AU2021102235A4 - A height monitoring device for underground filling piles applicable to flood disaster areas - Google Patents
A height monitoring device for underground filling piles applicable to flood disaster areas Download PDFInfo
- Publication number
- AU2021102235A4 AU2021102235A4 AU2021102235A AU2021102235A AU2021102235A4 AU 2021102235 A4 AU2021102235 A4 AU 2021102235A4 AU 2021102235 A AU2021102235 A AU 2021102235A AU 2021102235 A AU2021102235 A AU 2021102235A AU 2021102235 A4 AU2021102235 A4 AU 2021102235A4
- Authority
- AU
- Australia
- Prior art keywords
- conduits
- casings
- separating plate
- monitoring device
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 238000012806 monitoring device Methods 0.000 title claims abstract description 19
- 239000003990 capacitor Substances 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 239000004020 conductor Substances 0.000 claims abstract description 8
- 239000002985 plastic film Substances 0.000 claims description 12
- 229920006255 plastic film Polymers 0.000 claims description 12
- 238000010276 construction Methods 0.000 abstract description 9
- 239000002699 waste material Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/14—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/955—Proximity switches using a capacitive detector
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model relates to the technical field of civil engineering and discloses
a height monitoring device for underground filling piles applicable to flood
disaster areas. The height monitoring device for underground filling piles
comprises conduits, casings, two capacitor plates, conductors, a separating plate,
water permeable holes, discharge ports and a level detection device. The casings
are sleeved on the conduits in a sliding mode. The two capacitor plates are
arranged between the casings and conduits, fixedly connected with them and
provided with conductors for measuring the capacitance. The separating plate is
horizontally arranged outside the casings and provided with water permeable
holes. The discharge ports are formed in the side wall of conduits and located
under the separating plate. The level detection device is installed on the outer
wall of casings and located above the separating plate. The height monitoring
device for underground filling piles can monitor the pouring height of concrete,
reduce construction waste, effectively avoid insufficient/excessive grouting and
improve the pouring quality.
5
2
11 4
32
Figure 1
Description
2
11 4
32
Figure 1
A height monitoring device for underground filling piles applicable to flood
disaster areas
Technical Field
The utility model relates to the technical field of civil engineering, in
particular to a height monitoring device for underground filling piles applicable
to flood disaster areas.
Background Art
With the development of building industry in recent years, more and more
super high-rise buildings have emerged in China. Pile foundation is often needed
for the places with poor soil and generally arranged underground with a large
diameter. Therefore, filling piles are widely used currently. However, the
following problems often occur during the application of concrete filling piles:
First, it is hard to control the height of excessively-grouting concrete on the
top of piles. Excessive grouting may waste a large amount of concrete, indirectly
increasing the pile cutting cost and resulting in waste of resources and materials;
conversely, insufficient grouting may lead to large amount of mortar or even soil
contained in the pile head, which affects the construction quality, fails to meet
the design requirements and increases the construction complexity due to further
reinforcement;
Second, it is hard to control the burial depth (i.e., lifting speed) of conduits.
If the conduit is lifted quickly, the laitance layer is located at the bottom or in the
middle of the pile, leading to intercalated clay or pile breaking, thereby affecting the quality of pile body; if the lifting speed is slow but the pouring speed is fast, more aggregate would be deposited deep inside the hole, and concrete disintegration during vibration may also reduce the upper strength of pile body;
Third, the structure density of filling piles may change with the pouring
height during grouting, so that the filling piles cannot resist the flood disaster,
have to be removed after construction due to poor quality and produce more
construction waste.
In conclusion, the problems in the prior art are as follows: 1. Insufficient
grouting: high cost due to pile filling, affecting the construction quality and
progress; 2. Excessive pouring: material and labor waste and high cost due to
file cutting, affecting the construction progress; 3. Environmental protection:
energy consumption, high garbage disposal cost, affecting the environment; 4.
Poor filling quality, failing to meet the local environmental requirements.
Therefore, it is urgent for technicians in this field to solve how to provide a
height monitoring device that can monitor the pouring height of concrete, reduce
the construction waste, effectively avoid the insufficient/excessive grouting and
improve the pouring quality of filling pile.
Content of Utility Model
The utility model aims to solve the defects in prior art and proposes a
height monitoring device for underground filling piles applicable to flood
disaster areas.
For the above-mentioned purposes, the utility model introduces the following technical scheme:
A height monitoring device for underground filling piles applicable to flood
disaster areas, characterized in that it comprises conduits, casings, two capacitor
plates, conductors, a separating plate, water permeable holes, discharge ports
and a level detection device. The casings are sleeved on the conduits in a sliding
mode. The two capacitor plates are arranged between the casings and conduits,
fixedly connected with them and provided with conductors for measuring the
capacitance. The separating plate is horizontally arranged outside the casings
and provided with water permeable holes. The discharge ports are formed in the
side wall of conduits and located under the separating plate. The level detection
device is installed on the outer wall of casings and located above the separating
plate.
Further, guide grooves are formed in the outer wall of conduits axially and
located at the lower side of lower capacitor plate. Pulleys matched with the
guide grooves are fixedly arranged on the inner wall of casings. The length of
guide grooves is larger than the distance between the two capacitor plates.
Further, the separating plate comprises several pressing heads arranged
outside the casing in an axial array and connected with the outer wall of casings.
The ends, far away from the casing, of the pressing heads, are fixedly connected
with the top end of conduits through connecting bars.
Further, caps of tubes are arranged between both the ends of casings and
the conduits. The outer edges of caps of tubes are fixedly connected with the casing, and the inner edges fit into the conduits. The lower end ports of conduits are sealed and fixedly connected with a plastic film, and the expansion area of the plastic film is equal to 3-5 times of the bottom surface area of conduits.
Further, level detection device is embedded in the outer wall of casings,
and the bottom of the device is close to the upper end surface of the separating
plate.
Compared with the prior art, the utility model has the following beneficial
effects:
The height monitoring device for underground filling piles can monitor the
pouring height of concrete, reduce construction waste, effectively avoid
insufficient/excessive grouting and improve the pouring quality. Since the
capacitor plates are arranged on the outer wall of conduits, the casings are
sleeved on the outer wall of conduits, the lower capacitor plate is arranged on
the inner wall of the casings and the separating plate is installed on the outer
wall of the bottom ends of casings, when concrete is filled into the pile bottom
through conduits, water in the concrete can permeate from the water permeable
holes during grouting, while the concrete is blocked under the separating plate.
When the outer edge of separating plate rotates upward under the pushing of
concrete, the rotating force can be transmitted to the top ends of casings through
connecting bars, which enables the casings to slide upward along the conduits,
and the lower capacitor plate is close to the upper capacitor plate. If the
capacitance on the multimeter connected between the upper capacitor plate and the lower capacitor plate changes, it indicates that concrete has been poured to the height of separating plate, so that the pouring height of concrete can be calculated. The height monitoring device for underground filling piles applicable to flood disaster areas is simple in structure, low in cost, high in sensitivity and able to display the pouring height on multimeter as long as the distance between the upper capacitor plate and the lower capacitor plate changes. The plastic film is paved and spread at the bottom of the filling column before grouting, which can further improve the stability of conduits during grouting. When removing the film after grouting, the structure of filling column is not affected since the film is soft and easily changed in form. Due to the arrangement of water permeable holes and the level detection device, the composition of slurry with low density can be permeated from the water permeable holes after standing for a period of time. If the level detection device detects that the level is higher than the threshold, it means the grouting material does not meet the filling requirements and the liquid higher than the threshold shall be extracted out.
Brief Description of the Attached Figures
As a part of the Specification, the attached figures are helpful for better
understanding about the utility model with the embodiments, but not a limitation
for the utility model.
Figure 1 is the overall structural diagram of height monitoring device for
underground filling piles applicable to flood disaster areas;
Figure 2 is the internal structural diagram of height monitoring device for underground filling piles applicable to flood disaster areas;
Figure 3 is the structural diagram of separating plate proposed in the utility
model.
In the figure: 1. Conduit; 2. Casing; 3. Separating plate; 31. Water
permeable hole; 32. Pressing head; 4. Connecting bar; 5. Conductor; 6. Cap of
tube; 7. Upper capacitor plate; 8. Lower capacitor plate; 9. Guide groove; 10.
Pulley; 11. Level detection device; 12. Discharge port; 13. Plastic film.
Specific Implementation Modalities
Combining the attached figure, there is a clear and complete description of
the technical schemes in embodiments of this utility model. Obviously, only
some embodiments of this utility model (instead of all the utility model cases)
are described here.
In the description of the utility model, it is to be understood that the terms
"upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside",
"outside" and other presentations relating to orientation or positional relationship
are based on the orientation or positional relationship shown in the attached
figures, and are merely for the convenience of the description of the utility
model or a simplified description, rather than indicating or implying that the
device or component referred to has a specific orientation or is manufactured or
operated in a specific orientation, which shall not be construed as limitations on
the utility model.
See Figure 1 and Figure 3, the utility model discloses a height monitoring device for filling piles and comprises conduit 1, casing 2 and separating plate 3:
An upper capacitor plate 7 is fixedly connected with the outer wall of
conduit 1. An external thread section is formed in the upper end portions of
conduit 1 for connecting conduit 1 with grouting pipes which are connected end
to end sequentially through the internal and external threads at both ends; a
discharge port 12 is formed in the side wall of conduit 1, located under the
separating plate and close to the bottom of conduit 1.
In other embodiments, the lower end ports of conduit 1 are sealed and
fixedly connected with a plastic film 13. The expansion area of the plastic film
13 is equal to 3-5 times of the bottom surface area of conduits. Before grouting,
the plastic film 13 is paved at the bottom of the filling column and expanded,
which can further improve the stability of conduit 1 (the bottoms of conduit 1
are fixed by the pressure of grouting material to the plastic film). When
removing the film after grouting, the structure of filling column would not be
affected by the plastic film 13 because the film is soft and easily changed in
form;
A lower capacitor plate 8 is fixedly connected with the inner wall of casing
2. The casing 2 is sleeved on the outer wall of conduit 1. The upper capacitor
plate 7 is fixedly connected with the inner wall of casing 2 and parallel to the
lower capacitor plate 8 to form a parallel plate capacitor; A level detection
device 11 is embedded in the outer wall of casing 2, with the bottom close to the
upper end surface of any pressing head 32 in the separating plate 3.
Gaps exist between the outer edge of upper capacitor plate 7 and casing 2
and between the lower capacitor plate 8 and the outer wall of conduit 1. A
conductor 5 is fixedly connected with the upper surface of the upper capacitor
plate 7 and the lower surface of the lower capacitor plate 8, penetrates through
the gaps between the lower capacitor plate 8 and the outer wall of conduit 1 and
between the outer edge of upper capacitor plate 7 and the inner wall of casing 2,
extends out of the caps of tube 6 at the upper ends of casing 2 and connected
with the multimeter.
One end of the separating plate 3 is fixedly connected with the outer wall of
casing 2, and the other end is fixedly connected with the top ends of casing 2
through connecting bar 4. The separating plate 3 is constituted by several
pressing heads 32 arranged circumferentially. Water permeable hole 31 is
formed in the pressing heads 32 so that residual water can be permeated during
grouting.
Specifically, guide groove 9 is axially formed along the outer wall of
conduit 1 and located under the lower capacitor plate 8. In this embodiment, the
number of guide grooves 9 is four and all are formed at intervals. The included
angle between the two adjacent guide grooves 9 is 90. Four pulleys 10 are
fixedly installed on the inner wall of casing 2, matched with the four guide
grooves 9 correspondingly and can slide on the outer wall of conduit 1 along the
guide grooves 9 vertically. In other embodiments, the number of guide grooves 9
and pulleys 10 can be determined according to the actual requirements.
Specifically, caps of tubes are arranged between both the ends of casing 2
and the conduit 1. The outer edges of the caps of tube 6 are welded on the inner
wall of casing 2, while the inner edges fit into conduit 1 and are provided with a
rubber seal coating.
Operating principle and use process: after pouring concrete from the top
connecting tube into the pile bottom for a period of time, the conduit would be
wrapped by concrete. When the concrete reaches a certain height and contacts
with the separating plate, the separating plate moves upward under the pushing
of poured concrete. Since the separating plate is fixed on the outer wall of
casings and the lower capacitor plate is fixed on the inner wall of the casings,
the separating plate can drive the casings and the lower capacitor plate to move
upward together. Besides, because the conduits and the upper capacitor plate
fixed on the outer wall of conduits do not move upward, when the distance
between the lower capacitor plate and the upper capacitor plate changes with the
upward movement of separating plate, the multimeter reading would change
quickly and start counting. Therefore, obvious change of the multimeter reading
indicates that the concrete reaches the height of separating plate, so the pouring
height of concrete column can be calculated.
Before grouting, the plastic film is paved and completely spread at the
bottom of filling column, which can further improve the stability of conduits.
The structure of filling column cannot not be affected by the removal of film
since the film is soft and easily changed in form. After grouting, the composition of slurry with the low density can be permeated from the water permeable holes after standing for a period of time. If the level detection device detects that the level of slurry reaches the threshold and cannot meet the filling requirement, the liquid higher than the threshold shall be extracted out.
As shown above, it is the preferential embodiment of the utility model,
while the protection scope of the utility model is not limited thereto. The
equivalent changes or replacements under the control of any technicians familiar
with the technical field within the disclosed scope should be included into the
protection scope of the utility model according to the technical scheme of the
utility model and its conception.
It will be understood that the term "comprise" and any of its derivatives
(eg comprises, comprising) as used in this specification is to be taken to be
inclusive of features to which it refers, and is not meant to exclude the presence
of any additional features unless otherwise stated or implied.
The reference to any prior art in this specification is not, and should not be
taken as, an acknowledgement or any form of suggestion that such prior art
forms part of the common general knowledge.
Claims (5)
1. A height monitoring device for underground filling piles applicable to
flood disaster areas, characterized in that it comprises conduits, casings, two
capacitor plates, conductors, a separating plate, water permeable holes,
discharge ports and a level detection device. The casings are sleeved on the
conduits in a sliding mode. The two capacitor plates are arranged between the
casings and conduits, fixedly connected with them and provided with conductors
for measuring the capacitance. The separating plate is horizontally arranged
outside the casings and provided with water permeable holes. The discharge
ports are formed in the side wall of conduits and located under the separating
plate. The level detection device is installed on the outer wall of casings and
located above the separating plate.
2. As described in Claim 1, the height monitoring device for underground
filling piles applicable to flood disaster areas is characterized in that guide
grooves are formed in the outer wall of conduits axially and located at the lower
side of lower capacitor plate. Pulleys are fixedly arranged on the inner wall of
casings and matched with the guide grooves. The length of each guide groove is
larger than the distance between the two capacitor plates.
3. As described in Claim 1, the height monitoring device for underground
filling piles applicable to flood disaster areas is characterized in that the
separating plate comprises several pressing heads arranged outside the casing in
an axial array and connected with the outer wall of casings. The ends, far away from the casing, of the pressing heads, are fixedly connected with the top end of conduits through connecting bars.
4. As described in Claim 1, the height monitoring device for underground
filling piles applicable to flood disaster areas is characterized in that caps of
tubes are arranged between both the ends of casings and the conduits. The outer
edges of caps of tubes are fixedly connected with the casing, and the inner edges
fit into the conduits. The lower end ports of conduits are sealed and fixedly
connected with a plastic film, and the expansion area of the plastic film is equal
to 3-5 times of the bottom surface area of conduits.
5. As described in Claim 1, the height monitoring device for underground
filling piles applicable to flood disaster areas is characterized in that the level
detection device is embedded in the outer wall of casings, and the bottom of the
device is close to the upper end surface of the separating plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2021102235A AU2021102235A4 (en) | 2021-04-28 | 2021-04-28 | A height monitoring device for underground filling piles applicable to flood disaster areas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2021102235A AU2021102235A4 (en) | 2021-04-28 | 2021-04-28 | A height monitoring device for underground filling piles applicable to flood disaster areas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2021102235A4 true AU2021102235A4 (en) | 2021-06-17 |
Family
ID=76327683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2021102235A Ceased AU2021102235A4 (en) | 2021-04-28 | 2021-04-28 | A height monitoring device for underground filling piles applicable to flood disaster areas |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2021102235A4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263181A (en) * | 2021-12-30 | 2022-04-01 | 安徽省公路桥梁工程有限公司 | Main bridge pile foundation concrete super-casting height accurate control device and use method thereof |
-
2021
- 2021-04-28 AU AU2021102235A patent/AU2021102235A4/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263181A (en) * | 2021-12-30 | 2022-04-01 | 安徽省公路桥梁工程有限公司 | Main bridge pile foundation concrete super-casting height accurate control device and use method thereof |
| CN114263181B (en) * | 2021-12-30 | 2023-09-29 | 安徽省公路桥梁工程有限公司 | Main bridge pile foundation concrete super-casting height accurate control device and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |