Connection channel positioning method in prefabrication of spliced tower crane foundation prefabricated by concrete

A positioning method and channel technology, applied in infrastructure engineering, manufacturing tools, ceramic molding machines, etc., can solve the problems of unstable interconnection of prefabricated parts, unstable foundation, and difficulty in connecting objects through connecting channels, etc., to achieve assembly and connection Convenience, formwork saving, solid foundation effect

Active Publication Date: 2009-09-23
从卫民 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Third, the pre-embedded pipes connecting the tunnels are often deformed due to vibration and extrusion during pouring, which makes it difficult for the connectors (steel hinges, etc.) The connection is unstable (the assembled foundation is not stable), and there are major security problems

Method used

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  • Connection channel positioning method in prefabrication of spliced tower crane foundation prefabricated by concrete
  • Connection channel positioning method in prefabrication of spliced tower crane foundation prefabricated by concrete
  • Connection channel positioning method in prefabrication of spliced tower crane foundation prefabricated by concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 , 4 As shown in 6 and 6, there are three tunnels arranged in the same extension direction for the prefabricated parts of the prefabricated and assembled tower crane foundation, and the one in the middle is not provided with shear-resistant concave-convex parts, as shown in figure 2 As shown, the middle channel E is vertically arranged on the upper part of the convex shape of the end surface of the prefabricated part without setting the anti-shear concave-convex parts (in the actual prefabrication, the channel located on the upper part of the convex shape is generally provided with concave-convex parts, which are not set here. For the sake of clear expression in the figure), the other two channels F with shear concave-convex parts are vertically arranged at the lower part of the convex shape on the end surface of the prefabricated part (in the actual prefabrication, there are many channels without concave-convex parts at the lower part of the convex sha...

Embodiment 2

[0052] The prepared concrete prefabricated assembled tower crane foundation includes a central piece 10 and an end piece 9 .

[0053] First make the center piece as in Example 1, and then make the end pieces. Coat the connecting end of the center piece with isolation paint for later use; make the reinforcement cage of the end piece according to the conventional method, set the convex piece of the shear-resistant concave-convex piece at one end of the reinforcement cage of the end piece, and use the end with the convex piece as the connection with the center piece end, the convex head of the convex piece is inserted into the notch of the concave piece set by the center piece, the flash surfaces of the concave piece and the convex piece are fitted together, one end of the pre-embedded pipe is inserted into the gap around the center hole of the convex piece, and the other end extends to the vertical surface of the formwork, Insert the metal liner into the embedded pipe until it p...

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Abstract

The invention discloses a connection channel positioning method in the prefabrication of a spliced tower crane foundation prefabricated by concrete, comprising shearing resistant concave-convex pieces and a molding board for the end part of a steel reinforcement cage of a prefabricated element and pre-buried pipes for a connection channel positioned between the shearing resistant concave-convex pieces or pre-buried pipes or a connection channel positioned between the shearing resistant concave-convex pieces and the molding board. The positioning method is characterized in that a metal insert penetrates through the pre-buried pipes and the shearing resistant concave-convex pieces, and two ends of the metal insert are abutted on the molding board; a locking rod penetrates through the metal insert, and two ends of the locking rod penetrate out of holes arranged at the molding board and then are tensioned and fixed. The invention adopts the mode that a central part is prefabricated, transition pieces or end pieces are fabricated by depending on the concave pieces of the connection end heads of the central piece to be matched with the convex pieces of the transition pieces or the end heads of the end pieces for ensuring that the connection channel of each prefabricated piece is on a central line; and the invention is spliced conveniently, is labor-saving and time-saving, and has stable and safe foundation.

Description

Technical field: [0001] The invention relates to the installation and fixing foundation of construction machinery, in particular to a positioning method for connecting tunnels in the foundation prefabrication of concrete prefabricated and assembled tower cranes. Background technique: [0002] At present, the concrete prefabricated and assembled tower crane foundation, because of its short on-site construction period, convenient and quick disassembly, assembly and transportation, no environmental pollution, no waste of resources, and can improve the utilization efficiency of the tower crane and save the use cost of the tower crane, It is generally welcomed and well promoted and applied. However, the prefabrication of the center piece, transition piece and end piece of the foundation of this concrete prefabricated assembled tower crane has the following defects, which need to be further improved. First, each assembled piece has always been prefabricated in a single piece. Whe...

Claims

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Application Information

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IPC IPC(8): B28B23/02E02D27/44
Inventor 从卫民
Owner 从卫民
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