3.3Rigid beam-to-column joint 3 (H-section column)

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H 型钢柱的翼缘外侧在工厂焊好 H 型钢牛腿，现场把钢梁与牛腿对接：翼缘全熔透焊，腹板连接板加高强螺栓；柱内对应梁翼缘处设水平加劲肋。

Parts

Key points

牛腿的上下翼缘与柱翼缘对接焊，柱翼缘受到梁翼缘传来的拉压力，容易被拉出平面，所以柱内相应标高必须设水平加劲肋，并与柱翼缘、腹板焊牢。
梁翼缘和牛腿翼缘在现场对接，坡口全熔透；根部用焊接垫板，两侧加引熄弧板，垫板与引熄弧板伸出翼缘边缘不少于 10 mm。
腹板连接板跨过焊缝间隙，梁和牛腿两侧各有两列高强螺栓，传递梁端的剪力。
牛腿长度要让现场焊缝和螺栓都离柱面有一定距离，方便施焊与扳手操作。
焊接参照《钢结构焊接规范》GB 50661-2011，检验合格后割除引熄弧板，打磨平整。

Compiled with reference to industry standard-practice atlases. Models are parametric and dimensions illustrative — follow the design drawings and current codes.

Rigid beam-to-column joint 2 (tube column with shop-welded stubs)Erection sequence of a rigid beam-to-column joint