以一座三跨(47.5+85+47.5)m并联变截面预应力混凝土连续箱梁桥为例,通过对桥梁受力特点进行分析,制定了静载试验方案,保证了试验加载效率。另外,试验得到了主要参数指标挠度、应变的相关系数,进一步验证了该类型桥梁横向受力的特点,单幅桥梁由于并联协同作用的影响,独立荷载作用下,其内力效应将被过高估计,导致实际加载效率与理论值偏差较大。 Taking a three - span (47.5 + 85 + 47.5) m parallel variable prestressed concrete continuous box girder bridge as an example, a static load test scheme was developed by analyzing the mechanical characteristics of the bridge, which ensured the test loading efficiency. In addition, the correlation coefficient between the deflection and the strain of the main parameters is obtained, which verifies the lateral force of this type of bridge. Under the influence of the parallel cooperation, the internal force effect of single bridge will be overestimated , Resulting in the actual load efficiency and theoretical deviation.