直交集成板斷面性質之數值模擬分析

Numerical Modeling of the Section Properties of Cross Laminated Timber

侯政伯(Cheng-Po Hou) ； 廖硃岑(Chu-Tsen Liao)

《建築學報》 125期 (2023/09) Pp. 1-14

https://doi.org/10.53106/101632122023090125001

摘要

直交集成板（Cross-Laminated Timber），以下簡稱CLT，質量輕約為鋼筋混凝土重量之0.2倍，具有經濟及自然材料循環再生的特性。CLT板材使用在鋼結構高層建築樓板上因現場組裝便利、迅速，更因為自重輕，可以降低各樓層的重量因而減少設計地震力，使梁柱結構尺寸斷面變小，可提升樓層高度之淨高及增加平面使用之面積。世界各地因為地理環境的不同，各國皆有專屬的特有樹種，以日本為例，將CLT產品性能最佳及經濟化，發展出外層為扁柏內層為杉木之CLT產品。為提供結構設計者一種迅速、可靠的應力分析方式，本次研究以驗證之方式探討CLT案例試驗資料與數值模擬分析結果進行兩者斷面性質比較，藉此結果提出當CLT其集成元具不同斷面組合時，可以運用模擬方式求得彎曲彈性係數E，並在不同支承邊界條件、不同載重形式時，提供精準之斷面應力分析。

關鍵字

CLT ； 直交集成材 ； 有限元素法 ； 斷面強度分析

並列摘要

The light weight of the Laminated of Timber, CLT, is about 0.2 times the weight of the concrete. It is also economical and recyclable from natural materials. CLT panel used in high-raise steel buildings, in addition to the convenience and speed of on-site assembly, CLT flooring panel can reduce the weight of each floor due to its light weight, thereby reducing the design seismic force, making the size and cross-section of the beam-column structure smaller, and increasing the net height of the floor height and the usable area indoor. Nowadays, due to the different geographical environments around the world, each country has its own exclusive tree species. In addition, Japan has developed CLT products with the outer layer of cypress and the inner layer of fir for optimizing the performance and economy of CLT products. In order to provide structural designers with a rapid and reliable stress analysis method, this study discusses the CLT test data and numerical simulation results in a verification way to compare the cross-section properties of these two. The results suggest that when CLT has different integrated component sections, the bending elastic coefficient E can be obtained by simulation, and accurate section stress analysis can be provided under different support boundary conditions and different load forms.

並列關鍵字

CLT ； Cross-Laminated Timber ； Finite Element Method ； Cross Section Analysis

參考文獻

中華民國內政部 (2011)。木構造建築物設計及施工技術規範 (pp. 4-7)。中華民國內政部。Ministry of the Interior of Taiwan (2011). Design and Construction Specification of Wood Construction for buildings (pp. 4-7). Taiwan: Ministry of the Interior of Taiwan.

中華民國經濟部標準檢驗局 (2019)。中華民國國家檢驗標準 CNS 直交集成板 (pp. 33-34, 37-38)。中華民國經濟部標準檢驗局。Bureau of Standards (2019). Metrology and Inspection, Taiwan, the National Standards of Republic of China CNS 11641, Taiwan: Bureau of Standards, 33-34, 37-38.

日本建築學會 (2006)。日本建築學會木質構造設計基準‧同解說 (pp. 396、399)。日本：日本建築學會。Architectural Institute of Japan (2006). Japanese Architectural Institute Standard Specification for Wooden Structure (pp. 396, 399). Japan: Architectural Institute of Japan.

日本農林水產省 (2019)。日本農林規格 JAS 3079 直交集成板 (pp. 17, 25-26, 29-30)。日本：日本農林水產省。Ministry of Agriculture, Forestry and Fisheries (2019). Japanese Agricultural Standards JAS 3079, Cross Laminated Timber (pp. 17, 25-26, 29-30). Japan: Ministry of Agriculture, Forestry and Fisheries.

王榮進，蔡孟廷，楊德新，雷明遠，李其忠，詹家旺，趙偉成，汪姮慈 (2020)。直交集成板(CLT)構造防火設計之研究。新北市：內政部建築研究所。Wang, J. C., Meng-Ting Tsai, Te-Hsin Yang, Ming-Yuan Lei, Chi-Chung Li, Chia-Wang Chan, Wei-Cheng Chao, & Heng-Tzu Wang (2020). Research on Fire Protection Design of Cross Laminated Timber (CLT). New Taipei City: Architecture and Building Research Institute, ministry of the Interior.