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A BIM-based building group earthquake damage simulation visualization system and method

A technology of building groups and building models, applied in 3D modeling, office automation, design optimization/simulation, etc., can solve the problem of not being able to see the details of earthquake damage, the deviation between the model and the actual building, and not enough to reflect the earthquake damage of the building group authenticity and other issues to achieve the effect of reducing earthquake disaster damage

Active Publication Date: 2019-04-16
广州珠江外资建筑设计院有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the simplification of the 3D model, it is not enough to see the details of the earthquake damage between the building layers, or the error in the process from the simplified model to the refined modeling process leads to deviations between the model and the actual building, which is not enough to reflect the earthquake damage of the building group. authenticity

Method used

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  • A BIM-based building group earthquake damage simulation visualization system and method
  • A BIM-based building group earthquake damage simulation visualization system and method
  • A BIM-based building group earthquake damage simulation visualization system and method

Examples

Experimental program
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Embodiment 1

[0038] This embodiment performs shaking simulation visualization on a certain building, including two processes of data collection and processing and building shaking simulation and visualization, wherein the data collection and processing are specifically divided into the following two steps: (1) by analyzing the IFC standard file, from the BIM building The building entity information data (elevation, storey height, etc.) is obtained in the model; taking a wall of a fifteen-story BIM building model in the three-dimensional coordinate system as an example, through combing the text structure of standard wall entity components and establishing the association mechanism between entities and attribute sets Description, and finally get building information data for this standard wall component:

[0039] (1-1) Standard wall text structure: Each statement in the IFC standard file is assigned an instance number (# number), and the reference and inheritance relationship between entities...

Embodiment 2

[0050] In this embodiment, a collapsed experimental model—the structural frame of a four-story building is restored according to the design drawings, and a BIM building information model is established, such as Figure 7 (a) The frame of the four-storey building structure built for the experiment of the collapse of the experimental platform, as shown in Figure 7 (b)b is the BIM simulation model that has been processed and loaded and displayed in the browser. Using the building shaking time history data fed back from the collapse simulation experiment of the experimental platform, the BIM simulation model is rendered in the browser according to the linear interpolation calculation method , to simulate and restore the shaking of the building frame structure, when the response time is t=5.37s, Figure 8 (a) is the actual shaking of the four-story building frame structure on the test bench, Figure 8 (b) shows the sloshing simulation of the BIM building simulation model under th...

Embodiment 3

[0054] This embodiment carries out the simulation visualization of building earthquake damage on the basis of the shaking simulation visualization in Embodiment 2, which mainly includes two parts: one is to establish the mutual mapping relationship between the graphic model and the physical model; the other is to visualize the results of building earthquake damage. Such as Figure 10 As shown, specifically:

[0055] (1) Establish a mapping between the graphical model and the physical model

[0056] (1) By obtaining the BIM graphic model data, establish a corresponding rough-precision physical model for each component of the model:

[0057] Taking each component of the BIM architectural model as the basic unit, and establishing a corresponding physical model in the physical world, not only the position and shape attribute information of each component needs to be shared, but also attribute information such as mass, initial velocity, and motion direction must be included. Befo...

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Abstract

The invention belongs to the technical field of earthquake disaster early warning analysis, and relates to a BIM-based building group earthquake damage simulation visualization system and method. thesystem includes a user management module, a model management module and a model display module, wherein the user management module comprises a user query and user deletion unit; the model management module comprises model query, model upload, model deletion and time history data uploading units; the model display comprises BIM three-dimensional model display, BIM model shake display, BIM model collapse display, BIM damage display and regional fire simulation unit; accurate modeling of the building entity from appearance design to an internal structure can be achieved, high-reality restorationof situations such as shaking, collapsing and damage of a building group when an earthquake disaster occurs is achieved, development of earthquake-proof and disaster-reducing series work is facilitated, and earthquake disaster damage of an urban area is effectively reduced.

Description

Technical field: [0001] The invention belongs to the technical field of earthquake disaster early warning analysis, and relates to a BIM-based earthquake damage simulation visualization system and method for building groups. Background technique: [0002] With the rapid development of social economy, the scale of cities has expanded rapidly, showing a high-speed fusion of urban population density and building density. The relative concentration of population and the density of building facilities make the situation of earthquake disaster threats faced by the vast cities more and more severe. Once an earthquake disaster occurs, it will inevitably cause large-scale building damage and casualties, and bring devastating harm to the city. In order to reduce the damage caused by earthquake disasters in urban areas to the greatest extent, two phases of response measures are usually adopted: planning and contingency plan, assessment and rescue. Weak links in earthquake resistance; ...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06T17/00G06F9/451G06Q10/10G06Q50/26
CPCG06F9/451G06Q10/103G06Q50/26G06T17/00G06F30/13G06F30/23Y02A10/40
Inventor 王金龙张晓妹高珂
Owner 广州珠江外资建筑设计院有限公司
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