Construction method for reinforcing railway embankment with horizontal reinforced soil-cement piles

Abstract

The invention discloses a construction method for reinforcing a railway embankment with horizontal reinforced soil-cement piles. The method includes the sequentially-implemented steps of construction preparation, drilling and position, I-beam work platform setting up, construction equipment debugging and checking, horizontal rotary jet grouting drill rig alignment and leveling, horizontal lead hole drilling, horizontal rotary jet grouting file-forming, I-beam insertion, machine and tool washing and top beam construction. By the construction method, the horizontal rotary jet grouting pile-forming method is adopted, construction difficulty of the horizontal reinforced soil-cement piles is lowered effectively, and the relative position for pile-forming of the reinforced soil-cement piles can be ensured effectively; by the method of I-beam insertion, I-beams are prevented from self deflection deformation in the process of being inserted into the soil-cement jet grouting piles, and construction quality of railway embankment reinforcement by the horizontal reinforced soil-cement piles is improved remarkably.

Description

technical field [0001] The invention belongs to the technical field of construction methods for strengthening railway embankments, and in particular relates to a construction method for reinforcing railway embankments with horizontally reinforced cement-soil piles. Background technique [0002] With the continuous development of high-speed railways and heavy-duty railways, long-term operation of railway embankments will produce a certain amount of settlement deformation, and this deformation will continue to accumulate. When the deformation exceeds a certain level, it will affect driving safety. Therefore, it is necessary to strengthen the embankment that has a tendency to settle and deform. [0003] At present, the use of horizontally reinforced cement-soil piles to strengthen railway embankments does not affect the operation of the line, and has a great application prospect. At present, the construction process of horizontally reinforced cement-soil piles to strengthen ra...

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Problems solved by technology

In such a construction process, if the high-pressure rotary grouting construction is directly used, the construction is difficult, the quality of the pile is not easy to guarantee, and the cement-soil rotary grouting piles formed often deviate from the design orientation; secondly, the I-beam is directly inserted into the uncured cement In the soil rotary grouting pile, the relative position of the I-beam and the cement-soil rotary grouting pile is not easy to control, and the reinforcement equipment with a large horizontal thrust is required. Even if the reinforcement equipment with a large horizontal thrust is used, the reinforced material often cannot At the same time, because the I-beam is relatively slender, it is very easy to produce a certain deflection deformation during the process of inserting the cement-soil rotary grouting pile, resulting in one end of the I-beam directly penetrating through the side surface of the cement-soil rotary grouting pile. When inserted into the embankment, regular reinforced cement-soil piles cannot be formed, which seriously affects the effect of embankment reinforcement

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