當(dāng)鋼結(jié)構(gòu)次梁為連續(xù)梁時(shí)，連續(xù)梁支座反力由主梁承受，連續(xù)梁的彎矩應(yīng)通過(guò)連接傳遞給相鄰跨連續(xù)梁。當(dāng)連續(xù)梁與主梁疊接時(shí)，連續(xù)梁在主梁上連續(xù)通過(guò),用螺栓或焊縫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.

主次梁平接構(gòu)造(圖Ⅰ)，為焊 接連接，連續(xù)梁支座反力傳給焊 接在主梁上的支托，由支托通過(guò)焊縫傳給主梁腹板;鋼結(jié)構(gòu)連續(xù)梁的彎矩通過(guò)上下翼緣傳遞，翼緣承受的軸向力N=M/(h-t)，上翼緣承受的軸拉力由焊 接在左右連續(xù)梁上的連接板傳遞，下翼緣承受的軸壓力由焊 接在主梁腹板上的支托頂板傳遞。當(dāng)連續(xù)梁支座反力較大時(shí)，可將主梁腹板兩側(cè)的支托頂板穿過(guò)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.

鋼結(jié)構(gòu)連續(xù)梁和主梁連接

Connection between continuous beam and main beam of steel structure

鋼構(gòu)小編認(rèn)為連接板及連接板與連續(xù)梁連接焊縫要按承受上翼緣軸拉力去設(shè)計(jì);支托頂板、次梁與支托頂板間的焊縫、支托頂板與主梁間連接焊縫都應(yīng)該按承受下翼緣軸壓力設(shè)計(jì);次梁支座反力傳給支托，再由焊縫傳給主梁腹板。

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.

次梁為連續(xù)梁時(shí)的主次梁連接也可用螺栓(圖Ⅱ),上下翼緣的連接板及連接螺栓按翼緣承受的軸向力設(shè)計(jì)。鋼結(jié)構(gòu)連續(xù)梁腹板與主梁連接處的螺栓按承受連續(xù)梁剪力計(jì)算。連續(xù)梁下翼緣的連接板與主梁間焊縫采用對(duì)接焊縫。

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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