The ratio of the vertical load distributed between the arch rib and the tie beam of the two schemes is the same. For the integral girder deck scheme, the longitudinal beams and the deck slab of endure more axial force compared to the ballast girder deck scheme, especially to the deck slab with a conspicuous increase of the axial force and higher stress, and the tie beam endure less. The force-bearing characteristics of the cross beams under the integral girder deck scheme is obviously better than that of the ballast girder deck scheme, especially at the two ends of each cross beam.

在受力上亚洲一区二区国产精品一区二区，與道碴板橋面方案相比www.ggzhyc.com，整體橋面方案豎向荷載在拱肋和系梁之間的分配基本相同国产精品对白交换，混凝土板和縱梁分擔的縱向力則相對更大一级做一级a做片性视频无遮挡，尤其是混凝土板，增幅較明顯丰满熟妇精品乱又伦免费看，應力水平整體較高看美曰欧国AV毛片，系梁分擔的縱向力則得到減小，橫梁的受力狀況整體橋面方案明顯優(yōu)于道碴板橋面方案国产自慰网站，特別是在梁端處中文自拍日韩视频在线。

The major content of this thesis are as follows:1 Performed FEM analysis before strengthening, and to find out the reason for the cracking and present a strengthening scheme;2 Performed nonlinear FEM analysis before and after strengthening, and to get the varying rule of the relative displacement between the on-site cast concrete side wall and that between the precast concrete arch and the floor, as well as the stress distribution of the gallery;3 Performed on-site observation experiments on the 7~th gallery, and to get the varying rule of the relative displacement between the on-site cast concrete side wall, as well as that between the precast concrete arch and the floor.4 The results of the computation were compared with those of experiments, which verified the effect of the strengthening.

本文的主要工作有： 1 對加固之前的廊道結構進行有限元計算，找出廊道底板開裂的原因天天碰人人摸人人操，提出加固方案黄色网站网址大全欧美； 2 對加固前后廊道結構進行非線性有限元計算，得到加固前后廊道兩現(xiàn)澆邊墻相對位移、拱頂與底板相對位移隨水庫水位變化的規(guī)律和廊道結構的應力分布情況日本www.XⅩxx； 3 進行廊道加固前后現(xiàn)場觀測試驗久久天堂网av，得到廊道兩現(xiàn)澆邊墻相對位移以及拱頂與底板相對位移隨水庫水位變化的規(guī)律； 4 對比分析加固前后現(xiàn)場觀測試驗與非線性有限元計算所得結果日韩中文视频，論證加固方案的合理性一级a片黄片夫妻免费看，驗證加固效果。

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.

得出的主要結論有：(1)為了選定技術上可行亚洲偷自拍国综合第一页手机，經濟上合理的拱橋加固迷姦AV免費在綫觀看、改造方案，首先必須對橋梁技術狀況WWW12在线视频，各種缺陷，病害進行全面細致的檢查與檢測日本网址在线播放，通過檢測確定橋梁各部損壞的程度国产亚洲一区二区精品，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)久久国产精品尤物网站。

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.

為此狠狠五月综合狠狠，經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)清清AV，從而加快施工進度欧美男女a视频，確保了工程建設總工期。

By supporting schemes comparison, considering of characteristics of foundation excavation and geological conditions, arch selfsupporting technology is adopted.That is shallow mining steel grid technology compounding with partial soil nails, anchors and pouring concrete scheme.

通過旋流井支護方案比選爱哟哟精品网站在线观看，考慮基坑特點永久黄网站色视频免费AP、工程地質條件，采用拱形自撐技術久久99热免费精品久久，即淺埋暗挖鋼格柵工藝在线一区你懂、局部加土釘錨桿噴射混凝土支護方案。