摩擦型多排高强度螺栓连接分析

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Abstract Research purposes: In order to clarify the connection transmission performance，the joint reduction factor and the limit condition of the friction － type multiple － row bolt，the relative study was done by doing the model test and making the finite element calculation and theoretical analysis for contact element．

Research conclusions: The results showed that the connection transfer force characteristics of the friction － typed multiple － row bolt depended on the external load，the contact surface condition and the equivalent cross － section stiffness． The slippage between the core plate at the front and end rows bolts and the contact surface of the splicer，the design gap value between the bolt and keyhole and the load bearing capacity of the shear － loaded hole wall were considered as the criterion for the limit condition of the load bearing capacity of the connection of the multiple － row bolt．The force transmission ratio of of the joint bolts on the front and rows of long － row friction － typed high － strength bolt was the biggest． The limit load bearing capacity of the node of real bridge met the design requirement．

Key words： high － strength bolt connection friction transmission performance reduction factor limit condition

Received: 21 July 2011

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TU391

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	XU Hai － ying

Cite this article:

XU Hai － ying. Study on Connection of Friction － typed Multiple － row High － strength Bolt[J]. 铁道工程学报, 2011, 28(11): 67-71.

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http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2011/V28/I11/67

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