CN220521423U - Quality detection device for ultra-long pile foundation of deep foundation pit support structure - Google Patents
Quality detection device for ultra-long pile foundation of deep foundation pit support structure Download PDFInfo
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- CN220521423U CN220521423U CN202321705845.1U CN202321705845U CN220521423U CN 220521423 U CN220521423 U CN 220521423U CN 202321705845 U CN202321705845 U CN 202321705845U CN 220521423 U CN220521423 U CN 220521423U
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- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 230000002787 reinforcement Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 230000007547 defect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/043—Analysing solids in the interior, e.g. by shear waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/223—Supports, positioning or alignment in fixed situation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0232—Glass, ceramics, concrete or stone
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/025—Change of phase or condition
- G01N2291/0258—Structural degradation, e.g. fatigue of composites, ageing of oils
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/048—Transmission, i.e. analysed material between transmitter and receiver
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/10—Number of transducers
- G01N2291/105—Number of transducers two or more emitters, two or more receivers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/269—Various geometry objects
- G01N2291/2698—Other discrete objects, e.g. bricks
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model discloses a quality detection device for a deep foundation pit building enclosure overlong pile foundation, which comprises a plurality of parallel sounding pipelines vertically arranged on a reinforcement cage of the pile foundation, wherein the sounding pipelines are arranged in pairs and connected with each other through a connecting bracket, each two opposite sounding pipelines are respectively provided with an acoustic wave generator and a receiving transducer, and the acoustic wave generators and the receiving transducers are respectively connected with an acoustic wave detector arranged outside the pile foundation through cables. According to the ultra-long pile foundation quality detection device for the deep foundation pit support structure, the limit sliding protrusions in the sound detection pipeline are matched with the nested limit grooves on the sound wave emitter and the sound wave transducer, so that the sound wave emitter and the sound wave transducer are always kept at the central position of the sound detection pipeline when the sound detection pipeline is lifted, the measurement accuracy is higher, and the integrity result of the pile foundation is judged more accurately.
Description
Technical Field
The utility model relates to the field of pile foundation quality detection in civil engineering, in particular to a device for detecting the quality of an ultra-long pile foundation of a deep foundation pit support structure.
Background
Pile foundations are widely used in the civil engineering field as a deep foundation structure. In the construction and manufacturing process of the pile foundation, defects such as pile breakage, neck expansion, diameter shrinkage, segregation, mud clamping, sediment, cavities and the like are very easy to occur due to the influences of factors such as construction technology, personnel operation, external conditions and material quality, the defects are potential hidden dangers of a building, the quality of the building is greatly influenced, and once the defect part is not loaded with the quality of an upper structure, the building is collapsed, and the loss is very serious. Therefore, pile foundation detection is particularly important, and currently existing pile foundation quality detection methods include a static load test method, a core drilling method, a low strain method, a high strain method, a self-balancing method and an acoustic wave transmission method. The principle of detecting the quality of concrete by using the ultrasonic transmission method is that a plurality of sounding pipes are pre-buried in the pile in advance and used as channels of ultrasonic receiving and transmitting transducers. In the detection, a transmitting probe for transmitting ultrasonic waves is placed in one tube, and a receiving probe for receiving ultrasonic waves is placed in the other tube. The two probes are synchronously lifted from the bottom upwards, and the instrument records the acoustic characteristics of ultrasonic wave propagation in a concrete measuring surface consisting of two pipes. According to the arrival time, amplitude, frequency variation and waveform distortion degree of the wave, the quality condition of the concrete is determined through analysis, and the property, size, space position and concrete uniformity of the defect are determined.
However, there are problems in the existing process of using the acoustic wave transmission method. For example, when the acoustic pipes are pre-buried, it is necessary to ensure that several acoustic pipes are parallel, otherwise, the accuracy of the final detection result is affected. In addition, in some existing methods for reinforcing the sounding pipes, brackets are placed between several sounding pipes to ensure stability of the sounding pipes, however, since the propagation speed of sound waves in concrete is different from that of the brackets for reinforcing, the final result is inaccurate, and the integrity of the pile body is affected.
Disclosure of Invention
The utility model aims to provide a device for detecting the quality of a deep foundation pit support structure overlength pile foundation, which solves the problems in the background art and improves the accuracy of pile foundation quality detection.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model discloses a quality detection device for a deep foundation pit support structure overlength pile foundation, which comprises a plurality of parallel sounding pipelines vertically arranged on a reinforcement cage of the pile foundation, wherein the sounding pipelines are arranged in pairs and connected with each other through a connecting bracket, each two opposite sounding pipelines are respectively provided with an acoustic wave generator and a receiving transducer, and the acoustic wave generators and the receiving transducers are respectively connected with an acoustic wave detector arranged outside the pile foundation through cables.
Further, each sounding pipe is connected end to end by a plurality of sounding pipes in sequence, and the connection parts between the adjacent sounding pipes are wrapped and fixed through sleeves.
Further, a plurality of sealing covers which are sleeved and matched with the end parts of the sound detection pipelines are arranged on the connecting support.
Further, each sound wave generator and each receiving transducer are respectively sleeved with a nest which is in sliding fit with the inner wall of the sound detection pipeline.
Further, two limiting sliding protrusions are symmetrically arranged on the inner wall of each sound detection pipeline, and two limiting grooves respectively matched with the two limiting sliding protrusions are symmetrically arranged on the outer wall of the nest.
Further, two limiting grooves are symmetrically arranged on the inner wall of each sound detection pipeline, and two limiting sliding protrusions which are respectively matched with the two limiting grooves are symmetrically arranged on the outer wall of the nest.
Compared with the prior art, the utility model has the beneficial technical effects that:
according to the ultra-long pile foundation quality detection device for the deep foundation pit support structure, the limit sliding protrusions in the sound detection pipeline are matched with the nested limit grooves on the sound wave emitter and the sound wave transducer, so that the sound wave emitter and the sound wave transducer are always kept at the central position of the sound detection pipeline when the sound detection pipeline is lifted, the measurement accuracy is higher, and the integrity result of the pile foundation is judged more accurately.
Drawings
The utility model is further described with reference to the following description of the drawings.
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a perspective view of a sound tube;
FIG. 3 is a perspective view of a sleeve;
FIG. 4 is a perspective view of a nest;
FIG. 5 is a cutaway perspective view of a sound tube;
FIG. 6 is a cutaway perspective view of the transmitter in a sound tube;
FIG. 7 is a perspective view of a cross bracket;
FIG. 8 is a perspective view of a cross-brace attached sound tube;
reference numerals illustrate: 1. an acoustic wave detector; 2. a cable; 3. sounding the pipeline; 301. limiting sliding convex; 4. nesting; 401. a limit groove; 5. an acoustic wave emitter; 6. a sleeve; 7. an acoustic wave transducer; 8. a foundation pile; 9. a cross bracket; 901. sealing cover.
Detailed Description
As shown in fig. 1-8, a quality detection device for ultra-long pile foundation of deep foundation pit enclosure structure comprises a plurality of parallel sounding pipes 3 vertically arranged on a reinforcement cage of pile foundation 8, in this embodiment, the number of sounding pipes 3 is four, each sounding pipe 3 can be sequentially connected end to end by a plurality of sections of sounding pipes, and the connection parts between adjacent sounding pipes are wrapped and fixed by a sleeve 6 as shown in fig. 3.
The four acoustic pipes 3 are disposed two by two and the bottom ends are connected by a connecting bracket, as shown in fig. 7 and 8, the connecting bracket in this embodiment is specifically disposed as a cross bracket 9, and four sealing covers 901 that are sleeved and matched with the end portions of the acoustic pipes 3 are disposed on the cross bracket 9.
Every two opposite acoustic pipelines 3 are respectively provided with an acoustic wave generator 5 and a receiving transducer 7, and the acoustic wave generator 5 and the receiving transducer 7 are respectively connected with an acoustic wave detector 1 arranged outside the pile foundation 8 through cables 2.
In addition, as shown in fig. 4-6, each acoustic wave generator 5 and each receiving transducer 7 are respectively sleeved with a nest 4 which is in sliding fit with the inner wall of the acoustic pipeline 3. Two limit sliding protrusions 301 are symmetrically arranged on the inner wall of each sound detection pipeline 3, and two limit grooves 401 respectively matched with the two limit sliding protrusions 301 are symmetrically arranged on the outer wall of the nest 4.
In addition, there is a second embodiment of the nest 4 slidingly engaged with the inner wall of the acoustic pipes 3, that is, two limiting groove structures are symmetrically disposed on the inner wall of each acoustic pipe 3, and two limiting sliding structures (not shown in the structure diagram) respectively adapted to the two limiting groove structures are symmetrically disposed on the outer wall of the nest 4.
Specifically, the above limiting sliding protrusion 301 and the limiting groove 401 are both in smooth surface structures, and the nest 4 is limited to slide up and down in the sounding pipe 3, so that radial runout is avoided.
The detection method of the utility model comprises the following steps:
firstly, erecting an acoustic wave detector outside a pile foundation, and then debugging an acoustic wave emitter 5, an acoustic wave transducer 7 and the acoustic wave detector 1; then, placing an acoustic wave emitter and a transducer in a pre-arranged acoustic pipeline, specifically, a hoop 44 shown in fig. 4 is arranged on the upper hoops of the acoustic wave emitter 5 and the acoustic wave transducer 7, two limit grooves 401 with central symmetry are arranged on the hoop 4, the peripheral wall of the hoop 4 in fig. 4 is in sliding fit with the inner peripheral wall of the acoustic pipeline, and the limit grooves of the hoop in fig. 4 are matched with limit protrusions 301 of the acoustic pipeline 3, so that the acoustic wave emitter 5 and the acoustic wave transducer 7 can vertically move in the acoustic pipeline 3 along the axial direction of the acoustic pipeline 3, a cross-section perspective view of the emitter in the acoustic pipeline is shown in fig. 6, and the transducers are the same; then, the acoustic wave emitter 5 and the acoustic wave detector 1 are connected with the cable 2, and the acoustic wave transducer 7 and the acoustic wave detector 1 are also connected through the corresponding cable 2; finally, the sound wave transmitter 5 and the sound wave transducer 7 are placed in the sound measuring tube 3 in the mode, the heights of the transmitter 5 and the transducer 7 are controlled by stretching the cable 2, concrete detection between the transmitter 5 and the transducer 7 is carried out, and the pile body integrity is determined according to the received sound wave parameters after detection is started.
The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.
Claims (6)
1. The utility model provides a deep basal pit building enclosure overlength pile foundation quality detection device which characterized in that: the device comprises a plurality of mutually parallel sound detection pipelines which are vertically arranged on a reinforcement cage of a pile foundation, wherein the sound detection pipelines are arranged in pairs and connected through connecting brackets, sound wave generators and receiving transducers are respectively arranged in every two opposite sound detection pipelines, and the sound wave generators and the receiving transducers are respectively connected with a sound wave detector arranged outside the pile foundation through cables.
2. The deep foundation pit enclosure ultralong pile foundation quality detection device of claim 1, wherein: each sounding pipe is connected end to end by multisection sounding pipe in order to the junction between the adjacent sounding pipe is fixed through sleeve parcel.
3. The deep foundation pit enclosure ultralong pile foundation quality detection device of claim 1, wherein: the connecting support is provided with a plurality of sealing covers which are sleeved and matched with the end parts of the sound detection pipelines.
4. The deep foundation pit enclosure ultralong pile foundation quality detection device of claim 1, wherein: each sound wave generator and each receiving transducer are respectively sleeved with a nest which is in sliding fit with the inner wall of the sound detection pipeline.
5. The deep foundation pit enclosure ultralong pile foundation quality detection device of claim 4, wherein: two limit sliding protrusions are symmetrically arranged on the inner wall of each sound detection pipeline, and two limit grooves respectively matched with the two limit sliding protrusions are symmetrically arranged on the outer wall of the nest.
6. The deep foundation pit enclosure ultralong pile foundation quality detection device of claim 4, wherein: two limiting grooves are symmetrically arranged on the inner wall of each sound detection pipeline, and two limiting sliding protrusions which are respectively matched with the two limiting grooves are symmetrically arranged on the outer wall of each nest.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321705845.1U CN220521423U (en) | 2023-06-29 | 2023-06-29 | Quality detection device for ultra-long pile foundation of deep foundation pit support structure |
| DE202023104712.2U DE202023104712U1 (en) | 2023-06-29 | 2023-08-18 | Device for determining the quality of a pile foundation used in a deep foundation pit enclosure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321705845.1U CN220521423U (en) | 2023-06-29 | 2023-06-29 | Quality detection device for ultra-long pile foundation of deep foundation pit support structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220521423U true CN220521423U (en) | 2024-02-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321705845.1U Active CN220521423U (en) | 2023-06-29 | 2023-06-29 | Quality detection device for ultra-long pile foundation of deep foundation pit support structure |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN220521423U (en) |
| DE (1) | DE202023104712U1 (en) |
-
2023
- 2023-06-29 CN CN202321705845.1U patent/CN220521423U/en active Active
- 2023-08-18 DE DE202023104712.2U patent/DE202023104712U1/en active Active
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| Publication number | Publication date |
|---|---|
| DE202023104712U1 (en) | 2023-09-12 |
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