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Tapered wedge type adjustable device for foundation pit engineering inner support and construction method
Disclosed are a tapered wedge type adjustable device for a foundation pit engineering inner support and a construction method. The device clamps tapered legs through two clamping plates to bear and transmit steel support shaft force under the action of a plurality of rows of high-strength bolts, 30-degree included angles are formed among the contacting surfaces of the clamping plates and the tapered legs, vertical positioning is determined by adjusting the high-strength bolts, the bolts are tightened, so that the shaft force can be born, the clamping plates of the tapered wedge type adjustable device contract with the tapered legs in a smooth surface manner, the high-strength bolts penetrate bolt grooves of the tapered legs and are fixed on the clamping plates of two sides, steel support shaft pressure can be effectively born, the drawing force generated by outward deformation of a soil layer can be born, and the integrality of enclosing purlins and steel supports is improved. The device changes a traditional idea that the adjustable device is driven into a steel wedge, the contacting surfaces are enlarged, a tapered wedge is tighter in pressed by the aid of the opposite-pull action of the high-strength bolts, the integrality of a foundation pit support system is ensured, and the falling risk of the steel supports is reduced.
Tapered wedge type adjustable device for foundation pit engineering inner support and construction method
Disclosed are a tapered wedge type adjustable device for a foundation pit engineering inner support and a construction method. The device clamps tapered legs through two clamping plates to bear and transmit steel support shaft force under the action of a plurality of rows of high-strength bolts, 30-degree included angles are formed among the contacting surfaces of the clamping plates and the tapered legs, vertical positioning is determined by adjusting the high-strength bolts, the bolts are tightened, so that the shaft force can be born, the clamping plates of the tapered wedge type adjustable device contract with the tapered legs in a smooth surface manner, the high-strength bolts penetrate bolt grooves of the tapered legs and are fixed on the clamping plates of two sides, steel support shaft pressure can be effectively born, the drawing force generated by outward deformation of a soil layer can be born, and the integrality of enclosing purlins and steel supports is improved. The device changes a traditional idea that the adjustable device is driven into a steel wedge, the contacting surfaces are enlarged, a tapered wedge is tighter in pressed by the aid of the opposite-pull action of the high-strength bolts, the integrality of a foundation pit support system is ensured, and the falling risk of the steel supports is reduced.
Tapered wedge type adjustable device for foundation pit engineering inner support and construction method
ZHANG MINGJU (author) / LI JIAYUN (author) / YUAN YUAN (author)
2015-09-23
Patent
Electronic Resource
English
IPC:
E02D
FOUNDATIONS
,
Gründungen
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