Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Floor response spectrum simplified calculation method considering SSSI effect

A technology that simplifies calculation and response spectrum. It is used in calculations, design optimization/simulation, special data processing applications, etc. It can solve the difference between the calculated structure and the actual structure, and the embedded effect cannot be considered for a structure with a large amount of calculation and a deeply embedded structure. and other problems to achieve the effect of ensuring model consistency and accuracy and low computational cost

Active Publication Date: 2018-05-15
CHINA NUCLEAR POWER ENG CO LTD
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In previous studies on the SSSI effect of nuclear power plants, in addition to a small amount of experimental research, the lumped mass bar unit of each plant was usually established for numerical simulation. Its advantages are simple model and fast calculation speed. There is still a certain difference from the actual structure, and the embedding effect cannot be considered for the deeply buried structure
[0004] Establishing a 3D model of the plant can solve the above defects, but at the current computer level, using a 3D model for SSSI analysis is computationally intensive and time-consuming, and poses challenges to both computer hardware and analysis software

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Floor response spectrum simplified calculation method considering SSSI effect
  • Floor response spectrum simplified calculation method considering SSSI effect
  • Floor response spectrum simplified calculation method considering SSSI effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings.

[0019] The principle of the exemplary simplified calculation method of the floor response spectrum considering the SSSI effect of the present invention is as follows.

[0020] (1) In order to consider the interaction between adjacent structures, it is necessary to model all structures within the influence range together and perform SSI solution when modeling, which will lead to a large number of nodes in the model, resulting in too many degrees of freedom Calculation time is too long. Under the current limited computer resources, the problem of excessive computational cost can be solved by the method of substructure. The substructure method is the process of condensing some elements in the structural model into a hypothetical element with a matrix. This single matrix element is called a superelement in the general finite element ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of nuclear building design, and relates to a floor response spectrum simplified calculation method considering an SSSI effect. The simplified calculation method is combined with two kinds of finite element programs of the general finite element program and the SSI analysis program; on one hand, part of the structure units in a building group are assembled into a unit by means of super-elements in the general finite element program; on the other hand, by means of format conversion of a dynamic characteristic matrix, the SSI analysis program can directly read unit matrix information of the general finite element program, and floor response spectrum simplified calculation considering the SSI effect is conducted by means of a computing kernel of theSSI analysis program. According to the floor response spectrum simplified calculation method considering the SSSI effect, the SSSI effect can be considered in a real, efficient and rapid mode, calculation results conform to reality on the basis of ensuring consistency and accuracy of a model, and the computing cost is low.

Description

technical field [0001] The invention belongs to the technical field of nuclear building design, and relates to a simplified calculation method of floor response spectrum considering SSSI effect. Background technique [0002] In the seismic analysis of nuclear power plants, the floor response spectrum is an important basis for the vibration input of the equipment on the floor. In order to reflect the complexity of the site conditions and the actual stress of the structure, the calculation and analysis usually need to consider the soil-structure interaction (SSI effect). Structure-soil-structure interaction (SSSI effect) belongs to a subfield of SSI effect, which studies the dynamic response between adjacent buildings under external loads or earthquakes. For a large-scale structure like a nuclear power plant, each building is large in size and adjacent to each other. Simply studying the SSI effect of a single building cannot truly reflect the dynamic response of the structure....

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06F17/50
CPCG06F30/13G06F30/23
Inventor 孙晓颖吴茜婷孟剑刘玉林隋然
Owner CHINA NUCLEAR POWER ENG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com