CN112982355A - Comprehensive foundation coefficient testing device and method - Google Patents
Comprehensive foundation coefficient testing device and method Download PDFInfo
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- CN112982355A CN112982355A CN202110317345.XA CN202110317345A CN112982355A CN 112982355 A CN112982355 A CN 112982355A CN 202110317345 A CN202110317345 A CN 202110317345A CN 112982355 A CN112982355 A CN 112982355A
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- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
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Abstract
The invention provides a comprehensive foundation coefficient testing device and a method, wherein the device comprises: the test device comprises a longitudinal bearing steel truss girder, a K30 test device, a bearing plate, a transverse connecting steel truss girder and a mobile device, wherein the K30 test device is arranged below each span of the longitudinal bearing steel truss girder, and the K30 test device comprises a jack; the bearing plate is arranged on the top surface of the longitudinal bearing steel truss girder, and sandbags are uniformly arranged on the bearing plate; the transverse connecting steel trussed beam is arranged between two adjacent longitudinal bearing steel trussed beams and is used for transversely connecting the two longitudinal bearing steel trussed beams, and the transverse connecting steel trussed beam and the longitudinal bearing steel trussed beams form a net-shaped frame structure; the mobile device is used for moving the net-shaped frame structure to the next road section so as to carry out comprehensive foundation coefficient test on the next road section. The invention provides a rapid testing device aiming at the detection of comprehensive foundation coefficients, and the working efficiency of the detection of the whole road section is effectively improved.
Description
Technical Field
The invention relates to the technical field of railway engineering, in particular to a comprehensive foundation coefficient testing device and method.
Background
The detection quantity and the detection method aiming at the conventional foundation coefficient K30 have the following defects: each test result can only represent the foundation coefficient of a detection point, and the foundation coefficient of a detection road section is difficult to comprehensively explain; and fewer detection points are more difficult to represent the compaction condition of the whole road section; the road roller is used as a traditional method of a counterforce device, a test instrument is inconvenient to install, and the working efficiency is low; the traditional method can only test the foundation coefficient of one point at a time, and the whole-section detection work efficiency is low.
Disclosure of Invention
The invention aims to provide a comprehensive foundation coefficient testing device and method to solve the problems.
In order to achieve the above object, the embodiments of the present application provide the following technical solutions:
on one hand, the embodiment of the application provides a comprehensive foundation coefficient testing device, which comprises a longitudinal bearing steel truss, a K30 testing device, a bearing plate, a transverse connecting steel truss and a mobile device, wherein the K30 testing device is arranged below each span of the longitudinal bearing steel truss, and the K30 testing device comprises a jack; the bearing plate is arranged on the top surface of the longitudinal bearing steel truss girder, and sandbags are uniformly arranged on the bearing plate; the transverse connecting steel trussed beam is arranged between two adjacent longitudinal bearing steel trussed beams and is used for transversely connecting the two longitudinal bearing steel trussed beams, and the transverse connecting steel trussed beam and the longitudinal bearing steel trussed beams form a net-shaped frame structure; the mobile device is used for moving the net-shaped frame structure to the next road section so as to carry out comprehensive foundation coefficient test on the next road section.
Optionally, the moving device comprises a column, a roller device, a braking device, a chute, a traction device and a steel wire rope, the top end of the upright post is connected with the lower end of the longitudinal bearing steel truss girder, the bottom of the upright post is provided with a sleeve, the roller device comprises a screw rod, a roller and a connecting piece, the connecting piece comprises a top plate and a rolling shaft, the roller is arranged on the rolling shaft, the screw is arranged on the top plate, the sleeve is connected with the screw, the braking device is arranged on the top plate and is positioned right above the roller, the sliding groove is longitudinally laid along the roadbed and is arranged below the roller device, and the roller of the roller device is transversely clamped, so that the roller rolls in the chute, one end of the steel wire rope is connected to the traction equipment, and the other end of the steel wire rope is connected to the middle position of the net-shaped frame structure.
Optionally, when the number of the longitudinal bearing steel trusses is odd, the other end of the steel wire rope is connected to the longitudinal bearing steel trusses located at the middle position of the net-shaped frame structure, when the number of the longitudinal bearing steel trusses is even, the other end of the steel wire rope is connected to the transverse connecting steel trusses located at the middle position of the net-shaped frame structure, the braking device is a bolt member installed on a top plate of the connecting member, the bolt member is located right above the roller, the braking function of the roller is achieved through friction force between the bolt member and the roller, the number of the columns is several, and the columns are installed at the lower ends of two sides of the longitudinal bearing steel trusses and are evenly distributed on each side of the longitudinal bearing steel trusses.
Optionally, the two adjacent longitudinal bearing steel trusses include a first longitudinal bearing steel truss and a second longitudinal bearing steel truss, the transverse connection steel truss is connected between one end of the first longitudinal bearing steel truss and one end of the second longitudinal bearing steel truss, and the transverse connection steel truss is also connected between the other end of the first longitudinal bearing steel truss and the other end of the second longitudinal bearing steel truss.
In a second aspect, an embodiment of the present application provides a comprehensive foundation coefficient testing method, where the method includes:
acquiring first input information, wherein the first input information comprises confirmation information of the installed comprehensive foundation coefficient testing device;
sending a first control command, wherein the first control command comprises a command that a jack applies pressure to a foundation;
acquiring at least two first test data, wherein the first test data comprise test data of a current detection point acquired by a K30 test device, and the first test data comprise a first road foundation settlement amount measured value and a first road foundation loading stress;
calculating to obtain a first road base settlement theoretical value based on the at least two first test data, and calculating to obtain a comprehensive foundation coefficient of the current detection road section according to the first road base loading stress and the first road base settlement theoretical value;
and sending a second control command, wherein the second control command comprises a command for controlling a mobile device to pull the comprehensive foundation coefficient testing device to move to the next detection road section.
Optionally, the calculating, based on the at least two first test data, to obtain a theoretical value of first road base settlement, and calculating, according to the loading stress of the first road base and the theoretical value of the first road base settlement, to obtain a comprehensive foundation coefficient of the current detected road section includes:
carrying out nonlinear fitting on the at least two first test data by adopting a least square method, determining a nonlinear model, and obtaining a fitting value of the subgrade settlement based on the first subgrade loading stress and the nonlinear model;
obtaining a regression coefficient vector based on the first path subgrade settlement measured value and the fitting value of the subgrade settlement;
based on the regression coefficient vector, substituting the first path base loading stress into the nonlinear model to calculate a theoretical value of subgrade settlement;
and obtaining a comprehensive foundation coefficient of the current detection road section based on the first road foundation loading stress and the theoretical value of the subgrade settlement.
Optionally, obtaining a regression coefficient vector based on the first road base settlement actual measurement value and the fitting value of the road base settlement, including:
obtaining the error square sum of the first road base settlement amount measured value and the fitting value of the road base settlement amount based on the first road base settlement amount measured value and the fitting value of the road base settlement amount;
and solving the partial derivative of the error sum of squares by adopting a vector partial derivative derivation rule, and enabling the partial derivative to be zero to obtain the regression coefficient vector of the nonlinear model which enables the error sum of squares to be minimum.
Optionally, obtaining a comprehensive foundation coefficient of the current detected road section based on the first road foundation loading stress and the theoretical value of the subgrade settlement includes:
drawing a relation curve of the first road base loading stress and the theoretical value of the road base settlement based on the first road base loading stress and the theoretical value of the road base settlement;
and obtaining the comprehensive foundation coefficient of the current detection road section according to the relation curve of the first road foundation loading stress and the theoretical value of the subgrade settlement.
Optionally, after obtaining a theoretical value of the first road base settlement amount by calculation based on the at least two first test data, and obtaining a comprehensive foundation coefficient of the current detected road section by calculation according to the first road base loading stress and the theoretical value of the first road base settlement amount, the method further includes:
acquiring a roadbed compaction acceptance standard;
comparing the roadbed compaction acceptance standard with the comprehensive foundation coefficient of the current detection road section to obtain a comprehensive evaluation result of the roadbed compaction quality;
correspondingly generating different types of prompt codes according to the comprehensive evaluation results of different roadbed compaction qualities;
and sending different types of notification information according to the different types of prompt codes so as to prompt related personnel to perform corresponding processing.
Optionally, the sending a second control command, where the second control command includes a command for controlling a mobile device to pull the comprehensive foundation coefficient testing apparatus to move to a next detected road segment, further includes:
sending a third control command, wherein the second operation command comprises a command that the jack applies pressure to the foundation;
acquiring at least two second test data, wherein the second test data comprise test data of a detection point in the next detection road section, which are acquired by a K30 test device, and the second test data comprise a second road base settlement amount measured value and a second road base loading stress;
and calculating to obtain a theoretical value of the second subgrade settlement based on the second test data, and obtaining the comprehensive subgrade coefficient of the next detection road section according to the second subgrade loading stress and the theoretical value of the second subgrade settlement.
The invention has the beneficial effects that:
1. the invention provides a rapid testing device aiming at the detection of comprehensive foundation coefficients, and the working efficiency of the detection of the whole road section is effectively improved.
2. The invention provides a concept of comprehensive foundation coefficients, performs multi-point simultaneous detection on a detected road section, performs nonlinear regression processing on test data to obtain specific numerical values of the comprehensive foundation coefficients, and performs comprehensive evaluation on the roadbed compaction condition of the detected road section by combining with standard evaluation indexes, so that the evaluation indexes are more in line with actual conditions.
3. The pulley and the braking device are arranged at the bottom of the device, and the sliding groove is arranged along the line, so that the mobility and the braking performance of the device are realized, the rapid transfer and the continuous operation of a detection point are further realized, and the detection working efficiency of a test roadbed is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of an integrated ground coefficient testing device according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a longitudinal load-bearing steel truss according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a K30 test apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a roller device according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a chute according to an embodiment of the present invention;
FIG. 6 is a flow chart of a comprehensive foundation coefficient testing method according to an embodiment of the present invention.
The labels in the figure are: 1. longitudinal load-bearing steel trusses; 2. a carrier plate; 3. transversely connecting the steel trussed beams; 4. a column; 5. a roller device; 6. a braking device; 7. a chute; 8. a pulling device; 9. a wire rope; 10. test set-up K30; 51. a screw; 52. a roller; 53. a connecting member.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers or letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Example 1
As shown in fig. 1-3, the present embodiment provides a comprehensive foundation coefficient testing device, the device includes a longitudinal load-bearing steel truss 1, a K30 testing device 10, a loading plate 2, a transverse connection steel truss 3 and a mobile device, the K30 testing device 10 is installed below each span of the longitudinal load-bearing steel truss 1, and the K30 testing device 10 includes a jack; the bearing plate 2 is arranged on the top surface of the longitudinal bearing steel truss girder 1, and sand bags are uniformly arranged on the bearing plate 2; the transverse connecting steel truss girder 3 is arranged between two adjacent longitudinal bearing steel truss girders 1 and is used for transversely connecting the two longitudinal bearing steel truss girders 1, and the transverse connecting steel truss girder 3 and the longitudinal bearing steel truss girders 1 form a net-shaped frame structure; the mobile device is used for moving the net-shaped frame structure to the next road section so as to carry out comprehensive foundation coefficient test on the next road section.
The foundation coefficient K30 in the embodiment is one of the main indexes of the new railway control foundation bed and embankment packing compaction quality, and is the magnitude representing the compressibility of the soil surface under the action of plane pressure.
Aiming at the problem of low detection efficiency of the traditional method, the invention designs the multi-span assembly type steel truss, a test instrument is arranged in the middle of each span, and the steel truss is uniformly distributed with constant load, namely, the sandbags are used for resisting the jacking load applied by a jack in the test process, and the roadbed is reversely loaded through the interaction of force, so that the roadbed multipoint simultaneous test is realized.
The device in the embodiment adopts a steel truss girder design, the span and the number of truss pieces can be freely assembled and designed along the longitudinal direction and the transverse direction of a line according to actual requirements, and the assembly of the device is realized; and the detection test of the multi-point foundation coefficient can be simultaneously carried out, and a detection means is provided for the comprehensive foundation coefficient.
As shown in fig. 4-5, in a specific embodiment of the present disclosure, the moving device includes a column 4, a roller device 5, a braking device 6, a sliding chute 7, a traction device, and a wire rope 9, a top end of the column 4 is connected to a lower end of the longitudinal load-bearing steel truss 1, a bottom of the column 4 is provided with a sleeve, the roller device 5 includes a screw 51, a roller 52, and a connecting member 53, the connecting member 53 includes a top plate and a roller, the roller 52 is mounted on the roller, the screw 51 is mounted on the top plate, the sleeve is connected to the screw 51, the braking device 6 is mounted on the top plate and located directly above the roller 52, the sliding chute 7 is laid longitudinally along a road bed, the sliding chute 7 is disposed below the roller device 5 and laterally blocks the roller 52 of the roller device 5, the roller 52 rolls in the chute 7, one end of the steel wire rope 9 is connected to the traction device 8, and the other end of the steel wire rope is connected to the middle position of the net-shaped frame structure.
In the embodiment, the pulley and the brake device are arranged at the bottom of the upright column, the sliding groove is arranged along the line direction, the pulley is arranged in the sliding groove, and the net-shaped frame structure is pulled to move by traction equipment such as a road roller or a winch, so that the rapid detection of the test road section can be realized, and the working efficiency is greatly improved.
In one embodiment of the present disclosure, when the number of the longitudinal load-bearing steel girders 1 is odd, the other end of the steel wire rope 9 is connected to the longitudinal bearing steel truss girder 1 positioned in the middle of the net-shaped frame structure, when the number of the longitudinal bearing steel trussed beams 1 is even, the other end of the steel wire rope 9 is connected to the transverse connecting steel trussed beam 3 positioned in the middle of the reticular frame structure, the stopper 6 is a bolt member mounted on the top plate of the link 53, which is positioned directly above the roller 52, the braking function of the roller 52 is achieved by the frictional force between the bolt member and the roller 52, the number of the upright columns 4 is a plurality, and the upright columns 4 are arranged at the lower ends of two sides of the longitudinal bearing steel truss girder 1 and are uniformly distributed on each side of the longitudinal bearing steel truss girder 1.
In a specific embodiment of the present disclosure, two adjacent longitudinal load-bearing steel trusses 1 include a first longitudinal load-bearing steel truss and a second longitudinal load-bearing steel truss, the transverse connection steel truss 3 is connected between one end of the first longitudinal load-bearing steel truss and one end of the second longitudinal load-bearing steel truss, and the transverse connection steel truss 3 is also connected between the other end of the first longitudinal load-bearing steel truss and the other end of the second longitudinal load-bearing steel truss.
Example 2
As shown in fig. 6, the present embodiment provides a comprehensive foundation coefficient testing method, which includes step S1, step S2, step S3, step S4, and step S5.
Step S1, acquiring first input information, wherein the first input information comprises confirmation information of the installed comprehensive foundation coefficient testing device;
step S2, sending a first control command, wherein the first control command comprises a command that a jack applies pressure to a foundation;
step S3, obtaining at least two first test data, wherein the first test data comprise test data of a current detection point acquired by a K30 test device, and the first test data comprise a first road foundation settlement amount measured value and a first road foundation loading stress;
step S4, calculating to obtain a theoretical value of the first road base settlement based on the at least two first test data, and calculating to obtain a comprehensive foundation coefficient of the current detection road section according to the loading stress of the first road base and the theoretical value of the first road base settlement;
and step S5, sending a second control command, wherein the second control command comprises a command for controlling the mobile equipment to pull the comprehensive foundation coefficient testing device to move to the next detection road section.
The embodiment provides a comprehensive foundation coefficient concept, road-based multipoint detection data are subjected to nonlinear regression processing to obtain comprehensive foundation coefficients, and comprehensive evaluation is performed according to the detected roadbed compaction condition. The comprehensive ground coefficient represents the compaction condition of the whole detection roadbed, and is closer to the actual condition.
In a specific embodiment of the present disclosure, the step S4 may further include a step S41, a step S42, a step S43, and a step S44.
Step S41, performing nonlinear fitting on the at least two first test data by adopting a least square method, determining a nonlinear model, and obtaining a fitting value of the subgrade settlement based on the first subgrade loading stress and the nonlinear model;
step S42, obtaining a regression coefficient vector based on the measured value of the first road base settlement amount and the fitting value of the road base settlement amount;
step S43, based on the regression coefficient vector, substituting the first path base loading stress into the nonlinear model to calculate a theoretical value of subgrade settlement;
and step S44, obtaining a comprehensive foundation coefficient of the current detection road section based on the first road foundation loading stress and the theoretical value of the subgrade settlement.
In a specific embodiment of the present disclosure, the step S42 may further include a step S421 and a step S422.
Step S421, obtaining the error square sum of the first road base settlement amount measured value and the fitting value of the road base settlement amount based on the first road base settlement amount measured value and the fitting value of the road base settlement amount;
step S422, the deviation of the error sum of squares is calculated by adopting a vector partial derivative derivation rule, the deviation is made to be zero, and the regression coefficient vector of the nonlinear model which enables the error sum of squares to be minimum is calculated.
In a specific embodiment of the present disclosure, the step S44 may further include a step S441 and a step S442.
Step S441, based on the first road base loading stress and the theoretical value of the road base settlement, drawing a relation curve of the first road base loading stress and the theoretical value of the road base settlement;
and step S442, obtaining a comprehensive foundation coefficient of the current detection road section according to the relation curve of the first road foundation loading stress and the theoretical value of the subgrade settlement.
In a specific embodiment of the present disclosure, after the step S4, the method may further include a step S6, a step S7, a step S8, and a step S9.
Step S6, obtaining roadbed compaction acceptance criteria;
step S7, comparing the roadbed compaction acceptance standard with the comprehensive foundation coefficient of the current detection road section to obtain a comprehensive evaluation result of roadbed compaction quality;
step S8, correspondingly generating different types of prompt codes according to the comprehensive evaluation results of different roadbed compaction qualities;
and step S9, sending different types of notification information according to the different types of prompt codes to prompt related personnel to perform corresponding processing.
The comprehensive evaluation is carried out on the roadbed compaction condition of the detection road section by combining the comprehensive foundation coefficient and the standard evaluation index, different types of prompt codes are generated according to the comprehensive evaluation result, the compaction quality of the current roadbed can be more visually checked, the relevant workers can carry out subsequent operation more conveniently, and the working efficiency is improved.
In a specific embodiment of the present disclosure, after the step S5, the method may further include a step S10, a step S11 and a step S12.
Step S10, sending a third control command, wherein the second operation command comprises a command that the jack applies pressure to the foundation;
step S11, obtaining at least two second test data, wherein the second test data comprise test data of a detection point in the next detection road section, which are acquired by a K30 test device, and the second test data comprise a second road base settlement amount measured value and a second road base loading stress;
and step S12, calculating to obtain a theoretical value of the second subgrade settlement based on the second test data, and obtaining a comprehensive foundation coefficient of the next detected road section according to the second subgrade loading stress and the theoretical value of the second subgrade settlement.
In this embodiment, after the comprehensive foundation coefficient testing device moves to the command of the next detection road section, the test data acquisition work of the K30 testing device is performed again, so that the continuous detection operation can be performed on the detected roadbed, and the detection efficiency is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A comprehensive foundation coefficient testing device is characterized by comprising:
a longitudinal load-bearing steel truss beam (1);
a K30 test rig (10), the K30 test rig (10) being mounted below each span of the longitudinal load bearing steel truss beam (1), the K30 test rig (10) comprising a jack;
the bearing plate (2), the bearing plate (2) is installed on the top surface of the longitudinal bearing steel truss girder (1), and sand bags are uniformly arranged on the bearing plate (2);
the transverse connecting steel trussed beam (3) is arranged between two adjacent longitudinal bearing steel trussed beams (1) and used for transversely connecting the two longitudinal bearing steel trussed beams (1), and the transverse connecting steel trussed beam (3) and the longitudinal bearing steel trussed beams (1) form a net-shaped frame structure; and
and the mobile equipment is used for moving the net-shaped frame structure to the next road section so as to carry out comprehensive foundation coefficient test on the next road section.
2. The comprehensive foundation coefficient testing device according to claim 1, wherein the moving device comprises an upright (4), a roller device (5), a braking device (6), a sliding chute (7), a traction device and a steel wire rope (9), the top end of the upright (4) is connected with the lower end of the longitudinal bearing steel truss girder (1), a sleeve is arranged at the bottom of the upright (4), the roller device (5) comprises a screw rod (51), a roller (52) and a connecting piece (53), the connecting piece (53) comprises a top plate and a roller, the roller (52) is arranged on the roller, the screw rod (51) is arranged on the top plate, the sleeve is connected with the screw rod (51), the braking device (6) is arranged on the top plate and is positioned right above the roller (52), and the sliding chute (7) is longitudinally laid along a roadbed, the sliding groove (7) is arranged below the roller device (5) and transversely clamps the roller (52) of the roller device (5), so that the roller (52) rolls in the sliding groove (7), one end of the steel wire rope (9) is connected to the traction equipment (8), and the other end of the steel wire rope is connected to the middle position of the net-shaped frame structure.
3. The comprehensive foundation coefficient testing device according to claim 2, wherein when the number of the longitudinal load-bearing steel girders (1) is odd, the other end of the wire rope (9) is connected to the longitudinal load-bearing steel girder (1) at the middle of the lattice structure, when the number of the longitudinal load-bearing steel girders (1) is even, the other end of the wire rope (9) is connected to the transverse connection steel girder (3) at the middle of the lattice structure, the braking device (6) is a bolt member installed on the top plate of the connecting member (53), the bolt member is located right above the roller (52), the braking function of the roller (52) is realized by the friction force between the bolt member and the roller (52), the number of the columns (4) is several, the columns (4) are installed at the lower ends of both sides of the longitudinal load-bearing steel girder (1), and are evenly distributed on each side of the longitudinal load-bearing steel girder (1).
4. The comprehensive foundation coefficient testing device of claim 1, wherein the adjacent two longitudinal load-bearing steel trusses (1) comprise a first longitudinal load-bearing steel truss and a second longitudinal load-bearing steel truss, the transverse connecting steel truss (3) is connected between one end of the first longitudinal load-bearing steel truss and one end of the second longitudinal load-bearing steel truss, and the transverse connecting steel truss (3) is also connected between the other end of the first longitudinal load-bearing steel truss and the other end of the second longitudinal load-bearing steel truss.
5. A comprehensive foundation coefficient testing method is characterized by comprising the following steps:
acquiring first input information, wherein the first input information comprises confirmation information of the installed comprehensive foundation coefficient testing device;
sending a first control command, wherein the first control command comprises a command that a jack applies pressure to a foundation;
acquiring at least two first test data, wherein the first test data comprise test data of a current detection point acquired by a K30 test device, and the first test data comprise a first road foundation settlement amount measured value and a first road foundation loading stress;
calculating to obtain a first road base settlement theoretical value based on the at least two first test data, and calculating to obtain a comprehensive foundation coefficient of the current detection road section according to the first road base loading stress and the first road base settlement theoretical value;
and sending a second control command, wherein the second control command comprises a command for controlling a mobile device to pull the comprehensive foundation coefficient testing device to move to the next detection road section.
6. The method for testing comprehensive foundation coefficients according to claim 5, wherein the step of calculating a theoretical value of a first road base settlement amount based on the at least two first test data and calculating a comprehensive foundation coefficient of a current detection road section according to the first road base loading stress and the theoretical value of the first road base settlement amount comprises the steps of:
carrying out nonlinear fitting on the at least two first test data by adopting a least square method, determining a nonlinear model, and obtaining a fitting value of the subgrade settlement based on the first subgrade loading stress and the nonlinear model;
obtaining a regression coefficient vector based on the first path subgrade settlement measured value and the fitting value of the subgrade settlement;
based on the regression coefficient vector, substituting the first path base loading stress into the nonlinear model to calculate a theoretical value of subgrade settlement;
and obtaining a comprehensive foundation coefficient of the current detection road section based on the first road foundation loading stress and the theoretical value of the subgrade settlement.
7. The method of claim 6, wherein obtaining a regression coefficient vector based on the measured value of the first road base settlement amount and the fitted value of the road base settlement amount comprises:
obtaining the error square sum of the first road base settlement amount measured value and the fitting value of the road base settlement amount based on the first road base settlement amount measured value and the fitting value of the road base settlement amount;
and solving the partial derivative of the error sum of squares by adopting a vector partial derivative derivation rule, and enabling the partial derivative to be zero to obtain the regression coefficient vector of the nonlinear model which enables the error sum of squares to be minimum.
8. The method for testing the comprehensive foundation coefficient according to claim 6, wherein the obtaining the comprehensive foundation coefficient of the current detected section based on the first roadbed loading stress and the roadbed settlement theoretical value comprises:
drawing a relation curve of the first road base loading stress and the theoretical value of the road base settlement based on the first road base loading stress and the theoretical value of the road base settlement;
and obtaining the comprehensive foundation coefficient of the current detection road section according to the relation curve of the first road foundation loading stress and the theoretical value of the subgrade settlement.
9. The method for testing comprehensive foundation coefficients according to claim 5, wherein the step of calculating a theoretical value of a first road base settlement amount based on the at least two first test data and calculating a comprehensive foundation coefficient of a current detected road section according to the first road base loading stress and the theoretical value of the first road base settlement amount further comprises:
acquiring a roadbed compaction acceptance standard;
comparing the roadbed compaction acceptance standard with the comprehensive foundation coefficient of the current detection road section to obtain a comprehensive evaluation result of the roadbed compaction quality;
correspondingly generating different types of prompt codes according to the comprehensive evaluation results of different roadbed compaction qualities;
and sending different types of notification information according to the different types of prompt codes so as to prompt related personnel to perform corresponding processing.
10. The comprehensive ground coefficient testing method according to claim 5, wherein after sending a second control command, the second control command comprising a command for controlling a mobile device to pull the comprehensive ground coefficient testing device to move to a next testing section, the method further comprises:
sending a third control command, wherein the second operation command comprises a command that the jack applies pressure to the foundation;
acquiring at least two second test data, wherein the second test data comprise test data of a detection point in the next detection road section, which are acquired by a K30 test device, and the second test data comprise a second road base settlement amount measured value and a second road base loading stress;
and calculating to obtain a theoretical value of the second subgrade settlement based on the second test data, and obtaining the comprehensive subgrade coefficient of the next detection road section according to the second subgrade loading stress and the theoretical value of the second subgrade settlement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110317345.XA CN112982355B (en) | 2021-03-25 | 2021-03-25 | Comprehensive foundation coefficient testing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110317345.XA CN112982355B (en) | 2021-03-25 | 2021-03-25 | Comprehensive foundation coefficient testing device and method |
Publications (2)
| Publication Number | Publication Date |
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| CN112982355A true CN112982355A (en) | 2021-06-18 |
| CN112982355B CN112982355B (en) | 2021-11-23 |
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| DE10065501A1 (en) * | 2000-12-28 | 2002-07-04 | Roehm Gmbh | Process for the preparation of bead polymers with an average particle size in the range from 1 to 40 μm and molding compounds, beads and PAMA plastisols containing bead polymer |
| CN202002842U (en) * | 2011-01-20 | 2011-10-05 | 武汉远通路桥物资有限公司 | Pin-joint truss type static load test device |
| CN207133128U (en) * | 2017-03-13 | 2018-03-23 | 黑龙江工程学院 | Ground coefficient K30 automatic tester |
| CN208297259U (en) * | 2018-05-22 | 2018-12-28 | 西南交通大学 | A kind of coefficient of subgrade reaction K of sand-filled subgrade30Correction test device |
| CN209509038U (en) * | 2019-01-16 | 2019-10-18 | 河南省第二建设集团有限公司 | A kind of foundation intensity detection plate device |
| CN209741806U (en) * | 2019-01-21 | 2019-12-06 | 陕西长地建设工程质量检测有限公司 | Foundation coefficient detector supporting device |
| CN110965478A (en) * | 2019-12-27 | 2020-04-07 | 中交二公局第二工程有限公司 | Lifting beam and beam moving integrated support mechanism |
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| DE10065501A1 (en) * | 2000-12-28 | 2002-07-04 | Roehm Gmbh | Process for the preparation of bead polymers with an average particle size in the range from 1 to 40 μm and molding compounds, beads and PAMA plastisols containing bead polymer |
| CN202002842U (en) * | 2011-01-20 | 2011-10-05 | 武汉远通路桥物资有限公司 | Pin-joint truss type static load test device |
| CN207133128U (en) * | 2017-03-13 | 2018-03-23 | 黑龙江工程学院 | Ground coefficient K30 automatic tester |
| CN208297259U (en) * | 2018-05-22 | 2018-12-28 | 西南交通大学 | A kind of coefficient of subgrade reaction K of sand-filled subgrade30Correction test device |
| CN209509038U (en) * | 2019-01-16 | 2019-10-18 | 河南省第二建设集团有限公司 | A kind of foundation intensity detection plate device |
| CN209741806U (en) * | 2019-01-21 | 2019-12-06 | 陕西长地建设工程质量检测有限公司 | Foundation coefficient detector supporting device |
| CN110965478A (en) * | 2019-12-27 | 2020-04-07 | 中交二公局第二工程有限公司 | Lifting beam and beam moving integrated support mechanism |
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| CN112982355B (en) | 2021-11-23 |
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