Integral type T-shaped outer cantilever roads and construction method thereof

Abstract

The invention discloses integral type T-shaped outer cantilever roads and a construction method thereof. The integral type T-shaped outer cantilever road comprises a vertical face concrete retaining wall and a concrete roadway slab integrated with the vertical face concrete retaining wall by pouring to form a road of which the cross section is in a T shape, wherein the vertical face concrete retaining wall is used as a boundary, an outer cantilever structure is formed on the outer side of the concrete roadway slab, an inner side roadbed positioned on a side slope is formed on the inner side of the concrete roadway slab which is anchored to the side slope through an inner longitudinal beam. In the integral type T-shaped outer cantilever roads, a cantilever roadway slab is used to complement parts where the roads are not wide through the outside; one side of a steel bar concrete roadway slab close to mountains is thickened partially to form the inner longitudinal beam which is anchored to the side slope to ensure the overturning stability resistance of an integral type T-shaped road structure; and simultaneously, the road structure has high capability of resisting earthquake action,and is suitable for earthquake-prone areas and the repair of original roads destroyed by earthquake. The integral type T-shaped outer cantilever roads avoid deep excavation, high filling, riverway occupation, scouring and erosion and reduce potential safety hazards during construction. In addition, the integral type T-shaped outer cantilever roads reduce the operating range of the construction along the height of hillsides obviously and have good comprehensive technology and economic and social benefits.

Description

technical field [0001] The invention belongs to the field of building structures and road engineering, in particular to an integral T-shaped outer cantilever road and a construction method thereof. Background technique [0002] With the rapid development of the market economy, traffic conditions have played an increasingly important role in the development of the economy. There are many mountainous areas in many provinces and regions in my country, and the construction of mountainous roads is very difficult. The original mountainous roads are low-grade roads with limited traffic capacity, which affects economic development. Therefore, it is necessary to build new roads or widen the original mountainous roads. . In the prior art, for the new construction or widening of roads in mountainous areas, it is common to cut slopes on the side of the mountain to widen, to fill soil on the side of the ditch or to build retaining walls to widen. The method of slope cutting on the side ...

AI Technical Summary

Problems solved by technology

The method of slope cutting on the side of the mountain has the disadvantages of high slope height, large engineering volume and high investment for the new construction or widening of roads in steep sections, and it may cause new collapses, new landslides and other disasters to the originally stable inner slope, and damage the natural ecology environment

The method of building retaining walls is simple for new construction or widening of roads in steep sections, and the cost is low under certain conditions, but it has the following disadvantages: the height of the retaining wall can reach tens of meters, and when it is too high, it needs to be built in different stages. The number of masonry retaining wall projects is huge, and the excavation project is large, resulting in the interruption of existing roads or great damage to the natural stability of the original slope. If the anchor cable retaining wall scheme is adopted, the cost is high and the construction is difficult

For relatively complete and stable side slopes along the river, where the outside of the slope is a river course, if the road is widened or newly widened according to the conventional design, it will not only cause large-scale landfills due to high cut slopes or high fill The safety hazards of landslides and collapses will cause damage to the natural ecological environment in mountainous areas, and will also encroach on river courses, significantly increase erosion, and cause many hidden dangers.

Images