The utility model relates to a construction method of underground space constructed by a shield shallow excavation combined method, belonging to the technical field of underground space construction methods. The concrete construction method of the invention is that two or more than two shield tunnels are first constructed by using shield tunneling method, and then shallow excavation method is adopted to excavate the soil between the shield tunnels. By adopting the method of the invention, the construction of the large section underground space is safe and efficient, the structure is characterized by force, the construction speed is fast, and the construction cost is low. The method of the invention can be used for building large underground space in various forms.
【技术实现步骤摘要】
【技术保护点】
一种盾构-浅埋暗挖复合法建造地下空间的施工方法,其特征在于:步骤如下: 步骤一,在计划开始施工端开挖施工竖井(9); 步骤二,根据开挖断面大小及工程的功能要求确定先行修建两个或两个以上盾构隧道(1)的直径,然后,在施工竖井(9)内,向拟建造地下空间的延伸方向采用盾构法先行修建盾构隧道(1),并在盾构施工过程中在盾构隧道顶部管片预埋钢板,在完成的盾构隧道内施工内支撑结构; 步骤三,在施工竖井(9)内,采用浅埋暗挖法开挖两相邻盾构隧道之间的土体上部(2),并施作顶部初次衬砌(3),所述顶部初次衬砌(3)为钢格栅混凝土结构,并将其内的钢格栅两端通过连接钢板螺栓连接或焊接至盾构管片顶部的预留钢板上,使顶部初次衬砌(3)与盾构隧道(1)形成整体; 步骤四,采用浅埋暗挖法开挖相邻两盾构隧道之间土体下部(4),形成中间隧道(8),并施作中间隧道(8)的底部初次衬砌(5); 步骤五,在中间隧道(8)内设置临时支撑(6)所述在临时支撑与已有盾构隧道、顶部初次衬砌、底部初次衬砌形成了一个整体的稳定的受力结构后,拆除盾构隧道和中间隧道的之间的需拆除盾构管片(13); 步骤六,分段拆除中间隧道(8 ...
【技术特征摘要】
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