Inclined leg column plate combined pier suitable for highway-railway dual-purpose bridge and construction method

Abstract

The invention relates to an inclined leg column plate combined pier suitable for a highway-railway dual-purpose bridge. The pier comprises a plurality of bored piles, a bearing platform, an inter-column connecting partition plate, inclined leg columns and a transverse tie beam, the bored piles are arranged in the vertical direction, the bearing platform is installed and supported on the bored piles, the number of the inclined leg columns is two. The two inclined leg columns are installed on the left side and the right side of the bearing platform respectively and are in bilateral symmetry withthe center line of the pier as the benchmark, the transverse distance between the two inclined leg columns is gradually increased from bottom to top, namely the upper portion is wide and the lower portion is narrow, and the inter-column connecting partition plate is arranged between the two inclined leg columns. The transverse tie beam is arranged at the upper ends of the inclined leg columns andconnected between the two inclined leg columns. The pier is attractive in overall landscape, beneficial to reduction of the size of a bearing platform and the excavation amount of a foundation pit, obvious in economic benefit, attractive and novel in structure and good in water flow adaptability, the water blocking ratio is effectively reduced, and the flood prevention and discharge capacity is improved.

Description

technical field [0001] The invention relates to the field of bridge engineering, in particular to a bridge pier with inclined-leg column-slab composites suitable for highway-rail dual-purpose bridges and a construction method. Background technique [0002] At present, the existing road-rail dual-purpose piers are mostly built on large rivers, and the main problems are as follows: [0003] 1. Conventional road-rail dual-purpose piers generally have a large lateral width due to the superstructure structure and support layout, and are often designed as solid or digging gravity piers. Although this kind of bridge pier has good integrity and large bearing capacity, it has a bulky and heavy appearance, which is not suitable for areas with high aesthetic requirements, and is not conducive to saving the amount of materials such as concrete and steel bars. On the other hand, the huge pier body results in relatively large water resistance and poor adaptability to water flow, which is...

AI Technical Summary

Problems solved by technology

Although this kind of bridge pier has good integrity and large bearing capacity, its appearance is bulky and heavy, and it is not suitable for areas with high aesthetic requirements, and it is not conducive to saving the amount of materials such as concrete and steel bars.

On the other hand, the huge pier body causes relatively large water resistance and poor water flow adaptability, which is not conducive to flood control and flood discharge

[0004] 2. The lateral width of the pier bottom of the traditional road-rail dual-purpose solid gravity bridge pier is relatively large, resulting in a large cap size, which increases the excavation volume of the foundation, and also increases the amount of materials and the internal force of the cap bottom, which affects the load of the foundation. Higher force requirements, longer pile foundation length, and poor economic benefits

[0005] For the gravity piers of the general road-rail dual-purpose bridge, there are some problems: the size of the piers and caps is large, the amount of materials is high, the structure is heavy, and it is not conducive to the appearance and flood control.

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