A steel pipe pile and its construction method for breaking the reef limestone formation

A technology for steel pipe piles and reef limestone, applied in the field of steel pipe piles and their construction, can solve problems such as difficulty in pile foundation construction, delay in construction period, deformation of pile heads, etc., so as to improve the efficiency of rock penetration, save pile driving costs, and reduce friction. The effect of resistance

Active Publication Date: 2021-04-06
CHINA MAJOR BRIDGE ENERGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the existing steel pipe piles of bridges are driven into hard strata such as reef limestone, problems such as edge curling and pile head deformation often occur, which bring great difficulties to pile foundation construction, resulting in delays in the construction period and increased costs

Method used

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  • A steel pipe pile and its construction method for breaking the reef limestone formation
  • A steel pipe pile and its construction method for breaking the reef limestone formation
  • A steel pipe pile and its construction method for breaking the reef limestone formation

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Embodiment Construction

[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0034] see Figure 1-3 As shown, the embodiment of the present invention provides a steel pipe pile for breaking reef limestone formations, which includes a steel pipe pile body 1 and a pre-splitting cone head 2 . According to the structural feature that the reef limestone formation has a weakened surface in the vertical growth direction, a plurality of pre-splitting cone heads 2 are evenly spaced along the circumferential direction on the bottom end face of the steel pipe pile body 1 . see Figure 4-6 As shown, each pre-split cone 2 has an edge 21 protruding toward the center of the steel pipe pile body 1, and the edge 21 extends along a straight line.

[0035] The arrangement of the above-mentioned pre-splitting cones 2 should not be too sparse or too dense, and the angle between two adjacent pre-splitting cones 2 and the line connecting t...

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Abstract

The invention discloses a steel pipe pile for breaking a reef limestone formation and a construction method thereof, and relates to the technical field of steel piles. The steel pipe pile for breaking a reef limestone formation includes a steel pipe pile body; a pre-split cone head , which is provided with a plurality of pre-splitting cones arranged on the bottom end surface of the steel pipe pile body along the circumferential direction, and the pre-splitting cones have edges protruding toward the center of the steel pipe pile body. The steel pipe pile for breaking the reef limestone formation of the present invention splits the reef limestone formation in advance through the pre-split cone head along the weakened surface in the vertical growth direction of the reef limestone formation, avoiding the contact of the end surface of the steel pipe pile body with the reef limestone The formation reduces the resistance of the end, ensures that the steel pipe piles can be driven into the hard reef limestone smoothly, and improves the construction efficiency of the steel pipe piles.

Description

technical field [0001] The invention relates to the technical field of steel piles, in particular to a steel pipe pile for breaking reef limestone formations and a construction method thereof. Background technique [0002] Coral reef formations exhibit the characteristics of reef limestone. Reef limestone is biodiagenetic and has the characteristics of large pores, strong structure, high brittleness and anisotropic strength, showing extremely complex geotechnical engineering characteristics. The reef limestone samples often show brittle failure after the splitting test, the failure surface is relatively obvious, and the fracture surface is mostly split along the vertical direction, indicating that the reef limestone has the structural characteristics of a weakened surface along the vertical growth direction. [0003] When existing steel pipe piles for bridges are driven into hard strata such as reef limestone, problems such as edge curling and pile head deformation often oc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/28E02D5/72
CPCE02D5/285E02D5/72
Inventor 肖海珠谭国宏邱远喜侯鹏飞苑仁安陈翔李华云唐斌熊锴
Owner CHINA MAJOR BRIDGE ENERGINEERING
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