西安地鐵330kV地下變電站結(jié)構(gòu)設(shè)計及施工方法研究
文波1，牛荻濤1，韓永興2
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文波1，牛荻濤1，韓永興2（1 西安建筑科技大學土木工程學院， 西安 710055； 2 陜西省電力設(shè)計院， 西安 710054）［摘要］西安地鐵配套用的330kV地下變電站是西北地區(qū)首座高電壓等級地下變電站，設(shè)計為全地下的3層混凝土現(xiàn)澆框架剪力墻結(jié)構(gòu)，基礎(chǔ)采用鋼筋混凝土筏板基礎(chǔ)，結(jié)構(gòu)主體外圍采用鉆孔灌注樁支護。該地下變電站由于電氣工藝的特殊要求，樓板開洞較多，平面不規(guī)則，因此設(shè)計中采用三維有限元方法進行混凝土結(jié)構(gòu)設(shè)計，并與采用層模型的計算結(jié)果進行對比分析。由于工程主體外圍存在圍護結(jié)構(gòu)，土側(cè)壓力對結(jié)構(gòu)的作用形式發(fā)生改變，常規(guī)土側(cè)壓力計算方法已不再適用，需采用改進土側(cè)壓力系數(shù)的方法進行分析計算，計算分析結(jié)果表明，該方法是可行的。最后對本工程在施工中的若干問題給出了相應的處理方法。本工程的順利實施可以為西安地鐵建設(shè)提供電力保障，還可為同類地下變電站及相似地下工程的混凝土設(shè)計及施工方案的優(yōu)化提供參考。［關(guān)鍵詞］地下變電站； 結(jié)構(gòu)設(shè)計； 有限元分析； 護壁樁； 施工工藝中圖分類號：TU354，TU7453文獻標識碼：A文章編號：1002848X(2013)07006504Study on structural design and construction of 330kV underground substation in Xi′an metroWen Bo1, Niu Ditao1, Han Yongxing2(1 Xi′an University of Architecture & Technology, Xi′an 710055, China;2 Shaanxi Electric Power Design Institute, Xi′an 710054, China)Abstract:The 330kV underground substation for Xi′an metro is the first highvoltage underground substation in northwest of China, which is designed for threelayer concrete frameshear wall, raft foundation and bored pile around the structure. Because of the electric technology needing, there are many holes in floor and the structure style becomes abnormity, so threedimension finite element model was used to analyze the characteristic of structure and the results were compared with those of layer model. The type of soil lateral pressure is changed due to round protective pile, while the traditional soil pressure method is not applicable. The improvement soil lateral pressure coefficient method was proposed to calculate the structure and confirmed correctly by the results. Some effective ways were given in construction, which can provide guidelines for the design and construction in similar engineering practice.Keywords:underground substation; structural design; finite element analysis; protective pile; construction technology*國家自然科學基金項目資助（51008246）。作者簡介：文波，博士，副教授，Email:wenbo_mail@163.com。參考文獻［1］GB 50011—2010 建筑抗震設(shè)計規(guī)范［S］. 北京：中國建筑工業(yè)出版社，2010［2］GB 50010—2002 混凝土結(jié)構(gòu)設(shè)計規(guī)范［S］. 北京：中國建筑工業(yè)出版社，2002.［3］SAP2000中文版使用指南［M］.北京:人民交通出版社，2007.［4］（蘇）A.C.格赫曼，（蘇）X.X.扎伊涅特季諾夫. 管道的抗震設(shè)計施工與監(jiān)護［M］. 劉昆，張宗理，譯. 北京：地震出版社，1992.［5］TAKASHI MATSUDA.A study on damage of underground subway structures during the 1995 Hyogoken Nanbu Earthquake［R］. Geotechnical Engineering in Recovery from Urban Earthquake Disaster, Kigforum, 1997.［6］楊春田.日本阪神地震地鐵工程的震害分析［J］.工程抗震，1996,6(2):4042.
