DEVELOPMENT OF DESIGN CRITERIA FOR REINFORCED CONCRETE BOX CULVERTS. PART I: STRENGTH AND BEHAVIOR OF REINFORCED CONCRETE BEAMS AND FRAMES.
ILLINOIS UNIV URBANA DEPT OF CIVIL ENGINEERING
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The results of 57 tests on simply-supported beams and 24 tests on frame members are described and correlated in this report. The main object of these tests was to study the behavior and strength in shear of reinforced concrete members a few tests were intended to study the flexural strength of under-reinforced members under axial load and bending. The ultimate objective of the test program was to obtain information which would permit the development of more rational design criteria for reinforced concrete box culverts. Fundamental knowledge was first acquired through tests of simplysupported beams under various conditions of loading. And, finally, tests were made on 24 frames under conditions simulating closely those in the horizontal member of a box culvert section three of these frames had web reinfrocement in the form of bent bars. The following major variables were studied during the course of the investigation type of loading, concrete strength, steel percentage, ratio of span length to effective depth, ratio of shear span to effective depth, and ratio of axial to vertical load. The simply-supported beams were tested under one or two concentrated loads, or under uniform load.
- Ceramics, Refractories and Glass
- Structural Engineering and Building Technology