Reinforced concrete frame abutment shallow pile plate foundation under two-driveway beam type cross connecting beam

Abstract

The invention discloses a reinforced concrete frame abutment shallow pile plate foundation under a two-driveway beam type cross connecting beam, which comprises a reinforced concrete plate foundation and reinforced concrete shallow piles, wherein the reinforced concrete shallow piles are connected with the plate foundation and supports the plate foundation; the shallow piles are two symmetrical rectangular shallow piles; a frame of the plate foundation is formed by crosswise arranging two longitudinally reverse suspending beams and three transversely reverse suspending beams; the periphery of the longitudinally and transversely reverse suspending beams and a closed contact beam are connected into a whole. The rectangular shallow piles meet the requirement on stability according to the design reference that a variable load generates horizontal thrust and is not upwards drawn; the load of the pile foundation is increased by the auxiliary function of the plate foundation; the piles are short and pits are shallow to be convenient for construction; meanwhile, cement and reinforcing steel bar raw materials are saved; compared with a cylindrical or rectangular entity foundation, the raw material can be saved by 35 percent; the longitudinal length of the shallow piles can be increased under the condition of unchanged distance between the two shallow piles to increase the area of the shallow piles, thereby achieving the aim of increasing the loading force of the pile foundation and being capable of solving the problem of separation of the bottom surface of a support platform 7 and foundation soil and carrying the foundation with same vertical load.

Description

Technical field: [0001] The invention relates to a bridge construction component, in particular to a shallow pile slab foundation for a reinforced concrete frame pier abutment under a two-lane beam-type cross-link beam with a width of 6-6.5 meters and a height of 10 meters. Background technique: [0002] With the construction of a network of first-class roads, second-class roads, ordinary roads and expressways, the erection and construction of bridges is also increasing rapidly. The design and construction of the reinforced concrete frame abutment foundation under the bridge span connection is also continuously improved. The current structural shape of the reinforced concrete frame abutment foundation generally adopts a separate solid cylindrical pile or a solid rectangular pile. The cylindrical pile foundation supports The maximum area is large and stable, but its disadvantages are: it is a solid pier that needs a certain depth, resulting in waste of raw materials such as c...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of waste of raw materials and high difficulty in construction of the cylindrical reinforced concrete foundation of the pier under the two-lane girder type cross-link beam, the purpose of the present invention is to provide a bridge pier that can not only ensure the load-bearing of the bridge pier, but also make the application safe and structural. Low-material-saving and easy-to-construct two-lane beam-type cross-link girders with reinforced concrete frame pier shallow pile slab foundation

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