端板厚度对钢管混凝土端板梁柱节点的影响及螺栓力计算方法
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摘要
钢管混凝土端板梁柱节点具有较好的强度、刚度和延性,且制造施工简便。因此,以端板厚度和螺栓直径为主要参数进行了该节点的有限元分析。结果表明端板厚度对节点域承载力没有影响。端板薄导致混凝土在受压区4个螺栓孔内侧的矩形区域内产生较大局部压应力,可以此范围内梁翼缘压力除以该矩形面积来校核局压。根据端板与螺栓承载力关系,连接破坏模式有端板破坏、螺栓破坏和混合破坏。依此建立了三种螺栓力计算模型和三线性螺栓伸长转角计算模型。计算结果与有限元结果符合较好。
Using FEM,with the parameters of thickness of end-plate and diameter of bolts,studied the effect of end plate to end-plate CFT-H connection.The results are that thickness of end-plate has no effect to panel zone shear strength.But thinner end plate results in high local compress stress in panel zone within the nearest four bolts,concrete local compress strength should be checked by dividing the force by the area within the bolts。The joint failure models contain end-plate yield,bolt rupture and mixed failure.Based these,three models to calculate bolt tension,and,trilinear bolt elongate rotation model are established.Good agreements between modal - results and FEM - results are found.
Using FEM,with the parameters of thickness of end-plate and diameter of bolts,studied the effect of end plate to end-plate CFT-H connection.The results are that thickness of end-plate has no effect to panel zone shear strength.But thinner end plate results in high local compress stress in panel zone within the nearest four bolts,concrete local compress strength should be checked by dividing the force by the area within the bolts。The joint failure models contain end-plate yield,bolt rupture and mixed failure.Based these,three models to calculate bolt tension,and,trilinear bolt elongate rotation model are established.Good agreements between modal - results and FEM - results are found.
引文
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[2] RICLES J M,Lu L W,Peng S W,etc.CFT column systems as seismic resistant composite frames,Proceedings of the 2~(nd)International Symposium on Civil Infrastructure Systems,Sponsored by NSF,Hong Kong/Shenzhen P.R.C.1996,1: 53-60．
[3] RICLES J M PENG S W.LU L W.Seismic behavior of composite con- crete filled steel tube column-wide Mange beam moment connections .Journal of Structural Engineering,ASCE,2004,130 (2) : 223-232．
[4] 宗周红,林于东,林杰.矩形钢管混凝土柱与钢梁半刚性连接节点的抗震性能.建筑结构学报,2004,25(6) :29-36．
[5] 宗周红,林于东,陈惠文等.方钢管混凝土柱与钢梁连接节点的拟静力试验研究.建筑结构学报,2005,26(1) :77-84．
[6] Peng S W.Seismic resistant connections for concrete filled tube column-to-wide flange beam moment resisting frames.Pennsylvania: Lehigh University,2001．
[7] 施刚,石永久,李少甫等.多层钢框架半刚性端板连接的循环荷载试验研究.建筑结构学报,2005,26(2) :74-93．
[8] 葛继平,宗周红,杨强跃.方钢管混凝土柱与钢梁半刚性连接节点的恢复力本构模型.地震工程与工程振动,2005, 25(6) :81-87
[9] 王素芳,陈以一,陈友泉等.端板连接高强度螺栓群中和轴位置研究.建筑科学与工程学报,2005,22(3) :45-54．
[2] RICLES J M,Lu L W,Peng S W,etc.CFT column systems as seismic resistant composite frames,Proceedings of the 2~(nd)International Symposium on Civil Infrastructure Systems,Sponsored by NSF,Hong Kong/Shenzhen P.R.C.1996,1: 53-60．
[3] RICLES J M PENG S W.LU L W.Seismic behavior of composite con- crete filled steel tube column-wide Mange beam moment connections .Journal of Structural Engineering,ASCE,2004,130 (2) : 223-232．
[4] 宗周红,林于东,林杰.矩形钢管混凝土柱与钢梁半刚性连接节点的抗震性能.建筑结构学报,2004,25(6) :29-36．
[5] 宗周红,林于东,陈惠文等.方钢管混凝土柱与钢梁连接节点的拟静力试验研究.建筑结构学报,2005,26(1) :77-84．
[6] Peng S W.Seismic resistant connections for concrete filled tube column-to-wide flange beam moment resisting frames.Pennsylvania: Lehigh University,2001．
[7] 施刚,石永久,李少甫等.多层钢框架半刚性端板连接的循环荷载试验研究.建筑结构学报,2005,26(2) :74-93．
[8] 葛继平,宗周红,杨强跃.方钢管混凝土柱与钢梁半刚性连接节点的恢复力本构模型.地震工程与工程振动,2005, 25(6) :81-87
[9] 王素芳,陈以一,陈友泉等.端板连接高强度螺栓群中和轴位置研究.建筑科学与工程学报,2005,22(3) :45-54．
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