AN OPTIMIZATION OF SENSITIVITY FACTORS FOR GENERAL DESIGN FORMULA

Qi Fengbo; Yao Jitao

doi:10.13204/j.gyjz201308002

Volume 43 Issue 8

Dec. 2014

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Qi Fengbo, Yao Jitao. AN OPTIMIZATION OF SENSITIVITY FACTORS FOR GENERAL DESIGN FORMULA[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(8): 10-14. doi: 10.13204/j.gyjz201308002

Citation:

Qi Fengbo, Yao Jitao. AN OPTIMIZATION OF SENSITIVITY FACTORS FOR GENERAL DESIGN FORMULA[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(8): 10-14. doi: 10.13204/j.gyjz201308002

Qi Fengbo, Yao Jitao. AN OPTIMIZATION OF SENSITIVITY FACTORS FOR GENERAL DESIGN FORMULA[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(8): 10-14. doi: 10.13204/j.gyjz201308002

Citation:

Qi Fengbo, Yao Jitao. AN OPTIMIZATION OF SENSITIVITY FACTORS FOR GENERAL DESIGN FORMULA[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(8): 10-14. doi: 10.13204/j.gyjz201308002

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AN OPTIMIZATION OF SENSITIVITY FACTORS FOR GENERAL DESIGN FORMULA

doi: 10.13204/j.gyjz201308002

1.
School of Civil Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China

Received Date: 2013-03-28
Publish Date: 2013-08-20

Abstract

Abstract

General design formula in seismic combination can be obtained by associating combination of actions based on stochastic processes with design value method.It aims at improving flexibility of design.Due to the large variability of seismic action, the sensitivity factors recommended by international standard are not suitable.If the variability of variables changed greatly, in order to improve the control precision of reliability, standardized sensitivity factor values must be re-valued.Enumeration optimization method is lack of purpose.A function that can give a qualitative optimization direction is proposed.It can give the contribution to the difference between calculated and target value of reliability index caused by the sensitivity factor value of each variable.The function can be used in choosing initial value process and optimizing process, overall optimal result can be obtained under all proportion pairs.The standardized sensitivity factors are used for different design working life and different target reliability index, the errors show that optimization link can use 50-year design working life and a suitable target reliability index.
- seismic combination,
- general design formula,
- standardized sensitivity factors,
- optimization

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References(9)

References

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ISO 2394∶1986 GeneRal PRinciples on Reliability foR StRuctuRes [S].

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[6] 冯云芬,贡金鑫.建筑结构基于可靠指标的设计方法[J].工业建筑,2011,41(7):1－8.

[7] 史志华,胡德炘,陈基发,等.钢筋混凝土结构构件正常使用极限状态可靠度的研究[J].建筑科学,2000,16(6):4－11.

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