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钢结构连续梁和主梁怎么连接?

发布时间:2021-05-06 来源:http://www.jnhxtcg.com 浏览量:

当钢结构次梁为连续梁时,连续梁支座反力由主梁承受,连续梁的弯矩应通过连接传递给相邻跨连续梁。当连续梁与主梁叠接时,连续梁在主梁上连续通过,用螺栓或焊缝固定主次梁相互位置。

When the secondary beam of the steel structure is a continuous beam, the reaction force of the continuous beam support is borne by the main beam, and the bending moment of the continuous beam should be transferred to the adjacent continuous beam through the connection. When the continuous beam is overlapped with the main beam, the continuous beam passes through the main beam continuously, and the mutual positions of the primary and secondary beams are fixed with bolts or welds.

主次梁平接构造(图Ⅰ),为焊 接连接,连续梁支座反力传给焊 接在主梁上的支托,由支托通过焊缝传给主梁腹板;钢结构连续梁的弯矩通过上下翼缘传递,翼缘承受的轴向力N=M/(h-t),上翼缘承受的轴拉力由焊 接在左右连续梁上的连接板传递,下翼缘承受的轴压力由焊 接在主梁腹板上的支托顶板传递。当连续梁支座反力较大时,可将主梁腹板两侧的支托顶板穿过主梁腹板拉通。

The flat connection structure of the primary and secondary beams (Fig. I) is a welded connection. The reaction force of the continuous beam support is transmitted to the bracket welded on the main beam, and the bracket is transmitted to the web of the main beam through the weld; The bending moment of the continuous beam of steel structure is transmitted through the upper and lower flange, and the axial force borne by the flange is n = m / (H-T). The axial tension borne by the upper flange is transmitted by the connecting plate welded on the left and right continuous beams, and the axial pressure borne by the lower flange is transmitted by the supporting roof welded on the web of the main beam. When the reaction force of continuous beam support is large, the supporting roof on both sides of the main beam web can be pulled through the main beam web.

钢结构连续梁和主梁怎么连接?(图1)

钢结构连续梁和主梁连接

Connection between continuous beam and main beam of steel structure

钢构小编认为连接板及连接板与连续梁连接焊缝要按承受上翼缘轴拉力去设计;支托顶板、次梁与支托顶板间的焊缝、支托顶板与主梁间连接焊缝都应该按承受下翼缘轴压力设计;次梁支座反力传给支托,再由焊缝传给主梁腹板。

The steel structure editor thinks that the connecting plate and the welding seam between the connecting plate and the continuous beam should be designed to bear the axial tension of the upper flange; The supporting roof, the weld between the secondary beam and the supporting roof, and the connecting weld between the supporting roof and the main beam should be designed to bear the axial pressure of the lower flange; The reaction force of the secondary beam support is transmitted to the support, and then to the main beam web by the weld.

次梁为连续梁时的主次梁连接也可用螺栓(图Ⅱ),上下翼缘的连接板及连接螺栓按翼缘承受的轴向力设计。钢结构连续梁腹板与主梁连接处的螺栓按承受连续梁剪力计算。连续梁下翼缘的连接板与主梁间焊缝采用对接焊缝。

When the secondary beam is a continuous beam, bolts can also be used to connect the primary and secondary beams (Fig. II). The connecting plates and bolts of the upper and lower flange are designed according to the axial force borne by the flange. The bolts at the connection between the web and the main beam of the steel structure continuous beam are calculated according to the shear force of the continuous beam. Butt weld is used between connecting plate of lower flange of continuous beam and main beam.

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