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Wu L.-Q.,Zhejiang Huazhan Engineering Design Institute | Xia J.-Q.,Sailing Group Company Ltd | Kong Q.-H.,Zhejiang Huazhan Engineering Design Institute | Kong C.,Ningbo Kaidi Architecture Technology Ltd.
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | Year: 2010

Compared with old type, the new type of pile shoe has knurled trumpet shape which increases the quantity of soil going to steel pipe. The working principle of earth-removing pipe and the connection between steel pipe and steel cover board are present herein. Additionally, notch of steel pipe and steel cover board are analyzed as well as the construction of occlusal pipe pile cast-in-situ. As a retaining pile, occlusal pipe pile cast-in-situ can resist lateral earth pressure in foundation pit engineering and has the characteristics of big stiffness of flexural members. Still, it improves soil extrusion and reliable seepage control. Compared with underground diaphragm wall, it can save forty percent steel and concrete at least. So, occlusal pipe pile is the most economical foundation pit which has no less than three stories underground as well as the extra-deep platform of rail transit. Source


Ma B.-S.,Zhejiang Huazhan Engineering Design Institute | Wu X.-W.,Zhejiang Huazhan Engineering Design Institute | Kong Q.-H.,Zhejiang Huazhan Engineering Design Institute | Kong C.,Ningbo Kaidi Architecture Technology Ltd.
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | Year: 2010

A shipyard in Mayi island of Zhoushan sits on reclaimed land filled with rocks the biggest diameter of particle of which is more than 1 m, and thickness of fillstratum is more than 22 m. Because of extremely unstable fill foundation and short construction time, PHC pile is used. Making a hole for each pile for passing through the fillstratum smoothly. In order to garantee the bearing capacity of planting pile, the monitoring data assists the pile construction. Then, displacement of dam and micro-displacement of high fill pile are under controlled. Source

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