道路与桥梁专业英语课后句子.docx

第四课课文
This force prevents the cracks from developing by eliminating or considerably reducing the tensile stresses at the critical sections at services load, thereby raising the bending, shear and torsional capacities of the sections.
这种力能消除或大大减少使用荷载在跨中及支座等临界截面处产生的拉应力，阻止裂缝出现，从而提高截面的抗弯、抗剪和抗扭能力。
Although it might appear that the blocks will slip and vertically simulate shear slip failure, in fact they will not because of the longitudinal force P.
虽然看起来好像块体会滑移并发生垂直剪切滑动破坏，但事实上由于纵向力p的作用，这种情况不会出现。
But again, because of the compressive prestress imposed by the metalbands as a form of circular prestressing, they will remain in place.
但又是由于金属箍施加的压应力产生了环形预应力，因而木桶仍保持原样。
Linear prestressing had progressed a long way from the early days.
线预应力从出现以来，已经有了很大的发展。
The success in the development and construction of all these structures has been due in no small measure to the advances in the technology of materials, particularly prestressing steel, and the accumulated knowledge in estimating the short and long-term losses in the prestressing forces.
所有这些结构物的建造成功，在很大程度上应归功于材料技术的进步，也应归功于预应力损失计算方法的不断完善。
阅读材料
According to the AASHTO technology implementation group, HPC, which is concrete thathas been designed to be more durable, and, if necessary, stronger than conventional concrete, can help highway agencies to build bridges that are better able to hold p to traffic and environmental demand