土木建筑工程

结构抗震承载力利用系数的可靠度校核

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  • 1.华南理工大学 土木与交通学院,广东 广州 510640; 2.华南理工大学 亚热带建筑科学国家重点实验室,广东 广州 510640
曾繁良( 1989) ,男,博士生,主要从事工程结构抗震性能研究.

收稿日期: 2017-11-07

  修回日期: 2018-09-12

  网络出版日期: 2018-12-01

基金资助

广东省科技计划项目( 2017A020219001) ;亚热带建筑科学国家重点实验室自主课题( 2016KA02,2017KC18) 

Reliability Verification for Seismic Capacity Utilization Factors of Structure
 

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  •  1. School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640, Guangdong,China; 2. State Key Laboratory of Subtropical Building Science,South China University of Technology, Guangzhou 510640,Guangdong,China
曾繁良( 1989) ,男,博士生,主要从事工程结构抗震性能研究.

Received date: 2017-11-07

  Revised date: 2018-09-12

  Online published: 2018-12-01

Supported by

 Supported by the Science and Technology Planning Project of Guangdong Province( 2017A020219001) 

摘要

广东省的地方性标准 DBJ15-92—2013《高层建筑混凝土结构技术规程》的抗震 性能设计在国家现行的抗震设计规范的基础上进行改进,采用按设防烈度地震( 中震) 计 算地震作用,引入承载力利用系数考虑构件的延性能力,来进行构件的承载力设计. 为验 证新的抗震承载力计算公式的可靠性,采用一次二阶矩方法对计算公式进行可靠度分析, 研究了荷载比( 地震作用标准值效应与重力荷载效应比值) 、性能水准、设防烈度、构件受 力类型等因素对可靠度的影响. 结果表明:在同一性能水准下构件可靠指标和可靠性概率 大小所遵从的规律为受压构件 >受剪构件 >受弯构件 > 受拉构件,符合“强剪弱弯”的概 念设计要求;荷载比和构件重要性系数对构件可靠度有显著的影响,设防烈度对构件可靠 度的影响不大. 

本文引用格式

曾繁良 黄炎生 周靖 . 结构抗震承载力利用系数的可靠度校核[J]. 华南理工大学学报(自然科学版), 2019 , 47(1) : 56 -63 . DOI: 10.12141/j.issn.1000-565x.170496

Abstract

The seismic performance design of Guangdong local code Technical Specification for Concrete Structures of Tall Building ( DBJ15-92—2013) was improved based on current national earthquake resistant design code. The elements' bearing capacity was designed according to the earthquake force of inter-mediate earthquake and the ductility of elements measured by the capacity utilization factors. First-order Second-moment Method ( FOSM) was employed to verify the reliability of the new earthquake resistant capacity equation. And the influence of many factors,such as the ratio of load ( the ratio of seismic force to gravity) ,performance levels,and precautionary intensity and element types,on the reliability were evaluated. The results show that under the same performance level, the reliability index and the reliable probability of elements conform to the rule: compression members > shear members > flexural members > tension members. This rule satisfies the“strong shear weak bending”design conception. The ratio of load and the index of component importance coefficient have a great impact on the reliability, but the fortification intensity has a small influence. 

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