الفهرس 
Pocket Connection concept
Structural design of specimensOnly 14 pages are availabe for public view
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Abstract
Introducing of fast construction techniques to the field of construction of R.C structures has come more and more urgently needed nowadays especially for bridges construction. The vast majority of R.C bridges are constructed above overcrowded roads, so the construction works leads to the aggravation of the traffic congestion, so the more construction time taken the more traffic congestion with its side effects on the national income and public health will be.
Introducing a connection between a precast column and a precast or cast in place foundation that is fast, cheap and easy to construct will be of a great importance nowadays especially for its saving of time which is estimated to be 60% of that taken by cast in place column and this ratio increases as the number of constructed columns increases.
To date, the experimental investigations addressing the pocket connections are very limited and are dedicated to studying of the experimental behavior of the externally embedded pocket connections.
Accordingly, an experimental investigation is made in this research to investigate the behavior of three types of pocket connections (Externally embedded, Partially embedded and Internally embedded pocket connections) with smooth surface interface pocket connections with different embedded depths under vertical and horizontal simultaneous loads. Besides, the existing design models are observed to be very conservative and results in a different reinforcement values. Accordingly, a Strut and Tie design model is proposed and verified according to the experimental results. According to the Strut and Tie design model a design charts are presented in this research to design the externally embedded pocket connections with design recommendations to be used in the partially embedded and fully embedded pocket connections.