Research on Dynamic Performance of String Reticulated Mega-structure

贺拥军; 孙轩; 周绪红

doi:10.13409/j.cnki.jdpme.2016.05.008

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Research on Dynamic Performance of String Reticulated Mega-structure

更新时间：2025-12-11

- Research on Dynamic Performance of String Reticulated Mega-structure
- Vol. 36, Issue 5, Pages: 737-743+750(2016)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.13409/j.cnki.jdpme.2016.05.008
  CLC： U399
- Published：2016
- 稿件说明：
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[1]贺拥军,孙轩,周绪红.张弦巨型网格结构动力特性研究[J].防灾减灾工程学报,2016,36(05):737-743+750.

贺拥军, 孙轩, 周绪红. Research on Dynamic Performance of String Reticulated Mega-structure[J]. 2016, 36(5): 737-743+750.
[1]贺拥军,孙轩,周绪红.张弦巨型网格结构动力特性研究[J].防灾减灾工程学报,2016,36(05):737-743+750. DOI： 10.13409/j.cnki.jdpme.2016.05.008.

贺拥军, 孙轩, 周绪红. Research on Dynamic Performance of String Reticulated Mega-structure[J]. 2016, 36(5): 737-743+750. DOI： 10.13409/j.cnki.jdpme.2016.05.008.

摘要

针对由张弦梁概念和巨型网格结构组合而成的一种新型超大跨空间结构

通过模态分析研究结构的动力特性

首先将主体结构单独承载和子结构协同承载两种情况下张弦巨型网格结构的前12阶自振周期及相应振型进行比较

然后对结构首阶各向振型的出现次序及相应自振周期进行了主体结构矢跨比、桁架梁高度、撑杆长度、预应力大小等一系列参数分析并与未布索结构作对比

详细研究了结构各方向刚度随不同参数改变时的变化情况。结果表明

主体结构单独承载时结构的纵向刚度最弱

子结构的引入能够极大地增强结构水平纵向刚度;预应力体系的引入可以显著提高结构的拱向及竖向刚度。为保证预应力提高结构竖向刚度的效果

主体结构应取较大矢跨比

且桁架梁高度的取值不宜太大。

Abstract

For a new type of string reticulated mega-structure based on the concept of beam string structure and cylindrical reticulated mega-structure

the structural dynamic performance was investigated by using modal analysis method

and comparison of the 1st to 12 th periods and corresponding vibration modes were then made between the case of the main structure bearing loads alone and the case of the main structure bearing loads cooperative with the substructures.In a series of parameter analysis

we further studied the order of the first modal appearance and corresponding periods.Parameters include the ratio of rise to span

the height of the latticed 3D beams

the strut length and the pre-stressing force.Results indicate that the longitudinal stiffness of the structure is weakest

the introduction of the substructures can significantly enhance the horizontal longitudinal stiffness of the structure

and the pre-stress system can improve the horizontal and vertical stiffness of the structure effectively.In addition

in order to ensure the effect that the pre-stress can improve the vertical stiffness of the structure

the ratio of rise to span should be high while the height of the latticed 3Dbeams should not be too great.

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references

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