CN210459319U - Experimental displacement test integrated device of foundation pile bearing capacity - Google Patents
Experimental displacement test integrated device of foundation pile bearing capacity Download PDFInfo
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- CN210459319U CN210459319U CN201920429567.9U CN201920429567U CN210459319U CN 210459319 U CN210459319 U CN 210459319U CN 201920429567 U CN201920429567 U CN 201920429567U CN 210459319 U CN210459319 U CN 210459319U
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- fixed pulley
- foundation pile
- bearing capacity
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Abstract
The utility model relates to a displacement test integrated device for foundation pile bearing capacity test belongs to foundation pile bearing capacity and detects technical field. The device includes: the displacement testing device, the load box and the protective tube further comprise a first upper displacement wire or a second upper displacement wire and a first lower displacement wire or a second lower displacement wire; the load box comprises an upper cover plate and a lower base plate, and the upper ends of the first upper displacement wires or the second upper displacement wires are connected with the displacement testing device; the utility model discloses laying the construction portably, realizing the stable effective connection of displacement silk and load case, external disturbance and human factor influence in can the better elimination displacement measurement process reduce testing error, improve measurement accuracy.
Description
Technical Field
The utility model relates to a displacement test integrated device for foundation pile bearing capacity test belongs to foundation pile bearing capacity and detects technical field.
Background
In the foundation pile bearing capacity test process, the accurate test of foundation pile displacement is undoubtedly a very important work content, and the foundation pile displacement test is mainly to determine whether the bearing capacity of the foundation pile meets the design requirements according to a load-displacement curve, so that the foundation pile displacement is detected accurately or not, and the importance degree of the foundation pile displacement test is self-evident.
In a foundation pile bearing capacity test commonly used in the prior art, a displacement testing method generally adopts a displacement rod, one end of the displacement rod is connected to a load box, the other end of the displacement rod extends to the ground, the displacement rod is connected with a displacement sensor and used for detecting the displacement of the displacement rod, and foundation pile displacement is obtained according to the displacement of the displacement rod. When the displacement sensor is used, on one hand, a reference beam with enough rigidity and stability is needed for fixing and supporting the displacement sensor, however, the construction of the reference beam is time-consuming and labor-consuming, the reference beam cannot be damaged by touch, a vibration source cannot be arranged nearby, and the influence of sunlight, rain and rain interference and test pile sinking is avoided; on the other hand, in order to obtain the displacement of each measuring point of the foundation pile directly according to the displacement of the displacement rod, the displacement sensor needs to be vertically installed on the displacement rod, so that the requirement on the installation verticality of the displacement sensor is high, the construction difficulty is increased, the test error is greatly influenced by human factors, and the measurement accuracy is influenced.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a displacement test integrated device for foundation pile bearing capacity test lays the construction portably, realizes the stable effective connection of displacement silk and load case, can better eliminate external disturbance and human factor influence among the displacement measurement process, reduces testing error, improves measurement accuracy.
The utility model discloses a realize above-mentioned purpose, adopt following technical scheme:
the utility model provides a displacement test integrated device of foundation pile bearing capacity test, the device includes: the displacement testing device, the load box and the protective tube further comprise a first upper displacement wire or a second upper displacement wire and a first lower displacement wire or a second lower displacement wire;
the load box comprises an upper cover plate and a lower base plate, and the upper ends of the first upper displacement wires or the second upper displacement wires are connected with the displacement testing device;
when using the first upper displacement wire and the first lower displacement wire:
the lower end of the first upper displacement wire penetrates through the protective pipe to be connected with the upper cover plate of the load box, and the lower end of the first lower displacement wire penetrates through the protective pipe to be connected with the lower bottom plate of the load box;
when using a second up-displacement wire and a second down-displacement wire:
the device also comprises an electromagnet device, wherein the electromagnet device comprises an electromagnet, a steel rod and a power line;
the upper ends of the second upper displacement wire and the second lower displacement wire are connected with a displacement testing device, the lower ends of the second upper displacement wire and the second lower displacement wire are connected with an electromagnet through screws, a steel rod is arranged at the lower end of the electromagnet, and the steel rod is fixed on the upper cover plate or the lower bottom plate of the load box.
Furthermore, the displacement testing device comprises a first support, a balancing weight, a guide rod, a first displacement sensor, a displacement contact rod, a first fixed pulley and a second fixed pulley;
the first fixed pulley and the second fixed pulley are respectively installed at two ends of the first support, the upper ends of the first upper displacement wire and the first lower displacement wire are connected with one end of the guide rod by bypassing the first fixed pulley, the other end of the guide rod is connected with the balancing weight through the second fixed pulley, and the side face of the guide rod is connected with the first displacement sensor through the displacement contact rod.
Furthermore, the displacement testing device comprises a second bracket, a guide sleeve, a spring, a mounting plate, a second displacement sensor, a displacement contact piece and a fixed pulley;
the fixed pulley is arranged below one end of the second support, the spring is arranged below the other end of the second support, one end of the spring is connected with the guide sleeve, and the fixed pulley, the spring and the guide sleeve are arranged on the same horizontal axis;
the second displacement sensor is installed on the installation plate above the second support, the installation plate is fixed on the second support of the support through a bolt, the lower portion of the displacement contact piece is located in the guide sleeve clamping groove, and the upper portion of the displacement contact piece is connected with the second displacement sensor.
Furthermore, the first displacement sensor is horizontally arranged on the first bracket;
the second displacement sensor is horizontally arranged on the mounting plate of the second bracket.
Furthermore, the first upper displacement wire, the second upper displacement wire, the first lower displacement wire and the second lower displacement wire are all provided with protective tubes for protection.
Furthermore, the number of the displacement testing devices is equal to the sum of the number of the first upper displacement wires and the number of the first lower displacement wires, and each first upper displacement wire and each first lower displacement wire are correspondingly connected with one displacement testing device;
or the number of the displacement testing devices is equal to the sum of the number of the second upper displacement wires and the number of the second lower displacement wires, and each second upper displacement wire and each second lower displacement wire are correspondingly connected with one displacement testing device.
The test method of the foundation pile bearing capacity test displacement test integrated device comprises the following steps of:
A. in the foundation pile bearing capacity test, when the upper or lower section pile foundation moves up or down, because the straight force of the balancing weight on the other side: under the action of the spring pre-tightening force, the first upper displacement wire and the first lower displacement wire generate corresponding displacement upwards or downwards;
B. the first upper displacement wire and the first lower displacement wire generate upward or downward displacement, and the displacement contact piece in the guide sleeve clamping groove transmits the generated displacement to the first displacement sensor and records the test displacement at the moment;
C. and after the test is finished, taking the first upper displacement wire and the first lower displacement wire out of the protective pipe for recycling.
The test method of the foundation pile bearing capacity test displacement test integrated device comprises the following steps of:
A. before the foundation pile bearing capacity test is started, connecting a power supply to be electrified, placing a power line into a specified position in a protective pipe when the electromagnet is in a nonmagnetic state;
B. and (3) closing the power supply, wherein the electromagnet is in a magnetic state at the moment, carrying out foundation pile bearing capacity test, and when the upper or lower pile foundation moves upwards or downwards, because the counterweight block on the other side is stretched to be straight: under the action of the spring pre-tightening force, the second upper displacement wire and the second lower displacement wire generate corresponding displacement upwards or downwards;
C. the second upper displacement wire and the second lower displacement wire generate upward or downward displacement, and the displacement contact piece in the guide sleeve clamping groove transmits the generated displacement to the second displacement sensor and records the test displacement at the moment;
D. and after the test is finished, taking the second upper displacement wire and the second lower displacement wire out of the protective pipe for recycling.
Through the 2 testing methods, the accuracy of the displacement test can be improved by arranging the upper displacement wires and the lower displacement wires.
Compared with the prior art, the utility model has the advantages of:
1. the traditional foundation pile self-balancing static load test needs to erect a reference beam, the construction of the reference beam is time-consuming and labor-consuming, the utility model does not need to arrange the reference beam and the reference pile, simplifies the detection process and reduces the working strength of detection personnel;
2. the displacement rod is replaced by the displacement wire comprehensively, the displacement wire is a single-stranded or double-stranded steel wire, the performance is good, the weight is light, the flexibility is high, the rigidity is strong, the straightening can be realized without secondary deformation, the displacement transmission is more accurate and sensitive, and the test accuracy is higher;
3. after the self-balancing static load experiment is completed, the displacement wire can be detachably recovered, so that compared with the traditional unrecoverable displacement rod, a large amount of material cost is saved, resources are saved, the detection cost is reduced, and the device is energy-saving and environment-friendly;
4. the displacement sensor is changed from the original vertical installation into the horizontal installation, so that the anti-interference performance is stronger, the stability is better, the reliability is higher, and the displacement test is more accurate.
Drawings
Fig. 1 is a schematic structural diagram of a third embodiment of the present invention;
fig. 2 is an exploded schematic view of a fourth embodiment of the present invention;
fig. 3 is an exploded schematic view of the second and fourth embodiments of the present invention;
fig. 4 is an exploded schematic view of the first and second embodiments of the present invention;
fig. 5 is an exploded schematic view of a first embodiment and a second embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to the following examples:
example one
The utility model provides a displacement test integrated device for foundation pile bearing capacity test, includes: the displacement testing device comprises a displacement testing device, a load box and a protection tube 1, and further comprises a first upper displacement wire 2 and a first lower displacement wire 3, wherein the load box comprises an upper cover plate 4 and a lower bottom plate 5, the upper ends of the first upper displacement wire 2 and the first lower displacement wire 3 are connected with the displacement testing device, the lower end of the first upper displacement wire 2 penetrates through the protection tube 1 to be connected with the upper cover plate 4 of the load box, and the lower end of the first lower displacement wire 3 penetrates through the protection tube 1 to be connected with the lower bottom plate 5 of the load box.
Preferably, the displacement testing device comprises a first bracket 6, a balancing weight 7, a guide rod 8, a first displacement sensor 9, a displacement contact rod 10, a first fixed pulley 11 and a second fixed pulley 12; first fixed pulley 11, second fixed pulley 12 are installed respectively in 6 both ends of first support, and the upper end of going up (down) the displacement silk is walked around first fixed pulley 11 and is connected with 8 one end of guide bar, and the guide bar other end passes through second fixed pulley 12 and is connected with balancing weight 7, and 8 sides of guide bar are connected with first displacement sensor 9 through displacement contact bar 10.
Example two
The utility model provides a displacement test integrated device for foundation pile bearing capacity test, includes: the displacement testing device comprises a displacement testing device, a load box and a protection tube 1, and further comprises a first upper displacement wire 2 and a first lower displacement wire 3, wherein the load box comprises an upper cover plate 4 and a lower bottom plate 5, the upper ends of the upper displacement wire and the lower displacement wire are connected with the displacement testing device, the lower end of the upper displacement wire penetrates through the protection tube 1 to be connected with the upper cover plate 4 of the load box, and the lower end of the lower displacement wire penetrates through the protection tube 1 to be connected with the lower bottom plate 5 of the load box.
Preferably, the displacement testing device comprises a second bracket 6 ', a guide sleeve 13, a spring 14, a mounting plate 15, a second displacement sensor 9', a displacement contact piece 16 and a fixed pulley 17; the fixed pulley 17 is installed below one end of the second support 6 ', the spring 14 is installed below the other end of the second support 6', one end of the spring is connected with the guide sleeve 13, and the fixed pulley 17, the spring 14 and the guide sleeve 13 are installed on the same horizontal axis. The second displacement sensor 9 'is arranged on a mounting plate 15 above the second bracket 6', the mounting plate 15 is fixed on the second bracket 6 'through a bolt, the lower part of the displacement contact piece 16 is positioned in the clamping groove of the guide sleeve 13, and the upper part of the displacement contact piece is connected with the second displacement sensor 9'.
EXAMPLE III
The utility model provides a experimental displacement test integrated device of foundation pile bearing capacity, includes displacement testing arrangement, electromagnet device and load case, still includes first upper displacement silk 2 'and first displacement silk 3' down, electromagnet device includes electro-magnet 18, steel pole 19 and power cord 20, the load case includes upper cover plate 4 and lower plate 5, the upper end of first upper displacement silk 2 'and first displacement silk 3' all is connected with displacement testing arrangement, and the lower extreme passes through the screw to be connected with electro-magnet 18, and the electro-magnet lower extreme is equipped with steel pole 19, and steel pole 19 is fixed in on load case upper cover plate 4 or the lower plate 5.
Preferably, the displacement testing device comprises a first bracket 6, a balancing weight 7, a guide rod 8, a first displacement sensor 9, a displacement contact rod 10, a first fixed pulley 11 and a second fixed pulley 12; first fixed pulley 11, second fixed pulley 12 are installed respectively in 6 both ends of first support, and the upper end of going up (down) the displacement silk is walked around first fixed pulley 11 and is connected with 8 one ends of guide bar, and the 8 other ends of guide bar are connected with balancing weight 7 through second fixed pulley 12, and 8 sides of guide bar are connected with first displacement sensor 9 through displacement contact bar 10.
Example four
The utility model provides a experimental displacement test integrated device of foundation pile bearing capacity, includes displacement testing arrangement, electromagnet device and load case, still includes first upper displacement silk 2 'and first displacement silk 3' down, electromagnet device includes electro-magnet 18, steel pole 19 and power cord 20, the load case includes upper cover plate 4 and lower plate 5, the upper end of first upper displacement silk 2 'and first displacement silk 3' all is connected with displacement testing arrangement, and the lower extreme passes through the screw to be connected with electro-magnet 18, and the electro-magnet lower extreme is equipped with steel pole 19, and steel pole 19 is fixed in on load case upper cover plate 4 or the lower plate 5.
Preferably, the displacement testing device comprises a second bracket 6 ', a guide sleeve 13, a spring 14, a mounting plate 15, a second displacement sensor 9', a displacement contact piece 16 and a fixed pulley 17; the fixed pulley 17 is installed below one end of the second support 6 ', the spring 14 is installed below the other end of the second support 6', one end of the spring 14 is connected with the guide sleeve 13, and the fixed pulley 17, the spring 14 and the guide sleeve 13 are installed on the same horizontal axis. The second displacement sensor 9 'is arranged on a mounting plate 15 above the second bracket 6', the mounting plate 15 is fixed on the second bracket 6 'through a bolt, the lower part of the displacement contact piece 16 is positioned in the clamping groove of the guide sleeve 13, and the upper part of the displacement contact piece is connected with the second displacement sensor 9'.
In the first and third embodiments, the displacement sensor is horizontally mounted and horizontally placed on the bracket; in the second and fourth embodiments, the displacement sensor is horizontally mounted on the mounting plate of the bracket.
In the above 4 technical schemes, the outer parts of the upper displacement wire and the lower displacement wire are respectively provided with a protective tube for protection.
Preferably, the number of the displacement testing devices is equal to the sum of the numbers of the upper displacement wires and the lower displacement wires, and each upper displacement wire or each lower displacement wire is correspondingly connected with one displacement testing device.
The test method of the foundation pile bearing capacity test displacement test integrated device comprises the following steps that when the first upper displacement wire 2 and the first lower displacement wire 3 are used:
A. in the foundation pile bearing capacity test, when the upper or lower section pile foundation moves up or down, because the straight force of the balancing weight on the other side: under the action of the spring pre-tightening force, the first upper displacement wire 2 and the first lower displacement wire 3 generate corresponding displacement upwards or downwards;
B. the first upper displacement wire 2 and the first lower displacement wire 3 generate upward or downward displacement, and the displacement contact rod and the displacement contact piece in the guide sleeve clamping groove are connected through the side surface of the guide rod, transmit the generated displacement to the first displacement sensor and record the test displacement at the moment;
C. and after the test is finished, taking the first upper displacement wire 2 and the first lower displacement wire 3 out of the protective pipe for recycling.
The test method of the foundation pile bearing capacity test displacement test integrated device comprises the following steps that when a second upper displacement wire 2 'and a second lower displacement wire 3' are used:
A. before the foundation pile bearing capacity test is started, connecting a power supply to be electrified, placing a power line into a specified position in a protective pipe when the electromagnet is in a nonmagnetic state;
B. and (3) closing the power supply, wherein the electromagnet is in a magnetic state at the moment, carrying out foundation pile bearing capacity test, and when the upper or lower pile foundation moves upwards or downwards, because the counterweight block on the other side is stretched to be straight: under the action of the spring pre-tightening force, the second upper displacement wire 2 'and the second lower displacement wire 3' generate corresponding displacement upwards or downwards;
C. the second upper displacement wire 2 ' and the second lower displacement wire 3 ' generate upward or downward displacement, and the displacement contact rod and the displacement contact piece in the guide sleeve clamping groove are connected through the side surface of the guide rod, so that the generated displacement is transmitted to the second displacement sensor 9 ', and the test displacement at the moment is recorded;
D. and after the test is finished, taking the second upper displacement wire 2 'and the second lower displacement wire 3' out of the protective tube for recycling.
It is noted that the basic principles and the main features of the present invention and the advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a displacement test integrated device for foundation pile bearing capacity test, its characterized in that, the device includes: the displacement testing device comprises a displacement testing device, a load box and a protective pipe (1), and further comprises a first upper displacement wire (2) or a second upper displacement wire (2 ') and a first lower displacement wire (3) or a second lower displacement wire (3');
the load box comprises an upper cover plate (4) and a lower base plate (5), and the upper ends of the first upper displacement wires (2) or the second upper displacement wires (2') are connected with a displacement testing device;
when using the first upper displacement wire (2) and the first lower displacement wire (3):
the lower end of the first upper displacement wire (2) penetrates through the protective pipe (1) to be connected with an upper cover plate (4) of the load box, and the lower end of the first lower displacement wire (3) penetrates through the protective pipe (1) to be connected with a lower bottom plate (5) of the load box;
when using a second upper displacement wire (2 ') and a second lower displacement wire (3'):
the device also comprises an electromagnet device, wherein the electromagnet device comprises an electromagnet (18), a steel rod (19) and a power line (20);
the upper ends of the second upper displacement wire (2 ') and the second lower displacement wire (3') are connected with a displacement testing device, the lower ends of the second upper displacement wire and the second lower displacement wire are connected with an electromagnet (18) through screws, a steel rod (19) is arranged at the lower end of the electromagnet (18), and the steel rod (19) is fixed on the upper cover plate (4) or the lower bottom plate (5) of the load box.
2. The foundation pile bearing capacity test displacement test integrated device of claim 1, wherein:
the displacement testing device comprises a first support (6), a balancing weight (7), a guide rod (8), a first displacement sensor (9), a displacement contact rod (10), a first fixed pulley (11) and a second fixed pulley (12);
first fixed pulley (11) and second fixed pulley (12) are installed respectively in first support (6) both ends, and the upper end of first upper displacement silk (2) and first lower displacement silk (3) is walked around first fixed pulley (11) and is connected with guide bar (8) one end, and the guide bar (8) other end is connected with balancing weight (7) through second fixed pulley (12), and guide bar (8) side is connected with first displacement sensor (9) through displacement contact lever (10).
3. The foundation pile bearing capacity test displacement test integrated device of claim 1, wherein:
the displacement testing device comprises a second support (6 '), a guide sleeve (13), a spring (14), a mounting plate (15), a second displacement sensor (9'), a displacement contact piece (16) and a fixed pulley (17);
the fixed pulley (17) is arranged below one end of the second support (6 '), the spring (14) is arranged below the other end of the second support (6'), one end of the spring (14) is connected with the guide sleeve (13), and the fixed pulley (17), the spring (14) and the guide sleeve (13) are arranged on the same horizontal axis;
the second displacement sensor (9 ') is installed on the installation plate (15) above the second support (6'), the installation plate (15) is fixed on the second support (6 ') of the support through bolts, the lower portion of the displacement contact piece (16) is located in the clamping groove of the guide sleeve (13), and the upper portion of the displacement contact piece (16) is connected with the second displacement sensor (9').
4. The foundation pile bearing capacity test displacement test integrated device of claim 1, wherein: the first upper displacement wire (2), the second upper displacement wire (2 '), the first lower displacement wire (3) and the second lower displacement wire (3') are all protected by protective tubes (1) outside.
5. The foundation pile bearing capacity test displacement test integrated device of claim 1, wherein:
the number of the displacement testing devices is equal to the sum of the number of the first upper displacement wires (2) and the number of the first lower displacement wires (3), and each first upper displacement wire (2) and each first lower displacement wire (3) are correspondingly connected with one displacement testing device;
or the number of the displacement testing devices is equal to the sum of the number of the second upper displacement wires (2 ') and the number of the second lower displacement wires (3'), and each second upper displacement wire (2 ') and each second lower displacement wire (3') is correspondingly connected with one displacement testing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920429567.9U CN210459319U (en) | 2019-04-01 | 2019-04-01 | Experimental displacement test integrated device of foundation pile bearing capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920429567.9U CN210459319U (en) | 2019-04-01 | 2019-04-01 | Experimental displacement test integrated device of foundation pile bearing capacity |
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| Publication Number | Publication Date |
|---|---|
| CN210459319U true CN210459319U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920429567.9U Expired - Fee Related CN210459319U (en) | 2019-04-01 | 2019-04-01 | Experimental displacement test integrated device of foundation pile bearing capacity |
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| Country | Link |
|---|---|
| CN (1) | CN210459319U (en) |
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2019
- 2019-04-01 CN CN201920429567.9U patent/CN210459319U/en not_active Expired - Fee Related
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