大跨径刚构一连续组合梁桥结构设计与探讨（Structural design and discussion of Long Span Rigid Frame Continuous Composite Beam Bridge）.doc

大跨径刚构一连续组合梁桥结构设计与探讨（Structural design and discussion of Long Span Rigid Frame Continuous Composite Beam Bridge） Structural design and discussion of Long Span Rigid Frame Continuous Composite Beam Bridge Abstract: This paper introduces the cloth across 138 + 240 + 240 + 240 + 138 = 996m rigid frame structure design of continuous composite girder bridge, and the case study of this type of bridge structure in scheme selection, support structure, support the main payment of the balance of power, calculation model to measure and some other problems. Key words: Large Span Rigid Frame; continuous composite beam; structural design; discussion I. Preface Compared to the long-span bridge type, the continuous beam bridge is still very competitive. The continuous beam bridge structure can be divided into continuous beam bridge, continuous rigid frame bridge and rigid frame continuous composite beam bridge. The latter is a combination of the first two, usually in a central part of a continuous beam, one hole or several holes, using pier and beam consolidation of rigid structure, the edge of several holes, lifting pier beam unity, instead of setting the continuous structure of the bearing. In the structure, it can be divided into two forms which are hinge in the main span, span in the main span, the rest of the span beam, continuous and full joint, without hinged composite beam bridge. The latter is usually called a rigid frame, a continuous composite beam. A typical example of this type of bridge has been built in China. The bridges of Dongming, the Yellow River and overseas, with larger spans, have now been tried. Two 、 structure characteristics and application of rigid frame continuous composite beam bridge 1. structural features and stress characteristics In continuous girder bridge, the pier and girder of continuous rigid frame bridge and become unity. The pier and beam forming frame bear the upper structure of the load, on the one hand, the girder is reasonable, on the othe