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Risk Management of Bored Piling Construction on Sandy Soils with Real-Time Cost Control

机译：实时成本控制含沙土钻孔桩施工风险管理

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In a global society, in which geotechnical projects are increasingly designed in a country other than the one where construction takes place, geotechnical risk management must be extended to cover infrastructure works, which are smaller than dams and tunnels, for example, since there is a significant impact on works budget imponderables. Therefore, a risk management methodology based on the likelihood of the occurrence of certain events and their economic consequences is proposed, which is applicable to bored piles (Kelly drilled) in coarse soils, easy to use, and simple to implement since the initial stage of construction. Of 12 case studies of construction works involving bored piles (Kelly drilled) carried out in Luanda (Angola), two selected examples involving the proposed risk methodology on sandy soil layers with interbedded clays are discussed. Subsequently, whether the overall foundation contract budget is affected by assessed risk is determined, and what influence it has on the budget in the light of mitigating factors and associated real costs. This method intended to encourage the adaptation of sustainable risk management in bored piles construction by the site project managers, involving risk analysis concurrently with budgetary review. Though the level of assessed technical risk may be acceptable, overall costs associated with the contract in question may not be acceptable.
机译：在全球社会中，其中岩土工程越来越多地设计在一个建设发生的国家之外，必须扩展岩土风险管理，以涵盖基础设施的作品，例如，距离大坝和隧道小于水坝和隧道对工程预算不对劲的重大影响。因此，提出了一种基于某些事件发生的可能性及其经济后果的风险管理方法，这适用于粗糙的土壤中的无聊桩（凯利钻），易于使用，并且自最初阶段以来易于实施。建造。讨论了罗安达（安哥拉）开展的乏味桩（Kelly Direcled）的建筑工程的12例，讨论了涉及涉及粘土的砂土层的拟议风险方法的选定实例。随后，确定总体基金会合同预算是否受评估风险的影响，并根据减轻因素和相关的实际成本对预算有所影响。这种方法旨在鼓励本站项目经理对无聊桩建设的可持续风险管理，涉及预算审查的风险分析。虽然评估的技术风险水平可能是可接受的，但与有关合同相关的总体成本可能不可接受。

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