CYCLIC LOADING TEST CONDUCTED ON THE BOTTOM JOINTS OF A HYBRID PRECAST UTILITY TUNNEL COMPOSED OF DOUBLE-SKIN SIDEWALLS AND A PRECAST BOTTOM SLAB

Cyclic Loading Test Conducted on the Bottom Joints of a Hybrid Precast Utility Tunnel Composed of Double-Skin Sidewalls and a Precast Bottom Slab

Four full-scale specimens were constructed, including two hybrid precast specimens with a haunch (height: 150 Eye Patch mm, PUT-H) and without a haunch (PUT).Additionally, two cast-in-place (CIP) comparative specimens (referred to as RUT-H and RUT) were included, all of which underwent reversed cyclic loading.The results showed that the four specim

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Study on factors affecting vertical drilling bottom hole assembly performance and a new bottom hole assembly design method considering formation uncertainties

Drilling a deep vertical well at a low cost is very important for accelerating the exploration and development of oil and gas resources.Vertical drilling BHA design is the key to drill a vertical well, however the BHA design is still an art not science in some formation.In this paper, a new mechanical model of bent-housing motor BHA is established,

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BEHAVIOR OF THE TEN LARGEST BRAZILIAN BANKS DURING THE SUBPRIME CRISIS: AN ANALYSIS BASED ON FINANCIAL INDICATORS

The aim of this paper is to demonstrate the behavior of the ten largest Brazilian banks between June 2008 and September 2009, based on the analysis of financial indicators.Therefore, 16 three-monthly indices were calculated, extracted from financial Tops statement information, which characterizes a documentary research.The indices were separated in

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