Arranging construction method of subway narrow shield well inclined hoisting rail

Abstract

The invention discloses a construction method for inclinedly and downward hoisting a track panel of a narrow shield well of a subway, which comprises the following steps: (a) a shield well is selected according to the length of the track panel; and (b) a left gantry crane and a right gantry crane are adopted to inclinedly and downward hoist the track panel through a track panel hoisting device respectively, wherein 1. after the horizontal hoisting, the left gantry crane and the right gantry crane synchronously move to the position above a feed opening from left to right; 2. the left gantry crane is still, and the right gantry crane travels toward the left and synchronously ensures that a large hook of the right gantry crane descends to cause the track panel to have an inclination angle of alpha; 3. the two gantry cranes synchronously move toward the right, and large hooks simultaneously descend; 4. the two gantry cranes continue moving synchronously toward the right, and the large hooks simultaneously descend; 5. the two gantry cranes move toward the right, and the running speed of the left gantry crane and the descending speed of the large hook of the left gantry crane are greater than those of the right gantry crane; and 6. the right gantry crane is still, and the large hook of the left gantry crane descends when the left gantry crane travels toward the left. The construction method has simple working procedures, simple and convenient operation, low construction cost, and high efficacy, and can effectively solve the construction problem of inclinedly and downward hoisting the track panel in the narrow shield well.

Description

technical field [0001] The invention relates to the technical field of subway construction, in particular to a method for constructing a subway narrow shield shaft with inclined suspension rail rows. Background technique [0002] In railway construction, especially in the construction of urban subway or light rail, due to the high technical content and complicated procedures and processes, in order to speed up the construction progress, the construction of multiple track laying bases is often adopted for construction. Except for steel spring floating slabs and trapezoidal sleepers, which need to build special track laying bases due to their special technology, other track laying bases need to install gantry cranes or other types of lifting equipment in the site, and also need to set up in the site Nail connection line, after assembling the existing 25-meter steel rail into a standard 25-meter rail row, use 2 door cranes to hoist it to the discharge port and finally drop it t...

AI Technical Summary

Problems solved by technology

[0003] However, due to the particularity of urban railway construction, it is often necessary to pass through the hinterland of the city, where the population is dense and the site is small, which is greatly restricted by the environment and site of the downtown area. In addition, the civil engineering unit generally does not reserve special rail row blanking materials during construction. Therefore, in the actual construction of the track laying unit, the skylight of the platform, the shield shaft or the open-cut shaft is often used as the discharge port of the rail row, but the condition of the discharge port is not good, and sometimes the size of the discharge port is <25m, which cannot To realize the overall oblique hoisting of the standard 25m rail row into the lower hole, the only way is to use the hanging rail to clamp the single rail lower hole, and nail the rail row in the hole or saw the standard 25m rail into a 12.5m short rail and then nail it into a short rail These methods all have disadvantages such as low work efficiency, high labor intensity, many construction workers, increased transportation volume, increased grinding volume, and increased safety hazards. Therefore, there are deficiencies in the currently used construction methods, which are affected by many factors. Restrictions and influences, and at the same time will inevitably increase construction costs

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