Axial, Lateral and Biaxial Loading Tests and Analyses of Drilled Shafts Embedded in Composite Ground

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Project title

Code/計畫編號

NSC102-2221-E019-028-MY3

Translated Name/計畫中文名

鑽掘樁暨筏基於複合地盤之軸/側向及靜/動態行為研究,-鑽掘樁於複合地盤之軸、側及雙向試樁暨試驗結果之分析

Project Coordinator/計畫主持人

San-Shyan Lin

Funding Organization/主管機關

National Science and Technology Council

Co-Investigator(s)/共同執行人

廖振程

Department/Unit

Department of Harbor and River Engineering

Website

https://www.grb.gov.tw/search/planDetail?id=11265930

Year

2015

Start date/計畫起

01-08-2015

Expected Completion/計畫迄

31-07-2016

Bugetid/研究經費

622千元

ResearchField/研究領域

土木水利工程

"本研究計畫旨在針對鑽掘樁於經地盤改良後複合地盤之軸向、側向及雙向受力之行為加以深入研究。透過鋼筋計及伸縮儀等監測儀器沿樁身之埋設，經軸向、側向以及雙向荷載之全尺寸試樁，期能加載至破壞狀態，再應用申請人所提出利用Cesaro Sum 技巧分析，以更深入了解於不同受力情況下，基樁之承載力、受力-變形行為以及樁周土壤之反力與變形關係式。為分析雙向受力基樁之行為，計畫中亦將申請人原針對側向受力基樁解讀之分析方法擴展為可解讀雙向受力行為之分析模式。此外，有關雙向試樁實驗之配置，申請人既有探討軸向壓力對側向行為影響之經驗亦將於本計畫中延伸探討側向力對基樁軸向行為影響。申請人所提分析方法已成功運用於動態樁載重試驗結果之解讀，計畫中亦可作動態分析，其結果可作為子計畫二及子計畫三之benchmark study 比對之用。本計畫執行過程亦需子計畫一提供各項地盤改良後之物理性質資料及相關參數，另非破壞性檢測結果有助於本子計畫對基樁混凝土參數採用之判斷。""The aim of this proposal is to investigate the axial, lateral and combined loading effects on the behaviors of drilled shafts embedded in gravel improved composite ground. Ultimate performance of the shafts can be obtained through instrumented rebar strain gauges and inclinometers. Detail pile shaft and composite ground interaction can be performed by applying the Cesaro Sum technique, proposed by the proposer. For the purpose to investigate the soil-pile interaction due to combined lateral and axial loading, the method proposed by the proposer will extend to include the axial/lateral loading effects. In addition, the set up for variable axial loading, with lateral loading keeps constant, during loading test is not available yet. It’ll try to design this type of loading test during study period. In addition, the Cesaro sum method has been successfully used for static and dynamic pile loading tests interpretation. In this study, the method will also be used for dynamic analysis to provide as benchmark cases for sub-proposals 2 and 3. The physical properties and their related parameters gained from sub-proposal 1 are needed to improve this study. In addition, the non-destructive testing results will help this study to correctly estimate the concrete properties."

Keyword(s)

樁載重試驗
鑽掘樁
Cesaro Sum 技巧
複合地盤
Pile loading test
drilled shaft
Cesaro sum technique
composite ground

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Axial, Lateral and Biaxial Loading Tests and Analyses of Drilled Shafts Embedded in Composite Ground

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