无缝桥梁CRCP接线路面室内试验研究

Laboratory Research on CRCP Approach Pavement of Jointless Bridges

连续配筋混凝土路面(CRCP)自身有带裂缝工作的特点,将其与无缝桥梁技术相结合,针对中小整体式无缝梁桥,提出了采用CRCP接线路面来吸纳无缝桥梁收缩变形的新措施。同时结合西部交通建设科技项目"无缝化技术在西部地区中小跨径桥梁上的应用研究"课题,进行了室内足尺模型试验,并且在主动裂缝控制的效果、裂缝宽度发展规律以及纵向钢筋应力发展规律等几方面,取得了一些初步研究成果。

The continuously reinforced concrete pavement（CRCP） has its own characteristics of working with cracks,which can be combined with the jointless technology.Based on this,we propose a new measure to absorbe the shrinkage deformation of the bridge through the approach pavements in small and middle integral jointless bridges.Combined with the topic of the jointless technology in small and middle bridge in western China,an indoor model test was implemented.And some experimental results have been yielded from the following aspects： application of active crack controlling,the law of crack developing,and the law of the stress in steel bars and Concrete.