土木專業(yè)畢業(yè)設(shè)計(jì)中英對照外文翻譯--建筑結(jié)構(gòu)在沖擊負(fù)載作用下連續(xù)倒塌分析方法-建筑結(jié)構(gòu)-wenkub
2023-05-19 14:29:47 本頁面
【正文】 fined as“the spread of an initial local failure from element to element resulting in the collapse of an entire structure or a disproportionately large part of it”. It refers to the failure of one or a group of key structural load—carrying members that give rise to a more widespread failure of the surrounding members and partial or plete structural collapse． Progressive collapse of building structures might be induced by a series of accidental and intentional events such as false construction order， local failure due to accidental overload，damage of critical ponent by explosion and earthquake． This paper only focuses on progressive collapse analysis of building structures induced by abnormal loads， such as blast and impact． With the recent progressive collapse of Alfred P． Murrah Federal Building and world Trade Center (WTC))researches are more focused than ever on constructing buildings safer from progressive collapse induced by blast and impact loads． Progressive collapse analysis is essential for an economic and safe design of building structures against progressive collapse to blast and impact loads． Because of the catastrophic nature of progressive collapse and the potentially high cost of constructing or retrofitting buildings to resist it， it is imperative that the progressive collapse analysis methods be reliable． For engineers， their methodology to carry out progressive collapse uation need not only to be accurate and concise， but also be easily used and works fast． Thus， many researchers have been spending lots of effort in developing reliable， efficient and straightforward progressive collapse analysis methods recently． The current available methods in analyzing structural progressive collapse could be classified into two major categories， namely the direct simulation method， in which the blast loading effects on structural damage and building collapse are directly simulated， and uncoupled alternative load path method with analysis of the structure by simulating various levels of damage by the removal of key load—carrying members． In the present paper， the available progressive collapse analysis methods in the literature are reviewed according to their categories． Both advantages and disadvantages of each method are listed． Their suitability， applicability and reliability are also discussed． Our recently proposed new method for progressive collapse analysis of reinforced concrete frames under blast 1oads is al so introduced． 1. Progressive collapse analysis methods for building structures. In this section， the current methods for analyzing structural progressive collapse available in the literature are presented in two major categories， namely the direct simulation method and the alternative load path method． Direct simulation method For the direct simulation method， the building structures， air， and explosive are all modeled in detail． Explosion， blast wave propagation and its interaction with structures all need to be simulated， if not， blast and impact loads acting on the building structure should be derived and directly applied to structural ponents． The material nonlinear behavior and dynamic effects and damage due to blast or impact are mostly included in the simulation． This section will list typical applications of dir
畢業(yè)設(shè)計(jì)相關(guān)推薦
鄂ICP備17016276號-1