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48        陳鴻濤  巫漢忠  林恆次 C1/D1及捷運車站聯合開發超高層大樓壁樁前期載重試驗內容與成果探析




              C1/D1及捷運車站聯合開發超高層大樓壁樁前期載重試驗內

                                                  容與成果探析



                                           陳鴻濤   巫漢忠   林恆次                   3
                                                                 2
                                                     1
                                                          摘要
                 台灣桃園國際機場捷運線 A1車站與C1基地56層及D1基地76層聯合開發大樓共構，為提
            供後續聯開大樓深基礎設計所需之參數，規劃於連續壁及壁樁工程中先行進行2組壁樁前期
            載重試驗及1組前期拉拔試驗。
                 本次前期載重試驗主樁尺寸為1.3m x 2.7m x 52m，利用電子式荷重計、電子位移計、鋼
            筋應力計、樁體變位計、自動化測讀設備等儀器，於每階段加載時所規定之時間擷取試驗數
            據資料，配合各儀器所埋設位置，計算每一節樁身分段之軸力傳遞與摩擦力分佈狀況，以及
            每一地層之摩擦應力發揮與變位關係之t-z曲線、承載層反力發揮與變位關係之q-z曲線等成
            果，提供作為進行不同尺寸壁樁承載力與載重－沉陷量關係之回饋分析計算之用。
                 本文將針對2組載重試驗之規劃、儀器配置、數據分析與設計參數整理進行介紹，並以
            C1/D1聯合開發大樓深基礎設計為例，說明壁樁前期載重試驗成果之應用。

            關鍵詞：自動化測讀儀器、軸力與摩擦力分佈、t-z及q-z曲線、回饋分析


            Content and Application of Preliminary Pile Foundation Loading Test on Taiwan
             Taoyuan International Airport Access MRT System A1 Station and C1/D1 Joint
                                               Development Buildings
                               Hong-Tao Chen   Han-Chong Wu   Heng-Tzu Lin                3
                                                                       2
                                                  1
                                                       Abstract
                 Seeing that A1 station of the Taiwan Taoyuan International Airport Access MRT System
            integrates with the joint development buildings on Parcel C1, D1, DORTS planned that two
            preliminary loading tests and one preliminary pulling test will be performed during the construction

            of diaphragm walls and pile engineering in order to provide the design parameter of the tall
            building's deep foundations.
                 The scale of the test pile was 1.3m x 2.7m x 52m. Automatic electronic instruments including
            load cell, Linear Variable Differential Transformer (LVDT), testing pile reinforcing bar stress
            transducer, telltale, etc. were installed and the resulting data measured by computer and data logger
            at indicated times for every step of loading. The load transfer and friction development of pile
            and stratum t-z & q-z curve may be calculated using the data from the instruments. The loading
            test results should be used in back analysis for different scale pile bearing capacity and settlement
            analysis for relevant C1/D1 development building pile foundation.
            Keywords: automatic electric instrument, load transfer, friction, t-z&q-z curve, back analysis




            1. 臺北市政府捷運工程局北區工程處副處長                                 htchen@trts.dorts.gov.tw
            2. 臺北市政府捷運工程局北區工程處正工程司                                hcwu@trts.dorts.gov.tw
            3. 臺灣世曦工程顧問股份有限公司工程師                                  htlin@ceci.com.tw
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