Steel protective cylinder anchoring technology
A steel casing and anchoring technology, which is used in infrastructure engineering, construction, sheet pile walls, etc., can solve the problems of uneven mixing of slurry, uneven quality of piles, affecting the quality of reinforcement projects, etc., to improve the construction quality. Effect
Active Publication Date: 2014-11-05
CHINA STATE CONSTR HARBOR CONSTR
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Problems solved by technology
[0003] Due to the above construction method, the grout is injected from the gap between the pile body and the installation hole, and the grout is mixed unevenly in the soil, which affects the quality of the reinforcement project, resulting in uneven quality of the pile body
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[0021] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.
[0022] refer to figure 1 , steel casing anchoring process, comprising the following steps:
[0023] Step 1. Place the steel sheath in the lead hole, and ensure that the centerline of the steel casing is consistent with the centerline of the lead hole;
[0024] The diameter of the steel casing in the illustrated embodiment is Φ1800mm, and the diameter of the design guide hole is Φ2200mm; the guide hole with a diameter of 2.2 meters is implanted with a steel casing with an outer diameter of 1.8 meters, which can ensure the adjustment of the deviation of the pile position by about 10cm from the process;
[0025] Step 2, continuously inject concrete grout from the inside of the steel sheath, and the concrete grout overflows from the grouting hole o...
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Abstract
The invention discloses a steel protective cylinder anchoring technology. The steel protective cylinder anchoring technology comprises the steps that firstly, a steel protective jacket is placed into a leading hole, and it is guaranteed that the center line of a steel protective cylinder is consistent with the center line of the leading hole; secondly, concrete grout is poured into the steel protective jacket continuously, the concrete grout overflows from a grout frothing hole of the steel protective jacket, so that the space between the leading hole and the steel protective jacket can be filled with the concrete grout; thirdly, the steel protective jacket is filled with concrete grout again until a concrete block is formed on the upper portion of the leading hole. According to the steel protective cylinder anchoring technology, a traditional anchoring technology is improved in the three aspects including controlling the thickness of dregs in the hole, controlling the quality of concrete and controlling the grout frothing effect achieved in the gap between the steel protective cylinder and the leading hole, in this way, the steel protective cylinder anchoring quality existing after the steel protective cylinder is transplanted in bed rock can be guaranteed, and the construction quality is improved.
Description
technical field [0001] The invention relates to the field of underwater construction, in particular to a steel casing anchoring process. Background technique [0002] During the construction process, the pile body is anchored by grouting. When the pile body is placed in the installation hole, grouting is carried out at the installation hole. Generally, grouting is divided into two types: one-time grouting: normal pressure, grout can be poured Or cement mortar; secondary high-pressure grouting: divided into two grouting, the first normal pressure; the second high-pressure grouting (pure cement slurry, and before the initial setting of the first grouting, grouting should be carried out at least 2 hours later. [0003] Because the above-mentioned construction method carries out grouting from the gap between the pile body and the installation hole, uneven mixing of the grout occurs in the soil, which affects the quality of the reinforcement project and causes uneven quality of t...
Claims
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IPC IPC(8): E02D5/40
Inventor 杨志君徐雪锋漆春生秦斌林志强秦晓明
Owner CHINA STATE CONSTR HARBOR CONSTR