A method for rapid maintenance of heavy-duty traffic sections at BRT stations

Abstract

The invention discloses a method for rapidly maintaining a BRT station heavy traffic road segment. The method includes the following steps that 1, in cleaning of a base plane, an original pavement layer is milled and planed thoroughly; 2, a press-in type reactive resin high-elastic concrete lower pavement layer is arranged on the base plane; 3, an OGFC asphalt mixture in the press-in type reactive resin high-elastic concrete lower pavement layer is reduced to certain temperature, and then a press-in type reactive resin high-elastic concrete upper pavement layer is laid; 4, the press-in type reactive resin high-elastic concrete upper pavement layer is smeared with high-toughness resin and reduced to certain temperature, gravel is scattered, and the traffic can be opened after the OGFC asphalt mixture in the press-in type reactive resin high-elastic concrete upper pavement layer is cooled. By the adoption of the method, construction is rapider, high-strength modified resin binder surges from the bottom so that the OGFC asphalt mixture can be filled with the high-strength modified resin binder, and a compacter effect can be achieved compared with the mode of mortar pouring; it is avoided that mortar oscillation is uneven, and filling is not compact; conventional equipment is adopted with special equipment, the anti-rut anti-pushing capacity can be improved, using comfort can be guaranteed, and separate maintaining time is not needed.

Description

Technical field [0001] The invention relates to an engineering construction method, in particular to a method for fast maintenance of a heavy-load traffic section of a BRT station. Background technique [0002] BRT originated in Curitiba, Brazil in the 1970s. It is a new type of public transport mode between rail transit and conventional public transport to solve the increasing traffic congestion problem; it occupies a small road area and has a construction period Short, low energy consumption and low pollution, effectively alleviating the heavy traffic burden. However, due to the characteristics of large, heavy, long and fixed-point BRT vehicles, almost all BRT roads in China have been caused by shear deformation and rutting diseases. , Which is mainly manifested in intersections and stations, seriously affecting driving quality and endangering driving safety. [0003] Existing repair methods are roughly divided into two types: one is partial repair, whole-piece removal, and hot-...

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Problems solved by technology

[0002] BRT originated in Curitiba, Brazil in the 1970s. It is a new bus mode between rail transit and conventional buses to solve the growing traffic congestion problem; it occupies a small road area and has a short construction period Short, low energy consumption and low pollution can effectively alleviate the heavy traffic burden. However, due to the characteristics of large, heavy, long, and fixed-point stop of BRT vehicles, almost all BRT roads in China have experienced shifting and rutting diseases caused by shear deformation. , mainly manifested in intersections and stations, seriously affecting driving quality and endangering driving safety

[0003] The existing maintenance methods are roughly divided into two types: one is partial repair, the whole block is cut off, and hot-mixed asphalt concrete is used to fill it, and the structural combination of AC16+SMA13 or SMA10+GA10 is adopted, but various degrees of damage appear soon after the repair , can only solve the problem in the short term; the second is to pave the asphalt concrete layer, using the combination of modified asphalt double-layer SMA (both fine-grained asphalt mixture), which has good tensile and shear resistance, but the cost Relatively high, different types of asphalt mixtures need to be considered during construction operations, and the amount of maintenance work is relatively small, which increases the difficulty of production control of the mixing plant; double-layer epoxy asphalt concrete is used, the thickness of the overlay is relatively thin, and the pavement It has high shear and pull-out strength, good durability and low-temperature performance, but it is difficult to construct, requires a professional construction team to construct, and requires a certain period of health care and traffic interruption; therefore, research on an economical The pavement combination structure that is applicable and can quickly repair BRT diseased pavements has great practical and economic significance. It can not only save resources and reduce engineering costs, but also restore pavement performance, maintain driving safety, and prolong the service life of pavement

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