Construction Method of Saddle-shaped Access Road in Expressway

Abstract

The invention relates to the technical field of expressway construction. A saddle-shaped construction road building method for an expressway comprises the following steps: building a construction road of which the direction is as the same as that of an expressway roadbed on one side or two sides of the expressway roadbed to be built; for places where bridges, culverts and passageway structures are designed on the expressway, building the corresponding construction roads in a saddle shape by utilizing a bionics principle. According to the saddle-shaped construction road building method, the integrality and the construction quality of the roadbed and the road surface are effectively guaranteed, the difficulty of bridge head (behind abutments of culverts) bump is objectively solved, the blank of the world is filled up, and the advancement of the construction road building method internationally or domestically has a milestone meaning and value so as to truly overcome the inertial thinking.

Description

Technical field [0001] The invention relates to the technical field of highway construction, in particular to a method for constructing a saddle-shaped construction access road for highways. Background technique [0002] Car jumping at the bridge head (the back of the culvert) is a worldwide problem. For decades, countries all over the world have conducted in-depth research, adopted various methods and measures (to be explained later), and even adopted many new technologies. There are thousands of related documents, all aimed at solving similar problems. The problem, but ultimately because the problem is too complicated and involves many factors, it still cannot achieve the desired goal. [0003] For the reason, see figure 1 In addition to the greater impact of subjective factors, a very important objective reason that is easily overlooked by people (and even more so that people can’t notice in practice) is: (1) With the continuous filling of roadbeds, vertical The rolling method...

AI Technical Summary

Problems solved by technology

In this way, a more serious problem arises: Since these up and down ramps themselves occupy the physical part of the "roadbed", they cannot be dismantled in advance until the completion of the project. How did the slope's "gap" subgrade be dealt with? It is not difficult to imagine whether the road structure designed by the original design department can be guaranteed in these places, and how? Leaving defects is inevitable! At the same time, due to the "slope" of the opening, the difficulty of rolling by the roller is increased again (the roller at the opening cannot maintain the balance of the body, so it cannot be rolled at all)

The key lies in the fact that the research on on-site construction technology is not deep enough, ignoring the existence of objective facts that cannot be ignored, such as "blind area of ​​rolling" and "missing design structure layer caused by slope gap".

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