CN113111411B - System and method for reinforcing deep silt foundation - Google Patents
System and method for reinforcing deep silt foundation Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 26
- 239000002689 soil Substances 0.000 claims abstract description 78
- 239000002131 composite material Substances 0.000 claims abstract description 69
- 230000002787 reinforcement Effects 0.000 claims abstract description 68
- 238000004458 analytical method Methods 0.000 claims abstract description 46
- 238000004088 simulation Methods 0.000 claims abstract description 31
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Abstract
The invention belongs to the technical field of civil engineering and discloses a system and a method for reinforcing a deep silt foundation, wherein the system for reinforcing the deep silt foundation comprises a building structure analysis module, a foundation depth determination module, a soil property detection module, a central control module, a depth foundation strength determination module, a bearing capacity calculation module, a composite foundation initial determination module, a geological model establishment module, a simulation reinforcing module, a reinforcing feasibility analysis module, a display module and a composite foundation determination module; the method for reinforcing the deep silt foundation comprises the steps of analyzing the structure of a building and the depth of the foundation, and detecting the soil quality of the foundation; calculating the bearing capacity of the foundation; establishing a geological model of a foundation area, and simulating deep foundation reinforcement; the feasibility of the reinforcement method was analyzed. The invention adopts the composite foundation to strengthen the deep silt foundation, effectively improves the bearing capacity of the silt foundation, saves the cost, shortens the construction period, protects the environment and has good strengthening effect.
Description
Technical Field
The invention belongs to the technical field of civil engineering, and particularly relates to a system and a method for reinforcing a deep silt foundation.
Background
At present: with the development and construction of urban underground space, urban building construction projects are increasing. Urban roads are heavy in traffic, underground pipelines are dense, crisscross, and areas where underground space is densely developed are mostly commercial central areas, people flow and traffic flow are dense, pipelines are complex, and the method is long in time consumption for exploration and development of foundations and wide in range and is not suitable for engineering construction of urban central areas. The deep silt foundation is soft in soil quality, cannot support the above-ground building and needs to be reinforced. However, the existing reinforcement modes are all related to the overall condition of the foundation, and the method for selecting the reinforcement modes after geological exploration is long in time consumption, so that urban construction is seriously affected.
Through the above analysis, the problems and defects existing in the prior art are as follows: the existing reinforcement modes are all related to the overall condition of the foundation, and the method for selecting the reinforcement modes after geological exploration is long in time consumption, so that urban construction is seriously affected.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a system and a method for reinforcing a deep silt foundation.
The present invention is achieved by a system for reinforcing a deep silt foundation, the system for reinforcing a deep silt foundation comprising:
the system comprises a building structure analysis module, a foundation depth determination module, a soil quality detection module, a central control module, a depth foundation strength determination module, a bearing capacity calculation module, a composite foundation initial determination module, a geological model establishment module, a simulation reinforcement module, a reinforcement feasibility analysis module, a display module and a composite foundation determination module;
the building structure analysis module is connected with the central control module and used for analyzing the building structure through the building structure analysis module;
the foundation depth determining module is connected with the central control module and is used for determining the depth of the foundation of the building through a foundation depth determining program;
the soil quality detection module is connected with the central control module and is used for detecting the soil quality of the foundation through a soil quality detection program;
the central control module is connected with the building structure analysis module, the foundation depth determination module, the soil quality detection module, the depth foundation strength determination module, the bearing capacity calculation module, the composite foundation preliminary determination module, the geological model building module, the simulation reinforcement module, the reinforcement feasibility analysis module, the display module and the composite foundation determination module and used for controlling the normal operation of each module through the main control computer;
the deep foundation strength measuring module is connected with the central control module and is used for measuring the strength of the soft soil at the deepest part of the foundation through a deep foundation strength measuring program;
the bearing capacity calculation module is connected with the central control module and is used for calculating the bearing capacity of the foundation through a bearing capacity calculation program;
the composite foundation initial setting module is connected with the central control module and is used for determining the type of the selected composite foundation through a composite foundation determination program;
the geological model building module is connected with the central control module and is used for building a foundation region geological model through a geological model building program;
the simulation reinforcement module is connected with the central control module and used for simulating the reinforcement of the composite foundation through a simulation reinforcement program;
the reinforcement feasibility analysis module is connected with the central control module and used for analyzing the feasibility of the selected composite foundation through a reinforcement feasibility analysis program;
the display module is connected with the central control module and used for displaying the geological model and the simulation reinforcement process through the display;
and the composite foundation determining module is connected with the central control module and is used for determining the composite foundation material and strength through the feasibility analysis result, the geological model and the simulation reinforcement result.
Another object of the present invention is to provide a method of reinforcing a deep silt foundation, the method of reinforcing a deep silt foundation including the steps of:
analyzing a building structure through a building structure analysis module; determining the depth of the foundation of the building through a foundation depth determining program; detecting the soil quality of the foundation by a soil quality detection program;
step two, measuring the strength of the soft soil at the deepest part of the foundation by a deep foundation strength measuring program; calculating the bearing capacity of the foundation by a bearing capacity calculation program;
step three, determining the type of the selected composite foundation by a composite foundation determining program;
step four, establishing a foundation area geological model through a geological model establishment program; simulating composite foundation reinforcement through a simulation reinforcement program; displaying the geological model and the simulation reinforcement process through a display;
fifthly, analyzing the feasibility of the selected composite foundation by a reinforcement feasibility analysis program; and determining the composite foundation material and strength through the feasibility analysis result, the geological model and the simulation reinforcement result.
Further, in the first step, the analyzing the building structure by the building structure analyzing module includes:
(1) Obtaining an electrical signal representative of building information describing at least a portion of a building structure;
(2) Overlapping a lattice of points onto the building information;
(3) Analyzing the building information by projecting a plurality of rays from a plurality of points of the overlapped point grid using the overlapped point grid;
(4) An electrical signal representative of at least one routing graph is generated in response to the analysis and based at least in part on the overlapping grid of points and the building information.
Further, in the first step, the analyzing the building structure by the building structure analyzing module further includes:
and (3) planning the building according to the analyzed building route planning diagram, and acquiring the construction site, construction unit, construction area, building base area, building engineering grade, building layer number, building height, building classification, civil air defense engineering protection grade and earthquake-proof fortification intensity of the planned building to obtain building construction information.
Further, in the second step, the calculating the bearing capacity of the foundation by the bearing capacity calculating program includes:
correcting the foundation bearing capacity according to the foundation soil property, and for large-area load on the deep silt foundation, correcting the foundation bearing capacity f a Calculated as follows:
f a ＝f ak +η d γ m (d-0.5)
wherein: f (f) ak Is the characteristic value of the bearing capacity of the foundation; η (eta) d Taking eta of a deep silt foundation as a foundation bearing capacity correction coefficient of the foundation burial depth d ＝1.0；γ m Taking the floating volume weight below the underground water level as the weighted average weight of soil above the foundation bottom surface; d is the vertical distance from the undisturbed ground to the contact surface of the impermeable structure layer and the natural foundation.
In the third step, the composite foundation type is determined to be selected by the composite foundation determining program as follows:
extracting a local feature descriptor from a geological analysis result; encoding each of the local feature descriptors using a learned discrimination dictionary, wherein the learned discrimination dictionary includes class-specific sub-dictionaries and penalizes correlations between bases of sub-dictionaries associated with different classes;
classifying soil properties of different depths of the foundation using a trained machine-learning classifier based on coded local feature descriptors, wherein the coded local feature descriptors are derived from coding each of the local feature descriptors using a learned discrimination dictionary; determining the foundation strength through the local feature descriptors;
and determining the type of the selected composite foundation according to the strength of soil layers with different depths of the foundation.
Further, in the fourth step, the establishing a geological model of the foundation area includes:
(1) Detecting foundations of at least three places in a building area, and generating drawing information images of different depths of the places;
(2) Extracting, for each image, a planar contour of the panoramic image by a deep learning model for extracting image contours;
(3) Normalizing the scale, normalizing the estimated scale of the shooting position when each image is shot and the scale of the plane contour of each image, and obtaining the plane contour of each normalized image;
(4) And performing multi-object stitching, and stitching to obtain a multi-object plane contour based on the plane contour of each normalized image.
Further, in the fourth step, the establishing a geological model of the foundation area further includes:
obtaining the plane contour of each single three-dimensional object in a three-dimensional space based on the plane contour of each normalized image obtained in the image processing step; based on the plane contour of each single three-dimensional object in the three-dimensional space, splicing to obtain a multi-object plane contour in the three-dimensional space; and converting the spliced multi-object plane contour in the three-dimensional space into a foundation area 3D geological model.
In a fifth step, the analyzing the feasibility of the selected composite foundation by the reinforcement feasibility analysis program includes:
1) Obtaining the distribution condition and the distribution rule of the soil layer below the simulated construction building according to the soil quality and the depth of the foundation, and obtaining the foundation pressure actually transmitted to the foundation of the simulated construction building through the structural analysis result of the simulated construction building;
2) Selecting a soil body B which is basically consistent with the soil layer distribution condition and the distribution rule of the soil body A beside the foundation bearing capacity of the simulated building foundation;
3) Digging a pit body with the depth equal to the foundation depth of the simulated building on the soil body B, and making a leveling layer with the thickness not more than 20mm on the bottom surface of the pit;
4) Carrying out a loading test by using a load-bearing tester, and when the test load reaches the use load of the simulated construction building, namely the base pressure is the same as the base pressure of the foundation of the simulated construction building;
5) The pressure of the foundation is kept unchanged all the time in the load-holding stage, and the foundation soil of the building is simulated and constructed under the long-term load action of the upper structure, and the foundation soil is continuously loaded until the soil body is damaged after the load holding is finished; obtaining a P-S curve of the soil body B;
6) And obtaining the bearing capacity characteristic value of the soil body A simulating the bearing capacity of the foundation of the building after the long-term load action according to the P-S curve of the soil body B.
Further, in the loading test:
according to the pressure classified loading of the substrate, after each stage of loading, the sedimentation displacement is measured and read at intervals of 10min, 15min and 15min, and then every half hour, when the sedimentation displacement is smaller than 0.1mm in two continuous hours, the sedimentation displacement is considered to be stable, and the next stage of load can be added.
By combining all the technical schemes, the invention has the advantages and positive effects that: according to the invention, building structure analysis and foundation depth and geological condition analysis are carried out, and foundation bearing capacity is comprehensively obtained; and the foundation model is constructed and simulated in a foundation reinforcement mode, so that the demonstration of bearing of a building after foundation reinforcement is realized, the determination of the type of the composite foundation is realized, the most suitable deep silt foundation reinforcement composite foundation can be obtained, the efficiency is considered, the construction time is shortened, and the promotion of urban construction progress is realized.
The invention adopts the composite foundation to strengthen the deep silt foundation, effectively improves the bearing capacity of the silt foundation, simultaneously does not need to strengthen the whole foundation in all directions, saves the cost, shortens the construction period, protects the environment and has good strengthening effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly explain the drawings needed in the embodiments of the present application, and it is obvious that the drawings described below are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of a system for reinforcing a deep silt foundation according to an embodiment of the present invention.
Fig. 2 is a flowchart of a method of reinforcing a deep silt foundation according to an embodiment of the present invention.
Fig. 3 is a flow chart of analyzing a building structure provided by an embodiment of the present invention.
Fig. 4 is a flowchart for establishing a geologic model of a foundation area according to an embodiment of the invention.
Fig. 5 is a flowchart of a method for analyzing feasibility of the reinforcement method according to an embodiment of the present invention.
In fig. 1: 1. a building structure analysis module; 2. a foundation depth determining module; 3. a soil property detection module; 4. a central control module; 5. a depth foundation strength measuring module; 6. a bearing capacity calculation module; 7. a composite foundation initialization module; 8. a geological model building module; 9. simulating a reinforcement module; 10. a reinforcement feasibility analysis module; 11. a display module; 12. and a composite foundation determination module.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In view of the problems of the prior art, the present invention provides a system and method for reinforcing a deep silt foundation, and the present invention is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a system for reinforcing a deep silt foundation according to an embodiment of the present invention includes:
the system comprises a building structure analysis module 1, a foundation depth determination module 2, a soil quality detection module 3, a central control module 4, a depth foundation strength measurement module 5, a bearing capacity calculation module 6, a composite foundation initial determination module 7, a geological model establishment module 8, a simulation reinforcement module 9, a reinforcement feasibility analysis module 10, a display module 11 and a composite foundation determination module 12;
the building structure analysis module 1 is connected with the central control module 4 and is used for analyzing the building structure through the building structure analysis module;
the foundation depth determining module 2 is connected with the central control module 4 and is used for determining the depth of the foundation of the building through a foundation depth determining program;
the soil quality detection module 3 is connected with the central control module 4 and is used for detecting the soil quality of the foundation through a soil quality detection program;
the central control module 4 is connected with the building structure analysis module 1, the foundation depth determination module 2, the soil quality detection module 3, the depth foundation strength measurement module 5, the bearing capacity calculation module 6, the composite foundation initial determination module 7, the geological model establishment module 8, the simulation reinforcement module 9, the reinforcement feasibility analysis module 10, the display module 11 and the composite foundation determination module 12 and is used for controlling the normal operation of each module through the main control computer;
the deep foundation strength measuring module 5 is connected with the central control module 4 and is used for measuring the strength of the soft soil at the deepest part of the foundation through a deep foundation strength measuring program;
the bearing capacity calculation module 6 is connected with the central control module 4 and is used for calculating the bearing capacity of the foundation through a bearing capacity calculation program;
the composite foundation initial setting module 7 is connected with the central control module 4 and is used for determining the type of the selected composite foundation through a composite foundation determination program;
the geological model building module 8 is connected with the central control module 4 and is used for building a foundation region geological model through a geological model building program;
the simulation reinforcement module 9 is connected with the central control module 4 and is used for simulating the reinforcement of the composite foundation through a simulation reinforcement program;
the reinforcement feasibility analysis module 10 is connected with the central control module 4 and is used for analyzing the feasibility of the selected composite foundation through a reinforcement feasibility analysis program;
the display module 11 is connected with the central control module 4 and is used for displaying the geological model and the simulation reinforcement process through a display;
the composite foundation determination module 12 is connected with the central control module 4 and is used for determining composite foundation materials and strength through feasibility analysis results, geological models and simulation reinforcement results.
As shown in fig. 2, the method for reinforcing a deep silt foundation according to the embodiment of the present invention includes the following steps:
s101, analyzing a building structure through a building structure analysis module; determining the depth of the foundation of the building through a foundation depth determining program; detecting the soil quality of the foundation by a soil quality detection program;
s102, measuring the strength of the soft soil at the deepest part of the foundation by a deep foundation strength measuring program; calculating the bearing capacity of the foundation by a bearing capacity calculation program;
s103, determining the type of the selected composite foundation by a composite foundation determining program;
s104, establishing a foundation region geological model through a geological model establishment program; simulating composite foundation reinforcement through a simulation reinforcement program; displaying the geological model and the simulation reinforcement process through a display;
s105, analyzing the feasibility of the selected composite foundation by a reinforcement feasibility analysis program; and determining the composite foundation material and strength through the feasibility analysis result, the geological model and the simulation reinforcement result.
As shown in fig. 3, the analysis building structure provided in the embodiment of the present invention specifically includes:
s201 obtaining an electrical signal representing building information describing at least a portion of a building structure;
s202, overlapping the point grid on the building information;
s203, analyzing the building information by projecting a plurality of rays from a plurality of points of the overlapped point grid by using the overlapped point grid;
s204 generating an electrical signal representative of at least one routing graph responsive to the analysis and based at least in part on the overlapping grid of points and the building information.
As shown in fig. 4, the method for establishing a geological model of a foundation area according to the embodiment of the present invention includes:
s301, detecting foundations of at least three places in a building area, and generating drawing information images with different depths of the places;
s302, for each image, extracting the plane contour of the panoramic image through a deep learning model for extracting the image contour;
s303, carrying out scale normalization, and normalizing the estimated scale of the shooting position when each image is shot and the scale of the plane contour of each image to obtain the plane contour of each normalized image;
s304, multi-object stitching is carried out, and multi-object plane contours are stitched based on the plane contours of the normalized images.
As shown in fig. 5, the feasibility of the analysis and reinforcement method provided by the embodiment of the invention includes:
s401, obtaining the distribution condition and the distribution rule of soil layers below the simulated construction building according to the soil quality and the depth of the foundation, and obtaining the base pressure actually transmitted to the foundation of the simulated construction building through the structural analysis result of the simulated construction building;
s402, selecting a soil body B basically consistent with the soil layer distribution condition and the distribution rule of the soil body A beside the foundation bearing capacity of the simulated building;
s403, digging a pit body with the depth equal to the foundation depth of the simulated building on the soil body B, and making a leveling layer with the thickness not more than 20mm on the pit bottom surface;
s404, carrying out a loading test by using a load-bearing tester, and when the test load reaches the use load of the simulated building, namely the base pressure is the same as the base pressure of the foundation of the simulated building;
s405, the pressure of the foundation is kept unchanged all the time in the loading stage, at the moment, the foundation soil of the simulated building is subjected to long-term loading action of the upper structure, and the foundation soil is loaded continuously until the soil body is damaged after the loading is completed; obtaining a P-S curve of the soil body B;
s406, obtaining the bearing capacity characteristic value of the foundation bearing capacity soil body A of the simulated building after long-term load action according to the P-S curve of the soil body B.
When the embodiment of the invention operates, the building structure is analyzed through the building structure analysis module; determining the depth of the foundation of the building through a foundation depth determining program; detecting the soil quality of the foundation by a soil quality detection program; measuring the strength of the soft soil at the deepest part of the foundation by a deep foundation strength measuring program; calculating the bearing capacity of the foundation by a bearing capacity calculation program; determining the type of the selected composite foundation by a composite foundation determining program; establishing a foundation region geological model through a geological model establishment program; simulating composite foundation reinforcement through a simulation reinforcement program; displaying the geological model and the simulation reinforcement process through a display; analyzing the feasibility of the selected composite foundation by a reinforcement feasibility analysis program; and determining the composite foundation material and strength through the feasibility analysis result, the geological model and the simulation reinforcement result.
While the invention has been described with respect to what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (6)
1. A system for reinforcing a deep silt foundation, the system for reinforcing a deep silt foundation comprising:
the system comprises a building structure analysis module, a foundation depth determination module, a soil quality detection module, a central control module, a depth foundation strength determination module, a bearing capacity calculation module, a composite foundation initial determination module, a geological model establishment module, a simulation reinforcement module, a reinforcement feasibility analysis module, a display module and a composite foundation determination module;
the building structure analysis module is connected with the central control module and used for analyzing the building structure through the building structure analysis module;
the foundation depth determining module is connected with the central control module and is used for determining the depth of the foundation of the building through a foundation depth determining program;
the soil quality detection module is connected with the central control module and is used for detecting the soil quality of the foundation through a soil quality detection program;
the central control module is connected with the building structure analysis module, the foundation depth determination module, the soil quality detection module, the depth foundation strength determination module, the bearing capacity calculation module, the composite foundation preliminary determination module, the geological model building module, the simulation reinforcement module, the reinforcement feasibility analysis module, the display module and the composite foundation determination module and used for controlling the normal operation of each module through the main control computer;
the deep foundation strength measuring module is connected with the central control module and is used for measuring the strength of the soft soil at the deepest part of the foundation through a deep foundation strength measuring program;
the bearing capacity calculation module is connected with the central control module and is used for calculating the bearing capacity of the foundation through a bearing capacity calculation program;
the composite foundation initial setting module is connected with the central control module and is used for determining the type of the selected composite foundation through a composite foundation determination program;
the geological model building module is connected with the central control module and is used for building a foundation region geological model through a geological model building program;
the simulation reinforcement module is connected with the central control module and used for simulating the reinforcement of the composite foundation through a simulation reinforcement program;
the reinforcement feasibility analysis module is connected with the central control module and used for analyzing the feasibility of the selected composite foundation through a reinforcement feasibility analysis program;
the display module is connected with the central control module and used for displaying the geological model and the simulation reinforcement process through the display;
the composite foundation determining module is connected with the central control module and is used for determining composite foundation materials and strength through feasibility analysis results, geological models and simulation reinforcement results;
the method for reinforcing the deep silt foundation comprises the following steps:
analyzing a building structure through a building structure analysis module; determining the depth of the foundation of the building through a foundation depth determining program; detecting the soil quality of the foundation by a soil quality detection program;
step two, measuring the strength of the soft soil at the deepest part of the foundation by a deep foundation strength measuring program; calculating the bearing capacity of the foundation by a bearing capacity calculation program;
step three, determining the type of the selected composite foundation by a composite foundation determining program;
step four, establishing a foundation area geological model through a geological model establishment program; simulating composite foundation reinforcement through a simulation reinforcement program; displaying the geological model and the simulation reinforcement process through a display;
fifthly, analyzing the feasibility of the selected composite foundation by a reinforcement feasibility analysis program; determining composite foundation materials and strength through feasibility analysis results, geological models and simulation reinforcement results;
in the second step, the calculating the bearing capacity of the foundation by the bearing capacity calculating program includes:
correcting the foundation bearing capacity according to the foundation soil property, and for large-area load on the deep silt foundation, correcting the foundation bearing capacity f a Calculated as follows:
f a ＝f ak +η d γ m (d-0.5)
wherein: f (f) ak Is the bearing capacity of the foundationA characteristic value; η (eta) d Taking eta of a deep silt foundation as a foundation bearing capacity correction coefficient of the foundation burial depth d ＝1.0；γ m Taking the floating volume weight below the underground water level as the weighted average weight of soil above the foundation bottom surface; d is the vertical distance from the undisturbed ground to the contact surface of the seepage-proofing structure layer and the natural foundation;
in the third step, the composite foundation type is determined to be selected by the composite foundation determining program as follows:
extracting a local feature descriptor from a geological analysis result; encoding each of the local feature descriptors using a learned discrimination dictionary, wherein the learned discrimination dictionary includes class-specific sub-dictionaries and penalizes correlations between bases of sub-dictionaries associated with different classes;
classifying soil properties of different depths of the foundation using a trained machine-learning classifier based on coded local feature descriptors, wherein the coded local feature descriptors are derived from coding each of the local feature descriptors using a learned discrimination dictionary; determining the foundation strength through the local feature descriptors;
and determining the type of the selected composite foundation according to the strength of soil layers with different depths of the foundation.
2. The system for reinforcing a deep silt foundation according to claim 1, wherein in the first step, said analyzing the structure of the building by the building structure analyzing module comprises:
(1) Obtaining an electrical signal representative of building information describing at least a portion of a building structure;
(2) Overlapping a lattice of points onto the building information;
(3) Analyzing the building information by projecting a plurality of rays from a plurality of points of the overlapped point grid using the overlapped point grid;
(4) An electrical signal representative of at least one routing graph is generated in response to the analysis and based at least in part on the overlapping grid of points and the building information.
3. The system for reinforcing a deep silt foundation according to claim 1, wherein in the first step, said analyzing the structure of the building by the building structure analyzing module further comprises:
and (3) planning the building according to the analyzed building route planning diagram, and acquiring the construction site, construction unit, construction area, building base area, building engineering grade, building layer number, building height, building classification, civil air defense engineering protection grade and earthquake-proof fortification intensity of the planned building to obtain building construction information.
4. The system for reinforcing a deep silt foundation according to claim 1, wherein in the fourth step, said establishing a geological model of a foundation area includes:
(1) Detecting foundations of at least three places in a building area, and generating drawing information images of different depths of the places;
(2) For each image, extracting a plane contour of the panoramic image by a deep learning model for extracting an image contour;
(3) Normalizing the scale, normalizing the estimated scale of the shooting position when each image is shot and the scale of the plane contour of each image, and obtaining the plane contour of each normalized image;
(4) And performing multi-object stitching, and stitching to obtain a multi-object plane contour based on the plane contour of each normalized image.
5. The system for reinforcing a deep silt foundation according to claim 4, wherein in the fourth step, said building a geological model of a foundation area further comprises:
obtaining the plane contour of each single three-dimensional object in the three-dimensional space based on the plane contour of each normalized image obtained in the image processing step; based on the plane contour of each single three-dimensional object in the three-dimensional space, splicing to obtain a multi-object plane contour in the three-dimensional space; and converting the spliced multi-object plane contour in the three-dimensional space into a foundation area 3D geological model.
6. The system for reinforcing a deep silt foundation according to claim 1, wherein in the fifth step, the analyzing the feasibility of the selected composite foundation by the reinforcement feasibility analyzing program comprises:
1) Obtaining the distribution condition and the distribution rule of the soil layer below the simulated construction building according to the soil quality and the depth of the foundation, and obtaining the foundation pressure actually transmitted to the foundation of the simulated construction building through the structural analysis result of the simulated construction building;
2) Selecting a soil body B which is basically consistent with the soil layer distribution condition and the distribution rule of the soil body A beside the foundation bearing capacity of the simulated building foundation;
3) Digging a pit body with the depth equal to the foundation depth of the simulated building on the soil body B, and making a leveling layer with the thickness not more than 20mm on the bottom surface of the pit;
4) Carrying out a loading test by using a load-bearing tester, and when the test load reaches the use load of the simulated construction building, namely the base pressure is the same as the base pressure of the foundation of the simulated construction building;
5) The pressure of the foundation is kept unchanged all the time in the load-holding stage, at the moment, the foundation soil of the simulated building is subjected to long-term load action of the upper structure, and the foundation soil continues to be loaded until the soil body is damaged after the load holding is finished; obtaining a P-S curve of the soil body B;
6) And obtaining the bearing capacity characteristic value of the soil body A simulating the bearing capacity of the foundation of the building after the long-term load action according to the P-S curve of the soil body B.
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