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Segment bent pipe bolt hole mold and implementation method thereof

A technology for bolt holes and molds, which is applied to molds, mold fixing devices, mold auxiliary parts, etc., can solve the problems of poor positioning accuracy, poor hole quality, and many operating procedures, and achieve accurate positioning, good hole quality, and easy operation. simple effect

Inactive Publication Date: 2020-04-14
CHINA CONSTR THIRD ENG BUREAU GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional shield segment production process, whether it is the old-fashioned ground mold production or the new-style assembly line production, the elbow bolt hole molds in the segment molds are basically the same, consisting of a PVC pre-embedded protective sleeve, two conical The sealing ring and a set of top tight positioning pins have many common defects: first, the mold is complicated, the operation process is many, time-consuming and laborious; second, the positioning accuracy is poor; third, it is easy to leak, and the quality of the hole is poor.

Method used

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  • Segment bent pipe bolt hole mold and implementation method thereof
  • Segment bent pipe bolt hole mold and implementation method thereof
  • Segment bent pipe bolt hole mold and implementation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0036] An implementation method using the above-mentioned segment elbow bolt hole mold, comprising the following steps:

[0037] 1) After closing the inner arc mold 4 and the side mold 5, the segment mold cavity is formed; the segment elbow bolt hole mold also includes an outer arc mold and a bottom plate, an inner arc mold 4, a side mold 5, and an outer arc mold. The surface mold and the side mold 5 are spliced ​​to each other on the bottom plate along the circumferential direction, thereby forming the cavity of the segment mold;

[0038] 2) hoisting the segment reinforcement cage into the cavity of the segment mold;

[0039] 3) Install the two ends of the arc-shaped metal mold on the two magnetic bases respectively;

[0040] 4) Pour concrete into the segment mold cavity;

[0041] 5) Vibrate and steam the concrete in the cavity of the segment mold successively;

[0042] 6) After the segment in the cavity of the segment mold is completely formed, the segment and the cavity ...

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Abstract

The invention discloses a segment bent pipe bolt hole mold and an implementation method thereof. The segment bent pipe bolt hole mold comprises an arc-shaped metal mold, an inner cambered surface moldand a side surface mold. Magnetic bases are arranged on inner sides of the inner cambered surface mold and the side surface mold, and two ends of the arc-shaped metal mold are magnetically connectedwith the magnetic bases on the inner cambered surface mold and the side surface mold. Accurate positioning, firm fixing and convenient demolding are achieved, effective bent pipe bolt holes are formedin a concrete duct piece, cost is saved, a sealing ring is not needed, operation is easy, a slurry leakage phenomenon does not exist, demolding is convenient, and hole forming quality is good.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering, in particular to a segment bend pipe bolt hole mold and an implementation method thereof. Background technique [0002] With the rapid development of urban subways in my country, a large number of shield segments have been applied to the lining construction of shield tunnels. The outer diameter of ordinary single-line subway tunnel segments is between 6 meters and 7 meters, and the ring width is 1.2 meters or 1.5 meters. They all adopt a 6-block structure, and each segment has 4 to 10 elbow bolt holes. Elbow bolts are used for segment connection during construction. In the traditional shield segment production process, whether it is the old-fashioned ground mold production or the new-style assembly line production, the elbow bolt hole molds in the segment molds are basically the same, consisting of a PVC pre-embedded protective sleeve, two conical The sealing ring and a set of top ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B7/18B28B7/28B28B7/00B28B1/04
CPCB28B1/045B28B7/0002B28B7/002B28B7/18B28B7/28
Inventor 张琨王辉王畅孙金桥王开强陈波夏劲松刘志茂
Owner CHINA CONSTR THIRD ENG BUREAU GRP CO LTD