2nd World Congress and Exhibition on Construction and Steel Structure September 22-24, 2016 Las Vegas, Nevada, USA

Biography:

Abstract:

The strength of light steel wall panel depends on stud slenderness and distance between stud. This paper presents details of an experimental study on the load-bearing capacity of light steel wall panels with different configuration of studs, namely single lipped C stud, double back-to-back lipped C stud, and double box lipped C stud. Nine full scale load tests were carried out on wall panels to investigate their performance and to establish a comprehensive database of information. Dry wall boards were used as the sheathing material and providing stability of frame. The loading was primarily distributed over the wall panel through spreader beam to avoid local buckling of wall stud under direct compressive loading of wall panel. Failure modes, compression resistance of wall and wall displacements were observed and then compared to theoretical predictions using current code of practice. Based on the the failure modes obtained from the tests, a design guideline is proposed to determine the load-bearing capacity of light steel wall panel

Biography:

Akinobu Kano has completed his Bachelor’s degree from Tokyo University of Science, Tokyo Japan, in 2016. He is now a Master’s course student at Tokyo University of Science. 

Abstract:

The innovated vibration control device called as scaling frame “SF” structure has been proposed by the authors, and the SF structures are applied to low-rise wooden structures already. This paper aims to investigate the applicability of SF structure on steel frames. Herein, SF structure consists of beam-column frame, diagonal bracing and SF device installed. SF device is made of Steel or aluminum. Vibration energy is absorbed by the plastic behavior of the diagonal deformation of SF device. In previous study, the experimental study on SF device and steel frame specimen, with SF installed, were conducted to clarify the seismic response and seismic mitigation effect. Analytical method has been suggested from observation of test results. By comparing the test results, the proposed method shows good agreement with the test results. Furthermore, the enormous past studies have suggested prediction method of maximum seismic response of vibration control frames. This study aims to develop the prediction method of seismic response on vibration controlled steel frames with SF installed, and the simple design procedure is provided. The simplified restoring force characteristics which can chase the test results was applied on prediction method procedure. The prediction method was reformulated to adapt the bilinear model and strain hardening rule. The time history response analysis was performed to investigate the applicability and effectiveness. From the comparison and analysis of results and predictions, it is confirmed that the proposed prediction method shows enough accuracy.

Biography:

Ahmed Khalafallah is an Assistant Professor at the Department of Civil Engieering, Kuwait University, Kuwait. Prior to joining Kuwait University, he was the Coordinator of the Construction Management program at Western Kentucky University. He holds a PhD degree in Civil Engineering with Computational Science and Engineering option from the University of Illinois. His research interests are in the areas of computational intelligence, risk management, sustainable construction optimization, quality control, and maintenance of infrastructure projects. He accumulated more than 16 years of experience at a number of leading institutes, including the University of Illinois, the University of Central Florida, and Cairo University.

Abstract:

The selection of a competent contractor for a construction project is a critical process to its success, and is usually based on competitive bidding or negotiated contracts. The evaluation of contractor safety performance is not a typical criterion in the selection process, although evidence suggests that such negligence can lead to increased accident rates, productivity losses, and significant cost overruns. This paper presents a framework for an automated decision support system that is designed to aid owners in evaluating contractor safety performance as one of the criteria for contractor selection. The framework is developed in three phases: (1) determining the indicators that depict contractor current and past safety performance and their metrics; (2) soliciting the input of experts regarding the indicators, their metrics, and relative significance; and (3) designing a relational database model to integrate the metrics of the identified indicators into a system that rates the safety performance of a contractor. The envisioned system should prove useful to owners and decision makers in selecting safety-conscious contractors, and can lead to significant safety improvements in an industry rife with hazards and accidents.

Biography:

M.Manikandan is the Sr. Structural Engineer at Gulf Consult-Kuwait with responsibility for Designing and Construction Consultation of the tall buildings, Colleges, Shopping Complexes, Multi story Car Parks, Hospitals, Bridges and Deep Underground structures by considering the Structural requirements and adequate construct able systems to complete the projects within allocated budget and time schedule. Prior to joining Gulf Consult-Kuwait, M.Manikandan has worked as Structural Engineer at several companies, including RECAFCO-Kuwait, SAEED HADI ALDOOSARY EST-Saudi Arabia, Where he has completed many Precast Structures and treatment plant including the deep underground structures with heavy equipment. Notable he is in the construction industry since past 15 years and has completed many land mark projects in Kuwait as well in Saudi. M.Manikandan is pursuing PhD in Risk Management in International Construction Projects as an External Part time researcher with Vels University Chennai-India the expected completion on 2016 and He has been received Civil Engineering Degree from Kamraj University Madurai-India on April, 2000 following that he has received MBA in Project Management from Sikkim Manipal University-India in 2012.

Abstract:

Nowadays the client and architects are looking to have a more floor space utilization ration and unique shape of modern skyscrapers on one hand. The Engineers still tend to optimize a structure to a minimum of weight and optimum passing stress ratios on other hand, which are the hard criterion that available for Engineers during the design of the structures, eventually this criterion leads to structures that are expensive and have a poor quality and complex constructability during the executions phase. For this presentation the 60 story composite steel-concrete twisted peripheral building has been taken as an example to illustrate that the selection of adequate steel members and constructible connections, which leads to have a time reduction, high quality of the structure as a whole and within the budget. A three dimensional 60 stories structure has taken by considering the 4 cylindrical grids spacing 6m, tangential 30o with floor height at base, rest are 5m and 4m respectively. The arch Veirenderal system has been introduced to support the planted column on the grand entrance of the building. ETABS 2015 software has been used to obtain the design the systems with adequate steel sections for beams, columns and bracing members from the standard set of steel sections with grade ASTM A572 Gr50 for W sections, plates and ASTM A500 Gr-50 for tubes., further the concrete grade K800,K600 been considered for walls and slabs correspondingly ,furthermore the metal deck concrete 150mm thick with shear studs ASTM-A108 Gr 1020 dia. 19mm @300 on floor beams are considered as a floor slab, which also acting as a Diaphragm against lateral loads, Furthermore the vertical bracings are provided only in the peripheral alternate bays to limit the Drift against lateral loads such as wind 100mph and Seismic Zone-1. Limcon-V 3.63 has been used to design the connections as per AISC-360 by considering the materials ASTM-A572 Gr 50, ASTM A490 and E70XX for Plates, Bolts and Welds respectively.

Biography:

Halil Sezen has received his B.S., M.S., and Ph.D. degrees from the Middle East Technical University, Ankara, Turkey; Cornell University, New York; and University of California, Berkeley; respectively. Professor Sezen has been a faculty member at The Ohio State University since 2002. He has more than 130 technical publications. He has been serving as an assocaite editor and editorial board member of several journals including the ASCE Journal of Structural Engineering, and Engineering Structures.

Abstract:

• Experimental data from field testing of steel frame buildings will be presented. One to four first-story columns were physically removed from existing buildigns using different methods. Strains and displacements were measured at several critical locations during the removal of columns.
• Computational models and analysis procedures will be presented to simulate collapse response of steel buildings. Static and dynamic analysis of two and three-dimensional structural models will be described. Redistribution of internal forces within the building after the loss of columns will be shown.
• Current progressive collapse design methodologies prescribed in the current code standards and guidelines will be presented.

Biography:

Dr Xiao obtained his PhD from Nottingham University and has been a professor in Structural Engineering since 2010 in LSBU. Prior to this appointment he has researched and was a faculty member at the China Academy of Building Research, the Universities of Birmingham, Nottingham, Southampton and Swansea in UK spanning in the last 28 years. He had worked as a structural engineer at Gifford & Partners, Consulting Engineers. His research interests are on composite materials, steel and composite steel structures and the computational simulation by finite element analysis. He is the author of one patent, over 150 journal and international conference papers.

Abstract:

Steel structures are very critical when subjected to fire. This has been reflected in some recent engineering failures. It is even more critical for composite decking floor with openings which are quite common for commercial and hospital buildings. Numerical simulation of the thermal and structural performance of composite steel-decking flooring system will be discussed in this paper. In the research, a 3-D Finite Element Method (FEM) model has been developed to simulate the time dependent temperature distribution within the concrete slab and steel decking sections by using the non-linear finite element program, ANSYS package. The composite floor has been modelled with exposure to the ISO834 standard fire for over two hours using transient, non-linear thermal analysis. A comparison between the numerical results and experimental results obtained from the fire test conducted were carried out which has shown a very close agreement. The validation has allowed the FE model to be used for an in-depth assessment on the fire performance of composite steel decking floor under the elevated temperatures. The research has shown that fire performance of composite metal decking could be superior to the traditional steel with concrete slabs system.

Biography:

Anica Meins-Becker is, besides her work as Academic councilor the Chair of Construction Management & Economics of the Bergische University of Wuppertal, since 2006 scientific project manager in numerous research projects. The areas of research include f.e. process-oriented planning, acquiring, controlling, controlling and documenting via AutoID technologies and the research cluster logistics. From 1999 to 2006 Anica Meins-Becker worked as a project manager in the area of logistics. She studied industrial engineering at the university of Biberach and civil engineering at the RWTH Aachen.

Abstract:

Since approximately 2005 the Chair of Construction Management & Economics of the Bergische University of Wuppertal deals with the application of modern technologies and methods, f. e. the RFID technology in connection with the method of the Building Information Modeling. In this connection a comprehensive draft with the aim of the digitization of the supply chain was developed within the scope of a huge number of research projects. On this occasion, the data delivered from the planning process are complemented with the real data grasped by the AutoID technology, as f. e. logistics and implementation or decrease data during the execution of construction, servicing and rebuilding data during the building use up to building back construction. These data are linked with the building data models by means of the method BIM. The results of the research and the added value for everybody in the construction sector are united within a demonstration module and a video. For two years this demonstration module was presented to the public in Germany to provide the suitable knowledge in the construction sector for all partners. These projects and the demonstration module should be discussed in the contribution paper which is meant as an introduction to an exemplary application which has found its relation to practice. In the practical example a company in Germany reorganised its whole contractor’s yard. The system is used according to demand as a rent station, material shop, spare parts store, key and document management or as a meeting demand order system.

Biography:

Shek Poi-Ngian joins Universiti Teknologi Malaysia as lecturer in the Faculty of Civil Engineering since March 2010. He is currently a faculty senior lecturer as well as the research fellow in UTM Construction Research Centre (UTM-CRC). Shek received his Bachelor of Engineering (Civil) in year 2005 and Doctor of Philosophy (Structure) in year 2009 from Universiti Teknologi Malaysia respectively. He now is a graduate member in The Institution of Engineers, Malaysia (IEM), Board of Engineers Malaysia (BEM), and Malaysian Society for Engineering & Technology (mSet) as well. Shek’s primary research interests are in the field of steel connection, multi-storey steel frame, light steel framing system, steel and composite structure and load bearing interlocking block system.

Abstract:

The strength of light steel wall panel depends on stud slenderness and distance between stud. This paper presents details of an experimental study on the load-bearing capacity of light steel wall panels with different configuration of studs, namely single lipped C stud, double back-to-back lipped C stud, and double box lipped C stud. Nine full scale load tests are carried out on wall panels to investigate their performance and to establish a comprehensive database of information. Dry wall boards are used as the sheathing material and providing stability of frame. The loading is primarily distributed over the wall panel through spreader beam to avoid local buckling of wall stud under direct compressive loading of wall panel. Failure modes, compression resistance of wall and wall displacements are observed and then compared to theoretical predictions using current code of practice. Based on the the failure modes obtained from the tests, a design guideline is proposed to determine the load-bearing capacity of light steel wall panel.