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PHC anchor pile head reinforcing method for static load test of offshore high-pile wharf pile foundation

A technology of static load test and high-pile wharf, which is applied in the test of foundation structure, sheet pile wall, foundation structure engineering, etc., can solve the problem that the equipment and the anchor pile cannot be connected very firmly, the field operation is difficult, and the PHC at sea cannot be achieved. The requirements of pipe pile static load test and other issues can save manpower, improve the reinforcement effect, and be easy to operate.

Inactive Publication Date: 2020-12-01
NO 5 ENG CO LTD OF CCCC FIRST HARBOR ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The scope of this method is cast-in-situ piles in land areas. Because this method cannot connect the equipment and anchor piles very firmly, and the on-site operation is difficult, it cannot meet the requirements of the static load test of offshore PHC pipe piles, so it is not suitable for large-diameter PHC at sea. Reinforcement of pipe piles

Method used

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  • PHC anchor pile head reinforcing method for static load test of offshore high-pile wharf pile foundation
  • PHC anchor pile head reinforcing method for static load test of offshore high-pile wharf pile foundation
  • PHC anchor pile head reinforcing method for static load test of offshore high-pile wharf pile foundation

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Embodiment 1

[0030] A PHC anchor pile pile head reinforcement method for pile foundation static load test of high pile wharf on the sea, comprising the following steps:

[0031] 1) Construction preparation

[0032] a) set up as figure 1 The construction platform shown; wherein, including PHC anchor piles 1, reference piles 2 and test piles 3, the PHC anchor piles 1 are provided with four, symmetrically arranged at four corners, and the reference piles 2 are provided with two, each The reference pile 2 is located between two PHC anchor piles 1, and one test pile 3 is arranged at the center of the four PHC anchor piles 1;

[0033] b) combine figure 2 , image 3 As shown, the steel ferrule 7 and the ferrule end plate 5 are welded, the inner diameter of the steel ferrule 7 is 740mm, the width of the rib plate 6 is 130mm, double-sided full welding is adopted, the thickness of the ferrule end plate 5 is 5cm, the sleeve 32 oval holes with a major axis of 20 mm and a minor axis of 15 mm are e...

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Abstract

The invention discloses a PHC anchor pile head reinforcing method for a static load test of an offshore high-pile wharf pile foundation. The method comprises the following steps that before the test,pile head concrete cutting and chiseling are conducted on a PHC anchor pile, and leveling is conducted by using cement mortar; steel hoop machining is conducted, a hoop end plate is punched, and the hoop end plate and a steel hoop are fixed; and the hoop end plate is punched for penetration of a prestress steel bar in the PHC anchor pile, the steel hoop is placed on the leveled PHC anchor pile head, then an anchorage device and a clamping piece are used for anchoring, and finally a static load test auxiliary beam and the steel hoop are fixed. According to the method, the problem that an offshore large-diameter PHC anchor pile is difficult to anchor can be effectively solved, and compared with a traditional pile head reinforcing mode, a large amount of early-stage work is conducted on the land in advance, so that ship machine use is effectively reduced, manpower is saved, and pile head reinforcing material input is reduced.

Description

technical field [0001] The invention relates to a PHC anchor pile pile head reinforcement method for pile foundation static load test of high pile wharf on the sea. Background technique [0002] The early PHC anchor pile reinforcement method for pile foundation static load test is to place a steel cage in the pile and pour concrete. Wrap steel plates with a thickness of 3 mm to 5 mm within 1 pile diameter from the pile top or set stirrups within 1.5 pile diameters from the pile top, and the spacing should not be greater than 100 mm. 1-2 layers of reinforced mesh sheets are set on the top of the pile, with a spacing of 60mm-100mm. The scope of this method is cast-in-situ piles in land areas. Because this method cannot connect the equipment and anchor piles very firmly, and the on-site operation is difficult, it cannot meet the requirements of the static load test of offshore PHC pipe piles, so it is not suitable for large-diameter PHC at sea. Reinforcement of pipe piles. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D33/00E02D5/60E02D5/58E02D5/48
CPCE02D5/48E02D5/58E02D5/60E02D33/00E02D2600/30
Inventor 朱全夏国光盛健
Owner NO 5 ENG CO LTD OF CCCC FIRST HARBOR ENG
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