Explains the science of cracking in an uncomplicated way, giving those who wish to make precise calculations the means and examples to do so.
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Existing design codes recommend hairpins and surface reinforcement
consisting of hooked bars encasing an edge reinforcement
to improve the behavior of anchor connections in shear. Concrete
breakout is assumed to occur before anchor reinforcement takes
effect in the current design methods. This paper presents an alternative
design method for anchor shear reinforcement. The proposed
anchor shear reinforcement consists of a group of closed stirrups
proportioned to resist the code-specified anchor steel capacity in
shear and placed within a distance from the anchor bolt equal to
the front-edge distance. Steel fracture was achieved in the tests of
twenty 25 mm (1 in.) reinforced anchors with a front-edge distance
of 152 mm (6 in.). Meanwhile, the observed anchor capacities
were smaller than the code-specified anchor steel capacity in
shear because concrete cover spalling caused combined bending
and shear action in the anchor bolts. Reinforcing bars are needed
along all concrete surfaces to minimize concrete damage in front
of reinforced anchors for consistent seismic behavior in shear.
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Author: Dr. Gue See Sew | Size: 8.9 MB | Format:PDF | Quality:Unspecified | Publisher: Dr. Gue See Sew | Year: 2007 | pages: 213
Presentation
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Diagrid tube structures are expected to be used for the outer tubes of super tall tube-in-tube buildings. The mechanical behavior and design method of X-shaped reinforced concrete joints, which are formed by four crossed inclined columns and horizontal girders, are important issues in the design and analysis of vertical crossing lattice tube. Taking the volumetric ratio of the stirrup and the loading pattern as fundamental parameters, four X-shaped reinforced concrete joints were designed and subjected to static axial load testing. The test phenomenon—including deformation of joint zones, development of cracks, and crushing of concrete— is strongly emphasized in the analysis. The laws of the stiffness response and stress development in longitudinal bars and stirrups are revealed, and the ultimate load-bearing capacity of four joints is obtained. The test results show that the stirrups may confine the lateral expanding deformation of the joint concrete regions.
The X-shaped reinforced concrete joints with normal volumetric ratios of stirrups may be designed to provide large stiffness and high load-bearing capacity, which are also effective in transmitting the inner force from four crossed inclined columns. Adopting two loading patterns—agreeing and differential loads—on four inclined columns has little influence on the load-bearing capacity of the joints. Based on the results of the test and analysis, design recommendations and formulas of the bearing capacity for X-shaped reinforced concrete joints in vertical crossing lattice structures are proposed.
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Dear Admin.
really I'm proud of our forum and we have to mention to your effort and your generosity
day by day we see the new and every one here is indebted to you and your forum
already we have a section ( Non-English written codes ) - so , my suggestion is - can we open a new section for the materials which created by other language like training vedio ????
the aim of my suggestion is to cover all members requirements insted of publishing or searching in other forums and make our members always related with our great forum
thanks in advance
mowafi3m
Author: Kerry J Howe; David W Hand; John C Crittenden; R Rhodes Trussell; George Tchobanoglous | Size: 16 MB | Format:PDF | Quality:Unspecified | Publisher: Wiley | Year: 2012 | pages: 674 | ISBN: 9781118309674
Principles of Water Treatment has been developed from the best selling reference work Water Treatment, 3rd edition by the same author team. It maintains the same quality writing, illustrations, and worked examples as the larger book, but in a smaller format which focuses on the treatment processes and not on the design of the facilities
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Earth has been used as a building material for centuries, providing local communities with a sustainable and durable material from which homes and other buildings are constructed. Earthen construction has developed over time to become one of the predominant building types worldwide, with many different examples of traditional and modern earth buildings across Africa, Asia, Australia, North America and Europe. This book critically reviews the development and application of earth materials, earth building design and earth construction techniques. The beginning reviews the overall status of earth construction as an option for low-impact and sustainable building design. This coverage is complemented by chapters on earth block building and rammed earth construction, structural reinforcement and internal and external earth building components. The final section reviews regional applications and case studies to highlight the use and utility of modern earthen building construction in different areas and different climates worldwide.
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Article/eBook Full Name: Simple Nonlinear Static Analysis Procedure for Progressive Collapse Evaluation
Author(s): Wenjun Guo and Ramon Gilsanz
Published By: AISC
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Article/eBook Full Name: Progressive Collapse Analyses of 2D Steel Framed Structures with Different Connection Models
Author(s): Lim, Joonhong; Krauthammar, Theodor
Published By: AISC
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