为使公路桥设计更能适应发展趋势，通过参考英、美两本新桥规，提出所需明确的6个问题：①常规和特殊活荷载；

For improving our highway bridge design, the authors refer to two new specifications from UK and USA, and raise 6 problems for discussion:1. Normal and special traffic live loading;

youdao

为使公路桥设计更能适应发展趋势，通过参考英、美两本新桥规，提出所需明确的6个问题：①常规和特殊活荷载；

For improving our highway bridge design, the authors refer to two new specifications from UK and USA, and raise 6 problems for discussion:1. Normal and special traffic live loading;

youdao