土木工程外文翻譯-wenkub
2023-01-30 02:18:57 本頁面
【正文】 ixture proportioning methods for conventional concrete have been applied with minor modifications to design RCAconcrete mixtures. A principal modification has been the increase in the cement content, with no special consideration given to the residual mortar volume fraction of Although by suitable adjustment of the cement content and watercement ratio (w/c) of mixtures involving RCA, concrete with higher pressive strength than the concrete from which the RCA originated has been produced,3 such adjustments have not resulted in parable RCAconcrete possessing superior elastic modulus, bond strength, or stressstrain characteristics to similar grade conventional ,4 Consequently, it has been reported that structural members made from RCAconcrete experience larger deflection, exhibit wider cracks and smaller crack spacing, and have relatively lower flexural strength pared to the panion conventional concrete This kind of variability constitutes a drawback and discourages its use because it creates uncertainty with respect to the serviceability and longterm performance of RCAconcrete structures.To overe this problem, in a separate investigation,described in detail elsewhere, the authors developed a new mixture proportioning method for RCAconcrete called the equivalent mortar volume (EMV) In this method, RCA is treated as a twophase posite material prising residual mortar and original natural aggregate。由此，地基條件或其他組件的改變可能是因?yàn)橐肓说刭|(zhì)條件?？拐鹨?guī)范規(guī)定一定要保證適當(dāng)?shù)难诱剐院秃侠淼目拐鹦阅?，比如鋼筋閉合長度、搭接長度和梁支座長度可以不予考慮，只有一組梁是用來抵抗支承橋面發(fā)生橫向運(yùn)動(dòng)的。這項(xiàng)研究調(diào)查的多座多跨簡支預(yù)制橋中，其中具有代表性的一座坐落在華盛頓州。 英文原文2Seismic Behavior and Capacity/Demand Analyses of a SimplySupported MultiSpan Precast BridgeNasim Shatarat and Adel Assaf International Journal of Applied Science, Engineering and Technology 5:4 2009ACOMMONLY used type of bridges in Washington State (WA) in the 1950’s and 1960’s is MultiSpanSimplySupported (MSSS) precast system. This system was proven at the time to be easy to be designed and to be constructed. The design
公司管理相關(guān)推薦
鄂ICP備17016276號(hào)-1