HELICAL FOUNDATIONS AND TIEBACKS: QUALITY CONTROL, INSPECTION AND PERFORMANCE MONITORING

机译：螺旋形基础和拉筋：质量控制，检查和性能监控

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The last 25 years have seen rapid expansion in the use of helical screw pile foundations and tiebacks for new and retrofit construction of buildings and earth retention structures. An estimated $100 million was spent in 2002 on helical foundations and tiebacks in the United States alone. While design information is available in the literature, information regarding quality control, inspection and performance monitoring is lacking. Recognition of at least one manufacturer's helical foundation material by the Uniform Building Code, Standard Building Code, and BOCA (all three codes now combined into the ICC International Building Code) has given added urgency to the dissemination of reliable and practical quality control, inspection and performance monitoring procedures. This paper describes a set of such procedures that have been followed for 17 years by engineers experienced in the industry who have directly installed or been involved in the installation of over 140,000 helical foundations and tiebacks in divers soil conditions for various types of structures, including earth retention structures. Topics covered include design responsibility, building code listings and requirements, manufacturer ISO certification, manufacturing process, material and installation specifications, installation contractor certification, field placement, installation procedures, field inspection, building code inspection and performance monitoring. The paper concludes with a step by step example of practical quality control, inspection and performance monitoring procedures on a typical helical foundation project.

机译：在过去的25年中，螺旋形螺旋桩基础和系固装置在建筑物和土方结构的新建和改建中的使用迅速扩展。仅在美国，2002年估计就花费了1亿美元用于螺旋基础和回扣。尽管文献中提供了设计信息，但缺少有关质量控制，检查和性能监控的信息。《统一建筑规范》，《标准建筑规范》和《 BOCA》（现已将这三个规范合并为ICC国际建筑规范）认可了至少一种制造商的螺旋形基础材料，这给传播可靠和实用的质量控制，检查和检验提供了更多的紧迫性。绩效监控程序。本文描述了一套这样的程序，行业内经验丰富的工程师已经遵循了17年，他们直接为各种类型的结构（包括土）在各种土壤条件下直接安装或参与了14万多个螺旋形地基和系杆的安装。保留结构。涵盖的主题包括设计责任，建筑规范清单和要求，制造商ISO认证，制造过程，材料和安装规范，安装承包商认证，现场布置，安装程序，现场检查，建筑规范检查和性能监控。本文以一个典型的螺旋基础项目的实践质量控制，检查和性能监控程序为例，给出了一个分步示例。

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来源
《Deep Foundations Institute 28th Annual Conference on Deep Foundations: Deep Foundations in Compressible Soil and Soft Rock》|2003年|P.271-284|共14页
会议地点 Miami BeachFL(US)
作者
John S. Pack;
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I.M.R., Inc., Wheat Ridge, Colorado, U.S.A.;

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原文格式 PDF
正文语种 eng
中图分类土力学、地基基础工程;
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HELICAL FOUNDATIONS AND TIEBACKS: QUALITY CONTROL, INSPECTION AND PERFORMANCE MONITORING

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