The Geology of South Florida With Emphasis on Deep Foundations

机译：南佛罗里达州的地质重视深层基础

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This paper briefly discusses the geologic conditions in South Florida relative to the design, construction, and performance of deep foundations. The subsurface conditions in this area are unique in that the rock layers are highly porous and often very soft, and are sandwiched between layers of typically loose, uncemented quartz fine sands. Due to the high porosity of the Miami Limestone, 4-inch diameter rock coring is often required to obtain intact samples, and dewatering of excavations is sometimes difficult or impossible. The sand layers, typically tens of feet thick, are very loose to loose in relative density and have been the cause of unexpected large, deep foundation settlements. The engineering properties of the various geologic formations are discussed, along with typical deep foundation types used in the Miami area prior to and after 1980.

机译：本文简要介绍了南佛罗里达州的地质条件，相对于深层基础的设计，施工和性能。该区域的地下条件是独特的，因为岩层是高度多孔的并且通常非常柔软，并且夹在通常松动的层之间，未解压缩的石英细砂层之间。由于迈阿密石灰石的高孔隙率，通常需要4英寸直径的岩石芯，以获得完整的样品，并且有时难以或不可能脱水。砂层，通常厚的几十英尺厚，以相对密度松散地松动，并且是意外的大，深层沉降的原因。讨论了各种地质形成的工程性质，以及1980年之前和之后的迈阿密地区使用的典型深基础类型。

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《Deep Foundations Institute Annual Conference on Deep Foundations: Deep Foundations in Compressible Soil and Soft Rock》|2003年||共16页
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Edwin W. Mickey; Kirk A. Mclntosh;
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中图分类土力学、地基基础工程;
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The Geology of South Florida With Emphasis on Deep Foundations

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