- 摘 要
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（1 大連理工大學(xué)海岸及近海工程國家重點試驗室，大連 116024； 2 福建省金爵房地產(chǎn)開發(fā)有限公司，泉州 362000； 3 中國建筑科學(xué)研究院，北京 100013）
［摘要］利用有限元模型對兩種支護(hù)方案下某工程場地堤岸的抗震性能進(jìn)行了分析。二維有限元模型分析表明，采用雙排樁支護(hù)方案能明顯減小岸邊土體的震陷和滑移，并且減小了支護(hù)樁的內(nèi)力反應(yīng)，達(dá)到了“小震不壞，中震可修”的設(shè)防目標(biāo)。三維模型分析表明，第二排樁的樁距為1.5m時場地的抗震穩(wěn)定性明顯好于3.0m的情況。第二排支護(hù)樁與堤岸墻之間的土體仍會產(chǎn)生震陷，堤岸擋墻隨之向晉江方向滑移，但由于兩排支護(hù)樁形成的圍護(hù)屏障使建筑周圍土體保持穩(wěn)定，保證了高層建筑的結(jié)構(gòu)穩(wěn)定。
［關(guān)鍵詞］抗震設(shè)防目標(biāo)；抗震穩(wěn)定性；震陷；滑移；支護(hù)樁
Analysis on seismic stability of bank in an engineering field
Yue Maoguang1, Lü Zhenli2, Wang Yayong3, Li Hongnan1(1 Dalian University of Technology, Dalian 116024, China; 2 Fujian Jinjue Estate Development Co., Ltd., Quanzhou 362000, China; 3 China Academy of Building Research, Beijing 100013, China)
Abstract:By the use of finite element model, seismic stability of the bank in an engineering field under two support schemes is analyzed. The results indicate that smaller subsidence and slippage will occur to soil near the bank and inner force of supporting piles will be reduced much when the scheme of double supporting piles is adopted. So the seismic fortification level of ‘no damage for frequent earthquakes and repairable for moderate earthquakes′ can be reached. 3D model analysis indicates that seismic stability of engineering field is much better improved when the space of second row piles is 1.5m other than 3.0m. Although seismic subsidence and slippage still occur to retaining wall and soil in double supporting piles scheme, seismic stability of high building and soil around the building can be assured because of the enclosure piles.
Keywords:earthquake fortification level; seismic stability; earthquake subsidence; slippage; supporting pile
基金項目：大型及重要建筑抗震關(guān)鍵技術(shù)研究與示范(20070106110141014)。
作者簡介：岳茂光，博士，Email:ymg2008@126.com。
參考文獻(xiàn)
［1］王繼忠.載體樁技術(shù)的誕生與發(fā)展［J］.建筑結(jié)構(gòu)，2008，38(4)：118-119.
［2］JGJ/T135—2007載體樁設(shè)計規(guī)程［S］.北京：中國建筑工業(yè)出版社，2007.
