【摘要】：上承式鋼板梁橋是中、小跨徑橋梁最常用的形式,其鋼板梁的制孔精度直接關(guān)系到橋梁的安裝質(zhì)量。鑒于此,以普通32m鋼板梁橋及4片主梁并列的50m鋼板梁橋?yàn)檠芯繉?duì)象,通過分析2座橋鋼板梁的結(jié)構(gòu)特點(diǎn)及連接方式的異同,圍繞零件加工、組裝、焊接及矯正等影響栓孔重合率的因素,確定了2座橋鋼板梁的制孔工藝,即普通32m板梁橋制孔主要采用先孔法,而4片主梁并列的50m板梁橋主要采用后孔法。采用該工藝實(shí)施后,2座橋鋼板梁的制孔精度均達(dá)到了標(biāo)準(zhǔn)要求,驗(yàn)證了工藝的合理性,實(shí)現(xiàn)了提高制孔精度、保證栓孔重合率和提高生產(chǎn)效率的目的。
[Abstract]:The top bearing steel plate girder bridge is the most commonly used form of small span bridges. The accuracy of the steel plate beam is directly related to the installation quality of the bridge. In view of this, the 50m steel plate girder bridge with the common 32m steel plate girder bridge and 4 main beams is studied. Through the analysis of the similarities and differences of the structure characteristics and connection modes of the 2 bridge steel plates, the processing of the parts is processed around the parts. With the factors of assembling, welding and correction affecting the reclosing rate of the bolt holes, the hole making process of the 2 bridge steel plate beams is determined. That is, the first hole method is used in the common 32m plate girder bridge, while the 50m plate girder bridge of the 4 main beams is mainly adopted by the rear hole method. After the implementation, the hole precision of the 2 bridge steel plate beams has reached the standard requirements, and the process has been verified. The rationality of the system has achieved the goal of improving the accuracy of drilling, ensuring the overlap ratio and improving the production efficiency.
【作者單位】： 中鐵山橋集團(tuán)有限公司;
【分類號(hào)】：U448.36

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