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THE ANALYSIS OF THE DESIGN AND CONSTRUCTION SECURITY OF DEEP FOUNDATION IN PURUI TUNNEL OPEN-CUT SEGMENT
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摘要: 普瑞隧道明洞深基坑K7+914-K7+984段紧邻12层楼房，为了确定深基坑的设计及施工安全，采用了桩锚结构的支护形式，并用理正深基坑5.3计算软件进行本段基坑结构计算，同时采用Midas数值计算软件对本段基坑进行开挖数值模拟，数据结果显示基坑是安全的。对基坑主体结构进行抗浮验算，得出了抗浮值满足规范的要求，基坑不需要进行抗浮设计。Abstract: The K7 + 914 － K7 + 984 segment of deep foundation pit in the Purui Tunnel is adjacent to the 12-layerbuilding，in order to determine the design and construction safety of deep foundation pit，the structure of pile-anchorsupport was used． The 5. 3 calculation software was adopted for the calculation of foundation pit structure，at the sametime the Midas numerical calculation software was also used to simulate excavation of the foundation pit ，the datashows that the foundation pit is safe． It was checked the anti floating computation of the main structure of foundationpit ，the floating resistance value can meet the standard requirements without the need for anti floating design offoundation pit．
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[2] 姜晨光,林新贤,黄家兴.深基坑桩锚支护结构变形监测与初步分析[J].岩土工程界,2002,5(8):55-56. 吴文,徐松林,周劲松,等.深基坑桩锚支护结构受力和变形特性研究[J].岩石力学与工程学报,2001,20(3):399-402. [3] 时伟,刘继明,章伟.深基坑桩锚支护体系水平位移试验研[J].岩石力学与工程学报,2003,22(S1):2355-2358. [4] 邓修甫,白云峰.桩锚支护体系的受力和变形研究[J].焦作工学院学报:自然科学版,2003,22(3):191-193. [5] 李宝平,张玉,李军.桩锚式支护结构的变形特性研究[J].地下空间与工程学报,2007,3(7):1291-1294. [6] 胡贺松.深基坑桩锚支护结构稳定性及受力变形特性研究[D].长沙:中南大学,2009. [7] 李波.桩锚支护体系在北京地铁车站深基坑中的应用[J].市政技术,2008,26(4):348-350. -
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