BEHAVIOUR OF CONNECTION BETWEEN PRECAST HIGH STRENGTH CONCRETE BEAMS AND DECK SLABS
Karim Atef Hassan Sayed;
Abstract
Over the past three decades, bridge deck construction using precast components has become the system of choice for contractors and transportation officials. The choice for precast concrete is due to the rapid erection of its lightweight components, reduction in overall mobilization and equipment costs and its structural durability. Several precast elements are available to meet with all construction requirements. It is often preferable to transport beams and deck slabs separately to reduce the weight of each element. While precast panels perform well under large and highly repetitive loading, the transversal grouted connection between precast beams and deck slabs can become problematic.
The research program included in thesis, evaluate the structural performance of the different types of the connection between precast high strength concrete beams and deck slabs. The main variable in the study was the shear connectors’ distribution along the transversal connection between the beams and deck slabs. The research also evaluates the chemical adhesion between the beams and deck slabs using epoxy resins and grout to connect the beams with the deck slabs without using shear connectors.
Six high strength concrete beam specimens with different shear connector's distribution were tested under static loading conditions, flexural tests were performed to study the parameters mentioned previously and to quantify peak and post-peak behavior of the interface between beams and deck slabs. The different series of tests investigated the surface treatment of the bottom of the slab, the distribution and amount of shear connector and several pocket details. In addition, the effect of chemical adhesion on the behavior of the connection was investigated by using epoxy resin without shear connectors at one of the six beam specimens.
The thesis also presents the analytical program that evaluates the different design approaches of the international standards like ACI-318M 2008, BS8110, ECP-203 2007 and AASHTO LRFD 2007 and comparing these approaches with the test results.
The research program included in thesis, evaluate the structural performance of the different types of the connection between precast high strength concrete beams and deck slabs. The main variable in the study was the shear connectors’ distribution along the transversal connection between the beams and deck slabs. The research also evaluates the chemical adhesion between the beams and deck slabs using epoxy resins and grout to connect the beams with the deck slabs without using shear connectors.
Six high strength concrete beam specimens with different shear connector's distribution were tested under static loading conditions, flexural tests were performed to study the parameters mentioned previously and to quantify peak and post-peak behavior of the interface between beams and deck slabs. The different series of tests investigated the surface treatment of the bottom of the slab, the distribution and amount of shear connector and several pocket details. In addition, the effect of chemical adhesion on the behavior of the connection was investigated by using epoxy resin without shear connectors at one of the six beam specimens.
The thesis also presents the analytical program that evaluates the different design approaches of the international standards like ACI-318M 2008, BS8110, ECP-203 2007 and AASHTO LRFD 2007 and comparing these approaches with the test results.
Other data
| Title | BEHAVIOUR OF CONNECTION BETWEEN PRECAST HIGH STRENGTH CONCRETE BEAMS AND DECK SLABS | Other Titles | سلوك الوصلات بين الكمرات والبلاطات الخرسانية سابقة التجهيز | Authors | Karim Atef Hassan Sayed | Issue Date | 2014 |
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