摘要
350km/h客运专线单线后张法单箱单室预应力混凝土简支箱梁属首次应用。为验证其各项指标,进行了4榀箱梁的试验工作。重点阐述了试验箱梁的工艺试验,包括箱梁预制、混凝土强度与弹性模量的发展变化、梁体混凝土水化热、试验箱梁预应力瞬时损失、终张拉预应力效果及弹性上拱度测试、预应力的传力长度及吊梁阶段测试结果。
ABSTRACT： The post-tensioned single-box ＆ single-chamber prestressed concrete simply-supported box girder for 350 km/h dedicated passenger railway＇ s single-track line is used for the first time. To verify its performance indexes, the tests for four box-girders were carried out. This paper emphatically expounds the technological test for test box-girder including the prefabrication of box-girder, the development and change of concrete strength and elastic modulus, the hydration heat of girder-body concrete, the transient prestress loss of test box-girder, the effect of final tensioning prestress and the test for elastic camber, the transmission len^h of prestress and the test result nf hni.~tln~, ~t^m=
出处
《科技情报开发与经济》
2012年第21期131-135,共5页
Sci-Tech Information Development & Economy
关键词
试验箱梁
工艺试验
合蚌客专
test box-girder
technological test
Hefei-Bangbu dedicated passenger railway
