Novel steel negative ring pipe structure for shield construction

Abstract

The invention discloses a novel steel negative ring pipe structure for shield construction. The novel steel negative ring pipe structure comprises a supporting seat, a plurality of negative ring pipe pieces are arranged at the upper end of the supporting seat, the multiple negative ring pipe pieces are mutually spliced to form a negative ring pipe, a plurality of supporting pipes are arranged in the negative ring pipe, a second annular plate is arranged on the front sides of the multiple supporting pipes jointly, and a first annular plate is arranged on the rear sides of the multiple supporting pipes. First threaded holes are formed in the front sides of the multiple supporting pipes, a plurality of first bolts matched with the first threaded holes are arranged on the second annular plate, rectangular grooves are formed in the rear sides of the multiple supporting pipes, a plurality of connecting blocks matched with the rectangular grooves are arranged on the first annular plate, and second bolts are arranged on the upper parts of the multiple supporting pipes. The negative ring pipe is simple in structure, people can conveniently dismantle the supporting frame and the negative ring pipe, and a supporting frame and the negative ring pipe piece can be repeatedly used; and meanwhile, a buffering cushion is arranged, and damage to the negative pipe piece in the grouting process is avoided.

Description

technical field [0001] The invention relates to the technical field of shield tunneling, in particular to a novel steel negative ring pipe structure for shield tunneling. Background technique [0002] As the most advanced super-large special equipment for tunneling today, the shield machine is a high-tech construction equipment that realizes excavation, excavation, support, etc., and is widely used in urban rail transit, railways, highways, municipal administration, hydropower, etc. Tunnel engineering, at present, during the construction of urban rail transit engineering intervals, the shield tunneling method is often used for construction. In the process of shield tunneling construction, negative ring segments are often used. Negative ring segments are also called temporary segments. At the same time, a ring-shaped segment is installed between the reaction frame and the shield jack to give the shield machine the driving force to move forward. However, the existing negative ...

AI Technical Summary

Problems solved by technology

[0003] In the installation process of the existing negative ring segment, it is necessary to install the support frame between the reaction force frame and the shield jack. The support frame is usually installed by welding the support tube and two ring plates. It is more troublesome to investigate and deal with the support frame after the shield machine has been excavated to an appropriate mileage or the hole is opened, and the dismantled support frame cannot be used continuously, resulting in a waste of resources. At the same time, when the negative ring segment is disassembled, The segments are divided into blocks and the structure is removed block by block from top to bottom. This demolition method is cumbersome, which greatly affects the construction progress. At the same time, the existing negative ring segments are usually made of reinforced concrete. In the process of concrete concrete, due to the effect of pressure, the negative ring segments are likely to be damaged, resulting in certain economic losses. Therefore, how to reasonably solve these problems is what we need to consider

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