Main conclusions are given:(1) Because we must choose feasible in technology, rational in economic scheme about arch reinforcement and alternation, firstly we must check this bridge's technical condition and all kinds of disfigurement, across-the-aboard. Through detecting we can make certain of destructive degree, find out the reason about bridge diseases, supply necessary gist for bridge using and reinforcement.

得出的主要結(jié)論有：(1)為了選定技術(shù)上可行欧美性爱黄片小视频，經(jīng)濟上合理的拱橋加固迷奸视频网站、改造方案偷窥自拍欧美色图，首先必須對橋梁技術(shù)狀況影音先锋不鲁321资源网，各種缺陷，病害進(jìn)行全面細(xì)致的檢查與檢測在线A片中文亚洲，通過檢測確定橋梁各部損壞的程度国内免费自拍1视频在线观看网址，查明橋梁病害原因，為橋梁的使用及維修加固提供必要的依據(jù)亚洲区国产日韩区在线观看。

Therefor, the lining construction scheme of "the inverted arch is lined after the lining of the side and roof arch" is adopted in the construction of the tunnel for the water conveyance project of Dahuofang Reservoir, and then the excavation and the lining are carried out at the same time, by which the construction progress has been promoted and the total construction period of the project has been ensured as well.

為此东北女人叫床大片毛片AA，經(jīng)研究在大伙房水庫輸水工程的隧道施工中采用了先邊頂拱后仰拱的襯砌施工方案，實現(xiàn)了開挖與襯砌平行作業(yè)国产城中村嫖妓播放观看，從而加快施工進(jìn)度性交网址在线观看，確保了工程建設(shè)總工期狂野欧美激情XXXXX。

arch scheme arch：弧拱

arch saw ==> 拱鋸 | arch scheme arch ==> 弧拱 | arch set ==> 拱形支架