It also draws that the combination method can reduce principal tensile stress and width of the crack through the engineering practice: a cloverleaf junction on the 312 national highway in Xinyang.

• 通过312国道信阳公跨铁立交桥加固工程的实例分析可以看出，二者结合加固能有效降低旧桥主拉应力、减小裂缝宽度。