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透水软基上T型高刚度高支挡结构的研究与应用 被引量:2

Research and application of T-type high stiffness and high support structure in permeable soft foundation
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摘要 在江苏省新沟河联通长江的江边枢纽工程中,利用扶壁式结构原理和现有成熟的液压抓斗成槽及地下混凝土浇筑技术,创新性地将薄壁钢筋混凝土地连墙改造成T型支护体结构。该新型结构大大提高了地下支挡结构的整体刚度和抗弯性能,成功解决了透水软基上施工期深基坑、高边坡的临时支护、防渗以及永久支挡的高差衔接等问题。实践证明,其高悬臂、免开挖、高刚度和抗渗特性,能较好地适用于平原河流治理工程中软土岸坡条件下的高支挡工程。 In the construction of Jiangbian Hydro-complex Project,Jiangsu Province,that connects the Xingou River and the Yangtze River,based on the principle of buttressed structure,the concrete continuous wall is initiatively reformed to a T-type retaining structure by applying the mature hydraulic grab grooving technology and underground concrete pouring technology. The new structure can improve the overall stiffness and bending resistance of the underground retaining structures,and successfully solve the problems such as the temporary support,anti-seepage feature of deep foundation pit and the smooth connection of high and low permanent retaining structures. It is proved that the new structure's advantages of high cantilever,excavation free,high rigidity and impermeability are suitable for the high support projects in plain rivers harnessing engineering,which usually faces the condition of soft soil slope.
作者 高兴和 吴忠 翟高明 范天忠 GAO Xinghe 1, WU Zhong 2, ZHAI Gaoming 3, FAN Tianzhong 3(1. Jiangsu Taihu Lake Water Resources Planning and Design Institute Co., Ltd , Suzhou 215128, China; 2. Jiangsu Province Taihu Lake Treatment Project Construction Administration, Nanjing 210029, China; 3. Jiangsu Hydraulic Engineering Construction Co., Ltd , Yangzhou 225007, Chin)
出处 《人民长江》 北大核心 2018年第11期71-75,85,共6页 Yangtze River
关键词 透水软基 地下连续墙 T型支护 支挡结构 permeable soft foundation;underground concrete continuous wall;T-type support structure;retaining structures
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