Construction method for steel-concrete combined section of steel-concrete hybrid beam: Fid-Bau Portal

Construction method for steel-concrete combined section of steel-concrete hybrid beam

WANG HONGFEI / LIU JIANHONG / ZHAO BIN / BAI KAI / GUO YINGQI

The invention relates to the technical field of bridge construction, in particular to a construction method for a steel-concrete combined section of a steel-concrete hybrid beam. An embedded connecting piece is arranged on the side, close to a steel beam, of a concrete beam, one end of the embedded connecting piece is connected with a steel bar of the concrete beam to form a whole, and the other end of the embedded connecting piece is connected with the steel beam; different types of pre-embedded connecting pieces are embedded in the concrete beam according to needs, and the pre-embedded connecting pieces are divided into main shear-resistant connecting pieces, main shear-resistant part bending-resistant connecting pieces and main bending-resistant part shear-resistant connecting pieces. The method has the advantages that the steel-concrete structure construction embedded parts are additionally arranged, the embedded connecting parts are adopted to replace the steel-concrete combined section steel beams for stress transition, the hoisting workload of the steel-concrete combined section steel beams is reduced in the construction process, and the construction cost is saved; the temporary connector is not influenced by construction factors such as wind and temperature, and the purposes of improving the construction precision of the steel-concrete combined section and saving the construction cost are achieved; the construction is simple, the later period is controllable, and the construction quality of the steel-concrete combined section can be better guaranteed.

本发明涉及桥梁施工技术领域，尤其是一种钢混混合梁钢混结合段施工方法，在混凝土梁邻近于钢梁的一侧设置有预埋连接件，预埋连接件的一端与混凝土梁的钢筋连接形成整体，另一端与钢梁连接；按需要在混凝土梁内埋设不同种类的预埋连接件，预埋连接件分为主要抗剪连接件、主要抗剪部分抗弯连接件、主要抗弯部分抗剪连接件。本发明的优点是：通过增加钢混结构施工预埋件，采用预埋连接件代替钢混结合段钢梁进行应力过渡，在施工过程中减少钢混结合段钢梁吊装的工作量，节约施工成本；临时接口不受风、温度等施工因素影响，且具有达到增加钢混结合段的施工精度并节约施工成本的目的；施工简单、后期可控，可以更好的保证钢混结合段的施工质量。

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