受周邊多塔樓約束的某地下車庫的抗浮加固處理
賴穎，金國芳
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(同濟(jì)大學(xué)結(jié)構(gòu)工程與防災(zāi)研究所，上海 200092)［摘要］以受周邊多塔樓約束的某地下車庫發(fā)生的上浮事故為工程背景展開調(diào)查分析，總結(jié)出地下車庫上浮的原因，并采用ANSYS軟件對地下車庫進(jìn)行整體建模計算，考慮周邊高層建筑的約束對地下車庫抗浮的有利影響，在模型中把高層建筑與地下車庫連接處按固定端處理。提出了在地下車庫內(nèi)增設(shè)抗拔樁和剪力墻的加固方案，計算結(jié)果顯示，增設(shè)剪力墻后樁基所受上拔力大幅度降低。并對開裂受損的構(gòu)件采用有效的加固措施，加固效果良好。［關(guān)鍵詞］多塔樓；地下車庫；抗??；加固Reinforcement treatment in floating resistance of an underground garage constrained by multi-towers aroundLai Ying, Jin Guofang(Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai 200092, China)Abstract:Investigation and analysis were carried out for the floating upward of an underground garage which constrained by multi-towers around. The reasons for the floating upward of the garage were summed up，and the model of underground garage was calculated by ANSYS finite element software. Considering the favorable effect of peripheral high-rise buildings, the junction between high-rise buildings and underground garage was fixed in the model. The reinforcement scheme which add tension piles and shear walls in the garage was put forward. The calculation results show that the uplift load of the pile greatly reduced after adding shear walls. Reinforcement measures for the cracking structure members were used，and the treatment is effective.Keywords:multi-towers; underground garage; anti-floating; reinforcement作者簡介：賴穎，博士研究生，Email:bee1995@sina.com。參考文獻(xiàn)［1］陳飛銘.地下室上浮破壞及處理措施研究［D］.重慶：重慶大學(xué)，2004.［2］李鏡培，孫文杰.地下結(jié)構(gòu)的浮力計算與抗拔樁設(shè)計方法研究［J］.結(jié)構(gòu)工程師，2007，23(2)：80-84.［3］郝文化.ANSYS土木工程應(yīng)用實例［M］.北京：中國水利水電出版社，2005.［4］GB50002—2002 建筑地基基礎(chǔ)設(shè)計規(guī)范［S］.北京：中國建筑工業(yè)出版社，2002.［5］GB50010—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.［6］呂西林.建筑結(jié)構(gòu)加固設(shè)計［M］.北京：科學(xué)出版社，2001.
