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Application of External Prestress to Strengthening of a Continuous Rigid Frame Bridge and Effect Analysis
Author(s): 
Pages: 48-51
Year: Issue:  12
Journal: RAILWAY STANDARD DESIGN

Keyword:  体外预应力连续刚构加固;
Abstract: 以体外预应力在某连续刚构桥加固中的应用为例,介绍体外预应力筋在上部结构箱梁中的布置形式、锚固和转向的方式以及张拉方法.通过对箱梁结构的竖向位移和混凝土应力的监测,分析该桥体外预应力加固的效果.结果表明,体外预应力增加了结构的压应力储备,改善了箱梁混凝土的应力状态,对结构的补强起到了一定的效果.
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