Abstract
The use of partial strength connections has been encouraged by codes and studies on the matter known as semi-continuous construction have proven substantial savings in steel weight of the overall construction. Cruciform column have been introduced to further improve the application of partial strength connection on both axes of the column. The objective in this study is to develop a series of standardized partial strength connections tables of flush end-plate and extended end-plate connections for cruciform column sections. The standardized connection tables were developed based on all possible failure modes that can possible occur in the beam to column connection on both major and minor axis of the column. The moment capacity and shear capacity developed depend on the geometrical aspects of the connections, the size of beams, and columns that are suitably connected together. A method proposed by Steel Construction Institute (SCI) which take into account the requirements in Eurocode 3 and BS 5950: 2000 Part 1 to predict the moment capacity and shear capacity in developing the tables. The moment capacity and shear capacity in the standard tables showed consistent results by comparing with some standardized tables that have been established for hot-rolled British section.
The use of partial strength connections has been encouraged by codes and studies on the matter known as semi-continuous construction have proven substantial savings in steel weight of the overall construction. Cruciform column have been introduced to further improve the application of partial strength connection on both axes of the column. The objective in this study is to develop a series of standardized partial strength connections tables of flush end-plate and extended end-plate connections for cruciform column sections. The standardized connection tables were developed based on all possible failure modes that can possible occur in the beam to column connection on both major and minor axis of the column. The moment capacity and shear capacity developed depend on the geometrical aspects of the connections, the size of beams, and columns that are suitably connected together. A method proposed by Steel Construction Institute (SCI) which take into account the requirements in Eurocode 3 and BS 5950: 2000 Part 1 to predict the moment capacity and shear capacity in developing the tables. The moment capacity and shear capacity in the standard tables showed consistent results by comparing with some standardized tables that have been established for hot-rolled British section.
Current Problem/Background
Traditionally, steel frames are designed either as pinned jointed or rigidly jointed. The beams are assumed as simple supported with pin jointed connections and the columns are assumed to sustain axial and nominal moment only. The connection is simple but the sizes of the beams obtained from this approach result in heavy and deep beam. Rigidly jointed frame results in heavy columns due to the end moments transmitted through the connection. Hence, a more complicated fabrication of the connection could not be avoided. One approach, termed as partial strength connection is usually associated with a connection having a moment capacity less than the moment capacity of the connected beam. The use of partial strength connections has been encouraged by codes and studies on the matter known as semi-continuous construction have proven substantial savings in steel weight of the overall construction. Cruciform column have been introduced to further improve the application of partial strength connection on both axes of the column. This type of column with same moment of inertia on both axes able to increase the strength and stiffness of a column and allow beams connected to the column flange easily using end-plate connection. The standardized connection tables were developed based on all possible failure modes that can possible occur in the beam to column connection. The moment capacity and shear capacity developed depend on the geometrical aspects of the connections, the size of beams, and columns that are suitably connected together. The use of partial strength connection reduced the design moment of the beam due to the partial restraint effect of the connection. The partial restraint of the connection reduces deflection of the beam which will also result in shallower beams. Standardized connection enhances the design process, the preparation of detailing, the fabrication process, and the erection works, which able to reduce the overall construction cost.
Traditionally, steel frames are designed either as pinned jointed or rigidly jointed. The beams are assumed as simple supported with pin jointed connections and the columns are assumed to sustain axial and nominal moment only. The connection is simple but the sizes of the beams obtained from this approach result in heavy and deep beam. Rigidly jointed frame results in heavy columns due to the end moments transmitted through the connection. Hence, a more complicated fabrication of the connection could not be avoided. One approach, termed as partial strength connection is usually associated with a connection having a moment capacity less than the moment capacity of the connected beam. The use of partial strength connections has been encouraged by codes and studies on the matter known as semi-continuous construction have proven substantial savings in steel weight of the overall construction. Cruciform column have been introduced to further improve the application of partial strength connection on both axes of the column. This type of column with same moment of inertia on both axes able to increase the strength and stiffness of a column and allow beams connected to the column flange easily using end-plate connection. The standardized connection tables were developed based on all possible failure modes that can possible occur in the beam to column connection. The moment capacity and shear capacity developed depend on the geometrical aspects of the connections, the size of beams, and columns that are suitably connected together. The use of partial strength connection reduced the design moment of the beam due to the partial restraint effect of the connection. The partial restraint of the connection reduces deflection of the beam which will also result in shallower beams. Standardized connection enhances the design process, the preparation of detailing, the fabrication process, and the erection works, which able to reduce the overall construction cost.
Source: rmc.utm.my/inatex
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