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題 名 | 卵石及乾砌石牆之物理性質--頭前溪產卵石=The Physical Properties of Cobble and Dry Stone Masonry Wall--Tou-Qian River's Cobble |
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作 者 | 楊朝平; | 書刊名 | 農業工程學報 |
卷 期 | 57:2 2011.06[民100.06] |
頁 次 | 頁87-94 |
分類號 | 443.64 |
關鍵詞 | 生態工法; 卵石; 乾砌石牆; 物理性質; Ecological construction method; Cobble; Dry stone masonry wall; Physical properties; |
語 文 | 中文(Chinese) |
中文摘要 | 台灣地區多天然卵石,而「就地取材」乃是生態工法之大原則。雖然人類使用 卵石已有數千年歷史,但因缺少科學化的研究,致尚欠缺相關於卵石品質要求及砌 石構造物安全性分析上的基本資料,而有待更進一步研究。為此,本研究以新竹縣 頭前溪產之卵石(15 cm<粒徑<74 cm)為樣本,依其粒徑分成數組,量測卵石及乾砌石 牆之物理性質,並以幾何及統計方法觀察之。 研究發現(1)卵石隨著最大徑d1 之增大,愈呈細長狀,但扁平狀漸不顯著;(2) (平 均值±標準差)值域於(d1/d2)數據為1.15~1.81、於(d2/d3)數據為1.09~2.19,d2 及d3 分 別為卵石之中間徑及最小徑;(3)所推導卵石面積及體積計算公式之相關性甚高;(4) 卵石之平均量測單位重為25.04 kN/m3,平均浸水單位重為15.23 kN/m3;(5)乾砌石牆 之平均量測單位重為14.15 kN/m3,理論單位重為13.12 kN/m3,理論浸水單位重為7.98 kN/m3 及(6)乾砌石牆之平均量測孔隙率為0.378、理論孔隙率為0.476。 |
英文摘要 | Taiwan is abundant in natural cobble and one of the principal of the ecological construction method is “full utilization of field materials.” Although, human beings have built masonry structures for thousands years, the scientific study on properties of masonry structures is still scarce. It is necessary to do more research in order to meet the needs of material specification and the safety analysis on masonry structure. Therefore, this study uses the cobbles gathered from Tou-Qian River, Hsinchu County as samples. The sizes of these cobbles range from 15 cm to 75 cm. Depending on their sizes all samples are divided into several groups for measuring the physical properties of the cobble and dry stone masonry wall. Then, those properties are observed by geometrical and statistical methods. The results from this study show that the cobbles become slender and un-platy with increasing the maximum dimension d1. The statistical domains of (mean value ± standard deviation) of (d1/d2) and (d2/d3) for cobbles are range from 1.15 to 1.81 and from 1.09 to 2.19 respectively. The symbol of d2 and d3 are defined as intermediate and minimum cobble dimension respectively. The equations derived by author for estimating the area and volume of cobble are accurate. The mean measured unit weight and mean submerged unit weight of cobbles are 25.04 kN/m3 and 15.23 kN/m3 respectively. The mean measured unit weight, theoretical unit weight and theoretical submerged unit weight of dry stone masonry wall are 14.15 kN/m3, 13.12 kN/m3 and 7.98 kN/m3 respectively. The mean measured porosity and theoretical porosity of dry stone masonry wall are 0.378 and 0.476 respectively. |
本系統中英文摘要資訊取自各篇刊載內容。