Construction method for mid-partition wall of single-hole double-track tunnel
By using a movable gantry steel platform and steel formwork trolley to simultaneously bind and seal the reinforcing steel of the central partition wall in a single-bore double-track tunnel, and using flue slabs for concrete pumping and pouring, the problem of low construction efficiency of the central partition wall was solved, and the synchronous construction of shield tunneling and the central partition wall was realized, thus improving the efficiency and quality of tunnel construction.
CN121556929APending Publication Date: 2026-02-24SHANGHAI TUNNEL ENG CO LTD
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Patent Information
- Application Number
- CN202511791737.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-01
- Publication Date
- 2026-02-24
AI Technical Summary
Technical Problem
The existing technology for constructing the partition wall in a single-bore double-track tunnel is inefficient and cannot meet the needs of coordinating shield tunneling and partition wall construction.
Method used
A movable gantry steel platform and a steel formwork trolley were used to simultaneously carry out the reinforcement binding and formwork sealing operations of the central partition wall, and concrete was pumped and poured using flue slabs, so as to realize the synchronous construction of the central partition wall and the shield tunneling.
Benefits of technology
It improved the construction efficiency of the central partition wall and enhanced the overall construction efficiency and quality of long-distance single-bore double-track tunnels.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to a single-hole double-track tunnel mid-partition wall construction method, which is based on synchronous construction of tunnel shield, bow-shaped piece installation and flue plate installation, and comprises the following steps: S1, carrying out mid-partition wall position lofting in an area where a bow-shaped piece is installed behind a shield tunneling machine, and completing steel bar planting operation of a mid-partition wall; s2, a movable door type steel platform is used for binding reinforcing steel bars of the mid-partition wall along the embedded reinforcing steel bars on the bow-shaped piece; s3, top flue plates at the corresponding positions are installed synchronously by means of the movable door type steel platform, and steel bars at the corresponding positions of the top of the middle partition wall are connected with the flue plate embedded connectors; during shield tunneling construction, the movable door type steel platform and the steel mould trolley are synchronously used for construction of the mid-partition wall, and while transportation of a construction vehicle is not affected, concrete pouring of the mid-partition wall is conducted from the upper portion of the flue plate in a pumping mode, so that synchronous construction of the mid-partition wall and shield tunneling is completed; the purpose of improving the middle partition wall construction efficiency is achieved.
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