论文部分内容阅读
基于有限元分析方法和差分分析方法,对预应力混凝土连续箱型梁桥的腹板竖向预应力作用下的应力场进行了分析,并与现行设计方法进行了比较,指出了腹板开裂的主要原因.分析表明腹板竖向预应力大小不能按现行桥梁设计规范进行设计.为指导砼箱梁桥设计和防治砼箱梁桥开裂,修改有关设计规范提供了理论依据.图12,表2,参5.
Based on the finite element analysis method and the differential analysis method, the stress field under the prestressing force of webs of prestressed concrete continuous box girder bridge is analyzed and compared with the current design method. The main reason is that the analysis shows that the vertical prestressing of web can not be designed according to the current bridge design code, which provides the theoretical basis for guiding the design of concrete box girder bridge and preventing the cracking of concrete box girder bridge and modifying the relevant design specifications. Participation 5.