INTERNATIONAL JOURNAL FOR TRENDS IN ENGINEERING & TECHNOLOGY VOLUME 5 ISSUE 1 – MAY 2015 - ISSN: 2349 - 9303
Numerical Optimization of Shoring Towers for Slab Formwork Systems Suresh Naidu M 1 1
2
VIT University, Graduate Student, School of Mechanical and Building Sciences, maddineni.suresh2013@vit.ac.in
Ramesh Kannan M 2
VIT University, Assistant Professor, School of Mechanical and Building Sciences, rameshkannan.m@vit.ac.in
Abstract— The usage of Shoring Tower for slab formwork is getting increased due to not only because of flexibility in the assemble and construction over Prop-Supported Slab Formwork but also the capacity to withstand maximum construction working loads. The Shoring Tower is generally used for the construction of heavy structures like Bridges, Culverts, staging of Retaining walls, etc. However a comprehensive scale down of the shoring tower design goes well with the large span and increased slab thickness of conventional buildings. This research focuses primarily on Analysis, Modelling, Design and Adaptability of shoring tower for slab formwork through computer models and optimized. The different models are made from the combination of diameter of tubes with slab thickness and also with plywood thickness in Solid Works. Periodic analysis is done in ANSYS for different load combinations with the variations of slab thickness and plywood thickness will gives the optimized results for the slab formwork systems.
Index Terms— conventional buildings, modelling, static analysis, shoring towers, slab formwork systems —————————— ——————————
1 INTRODUCTION
TO
serve the needs of area for the developing population, the best arrangement is the vertical advancement which is the development of tall structures, for example, Bridges, Culverts, staging of Retaining walls and so on. Therefore to accommodate the future developing population, there ought to be diminishment in the horizontal development and rather vertical advancement is advanced. Be that as it may, the execution of vertical improvement is not all that simple following the development of tall structures are exceptionally too complex and requires higher level of development techniques and types of equipment’s and subsequently it couldn't be attained to by the present standard development routines and supplies. For the development of tall structure structures, numerous discriminating variables must be viewed as and the most critical component is the formwork operation, which impact highly on the decrease of construction time, cost and provide economical for the projects. Formwork plays an important role in construction industry on both economy and also execution time. Formwork is commonly based on multitier shoring tower for large and having high clearance concrete construction like commercial, industrial, residential, public and civil engineering projects all over the universe. Shoring towers are regarded as conventional formwork, made up of hand carried elements and are assemble in construction site a new and used as large number of times. Their manufacturing nature has only distinct features like they are module, they are made up of steel or aluminium, they are erected to greater heights as well as for lower heights and also often make up the vertical shoring of industrialized table forms. This shoring towers are preassemble in short module on the ground and they are lifted to required final location using cranes very easily when compare from the other formwork systems which are available now. Shoring towers will increase the quickness in the construction work and also flexibility in assemble and construction which will come on the prop-supported slab formwork system. This can also
increase the capacity to withstand maximum working loads which are coming from construction work. This shoring towers was modelled in Solid Works based on our requirements of the projects and periodic analysis was made with boundary conditions and loading by using ANSYS. The results were discussed carefully in order to get the optimized model from all other.
2 LITERATURE REVIEW In 2000, L.B. Weesner and H.L.Jones explain the experimental and analytical capacity of frame scaffolding. The similarities between the estimated and measured ultimate loads in frames with four different scaffolding, commercial software does indeed provide a reasonable upper bound prediction of ultimate capacity. This paper gives the maximum capacity which can resist the scaffolding. In 2006, I.Puente explains about shore-slab interaction in multistory reinforced concrete buildings during construction. This paper gives the zones were the shore-slab interaction in tall structure to be considered and also way of application of loading on it. In 2010, Hongbo and Wabg explain the experimental and analytical studies on the stability of structural tube and coupler scaffolds without X-bracing. From the full-scale tests and FEM analyses, it is specified that the global flexural buckling along the length of weak axis is the crucial failure section of STCS's.
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