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首页> 外文会议>17th Annual Interantional Bridge Conference and Exhibition; Jun 12-14, 2000; Pittsburgh, Pennsylvania, USA >Segmental Structure with Replaceable CIP Deck Slab
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Segmental Structure with Replaceable CIP Deck Slab

机译：带可更换CIP甲板板的分段结构

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摘要

Precast segmental technology allows a fast and a very efficient construction of bridges. Bridges with spans up to 40 m are usually erected span-by-span. The segments are assembled on the erection truss and are post-tensioned by external tendons anchored in pier segments - see Figs.1a and 2a. Bridges of larger spans are usually erected in balance cantilevers that start above the piers; during the erection the segments are post-tensioned by internal cantilever tendons -see Fig.1b1. After casting the mid-span joint continuity external tendons are post-tensioned- see Figs. 1b2 and 2b. A box girder with overhangs usually forms the deck of segmental structures;. the deck seldom has a double tee or channel section.
机译：预制分段技术可以快速高效地建造桥梁。跨度最大为40 m的桥梁通常是跨度竖立的。这些节段组装在安装桁架上，并通过锚固在墩节段中的外部筋进行后张拉-见图1a和2a。大跨度的桥梁通常竖立在桥墩上方的平衡悬臂中。在勃起过程中，节段由内部悬臂肌腱后张-见图1b1。铸造中跨关节连续性后，外部肌腱被后张紧-见图。 1b2和2b。带有悬挑的箱形梁通常形成分段结构的甲板。甲板很少有三通或三通部分。

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