Threaded pile construction technology
A construction technique and threaded pile technology, applied in sheet pile walls, foundation structure engineering, construction, etc., can solve problems such as pile collapse and achieve the effect of avoiding slag inclusion
Active Publication Date: 2015-09-02
CHONGQING CONSTR RESIDENTIAL ENG +1
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Problems solved by technology
[0005] The present invention intends to provide a threaded pile construction process to solve the problem of easy pile collapse in the prior art
Method used
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Embodiment Construction
[0016] The main technological process of the embodiment of the present invention is as figure 1 As shown, specifically, this implementation includes the following contents.
[0017] 1. Drilling rig in place
[0018] Drive the thread drilling rig to the construction position, determine the position of the drilling rig’s luffing position, the forward or backward tilt of the chassis according to the pressure requirements and the hole depth, and adjust the mast vertically to ensure that the center of the power head, the center of the drill pipe, and the center of the drilling hole are at the same vertical line. Rotate the drilling rig back and forth to check whether there is any interference in the construction process and whether it is convenient to lift the reinforcement cage. Judging possible accidents during construction according to the geology, if there is an accident, whether it is convenient to deal with it. Fully consider issues such as construction effectiveness, cons...
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The invention discloses a thread pile construction process which is used for solving the problem that piles collapse easily in the prior art. The thread pile construction process comprises the following steps: positioning a ram machine, and performing two-way control on the verticality by aligning with a pile core; aligning with a pile position during drilling, and controlling the axial movement speed and rotation speed of a drill rod by virtue of the ram machine in the pile hole thread section drilling process; controlling the drill rod to reversely rotate and ascend along the thread track of a soil body by virtue of the ram machine when pile hole rear lift drilling is finished; adopting a synchronization technology, namely synchronizing the ascending speed and the reverse rotation speed, so as to form a thread concrete pile body; placing a reinforcement cage into a pile body concrete by use of a rear placement mode, so as to form a thread pile. The technical scheme has the advantages that a screw rod is directly utilized as a breast wall during pore forming, so that the risk that piles formed by common machines collapse is avoided, and quality defects such as slag inclusion, necking and pile breaking in a concrete pouring process are effectively avoided; the reinforcement cage of the thread pile can be used for avoiding contact between reinforcement and mud, so that the reinforcement can be fully hold and wrapped by concretes, and the service life of the pile is prolonged.
Description
technical field [0001] The invention relates to a foundation construction technology in the construction field. Background technique [0002] The threaded pile adopts a variable cross-section structure shape. During the hole forming process, the pile side soil is squeezed and densified. After the pile is formed, part of the soil body forms threads, and the pile side soil forms nuts. Nuts snap together tightly. The drill pipe is then fully lifted, and the reinforcement cage is placed in the pile hole for concrete pouring. [0003] Compared with the driven-in prefabricated pile, threaded pile construction has low construction noise, no vibration, and has no effect on the piles that have been constructed; compared with full auger drilling and ordinary mud retaining wall-forming cast-in-place piles, there is no mud pollution and spoil problem . Threaded pile is a new type of pile with high practical value. [0004] In the prior art, there are still some deficiencies in the t...
Claims
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IPC IPC(8): E02D5/56
Inventor 陈怡宏张纯洁李海涛刘强张意陈松
Owner CHONGQING CONSTR RESIDENTIAL ENG