Construction method of single-pylon cable-stayed bridge without dorsal cables

Abstract

The invention discloses a construction method of a single-pylon cable-stayed bridge without dorsal cables. The construction method comprises the following steps of: (1) preparation before construction; (2) lower bridge structure construction; (3) upper bridge structure construction, which comprises the following construction processes of: lower pylon concrete pouring construction, lower beam construction, middle pylon segmental pouring construction, alternate segmental pouring construction of an upper pylon and a middle suspension cable beam segment and stayed-cable mounting, wherein an integral lifting template is used for segmental construction on both the middle pylon and the upper pylon; and (4) bridge surface system construction. The construction method has reasonable step design, convenient construction, safe and reliable construction, high construction quality, short construction period and less and simple construction hardware equipment and can effectively overcomes the defects and deficiencies of complicated construction process, difficult guarantee of construction quality, various hardware equipment needed, and the like in the construction process of the single-pylon cable-stayed bridge without dorsal cables.

Description

technical field [0001] The invention belongs to the technical field of cable-stayed bridge construction, and in particular relates to a construction method of a single-tower cable-stayed bridge without back cables. Background technique [0002] Daijiawan Weihe Bridge in Baoji City is located in the east of Baoji City, Shaanxi Province, the ancestor of China and the hometown of Emperor Yan. It is one of the "four horizontal and ten vertical" main road network frameworks in Baoji City. It is a landmark building that integrates functions and landscapes. , The bridge construction process is complicated and the technical content is high. [0003] Daijiawan Weihe Bridge in Baoji City is 1146 meters long, and the span combination: 10×20 meters (hollow slab girder) + 127 meters (cable-stayed bridge) + 16×32 meters (large hole slab beam) + 127 meters ( Cable-stayed bridge) + 9×20 meters (hollow slab girder), the main bridge is a single-tower cable-stayed structure without back cable...

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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a construction method for a single-tower cable-stayed bridge without back cables in view of the deficiencies in the above-mentioned prior art. The construction period is short, and the hardware equipment used in the construction is less and simple, which can effectively solve many defects and deficiencies in the construction process of the single-tower cable-stayed bridge without back cables, such as complex construction technology, difficulty in guaranteeing construction quality, and a large number of required hardware equipment.

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