# Correlating Stiffness and Shear Lag Behavior with Brace Configuration of Tall Truss Tube Buildings

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## Abstract

**:**

## 1. Introduction

## 2. Correlation between Shear Lag and Stiffness of Structure

## 3. Literature Review

## 4. Shear Lag Effect

**Figure 1.**Axial stress distribution in the columns of the building in web as well as in flange panels.

**Figure 2.**Three dimensional view of the Finite Element model of the cantilever beam 3 m long loaded with UDL until 1.71 m length from the fixed end.

## 5. Positive and Negative Shear Lag, Shear Lag Ratio

Beam Location from Fixed Support (m) | Shear Lag Ratio |
---|---|

0.14L | 1.252 |

0.28L | 1.054 |

0.42L | 1.039 |

0.57L | 1.010 |

0.71L | 1.001 |

0.85L | 1.002 |

L | 0.999 |

## 6. Building Modeling

Name of the Panel | Size (m^{2}) |
---|---|

Beam | 0.5 × 1.25 |

Column | 1 × 3 |

Cornor Columns | 1.5 × 1.5 |

## 7. Shear Lag Effect in a Building

## 8. Problem Statement

**Figure 7.**Bracing systems of different patterns considered in this study. Bracing angle is 45° from horizontal. Only 120 story high buildings are shown.

**Figure 8.**Buildings of Model 1. Different alignments of bracings in 120-story high buildings are shown.

#### Optimum Design Strategy

## 9. Results and Discussion

#### 9.1. Results for Buildings of Model 1

#### 9.2. Results for Buildings of Model 2

**Figure 14.**Variation of shear lag ratio with varying angle of bracing system for buildings of Model 2.

#### 9.3. Results for Buildings of Model 3

#### 9.4. Results for Buildings of Model 4

## 10. Conclusions

**Figure 20.**Top lateral deflection of buildings 120 stories high with bracing angle of 63.43° for all models.

## Conflicts of Interest

## References

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## Share and Cite

**MDPI and ACS Style**

Gaur, H.; Goliya, R.K. Correlating Stiffness and Shear Lag Behavior with Brace Configuration of Tall Truss Tube Buildings. *Buildings* **2015**, *5*, 736-750.
https://doi.org/10.3390/buildings5030736

**AMA Style**

Gaur H, Goliya RK. Correlating Stiffness and Shear Lag Behavior with Brace Configuration of Tall Truss Tube Buildings. *Buildings*. 2015; 5(3):736-750.
https://doi.org/10.3390/buildings5030736

**Chicago/Turabian Style**

Gaur, Himanshu, and Ravindra Kumar Goliya. 2015. "Correlating Stiffness and Shear Lag Behavior with Brace Configuration of Tall Truss Tube Buildings" *Buildings* 5, no. 3: 736-750.
https://doi.org/10.3390/buildings5030736