Abstract
The article provides a brief description of honeycomb-shaped segments, comparing their advantages and disadvantages with other segment types. It introduces the application of honeycomb-shaped segment lining in various engineering projects and presents an overview of the steel mold design for honeycomb-shaped segments based on the Guangzhou Rongjiang Guanbu Water Diversion Project. The article describes the design difficulties encountered in the steel mold due to the special shape of the segments and implements a series of targeted designs, such as honeycomb-shaped steel mold base design and end plate opening device design. Through independently designed end plate sliding rail devices, end plate opening/closing devices, and damping buffer devices, the problem of difficult opening and closing of end plates for special-shaped segments is solved, successfully completing the design, processing, and manufacturing of the project. The project delivered a total of 20 sets of molds, and the produced segments meet the design standards.
Full Text
Preamble
Overview of the Design of Steel Molds for Honeycomb-Type Tunnel Lining Segments
Wen Xiongfu¹
¹Shanghai Tunnel Engineering Co., Ltd., Shanghai 200000, China
Abstract
This paper provides a comprehensive overview of honeycomb-type tunnel lining segments, comparing their performance characteristics with conventional segment designs and reviewing their implementation across various engineering projects. Focusing on the Guangzhou Rongjiang Guanbu Water Diversion Project as a case study, the paper outlines the specialized steel mold design developed for manufacturing these unique segments.
The distinctive geometry of honeycomb segments introduced significant challenges in steel mold design. To address these difficulties, a series of targeted solutions were engineered, including a dedicated base structure and an innovative end plate opening mechanism. Through the integration of custom-designed sliding rail devices, opening/closing systems, and damping buffer devices, the operational challenges associated with handling the special-shaped segment end plates were effectively overcome. These efforts culminated in the successful completion of the project's design and manufacturing phase, delivering 20 sets of molds that produced segments fully compliant with design specifications.
Keywords: honeycomb steel mold; special-shaped end face; steel mold design