Wuhan Geological Survey and Foundation Engineering Co.

Wuhan, China

Wuhan Geological Survey and Foundation Engineering Co.

Wuhan, China
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Ma Q.,Wuhan Geological Survey and Foundation Engineering Co. | Zhou Y.-J.,Wuhan Geological Survey and Foundation Engineering Co.
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | Year: 2014

The reasons and disasters of diffraction flows around H-type steel joints of diaphragm wall are analyzed. Combined with their main measures and shortcomings, a new kind of H-type steel joint for preventing diffraction flows is discussed on the. The rubber capsule is placed on the wall of H-type steel joint, and the grouting pipe is placed in the rubber capsule. Then the rubber capsule is expanded into the cement slurry and closely pastes on the side wall of the diaphragm wall, so as to prevent diffraction flows around the concrete channel. The proposed measures can be used in H-type steel joints and also in locked pipe ones.


Zhang Y.-J.,Wuhan Geological Survey and Foundation Engineering Co. | Zeng J.-W.,Wuhan Geological Survey and Foundation Engineering Co.
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | Year: 2014

Based on an engineering example the dynamic information and emergency treatment of construction monitoring of deep foundation pits are introduced. According to the change frequency of monitoring deformation severity, formation and surrounding environment conditions, the reinforcement schemes are prepared. The emergency reinforcement scheme for the foundation pit is discussed under the deformation of ultra thick silt layer.

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