龍溪塔整體平移過(guò)程中新型防傾覆系統(tǒng)分析*
商冬凡1,2，王鐵成1，楊志鋒3，盧明3
- 摘 要
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（1天津大學(xué)建筑工程學(xué)院， 天津 300072； 2 河北省建筑科學(xué)研究院， 石家莊 050021；3 河北建研科技有限公司， 石家莊 050021）
［摘要］龍溪塔為七層六邊形磚木混合結(jié)構(gòu)，因其西側(cè)水陽(yáng)江需拓寬治理，決定將其向東北方向平移129m進(jìn)行保護(hù)，對(duì)平移過(guò)程中采用的由下部鋼筋混凝土保護(hù)筒和上部鋼結(jié)構(gòu)主動(dòng)施力支撐組成的新型防傾覆系統(tǒng)設(shè)計(jì)進(jìn)行詳細(xì)介紹，并采用ANSYS軟件進(jìn)行有限元分析。結(jié)果表明，增設(shè)防傾覆系統(tǒng)后，在總重僅增加10%的情況下，抗傾覆安全系數(shù)K提高3.0倍，主體結(jié)構(gòu)頂點(diǎn)位移下降54%，避免了塔身拉應(yīng)力破壞；新型防傾覆系統(tǒng)與塔體采用可拆除柔性連接，既能保證塔體移位過(guò)程安全，又能保留塔體原有歷史外觀，其成果適用于古塔等高聳建筑的平移工程。［關(guān)鍵詞］古塔; 整體平移; 鋼結(jié)構(gòu)主動(dòng)施力支撐; 鋼筋混凝土保護(hù)筒; 傾覆中圖分類號(hào)：TU318 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2016)05-0097-05
Analysis on a new overturnpreventing system in the monolithic movement process of Longxi PagodaShang Dongfan1,2, Wang Tiecheng1, Yang Zhifeng3, Lu Ming3(1 School of Civil Engineering, Tianjin University, Tianjin 300072,China; 2 Hebei Academy of Building Research, Shijiazhuang 050021, China; 3 Hebei Building Research Technology Co.,Ltd., Shijiazhuang 050021, China)Abstract:Longxi Pagoda is a seven-story hexagonal brick and wood composite structure. Because of the need to broaden the Shuiyang river located on the west side of Longxi Pagoda, it needs to move the pagoda of 129m in northeast direction for protection. A detailed introduction was conducted of a new overturn-preventing system during monolithic movement process. The system was composed of bottom reinforced concrete protective tube and top initiative steel structure support. ANSYS software was used to conduct finite element analysis. The results show that after the addition of the overturn-preventing system, the overturn-preventing safety factor K is increased by 3.0 times and the displacement of the vertex is decreased by 54% with only 10% increase in the total weight, avoiding the tensile stress destruction of the pagoda. The removed flexible connection between the pagoda and the new overturn-preventing system can ensure the security during the movement process and preserve the original historical appearance of the pagoda. The results can be applied to movement projects of high-rise buildings such as ancient pagodas.Keywords:ancient pagoda; monolithic movement; initiative steel structure support; reinforced concrete protective tube; overturn
*河北省科技計(jì)劃項(xiàng)目（13255801D）。作者簡(jiǎn)介：商冬凡，博士研究生，正高級(jí)工程師，副總工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email:13933178581@163.com。
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