Urban centers are increasingly becoming the locus of enterprise, innovation, and population. This pull toward the center of cities has steadily elevated the importance of these areas. Growth has necessarily spawned new construction. Consequently, modern buildings are often constructed alongside legacy structures, new deep basements are constructed alongside existing shallow foundations, and city blocks composed of a variety of building types result. The underlying soil, foundation, and superstructure of each of these buildings can interact and combine to yield unique seismic responses. Since the seminal work of researchers such as Luco and Contesse (1973) and Wong and Trifunac (1975), researchers have investigated the effects of soil-structure interaction (SSI). This phenomenon refers to the interaction between a single building, its foundation, and the
underlying soil during a seismic event. However, as the trend toward urbanization continues, a shortcoming of this conventional SSI approach is that in reality, a structure will almost certainly be located near other structures in metropolitan areas. In this line of research, the interaction of multiple, adjacent buildings during a seismic event, a phenomenon known as structure-soil-structure interaction (SSSI), is investigated. This topic does not yet command the level of attention given to SSI. However, SSSI has the potential to be significantly detrimental or beneficial, depending on the configuration and dynamic properties of the buildings and their foundations in dense urban environments. It is important to understand SSSI effects so that earthquake engineers can make informed decisions about the design and construction of structures in increasingly dense urban areas.
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we are at first say sorry for about 48 hours down in forum due to major update in forum.
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Article/eBook Full Name: Soil-Machine Interactions: A Finite Element Perspective
Author(s): Jie Shen
Publish Date: March 10, 1998
ISBN: 9780824700812
Published By: CRC Press
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Summary:
Aiming to improve work efficiency in such areas as tillage in agriculture, earth-moving in civil engineering, and tunnel-making in sea-bed operations, this work offers an introduction to Finite Element Method (FEM) analysis of soil-machine systems. It explains the advantage of FEM's numerical approach over traditional analytical and empirical methods of dealing with complex factors from nonlinear mechanical behaviour to geometric configurations.
I've created 3 spreadsheets for the analysis of laterally loaded elastic piles, which I'm sharing:
- Elastic springs;
- Elasto-plastic springs (VBA);
- Elasto-plastic springs (SAP2000 v17 OAPI).
These are totally open source and free. Use them, change them, pass them around if you like. I welcome all feedback for their improvement.
The code is definitely not optimized nor clean as I'm no programmer, but these have already been checked and validated with other published solutions. Nevertheless, be careful when using them and always remember to manual check your solutions.
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β’ Introduction β’ Aesthetic Bridge Design β’ Basic Factors to be Considered in the Conceptual Design β’ Case Analysis of Innovative Ideas in the Conceptual Design β’ Disaster Prevention and Durability of Bridge Structures β’ Bridge Structure System and Key Mechanics Questions β’ Solving New Problem in the Conceptual Design β’ Conceptual Design of Urban Bridge.
In PDF, EPUB, AZW3 format.
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Testing hardened concrete. Determination of secant modulus of elasticity in compression
Descriptors Concretes, Cement and concrete technology, Elasticity, Modulus of elasticity
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