Fore shaft pipe and pull-up technology
A locking tube and process technology, which is applied in infrastructure engineering, construction, sheet pile walls, etc., can solve the problems of the locking tube being unable to be pulled out, the concrete being pulled and cracked, and the axial pulling force is large, and the solidification is achieved. Good effect, reduced jacking force, good pulling effect
Active Publication Date: 2018-04-06
NINGBO UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
[0004] Due to the strong friction and cohesion between the lock pipe and the surrounding initial setting concrete, there are at least two problems in this method. First, the required axial pulling force is very large; second, it may affect the initial setting. Third, if the concrete cannot be pulled out in time, once the concrete solidifies, it may cause a serious accident that the lock pipe cannot be pulled out.
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[0033] The following descriptions are only preferred embodiments of the present invention, and therefore do not limit the protection scope of the present invention.
[0034] Examples, see Figure 1 to Figure 2 Shown: A locking pipe is applied to the construction of the joint between the ground and the wall of the building. The locking tube includes a tube body 20 in a circular tube structure and a vibrating device 10 disposed in the tube body 20 . The vibration device 10 drives the tube body 20 to vibrate along its radial direction, and controls the vibration amplitude of the tube body 20 . The vibrating device 10 vibrates to drive the pipe body 20 to move at a preset frequency and amplitude, so as to prevent the concrete around the pipe body 20 from solidifying on the pipe body 20, and at the same time, the bonding between the pipe body 20 and the concrete is adjusted by vibration Force, so that the friction force between the pipe body 20 and the concrete is reduced during ...
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The invention discloses a fore shaft pipe and a pull-up technology. The fore shaft pipe is applied to building diaphragm wall joint construction. The fore shaft pipe comprises a pipe body which is ofa circular pipe structure and a vibrating device arranged in the pipe body. The vibrating device drives the pipe body to vibrate in the radial direction and controls the vibration amplitude of the pipe body. The vibrating device is arranged in the pipe body of the fore shaft pipe, the pipe body is vibrated under the preset condition, thus friction force between concrete and the pipe body is reduced, jacking pulling force for pipe body pull-up is reduced accordingly, and the pull-up effect is good. The pipe body vibrates according to the preset vibration amplitude under driving of a rotating device, the solidification effect of the concrete around the pipe body is effectively adjusted, the concrete is prevented from being damaged under pulling during pipe body pull-up, and the solidification effect of the concrete is good.
Description
technical field [0001] The invention relates to the technical field of building ground wall joint construction, in particular to a locking pipe and a lifting process. Background technique [0002] The underground diaphragm wall is composed of many wall sections. In order to maintain the continuous construction between the wall sections, the joint adopts the lock pipe technology, that is, before pouring the concrete of the groove section, a diameter and groove is pre-inserted at the end of the groove section. The wide-adapted steel pipe is the lock pipe. After the initial setting of the concrete, the steel pipe is slowly pulled out so that the end forms a semi-tenon-shaped joint. [0003] Ordinary locking pipes and lifting methods do not involve anti-friction treatment. In related technologies, the lifting operation method of locking pipes is: first, lift the jacking machine above the locking pipes, and place them on the guide wall with the locking pipes superior. The hoop ...
Claims
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IPC IPC(8): E02D5/18E02D15/02
CPCE02D5/187E02D15/02
Inventor 李占涛
Owner NINGBO UNIVERSITY OF TECHNOLOGY