Damage characteristics and seismic capacity of buildings during Nepal M s 8.1 earthquake

Sun, Baitao; Yan, Peilei

doi:10.1007/s11803-015-0046-x

Cited by 34 publications

(18 citation statements)

References 12 publications

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“…Due to the mathematical intractability of solutions to the nonlinear behavior of liquid sloshing, attempts have been made to develop equivalent reduced‐order models to capture the salient features of sloshing. [ 1,4,5,7–12 ] In most shallow to medium water depth TSDs, screens are introduced to add auxiliary damping to the liquid (water) motion. It has also been noticed that screens help to dampen the sloshing action and filter away some of the nonlinear features.…”

Section: Resultsmentioning

confidence: 99%

“…Thus, auxiliary damping sources like screens (submerged nets) are introduced, to increase inherent damping. [ 1–12 ]…”

Section: Introductionmentioning

confidence: 99%

“…In those studies, sensors measure wave heights, forces on screens and tank walls, and base/reaction shear forces introduced by the TSD. [ 5,6,8,10 ] To experimentally evaluate a structure‐TSD performance, though done selectively, most of the practices have utilized a swing/hanging slab frame system with a water tank to represent building dynamics and TSD with an actuator or pre‐tensioned drive spring for external sinusoidal forces. [ 6,11,13–15 ] As shown in Figure 1, the swing system is composed of a large mass with a TSD model on top, which is vertically suspended by lengthy cables and horizontal springs.…”

Section: Introductionmentioning

confidence: 99%

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Hybrid simulation of a tall building with a double‐decker tuned sloshing damper system under wind loads

Kwon

Kareem

2020

Structural Design Tall Build

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Summary This study presents an advanced experimental system, hardware‐in‐the‐loop (HIL), recently referred to as hybrid testing, to validate the effectiveness of a double‐decker tuned sloshing damper (TSD) system with screens applied to a recently constructed tall building. The HIL simulation facilitates a performance analysis of a combined structure‐damper system in which the nonlinear behavior of liquid motion in a TSD is physically modeled, whereas a building system under wind loads that behaves linearly is embedded virtually utilizing a computer model. The scaled model of the TSD is composed of a computer‐controlled system with a shaking table, sensors, and a real‐time communication link. The virtual building system on the computer communicates in real time with the hardware, that is, the physical model of TSD to evaluate on‐the‐fly the performance of a combined building‐TSD system. External excitation including random loading characteristics of winds, waves, or earthquakes can be implemented in HIL to observe the dynamics of the building‐damper system under a host of loading scenarios. An example of a recently completed tall reinforced concrete building with multiple TSDs placed side by side in double‐decker configuration under a suite of external loads and the proposed damping estimation procedure to evaluate the amount of auxiliary damping with TSD for ensuring the TSD design is presented. It examines the habitability of the building in winds and evaluates the effectiveness of the TSD system as well as the efficacy of the first HIL simulation for an actual tall building‐TSD system equipped with screens inside.

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Section: Resultsmentioning

confidence: 99%

“…Thus, auxiliary damping sources like screens (submerged nets) are introduced, to increase inherent damping. [ 1–12 ]…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hybrid simulation of a tall building with a double‐decker tuned sloshing damper system under wind loads

Kwon

Kareem

2020

Structural Design Tall Build

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“…The coseismic landslides seriously damaged two highways, Pasang Lhamu Highway and Araniko Highway, connecting China and Nepal. After the event, several research teams carried out field investigations of seismic damages and earthquake-triggered landslides (Collins and Jibson 2015;Hashash et al 2015;Sun and Yan 2015;Kargel et al 2016;Lacroix 2016;Sharma et al 2016). Until now, however, little work focuses on the landslides that damaged these two highways.…”

Section: Introductionmentioning

confidence: 99%

Landslide damage along Araniko highway and Pasang Lhamu highway and regional assessment of landslide hazard related to the Gorkha, Nepal earthquake of 25 April 2015

Tian

Zhou

et al. 2017

Geoenviron Disasters

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Background: The Gorkha, Nepal Mw 7.8 earthquake of 25 April 2015 triggered a large number of coseismic landslides in a broad area. Two highways, Araniko Highway and Pasang Lhamu Highway, that connect Tibet of China and Nepal, were affected seriously by these landslides. The purpose of this study was to investigate the landslide damage along the two highways, construct a detailed and complete inventory of coseismic landslides in the 5-km buffer area of the Araniko Highway, and perform a regional assessment of landslide hazard in the affected area. Findings: Based on visual interpretation of high-resolution satellite images, field investigations, and GIS technology, we investigated the coseismic landslides along the Araniko Highway and Pasang Lhamu Highway. A detailed pointbased inventory of coseismic landslides was constructed and spatial distributions of the landslides were analyzed. Correlations between the landslides and five controlling factors, i.e. elevation, slope angle, slope aspect, lithology, and seismic intensity, were illustrated statistically which permitted to assess landslides hazard in a larger rectangle area.

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“…China's Ministry of Commerce supported 22 earthquake engineers to investigate the seismic hazards in and around the Rasuwa and Sindhupalchok districts from 5 to 20 June. Figure 2 plots the intensity map with a seismic intensity of VII to IX generated on the basis of field study data collected from all members (GAQSIQ 2008;Sun and Yan 2015). The assemblies of buildings over a total of 168,290 km 2 were investigated.…”

Section: Introductionmentioning

confidence: 99%

Seismic damage to schools subjected to Nepal earthquakes, 2015

et al. 2017

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Schools are the gathering place of the young generation. They are expected to act as a refuge after an earthquake. Even though Nepal has no building supervision system, the quality of school buildings receives necessary attention. During a field study conducted in mid-June, we summarised the seismic damage to 12 schools with various types of structures, including local characteristic reinforced concrete frames, cement-bonded or mud-bonded masonry and timber frames. The pros and cons of local construction technologies are discussed. Some interesting earthquake phenomena, such as the effects of forward directivity, site configuration, earthquake sequence and safe distance from a slope, are discussed. The geo-security evaluation of a proposed school site in mountainous Baramchi is also conducted.

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Damage characteristics and seismic capacity of buildings during Nepal M s 8.1 earthquake

Cited by 34 publications

References 12 publications

Hybrid simulation of a tall building with a double‐decker tuned sloshing damper system under wind loads

Hybrid simulation of a tall building with a double‐decker tuned sloshing damper system under wind loads

Landslide damage along Araniko highway and Pasang Lhamu highway and regional assessment of landslide hazard related to the Gorkha, Nepal earthquake of 25 April 2015

Seismic damage to schools subjected to Nepal earthquakes, 2015

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