CN214738321U - Device for measuring friction resistance of inner side and outer side of steel pipe pile - Google Patents
Device for measuring friction resistance of inner side and outer side of steel pipe pile Download PDFInfo
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- CN214738321U CN214738321U CN202120375173.7U CN202120375173U CN214738321U CN 214738321 U CN214738321 U CN 214738321U CN 202120375173 U CN202120375173 U CN 202120375173U CN 214738321 U CN214738321 U CN 214738321U
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- pipe pile
- steel pipe
- bottom plate
- measuring
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Abstract
The utility model discloses a measuring device of steel-pipe pile inside and outside frictional resistance, include: the mounting holes comprise a blind hole formed in the upper end face or the lower end face of the bottom plate and an annular groove which is positioned in the bottom plate and communicated with the blind hole; the nuts are clamped in the annular grooves in a one-to-one correspondence manner; one ends of the headless screws are in threaded connection with the nuts in a one-to-one correspondence mode and are installed in the blind holes, and the other ends of the headless screws extend out of the blind holes; and a plurality of sensors mounted on the base plate. The utility model discloses a blind hole on the bottom plate, nut and headless screw's setting make the sensor can measure the inside and outside frictional resistance of steel-pipe pile.
Description
Technical Field
The utility model relates to a measuring device of steel-pipe pile inside and outside friction.
Background
The steel pipe pile is a foundation form which is widely applied, how to correctly evaluate the bearing capacity of the pile, and selecting reasonable design parameters is an important problem related to safety and economy of the pile foundation. The static load test is the most basically and most reliable method for obtaining axial compression resistance, pulling resistance and horizontal bearing capacity of the steel pipe pile.
The static load test needs to calculate the axial force of the pile foundation by measuring the strain of different positions of the pile body, and calculate the side friction resistance provided by each section of soil body through the change of the axial force of the pile foundation.
At present, a sensor is installed on a pile body, generally, only one group of sensors are arranged at the same elevation, the inner side of the pile cannot be separated from the outer side of the pile, the inner side and the outer side of the pile are different in frictional resistance, however, due to the lack of calculation parameters of soil resistance, the inner side and the outer side of the pile are difficult to calculate in the design process, and difficulty is brought to the design process of the steel pipe pile.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a measuring device of steel-pipe pile inside and outside frictional resistance just in order to solve above-mentioned problem, through the setting of blind hole, nut and headless screw on the bottom plate, make the sensor can measure steel-pipe pile inside and outside frictional resistance.
The purpose of the utility model is realized like this:
the utility model discloses a measuring device of steel-pipe pile inside and outside friction resistance, include:
the mounting holes comprise a blind hole formed in the upper end face or the lower end face of the bottom plate and an annular groove which is positioned in the bottom plate and communicated with the blind hole;
the nuts are clamped in the annular grooves in a one-to-one correspondence manner;
one ends of the headless screws are in threaded connection with the nuts in a one-to-one correspondence mode and are installed in the blind holes, and the other ends of the headless screws extend out of the blind holes; and
a plurality of sensors mounted on the base plate.
In the device for measuring the friction resistance inside and outside the steel pipe pile, the number of the mounting holes formed in the upper end face and the lower end face of the bottom plate is greater than or equal to two.
In the above apparatus for measuring the friction inside and outside the steel pipe pile, the sensor is a strain sensor.
In the device for measuring the friction resistance inside and outside the steel pipe pile, the strain sensor at least comprises one of a resistance strain gauge, a fiber grating strain gauge and a vibrating wire strain gauge.
The utility model has the advantages of it is following:
1. the structure is simple, the use is convenient, and the applicable range is wide;
2. through the arrangement of the blind holes, the nuts and the headless screws on the bottom plate, the sensor can measure the friction force of the inner side and the outer side of the steel pipe pile.
Drawings
Fig. 1 is a front view of the present invention;
fig. 2 is a schematic structural diagram of the bottom plate of the present invention;
fig. 3 is a top view of the bottom plate of the present invention;
FIG. 4 is a schematic view of the present invention mounted on a steel pipe pile;
FIG. 5 is a partial enlarged view at E in FIG. 4;
fig. 6 is a partial sectional view of a pile wall of the steel-pipe pile (showing a structure at a mounting position of the present invention);
fig. 7 is a schematic structural view of an installation method of the present invention on a steel pipe pile;
fig. 8 is a schematic structural view of another installation method of the present invention to a steel pipe pile.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1 to 3, the present invention is illustrated in a measuring device for friction inside and outside a steel pipe pile, and the measuring device includes:
the mounting structure comprises a bottom plate 1, wherein a plurality of mounting holes 11 are formed in the upper end surface and the lower end surface of the bottom plate 1, and each mounting hole 11 comprises a blind hole 11a formed in the upper end surface or the lower end surface of the bottom plate 1 and an annular groove 11b which is positioned in the bottom plate 1 and is communicated with the blind hole 11 a;
the nuts 2 are clamped in the annular grooves 11b in a one-to-one correspondence manner;
one ends of the headless screws 3 are in threaded connection with the nuts 2 in a one-to-one correspondence mode and are installed in the blind holes 11a, and the other ends of the headless screws 3 extend out of the blind holes 11 a; and
a plurality of sensors 4 mounted on the base plate 1.
The number of the mounting holes 11 formed in the upper end surface and the lower end surface of the bottom plate 1 is greater than or equal to two.
The sensor 4 is a strain sensor, and the strain sensor at least comprises one of a resistance strain gauge, a fiber grating strain gauge and a vibrating wire strain gauge.
The utility model discloses a use method as follows:
referring to fig. 4 to 7, a method for using the device for measuring the inside and outside friction of a steel pipe pile according to the present invention is shown: firstly, a plurality of square through holes 51 are vertically arranged on the pile wall of the steel pipe pile 5 at intervals, and two rows of threaded holes 52 matched with the headless screws 3 are radially arranged on the top surface and the bottom surface of each square through hole 51 at intervals; then, installing a plurality of measuring devices into the square through holes 51 through the threaded holes 52 respectively, installing two measuring devices into each square through hole 51, installing the two measuring devices in each square through hole 51 into the square through holes 51 through the two rows of threaded holes 52 respectively, enabling the surfaces, provided with the sensors 4, of the bottom plates 1 of the two measuring devices in each square through hole 51 to be opposite, inserting the steel pipe pile 5 under the mud surface 6 after the installation is finished, and starting to measure;
referring to fig. 4 to 6 and 8, another method for using the device for measuring the friction inside and outside the steel pipe pile of the present invention is shown: firstly, a plurality of square through holes 51 are vertically arranged on the pile wall of the steel pipe pile 5 at intervals, a filling plate 7 is arranged in each square through hole 51, the filling plates 7 in two adjacent square through holes 51 are respectively arranged on the inner side surface of one square through hole 51 and the outer side surface of the other square through hole 51, and two rows of threaded holes 52 matched with the headless screws 3 are radially arranged on the top surface and the bottom surface of each square through hole 51 at intervals; then, a plurality of measuring devices are respectively installed in the square through holes 51 through the threaded holes 52, one measuring device and one filling plate 7 are installed in each square through hole 51, the measuring devices in two adjacent square through holes 51 are respectively installed on the outer side face of one square through hole 51 and the inner side face of the other square through hole 51, the sensor 4 on the bottom plate 1 of the measuring device in each square through hole 51 faces the filling plate 7, and after the installation is completed, the steel pipe pile 5 is inserted into the mud surface 6 to start measurement.
The utility model has simple structure and convenient use; through the arrangement of the blind hole 11a, the nut 2 and the headless screw 3 on the bottom plate 1, the sensor 4 can measure the friction force on the inner side and the outer side of the steel pipe pile 5; during measurement, in one using method, the surfaces, provided with the sensors 4, of the bottom plates 1 of the two measuring devices in each square through hole 51 are opposite, the sensors 4 are jointly protected by the bottom plates 1 and the steel pipe piles 5, so that the interference of the external environment is avoided, the friction resistance of the inner side and the outer side of the steel pipe piles can be measured simultaneously, the measuring accuracy is ensured, and the service life of the sensors 4 is prolonged; in another using method, the sensor 4 on the bottom plate 1 of one measuring device in each square through hole 51 faces the filling plate 7, the sensor 4 is protected by the bottom plate 1 and the filling plate 7 together, and the measuring devices in two adjacent square through holes 51 are respectively arranged on the outer side surface of one square through hole 51 and the inner side surface of the other square through hole 51, so that the friction resistance of the inner side and the outer side of the steel pipe pile can be measured simultaneously, and the cost is reduced.
The above embodiments are provided only for the purpose of illustration, not for the limitation of the present invention, and those skilled in the relevant art can make various changes or modifications without departing from the spirit and scope of the present invention, therefore, all equivalent technical solutions should also belong to the scope of the present invention, and should be defined by the claims.
Claims (4)
1. A measuring device for the friction resistance of the inner side and the outer side of a steel pipe pile is characterized by comprising:
the mounting holes comprise a blind hole formed in the upper end face or the lower end face of the bottom plate and an annular groove which is positioned in the bottom plate and communicated with the blind hole;
the nuts are clamped in the annular grooves in a one-to-one correspondence manner;
one ends of the headless screws are in threaded connection with the nuts in a one-to-one correspondence mode and are installed in the blind holes, and the other ends of the headless screws extend out of the blind holes; and
a plurality of sensors mounted on the base plate.
2. The device for measuring the inside and outside friction resistance of a steel pipe pile according to claim 1, wherein the number of the mounting holes formed in the upper end surface and the lower end surface of the bottom plate is two or more.
3. The apparatus for measuring inside and outside friction resistance of a steel pipe pile according to claim 1, wherein the sensor is a strain sensor.
4. The device for measuring inside and outside frictional resistance of a steel pipe pile according to claim 3, wherein the strain sensor includes at least one of a resistance strain gauge, a fiber grating strain gauge and a vibrating wire strain gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120375173.7U CN214738321U (en) | 2021-02-18 | 2021-02-18 | Device for measuring friction resistance of inner side and outer side of steel pipe pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120375173.7U CN214738321U (en) | 2021-02-18 | 2021-02-18 | Device for measuring friction resistance of inner side and outer side of steel pipe pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214738321U true CN214738321U (en) | 2021-11-16 |
Family
ID=78588893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120375173.7U Active CN214738321U (en) | 2021-02-18 | 2021-02-18 | Device for measuring friction resistance of inner side and outer side of steel pipe pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214738321U (en) |
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2021
- 2021-02-18 CN CN202120375173.7U patent/CN214738321U/en active Active
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