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

A super-altitude and hollow technology, applied in bridges, bridge construction, bridge parts, etc., can solve the problems of increase and increase of project cost, and achieve the effect of reducing project cost, feasibility of construction, and coordination of proportion and scale

Active Publication Date: 2009-12-09
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] refer to figure 1 , the super-high hollow pier of the long-connected, long-span continuous structure bridge of the present invention includes a pier body and a cap abutment consolidated therewith, and the lower section 20 of the pier body consists of two supporting legs 21, 22 and a horizontal pier consolidated therewith. The tie beam 23 is formed, and its front projection is A-shaped; the upper section 10 of the pier body and the supporting legs 21, 22 adopt hollow sections.

[0018] refer to figure 2 , the upper section 10 adopts a rectangular hollow section with a transverse circular arc surface, which is similar to the section of a traditional hollow pier. refer to image 3 , the legs 21, 22 adopt a transverse arc-shaped rectangular hollow section, but the slope of the legs can be streamlined due to rigidity and aesthetic requirements. T...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/02
Inventor 陈思孝李锐陈克坚吴再新刘挺鄢勇袁明
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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