Tunnel pre-stressed restrained filling lining support system with yielding and energy-absorbing functions and technology

Abstract

The invention discloses a tunnel pre-stressed restrained filling lining support system with yielding and energy-absorbing functions and a technology. The system includes multiple restrained filling lining bodies arranged along the circumference of a tunnel, and restrained yielding sleeves are connected between the restrained filling lining bodies. Each restrained filling lining body includes a restrained shell which has a filling body inside. Pre-stressed anchor bolts are installed in a penetrating manner along the outer arc surface and the inner arc surface of each restrained shell. A numberof anchor rope holes are arranged in the inner arc surfaces of the restrained shells. The pre-stressed anchor bolts are installed in a penetrating manner in the anchor rope holes by self-locking yielding trays. The pre-stressed anchor bolts are applied with a pre-stress and can produce radial compression on the restrained shells and the inner filling bodies thereof so that the pre-stressed anchorbolts, the restrained shells and the filling bodies constitute a composite bearing shell together. When the pressure on the external surrounding rock of the tunnel exceeds the yielding value set by the restrained yielding sleeves and the self-locking yielding trays, the whole lining support system can realize yielding and energy absorbing along the circumferential and radial directions of the tunnel.

Description

technical field [0001] The invention relates to the technical field of tunnel support, in particular to a tunnel prestressed constrained filling lining support system and technology capable of allowing pressure and energy absorption. Background technique [0002] At present, with the acceleration of the modernization process of cities around the world, the pressure on urban ground transportation is increasing, and problems such as traffic congestion and environmental pollution are becoming more and more prominent, which have brought many adverse effects on people's quality of life. In this context, by building various tunnels or underground projects (urban subways, highway tunnels, railway tunnels, underwater tunnels, municipal tunnels, etc.), surface resources can be saved, and environmental protection and energy saving are effective solutions to alleviate the above problems. one of the ways. Moreover, with the development of today's economy and technology, the number and ...

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Problems solved by technology

[0011] In view of the cumbersome construction process, slow construction progress, untimely support of surrounding rocks, failure to absorb energy, high support cost, high labor intensity, easy cracking and damage, and difficult to accurately control the construction quality in the traditional series of support methods for tunnels and a series of problems such as the deterioration of the working environment, the present invention proposes a tunnel prestressed restraint filling lining support system and technology that can allow pressure and energy absorption, which realizes the assembly construction of the tunnel support structure and avoids the on-site construction of the support structure. During the construction process, the labor intensity of support construction is reduced, and the construction progress of the tunnel and the quality of support construction are improved. The internal strain energy of the rock makes the support system moderately deformed to reduce support costs; in addition, it can effectively avoid cracking and damage of conventional concrete supports, improve the overall strength of the support system, and reduce the weight of support components, avoid component corrosion, and be environmentally friendly and efficient. and other advantages

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