查询词典 scheme arch

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，与道碴板桥面方案相比，整体桥面方案竖向荷载在拱肋和系梁之间的分配基本相同，混凝土板和纵梁分担的纵向力则相对更大，尤其是混凝土板，增幅较明显，应力水平整体较高，系梁分担的纵向力则得到减小，横梁的受力状况整体桥面方案明显优于道碴板桥面方案，特别是在梁端处。

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 对加固之前的廊道结构进行有限元计算，找出廊道底板开裂的原因，提出加固方案； 2 对加固前后廊道结构进行非线性有限元计算，得到加固前后廊道两现浇边墙相对位移、拱顶与底板相对位移随水库水位变化的规律和廊道结构的应力分布情况； 3 进行廊道加固前后现场观测试验，得到廊道两现浇边墙相对位移以及拱顶与底板相对位移随水库水位变化的规律； 4 对比分析加固前后现场观测试验与非线性有限元计算所得结果，论证加固方案的合理性，验证加固效果。

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.

得出的主要结论有：(1)为了选定技术上可行，经济上合理的拱桥加固、改造方案，首先必须对桥梁技术状况，各种缺陷，病害进行全面细致的检查与检测，通过检测确定桥梁各部损坏的程度，查明桥梁病害原因，为桥梁的使用及维修加固提供必要的依据。

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.

为此，经研究在大伙房水库输水工程的隧道施工中采用了先边顶拱后仰拱的衬砌施工方案，实现了开挖与衬砌平行作业，从而加快施工进度，确保了工程建设总工期。

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.

通过旋流井支护方案比选，考虑基坑特点、工程地质条件，采用拱形自撑技术，即浅埋暗挖钢格栅工艺、局部加土钉锚杆喷射混凝土支护方案。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。