Abstract
The forces of nature represent the biggest challenge for engineering work in general and perhaps the most prominent of these forces. This generated by earthquake where engineering structure is exposed abnormal loads and stresses which places areal burden on structural engineers to find solutions and structural systems to increase resistance and effectiveness of engineering structure especially high rise concrete structures.
Highlights
IntroductionIncreasing the height of the building increases the effect of lateral loads on the building
Increasing the height of the building increases the effect of lateral loads on the building.The column-beam joints and the contact joint between column and the column in floor are the prominent joints exposed to seismic loads in structure.Strong column—weak beam joint is important concept in resisting seismic loads
This study is devoted to increase resist of structure by increase effectiveness and resistance of the contact joint between column and the column in floor. It is common in construction sites the pouring of concrete columns for each floor separately, the cohesion between columns one top of each for multiple stories structure by extension of steel bars mostly does not exceed 1.0 meter, so full height column of structure can be represented as a group of units of columns pouring one top of each, this may not represent a problem for low-rise structures but for sure represent a problem for high-rise structures especially when structure exposed to seismic loads as shown in (Figure 1 and Figure 2)
Summary
Increasing the height of the building increases the effect of lateral loads on the building. This study is devoted to increase resist of structure by increase effectiveness and resistance of the contact joint between column and the column in floor (column-column joint) It is common in construction sites the pouring of concrete columns for each floor separately, the cohesion between columns one top of each for multiple stories structure by extension of steel bars mostly does not exceed 1.0 meter, so full height column of structure can be represented as a group of units of columns pouring one top of each, this may not represent a problem for low-rise structures but for sure represent a problem for high-rise structures especially when structure exposed to seismic loads as shown in (Figure 1 and Figure 2). Figure 2. photographs of damage caused by earthquakes [2]
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