宝钢厚板厂新建2^#和3^#热处理线工程基础施工难点及对策  

Construction Nodus in Baosteel Heavy Plate Mill's New Heat Treatment Lines 2 and 3 and Countermeasures

作　　者：王军[1] 陈玉[2] 

机构地区：[1]宝钢股份公司,上海201900 [2]中冶天工上海十三冶建设有限公司,上海200941

出　　处：《宝钢技术》2007年第3期41-43,73,共4页Baosteel Technology

摘　　要：针对宝钢厚板厂新建2^#和3^#热处理线工程工期短、施工场地狭长、周边生产设施多、新建设备基础埋深较深,并与周边生产设施紧邻等特点,结合宝钢地区的地质条件,系统阐述如何运用砂桩、钻孔沉桩、旋喷桩内插H型钢、坑内坑底旋喷注浆加固、搅拌桩重力挡土墙支护等施工技术,最大限度地消除桩基沉桩施工和设备基础深基坑施工过程中对周边建（构）物的影响.同时,运用监测手段对周边建（构）物的位移及沉降进行监控,并根据监测结果动态地调整施工节奏和及时采取预防措施.Baosteel Heavy Plate Mill＇ s new project ＂Heat Treatment Lines 2 and 3＂ has encountered some difficuhies, such as ＂short time limit, long and narrow construction site, excessive establishments around the site and deeper foundation for production facilities. In combination with the geologic conditions in Baosteel area, the following construction technologies are described systematically, such as grit well, bored piling, inserting H-beam in rotory spraying piles, spinning-jet ＆ grouting in and at the pit, deep mixing pile, gravity retaining wall and timbering, which eliminate the effect of the sinking pile and equipment foundation construction on buildings close to the site. At the same time, some monitoring instruments are used to monitor the displacement and settlement of these buildings. The construction rhythm can be adjusted based on the inpection results, and preventive measures can be taken in time.

关 键 词：砂井 预钻孔沉桩 支护 

分 类 号：TG162.8[金属学及工艺—热处理]