Ultrahigh hollow pier for long coupling and large span continuous structure bridge

Abstract

The invention discloses an ultrahigh hollow pier for a long coupling and large span continuous structure bridge, aiming at greatly saving the quantity of masonry of piers in the premise that the integral safety is ensured. The ultrahigh hollow pier comprises a pier body and a support platform (30) fixedly connected with the pier body, wherein, the lower section (20) of the pier body comprises support legs (21) and (22) and a transverse beam (23) fixedly connected with the support legs, and the front projection thereof forms an A shape; and the upper section (10) and the support legs (21) and (22) are provided with hollow sections. The invention has the advantages that the structural configuration is harmonious, the rigidity distribution meets the requirement of variation of pier height on pier rigidity, the stress is reasonable, and the force transmission is clear; the safety and the reliability are high, and indicated by the result of calculation, the integral safety of the structure can be completely ensured during construction phase and bridge built operation phase; the pier configuration is shapely, the construction is feasible, economic and reasonable, and under the circumstance of ensuring the longitudinal and transverse rigidity, the quantity of masonry of pier can be saved by more than 30 percent, thereby obviously reducing the engineering cost.

Description

technical field [0001] The invention relates to a bridge pier, in particular to a super-high hollow pier applied to a long-connected, long-span continuous structure bridge of a high-speed railway. Background technique [0002] With the rapid development of transportation, large-span bridges across rivers and canyons will inevitably emerge in large numbers. Due to the extremely complex geological and landform characteristics of railway construction in western my country, various unfavorable geology and steep slope canyons emerge in endlessly, and long-span long-connected structures and super-high piers will be inevitable. [0003] At present, the railway bridge with the largest pier height in China is the Dukou River Bridge on the Yiwan Railway, with a design speed of 160km / h. 128m, with a broom-shaped hollow pier; the largest-span railway rigid-frame bridge is the Niujiaoping Bridge on the Xiangyu Line, the main bridge is (100+192+100)m prestressed concrete upper continuous...

AI Technical Summary

Problems solved by technology

[0004] It can be seen that with the increase of the speed and the height of the long-span high pier, the amount of concrete used for the pier body will increase geometrically in order to meet the dynamic performance of the bridge when the traditional design of the broom-shaped hollow high pier structure is adopted. The cost of the project will increase substantially

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