Construction method of grouting bored pile after self-circulation
A technology of bored piles and construction methods, applied in the direction of sheet pile walls, foundation structure engineering, construction, etc., can solve the problems such as mud pollution of the environment, achieve the effects of saving soil and water resources, improving bearing capacity, and reducing pollution
Active Publication Date: 2017-01-11
CHANGZHOU NO 1 CONSTR GRP
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Problems solved by technology
[0003] The purpose of the present invention is: aiming at the problems in the prior art, to provide a construction method of grouting bored piles after self-circulation, which can not only improve the bearing capacity of foundation piles, but also effectively solve the problems of water and soil waste and mud pollution.
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Embodiment 1）
[0048] See Figure 1 to Figure 4 , the self-circulation post-grouting bored pile construction method of this embodiment is suitable for the construction of bored piles with large construction sites and high requirements on pile body quality.
[0049] The self-circulation back grouting bored pile construction method of the present embodiment mainly includes the following steps:
[0050] ① Determining the pile position and drilling rig positioning:
[0051] Step 1: Measure and place the axis, pile position and elevation control points according to the drawing according to the general plan, coordinates and elevation datum points provided by the owner;
[0052] Step 2: Number each pile according to the pile location map, and control the coordinates according to the general plan, turn over the pile location coordinates of each pile one by one, use the total station to stake out on the spot, and hang the stakeout points on the spot Pile number plate;
[0053] Step 3: Retest the p...
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The invention provides a self-circulating posterior grouting bored pile construction method. The construction method comprises the steps of (1) determining the pile position and locating a drilling machine (5), (2) arranging a mud self-circulation facility, (3) boring and primary bore clearing, (4) fabricating a steel reinforcement cage, a sounding pipe and a grouting pipe, (4) placing the steel reinforcement cage, the sounding pipe and the grouting pipe, (5) mounting a guide pipe, (7) secondary bore clearing and mounting a waterproof hydrant, (8) pouring concrete, and (9) grouting under a high pressure. According to the self-circulating posterior grouting bored pile construction method, the supporting facilities such as a mud settling basin for recovering and recycling mud are arranged in the construction site, so that the land resources and the water resources can be effectively saved, the pollution of the mud to the environment can be greatly reduced, and the environment can be protected; meanwhile, the construction cost is reduced; furthermore, the bearing capacity of the foundation pile can be effectively improved by about 30%, and therefore, under the circumstance of the certain load of the foundation pile, the diameter of the foundation pile can be accordingly reduced, the construction investment can be saved and the economic benefit can be further increased.
Description
technical field [0001] The invention relates to a grouting method in building construction, in particular to a construction method for grouting bored piles after self-circulation. Background technique [0002] Due to the scarcity of land resources, in order to make better use of limited land resources, there are more and more high-rise buildings, and the volume of buildings is also increasing, and the amount of foundation pile foundation projects has doubled. With the advancement of technology and the advantages of simple construction of bored piles, no soil extrusion, no vibration, low noise, etc., the use of bored piles in pile foundation projects of tall buildings is increasing. Correspondingly bored cast-in-place pile construction method has been seen research: as publication number is CN101139836A, title of invention is " grouting construction method behind bored cast-in-place column pile end ", publication number is CN15401014A, title of invention is " construction tec...
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IPC IPC(8): E02D5/34E02D15/04
Inventor 胡剑兴刘军王振亚施燕羽何宇扬
Owner CHANGZHOU NO 1 CONSTR GRP