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題名 | 半剛性構架之深開挖型鋼支撐系統穩定分析=Stability Analysis of Retaining Struts with Semi-Rigid Connections |
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作者姓名(中文) | 蔡錦松; 周立德; | 書刊名 | 中國土木水利工程學刊 |
卷期 | 10:2 1998.06[民87.06] |
頁次 | 頁223-231 |
分類號 | 441.13 |
關鍵詞 | 支撐; 半剛性接頭; 穩定分析; Strut; Semi-rigid connection; Stability analysis; |
語文 | 中文(Chinese) |
中文摘要 | 本文探討具半剛性接合之深開挖支撐系統穩定性。主要應用半剛接理論,由線彈 性位移彈簧及抗彎彈簧模擬支撐U型扣件與千斤頂接合兩種半剛性接合構架行為。內容包含 三等跨彈性支承連續梁分析,藉以瞭解半剛性接合之支撐在軸壓力作用下之挫屈強度與影響 分析。結果顯示,除位移彈簧與抗彎彈簧勁度大小對挫屈強度有影響外,抗彎彈簧之組裝位 置對挫屈強度影響更為明顯。結論指出,實際工程中,型鋼內支撐欲獲得較高之挫屈強度, 支撐與千斤頂接合(抗彎彈簧)位置,應避免設置各跨中央處為原則,最好接近連續壁圍令支 承處或中間柱三角托架與U型扣件所提供之側撐處。 |
英文摘要 | This paper presents a stability analysis to struts with semi-rigid connections commonly used in the retaining system of deep excavation works. Based on semi-rigid connection theory, the U-bolts and oil-pump jacks that connect strut members in the retaining system are modeled as linear translational springs and rotational springs. Three-span continuous beams with elastic supports are used to model the behavior of struts subjected to axial load. Analytical results indicate that the U-bolt and jack can influence significantly the buckling resistance of retaining struts, and the location of the jack, which is modeled as the rotational spring in the analysis, has even greater influence. This study concludes that the oil-pump jack should be placed adjacent to vertical supports or retaining walls to obtain good buckling resistance, and the jack should not be placed near the center of each span. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。