Single-column type concrete pier anti-overturning steel joist reinforcing device based on rapid construction and construction method of single-column type concrete pier anti-overturning steel joist reinforcing device: Fid-Bau Portal

Single-column type concrete pier anti-overturning steel joist reinforcing device based on rapid construction and construction method of single-column type concrete pier anti-overturning steel joist reinforcing device

LI PEISEN

Abstract

The invention relates to the field of bridge engineering construction, in particular to a single-column concrete pier anti-overturning steel joist reinforcing device based on rapid construction and a construction method thereof, and the single-column concrete pier anti-overturning steel joist reinforcing device comprises a steel hoop, a splicing anchor bolt, a stress anchor bolt, a joist top plate, a joist web, a rubber support and a UHPC grouting material. The steel joist is characterized in that the steel joist can be matched and prefabricated in a factory and is transported to a site to be prefabricated and installed. The steel joist comprises a top plate and a web plate, and rectangular grooves are formed in the two sides of the upper surface of the top plate and used for containing newly-added rubber supports. The steel joist is connected with the concrete pier through anchor bolts on the steel hoops. A gap of 2 cm is formed between the steel hoop and the concrete pier and used for being filled with UHPC grouting materials. The UHPC grouting material is ultra-high performance concrete and has excellent mechanical properties, and the anti-overturning steel joist device is simple in structure, convenient to operate and suitable for construction work of high pier reinforcement; the method has no requirement on an under-bridge construction operation platform, and can be used in water, severe geological conditions such as soft foundations and high piers; compared with a reserved profile steel method and a reserved through-hole profile steel method, the construction method belongs to a lossless construction method, and the appearance and the load bearing performance of the structure are not influenced; the construction period is short, and the influence on the existing traffic is small.

本发明涉及桥梁工程施工领域，具体涉及一种基于快速化施工的独柱式混凝土桥墩抗倾覆钢托梁加固装置及其施工方法，包括钢抱箍、拼接锚栓、受力锚栓、托梁顶板、托梁腹板、橡胶支座和UHPC灌浆料。其特征在于钢托梁能在工厂完成匹配预制，在运输到现场预制安装。钢托梁包括顶板和腹板，其中顶板上表面两侧均设置矩形凹槽，用以放置新增橡胶支座。钢托梁通过钢抱箍上的锚栓与混凝土桥墩连接。在钢抱箍与混凝土桥墩之间设置2cm的空隙，用于填充UHPC灌浆料。UHPC灌浆料为超高性能混凝土，具有优越的力学性能，抗倾覆钢托梁装置结构简单，便于操作，适合高墩加固的施工作业；对桥下施工作业平台无要求，可在水中、恶劣地质条件如软基等以及高墩中使用；与预留型钢法、预留洞穿型钢法相比，其属于无损工法，不对结构的外观及承荷性能产生影响；施工工期较短，对既有交通影响小。

Zugriff

Download

Seitennavigation

Dokumentinformationen

Ähnliche Titel

Exportieren, teilen und zitieren