CN112948943B - Pre-processing method and post-processing method of OpenSees software for grid-type diaphragm wall foundation - Google Patents

Abstract

The invention provides a pre-processing method and a post-processing method of OpenSees software of a grid type underground continuous wall foundation, which aim at the technical problem that the prior art cannot adapt to the grid type underground continuous wall foundation and is muted, calculated and displayed. The scheme overcomes the defects that the grid type underground diaphragm wall foundation cannot be modeled, calculated and displayed in the prior art, and also achieves the technical effects of quickly processing the calculation result and presenting the result.

Description

Pre-processing method and post-processing method of OpenSees software for lattice-type underground diaphragm wall foundation

technical field

The present invention relates to the technical field of software, in particular to the technical field of pre- and post-processing software of OpenSees software.

Background technique

The open system for earthquake engineering simulation OpenSees (Open System for Earthquake Engineering Simulation) is funded by the National Natural Science Foundation of the United States, led by the Pacific Earthquake Engineering Research Center, and developed by UC Berkeley. And the continuous development of open program software system. This software is mainly used for seismic response simulation of structures and geotechnical aspects. The analyzes that can be realized include: simple static linear elastic analysis, static nonlinear analysis, section analysis, modal analysis, PushOver pseudo-dynamic analysis, dynamic linear elasticity It can also be used for reliability and sensitivity analysis of structures and geotechnical systems under earthquake action. It allows users to create serial and parallel finite element computer applications to simulate the response of structures and geotechnical systems affected by earthquakes and other hazards. OpenSees is primarily written in C++ and uses some Fortran and C numerical libraries to solve linear equations, as well as material and element routines. Specific information about the software can be found at: https://opensees.berkeley.edu/.

Pile foundation is a deep foundation that connects the tops of several piles into a whole through caps to bear dynamic and static loads together. Pile is a vertical or inclined foundation component set in the soil, and its function is to pass through the weak high compression The load on the pile is transferred to the harder, denser or less compressible bearing layer of the foundation.

The lattice-type underground diaphragm wall foundation is a new type of bridge foundation, which is suitable for long-span river and sea bridges. According to the investigation of some liquefaction sites after major earthquakes in the United States and Japan, the foundation has good anti-liquefaction performance.

However, there are very few researches on the grid type underground diaphragm wall foundation of this new anti-liquefaction foundation. At present, the main research methods are:

(1), shaking table test and centrifuge shaking table test;

(2) Numerical simulation test.

Among them, the economic cost and time cost of shaking table test and centrifuge shaking table test are high, and the influencing factors of the research are very limited. The economic cost and time cost of the numerical simulation test are small, and the influence of various factors can be studied. Therefore, the numerical simulation method is the most effective method to study the foundation of the lattice underground diaphragm wall.

The Navigator in the prior art provides OpenSees users with convenient pre- and post-processing functions. Its operation is simple and clear, and it greatly simplifies the modeling process and data collation and analysis process. However, the current pre-processing and post-processing of the software are designed for simple foundations such as "pile foundations". Therefore, it cannot be used for modeling, calculation and presentation of calculation results of complex foundations such as "lattice underground diaphragm wall foundation".

At present, there is no modeling software and calculation result presentation software for the lattice underground diaphragm wall foundation. OpenSees software can't be applicable to the defect of lattice type underground diaphragm wall foundation, is the engineering technical problem to be solved urgently in this field.

Contents of the invention

The pre- and post-processing method of the OpenSees software of a grid type underground diaphragm wall foundation of the present invention is just a kind of grid type underground diaphragm wall foundation modeling, calculation and processing based on GID software proposed to solve the aforementioned technical problems. Pre-processing and post-processing software technology for presentation of calculation results.

For this reason, the present invention is realized by following technical means or/and technical feature:

A kind of pretreatment method of the OpenSees software of lattice formula underground diaphragm wall foundation, it is characterized in that the method comprises the steps:

S1: Use GID software for modeling to build a grid-type underground diaphragm wall foundation model;

S2: Attach corresponding materials to the wall and soil, and set the boundary conditions of the model;

S3: Execute the calculation function of the GID software, and convert the model in the GID software into the model information recognized by the OpenSees software.

In a certain type of embodiment, the following steps are also included:

The S1 step wherein also includes:

Copy the files required for pre-processing to the problemtype folder of the GID installation software.

In a certain type of embodiment, the required files include:

calculation file;

Material properties file;

Boundary condition files; and

Process files.

In a certain class of embodiment, described calculation file, it is the grid type underground diaphragm wall foundation model that will set up in GID software, calculates and converts the file of the calculation model that OpenSees software recognizes;

Described material attribute file, it is to give materials such as soil material and wall material and contact surface material in the model, the file in the corresponding unit in the model;

Described boundary condition file, the file that the lattice type underground diaphragm wall foundation model is applied to the model in vibration direction, pore water pressure boundary, model bottom and top boundary conditions;

The processing file is a file that copies and moves the files and related software used in the calculation, and realizes the automation of subsequent calculation and calculation result processing.

In a certain type of embodiment, step S1 of the method further includes the following steps:

In the GID software, use the point, line, surface, and body functions in the GID software and the commands of copying, moving, layering, and grouping to generate the points, lines, surfaces, and bodies required for modeling;

In the GID software, the grid division function in the GID software is used for grid division. Before division, the line, surface and volume of the model need to be set to achieve the grid division requirements required for calculation accuracy;

In the GID software, use the unit attachment function in the GID software to assign the multi-yield surface plastic constitutive material and elastic material to the soil unit and the foundation unit.

In the GID software, use the node attribute function in the GID software to assign the prepared contact surfaces to the foundation nodes and soil nodes.

In the GID software, use the node attribute function in the GID software to assign the edited shear beam boundary to the shear beam nodes and all nodes on both sides of the model vibration direction.

In a certain type of embodiment, step S3 of the method further includes the following steps:

In the GID software, use the calculation function in the GID software to calculate the established model, corresponding boundaries, materials and post-processing models to obtain the OpenSees model.

A kind of post-processing method of the OpenSees software of lattice formula underground diaphragm wall foundation, it is characterized in that the method comprises the steps:

S4: Utilize Windows commands to automatically run OpenSees software to obtain calculation results and obtain data files;

S5: using Windows commands to automatically process the data files through a post-processing program;

S6: Automatically open the GID software to display the calculation results processed by the post-processing program.

In a certain type of embodiment, the post-processing procedure includes:

Pore.exe pore water pressure processing software: convert the pore water pressure data of the soil in the calculation results of OpenSees software into the Pore.res file recognized by GID software;

Displacement processing software Displacement.exe: convert the displacement data of walls and soil in the calculation results of OpenSees software into the Displacement.res file recognized by GID software;

Acceleration processing software Acceleration.exe: Convert the acceleration data of walls and soil in the calculation results of OpenSees software into the Acceleration.res file recognized by GID software;

Stress processing software Stress.exe: convert the effective stress data of the soil in the calculation results of OpenSees software into the Stress.res file recognized by GID software;

Strain processing software Strain.exe: convert the strain data of the soil in the calculation results of OpenSees software into the Strain.res file recognized by GID software.

In a certain type of embodiment, the step S6 includes:

The calculation results are displayed in the form of a cloud map through the display command of the GID software.

In a certain type of embodiment, before step S6, it also includes:

Use the problemtype command of the GID software to set the calculation result display window to the View results window.

A method for processing the OpenSees software of a grid-type underground diaphragm wall foundation, characterized in that the method comprises: a pre-processing method of the OpenSees software of the grid-type underground diaphragm wall foundation as described in any one of the foregoing, and The post-processing method of the OpenSees software of the lattice type underground diaphragm wall foundation as described in any one of the foregoing.

Beneficial technical effects:

The technical scheme proposed by the invention is a method that can not only solve the foundation modeling of the grid type underground diaphragm wall (pre-processing), but also realize the automatic processing and presentation of the calculation results (post-processing). The pre- and post-processing in the technical solution proposed by the present invention realizes the rapid modeling of the grid-type underground diaphragm wall foundation, overcomes the defects in the prior art that cannot be modeled, calculated, and displayed for the grid-type underground diaphragm wall foundation, and also The technical effect of quickly processing calculation results and result presentation is realized. In addition, the present invention realizes the automatic calculation after modeling, the processing of the calculation results and the presentation of the results, which can greatly simplify the simulation calculation process of the lattice-type underground diaphragm wall foundation.

Instructions attached

Fig. 1 is a flow chart of the pre- and post-processing method of the OpenSees software of a grid type underground diaphragm wall foundation;

Figure 2 is an example diagram of model establishment;

Figure 3 is an example diagram of grid division;

Figure 4 is an example diagram of boundary setting;

Figure 5 is an example diagram of pore water pressure boundary setting;

Figure 6 is an example diagram of foundation-soil contact surface setting;

Figure 7 is an example diagram of foundation-soil material setting;

Figure 8 is an example diagram of post-processing model settings;

Fig. 9 is an example diagram of an OpenSees model generated by model calculation;

Figure 10 is an example diagram of the automatic calculation of the OpenSees model and the automatic processing of the calculation results;

Figure 11 is an example diagram of post-processing window settings.

Detailed ways

The embodiments described below are not just descriptions for a specific embodiment, but selective descriptions for potential embodiments with certain technical features, and some technical features are not necessarily present. Specific to a specific embodiment, it is a combination of some of the following technical features, as long as the combination is not logically contradictory or meaningless. "May/may be" (may, may be, indicating choice, implying that there may be other alternatives appearing anywhere in the present invention; except if the context expresses "capability") is a preferred embodiment , which may be potentially other alternatives. When the technical terms "approximately", "approximately" and "approximately" appear in any position of the present invention, when describing the approximate description words (if any), the meaning to be expressed is not to require that the data obtained after strict actual parameter measurement be strictly It conforms to the general mathematical definition, because there is no physical entity that fully conforms to the mathematical definition, and it is not vague and ambiguous, which leads to unclear.

With reference to Fig. 1, it is a kind of flow chart of the pre-and post-processing method of the OpenSees software of grid type diaphragm wall foundation.

1. The "pre-processing" part of the OpenSees software that executes the grid-type underground diaphragm wall foundation:

Step S1: use GID software to model, and the specific implementation steps include: copy the files required for pre-processing to the problemtype folder of the GID installation software, and build a grid-type underground diaphragm wall foundation model.

GID software is a professional engineering science numerical simulation tool, which can greatly meet various processing requirements of numerical simulation. The software allows to generate large grids for surfaces and volumes in a fast and effective manner, and can generate unstructured and semi-structured , structured, embedded or Cartesian grids, and 2D and 3D anisotropic grids.

Different from the Navigator technical solution described in the background technology, in order to solve the above technical problems, the present invention introduces GID software as a tool for modeling and result presentation, and uses OpenSees as a bridge tool to solve the problem that the existing technology cannot be used for "grid The technical problems of modeling, calculation and presentation of calculation results of complex foundations such as the "Type Underground Diaphragm Wall Foundation".

Among them, the files required for pre-processing include at least the following four files:

(1) Calculation file 3D_RCDW_Soil_Interaciton.bas; in the GID software, the grid type underground diaphragm wall foundation model established in the GID software is calculated and transformed into the calculation model recognized by the OpenSees software.

With reference to Fig. 2, in a certain embodiment, in GID software, utilize point, line, surface, body function and copy, move, layer and group order in GID software, generate the point, line, Surface and volume, thus realizing the establishment of the model.

Referring to Fig. 3, in a certain embodiment, in the GID software, the grid division function in the GID software is used for grid division. Before division, the lines, surfaces and volumes of the model need to be set to achieve the calculation accuracy required. The grid division requirements of the grid are realized.

(2) The material attribute file 3D_RCDW_Soil_Interaciton.mat; in the GID software, the soil material, wall material and contact surface material in the model are assigned to the corresponding units in the model.

Referring to Fig. 7, in a certain embodiment, in the GID software, using the unit attachment function in the GID software, the multi-yield surface plastic constitutive material and elastic material are assigned to the soil unit and the basic unit, thus Realize the settings of foundation and soil materials.

Referring to Fig. 6, in a certain embodiment, in the GID software, using the node attribute function in the GID software, the written contact surface is assigned to the foundation node and the soil node, thereby realizing the setting of the contact surface between the foundation and the soil the goal of.

(3) Boundary condition file 3D_RCDW_Soil_Interaciton.cnd; In the GID software, apply the grid-type diaphragm wall foundation model in the vibration direction, pore water pressure boundary, model bottom and top boundary conditions to the model.

Those skilled in the art can easily understand that the above-mentioned files can also include other types of files, and the above-mentioned files are not necessarily implemented separately, and several types of files can be integrated into the same file. Examples are limitations.

With reference to Fig. 4, in a certain embodiment, in GID software, use the node assignment function in GID software, the shear beam boundary that writes is assigned to shear beam node and all nodes on both sides of model vibration direction, thus To achieve the purpose of applying the vibration direction boundary condition to the model.

Referring to Fig. 5, in one embodiment, using the node attribute assignment function in the GID software, the written pore water pressure boundary condition is assigned to the shear beam boundary and the top node of the model, thereby realizing the application of the pore water pressure boundary condition The purpose of going to the model.

Other means of applying the boundary conditions at the bottom and top of the model to the model are similar to the above methods, and will not be repeated here.

(4) Process the file 3D_RCDW_Soil_Interaciton.bat; copy and move the files and related software used in the calculation, and realize the automation of subsequent calculation and calculation result processing.

Continue to refer to Figure 1, and then execute:

Step S2: Attach corresponding materials to the wall and soil, and set the boundary conditions of the model.

Step S3: Execute the calculation function of the GID software.

With reference to Fig. 9, in a certain embodiment, in GID software, utilize the calculation function in GID software to calculate the model that will establish, corresponding boundary, material and post-processing model, obtain OpenSees model.

After completing this step, the model in the GID software is converted into the model information recognized by the OpenSees software.

This step S1, S2, S3 has finished the preprocessing flow process of the OpenSees software of lattice formula underground diaphragm wall foundation, also namely modeling method/step, model conversion method/step of the present invention. This step partly belongs to the "pre-processing" part of the OpenSees software of the lattice type underground diaphragm wall foundation.

2. Then perform the "post-processing" part of the OpenSees software for the grid-type diaphragm wall foundation:

S4: Use the dos command in Windows to write a bat file, wherein the bat file automatically calls OpenSees and then automatically runs the OpenSees software, and runs the calculation model to obtain calculation results and data files.

S5: Utilize the dos command in Windows to write the bat file, wherein the bat file automatically calls the post-processing program/software, automatically processes the data file (i.e. the calculation result) by the post-processing program/software, and obtains the post-processing result.

The calculation results of OpenSees software are data files, so the results cannot be displayed intuitively to the software calculator. After this step, the calculation results of the OpenSees model are transformed into results that can be recognized by the GID model. The post-processing program described therein is a post-processing program written by MATLAB software. These post-processing procedures at least specifically include the following procedures:

(1) Pore.exe, the pore water pressure processing software: convert the pore water pressure data of the soil in the calculation results of the OpenSees software into the Pore.res file recognized by the GID software.

(2) Displacement processing software Displacement.exe: convert the displacement data of the wall and soil in the calculation results of the OpenSees software into the Displacement.res file recognized by the GID software.

(3), acceleration processing software Acceleration.exe: convert the acceleration data of the wall and soil in the calculation results of the OpenSees software into the Acceleration.res file recognized by the GID software.

(4) Stress processing software Stress.exe: Convert the effective stress data of the soil in the OpenSees software calculation results into the Stress.res file recognized by the GID software.

(5), strain processing software Strain.exe: convert the strain data of the soil body in the OpenSees software calculation result into the Strain.res file recognized by the GID software.

Those skilled in the art can easily understand that the above-mentioned post-processing program/software can also include other post-processing programs, and the above-mentioned post-processing software is not necessarily implemented separately, and several post-processing software functions can be integrated in the same software. This embodiment is not limited by the above-mentioned exemplary embodiments.

After the OpenSees software calculation is completed, the post-processing software runs automatically to convert the data file into the result model recognized by the GID software, thus greatly simplifying the processing and presentation of the calculation results.

Wherein the Windows order among the step S5 and S4, all can be packaged in the Windows batch processing order, and its file format is bat form.

S6: Automatically open the GID software to display the calculation result after the post-processing program processing (i.e. the post-processing result obtained after the post-processing program processing), specifically, the calculation result can be displayed in the form of a cloud map by the GID software display command.

In a certain preferred embodiment, before step S6, also comprise post-processing result window setting step: utilize the problemtype command of GID software to be set to the View results window for the calculation result display window. For the setting of this step, reference may be made to an embodiment shown in FIG. 10 .

Referring to Fig. 11, in a certain embodiment, what it shows is the cloud image display result of the calculation result of pore water pressure.

The above is a preferred description of some embodiments of the present invention, and the above description is only a description of a certain type of embodiment including a certain technical feature/technical means at an appropriate time. The above various technical features/technical means can be combined reasonably ( Unless it is illogical), to obtain a specific reasonable embodiment. In addition, because some technical features may be circumvented or replaced, some technical features may not be implemented, so the above reasonable combination includes embodiments without certain technical features. Finally, since the drawings in the description are necessarily limited, they are only to show some selected embodiments, not to show the scope of protection or all embodiments, some technical features may not be implemented, some technical features It may be implemented in other forms of alternative technical features/means, so the drawings in the description cannot be used as the basis for intentionally narrowing the protection scope of the claims.

The present invention is not intended to be an exhaustive description of any details of the pre- and post-processing methods of the OpenSees software of the grid type underground diaphragm wall foundation involved in the content of the invention, and some undescribed content can be obtained by those skilled in the art based on the knowledge of the field. Technical knowledge and design according to actual needs. However, even if this part of the design is creative or/and progressive, as long as the technical features covered by the claims of the present invention are utilized, the technical solution should also fall within the protection scope of the present invention.

The above embodiments are all descriptions of the preferred design of the present invention. According to the Patent Law and its related regulations, the actual scope of protection is subject to the scope of protection determined by the claims, and the contents of the description can be used to explain the specific/more details of the claims. further implications. On the basis of not departing from the design gist/spirit of the present invention, any embellishment or modification of the present invention shall fall within the protection scope of the present invention.

Claims (3)

1. A processing method of OpenSees software of a grid type underground continuous wall foundation is characterized by comprising the following steps: a pre-processing method of OpenSees software of the grid type underground continuous wall foundation and a post-processing method of OpenSees software of the grid type underground continuous wall foundation;

the pretreatment method of the OpenSees software of the grid type underground continuous wall foundation comprises the following steps:

s1: modeling by utilizing GID software to construct a grid type underground continuous wall foundation model;

s2: attaching corresponding materials to the wall body and the soil body, and setting boundary conditions of the model;

s3: executing the calculation function of the GID software;

wherein the step S1 further comprises:

copying files required by preprocessing into a proplemype folder of the GID installation software; the required files include: calculating a file, a material attribute file, a boundary condition file, and a processing file;

the calculation file is a file which is obtained by converting a grid type underground continuous wall foundation model established in the GID software into a calculation model identified by OpenSees software through calculation;

the material attribute file is a file which at least endows soil materials, wall materials and contact surface materials in the model to corresponding units in the model;

the boundary condition file is a file for applying boundary conditions of the grid type underground continuous wall foundation model in the vibration direction, the pore water pressure boundary, the bottom and the top of the model to the model;

the processing file is an automatic file which copies and moves files used for calculation and related software and realizes subsequent calculation and calculation result processing;

the step S3 further includes the steps of:

in the GID software, the established model, the corresponding boundary, the material and the post-processing model are calculated by utilizing the calculation function in the GID software to obtain an OpenSees model;

the post-processing method of the OpenSees software of the grid type underground continuous wall foundation comprises the following steps:

s4: writing a bat file by using a dos command in Windows, wherein the bat file automatically calls OpenSees and then automatically runs OpenSees software, and runs a calculation model to obtain a calculation result and obtain a data file;

s5: writing a bat file by using a dos command in Windows, wherein the bat file automatically calls a post-processing program, and the data file is automatically processed by the post-processing program to obtain a post-processing result;

s6: automatically opening GID software to display a post-processing result obtained after the post-processing program is processed;

wherein, before the step S6, the method further comprises: setting a calculation result display window to a Viewresults window by using a promlemype command of GID software;

the step S6 comprises the following steps: and displaying the calculation result in a cloud picture form through a GID software display command.

2. The processing method of openses software of grid-type underground diaphragm wall foundation according to claim 1, wherein the step S1 further includes the steps of:

in the GID software, generating points, lines, surfaces and bodies required by modeling by using functions of the points, the lines, the surfaces and the bodies and copying, moving, layering and grouping commands in the GID software;

in GID software, meshing is carried out by utilizing a meshing function in the GID software, and lines, faces and bodies of a model need to be set before the meshing so as to meet the meshing requirement required by the calculation accuracy;

in GID software, a multi-yield-surface plastic constitutive material and an elastic material are assigned to a soil body unit and a foundation unit by utilizing the attribute function of the units in the GID software;

in the GID software, the node attribution function in the GID software is utilized to assign the compiled contact surface to a basic node and a soil body node;

in the GID software, the node attribution function in the GID software is utilized to assign the compiled shearing beam boundary to the shearing beam node and all the nodes on two sides of the model vibration direction.

3. The method for processing openses software of grid-type underground diaphragm wall foundation as claimed in claim 1, wherein said post-processing procedure comprises:

pore water pressure processing software pore.exe: converting pore water pressure data of a soil body in the calculation result of the OpenSees software into a Pore.res file identified by the GID software;

displacement processing software displacement. Converting displacement data of the wall body and the soil body in the OpenSees software calculation result into displacement files identified by GID software;

acceleration processing software Accelation. Exe: converting the acceleration data of the wall and the soil in the calculation result of the OpenSees software into an Accelection.

Stress processing software stress. Converting effective stress data of a soil body in the calculation result of the OpenSees software into a stress.

Strain processing software strain. And converting the strain data of the soil body in the calculation result of the OpenSees software into a strain.

Images