本研究所探討的高雄港聯外道路高架橋之預鑄節塊墩柱為一創新技術工程，為了能深入探討預鑄節塊墩柱之變形行為，本研究於該工程新生路北段第四單元(U4)預鑄墩柱節塊埋設應變計，藉此監測混凝土的變形，並與現有的預測式比較，評估墩柱內有效預力狀況。
墩柱軸向應變在經歷收縮、施預力、潛變及鋼絞線之鬆馳已達穩定狀態，施加預力階段所增加的彈性應變為224 × 10-6 ~ 250 × 10-6 。於施加預力800天後的應變改變量為325 × 10-6~ 504 × 10-6，預力損失為1057~1413 kgf/cm2，約為初始預力的7.4~9.8%，均在設計容許值以內。因墩柱應變已趨近穩定狀態，後續改變主要為溫度效應之影響。墩柱因受到季節性的大氣溫度變化而產生應變改變量，約為79 × 10-6~ 99 × 10-6的應變改變量。因日夜溫差與直接日照照射所造成的影響約為季節性的大氣溫度變化的一半，為35 × 10-6~ 45 × 10-6的應變改變量。

The precast prestressed segmental pier column of Kaohsiung Port Viaduct this thesis studying for is an Innovative Technology Engineering. For investigate the deformation behavior of the precast prestressed segmental pier column, we embedded eight strain gauges at each of the segmental pier column in 5-span unit, monitor the deformation of the concrete and compared with prognosticated. Evaluate the effective prestress of the segmental pier column.
The deformation of the pier column after shrinkage、prestressing、creep of concrete and relaxation of prestressing steel is almost stable. The deformation of the concrete at prestressing had generated 224 × 10-6 ~ 250 × 10-6 elastic strain, and generated
325 × 10-6~ 504 × 10-6 concrete strain, which is 1057~1413 kgf/cm2 external prestress losses, accounting for 7.4%~9.8% of the initial pretress within 800 days after prestressing. Due to the deformation of the pier column is almost stable, thermal deformation is the main affect for the change of the deformation. The average temperature change between winter and summer form a deformation of the concrete, which is 79 × 10-6 ~ 99 × 10-6 concrete strain. Also, the sunshine and the average temperature change day and night form a deformation of the concrete, which is 35 × 10-6 ~ 45 × 10-6 concrete strain.

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