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首页> 外文会议>Great Lakes Geotechnical and Geoenvironmental Conference; 20050513; Milwaukee,WI(US) >THE USE OF IN-SITU TESTING TO OPTIMIZE RETAINING WALL DESIGN IN THE MARQUETTE INTERCHANGE PROJECT
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THE USE OF IN-SITU TESTING TO OPTIMIZE RETAINING WALL DESIGN IN THE MARQUETTE INTERCHANGE PROJECT

机译：在Marquette互换项目中使用原位测试优化挡土墙设计

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摘要

This paper presents the practical use of in-situ testing to optimize retaining wall design of the $810 Million Marquette Interchange Project in Milwaukee, Wisconsin. Approximately 42 retaining walls will be constructed between 2004 and 2008, of which the majority are cut walls up to 12.2-meter (40-foot) high. The in-situ testing performed for this project supplemented a conventional geotechnical investigation and included pressuremeter tests, dilatometer tests, and piezometric cone penetration tests with soil electrical conductivity measurements. Pressuremeter and dilatometer test results were used to develop categorized p-y curves in modeling passive soil resistance and to estimate undrained shear strengths and anchor bond strengths of clayey soils. Sounding results from cone penetration tests with soil electrical conductivity measurements were used to evaluate the groundwater conditions, estimate the in-situ soil properties, and perform direct settlement analyses of fill walls on soft ground conditions. In-situ testing results were compared with soil parameters developed from Standard Penetration Tests and laboratory tests. Results were also validated from three full-scale lateral pile load tests conducted during the design phase and from anchor load tests conducted as part of construction quality control/quality assurance. This paper illustrates how the in-situ testing results were incorporated to optimize the retaining wall design and reduce overall construction costs.
机译：本文介绍了现场测试的实际应用，以优化威斯康星州密尔沃基市耗资8.1亿美元的Marquette立交项目的挡土墙设计。在2004年至2008年之间，将建造约42处挡土墙，其中大部分是高达12.2米（40英尺）的切面。为该项目进行的现场测试补充了传统的岩土研究，包括压力计测试，膨胀计测试以及带土壤电导率测量的测压锥渗透测试。压力计和膨胀计的测试结果用于建立被动土抗性建模的p-y曲线，并估计黏性土的不排水抗剪强度和锚固强度。圆锥渗透测试的测深结果与土壤电导率测量值一起用于评估地下水条件，估算原位土壤特性并在软土地条件下进行填充墙的直接沉降分析。将原位测试结果与标准渗透测试和实验室测试得出的土壤参数进行了比较。在设计阶段进行的三项全尺寸侧向桩载荷试验以及作为施工质量控制/质量保证一部分的锚固载荷试验也对结果进行了验证。本文说明了如何结合现场测试结果来优化挡土墙设计并降低总体施工成本。

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