成阿公路有七座县房式木格构桥,由于行事量大,系杆螺赫帽被抖胡松动,影响验架节点处发生裂缝,下弦变形成反拱,其中198K+956,208K+859两桥跨建30公尺,变形情况更为严重,几乎每个斜杆与垫木锅头处都超裂健,最大的健口有5分分意,使科杆完全失去承力作用,下弦拱度下降最厉害的地方,竟达15公分。当时,汽革驶过时,梁木上下振动剧烈,声响震耳,很 As a highway there are seven county-style wooden lattice bridge, due to the large amount of work, the Department of rope cap nut was shaking loose, affecting the frame at the junction of cracks occurred, the lower string deformation into reverse arch, of which 198K + 956,208K +859 Bridge spanning 30 meters, the deformation is more serious, almost every diagonal stem and pad wood pot at the top of the super-crack Jian, the largest of the mouth with 5 points Jiankou, the Section completely lost bearing capacity, the lower string Camber decline the most powerful place, as much as 15 cm. At that time, the leather over the passing time, the vibration of the beam up and down violently, loudly, very