for tunnel openingsfor functional structures

Abstract

The invention provides a functional structure for a tunnel opening. A panel structure is arranged at the opening section of the tunnel. The panel layer of the panel structure covers the outer wall of the opening section, and the surface of the concrete lining between the panel layer and the opening section A cavity structure is formed between them, and the cavity structure communicates with the inner hole section. A plurality of longitudinal pipes along the longitudinal direction of the tunnel are fixed on the surface of the concrete lining, and ring pipes are arranged between the longitudinal pipes; a flow gap is provided between the ring pipes and the surface of the concrete lining; between the longitudinal pipes and the ring A panel layer is fixed on the pipe. By adopting the structure of longitudinal tube, circumferential tube and panel layer, a layer of cavity structure can be formed on the surface of the concrete lining. The cavity structure can prevent the surface of the concrete lining from being directly blown by the wind, and can use the cavity structure to form a temperature buffer. Thereby reducing the temperature gradient change of the concrete lining structure and protecting the surface of the concrete lining.

Description

technical field [0001] The invention relates to the field of railway and highway tunnel construction, in particular to a functional structure for tunnel openings with the functions of heat preservation, prompting, visual adjustment and decoration. Background technique [0002] With the development of the expressway, it began to extend to the northern alpine region, and the number of tunnel projects in the alpine region began to increase year by year. Tunnel insulation is the top priority of tunnel construction in the northern alpine region. The large temperature difference between day and night makes the concrete lining surface of the tunnel mouth prone to cracks, causing safety hazards and unsightly appearance. Power supply is relatively difficult in tunnel engineering in alpine regions. When coming out of the tunnel, the driver is prone to "flash blindness" due to the sharp change of light inside and outside the tunnel, and safety accidents are prone to occur. Chinese pat...

AI Technical Summary

Problems solved by technology

However, this solution is not applicable in areas where power supply is difficult, and the construction and operation costs are also high

CN205013018U has recorded a kind of waterproof insulation layer construction structure of tunnel entrance section in alpine region, has adopted the mechanism of geotextile, waterproof board, insulation board and support, realized the insulation of concrete, but this scheme construction procedure is comparatively loaded down with trivial details, and construction efficiency is low, and cost is high

However, in practical applications, the efficiency of photovoltaic power generation is low, usually only 8% to 11%, and the data currently known in the laboratory is only 17%. , requiring a lot of photovoltaic array power generation units, resulting in high construction costs and not practical

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