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首页> 外文会议>Conference on Connections Between Steel and Concrete Vol.2 Sep 10-12, 2001 Stuttgart, Germany >EXPERIMENTAL STUDY ON A NEW JOINT FOR PRESTRESSED CONCRETE COMPOSITE BRIDGE WITH STEEL TRUSS WEB
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EXPERIMENTAL STUDY ON A NEW JOINT FOR PRESTRESSED CONCRETE COMPOSITE BRIDGE WITH STEEL TRUSS WEB

机译：钢桁梁预应力混凝土复合桥新节点的试验研究

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摘要

A composite truss bridge has been developed that comprises concrete upper and lower slabs and steel truss as the web. This structure rationalizes structural performances, reduces weight and labor costs. A structure is proposed to simplify the cantilever construction, and to utilize both steel and concrete effectively to realize a new composite joint structure for a composite truss bridge, This joint structure is achieved by inserting the diagonal tubular steel into a box-shaped steel structure called a steel BOX made from welded perforated steel plates. The force flow in this joint structure was expected to be complicated. Therefore, static destructive tests were carried out using scale models to conceive their force propagation conditions and ultimate strengths, and to obtain basic data for designing. These tests confirmed that the force was propagated in the steel BOX until shear cracks occurred at the joint. At this point, re-bars in the joint carried some of the forces. It was thus confirmed that varying both quantity and placement of re-bars could control the ultimate strength at the joint.
机译：已经开发出一种复合桁架桥，其包括混凝土上下平板和以钢桁架为腹板的腹板。这种结构使结构性能合理化，减轻了重量并降低了人工成本。提出了一种结构，以简化悬臂结构，并有效地利用钢和混凝土，以实现用于复合桁架桥的新型复合节点结构。该节点结构是通过将对角管状钢插入到称为箱形的钢结构中来实现的。由焊接的穿孔钢板制成的钢制盒子。预计该接头结构中的力流会很复杂。因此，使用比例模型进行了静态破坏性测试，以了解它们的力传播条件和极限强度，并获得用于设计的基本数据。这些测试证实了力在钢制BOX中传播，直到接头处出现剪切裂纹为止。此时，关节中的钢筋承受了一些力量。因此证实，改变钢筋的数量和位置都可以控制接缝处的极限强度。

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