Herringbone Prestressed Concrete Pretensioning Bridge Erection Machine and Its Application Method

Abstract

The invention discloses a herringbone pre-stressed concrete pre-tensioning-method bridge erecting machine. The herringbone pre-stressed concrete pre-tensioning-method bridge erecting machine comprises a herringbone steel frame, a pushing device, a top windlass, an I-shaped steel rail, a rail windlass, a supporting jack, a pre-stressed steel bar and an integrated bottom die; the herringbone steel frame comprises a front supporting leg set and a rear supporting leg set; the front supporting leg set comprises a second top gear, a front supporting leg, a second retractable sleeve and a slidable transverse beam, which are connected in sequence; the rear supporting leg set comprises a first top gear, a rear supporting leg, a first retractable sleeve and a fixed end anchoring part, which are connected in sequence; the fixed end anchoring part is connected with an embedded part on a first-row bridge pier; the first top gear is engaged with the second top gear; the pushing device is connected with the front supporting leg and the rear supporting leg; the slidable transverse beam is connected with the second retractable sleeve, and can slide on the I-shaped steel rail; one end of the tensioned pre-stressed steel bar is anchored at a pier top of the first-row bridge pier, and the other end of the tensioned pre-stressed steel bar is anchored on the slidable transverse beam through an anchor clamping sheet. The herringbone pre-stressed concrete pre-tensioning-method bridge erecting machine does not occupy a space under a bridge, and the construction efficiency of the bridge is improved.

Description

technical field [0001] The invention belongs to the field of bridge construction, and in particular relates to a herringbone prestressed concrete pretensioning bridge erecting machine and a use method thereof. Background technique [0002] Three-dimensional traffic is often used in the construction of modern traffic networks, which involves the construction of a large number of overpass bridges and viaducts. This type of bridge is characterized by multiple spans, high piers, and a small span (less than 50m), but limited by the scope of the construction red line, it has high requirements for construction methods, especially when the viaduct scheme is used to transform the urban road network. more demanding. There are many existing bridge erection construction methods and construction equipment, which can be generally divided into two categories: prefabricated concrete assembly construction and cast-in-place construction. The production quality of prefabricated construction ...

AI Technical Summary

Problems solved by technology

The first two methods belong to the fixed support construction method, which need to occupy the space under the bridge and need to strengthen the foundation under the bridge, and the construction process is cumbersome

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