CN-121389481-B - Intelligent earthquake-resistant structure optimization design method and system for high-rise building

CN121389481BCN 121389481 BCN121389481 BCN 121389481BCN-121389481-B

Abstract

The invention discloses an intelligent earthquake-resistant structure optimization design method and system for a high-rise building, and relates to the technical field of earthquake-resistant design of the high-rise building, wherein the method comprises the steps of taking earthquake intensity division, site category and fault distribution information, and establishing a working condition database considering interaction of multidirectional earthquake and soil-structure by combining earthquake motion time course and site investigation parameters; setting interlayer displacement angle, floor acceleration, plastic rotation angle and energy dissipation ratio index in the model, constructing an anti-seismic performance comprehensive function, setting constraint according to a standard limit value, converting the structural model into an optimizable problem, and realizing optimal design by iteratively calling a working condition database and automatically correcting key component parameters and damping arrangement. According to the method, the structure optimization design of the high-rise building under the action of the multidirectional earthquake is realized by establishing an earthquake working condition database, parameterized structure modeling and performance function constraint.

Inventors

WANG JIAN
LIN FENG
WU XIANCHAO
WANG SONG
LIU LEI
ZHONG YANPENG
ZHANG ZENGWU

Assignees

中建八局第一建设有限公司

Dates

Publication Date: 20260508
Application Date: 20251028

Claims (10)

1. An intelligent earthquake-resistant structure optimization design method for a high-rise building is characterized by comprising the following steps: acquiring seismic intensity division, site category and fault distribution information of a high-rise building area, constructing an earthquake working condition input model by combining an earthquake table network and a historical earthquake motion time course, obtaining soil layer shear wave speed, foundation bearing capacity and amplification effect parameters through site investigation, forming a database considering the interaction of multidirectional earthquake motion and a soil-structure, constructing a structure model in a BIM platform, and importing frequency characteristics and load input in the earthquake working condition database to generate a primary design solution; Defining interlayer displacement angle, floor acceleration, component plastic rotation angle and energy dissipation ratio index in a structural model, constructing an anti-seismic performance comprehensive function, establishing constraint conditions through standard limit values and design boundaries, converting a parameterized structural model into an optimizable problem to perform global search and local adjustment, calling a working condition database to update power input in each iteration, and automatically correcting beam column sections, shear wall thicknesses, core tube reinforcement and damper arrangement in the structural model; After the optimization is completed, the power response simulation is carried out on the candidate schemes, the power response simulation results are compared with the performance index system, a multi-scheme performance matrix is generated, the performances of different design solutions in terms of displacement, acceleration, ductility and energy consumption are compared through the multi-scheme performance matrix, and the optimal and suboptimal design schemes are output.
2. The method for optimizing the design of the intelligent earthquake-resistant structure for the high-rise building of claim 1, wherein the input model of the earthquake working condition comprises the steps of describing the earthquake power spectrum density by adopting a Kanai-Tajimi model, determining the foundation radiation damping initial coefficient by adopting a Lysmer-Kuhlemeyer model, and introducing the field shear wave velocity, the thickness of a covering layer and the liquefaction discrimination result into the soil-structure interaction analysis.
3. The method for optimizing design of intelligent earthquake-resistant structure for high-rise building of claim 2, wherein the building of structural model in BIM platform comprises beam, column, shear wall, core tube, foundation raft and damping device; the damping device is modeled by parameterizing fractional energy dissipaters.
4. The method for optimizing design of an intelligent earthquake-resistant structure for a high-rise building according to claim 3, wherein the earthquake-resistant performance comprehensive function comprises an interlayer displacement angle, a top-layer acceleration, a component plastic rotation angle and an energy dissipation ratio; the energy dissipation ratio is output by the ratio of the seismic input energy to the energy dissipated by the energy consumer.
5. The method for optimizing design of intelligent earthquake-resistant structure for high-rise building as set forth in claim 4, wherein said specification limit and design boundary include an interlayer displacement angle limit, a vertex acceleration limit, a component limit plastic rotation angle and a minimum energy consumption ratio.
6. The method for optimizing design of an intelligent earthquake-resistant structure for a high-rise building according to claim 5, wherein the global search and the local adjustment comprise the steps of calling an earthquake working condition database to update power input each time, and automatically correcting the section size of a beam column, the thickness of a shear wall, the reinforcement ratio of a core tube and the arrangement position and number of dampers according to the updated power response result, so that a gradually converged parameterized iterative process is formed.
7. The method for optimizing design of an intelligent earthquake-resistant structure for a high-rise building of claim 6, wherein the multi-scheme performance matrix comprises dynamic response analysis of candidate schemes based on different earthquake working conditions, and a multi-scheme performance matrix comprising an interlayer displacement angle, a top-layer acceleration, a component plastic rotation angle and an energy dissipation ratio is generated.
8. A system adopting the intelligent earthquake-resistant structure optimization design method for the high-rise building according to any one of claims 1 to 7, which is characterized by comprising an earthquake working condition modeling module, a structure modeling and performance constraint module and an optimization iteration and result evaluation module; the earthquake working condition modeling module is used for collecting regional earthquake vibration, site investigation and soil-structure interaction parameters, establishing a multidirectional earthquake working condition database and forming input conditions; The structure modeling and performance constraint module is used for constructing a high-rise building parameterized model on the BIM platform, importing load and earthquake working conditions, defining interlayer displacement angle, acceleration, plastic rotation angle and energy dissipation ratio performance indexes, and setting specification limit values and design constraint conditions; The optimization iteration and result evaluation module is used for adjusting structural parameters through an intelligent optimization algorithm, generating candidate schemes, performing multi-working-condition power simulation, constructing a multi-scheme performance matrix, comparing different schemes and screening optimal and suboptimal design schemes.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the intelligent anti-seismic structure optimization design method for high-rise buildings according to any one of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the intelligent anti-seismic structure optimization design method for high-rise buildings according to any one of claims 1 to 7.

Description

Intelligent earthquake-resistant structure optimization design method and system for high-rise building Technical Field The invention relates to the technical field of high-rise building earthquake-resistant design, in particular to an intelligent earthquake-resistant structure optimization design method and system for a high-rise building. Background In recent years, with the rapid promotion of urban design, the number of high-rise buildings is continuously increased, and the anti-seismic design method is continuously researched and perfected. Early high-rise building earthquake-resistant design is mainly based on static analysis and a given reaction spectrum method, but is difficult to accurately reflect the non-stationarity and the field effect of earthquake motion. Subsequently, seismic designs based on time-course analysis are becoming popular and earth-structure interaction (SSI) models are introduced to improve the accuracy of prediction of the dynamic response. Meanwhile, by applying the BIM technology and the parameterized modeling method, the building geometric information, the material characteristics and the load conditions can be integrated on the same platform, so that an automatic process from data input to model construction is realized. In recent years, intelligent optimization algorithms and multi-objective decision methods are gradually applied to earthquake-resistant structural design, so that the design scheme can seek comprehensive balance among safety, economy and constructability. Despite the advances made in seismic design by existing methods, significant shortcomings remain. Firstly, the existing seismic working condition modeling is mostly limited to unidirectional earthquake motion or simplified earthquake input, so that the influence of multidirectional coupling earthquake motion on a high-rise building is difficult to comprehensively reflect, and particularly a mechanism for deeply fusing SSI effect as input data with a structural model is lacking. Secondly, although the existing structural modeling method can realize parametric modeling by means of BIM technology, most researches stay in the description of geometric and load layers, and frequency characteristics and an earthquake working condition database cannot be introduced in the primary modeling stage, so that deviation exists between a model and an actual dynamic environment. And the existing performance evaluation system is based on single or dispersion indexes, lacks a unified anti-seismic performance comprehensive function, and is difficult to carry out overall quantification and judgment on interlayer displacement angle, floor acceleration, component ductility and energy consumption characteristics, so that the optimization process lacks a definite convergence target. Finally, the existing optimization method usually only focuses on the improvement of a single target or a local solution, an iteration mechanism combining global search and dynamic adjustment cannot be formed, and links of matrix comparison and visual display of multiple schemes after optimization is completed are lacking. Disclosure of Invention The present invention has been made in view of the above-described problems. The invention solves the technical problems that the existing high-rise building earthquake-resistant design method has incomplete earthquake working condition modeling, is difficult to accurately consider the SSI effect, fails to deeply combine frequency characteristics and power input in the structural modeling stage, lacks a unified comprehensive function in a performance evaluation system, and realizes iterative updating of structural parameters and outputs a multi-scheme evaluation result through an intelligent optimization algorithm. The intelligent earthquake-resistant structure optimization design method comprises the following steps of obtaining earthquake intensity division, site category and fault distribution information of a high-rise building area, constructing an earthquake working condition input model by combining an earthquake table network and a historical earthquake motion time course, obtaining soil layer shear wave speed, foundation bearing capacity and amplification effect parameters through site investigation to form a database considering interaction of multidirectional earthquake motion and a soil-structure, constructing a structure model in a BIM platform, introducing frequency characteristics and load input in the earthquake working condition database to generate a preliminary design solution, defining an interlayer displacement angle, floor acceleration, component plastic corner and energy dissipation ratio index in the structure model, constructing an earthquake resistance comprehensive function, establishing constraint conditions through a standard limit value and a design boundary, converting the parameterized structure model into an optimizable problem, carrying out global search and local adjustment, c