CN113094965A - Structural stability analysis method, system, terminal and medium under vertical earthquake action - Google Patents
Structural stability analysis method, system, terminal and medium under vertical earthquake action Download PDFInfo
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Abstract
The application provides a method, a system, a terminal and a medium for analyzing structural stability under the action of a vertical earthquake, wherein the method comprises the following steps: establishing an integral three-dimensional structure model corresponding to the building structure; marking a structure to be analyzed in the integral three-dimensional structure model, wherein the structure to be analyzed comprises a structure of which the stability needs to be verified under the action of a vertical earthquake; determining a vertical seismic calculation model based on the integral three-dimensional structure model and the mark structure, wherein the vertical seismic calculation model comprises an overall rigidity matrix corresponding to the integral three-dimensional structure model and a quality matrix corresponding to the vertical degree of freedom of the mark structure; and analyzing the integral three-dimensional structure model according to the vertical earthquake calculation model to obtain a stability analysis result of the marking structure under the action of the vertical earthquake. The method provided by the application has higher precision, automation degree, efficiency and convenience and can meet the design requirements.
Description
Technical Field
The application relates to the technical field of building structure design, in particular to a method, a system, a terminal and a medium for analyzing structural stability under the action of a vertical earthquake.
Background
Vertical seismic analysis of large span structures or overhanging structures is often required according to standard design requirements.
In the related art, the vertical seismic analysis method mainly comprises the following steps: the method comprises the steps of firstly, carrying out vertical seismic analysis on an integral structure model of the building. And secondly, independently establishing a local structure model aiming at the large-span structure and the overhanging structure in the building, and performing vertical seismic analysis on the local structure model.
Wherein, the first method hardly reaches the standard that the participation mass coefficient is more than 90 percent, and hardly meets the calculation requirement. The second method cannot accurately simulate the model relationship between the local structure and the overall structure, which affects the accuracy of the analysis result, and the local structure model is different from the overall structure model, which brings great inconvenience to the subsequent design checking and calculating process.
Disclosure of Invention
The application provides a structural stability analysis method, a system, a terminal and a medium under the action of a vertical earthquake, and aims to at least solve the technical problems that an analysis method in the related technology is difficult to meet the calculation requirement, the precision is low and the convenience is poor.
An embodiment of a first aspect of the present application provides a method for analyzing structural stability under the action of a vertical earthquake, including:
establishing an integral three-dimensional structure model corresponding to the building structure;
marking a structure to be analyzed in the integral three-dimensional structure model, wherein the structure to be analyzed comprises a structure of which the stability needs to be verified under the action of a vertical earthquake;
determining a vertical seismic calculation model based on the integral three-dimensional structure model and the mark structure, wherein the vertical seismic calculation model comprises an overall rigidity matrix corresponding to the integral three-dimensional structure model and a quality matrix corresponding to the vertical degree of freedom of the mark structure;
and analyzing the integral three-dimensional structure model according to the vertical earthquake calculation model to obtain a stability analysis result of the marking structure under the action of a vertical earthquake.
An embodiment of a second aspect of the present application provides a system for analyzing structural stability under vertical seismic action, which is applicable to the method in the embodiment of the first aspect, and includes:
the building unit is used for building an integral three-dimensional structure model corresponding to the building structure;
the marking unit is used for marking a structure to be analyzed in the integral three-dimensional structure model, wherein the structure to be analyzed comprises a structure of which the stability needs to be verified under the action of a vertical earthquake;
the determining unit is used for determining a vertical seismic calculation model based on the integral three-dimensional structure model and the mark structure, and the vertical seismic calculation model comprises an overall rigidity matrix corresponding to the integral three-dimensional structure model and a quality matrix corresponding to the vertical degree of freedom of the mark structure;
and the analysis unit is used for analyzing the integral three-dimensional structure model according to the vertical earthquake calculation model so as to obtain a stability analysis result of the mark structure under the action of a vertical earthquake.
An embodiment of a third aspect of the present application provides a structural stability analysis terminal under vertical seismic action, including: a transceiver; a memory; a processor, connected to the transceiver and the memory respectively, configured to control the transceiver to transmit and receive wireless signals by executing computer-executable instructions on the memory, and capable of implementing the method as described in the above embodiments of the first aspect.
A fourth aspect of the present application is directed to a computer storage medium, where the computer storage medium stores computer-executable instructions; the computer-executable instructions, when executed by a processor, are capable of performing the method as described above in the first aspect.
The technical scheme provided by the embodiment of the application at least has the following beneficial effects:
in summary, in the method, the system, the terminal and the medium for analyzing the structural stability under the vertical earthquake action provided by the embodiment of the application, a vertical earthquake calculation model is established, the vertical earthquake calculation model comprises an overall stiffness matrix corresponding to the overall three-dimensional structure model and a quality matrix corresponding to the vertical degree of freedom of the mark structure, and then the overall three-dimensional structure model is analyzed according to the vertical earthquake calculation model, so that only the stability analysis result of the mark structure under the vertical earthquake action is obtained. Therefore, in the embodiment of the application, the whole three-dimensional structure model is analyzed by establishing the model for analyzing the stability of the marking structure under the vertical earthquake action, so that the stability analysis result of the marking structure under the vertical earthquake action is obtained, the quality coefficient can be ensured to reach the standard, and the calculation requirement is met. And a local structure model does not need to be established separately for the mark structure, so that the analysis precision can be ensured, and the convenience of checking calculation of subsequent processing design is also ensured. In addition, the method provided by the embodiment of the application has high automation degree and improves the efficiency.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic flow chart of a method for analyzing structural stability under the action of a vertical earthquake according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
The drawing identification-based modeling method, system, terminal, and medium according to the embodiments of the present application are described below with reference to the drawings.
Example one
Fig. 1 is a schematic flow chart of a method for analyzing structural stability under the action of a vertical earthquake according to an embodiment of the present application. As shown in fig. 1, the method may include:
Wherein the three-dimensional structure model can be established in a corresponding three-dimensional drawing application program based on user operation and the architectural design structure.
102, marking a structure to be analyzed in the integral three-dimensional structure model, wherein the structure to be analyzed comprises a structure of which the stability needs to be verified under the action of a vertical earthquake.
In this embodiment, the structure to be analyzed may be a structure that has a large influence under the action of a vertical earthquake, and for example, the structure to be analyzed may include: large span structures (e.g., grid structures, shell structures, etc.) and/or overhanging structures (e.g., outer balconies, eaves, etc.).
In an embodiment of the present application, a method for marking a structure to be analyzed in an overall three-dimensional structure model may include: and identifying and marking the structure to be analyzed according to the characteristics of each structure in the integral three-dimensional structure model, and/or receiving an instruction sent by the interactive interface and marking the structure to be analyzed according to the instruction. The instruction may include a marking instruction or a marking canceling instruction, and the marking instruction and the marking canceling instruction may be triggered according to a user operation, where the user operation specifically may include a click operation, a double click operation, or a circling operation. For example, when the user operation is a click operation, if it is detected that the user clicks a certain structure in the entire three-dimensional structure model and the structure is not marked, a marking instruction may be triggered to mark the structure according to the click operation. If it is detected that the user clicks a certain structure in the whole three-dimensional structure model and the structure is marked, a mark canceling instruction can be triggered according to the clicking operation to cancel the marking of the structure.
And 103, determining a vertical seismic calculation model based on the integral three-dimensional structure model and the mark structure, wherein the vertical seismic calculation model comprises an overall rigidity matrix corresponding to the integral three-dimensional structure model and a quality matrix corresponding to the vertical degree of freedom of the mark structure.
In this embodiment of the present application, the method for determining a vertical seismic computation model based on an integral three-dimensional structure model and a marker structure may include:
step 1031, determining a calculation model corresponding to the integral three-dimensional structure model according to a finite element algorithm; the calculation model comprises an overall rigidity matrix and an overall quality matrix corresponding to the overall three-dimensional structure model.
In this step, the method for determining the calculation model may include the following steps:
step a, carrying out mesh division on the structure in the integral three-dimensional structure model so as to divide each structure in the integral three-dimensional structure model into different units and obtain a finite element model.
And b, determining a unit stiffness matrix and a unit mass matrix corresponding to each unit in the finite element model.
And c, carrying out freedom degree numbering and freedom degree sequencing on each structure in the integral three-dimensional structure model.
Specifically, each structure has at least one end point, wherein each end point has six degrees of freedom, the six degrees of freedom including: an X-axis degree of freedom, a Y-axis degree of freedom, a Z-axis degree of freedom, a rotational degree of freedom about the X-axis, a rotational degree of freedom about the Y-axis, and a rotational degree of freedom about the Z-axis. And, the degree of freedom numbering and degree of freedom ordering of each structure may specifically be: and numbering and sequencing the degrees of freedom corresponding to all the end points of each structure.
And d, assembling the unit stiffness matrix and the unit mass matrix corresponding to each unit according to the freedom degree serial number and the freedom degree sequence to determine the overall stiffness matrix and the overall mass matrix corresponding to the overall three-dimensional structure model.
And e, calculating a working condition load vector.
And f, forming an equation set based on the overall stiffness model, the overall mass model and the working condition load vector to obtain a calculation model corresponding to the overall three-dimensional structure model.
The method of steps a-f is similar to the method in the prior art, and the embodiments of the present application are not described herein again.
And step 1032, determining a vertical seismic calculation model from the calculation models according to the mark structure.
The method for determining the vertical seismic calculation model from the calculation models according to the mark structure specifically comprises the following steps:
and A, acquiring an overall stiffness matrix in the calculation model.
And step B, acquiring a total mass matrix in the calculation model, keeping mass items corresponding to the vertical degree of freedom (for example, Z-axis degree of freedom) of the mark structure in the total mass matrix unchanged, and setting mass items corresponding to other degrees of freedom (for example, X-axis degree of freedom and Y-axis degree of freedom and the like) of the mark structure in the total mass matrix to be zero to obtain a local mass matrix.
And C, determining a vertical seismic calculation model according to the overall stiffness matrix and the local mass matrix.
And 104, analyzing the integral three-dimensional structure model according to the vertical earthquake calculation model to obtain a stability analysis result of the marking structure under the action of the vertical earthquake.
Specifically, the method for analyzing the structure to be analyzed according to the vertical seismic computation model may include:
firstly, carrying out characteristic value analysis and reaction spectrum analysis on the integral three-dimensional structure model according to the vertical seismic calculation model to obtain a calculation result related to the vertical degree of freedom of the mark structure.
Because the vertical seismic calculation model in the application only comprises the quality matrix corresponding to the vertical degree of freedom of the mark structure, when the vertical seismic model is used for carrying out characteristic value analysis and reaction spectrum analysis on the integral three-dimensional structure model, the output quality calculation result only comprises a calculation result related to the vertical degree of freedom of the mark structure, so that the stability analysis result of the mark structure under the action of the vertical seismic can be obtained only by analyzing the calculation result.
And secondly, performing stability analysis on the marking structure under the action of the vertical earthquake according to the calculation result to obtain an analysis result.
And, it should be noted that, in the embodiment of the present application, after the analysis result of the stability analysis under the vertical earthquake action on the marked structure is obtained, the analysis result may be used in the design of the building according to the building specification in combination with other analysis results. The other analysis result may be an analysis result of the overall three-dimensional structure model (e.g., a conventional analysis result such as a reaction spectrum analysis result), and the analysis result of the overall three-dimensional structure model may be obtained through computational analysis of the calculation model corresponding to the overall three-dimensional structure model established in the above steps a-f.
In summary, in the method for analyzing the structural stability under the vertical earthquake action provided by the embodiment of the application, a vertical earthquake calculation model is established, and the vertical earthquake calculation model includes a total stiffness matrix corresponding to the overall three-dimensional structure model and a quality matrix corresponding to the vertical degree of freedom of the marker structure, and then the overall three-dimensional structure model is analyzed according to the vertical earthquake calculation model, so that only the stability analysis result of the marker structure under the vertical earthquake action is obtained. Therefore, in the embodiment of the application, the whole three-dimensional structure model is analyzed by establishing the model for analyzing the stability of the marking structure under the vertical earthquake action, so that the stability analysis result of the marking structure under the vertical earthquake action is obtained, the quality coefficient can be ensured to reach the standard, and the calculation requirement is met. And a local structure model does not need to be established separately for the mark structure, so that the analysis precision can be ensured, and the convenience of checking calculation of subsequent processing design is also ensured. In addition, the method provided by the embodiment of the application has high automation degree and improves the efficiency.
Example two
The application also provides a structural stability analysis system under the action of a vertical earthquake, which is suitable for the method shown in figure 1 and comprises the following steps:
the building unit is used for building an integral three-dimensional structure model corresponding to the building structure;
the marking unit is used for marking a structure to be analyzed in the integral three-dimensional structure model, wherein the structure to be analyzed comprises a structure of which the stability needs to be verified under the action of a vertical earthquake;
the determining unit is used for determining a vertical seismic calculation model based on the integral three-dimensional structure model and the mark structure, and the vertical seismic calculation model comprises an overall rigidity matrix corresponding to the integral three-dimensional structure model and a quality matrix corresponding to the vertical degree of freedom of the mark structure;
and the analysis unit is used for analyzing the integral three-dimensional structure model according to the vertical earthquake calculation model so as to obtain a stability analysis result of the mark structure under the action of a vertical earthquake.
Optionally, the determining unit is further configured to:
determining a calculation model corresponding to the integral three-dimensional structure model according to a finite element algorithm; the calculation model comprises a total rigidity matrix and a total quality matrix corresponding to the integral three-dimensional structure model;
and determining the vertical seismic calculation model from the calculation model according to the mark structure.
Optionally, the determining unit is further configured to:
carrying out mesh division on the structure in the integral three-dimensional structure model so as to divide each structure in the integral three-dimensional structure model into different units to obtain a finite element model;
determining a unit stiffness matrix and a unit mass matrix corresponding to each unit in the finite element model;
carrying out degree of freedom numbering and degree of freedom sequencing on each structure in the integral three-dimensional structure model;
assembling a unit stiffness matrix and a unit mass matrix corresponding to each unit according to the freedom degree serial number and the freedom degree sequence to determine a total stiffness matrix and a total mass matrix corresponding to the whole three-dimensional structure model;
calculating a working condition load vector;
and forming an equation set based on the overall stiffness model, the overall mass model and the working condition load vector to obtain a calculation model corresponding to the overall three-dimensional structure model.
Optionally, the analysis unit is further configured to:
obtaining the overall stiffness matrix in the computational model;
obtaining the total mass matrix in the calculation model, keeping mass items corresponding to the vertical degree of freedom of the mark structure in the total mass matrix unchanged, and setting mass items corresponding to other degrees of freedom of the mark structure in the total mass matrix to zero to obtain a local mass matrix;
and determining the vertical seismic calculation model according to the overall stiffness matrix and the local mass matrix.
Optionally, the structure to be analyzed includes a large span structure and/or a cantilever structure.
Optionally, the marking unit is further configured to:
identifying and marking the structure to be analyzed according to the characteristics of each structure in the integral three-dimensional structure model; and/or the presence of a gas in the gas,
and receiving an instruction sent by an interactive interface, and marking the structure to be analyzed according to the instruction.
Optionally, the analysis unit is further configured to:
carrying out characteristic value analysis and reaction spectrum analysis on the integral three-dimensional structure model according to the vertical seismic calculation model to obtain a calculation result related to the vertical degree of freedom of the mark structure;
and carrying out stability analysis on the marking structure under the action of the vertical earthquake according to the calculation result.
In addition, this application embodiment still provides a structural stability analysis terminal under vertical seismic action, includes: a transceiver; a memory; and a processor respectively connected with the transceiver and the memory, configured to control the transceiver to transmit and receive wireless signals by executing computer-executable instructions on the memory, and capable of implementing the method shown in fig. 1.
The embodiment of the application also provides a computer storage medium, wherein the computer storage medium stores computer executable instructions; the computer-executable instructions, when executed by a processor, are capable of implementing the method illustrated in fig. 1.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable tag instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present application.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. A method for analyzing structural stability under the action of a vertical earthquake, which is characterized by comprising the following steps:
establishing an integral three-dimensional structure model corresponding to the building structure;
marking a structure to be analyzed in the integral three-dimensional structure model, wherein the structure to be analyzed comprises a structure of which the stability needs to be verified under the action of a vertical earthquake;
determining a vertical seismic calculation model based on the integral three-dimensional structure model and the mark structure, wherein the vertical seismic calculation model comprises an overall rigidity matrix corresponding to the integral three-dimensional structure model and a quality matrix corresponding to the vertical degree of freedom of the mark structure;
and analyzing the integral three-dimensional structure model according to the vertical earthquake calculation model to obtain a stability analysis result of the marking structure under the action of a vertical earthquake.
2. The method of claim 1, wherein determining a vertical seismic calculation model based on the global three-dimensional structure model and marker structure comprises:
determining a calculation model corresponding to the integral three-dimensional structure model according to a finite element algorithm; the calculation model comprises a total rigidity matrix and a total quality matrix corresponding to the integral three-dimensional structure model;
and determining the vertical seismic calculation model from the calculation model according to the mark structure.
3. The method of claim 2, wherein said determining a computational model corresponding to said overall three-dimensional structure model according to a finite element algorithm comprises:
carrying out mesh division on the structure in the integral three-dimensional structure model so as to divide each structure in the integral three-dimensional structure model into different units to obtain a finite element model;
determining a unit stiffness matrix and a unit mass matrix corresponding to each unit in the finite element model;
carrying out degree of freedom numbering and degree of freedom sequencing on each structure in the integral three-dimensional structure model;
assembling a unit stiffness matrix and a unit mass matrix corresponding to each unit according to the freedom degree serial number and the freedom degree sequence to determine a total stiffness matrix and a total mass matrix corresponding to the whole three-dimensional structure model;
calculating a working condition load vector;
and forming an equation set based on the overall stiffness model, the overall mass model and the working condition load vector to obtain a calculation model corresponding to the overall three-dimensional structure model.
4. The method of claim 2, wherein said determining the vertical seismic computational model from the computational model based on the marker structure comprises:
obtaining the overall stiffness matrix in the computational model;
obtaining the total mass matrix in the calculation model, keeping mass items corresponding to the vertical degree of freedom of the mark structure in the total mass matrix unchanged, and setting mass items corresponding to other degrees of freedom of the mark structure in the total mass matrix to zero to obtain a local mass matrix;
and determining the vertical seismic calculation model according to the overall stiffness matrix and the local mass matrix.
5. The method according to any one of claims 1 to 4, wherein the structure to be analyzed comprises a large span structure and/or a cantilever structure.
6. The method of claim 5, wherein said marking a structure to be analyzed in said global three-dimensional structure model comprises:
identifying and marking the structure to be analyzed according to the characteristics of each structure in the integral three-dimensional structure model; and/or the presence of a gas in the gas,
and receiving an instruction sent by an interactive interface, and marking the structure to be analyzed according to the instruction.
7. The method of claim 1, the analyzing the global three-dimensional structural model from the vertical seismic computation model, comprising:
carrying out characteristic value analysis and reaction spectrum analysis on the integral three-dimensional structure model according to the vertical seismic calculation model to obtain a calculation result related to the vertical degree of freedom of the mark structure;
and carrying out stability analysis on the marking structure under the action of the vertical earthquake according to the calculation result.
8. A system for analyzing structural stability under the action of a vertical earthquake, which is suitable for the method of any one of claims 1 to 7, and which comprises:
the building unit is used for building an integral three-dimensional structure model corresponding to the building structure;
the marking unit is used for marking a structure to be analyzed in the integral three-dimensional structure model, wherein the structure to be analyzed comprises a structure of which the stability needs to be verified under the action of a vertical earthquake;
the determining unit is used for determining a vertical seismic calculation model based on the integral three-dimensional structure model and the mark structure, and the vertical seismic calculation model comprises an overall rigidity matrix corresponding to the integral three-dimensional structure model and a quality matrix corresponding to the vertical degree of freedom of the mark structure;
and the analysis unit is used for analyzing the integral three-dimensional structure model according to the vertical earthquake calculation model so as to obtain a stability analysis result of the mark structure under the action of a vertical earthquake.
9. A structural stability analysis terminal under vertical seismic action, includes: a transceiver; a memory; a processor, coupled to the transceiver and the memory, respectively, configured to control the transceiver to transmit and receive wireless signals by executing computer-executable instructions on the memory, and to implement the method of any one of claims 1 to 7.
10. A computer storage medium, wherein the computer storage medium stores computer-executable instructions; the computer-executable instructions, when executed by a processor, are capable of implementing the method of any one of claims 1 to 7.
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