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（山東同圓設(shè)計(jì)集團(tuán)有限公司， 濟(jì)南 250101）

［摘要］青島萬達(dá)東方影都酒店群位于青島西海岸人工填海區(qū)，場地為近期采用厚度約11～16m的開山石改造回填后場地，局部有約16m厚淤泥包露出地面，下伏基巖為連續(xù)、穩(wěn)定的沉積巖。針對(duì)新填場地固結(jié)沉降大，會(huì)對(duì)樁基產(chǎn)生較大的負(fù)摩阻力的特點(diǎn)，按建筑功能分區(qū)域采用不同夯擊能進(jìn)行地基處理；針對(duì)開山石及厚淤泥包場區(qū)成孔困難、易塌孔等特點(diǎn)，采用沖孔灌注樁，并采取可靠施工措施，采用后注漿技術(shù)提高承載力；在樁內(nèi)鋼筋上埋設(shè)鋼筋應(yīng)變計(jì)用于檢驗(yàn)樁的承載力，保證樁基安全；對(duì)樁基的抗腐蝕做了專題研究；針對(duì)后期使用過程中場地沉降導(dǎo)致管線及道路的破壞，采取了有效處理措施。

［關(guān)鍵詞］人工填海區(qū)； 淤泥包； 地基處理； 鋼筋應(yīng)變計(jì)； 樁基抗腐蝕； 管線沉降

中圖分類號(hào)：TU473-1文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2016)24-0061-05

Pile foundation design of coastal site with thick hillstone backfill

Hou Shuli， Jiang Shilin， Li Wenming， Zang Chuanbo

（Shandong Tongyuan Design Group Co., Ltd., Jinan 250101,  China）

Abstract:Qingdao Wanda Oriental Cinema Hotel Group locates at artificial reclamation area of Qingdao west coast, where it is reconstructed and backfilled ground with 11～16m thick hillstones recently. There are about 16m thick outcrop sludge package partially. The subterrane is continuous stable sedimentary rocks. The consolidation settlement of newly reclaimed land was large and it produced big negative friction to pile foundation, so foundation treatment was carried out adopting different tamping energies according to different building function areas. It was difficult to form pores in hillstones and thick sludge package area and holes were easy to collapse in these areas, so impact-cone concrete pile was used, reliable construction measure were and post grouting technology was adopted to improve its bearing capacity. In order to accurately calculate the bearing capacity of test pile and guarantee safety of pile foundation, rebar strain meter was embedded on rebar in piles. A special study on corrosion resistance of pile foundation was conducted. Effective measures were taken for damages to pile lines and roads due to ground sedimentation.

Keywords:artificial reclamation; sludge package; ground treatment; rebar strain meter; corrosion resistance of pile foundation; pipeline sedimentation

作者簡介：侯書利，碩士，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email:410141483@qq.com。