Super large pier tie rod and foundation structure

Abstract

The invention relates to an oversized pier-position pull rod and foundation structure, comprising a pull rod, a pull rod upper lifting lug, a pull rod lower lifting lug, a pull rod cross beam, a reinforcing rib and a pull rod foundation, wherein the upper lifting lug is connected with a main beam, the lower lifting lug is connected with a lower bearing platform, a pile foundation is arranged below the lower bearing platform, and the pull rod is connected with the upper part and the lower part of a bridge through dowels. The pull rod and the foundation are arranged at a side span of an arch bridge, so that vertical counter forces of the side span are directly balanced, and the negative counter forces of abutment piers are avoided. An abutment pier support is changed into a common compression support from a tensile support, so that subsequent support replacement is facilitated, and the time and the expense for replacing the support are reduced. Through adopting the oversized pier-position pull rod and foundation structure, the span of the side span is reduced, the bending moment and the shearing force of the side span are lowered, the design difficulty of the side span is lowered, and the engineering cost of the side span and the main beam is reduced. The oversized pier-position pull rod is arranged in the transverse direction of the bridge according to the overall width of the bridge, so that the restriction force of the bridge in the transverse direction of the bridge is stronger, the distribution of a natural vibration mode of the bridge is changed, and the occurrence of a torsional mode is retarded.

Description

technical field [0001] The invention relates to a super large pier tie rod and a basic structure. Background technique [0002] In bridge construction, arch bridge, as one of the most basic structural systems, has unique charm. Among the modern arch bridges, Feiyan arch has received more and more people's favor. Affected by terrain, surrounding building conditions or architectural beauty, Feiyan Arch Bridge generally has a large main span and relatively small side spans to achieve good architectural effects. This makes the span layout of the arch bridge out of balance, and negative reaction forces are prone to appear at the side span buttresses. The occurrence of negative reaction forces at side piers is difficult for bridge design to deal with. Negative reaction force appears on the side span. If the tensile support scheme is adopted, the service life of the support is much shorter than the design life of the bridge, and it will be difficult to replace the support in the...

AI Technical Summary

Problems solved by technology

The negative reaction force of the side span is usually solved by ballast, but because the side span is relatively short and the beam height is limited, it is difficult to solve the problem of negative reaction force of the side span by ballast under the most unfavorable load condition

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