Construction equipment for inverted arch of two-track tunnel of high-speed railway

Abstract

The invention relates to construction equipment for the inverted arch of a two-track tunnel of a high-speed railway, belonging to the technical field of tunnel construction equipment. In the invention, the construction equipment for the inverted arch of the two-track tunnel of the high-speed railway comprises a trestle, an inverted arch mould frame and a terminal beam, wherein the terminal beam is connected with the inverted arch mould frame to form into a whole; the terminal beam and / or the inverted arch mould frame are / is connected to the trestle; and the terminal beam and the inverted archmould frame autonomously move on the trestle. In the invention, the construction equipment for the inverted arch of the two-track tunnel of the high-speed railway can position accurately, move in place fast and convenient, and has the advantages of high mechanization level, low article labor intensity and low construction cost; the construction equipment can complete the inverted arch through one-time monolithic casting with high construction efficiency and high construction quality, and can provide guarantee for quick tunneling; construction organization and work procedure partition in the tunnel are optimized, thereby being beneficial to standardized operation and safe and civil construction; and the construction operation is convenient and fast, breaks through the traditional inverted arch construction technology and ensures the continuous construction quality of the inverted arch, thus being in favor of popularization and application.

Description

technical field [0001] The invention relates to a tunnel construction equipment, in particular to a construction equipment for an inverted arch of a high-speed railway double-track tunnel. Background technique [0002] In recent years, there have been many collapse accidents in the process of tunnel construction at home and abroad, resulting in large casualties and property losses. Investigation and statistics show that the main reasons for these accidents are the improper initial support of the tunnel and the failure to follow up the follow-up procedures such as inverted arch and secondary lining in time. In order to ensure the safety of railway tunnel construction, the Ministry of Railways has increasingly strict requirements on the distance between the inverted arch and the face of the tunnel. The "Technical Regulations for Construction Safety of Railway Tunnel Engineering" (TB10304-2009) stipulates that the inverted arch and the tunnel face in Class III surrounding rock ...

AI Technical Summary

Problems solved by technology

[0009] (3) Additional construction costs are high and resources are wasted seriously

The currently widely used construction method of assembling small formwork requires more than 320kg of steel bars to reinforce and support every 8 meters, and requires 10 professional carpenters to work for more than 4 hours to complete the installation work. The installation cost of the inverted arch formwork is about 225 yuan / Meter

[0010] (4) The quality of the project is difficult to guarantee

The large formwork construction method also has the difficulty of moving and reinforcing, and the problem of easy overall run-out of the formwork

[0011] (5) The construction organization in the tunnel is chaotic, and standardized operations and safe and civilized construction are difficult

In order to speed up the construction progress of the inverted arch, the method of opening more inverted arch construction surfaces or increasing the construction length of the inverted arch is generally used at present, resulting in traffic jams in the cave, confusion in the organization of personnel and equipment, lower operating standards, increased safety hazards, and poor civilized construction. and many other issues

[0012] (6) In the supporting project of tunnel construction mechanization, the problem that the construction progress of the inverted arch cannot be kept in line with the progress of the tunnel face excavation has become a key issue in the realization of tunnel mechanization and rapid excavation

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