connecting rod is the preparation of light stainless steel, diameter 15mm, and connecting rod upper end one side of kickboard plate body upper surface is connected with bullet post II, and connecting rod one side is also inwards sunken to be equipped with guide groove II. The lower end of the rod body is solid, and rubber is embedded. The connecting rod is connected with the floating plate by adopting a screw.
As shown in fig. 16 and 17, the bottom end of the indication mark post is connected with the connecting rod in the middle of the floating plate body, and when the bottom end of the indication mark post is connected with the connecting rod of the floating plate body, the spring column of the connecting rod of the floating plate body is matched with the spring column hole of the bottom end of the indication mark post. The floating plate connected with the indication mark post is integrally arranged on the upper side of the limit screw rod on the inner side of the sleeve, and the upper end of the indication mark post penetrates out of the positioning hole in the middle of the sleeve seal top cover. The outer surface of the upper end position of the indication mark post is respectively provided with a slowing pump material mark and a stopping pump material mark, and the distance between the slowing pump material mark and the stopping pump material mark at the upper end of the indication mark post in the vertical direction is 1 meter. The slow-down pumping mark is formed by sticking a yellow electrical adhesive tape on the surface of the indication mark post, and the stop pumping mark is formed by sticking a red electrical adhesive tape on the surface of the indication mark post.
As shown in fig. 15, the guide hoop and the bottom supporting cross arm are formed by bending steel bars, the guide hoop comprises a circular guide ring and a connecting arm I connected to one side of the guide ring, the radius of the guide ring is slightly larger than the outer diameter of the sleeve, and the sleeve is prevented from moving. The connecting arm I is fixedly connected with the vertical main reinforcement of the punching pile, and the connecting arm I is in spot welding connection or binding connection with the vertical main reinforcement of the punching pile. The support bottom cross arm comprises a connecting arm II and a supporting arm formed by bending and extending one end of the connecting arm II, wherein the connecting arm II is fixedly connected with the vertical main rib of the punching pile, and the connecting arm II of the support bottom cross arm is in spot welding connection or binding connection with the vertical main rib of the punching pile. The support bottom cross arm is located the downside of direction hoop, and the sleeve cover is in the guide ring of direction hoop, and the sleeve bottom is supported by the support arm that holds in the palm the bottom cross arm, holds in the palm the bottom cross arm and can prevent the device sinking effect. As shown in fig. 13 and 24, the anti-shaking sleeve comprises a fixing rod fixed at the top end of the side wall of the cast-in-place pile and a ferrule connected to the top end of the fixing rod, and the sleeve of the anti-shaking sleeve is sleeved on the outer edge of the upper end of the indication mark rod to prevent the indication mark rod from shaking.
When the concrete is fed, the residual amount of the concrete in the guide pipe and the receiving hopper is as follows: v (V) n =πr 2 ·L+1。（πr 2 When the L concrete is terminated, the residual amount of concrete in the concrete pipe is calculated. r is the inner radius of a concrete conduit, 15cm is the pile-moving length of a punched pile, 1 is the concrete allowance in a receiving hopper when the feeding of concrete is stopped, and 1 cube is taken. )
And calculating the pile running length L=H-Hn-1 (1 is the height of the slurry considering the normal pile head) according to the hole surface elevation H of the actual hole pile and the designed pile top elevation Hn.
The concrete allowance in the guide pipe and the receiving hopper can be filled with the height h=V of the punched pile n /π(R+0.1） 2 =[π×0.15×0.15×（H-Hn-1）+1]/[π×(R+0.1） 2 ]. R is the design radius of the punched pile, and 0.1 is the actual hole forming radius of the hole pile which is 0.1m larger than the design radius of the hole pile.
When in construction, the floating plate and the indication mark post are connected, and the total length of the indication mark post and the floating plate is longer than the length of the cylinder, as shown in figure 16; taking out the limit screw of the cylinder, and loading the connected floating plate and index marker post from the lower part of the cylinder, as shown in figure 17; and a barrel limiting screw is installed at the rear end, and is fastened by adopting a screw cap, as shown in figure 18.
When the top of the steel reinforcement cage is 2 meters higher than the pile hole surface, a steel pipe is used to pass through the steel reinforcement cage, and the lifting frame steel reinforcement cage is arranged in the pile hole so as to install the device, and then a punched pile of the steel reinforcement cage is welded or bound with a guide hoop and a bottom supporting cross arm on the vertical main reinforcement, as shown in fig. 19 and 20. After the reinforcement cage is installed in place, the bottom cross arm is lower than the designed pile top elevation h+1 m as shown in fig. 24. h=v n /π(R+0.1） 2 =[π×0.15×0.15×（H-Hn-1）+1]/[π×(R+0.1） 2 ]. H is the elevation of the hole surface of the hole pile, hn is the elevation of the designed pile top, and R is the designed radius of the punched pile.
The assembled device is mounted along the guide hoop and the device is supported on the support cross arm as shown in fig. 22 and 23. Lifting the reinforcement cage and withdrawing the lifting frame steel pipe. And slowly lowering the punched pile reinforcement cage, and lengthening the installation index marker post in the lowering process to ensure that the index marker post and the reinforcement cage descend at the same speed. After the reinforcement cage is hoisted in place, the indication mark post is exposed out of the mud surface of the hole pile, and an anti-shaking sleeve is installed, as shown in fig. 24.
When the hole pile is concreted, an operator observes the floating condition of the indication marker post. When the yellow mark of the marker post is exposed out of the mud surface of the hole pile and is lifted upwards continuously, the concrete feeding is slowed down; when the red mark of the marker post is exposed out of the mud surface of the hole pile, the concrete feeding is stopped, and the concrete guide pipe is lifted. And (3) taking down the standard section of the index marker post through the index marker post slow lifting device, and cleaning the standard section of the index marker post, and waiting for the subsequent hole pile to use.
Claims (3)
1. The utility model provides a device for controlling cast-in-place pile top concrete placement elevation, a serial communication port, including sleeve (21), floating plate (55), instruct stake (40), guide hoop (49), hold in the palm end cross arm (50), the upper end of sleeve (21) is connected with and seals top cap (24), sleeve (21) are connected with spacing screw (23) that extend to sleeve (21) inner wall near the bottom position, sleeve (21) section of thick bamboo wall is equipped with a plurality of series flow holes I (22) that run through the inner and outer surface of section of thick bamboo wall, floating plate (55) include circular floating plate body (27) and connect at the ring shape rubber circle (31) of floating plate body (27) upper and lower surface periphery, be equipped with a plurality of series flow holes II (28) that run through floating plate body (27) upper and lower surface on floating plate body (27) on floating plate body (27), rubber circle (31) are through fixing device and plate body (27) fixed connection, the middle part of floating plate body (27) upper surface is connected with a connecting rod (33), the whole setting of sleeve (21) is in spacing screw (23) inboard, instruct the upper side of screw (23) to stop the inside sleeve (21), instruct the upper end of floating plate body (40) and the end mark of floating plate body (27) to stop, the upper end mark of floating plate body (40) is connected with the surface of floating plate body (54), the guide hoop (49) comprises a circular guide ring (47) and a connecting arm I (48) connected to one side of the guide ring (47), the connecting arm I (48) is fixedly connected with a vertical main rib (46) of the punching pile, the bottom supporting cross arm (50) comprises a connecting arm II (52) and a supporting arm (51) formed by bending and extending one end of the connecting arm II (52), the connecting arm II (52) is fixedly connected with the vertical main rib (46) of the punching pile, the bottom supporting cross arm (50) is positioned at the lower side of the guide hoop (49), the sleeve (21) is sleeved in the guide ring (47) of the guide hoop (49), and the bottom end of the sleeve (21) is supported by the supporting arm (51) of the bottom supporting cross arm (50); the distance between the slow pumping mark (53) and the stop pumping mark (54) at the upper end of the indicating mark post (40) in the vertical direction is 1 meter; the anti-shaking sleeve (37) is sleeved on the outer edge of the upper end of the indication marker post (40) to prevent the indication marker post (40) from shaking, and the anti-shaking sleeve (37) comprises a fixing rod (39) fixed on the top end of the side wall of the cast-in-place pile and a ferrule (38) connected to the top end of the fixing rod (39).
2. The device for controlling the casting elevation of the pile top of the bored concrete pile according to claim 1, wherein the indication mark post (40) is formed by connecting a plurality of sections of posts end to end, each section of post comprises a sleeve post (44) positioned at the lower side and a guide rod (43) connected to the upper end of the sleeve post (44), the sleeve post (44) is a hollow steel pipe, a post ejection hole (45) penetrating through the pipe wall of the steel pipe is arranged at the position, close to the bottom end, of the sleeve post (44), the outer diameter of the guide rod (43) is slightly smaller than the inner diameter of the sleeve post (44), and a post ejection I (41) which is clamped and matched with the post ejection hole (45) of the adjacent post is arranged on the outer surface of the guide rod (43).
3. The device for controlling the casting elevation of the pile top of the punched bored pile according to claim 2, wherein a guiding groove I (42) is further arranged on one side of the guide rod (43) in an inward concave manner, a spring column II (34) is connected on one side of the connecting rod (33) on the upper surface of the floating plate body (27), a guiding groove II (35) is arranged on one side of the connecting rod (33) in an inward concave manner, and when the bottom end of the indicating mark post (40) is connected with the connecting rod (33) of the floating plate body (27), the spring column II (34) of the connecting rod (33) of the floating plate body (27) is matched with a spring column hole (45) on the bottom end of the indicating mark post (40).
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| CN201810405512.4A CN108396734B (en) | 2018-04-29 | 2018-04-29 | Device for controlling pile top concrete pouring elevation of punched bored pile |
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| CN201810405512.4A CN108396734B (en) | 2018-04-29 | 2018-04-29 | Device for controlling pile top concrete pouring elevation of punched bored pile |
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| CN109440841A (en) * | 2018-12-19 | 2019-03-08 | 中铁上海工程局集团有限公司 | A kind of cast-in-situ bored pile stake top concrete elevation control device |
| CN112323804A (en) * | 2020-10-27 | 2021-02-05 | 河南理工大学 | Pile top pouring height control device and method for underwater concrete pouring pile |
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| CN205894063U (en) * | 2016-06-23 | 2017-01-18 | 上海腾尚基础工程有限公司 | A complete set of pipe long spiral drilling filling pile presses cage ware |
| CN206418495U (en) * | 2017-01-23 | 2017-08-18 | 赵景涛 | A kind of borehole filling pile cage of reinforcement |
| CN107907121A (en) * | 2017-11-13 | 2018-04-13 | 江苏中瀚通讯技术有限公司 | A kind of engineering survey mark post |
| CN208346808U (en) * | 2018-04-29 | 2019-01-08 | 广西建工集团第三建筑工程有限责任公司 | A kind of device controlling Punching Borehole Cast-in-place Concrete Pile stake top concrete casting elevation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT410232B (en) * | 2001-04-25 | 2003-03-25 | Lothar Bitschnau | METHOD FOR ESTABLISHING A BUILDING CEILING ON A CONSTRUCTION |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205894063U (en) * | 2016-06-23 | 2017-01-18 | 上海腾尚基础工程有限公司 | A complete set of pipe long spiral drilling filling pile presses cage ware |
| CN206418495U (en) * | 2017-01-23 | 2017-08-18 | 赵景涛 | A kind of borehole filling pile cage of reinforcement |
| CN107907121A (en) * | 2017-11-13 | 2018-04-13 | 江苏中瀚通讯技术有限公司 | A kind of engineering survey mark post |
| CN208346808U (en) * | 2018-04-29 | 2019-01-08 | 广西建工集团第三建筑工程有限责任公司 | A kind of device controlling Punching Borehole Cast-in-place Concrete Pile stake top concrete casting elevation |
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