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1 大連理工大學(xué)土木水利學(xué)院，116024;
2 大連理工大學(xué)海岸和近海工程國家重點(diǎn)實(shí)驗(yàn)室，116024;
1)大連理工大學(xué)土木水利學(xué)院，116024;
2)大連理工大學(xué)海岸和近海工程國家重點(diǎn)實(shí)驗(yàn)室，116024;
3)大連港務(wù)集團(tuán)公司，116001。
【提要】 結(jié)合大連港大窯灣吹填區(qū)軟土地基處理具體工程，通過現(xiàn)場試驗(yàn)與監(jiān)測比較詳細(xì)地介紹了堆載預(yù)壓方法中關(guān)于分級(jí)堆載設(shè)計(jì)、施工及監(jiān)測等各方面的技術(shù)問題。通過對(duì)監(jiān)測結(jié)果的綜合分析，探討了堆載預(yù)壓處理過程中地表沉降、深層沉降等關(guān)鍵參數(shù)的變化規(guī)律及堆載級(jí)數(shù)、堆載高度與固結(jié)時(shí)間等參數(shù)之間的依賴關(guān)系，為吹填造陸地區(qū)軟基處理提供了經(jīng)驗(yàn)和依據(jù)。
【關(guān)鍵詞】 軟土地基 堆載預(yù)壓 地表沉降 深層沉降 固結(jié) 分級(jí)加載
Study on Preloading Technique for Treatment of Hydraulic Reclamation of Dayaowan Port Area of Dalian/Luan Maotian1,2,Wu Yajun1,Yang Qing1,2,Liu Xiangdong3, Xu Jian 3,Yang Xinhui2
(1 School of Civil and Hydraulic Eng.,Dalian Univ. of Technology, Dalian 116024, China; 2 State Key Laboratory of Coastal and Offshore Eng., Dalian Univ. of Technology, Dalian 116024, China; 3 Dalian Group Company of Port and Harbour, Dalian 116001,China)
Abstract:A case study of applying the preloading technique to treat  hydraulic reclamation of Dayaowan Port area of Dalian is reported. The technical problems related to the stepped loading design, construction and monitoring are discussed. Through the  analysis on the monitored data, variations of ground settlement and deep settlement with time are displayed and the interrelation among the step of preloading, the height of preloading and consolidation time are examined.
Keywords:soft soils; preloading; ground settlement;deep settlement; consolidation; step loading