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A platform for research: civil engineering, architecture and urbanism
Bottom expanding-multisection side expanding anti-pull prestressed anchoring gravel pile and construction method
The invention discloses a bottom expanding-multisection side expanding anti-pull prestressed anchoring gravel pile and a construction method and belongs to the technical field of foundation base structures. The gravel pile comprises a side expanding gravel pile body provided with multiple side expanding sections and at least one prestressed anchor cable/rod; an anchor disc is arranged at the top of the side expanding gravel pile body, and a bottom expanding base provided with an expanded bottom is arranged at the bottom of the side expanding gravel pile body. The construction method comprises the steps that a gravel pile hole is dug, and bottom expanding and side expanding are conducted; a hardcore bed is constructed; a reinforced concrete bottom expanding base is constructed, and the anchor cable/rod is fixed in the reinforced concrete bottom expanding base; the side expanding gravel pile body is constructed; the anchor disc at the top of the pile and an anchor plate are constructed, and anchor cable/rod prestressing force is exerted. According to the bottom expanding-multisection side expanding anti-pull prestressed anchoring gravel pile and the construction method, gravel is tightly pressed in a gravel hole through the anchor cable/rod so as to form the gravel pile body, so that the bottom expanding base, the gravel pile body and the anchor disc are made into a force-bearing whole, and thus the anti-pull capacity is effectively improved; in addition, the anti-shearing and anti-slip resistance between a pile body and a soil body is increased through the side expanding gravel pile body and the bottom expanding base, the stratum applicability of a structure is improved, and the influence of underground water is reduced.
Bottom expanding-multisection side expanding anti-pull prestressed anchoring gravel pile and construction method
The invention discloses a bottom expanding-multisection side expanding anti-pull prestressed anchoring gravel pile and a construction method and belongs to the technical field of foundation base structures. The gravel pile comprises a side expanding gravel pile body provided with multiple side expanding sections and at least one prestressed anchor cable/rod; an anchor disc is arranged at the top of the side expanding gravel pile body, and a bottom expanding base provided with an expanded bottom is arranged at the bottom of the side expanding gravel pile body. The construction method comprises the steps that a gravel pile hole is dug, and bottom expanding and side expanding are conducted; a hardcore bed is constructed; a reinforced concrete bottom expanding base is constructed, and the anchor cable/rod is fixed in the reinforced concrete bottom expanding base; the side expanding gravel pile body is constructed; the anchor disc at the top of the pile and an anchor plate are constructed, and anchor cable/rod prestressing force is exerted. According to the bottom expanding-multisection side expanding anti-pull prestressed anchoring gravel pile and the construction method, gravel is tightly pressed in a gravel hole through the anchor cable/rod so as to form the gravel pile body, so that the bottom expanding base, the gravel pile body and the anchor disc are made into a force-bearing whole, and thus the anti-pull capacity is effectively improved; in addition, the anti-shearing and anti-slip resistance between a pile body and a soil body is increased through the side expanding gravel pile body and the bottom expanding base, the stratum applicability of a structure is improved, and the influence of underground water is reduced.
Bottom expanding-multisection side expanding anti-pull prestressed anchoring gravel pile and construction method
HUANG DA (author) / DAI CHAO (author) / ZENG BIN (author) / GU DONGMING (author) / ZHONG ZHU (author)
2015-09-23
Patent
Electronic Resource
English
IPC:
E02D
FOUNDATIONS
,
Gründungen
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