工业建筑可变作用的概率模型及可靠度  

ON THE PROBABILITY MODELS OF VARIABLE ACTIONS FOR INDUSTRIAL BUILDINGS AND ITS RELIABILITY

作　　者：姚继涛[1] 谷慧[1] 幸坤涛[2] YAO Jitao;GU Hui;XING Kuntao(I.School of Civil Engineering,Xi＇an University of Architecture and Technology,Xi＇an 710055,China;Central Research Institute of Building and Construction Co.Ltd,MCC,Beijing 100088,China)

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]中冶建筑研究总院有限公司,北京100088

出　　处：《工业建筑》2018年第8期147-154,201,共9页Industrial Construction

基　　金：“十三五”国家重点研发计划资助(2016YFC0701301-01)

摘　　要：对工业建筑可变作用的概率模型及可靠度研究现状进行了综述,包括工业建筑可变作用的概率模型、工业建筑设计可靠度、既有工业建筑鉴定评级可靠度、工业建筑时变可靠度4个方面,揭示了当前研究的不足。工业建筑可变作用包括吊车荷载、工业建筑楼面活荷载和屋面积灰荷载,当前我国相关技术标准中荷载标准值的取值虽是建立在实测统计资料基础上的保守值,但对吊车荷载及荷载效应的概率模型仅做了初步研究,对工业建筑楼面活荷载和屋面积灰荷载的概率模型目前尚未有研究。工业建筑设计的目标可靠指标是以民用建筑设计校准结果为依据给定的,设计可靠度、鉴定分级可靠度的校准工作均采用民用建筑的可变作用和3种简单荷载组合,未考虑工业建筑特殊可变作用,校准结果是保守和粗略的。工业建筑时变可靠度涉及结构耐久性和吊车梁疲劳问题,是工业建筑全寿命可靠性分析与控制的理论基础,应给予足够重视。The paper reviewed the reliability of industrial buildings and its probability models, including the probability models of variable actions,the design reliability of industrial buildings,the classification reliability of existing industrial buildings,and the time-variant reliability of industrial buildings. It revealed the shortcomings of the current research. The variable actions of industrial buildings include the crane load,the live load on industrial building floor and the fouling load on roof. The characteristic values of these loads in the related specifications of China are conservative based on the measured statistical data,but only the crane load and its load affection was preliminarily studied with some literatures. There are few studies for the corresponding probability models of the live load on industrial building floor and the fouling load on roof. The target reliability index of the industrial buildings design was based on the reliability calibration results of the civil buildings. The calibration works of the design reliability and the classification reliability were used the three simple load combinations in civil buildings,not considering the variable actions of industrial buildings. The time-dependent reliability of industrial buildings was related to the structural durability and the fatigue problems of crane beams. It should be paid much enough attention as the theoretical basis for the life reliability analysis and control of industrial buildings.

关 键 词：工业建筑 概率模型 设计可靠度 鉴定分级可靠度 时变可靠度 

分 类 号：TU311.2[建筑科学—结构工程]