大断面矩形顶管机始发和接收施工技术

Originating and Accepting Construction Technology of Large-section Rectangular Push Bench

国内目前最大断面顶管机首次应用于郑州市纬四路中州大道下穿工程。详细介绍了采用双排SMW工法桩加固土体、实施接收井加固区降水等一系列技术措施,控制了施工风险,确保了顶管机始发和接收施工过程的顺利,验证了各项技术措施和施工方案的可行性。

The push bench with the currently largest cross section in China is used in the underground pass-through work at Weisi Road and Zhongzhou Avenue,Zhengzhou City,for the first time.The article introduces technical measures,such as dual-row SMW pile reinforcing soil body and precipitation of acceptance well reinforcing zone,in detail to control risks of construction,ensure successful originating and accepting construction process of the push bench and verify feasibility of various technical measures and construction plans.