Construction method for empty hole through long spiral drilled press-grouting pile
A technology of long spiral drilling and construction method, applied in sheet pile wall, foundation structure engineering, construction and other directions, can solve the problems of prolonging the construction period, restricting the development of long spiral pile foundation, wasting time, etc., so as to improve the construction speed and efficiency. Effect
Active Publication Date: 2014-12-10
江西中恒地下空间科技有限公司
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Problems solved by technology
[0002] At present, in the construction of buildings with basements, the soil in the foundation pit needs to be excavated first, and then the pile foundation construction is carried out, which wastes a lot of time, prolongs the construction period, and seriously restricts the development of the long screw pile foundation industry.
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[0026] A construction method for empty holes of long auger bored grouting piles, as attached Figure 4 , 5 Shown, it is characterized in that comprising the following steps:
[0027] Step 1: Measure the pile position, use the special vibrator of pile driver 2 to clamp the casing, vibrate it to the bottom of the hole 50 cm, and then remove it;
[0028] Step 2: Once the pile driver is in place, after drilling to the predetermined depth of the pile hole, the pile hole will be drilled through the long auger drill rod.
[0029] Concrete is poured at the bottom, and at the same time, slowly lift the long auger until it reaches the bottom of the hole, stop the concrete, lift the long auger out of the pile hole, and move the pile driver away;
[0030] Step 3: Use the special vibrator of pile driver 2 to clamp the special guide rod, vibrate it to the lower part of the concrete surface 20 cm, open the cleaning device of the special guide rod, and then lift the special guide rod upward...
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The invention relates to a construction method for an empty hole through a long spiral drilled press-grouting pile. The construction method comprises the following steps: a pile placing position is measured: a vibrator special for a pile machine II is adopted to clamp a casing pipe and the casing pipe is vibrated into the position 50 centimeter away from the bottom of the empty hole and then moved away; a pile machine I is in the position and drills to the preset pile hole depth and then concrete is grouted through pressing; a long auger stem is lifted slowly until concrete is grouted to the bottom of the empty through pressing; the long auger stem is lifted out the pile hole and the pile machine I is move away; the vibrator special for the pile machine II is adopted to clamp a special guide rod and the special guide rod is vibrated into the position 20 centimeter away from the lower part on the surface of the concrete; a cleaning device for the special guide rod is started and the special guide rod is lifted upwards out of the pile hole; the vibrator special for the pile machine II and the guide rod are adopted to insert a reinforcing cage into the designed depth and then the special guide rod is lifted out; finally, the casing pipe is clamped by the vibrator special for the pile machine II and lifted by vibration. Through the adoption of the construction method, under the condition that no foundation pit is excavated, the integrated operation of the pile foundation is realized, and a technical blank of the long spiral drilled press-grouting pile is filled.
Description
technical field [0001] The invention relates to the field of building construction, in particular to a construction method for empty holes of long auger bored grouting piles. Background technique [0002] At present, in the construction of buildings with basements, it is necessary to dig out the soil in the foundation pit before carrying out pile foundation construction, which wastes a lot of time, prolongs the construction period, and seriously restricts the development of the long screw pile foundation industry. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a construction method for the empty holes of the long auger bored grouting piles with fast construction speed and high engineering quality. [0004] In order to solve the above technical problems, the technical solution of the present invention is: a construction method for the empty holes of long auger bored grouting piles, which is characterized in that ...
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Login to View More IPC IPC(8): E02D5/38E02D5/56E02D11/00E02D15/02
Inventor 马春根曹开伟熊小林曹端全
Owner 江西中恒地下空间科技有限公司