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首页> 外文会议>Deep Foundations Institute 28th Annual Conference on Deep Foundations: Deep Foundations in Compressible Soil and Soft Rock >PILED RAFTS IN GEOTECHNICAL PRACTICE - AN INTERNATIONAL PERSPECTIVE
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PILED RAFTS IN GEOTECHNICAL PRACTICE - AN INTERNATIONAL PERSPECTIVE

机译：岩土工程中的木筏-国际视野

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The performance of foundations that combine the high bearing capacity of rafts (mats) with the settlement reduction capability of piles is described through a summary of 24 case histories. Structures included are high-rise commercial office buildings, governmental buildings, industrial facilities and residential buildings, and subsurface conditions range from soft clay to stiff soil overlying rock. Pile types are bored, augered and driven. Since piled rafts are not commonly used in the United States, most of the case histories are from overseas. In all cases the performance of the foundations was monitored during and after construction. Particular emphasis is placed on measured settlements of the piled-raft foundations, distribution of resistance between piles and raft, and general analysis methods that were used by the designers for various geotechnical circumstances. Finally, patterns of behavior are summarized. In most cases, the piles were not designed to mobilize their full capacities under sustained loading of the foundation; therefore, under long-term loading conditions, the piles typically carried more load than the raft. This paper is the result of a study conducted by ITC-18 (Deep Foundations, Willem Van Impe, Chair) of the International Society for Soil Mechanics and Geotechnical Engineering by a subcommittee chaired by the author.
机译：通过总结24个案例的历史来描述将木筏（垫子）的高承载力与桩的沉降减少能力相结合的地基性能。包括的结构包括高层商业办公楼，政府办公楼，工业设施和住宅楼，地下条件范围从软粘土到坚硬的土壤覆岩。钻孔类型为无聊，开凿和打桩。由于堆积木筏在美国并不常用，因此大多数案例历史都来自海外。在所有情况下，在施工期间和施工后均会监测基础的性能。特别强调的是桩筏基础的测量沉降，桩与筏之间的阻力分布以及设计人员在各种岩土环境中使用的常规分析方法。最后，总结了行为模式。在大多数情况下，桩的设计并不是为了在持续承受地基荷载的情况下调动桩的全部承载力；因此，在长期的负载条件下，桩的承载力通常要比木筏高。本文是由国际土壤力学与岩土工程学会ITC-18（深层基金会，主持人Willem Van Impe，主席）由作者主持的小组委员会进行研究的结果。

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