玻璃钢夹砂管在不同疲劳状态下的力学性能分析
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摘要
通过对玻璃钢夹砂管进行室内疲劳试验和静载试验,模拟涵洞受力状态下管涵疲劳性能变化情况,进而对管涵的力学性能进行研究.在动载和静载作用下,从管涵的剩余环刚度和应变、应力角度进行力学分析.试验结果表明,玻璃钢夹砂管随疲劳作用次数的增加,其应变、应力整体增长幅度平缓,同时管涵的环向与轴向均表现出拉压相反的应变状态.而剩余环刚度降低不显著,则表明管涵有良好的抵抗变形的能力.且其内外侧应力值均符合管涵的抗拉和抗压强度要求,层间的剪切效应不显著,出现裂缝趋势不明显.由此表明它完全符合公路涵洞实际应用要求.
By doing the indoor fatigue test and static load test of FRPM pipes, the fatigue performance of pipe was simulated under the condition of culvert, then the mechanical properties of FRPM pipes are studied. Under the action of dynamic load and static load, the mechanical analysis is carried out from residual ring stiffness and strain and stress on pipe.The test results show that with increasing number of fatigue, the strain and stress of pipes increase gently, at the same time the ring and axis of pipes show the opposite state of tension and compression.Then the reduction of residual ring stiffness is not significant, which shows that the pipes have good resistance to deformation. And the inner and outer stress values meet the requirements of strength, interlaminar shear effect is not significant, crack tendency is not obvious.Therefore, it is completely conformed to the requirements of highway culvert application.
By doing the indoor fatigue test and static load test of FRPM pipes, the fatigue performance of pipe was simulated under the condition of culvert, then the mechanical properties of FRPM pipes are studied. Under the action of dynamic load and static load, the mechanical analysis is carried out from residual ring stiffness and strain and stress on pipe.The test results show that with increasing number of fatigue, the strain and stress of pipes increase gently, at the same time the ring and axis of pipes show the opposite state of tension and compression.Then the reduction of residual ring stiffness is not significant, which shows that the pipes have good resistance to deformation. And the inner and outer stress values meet the requirements of strength, interlaminar shear effect is not significant, crack tendency is not obvious.Therefore, it is completely conformed to the requirements of highway culvert application.
引文
[1]杨繁.玻璃纤维增强塑料夹砂管涵洞的应用研究[D].武汉:武汉理工大学,2003.
[2]潘典坤,李萌崛,严正.玻璃纤维增强聚丙烯复合材料的疲劳性能研究[J].工程塑料应用,2011,39(10):73-77.
[3]林立,史艳华,梁平,等.玻璃钢夹砂管的应用现状及展望[J].当代化工,2009,38(5):515-518.
[4]黄吉龙.大口径玻璃钢夹砂顶管室内试验与数值分析[D].上海:上海交通大学,2007.
[5]顾杨,黄金明,陈锦剑,等.大口径玻璃钢夹砂顶管管材的抗压性能[J].上海交通大学学报,2009,43(2):178-181.
[6]刘朝晖,黄优,王旭东,等.应变水平对沥青混合料动态模量及黏弹性的影响分析[J].中外公路,2017,37(1):188-192.
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[8]贾哲.基于有限元分析的玻璃钢夹砂管道的强度分析和数值模拟辅助设计[D].南昌:南昌大学,2016.
[9]JTG D50-2006,公路沥青设计规范[S].
[10]GB/T 21238-2007,玻璃纤维增强塑料夹砂管[S].
[11]GB/T 9647-2003,热塑性塑料管材环刚度的测定第9部分:计算环刚度[S].
[12]汪准,邓京兰,王继辉,等.玻璃钢夹砂管道的环刚度有限元分析及应用[J].玻璃钢/复合材料,2014(11):16-20.
[13]张济源,郑彦军,石华旺,等.荷载作用下埋地玻璃钢夹砂管受力特征分析[J].玻璃钢/复合材料,2016(5):80-84,22.
[14]魏连雨,张国盘,张济源,等.FRPM管涵力学特性试验与数值模拟研究[J].玻璃钢/复合材料,2016(8):73-77.
[15]乌延玲.公路钢波纹管涵洞受力与变形特性及应用研究[D].西安:长安大学,2012.
[2]潘典坤,李萌崛,严正.玻璃纤维增强聚丙烯复合材料的疲劳性能研究[J].工程塑料应用,2011,39(10):73-77.
[3]林立,史艳华,梁平,等.玻璃钢夹砂管的应用现状及展望[J].当代化工,2009,38(5):515-518.
[4]黄吉龙.大口径玻璃钢夹砂顶管室内试验与数值分析[D].上海:上海交通大学,2007.
[5]顾杨,黄金明,陈锦剑,等.大口径玻璃钢夹砂顶管管材的抗压性能[J].上海交通大学学报,2009,43(2):178-181.
[6]刘朝晖,黄优,王旭东,等.应变水平对沥青混合料动态模量及黏弹性的影响分析[J].中外公路,2017,37(1):188-192.
[7]王汪宇.玻璃钢夹砂管失效分析[D].广州:华南理工大学,2009.
[8]贾哲.基于有限元分析的玻璃钢夹砂管道的强度分析和数值模拟辅助设计[D].南昌:南昌大学,2016.
[9]JTG D50-2006,公路沥青设计规范[S].
[10]GB/T 21238-2007,玻璃纤维增强塑料夹砂管[S].
[11]GB/T 9647-2003,热塑性塑料管材环刚度的测定第9部分:计算环刚度[S].
[12]汪准,邓京兰,王继辉,等.玻璃钢夹砂管道的环刚度有限元分析及应用[J].玻璃钢/复合材料,2014(11):16-20.
[13]张济源,郑彦军,石华旺,等.荷载作用下埋地玻璃钢夹砂管受力特征分析[J].玻璃钢/复合材料,2016(5):80-84,22.
[14]魏连雨,张国盘,张济源,等.FRPM管涵力学特性试验与数值模拟研究[J].玻璃钢/复合材料,2016(8):73-77.
[15]乌延玲.公路钢波纹管涵洞受力与变形特性及应用研究[D].西安:长安大学,2012.