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عنوان فارسی مقاله:
روش های طراحی بهینه برای بنیاد ستون در لندن
عنوان انگلیسی مقاله:
Optimum design methodologies for pile foundations in London
سال انتشار : 2014
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مقدمه انگلیسی مقاله:
1. Introduction
Pile-supported structures are known to have existed in pre-historic times, references to cedar timber piles in Babylon can be found in the Bible. In the Middle Ages, pile foundations supported a wide assortment of structures particularly in Venice and in the Netherlands. Piled foundations are a convenient method for supporting structures built over water or where uplift loads must be resisted. Inclined or raking piles have been also used to resist lateral forces. Piles supporting retaining walls, bridge piers and abutments and machinery foundations resist both vertical and horizontal loads. The main types of piles used are driven piles, driven and cast-in-place piles, jacked piles, bored and cast-in-place piles and composite piles [1]. The first three of the above types are also called displacement piles since the soil is displaced as the pile is driven or jacked into the ground. In the case of bored piles, and in some forms of composite piles, the soil is first removed by boring a hole where concrete is placed or various types of precast concrete or other proprietary units are inserted. Following the decision that piling is necessary, the engineer must make a choice from variety of types and sizes. Usually, there is only one type of pile which is satisfactory for a particular site condition [2]. In this work bearing piles will be examined although any type of piles may also be considered in the proposed formulation. Bearing piles are required when the soil at normal foundation level cannot support ordinary pad, strip, or raft foundations or where structures are sited on deep filling which is compressible and settling under its own weight. The foundation cost, of real-world structural systems, can vary from 5% to 20% of the construction cost of the superstructure while the number of piles required might exceed several hundreds or even thousands. In the first part of this study the modelling of the soil-pile structure interaction using the finite element method is described while in the second part a formulation of an optimization problem is proposed, aiming at achieving the most economical-optimized design of the pilefoundation layout. Two different design procedures are adopted and are incorporated in the optimization procedure: the German foundation code DIN 4014 [3] and the Eurocode 7 (EC7) [4] design procedures. Due to the nature of the problem, a mesh generator is used in order to create automatically the finite element mesh both for pile members and soil. Two real-world structures are considered for assessing the proposed formulation. In particular, the 16-storey and the 31-storey (Hiscocks House at Stonebridge Park and Hyde Park Cavalry Barracks both in London, UK) buildings are used as benchmark tests, for the comparative study and a significant reduction of the pile foundation cost is achieved. Although, the proposed framework is used for the design of building structures, it can also be applied with proper modifications implementing the requirements and specifications imposed for other type of structures (such as nuclear power stations, bridges etc.).
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کلمات کلیدی:
Piling Techniques | Tritech Ltd | Different Piling Methods https://www.aeyates.co.uk/tritech-piling-and-foundations-ltd/about/piling-techniques Each has its advantages and disadvantages but we at Tritech Piling and Foundations Ltd. can find the right solution for your piling needs. Not all piling jobs are ... People also ask What is piling work in construction? What is the use of pile foundation? What is piling in civil engineering? What are driven piles used for? Feedback Pile Foundation | Classification of Pile Foundations | Pile Installation ... civildigital.com/pile-foundation-classification-of-pile-foundations-pile-installation-me... Jump to Pile Installation Methods - In pile foundations, Installation process and methods of installation are equally important as the design process ... Construction Updates: PILE FOUNDATIONS https://constructionduniya.blogspot.com/2012/02/pile-foundations.html Feb 20, 2012 - pile foundations. Piles can also be used in normal ground conditions to resist horizontal loads. Piles are a convenient method of foundation for ... Pile Foundations - SlideShare https://www.slideshare.net/ved_ram/pile-foundations Mar 6, 2010 - What is meant by load carrying capacity of the pile foundation? ..... Schematics of Pile foundations based on method of construction 04/03/2009 ... Pile Installation Method | Industry Resources | Groundforce https://www.vpgroundforce.com/gb/footer-links/useful.../pile-installation-method/ Piles are most commonly used to support and strengthen foundations. They function as both a lateral load support and as a type of supporting wall, being able to ... Searches related to methodologies for pile foundations pile foundation construction procedure pdf types of piling methods piling work procedure pile foundation construction methods pile foundation types and installation procedures pile boring methods piling techniques pdf piling procedure