ENVIRONMENTALLY FRIENDLY ENLARGED TUNNEL WITH INTEGRATED BRIDGE SUBSTRUCTURE AND TUNNEL PORTAL AND CONSTRUCTION METHOD THEREOF

摘要

The present invention provides an environmentally friendly enlarged tunnel with a bridge substructure and a tunnel portal, integrated with each other, and a construction method thereof. The environmentally friendly enlarged tunnel with the integrated bridge substructure and tunnel portal can perform environmentally friendly, economical, and rapid construction and solve a large-scale slope cutting problem around a portal due to additional construction of a bridge substructure on topography of a steep slope when a bridge structure connected to the tunnel portal constructed on the topography of the steep slope is constructed. The environmentally friendly enlarged tunnel with the integrated bridge substructure and tunnel portal, in which the tunnel portal and the bridge substructure including a tunnel start point unit (C1) formed on the topography of the steep slope are integrated, includes: the tunnel portal constructed to correspond to the width of the transverse direction of the bridge substructure including an abutment unit; and the bridge substructure including the abutment unit integrated with the bottom of the tunnel portal enlarged by excavating the inner lower ground of the enlarged tunnel portal. As an upper structure of a bridge is installed on the bridge substructure, a bridge structure is positioned in the tunnel portal enlarged from the tunnel start point unit (C1) formed on the topography of the steep slope.;COPYRIGHT KIPO 2020