Qingdao University of Technology

Ocean University of China

China Railway 14Th Bureau Group Shield Engineering Coporation Limited

China Railway 14Th Bureau Group Corporation Limited

Shutong Yang

Chunwei Zhang

Ben Mou

Tao Liu

Jian Chen

Fei Sha

Mingshuai Xi

Hao Kong

Rui Fan

Meng Bu

Zhe Zhang

Yuhong Diao

Dehu Yu

Qingsheng Meng

Naiyin Yang

Xuchuan Lin

Lanying Zhang

Xiangyuan Zheng

Peng Chen

Jicheng Shu

Yongtao Bai

Jianyong Zhang

Qiguang Duan

Gongbiao Yang

Weixing Zhang

Yixiang Li

A synchronous single-liquid grouting slurry, its technology and application for large diameter shield engineering under water-rich, high-pressure and weak soil strata conditions, comprising raw materials: 1050-1200 parts of gold tailing, 420-480 parts of silicate cement clinker, 220-240 parts of fly ash, 45-120 parts of waste clay brick, 65-95 parts of slag, 25-45 parts of limestone tailing, 70-80 parts of steel slag, 30-45 parts of silica fume, 15-22 parts of desulfurized gypsum, and 9-15 parts of quick-setting and early-strength composite additive. The invention controls the d, dand dof the material particles as 35-40, 42-48 and 50-55 μm, respectively. Gold tailing with the particle size of 120-600 μm being used as the fine aggregate, their volume fractions are 40-60%. The slurry production technique, comprising crushing-sieving-superfine ball milling-homogenization-particle size classification-variable speed mixing being developed. The shield tail eight-point grouting technique is being developed for filling.

Synchronous single-liquid grouting slurry, its technology and application for large diameter shield engineering under water-rich, high-pressure and weak soil strata conditions

A prefabricated reinforced concrete-filled steel pipe sleeve joint includes high-strength outsourcing steel pipes, reinforcement restraining plates, high-tensile reinforcements, transformation separation sleeves and an ordinary outsourcing steel pipe, wherein: two transformation separation sleeves are respectively located at an upper end and a lower end of the ordinary outsourcing steel pipe; one of the transformation separation sleeves, which is located at the upper end of the ordinary outsourcing steel pipe, is connected with one of the high-strength outsourcing steel pipes; the other transformation separation sleeve, which is located at the lower end of the ordinary outsourcing steel pipe, is connected with the other high-strength outsourcing steel pipe; the high-tensile reinforcements penetrate through the ordinary outsourcing steel pipe; upper ends and lower ends of the high-tensile reinforcements are respectively extended to interiors of the high-strength outsourcing steel pipes; the high-tensile reinforcements are connected with the transformation separation sleeves.

Prefabricated reinforced concrete-filled steel pipe sleeve joint

Growing community of inventors

Shandong, China

Shutong Yang