盾构隧道管片表面气泡试验研究  

Experimental Study on Air Bubbles on the Surface of Shield Tunnel Segments

作　　者：赵杨 吴嘉彬 ZHAO Yang;WU Jiabin(Jiangsu Construction Engineering Quality Testing Center Co.,Ltd.,Nanjing Jiangsu 210000,China;Nantong Rail Transit Group Co.,Ltd.,Nantong Jiangsu 226000,China)

机构地区：[1]江苏省建筑工程质量检测中心有限公司,江苏南京210000 [2]南通轨道交通集团有限公司,江苏南通226000

出　　处：《江苏建筑》2024年第6期80-82,100,共4页Jiangsu Construction

摘　　要：盾构施工的重要环节之一就是管片的生产,而气泡是管片生产中常常出现的质量问题。气泡的出现不仅会降低管片的强度和使用寿命,对盾构工程的安全、经济、环保等方面都会产生不良影响。因此,研究盾构管片生产中气泡的防治,具有现实意义和重要价值。文章依托南通在建地铁工程,通过对混凝土原材料、配合比以及生产过程的试验研究,分析了盾构管片表面气泡的影响因素,提出了一些可缓解管片表面气泡的方法,并在生产实践中得到了较好的验证。One of the important links of shield construction is the shield segment production,where bubbles are a common quality problem.The bubbles will not only reduce the strength and service life of shield segments but also have adverse effects on the safety,economy,environmental protection,and other aspects of shield construction.Therefore,studying the prevention and control of bubbles in the production of shield segments has practical significance and important value.Relying on the subway project under construction in Nantong,through the study of concrete raw materials,mix ratio,and production process factors,the factors affecting the surface bubbles of the shield segment are analyzed,and a series of methods for guiding and controlling the surface bubbles of the segment are proposed.As a result,a good application outcome has been obtained in production practice.

关 键 词：盾构管片 混凝土 气泡 控制 

分 类 号：TU528.7[建筑科学—建筑技术科学]