超大深基坑工程关键施工技术的研究

南京同曦国际广场超大深基坑工程,通过采用"钻孔灌注桩+桩间钢管土钉"和"自然放坡+挂网喷浆混凝土"组合支护形式,实现了超大平面无内支撑施工。详细介绍了该工程所采用的关键技术,包括桩间土钉施工技术、旋喷桩施工技术、挂网喷浆放坡支护技术、降水施工技术。在施工过程中,还采用了先进的监测技术及信息化技术,确保基坑施工处于受控状态。

Research on Key Construction Technology of Large Deep Foundation Pit Project

Nanjing Tongxi international plaza with large deep foundation pit engineering, by using ＂the cast-in-place pile soil nailing ＋ steel pipes soil nails between piles ＂and＂ natural slope ＋ hang put slurry-spraying concrete＂ combined bolting net form, large plane without internal support construction. Detailed introduces the key technology used in engineering, including between pile soil nailing construction technology, jet grouting pile construction technology, technical support, spray put slope precipitation construc- tion technology. In the construction process, also adopted the advanced technology and information technology, the monitoring of ensuring foundation pit construction under control.