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地下车库深基坑监测具有结构复杂、监测内容多、信息量大等特点。本文结合某地下车库深基坑工程监测实例,详细探讨了基坑监测方案设计与施测内容,并对各监测项目的数据成果作了分析,得出了有益的结论。 相似文献
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中国东部海区科学钻探CSDP-02井完钻井深2843.18 m。为后续开展相关科研工作,完井后要进行扩孔钻进施工。扩孔前需起拔井内φ114 mm套管,由于套管在井内时间较长,井壁失稳,套管起拔遇卡,无法正常起出。采用水力内割刀工艺,分段割取遇卡套管,提高单次起拔遇卡套管长度,经济、高效地解决了该井套管卡阻事故。本文结合工程实例,对水力内割刀的使用方法及要点进行了阐述。 相似文献
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通过三峡电站永久船闸和上虞—三门高速公路路基抗滑预应力锚索锚固工程实践，从造孔、编索、注浆、预应力张拉等几个方面对预应力锚索锚固技术问题进行探讨． 相似文献
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Nihar Ranjan Patra Prabhakar Jagannath Pise 《Geotechnical and Geological Engineering》2006,24(2):265-282
Experimental investigations on model pile groups of configuration, 1 × 1(single pile), 3 × 1, 2 × 2 for embedment length to
diameter ratio, L/d = 38, were conducted in uniform dry medium dense Ennore sand. The spacing of piles in the groups varied from 3 to 6 pile
diameter. Soil–pile friction angles were δ = 16° and 28°. The pile groups were subjected to oblique pulling loads at angles θ = 0°, 30°, 60° and 90° with the vertical central axis of the groups. The load–displacement response, oblique ultimate pulling
resistances have been qualitatively and quantitatively studied. The inclinations of the load, at which maximum oblique resistance
for the groups were observed, have been reported. Predictions of ultimate resistance of pile groups under uplift, lateral
and oblique pulling loads have been carried out respectively by the methods of Patra and Pise (2002) (Electronic Journal of Geotechnical Engineering, 8, Bundle B), Patra and Pise (2001) (Journal of Geotechnical and Geoenvironmental Engineering ASCE, 127(6), 481–487) and Chattopadhyay and Pise (1986c) (Proceedings of IST East Asian Conference on Struct Engineering and Const., Vol. 1, pp. 1632–1641). A comparison of the measured values of the Writers and others with the predicted values showed
reasonable agreement. 相似文献
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