煤炭工程 ›› 2020, Vol. 52 ›› Issue (10): 25-28.doi: 10.11799/ce202010006

• 设计技术 • 上一篇    下一篇

空间连续桁架设计研究

高岩,杨小军   

  1. 中煤西安设计工程有限责任公司
  • 收稿日期:2020-05-09 修回日期:2020-06-06 出版日期:2020-10-16 发布日期:2020-12-11
  • 通讯作者: 高岩 E-mail:gaoyand@126.com

Analysis and design of continuous truss in trestle design

  • Received:2020-05-09 Revised:2020-06-06 Online:2020-10-16 Published:2020-12-11

摘要: 针对栈桥单榀桁架布置方式支座设置多、施工复杂的问题,介绍了弹性滑铰支座布置下的连续桁架设计,以及连续桁架设计中各种荷载工况下支座处的水平位移。分析了连续桁架布置下支架顺桁架方向的计算长度取值。利用材料力学理论对滑铰支座下的支架顺桁架方向的计算长度进行了求解。以平鲁工业园区输煤系统栈桥为工程背景,根据PKPM2010版V5.1的Spas+PMSAP集成设计模块计算结果,探讨了在设置弹性滑铰支座的情况下连续桁架的设计。结果表明,连续桁架的布置可以减少工程用钢量,节约造价,满足大跨度桁架的设计要求。

关键词: 连续桁架, 铰接支座, 滑动支座, 弹性滑铰支座, 计算长度

Abstract: In?the?design?of?the?trestle?of?coal?system,?the?arrangement?of?single?trusses?has?always?been?used,the?characteristic?of?continuous?truss?has?been?statemented?in?this?paper:Basing?on?elastic?sliding?support?arrangement?to?design?of?continuous?truss;The?horizontal?displacement?of?supporting?structure?under?various?load?conditions;Comparison?of?the?chord?force?between?continuous?truss?and?the?single?truss;Less?steel,?less?cost?and?also?being?able?to?meet?the?larger?span?truss?design.Analysis?of?the?Effective?length?of?the?bracket?along?the?truss?direction?under?the?continuous?truss?arrangement.

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