Multi-wedge block tunnel steel frame

Abstract

The invention belongs to the technical field of tunnel reinforcement, and particularly relates to a multi-wedge block tunnel steel frame. The multi-wedge block tunnel steel frame comprises inclined short steel columns, wedge blocks, lateral direction steel columns, bottom supports, slow-release gaskets, base plates, reserved bolt holes, connecting sleeves and arch top steel columns; the wedge blocks comprise pointed end threaded parts and ring gaskets, and the bottom supports comprise prefabricated base parts and reserved cast-in-situ positions. The multi-wedge block tunnel steel frame aims tosolve the problem that a small-section tunnel supporting arch top easily collapses, and overcomes the defect that under local concentrated loads or bias voltage loads, a structural steel frame is easily bent or easily yields. Multiple wedge block positions are reserved for arranging the multiple wedge blocks, it is avoided that since the number of wedge blocks in the prior art is small, problemsoccur when the steel frame and surrounding rock are connected, the traditional problem of connection of wedge blocks and the steel frame is solved, the slow release gaskets are additionally arranged at the part of connection with a foundation to adsorb small-deformation stress, the light and high steel columns are adopted for reducing the influences of self weight of the steel frame, economy is realized in size, factory prefabrication can be realized, and the steel frame is integrated in function.

Description

technical field [0001] The invention belongs to the technical field of tunnel reinforcement, in particular to a multi-wedge tunnel steel frame. Background technique [0002] my country is a mountainous country, 80% of the southwest region is mountainous, accounting for about 30% of the country's mountainous area. This land is home to more than 20 ethnic groups and a city of more than 100 million people. Subway, highway and railway are the main modes of transportation for people to travel. Now, roads have become an important resource of the country, and are of great value in promoting national economic growth, improving people's quality of life, and maintaining national security. The development of roads is not only an economic need, but also an integral part of human civilization and modernization. As an important node in the road, the tunnel plays a vital role. Tunnel construction has achieved leaps and bounds in construction in recent years. Qinling Zhongnanshan Highwa...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems, the present invention develops a multi-wedge tunnel steel frame aimed at the deficiencies of the above-mentioned existing technologies, which is used to solve the problem that the support vault of a small-section tunnel is easy to collapse, and can improve the susceptibility of the section steel frame to Local concentrated loads and eccentric loads lead to defects that are easy to bend or yield. Improve the connection between the traditional wedge and the steel frame, add slow-release pads to the part connected to the foundation to absorb small deformation stress, and use light and high steel columns to reduce the self-weight of the steel frame. It is a steel frame with more comprehensive functions

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