Axial load against slab thickness on corner, edge, center, outer and inner column demonstrated the incompatibility for both methods, finite element method and tributary area method in determining the axial loading from superstructure.Ībstract: Using the explicit finite difference code FLAC3D, the behavior of pile adjacent to braced excavation is investigated. Results has shown the increasing of slab thickness will indirectly increases the rigidity characteristic of slab and potential to distribute the axial load equally for all column members. Models of slab were then varies and studies through comparison with broad dimensions of slab thickness, ranging in 100 mm to 600 mm.
Axial loading, represented as products from dead load and service load, which are imposed on the top of slab is directly transmit to the column nearby and modelled through computer simulation. However, the compatibility of both methods in order to determine the loading from superstructure is prime important and has been investigated in this research framework. Recently, there have several techniques that can be utilized to determine the superstructure loading, such as finite element method and tributary area method. This idea normally required sound knowledge of structural design and rational engineering judgments. Shear cracks were observed on the specimens with low axial force, but the cracks were relatively decreased when increasing the axial load.Ībstract: Basic concept of structural design is to transmit the loading from superstructure to substructure. The specimens with high axial load yield higher peak impact force value and less mid-span deflection. It is found that the axial loads have a great effect on the impact responses of the RC columns. Shear reinforcement spacing varies from mm to mm. The magnitude of the axial load varies from 0% to 40% of the ultimate axial capacity of the concrete section.
Both ends of the column were fully restrained. Every specimen has an identical cross section of 220 mm by 220 mm, with 3,000 mm of clear span length. Sixteen reinforced concretes columns were subjected to an impact load created by dropping 300 kg hammer at the height of 1,200 mm above the mid-span of the column. This paper aims to investigate the impact responses of reinforced concrete columns with different axial load and shear capacity by using numerical simulation method. For the two buildings with different story height, the pounding induces impact load and local stress at column mid-height where the provided column reinforcement is normally lesser than the column’s edge. Abstract: Building collapses from the seismic pounding of two adjacent buildings have been found in many past earthquakes.