在本次試驗中，我們研究國產直交集成板（Cross-Laminated Timber，CLT）之抗彎強度及在建築構造上之性能分析，透過膠合及分等，也有效控制CLT之品質並減少變異性。除此之外，依據樹種選擇、品質要求以及規格尺寸、價格等，來更有效使用直交集成板材積之適用範圍。本研究使用（Taiwania, Taiwania cryptomerioides）及柳杉（Japanese Cedar, Cryptomeria japonica）等2種不同的國產木材於CLT應用，膠合製成5層5單片的同等級和異等級之CLT。透過弱軸層和強軸層方向之強度設計以及四點抗彎試驗，求得之CLT直交集成板材載重、位移與變形剛性值，利用計算分析載重變形關係，進而進行等值EI和試驗及理論剛性數值分析比較，來驗證與探討分等膠合後的CLT交集成板材之樹種性質、集成元、破壞強度等。初步研究分析結果為:可知柳杉抗彎強度大於台灣杉；集成元之寬度較寬者於抗彎強度有較佳之表現；在弱軸方向之集成元及側拼接合對於整體抗彎勁度的影響較小；有無防腐處理之CLT板材在建築之成本上係佔為考量因素。

In this research, we investigate the bending strength of domestic Cross-Laminated Timber (CLT) and its compatibility to all types of building structures, also demonstrate how to control CLT’s quality and reduce its variation, by using gluing technique and applying lamina mechanical testing to sort its level. additionally, provide the knowledge of how quality of wood, wood measurement, wood selection and pricing effect the applicability of CLT. To begin with the experiment, Taiwania and Japanese Cedar are two main types of woods we will be examine for their applicability in CLT forms. Both woods are sliced and glued into 5-layer-5ply homogeneous and heterogeneous grade CLT. After the preparation, we start the examination of major and minor strength direction’s strength design, and the four-point bending test method, in the end calculate the weight, displacement and deformation stiffness value of CLT. Using the calculated result to analyze the load-deformation relationship of CLT, then further proceed to equivalent EI experiment and comparative analysis of theoretical stiffness numerical value, to discover and validate graded CLT’s characteristic, integrated element and breaking strength. In conclusion, all the experiments have confirmed following information: Japanese Cedar has stronger bending strength than Taiwania； Thicker lamina has better bending strength capacity； Lamina in minor strength direction and splice joint method have low effect to overall bending strength； CTL with or without anticorrosion treatment can affect the total budget cost of construction.

中文文獻
[C1]CNS 16114直交集成板,經濟部標準檢驗局ֽ,2019。
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日文文獻
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網路資料
國家林產技術平台:
https://www.cwcba-wqac.org.tw/forest-tech/index.php?action=resources-detail&id=67
我們的島
https://ourisland.pts.org.tw/content/7744