摘要
本文总结了在设计、施工和顶推两个大型高度倾斜的后张混凝土梁板中发现的主要问题,两块梁板倾斜度高达61°,且有创记录的垮厚比;每块板长50m、宽20m,厚0.8m,这样的厚度是为了保证下穿的铁路线有足够的桥下净空。为加固梁板,沿自由边加装了形状如防撞护栏的横向边梁。
In this paper problems are summarized which are found in the design,construction and pushing of two large and highly inclined post- tensioned concrete beam slabs. Two pieces of beam slab tilt up to 61 degrees with the record breaking thickness ratio; each plate is 50 meters long,20 meters wide,and 0. 8 meters thick. The thicknes ensure enough clearance under the bridge for beneath railway line. In order to reinforce the beam slab,lateral boundary beamthe is added along the free edge,whose shap likes a crash barrier.
出处
《内蒙古公路与运输》
2016年第2期33-35,共3页
Highways & Transportation in Inner Mongolia
关键词
桥梁设计和施工
倾斜
梁板
后张预应力
顶推
概念设计
bridge design and construction
incline
beam slab
post-tensioning prestressing
pushing
conceptual design
