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Deepwater embedded rock bearing platform foundation construction method

A technology for foundation construction and deep water, applied in basic structure engineering, construction, etc., can solve the problems of cofferdam not being able to be implanted to the predetermined position, unsuitable for underwater blasting construction, difficult construction of caps, etc., so as to ensure the effect of retaining water and stopping water. , Small influence, good groove quality

Active Publication Date: 2019-03-15
THE THIRD CONSTR CO LTD OF CHINA CONSTR THIRD ENG BUREAU
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the purpose of the present invention is to provide a deep-water rock-socketed cap foundation construction method, which aims to solve the problems that the existing construction conditions are not suitable for underwater blasting construction, the cofferdam cannot be implanted to the predetermined position, and the construction of the cap is very difficult. problems, effectively avoid construction constraints, and ensure the construction quality of cap foundation

Method used

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  • Deepwater embedded rock bearing platform foundation construction method
  • Deepwater embedded rock bearing platform foundation construction method
  • Deepwater embedded rock bearing platform foundation construction method

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Embodiment

[0037] A deep water rock-socketed platform foundation construction method, such as Figure 1 to Figure 4 shown, including the following steps:

[0038] Step 1, clean up the riverbed 2 cover layer, drive large and small steel pipe piles 1 into the riverbed, and weld and erect Bailey beams, and lay platform panels to form the water construction work platform 3.

[0039] Step 2. Carry out measurement and lofting according to the design drawings, and arrange the opening range of slots 5.

[0040] Step 3. Arrange the percussion drilling machine 4 on the above-water construction work platform 3, and carry out drilling construction along the opening range 5 of the slot hole.

[0041] Specifically, the slot hole is drilled first, and then the rock formation within the opening range of the slot hole is drilled to form a groove. During the construction of the slot hole, a steel casing 11 is installed at the hole position, and the steel casing 11 is buried in the rock formation 50 ~80c...

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Abstract

The invention is applicable to the technical field of bridge deepwater foundation construction and provides a deepwater embedded rock bearing platform foundation construction method. According to themethod, a percussion drill is arranged by virtue of an over-water construction work platform; a slotted hole and a groove are formed, and no coverage layer is arranged; and the non-explosion construction mode is adopted. The influence on rock stratum disturbance and the surrounding environment is small; an over-water work platform does not need to be built; pile foundation construction equipment is fully utilized; no extra new equipment needs to be invested; a cofferdam foundation groove is good in groove formation quality; and the water stop effect of a steel jacket box cofferdam is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of bridge deepwater foundation construction, and in particular relates to a construction method for deepwater rock-socketed cap foundations. Background technique [0002] During the foundation construction of deep-water bridges, when the cap is embedded in the hard rock layer of the river bed, the method of underwater blasting is usually used to clear the rock within the cap, and then the cap foundation is constructed using cofferdams. However, when the position of the cap is adjacent to other important structures, or due to environmental protection requirements, underwater blasting construction cannot be carried out, the cofferdam cannot be implanted to the predetermined position, and the construction of the cap is very difficult. According to the conditions of hydrology and rock formations of the river bed, by setting up the construction platform on the water, the rock strata within the range of the coffer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/16E02D27/52E02D19/04
CPCE02D19/04E02D27/16E02D27/525
Inventor 王勇柳家勇王平董传洲申捷牛随心王传杰
Owner THE THIRD CONSTR CO LTD OF CHINA CONSTR THIRD ENG BUREAU
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