Effects of Concrete Strength and Openings in Infill Walls on Blasting Responses of RC Buildings Subjected to TNT Explosive

Altunışık, Ahmet Can; Önalan, Fatma; Sunca, Fezayil

doi:10.1007/s40996-020-00563-x

Cited by 11 publications

(4 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ata et al [75] observed a reduction of kinetic energy 6.1, 13.3, 21.9 and 44.9 % when the horizontal standoff distance is 1.5, 3.0, 5.0 and 10.0 m respectively from the ground surface. Altunisik et al [78] observed that the increase in concrete strength of infilled walls causes a decrease in peak pressure and maximum displacement by 22.5% and 32.16% respectively, when subjected to blast loading.…”

Section: Influence Of Standoff Distancementioning

confidence: 99%

A review on the performance of the underground tunnels against blast loading

Senthil¹,

Sethi²,

Pelecanos³

2021

JSEAM

View full text Add to dashboard Cite

The tunneling system has become an important part of the present infrastructure system in all over the world. Therefore, it has become important to ensure the safety of the tunnels against any type of man-made blasting activities or other accidental blasting occurrence. In order to evaluate the performance of the tunnels against blast loading, a detailed review is carried out. Based on the review in the last couple of decades, the various parameters such as tunnel lining materials, tunnel shapes, tunnel lining thickness, tunnel burial depth, charge weight and standoff distance are high influences on the performance of underground tunnels against blast loading. It was observed that the tunnel roof and the tunnel wall center are most vulnerable to the blast loads. Also, it was found that more of the tunnel lining thickness results in lesser deformation at the tunnel roof and the tunnel wall center. The increase in the burial depth of the tunnel would reduce the extent of damage to the tunnel caused by effects of surface blast loading. The stiffness and strength of the ground media may be enhanced against the effects of blast loading by grouting measures. The studies revealed that the lining materials possessing blast waves absorbing properties can be best suited to be used in tunnel linings. Further, it was observed that more damage was caused to the tunnels due to the magnitude of the charge weight. An increase in the blast load causes a significant increase in the fracture area, residual stress and lateral displacement caused to the tunnel by the action of blast load. The standoff distance of the blast load from the tunnel also plays a significant role in the damage of the tunnel. More is the distance between the charge and the tunnel, lesser damage caused to the tunnels. In addition to that, the lining thickness was predicted and the trend was calibrated and fitted logarithmically with the available results. Based on the observation from the literature, it is concluded that the use of a single lining material in the tunnel against blast loading was studied predominantly in the couple of decades. Further, the performance of the tunnels in combination of different tunnel lining materials against blast loading was found limited. The influence of barriers to save the underground tunnels against blast loading was found limited.

show abstract

Section: Influence Of Standoff Distancementioning

confidence: 99%

A review on the performance of the underground tunnels against blast loading

Senthil¹,

Sethi²,

Pelecanos³

2021

JSEAM

View full text Add to dashboard Cite

show abstract

“…Terefore, owing to its high accuracy and afordability, numerical simulation technology has increasingly developed into an important means for engineering analysis and prediction. Many scholars worldwide have employed diferent numerical simulation software to simulate and analyze blasting [20][21][22][23][24][25][26][27]. Nonetheless, most of these simulations are too simplistic to refect the actual situation of piecewise diferential blasting and do not well analyze the interaction of loads between blasting holes.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Tunneling Blast Safety Criterion Based on Longitudinal Shocks

Wang

Zhao

Zhou

et al. 2023

Shock and Vibration

View full text Add to dashboard Cite

In modern tunneling construction, the blasting seismic effect seriously threatens the safety and stability of the existing engineering construction. Meanwhile, due to the complexity of blasting loading, there is a very large difference from real blasting by using the sample triangle dynamic loading model or trapezoid dynamic loading model to analyze the blasting vibration problem. In this paper, based on the analysis of the pressure change, volume expansion, fracture development, and blasting gas motion, an accurate blasting loading model was proposed. Then, adopting plane longitudinal shock theory, the coupled loading of multiple holes can be obtained. Subsequently, the 3D simulation analysis of the tunnel blasting shows an error of 2% compared with on-site monitoring data, meeting engineering requirements. Finally, based on the simulation results, regression prediction function of the velocity curve and effective tensile stress curve under different safety criteria are established, achieving accurate prediction of the damage degree of the host rock and liner line under different engineering requirements.

show abstract

“…The concept of wall or barrier application against explosions has been a popular field of study, especially in recent years. Altunisik et al 7 explored the effects of concrete strength and openings in infill walls against TNT explosives. Meng et al 8 studied the rigid wall effect against underwater explosions by bubble pulsation monitoring.…”

Section: Introductionmentioning

confidence: 99%

Protective water curtains as wave attenuators for blast-resistant tunnels

Mohammadi

Khalilpour

Parsa

et al. 2022

Sci Rep

View full text Add to dashboard Cite

Tunnels, as highly cost-demanding infrastructures which facilitate the transportation of people and goods, have been a target of terrorist attacks within the past few decades. The significance of the destructive impact of explosives on these structures has resulted in research on the development of blast-resistant design approaches. In this paper, water curtains are proposed as a blast-resistant system due to the established performance of water against explosives in free fields in previous studies as well as its capability to mitigate the potential incoming fire after an explosion. A parametric study was conducted for this purpose, considering the effects of curtain thickness, the distance of the curtain from the tunnel opening, and the amount of TNT charge. Accordingly, fifty-two finite element (FE) models were created in the FE package ABAQUS to investigate the performance of a water wall in a typical tunnel through the Eulerian approach to simulation. The water curtains had four different thicknesses and were located at three different distances from the reference point. TNT explosive charges were placed at the tunnel opening with four different masses. The thicker walls nearer to the tunnel opening were found to be more effective. However, the peak pressure reduction in all charges was in a desirable range of 53 to 80%. The parametric study also illustrated that the peak pressures were more sensitive to wall thickness rather than TNT charges mass and the wall distance from the explosives. We anticipate this preliminary study to be a starting point for the further development of the concept of water curtains for blast mitigation.

show abstract

Effects of Concrete Strength and Openings in Infill Walls on Blasting Responses of RC Buildings Subjected to TNT Explosive

Cited by 11 publications

References 43 publications

A review on the performance of the underground tunnels against blast loading

A review on the performance of the underground tunnels against blast loading

Analysis of the Tunneling Blast Safety Criterion Based on Longitudinal Shocks

Protective water curtains as wave attenuators for blast-resistant tunnels

Contact Info

Product

Resources

About