| 1. | The method of precast segmental construction began to evolve 40 years ago
预制节段拼装施工法是近四十年内才发展起来的施工方法。 |
| 2. | Precast segmental construction may adopt two methods generally : balanced cantilever construction and span - by - span construction
预制节段拼装施工一般可采用悬臂拼装和逐跨拼装。 |
| 3. | The finite element models of psbget are established in the thesis by utilizing finite element software , ansys
本研究应用ansys有限元程序建立预制节段拼装体外预应力梁的三维有限元模型。 |
| 4. | Precast segmental structure with external tendons ( psbget ) closely accords with the development of prestressing technique and modern construction technology
预制节段拼装体外预应力结构紧密结合着现代施工工艺和预应力的发展方向。 |
| 5. | As a safe , economic and practical construction method , it has been widely accepted and utilized in the bridge engineering all over the world
预制节段拼装作为一种可靠、经济、实用的施工方法，目前已得到世界各国的普遍认可，而且在实际工程中得到广泛应用。 |
| 6. | The principle of precast segmental construction lies in that concrete segments are assembled as a whole structure to bear load through pressure acted on the segments by post - tensioning tendons
预制节段拼装原理是借助预应力束施加于混凝土节段上的压力，使得节段间接触面紧密贴合，形成整体结构共同承担荷载。 |
| 7. | The combination of the external prestressing technique and precast segmental construction technology in the engineering is a good way to settle the conflict between the quality and the speed of bridge construction
体外预应力技术与预制节段拼装施工方法的结合应用是解决桥梁施工质量和施工速度矛盾的较好途径。 |
| 8. | As psbget has evolved remarkably in the past 20 years , the construction technology of psbget is relatively mature in other countries now . but in our country , its utilization is still of initial stage
预制节段拼装体外预应力结构在国外经过二十多年的发展，施工技术已较成熟，但在国内该技术的应用尚处于起步阶段。 |
| 9. | The principal advantages of precast segmental construction may be summarized as follows : 1 . as the girders are fabricated segmentally , there are reliable qualities and small ventures during superstructure construction
预制节段拼装技术的主要优点有： ( 1 )梁体分段预制，施工质量好，风险小；上部结构几何线形容易控制。 |
| 10. | Based on the research project of " experimental study on the key techniques of psbget in the railway bridges " and the preliminary designs of jing - hu high - speed railway bridges , mechanical characteristics of psbget are analyzed and studied in this thesis
本文依托铁道部“新建铁路节段式预应力混凝土箱梁关键技术的试验研究”科研项目，结合京沪高速铁路桥梁初步设计，对预制节段拼装体外预应力混凝土箱梁弯曲受力特性进行了分析研究。 |
