CN210766918U - Side hole transmission method excitation device of existing pile foundation - Google Patents
Side hole transmission method excitation device of existing pile foundation Download PDFInfo
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- CN210766918U CN210766918U CN201921277466.0U CN201921277466U CN210766918U CN 210766918 U CN210766918 U CN 210766918U CN 201921277466 U CN201921277466 U CN 201921277466U CN 210766918 U CN210766918 U CN 210766918U
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- pile foundation
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- pier stud
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Abstract
The utility model discloses a side hole transmission method excitation device of the existing pile foundation, which comprises a seismograph and a base; the seismograph is respectively connected with the storage battery, the seismic source signal receiving device, the vibration excitation hand hammer and the hydrophone through leads; the vibration excitation hand hammer can enable the pile foundation to generate vibration waves, the hydrophone is arranged in a side hole of the pile foundation and can receive the vibration waves of the pile foundation, and the seismic source signal receiving device can receive vibration wave signals on the hydrophone; the base is fastened on a pier stud on the ground surface of the pile foundation and is connected with a wedge block; the top surface of the wedge-shaped block is a plane for the hammer to knock. The base is fastened on a pier stud on the ground surface of a pile foundation, and a wedge block is connected to the base; the top surface of the wedge-shaped block is a plane for the hammer to knock. Compared with the waveform energy generated by only transversely knocking the pier stud, the method greatly improves the energy of longitudinal waveforms, and finally greatly improves the accuracy of the vibration waves collected by the hydrophone.
Description
Technical Field
The utility model belongs to building and traffic foundation engineering detection area, concretely relates to other hole transmission method excitation device of existing pile foundation.
Background
The pile foundation is a deep foundation type widely applied to the field of house construction and traffic engineering, and the quality detection of the pile foundation after the construction is finished is an important measure for ensuring the long-term safety of the foundation performance and the structure. For the existing pile foundation with built upper structure, the conventional foundation pile integrity detection methods such as low strain and ultrasonic waves are basically not applicable.
However, the design or construction record of the engineering structure is difficult to query, but the structure in the engineering requires layer-adding reconstruction or improvement of the traffic load of the bridge, or strong earthquake and excessive deformation of the upper structure of the pile foundation occur, and the constructors need to check the damage condition of the pile foundation and evaluate the current bearing capacity of the pile foundation; the method is particularly important for detecting the length and the integrity of the existing pile foundation. The side hole transmission method is that a detection hole is drilled in the soil body around the existing building pile foundation, a hydrophone is used for receiving vertical longitudinal waves which are excited by a pier column and transmitted downwards in the hole, the abnormity of the characteristic rule of the transmission and transmission of stress waves in a pile body is utilized, and the integrity of the pile body is judged according to the time rule of the transmission of head waves of the pile body.
However, existing foundations are buried deep to a certain extent, the upper portions of the foundations are usually of reinforced concrete structures such as columns and walls, when the side-hole transmission method is used for detection, if the pier columns and the wall are directly knocked in the side direction, elastic waves generated inside the structures are mainly transverse waves, longitudinal waves are not obvious, signals received by hydrophones in side holes are easily interfered by clutter, and certain difficulty is caused to signal processing and analysis of the side-hole method.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a side hole transmission method excitation device of the existing pile foundation to reduce the clutter interference of hydrophone received signal in the side hole transmission method.
The utility model provides a technical scheme that its technical problem adopted is: a side hole transmission method excitation device of an existing pile foundation comprises a seismograph and a base; the seismograph is respectively connected with the storage battery, the seismic source signal receiving device, the vibration excitation hand hammer and the hydrophone through leads; the vibration excitation hand hammer can enable the pile foundation to generate vibration waves, the hydrophone is arranged in a side hole of the pile foundation and can receive the vibration waves of the pile foundation, and the seismic source signal receiving device can receive vibration wave signals on the hydrophone; the base is fastened on a pier stud on the ground surface of the pile foundation and is connected with a wedge block; the top surface of the wedge-shaped block is a plane for the hammer to knock.
As an improvement of the scheme, the plane on the wedge-shaped block for the hammer to strike is an inclined plane.
Further, be equipped with the inflation screw on the pier stud, just the base is fixed in the pier stud through the inflation screw.
Furthermore, the base is provided with a groove matched with the side surface of the pier stud.
Further, the base is connected with the wedge-shaped block through a bolt.
Further, the distance between the base and the ground surface is less than 10 cm.
Furthermore, a plurality of bases are arranged on the pier stud.
Further, the base and the wedge-shaped block are made of steel.
The utility model has the advantages that: the base is fastened on a pier stud on the ground surface of a pile foundation, and a wedge block is connected to the base; the top surface of the wedge-shaped block is a plane for the hammer to knock. Compared with the waveform energy generated by only transversely knocking the pier stud, the method greatly improves the energy of longitudinal waveforms, and finally greatly improves the accuracy of the vibration waves collected by the hydrophone.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic view of the overall structure of the present invention during detection;
fig. 2 is an exploded view of the base and wedge block assembly structure of the present invention.
Detailed Description
The conception, specific structure and technical effects of the present invention will be described clearly and completely with reference to the accompanying drawings and embodiments, so as to fully understand the objects, aspects and effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Furthermore, the description of the upper, lower, left, right, front, rear, etc. used in the present invention is only relative to the mutual position relationship of the components of the present invention in the drawings.
Furthermore, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any combination of one or more of the associated listed items.
As shown in fig. 1, the utility model relates to a side hole transmission excitation device of an existing pile foundation, which comprises a seismograph 1 and a base 82; the seismograph 1 is respectively connected with a storage battery 11, a seismic source signal receiving device 12, an excitation hand hammer 13 and a hydrophone 14 through leads; the excitation hand hammer 13 can enable the pile foundation 7 to generate excitation waves, the hydrophone 14 is arranged in the pile foundation side hole 15, the hydrophone 14 can receive the excitation waves of the pile foundation 7, and the seismic source signal receiving device 12 can receive excitation wave signals on the hydrophone 14; the base 82 is fastened on the pier stud 5 on the ground surface of the pile foundation 7, and the base 82 is connected with a wedge block 81; the top surface of the wedge block 81 is a plane for the hammer to strike. The base 82 is fastened on the pier stud 5 on the ground surface of the pile foundation 7, and the wedge block 81 is connected to the base 82; the top surface of the wedge block 81 is a plane for the hammer to strike. Compared with the waveform energy generated by only transversely knocking the pier stud 5, the method greatly improves the energy of longitudinal waveforms, and finally greatly improves the accuracy of the vibration waves collected by the hydrophone 14.
As shown in fig. 1 and fig. 2, for the convenience of knocking, a plane of the wedge block 81 on which the hammer strikes is an inclined plane. And simultaneously, for the convenience the utility model discloses an installation and fixed, be equipped with expansion screw 8 on the pier stud 5, just base 82 is fixed in pier stud 5 through expansion screw 8. In addition, in order to ensure the close fit of the base 82 and the pier stud 5, all the energy of knocking can be transmitted to the pile placing foundation 7 as much as possible; the base 82 is provided with a groove 821 matched with the side surface of the pier stud 5. And for the convenience of the utility model, the base 82 is connected with the wedge block 81 through a bolt.
In order to improve the detection accuracy, the distance between the base 82 and the ground surface is less than 10 cm. Meanwhile, the use of scientific research personnel is facilitated, so that the test is convenient; a plurality of bases 82 are arranged on the pier stud 5. Furthermore, in order to guarantee the utility model discloses a life, base 82 and wedge 81 are made by steel.
The above embodiment is only an example of the present invention, and is not intended to limit the scope of the invention, and all equivalent changes and modifications made according to the content of the claims should be included in the claims of the present invention.
Claims (8)
1. The utility model provides a bypass hole transmission method excitation device of existing pile foundation which characterized in that: comprises a seismograph (1) and a base (82); the seismograph (1) is respectively connected with a storage battery (11), a seismic source signal receiving device (12), a vibration exciting hand hammer (13) and a hydrophone (14) through leads; the vibration-exciting hand hammer (13) can enable the pile foundation (7) to generate vibration waves, the hydrophone (14) is arranged in the pile foundation side hole (15), the hydrophone (14) can receive the vibration waves of the pile foundation (7), and the seismic source signal receiving device (12) can receive vibration wave signals on the hydrophone (14); the base (82) is fastened on a pier stud (5) on the ground surface of the pile foundation (7), and a wedge block (81) is connected to the base (82); the top surface of the wedge-shaped block (81) is a plane for the hammer to strike.
2. The apparatus of claim 1, wherein the apparatus comprises: the plane on the wedge-shaped block (81) for the hammer to strike is an inclined plane.
3. The apparatus of claim 1, wherein the apparatus comprises: be equipped with expansion screw (8) on pier stud (5), just base (82) are fixed in pier stud (5) through expansion screw (8).
4. A lateral hole transillumination excitation device for an existing pile foundation as claimed in any one of claims 1 to 3, wherein: and the base (82) is provided with a groove (821) matched with the side surface of the pier stud (5).
5. A lateral hole transillumination excitation device for an existing pile foundation as claimed in any one of claims 1 to 3, wherein: the base (82) is connected with the wedge block (81) through a bolt.
6. A lateral hole transillumination excitation device for an existing pile foundation as claimed in any one of claims 1 to 3, wherein: the distance between the base (82) and the ground surface is less than 10 cm.
7. A lateral hole transillumination excitation device for an existing pile foundation as claimed in any one of claims 1 to 3, wherein: a plurality of bases (82) are arranged on the pier column (5).
8. A lateral hole transillumination excitation device for an existing pile foundation as claimed in any one of claims 1 to 3, wherein: the base (82) and the wedge block (81) are made of steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921277466.0U CN210766918U (en) | 2019-08-06 | 2019-08-06 | Side hole transmission method excitation device of existing pile foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921277466.0U CN210766918U (en) | 2019-08-06 | 2019-08-06 | Side hole transmission method excitation device of existing pile foundation |
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| Publication Number | Publication Date |
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| CN210766918U true CN210766918U (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921277466.0U Active CN210766918U (en) | 2019-08-06 | 2019-08-06 | Side hole transmission method excitation device of existing pile foundation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114965689A (en) * | 2022-04-24 | 2022-08-30 | 浙江省建设工程质量检验站有限公司 | Automatic vibration hammer for side-hole transmission wave method pile foundation detection |
-
2019
- 2019-08-06 CN CN201921277466.0U patent/CN210766918U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114965689A (en) * | 2022-04-24 | 2022-08-30 | 浙江省建设工程质量检验站有限公司 | Automatic vibration hammer for side-hole transmission wave method pile foundation detection |
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