Method for rolling transition section of rigid structure of rapid transit railway

Abstract

The invention discloses a method for rolling a transition section of a rigid structure of a rapid transit railway. The method comprises the following steps of: (1) laying a to-be-rolled layer; (2) rolling the to-be-rolled layer in a predetermined distance away from the side wall of the structure by adopting a small machine, and rolling the residual to-be-rolled layer by adopting a large machine; and (3) compacting the to-be-rolled layer, and then repeating the steps (1) to (2) to roll the next layer, wherein the step (2) comprises processes of: performing static pressure or weak vibration rolling on the to-be-rolled layer in 0.5 meter away from the side wall of the structure by adopting a road roller of below 5t, and rolling the residual to-be-rolled layer by adopting a road roller of over 18t. The method can improve the construction efficiency at the same time of ensuring the rolling quality.

Description

technical field [0001] The invention relates to the technical field of high-speed railway embankment construction, in particular to a rolling method for a transition section of a high-speed railway rigid structure. Background technique [0002] The construction of the existing high-speed railway is mainly implemented according to the regulations in the high-speed railway design specification [TB10621-2009J971-2009]. The code stipulates that the embankment of the transition section should be constructed at the same time as the embankment it connects, and should be filled in layers at approximately the same height. Within 2 meters from the side walls of structures, bridges, culverts, etc., use small machines to compact and properly reduce the layered filling thickness to avoid damage to structures, and use large machines for rolling within 2 meters. . In addition, for horizontal structures such as culverts, the fillers on the top are rolled by small machines. [0003] As we...

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Problems solved by technology

[0003] As we all know, the degree of compaction of the compacted part of the small machine tool is limited, and the compactness degree of the rolled part of the small machine tool and the part of the large machine tool is very different. When the train passes by, the parts with different densities will superimpose the dynamic response, which will affect the train. Especially the smooth passage of high-speed trains reduces the service life of the roadbed

In addition, the use of small machines for rolling in a large area will reduce construction efficiency and affect construction progress

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