Anti-floating device of basement of soft soil foundation and construction process thereof

Abstract

An anti-floating device of a basement of a soft soil foundation is characterized in that the device comprises a steel sleeve tube, an outer steel round tube, a steel stranded wire, upper supporting arms, a geotechnical cloth or a high strength nylon cloth, anchoring poles, anchor arms, anchor wings, an inner steel round tube, lower supporting arms and a pile shoe. The anchor arms and the upper supporting arms are hinged, the anchor wings and the lower supporting arms are hinged, the anchoring poles are hinged to the anchor wings and the upper supporting arms, and the geotechnical cloth or the high strength nylon cloth is laid between the anchoring poles; the outer steel round tube is welded to the upper supporting arms, the inner steel round tube is welded to the lower supporting arms and arranged in the outer steel round tube, the steel stranded wire is connected with the inner steel round tube and extends to the outside through the outer steel round tube, the surface of the whole device is coated by anti-corrosive paint, and the device is placed in the steel sleeve tube and sleeved in the pile shoe. Compared with the prior art, the anti-floating device of the basement of the soft soil foundation has the obvious advantages that compared with an uplift pile, the anti-floating device is convenient to construct, low in manufacturing cost and high in economic performance; and compared with an umbrella-shaped uplift anchor, the anti-floating device has smaller initial displacement and higher uplift resistance no matter in sandy soil or soft soil and has the wider use scope.

Description

technical field [0001] The invention relates to the field of building foundations, in particular to an anti-floating device for a basement on a soft soil foundation and a construction process thereof. Background technique [0002] With the rapid development of urban construction and the limited above-ground resources, it has become an inevitable trend to fully develop and utilize underground spaces such as basements, subways, and tunnels. As one of the core issues, anti-floating of underground structures has become more prominent. At present, the anti-floating problem of buildings is mainly solved by anti-uplift piles and anti-uplift anchors. [0003] The pullout pile is provided by the friction resistance of the pile side and the self-weight of the pile body, and the pile side friction resistance exerted by the upward pullout force is limited compared with the downward pressure, and the pressure performance is the main factor. There is no advantage in terms of concrete. If...

AI Technical Summary

Problems solved by technology

However, in Wenzhou, Ningbo, Hangzhou, Shanghai, Tianjin and other soft soil areas, the initial displacement of the bolt is relatively large under the upward initial tension, and then a certain amount of pull-out resistance is exerted, and the pull-out force is small, but in The concrete in the basement was cracked before this

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