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عنوان فارسی مقاله:
رفتارفشرده سازی محوری بتن پر شده ستون لوله های فولادی
عنوان انگلیسی مقاله:
Axial Compression Behaviour of Long Concrete Filled Double Skinned Steel Tubular Columns
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
The concept of CFDST was first introduced in underwater pressure vessels [1], where the high bending stiffness of the cross-section was utilized to prevent instability under external pressure. It is also applicable for nuclear, liquid and gas containment, and blast resistant shelters [1]. Owing to its good damping and energy absorption properties and light weight cross-sections, CFDST was used as tall piers for bridges in Japan [2]. Further, CFDST columns have been used in electric transmission towers in China [3]. They are predicted to perform well under blast load [4], impact load [5] and in the instance of fire, they show better structural response due to the presence of concrete encased inner tube [6]. The inner steel tube also plays an important role in mitigating a rupture failure when ultra-high strength materials are used [7]. A state-of-art report on development and advanced applications of concrete filled steel tubular structures is reported by Han et al. (2014) [8]. Studies were carried out on CFDST stub columns having L/D b 5, [2,9, 10,11]. However, studies to ascertain the behaviour of long column CFDST is limited. Mechanics based model was developed by Han et al. (2009) [12], to predict the beam-column behaviour of CFDST section under axial and cyclic loading and design formulae for CFDST columns and beam-columns were suggested. Tapered CFDST long columns were studied experimentally and numerically Li et al. (2013) [13], and an equation to predict the elastic buckling capacity of tapered CFDST long column is recommended. Finite Element Analysis (FEA) model was developed in ABAQUS to study the preload effect on steel tubes in CFDST column and design formulae were proposed to estimate the reduced axial strength of CFDST with preloads [14]. It was observed that the column slenderness has the highest significance on CFDST column strength index. Even though, long column range is covered in the above studies, the parameters considered are on diverse features like, tapered section, eccentric loading, preloads etc.
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کلمات کلیدی:
Behaviour and design of square concrete-filled double skin tubular ... https://www.researchgate.net/.../279461250_Behaviour_and_design_of_square_concrete... Concrete-filled double skin tubular (CFDST) columns consist of two concentric steel tubes, the void between which is filled with concrete. For the current studied ... Behaviour of concrete-filled double skin rectangular ... - Academia.edu www.academia.edu/.../Behaviour_of_concrete-filled_double_skin_rectangular_steel_t... Behaviour of concrete-filled double skin rectangular steel tubular beam–columns ..... Test set-up and instrumentation occurred initially on the longer sides. [PDF]Concrete-filled Double-skin Tubular Columns with External Steel Rings www.aees.org.au/wp-content/uploads/2013/11/17-HO.pdf by CX Dong - Cited by 1 - Related articles Dec 7, 2013 - type of column is known as concrete-filled double skin tubular (CFDST) column. ... In this study, the uni-axial behaviour of CFDST columns with external steel ..... columns subjected to long-term sustained loading”, Thin-walled ... Behavior and Calculations of Concrete-filled Double Skin Steel Tubular https://www.scribd.com/.../Behavior-and-Calculations-of-Concrete-filled-Double-Skin... Behaviour and Calculations of Concrete-Filled Double Skin Steel Tubular (CFDST) MembersLin-Hai Han * Fei-Yu Li... Behavior of Fire Exposed Concrete-Filled Double Skin Steel Tubular ... https://www.scientific.net/AMM.773-774.938 by SS Mohd Zuki - 2015 - Cited by 1 - Related articles This paper presents the result of an experimental investigation of axial behavior of concrete-filled double skin steel tubular (CFDST) columns exposed to high ... Tubular Structures XIV - Page 110 - Google Books Result https://books.google.com/books?isbn=020307310X Leroy Gardner - 2012 - Technology & Engineering 7 DESIGN CRITERIA In general terms, concrete filled double skin symmetric sections are ... Strength deformation behaviour of circular concrete filled steel tubes ...
