梁拱组合体系连续梁转体桥设计与施工特点

云黎大桥是京杭运河苏南段整治工程中的一座桥梁，主桥35m＋75m＋35m，桥型为上承式连续梁三跨梁供组合体系桥。两端引桥各为2×20m＋3×20mT型连续梁桥。该桥特点是采用适应苏南软土地区的地质条件，将拱的水平推力由设置于加劲梁中的预应力来承担，由此组成的梁拱组合体系。桥梁施工沿河岸浇筑，转体合拢，不影响通航，工艺简单，施工设备少，造价低．外形流畅美观。本文主要介绍该桥的设计与转体施工概况，以及实测的主要成果分析。

Design and Construction Characteristics of Beam-Arch Combination System Continuous Beam Bridge by Rotary Construction Method

YunLi Bridge is a bridge in SuNan Section Treatment Project of the Jing-Hang Canal.The main bridge has the span of 35 m+75 m+35 m. The bridge type is the three-span beam-archcombined system bridge of deck continuous beam. The approcaches at two ends are T-continuousbeam bridge of 2×20m+3×20 m,respectively. The bridge has a characteristics which is suitableto the geological conditions of SuNan soft soil area,and the horizontal thrust of the arch will beborne by the prestressed tendons in the stiffened beam, thus composing a beam-arch combinedsystem. The bridge will be cast along the river bank and will be closed by rotary constructionmethod so as to not affect the navigation with a simple process,less construction equipment,lowercost and beautiful appearance. The paper mainly introduces the general situations of the designand construction by rotary construction method as well as the main result analysis of the actualmeasurement.