Concrete filled steel tubular cfst columns exhibit numerous favourable. Download full civil engineering seminars in doc, pdf or ppt format. Abstract concrete filled steel tubular cfst columns are increasingly used in bridge piers and highrise buildings due to. Concrete filled steel tubular cfst members utilize the advantages of both steel and concrete. Concrete filled steel tube cfst is the composite section formed by filling concrete into a hollow steel tube. Concretefilled steel tubes cfts are composite members consisting of an steel tube infilled with concrete. The modes of failure and the bond between steel and concrete columns are discussed in the subsequent headings comprehensively. Axial compression loads,the 14thworld conference on. Structural rehabilitation of columns with reinforced concrete jacketing esju.
The bond between steel and concrete in cfst column always remain a point of uncertainty, so to enhance bond between steel and concrete in cfst column, it is of great interest to use of mechanical shear connectors at the interface between. Concrete technology seminar topics engineers world online. Cfst columns used concrete 62% less and steel 5%10% less than that of rc columns. Explore reinforced concrete corroded columns with free download of seminar report and ppt in pdf and doc format. The experimental studies conducted made them to a conclude that the load carrying capacity of cfst columns increased with the usage of shear connectors from 17. Vtu civil engineering seminar topics with pdf reports and ppt. These cfst columns are generally associated with the increase in concrete compressive strength due to confinement effect by the steel tube. Finite element analysis of slender composite column. Seismic performance of concrete filled steel tube cfst. Behaviour of demountable cfst columncolumn connections dongxu li.
Civil engineering seminar topics with ppt seminar topics. Summary of research on concrete filled steel tubular cfst. Clifton4 abstract concretefilled steel tubes cfsts columns are used extensively in. Seminar presentation is a key element for each engineering student to have more communication skills and develop leadership qualities. Loadbearing capacity of concretefilled steel columns 22 for composite construction, combines the design approach of both structural steelwork and reinforced concrete columns. This paper deals with three different configurations of stiffeners such as single stiffeners, diagonal stiffeners and tshaped stiffenersand arriving at the most suitable arrangement which enhances the ultimate load carrying capacity of cfst columns. Studies on mechanical properties of stub columns of axial compression concrete filled circular steel tubes based on new mechanical analysis program. Mar 31, 2016 composite columns have superior strength and ductility performance, and they have become more widely accepted in the engineering applications. Here is a list of 499 non technical seminar topics for civil engineering students collection of 2012 civil engineering seminar topics collection part 1 civil engineering seminar topics collection pa. Concrete filled steel tubular cfst columns in composite. The principal experimental parameters were concrete and steel strengths, tube diameter to wall thickness ratio, and column slenderness ratio. Civil engineering seminar topic, latest topics for seminar. Abstracta threedimensional nonlinear finite element model using ansys code has been used to conduct a parametric study presented in this paper.
This study aims to present a new formulation for the axial load carrying capacity n u of circular concrete filled steel tubular cfst short columns having various geometrical and material properties. Axial capacity of cfst columns are significantly affected with the crosssection of the column 22. It also introduces some recent developments on cfst structures. Compared with steel column, cfst ones used steel is 50% less and decreases cost 45%. They are widely used in highrise and multistory buildings as columns and beam columns. Moreover, it can reduce the height of the spandrel columns. Even though from sixties, there are a few use of cfst members in high rise buildings and heavily loaded structures in different parts of the world like usa, uk, japan, china, etc. Design and behavior of concretefilled elliptical steel stub columns at elevated temperatures prepared by. It addresses the performance and design methods of cfst columns under fire condition.
This type bridge can also have large spaning capacity. Structural steelconcrete composite research group annual. Concrete filled steel tube columns chapter 1 introduction concrete filled steel tubular cfst members utilize the advantages of both steeland concrete. Use custom search function to get better results from our thousands of pages use for compulsory search eg. Ultimate capacity prediction of axially loaded cfst short. Axial bearing capacity of steel reinforced concrete short. Comparison of experimental values with ec 4, aci318, aisclrfd of concrete filled steel fluted columns for concentric load. Civil engineering seminar topic, latest civil engineering seminar topics collection with reports and ppt in pdf. A reduced beam section rbs is a common method to make the beams weaker than columns. Form and latin hypercube method reliability analysis of. This study aims to present a new formulation for the axial load carrying capacity n u of circular concrete filled steel tubular cfst short columns having various geometrical and.
Based on the twin shear unified strength theory, analyzing the condition of load for the steel tube and the coreconcrete under triaxial compression, the formula of axial bearing capacity of steel reinforced concrete short column with double circular steel tubes was established and the influencing factors on it were discussed. Conference on composite construction in steel and concrete iv, asce, may 28. The results of 62 concentrically loaded scale model columns filled with high strength concrete 46100 mp a are presented. Columns support compressive loads from roofs, floors, or bridge decks. In recent years, it was proposed by several researchers that concrete filled double skin steel tubes cfdst be studied for their strength as a column or a beam. Design and behavior of concretefilled elliptical steel stub columns at elevated temperature 2 ce 499 graduation project approval we hereby approve the report entitled. The results revealed that the impact resistance given by glassfrp wrapped cfst columns was notorious when compared to that by carbonfrp, in terms of time. Study of material property of concrete filled steel tubular columns. Developments and advanced applications of concretefilled. Pdf ultimate capacity prediction of axially loaded cfst. It is expected that the cfdst columns can obtain a higher fire resistance period than the cfst columns, due to the inner tubes of the composite columns being protected by the sandwiched concrete during fire. The newest nz bridge manual nz transport agency, 2014 updates and refines. A stressstrain model for a square steel tube was also formulated based on the experimental results 12. Also, this is a great way to express your interest.
In collaboration with dr zhibin wang and associate professor qing yu, professor zhong tao developed a new finite element model for cfst columns. They comprise of a steel hollow section of circular or rectangular shape filled with plain or reinforced concrete. Cfst beams and columns and not frames or buildings as such. Keywords concrete filled steel tubes, cfst columns, composite frames. The civil topic of the seminar you selected will determine your favourite civil engineering subject. Evaluation of creep coefficient on concretefilled steel tubular columns mustafa hilmi acar department of civil engineering, akdeniz university, 07058 kampusantalya,turkey received 1 september 2006. Evaluation of creep coefficient on concretefilled steel.
Many longspan cfst halfthrough true arch bridges have been built. An innovative type of joint, circular cfst column welds. A total of 8 cfst columns, including 4 with circular cross sections and 4 with square cross sections, were tested under closerange blasts. Smaller cross sections than reinforced concrete columns, better fire. Study of material property of concrete filled steel. Comparative study of concrete filled steel tube columns under. Civil engineering seminar topics with ppt seminar topics for civil engineering. Abstract this paper investigates blast resistance and residual strength of concretefilled steel tube cfst columns under closerange blast loads. The deformation is in circular section is 2025 percent smaller compared to square section. Two kinds of columns, including cfst columns with foundation and columns without foundation, were tested. This paper describes a series of tests on steel tubular short columns of circular section filled with normal concrete na and recycled aggregate concrete rac. In modern structures, cfst columns are extensively used due to its numerous advantages.
It is thus expected that concrete filled double skin steel tubes cfdst have a potential of being used in building structures. Connections to concretefilled tubular columns are discussed. Cfst columns clarification of design procedure for pile caps coir mat. Pdf performance of concrete filled steel tube cfst. Pdf performance of concrete filled stainless steel tubular cfsst.
Design of concrete filled tubular beamcolumns with high. Flexural performance of concrete filled steel tube beams. In current international practice, cft columns are used in the primary lateral resistance systems of both braced and unbraced building structures. Seismic behavior of concrete filled steel tubular laced column. Base on the achievement and research on the concrete filled steel tube cfst, with 4 aspects. Compression behaviour of concrete filled aluminium section and retrofitted using basalt strips free download as powerpoint presentation. Seminar topics on water resource and waste management engineering. The provisions shall also apply to the design of reinforced concrete. Design strength of concretefilled steel columns 167 2. Abstract an efficient method of resisting lateral loads for buildings in the 60plusstory range is to position columns farthest from the building center with shearresisting elements in between. Steel isection beams and circular cfst columns composed the frame structures. This reduces the carbon footprint on the environment. Nonlinear finite element analysis of concrete filled steel.
Pdf finite element analysis of steel beamcfst column. Thus, the weight of cfst column does not more than that of a steel column. An experimental study of highstrength cfst columns subjected to axial load and nonconstant bending moments. Many literature works mentioned above were based on cfst columns. Tubular structures xiv proceedings of the 14th international symposium on tubular structures, ists 2012, 5158. Out of eleven cfst columns, eight columns were wrapped with carbonfrp, two columns were wrapped with glassfrp and remaining one as control specimen. The global stability of the column is controlled by the overall. Pdf concrete filled stainless steel tubular cfsst columns have attracted increasing research interests in the. Twentytwo specimens, including 11 small diameter of racfilled steel tubular racfst columns named ca series and 11 larger diameter of racfst columns called cb series, were tested to research the influence of variations in. Seismic performance of concretefilled steel tubular cfst.
Review of fire performance experiment of concretefilled. Performance and calculations of recycled aggregate. Theaim of this parametric study is to study the load carrying capacity and postyield characteristics of axially loaded concrete. Conference paper pdf available december 2015 with 7,377 reads. Parametric analysis on the circular cfst column and rbs. Feb 20, 2020 explore best computer seminar topics pdf, computer science cse engineering and technology seminar topics, latest cse mca it seminar papers 2015 2016, recent essay topics, speech ideas, dissertation, thesis, ieee and mca seminar topics, reports, synopsis, advantanges, disadvantages, abstracts, presentation pdf, doc and ppt for final year be, btech, mtech, msc, bsc, mca and bca 2015, 2016. Latest seminar topics for civil engineering 2014, seminar topics for civil.
Huang yijie 1,2, sun yuedong 1, sun huangsheng 1,2. So studies should be conducted to determine the efficiency of bringing these elements into the designing scenario of modern building. High rise buildings using steel or concrete researchomatic. Effect of stiffeners on the axial load carrying capacity. Mar 28, 20 the size of column is smaller, increases the usable floor area by 3. Pdf concrete filled steel tube is gaining more popularity now a days in construction area. Finite element analysis of steel beamcfst column joints with blind bolts conference paper pdf available july 2014 with 1,227 reads how we measure reads. Water resource and waste management engineering seminar topics. Apr 15, 2014 this paper describes a series of tests on steel tubular short columns of circular section filled with normal concrete na and recycled aggregate concrete rac. Ultimate capacity prediction of axially loaded cfst short columns article pdf available in international journal of steel structures 161. Axial capacity of cfst columns are significantly affected with the crosssection of the column. Modeling of cfst column design of parametric study the column crosssection for concrete core was fixed at 150 x 150 mm. Also explore the seminar topics paper on reinforced concrete corroded columns with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year civil engineering ce or ieee civil construction btech, be, mtech students for. The advantages of concrete filled steel tube cfst columns have proved its usefulness in the structural applications of the constructions.
Cfst columns and considered the hole rate, concrete strength grade, and slenderness ratio. Behaviour of demountable cfst columncolumn connections. Fclu public seminar concretefilled tubular members and. Experimental behaviour of recycled aggregate concrete. Seminar brochure september 2018 pages12 ci ratings. Pdf load bearing capability of cfst columns with and. Pdf concretefilled steel tube column systemits advantages. Steel innovations conference 2015 auckland, new zealand. Recent breakthrough in application of high strength steel and concrete was seen in the construction of techno station in tokyo japan, as shown in fig. Many experiments have been performed under cfst columns but code have been arrived for its effective use. Studies on columns of various types carried out by the european community have resulted in the recommendation for adopting a family of design curves. International symposium on tubular structures, april 35, dusseldorf, germany. A concretefilled steel tubular cfst column is formed by filling a steel tube with concrete.
When compared to the column using hollow steel section, the steel usage for the cfst column was only a half, and the use of very thick steel plate was prevented. Concrete technology seminar topics for civil engineering. For composite joints consisted of circular cfst columns and steel beams, han and. Scribd is the worlds largest social reading and publishing site. Experimental behavior of concrete filled steel tube cfst. The cfst section resists applied load through the composite action of concrete and steel, this advantageous interactive behavior between. However, the filled tubular columns require more attention. This page contains a huge list of latest 20142015 civil seminar topics with report and presentation,civil engineering presentation topics and advanced research topics with ppt and abstract of seminar topics based on technical papers. Behavior of concrete filled steel tube column ijedr1401056 international journal of engineering development and research. The studies on cfst columns had started since 1980s, due to its wide applications many researchers have conducted experiments to study different parameters of cfst columns. This study aims to present a new formulation for the axial load carrying capacity n u of circular concrete filled steel tubular cfst short columns having various geometrical and material. Pdf the behavior of concretefilled steel tube cfst columns subjected to axial compression was. Parametric study of concrete filled steel tube column. They comprise of a steel hollow section of circular or rectangular shapefilled with plain or reinforced concrete.
Performance and calculations of recycled aggregate concrete. Are you searching for civil seminar topic ppt ideas. Problem statement composite frames consisting of concretefilled steel tubular cfst columns and steel beams named cfst frames in this paper are being used more and more popularly in building structures. It is well known that concretefilled steel tubular cfst columns are. Concrete filled steel tubes a comparison of international codes and practices. International journal of engineering applied sciences and. Cfrp strengthened cfst columns under vehicular impact md iftekharul alam1, sabrina fawzia1 and chamila batuwitage1 1school of civil engineering and built environment, science and engineering faculty, queensland university of technology, qld, australia. Seminar presentation is a key element of civil engineering. Composite columns have superior strength and ductility performance, and they have become more widely accepted in the engineering applications. Normally the concrete filled columns without shear connectors, under major loads they undergo buckling phenomena, in order to overcome this phenomena, concrete filled steel tube cfst columns were taken in to an account because of its greater. The columns tested were classified as short thin walled. Compression behaviour of concrete filled aluminium section. Meanwhile, rbs primarily yield and buckle under seismic loadings, and improves the.
Pushout tests and bond strength of rectangular cfst columns. Parametric study of concrete filled steel tube column darshika k. Reinforced concrete corroded columns seminar report, ppt. Ho2 1 department of civil engineering, the university of hong kong 2 school of civil engineering, the university of queensland, qld 4072, australia. Pdf behavior of concretefilled steel tube columns subjected to. Seismic response of building with peripheral cfst columns along with interior rc columns has been.
The new model is very versatile and accurate to be used in modelling cfst columns, even when highstrength. Study of material property of concrete filled steel tubular. Based on the results of the study, the following conclusions can be drawn. The building, which utilised concrete filled tubes with 780 mpa high strength steel and 160 mpa ultrahigh strength concrete, was able to reduce the column dimension from 800 mm based on normal strength materials to 500 mm. Download full civil engineering seminar topics with ppt in doc, pdf format.
Ultimate capacity prediction of axially loaded cfst short columns. Comparison of experimental values with ec 4, aci318, aisc. Different limitations on the compressive strength of concrete, steel yield strength, diametertothickness ratio. School of civil engineering and architecture, shandong university of science and technology, qingdao 266590, shandong, china. The main goal of the study is to determine whether cfst columns can be designed to. Seismic performance of concrete filled steel tubular. Although there have been some empirical relations for predicting n u in. Civil engineering seminar topic ppthuge list of latest. Though, application of cfst columns are gaining popularity, the. Behavior of concretefilled steel tube columns subjected. Repair and rehabilitation structural rehabilitation of. Columns transmit the vertical forces to the foundations and into the subsoil.
Hence, cfst columns reduce the amount of expensive steel required to support the given load substantially, while the dimensions of the column are smaller than those of a reinforced cement concrete column of the same strength there by increasing the available floor space. Finally, the steel tube serves as longitudinal reinforcement and permanent formwork for the concrete core. A concretefilled steel tubular cfst column is formed by filling a steel tube with. Such phenomenon has been demonstrated for short columns withnormal strength concrete core while studies on ultra highstrength concrete uhsc filled circular. The cfst columns do not require formwork and additional steel reinforcement, and the steel tube protects its surface from impact and abrasion. Point out that the research on the bond theory of interface. This paper shows the comparison of a circular and square cfst column with varying grades of concrete 30, 50, 70 nmm2 and for axial load, for their ultimate load carrying. In this study we will evaluate the seismic performance of concrete filled steel tube cfst bridge columns for potential use in emergency or accelerated bridge construction abc projects. Design and behavior of concretefilled elliptical steel. Parametric study of 8 cfst columns were performed using finite element analysis.
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