|Table of Contents|

Simplified Analysis Methods of Dynamic Characteristic of Staggered Truss Structure(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2006年04期
Page:
28-
Research Field:
Publishing date:
2006-12-20

Info

Title:
Simplified Analysis Methods of Dynamic Characteristic of Staggered Truss Structure
Author(s):
ZHOU Qi-shi1;  ZHOU Xu-hong2;  LIU Yong-jian3
1. School of Civil Engineering and Architecture, Central South University, Changsha 410075, Hunan, China; 2. School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, Gansu, China; 3. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China
Keywords:
staggered truss structure;  natural vibration frequency;  vibration mode;  stiffness
PACS:
TU973.15
DOI:
-
Abstract:
An imaginary structure whose mass and stiffness were close to staggered truss structure's was created according to that staggered truss structure has more uniformly mass and stiffness distribution, and the simplified design formulas to calculate the frequency and vibration mode of hypothetical structure were proposed. Based on the matrix perturbation theory, the formulas about the relationship expression and the coefficient in the expression of the mass, stiffness, natural vibration frequency, vibration mode between the staggered truss structure and the hypothetical structure were proposed. At last, the theory proposed in this paper was applied to analyze the natural vibration frequency, vibration mode, and earthquake effect of examples. The results show that the method in this paper can prevent the interactive calculation and decrease the calculating work load, and the method can also calculate the respective natural vibration frequency and vibration mode of structure, which has a better coincidence with the accurate method, while the disparity between the structural effect applied with the equivalent base shear method of high-rise staggered truss structure and the structural effect applied with the vibration mode superposition method was significant.

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Last Update: 2006-12-20