摘要
随着近几十年交通运输事业的飞速发展,连续刚构桥凭借其经济实用、行车平顺舒适及不需要转换体系等一系列优点,成为大跨径桥梁选型里极具竞争力的桥型之一。但随着大跨径连续刚构桥的大量修建,箱梁梁体混凝土出现各种不同性质的裂缝问题,尤其是箱梁腹板的开裂。通过建立ANSYS计算模型来模拟连续刚构桥的施工节段,重点研究了竖向、纵向预应力损失对连续刚构桥腹板开裂的影响。
With the rapidly development of traffic transportation over recent decades,the continuous rigid frame bridge has became one of the highly competitive bridge in the type selection of longspan bridge due to economic and practical advantages,smooth and comfortable driving,and free of system transformation. However,with a large number of longspan continuous rigid frame bridge built,all sorts of different crack problems appeared on the concrete of box girder body,especially the cracking of box grinder web. The construction section of continuous rigid frame bridge was simulated through building the ANSYS calculation model. This paper mainly studied on the effects of loss of vertical and longitudinal prestress to the cracking in webs of continuous rigid frame bridge.
出处
《北方交通》
2015年第4期52-54,58,共4页
Northern Communications
关键词
连续刚构桥
施工中腹板开裂
敏感性因素
预应力损失
Continuous rigid frame bridge
Cracking in webs during construction
Sensitive factor
Loss of prestress
