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美国AASHTO 2002力学经验设计指南和中国JTG D40-2011《公路水泥混凝土路面设计规范》都将连续配筋水泥混凝土路面(简称为CRCP)横向裂缝的开裂间距和横向裂缝处钢筋位置的裂缝宽度同时作为控制指标。然而,国际上对CRCP开裂行为的合理控制指标尚存在争议。该文回顾了20世纪60年代至今美国在CRCP开裂行为控制指标与水泥混凝土材料组成、纵向和横向钢筋的布设和施工条件等对开裂间距及裂缝宽度影响的关键因素方面的研究成果。
The United States AASHTO 2002 mechanics experience design guidelines and China JTG D40-2011 “Highway Cement Concrete Pavement Design Code” will be continuous reinforced concrete pavement (CRCP) transverse cracks cracking spacing and transverse cracks at the location of the crack width at the same time as Control indicators. However, there are still controversial international indicators of the reasonable control of CRCP cracking. This paper reviews the research results of the key factors that affect the crack spacing and crack width in the United States from the 1960s to the present such as CRCP cracking behavior control indicators and the composition of cement concrete materials, vertical and horizontal reinforcement placement and construction conditions.