Negative Shear Lag in Framed‐Tube Buildings

Singh, Yashi; Nagpal, A. K.

doi:10.1061/(asce)0733-9445(1994)120:11(3105)

Cited by 35 publications

(14 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A cantilever deflection of 50 to 80 percent of the total lateral sway was achieved [2]. Singh and Nagpal (1994) investigated the variation in shear lag along the height of the framed tube structure. At the base of the structure, the variation in axial forces in the perimeter column had the highest value, and, consequently, the shear lag was higher at the base of the structure.…”

Section: Previous Researchmentioning

confidence: 99%

Analyzing the Behavior of Hybrid Steel System of Tube in Tube with Bracing and Belt Truss

Kheyroddin

Madah

2018

NMCE

View full text Add to dashboard Cite

Nowadays, due to the escalation in construction of high-rise structures, the need for selecting a proper resistant structural system against earthquake and wind has increased significantly. These systems should show an optimized use of materials and should be presented as a hard and efficient structure. A good example of a high efficient system in high-rise buildings can be indicated is, the tubular system that was introduced by Fazlur Khan for the first time. It has been applied in most tall buildings all over the world. The major weakness of these systems is shear lag which restricts the column capacity from functioning properly. An appropriate solution to resolve this problem is using a braced tube system. Also, because of increasing height of the structure, the use of braced tube structures alone is not effective to control the lateral structures. Therefore, a combination of the braced tube with the inner tube and belt truss is more efficient. This paper focuses on the behavior of the hybrid steel system of tube in tube with bracing and belt trusses. To this aim, some buildings were modeled with different structural systems and different number of stories and were analyzed in terms of shear lag in web and flange, lateral displacement and drift, and absorption percent of shear force under earthquake forces. From the results obtained, it can be concluded that the belt truss does not have a favorable impact on the shear lag in the flange, but it reduces drift significantly. In addition, by adding external bracing to tube in the tube structure with belt trusses, the performance of structure improved remarkably in the aspect of shear lag, lateral displacement and absorption percent of the shear force .

show abstract

Section: Previous Researchmentioning

confidence: 99%

Analyzing the Behavior of Hybrid Steel System of Tube in Tube with Bracing and Belt Truss

Kheyroddin

Madah

2018

NMCE

View full text Add to dashboard Cite

show abstract

“…Recently, Kristek and Bauer (1993) and Singh and Nagpal (1995) also observed the existence of negative shear-lag in framed-tube structures. Yet, there is no comprehensive study on the net shear-lag behaviour or on the tube-tube interaction.…”

Section: Introductionmentioning

confidence: 94%

Simple Analysis of Framed-Tube Structures with Multiple Internal Tubes

2001

View full text Add to dashboard Cite

“…The use of multiple internal tubes reduces the effect of shear lag in the tubes, induces more effective participation of internal columns in resisting lateral forces and offers additional lateral stiffness to the structure. Kristek and Bauer [4], Singh and Nagpal [5] and Lee et al [6] extended the study to examine the shear lag behaviour of single and multiple framed-tube buildings. …”

Section: Introductionmentioning

confidence: 99%

Evaluation of Seismic Behavior of Irregular Tube Buildings in Tube Systems

Ghasemi

2016

Adv. Sci. Technol. Res. J.

View full text Add to dashboard Cite

Setbacks in the volume of a building usually arise from the demands of urban design for illumination, proportion, etc. However, in seismic events they are the cause of abrupt changes in stiffness and mass producing a concentration of stresses in the floors near the site of sudden change. In general terms, one should ensure that the transitions are as gradual as possible in order to avoid such concentration of stresses. This study is intended to investigate seismic behavior of irregular building tube in tube systems, for this purpose seismic behavior of 40-story and 60-story reinforced concrete frame building with irregular plan was evaluated, seismic behavior of irregular buildings was assessed by overall building drifts, story drifts and shear lag behavior factors.. Higher irregularities in the overall plan structure of a building increase the phenomena of story drift and shear lag phenomena. Story drift and shear lag are higher for 60-story building than for a 40-story building.

show abstract

Negative Shear Lag in Framed‐Tube Buildings

Cited by 35 publications

References 7 publications

Analyzing the Behavior of Hybrid Steel System of Tube in Tube with Bracing and Belt Truss

Analyzing the Behavior of Hybrid Steel System of Tube in Tube with Bracing and Belt Truss

Simple Analysis of Framed-Tube Structures with Multiple Internal Tubes

Evaluation of Seismic Behavior of Irregular Tube Buildings in Tube Systems

Contact Info

Product

Resources

About