Review on Construction Technologies Reducing Seismic Forces for Earthquake Resistant Construction

Earthquakes and their devastating effects have been influential in determining recordedcivilization, and since the beginnings, acquiring knowledge to foresee or avoid earthquakehazards is still an important component of human search for information [1].Earthquake resistantconstruction has been on radar of technology evolution since the beginning of modern construction techniques. Shock proof and vibration proof design of buildings have been carried out since the old times. However, most of the innovation has been carried out to prevent loss of human beings than techno-economics aspects of these structures. Buildings that are constructed in a modern way are permitted during the event of an earthquake to go though plastic deformation wherein building supporting structures as well as steel in the joints helps the structure from getting collapsed. This is also the major reason for economic damage as the time it takes for the structures to renovate again and cost for their construction. Thus, for the structures to continue their activity immediately after the event it has become need of the day to design structures so that they can bear the loss caused by earthquake and can sustain their functionality even after that [2-3]. Without significant breakdown, all traditional technologies for earthquake-resistant construction helps the structures with the possibility of withstanding enormous sesmic forces. These advancements can be arranged into the groups given below: 1. Development strategies that use malleable development materials, like wood and bamboo houses. 2. Development advancements, like constructions with symmetric arrangement and elevation, use robust design styles. 3. Development innovations, like structures with groups and supports, that utilization robust primary setup. 4. Development advances decreasing seismic forces – for example, utilization of light-weight non-structural members [4]. Correlation of different techniques for their seismic reaction is profoundly requested for different various sorts of building developments to augment their safety. This will prevent human, monetary and

the response of infrastructure [5]. For the effects of seismic forces utilization of distributed multiple tuned mass dampers can be isolated and can be added to the foundation or base of the structures. This innovation can be extended even in low rise structures to give insurance to those structures. Schools, clinics, power plants and gas/fire stations might get colossal advantages from this innovation [6]. There is a strong interest for new speculation in the development field for concealment of seismic forces which require arrangement of new designs, more robust assessment of reaction of new plans and materials utilized in structures. New strategies for underlying uprightness assessment are along these lines required for this reason [7-10].

This section presents the literature review of work carried out in the field of earthquake resistant construction so as to reduce seismic forces acting on them. This includes different construction material, structures and configurations and conventional and modern techniques. In [1] the authorexamines the requirement for new intuition for making building framework to oblige the prerequisites of life saving methodology as well as for monetary and business improvement also. The construction of the structures ought to be with the end goal that they ought to get effectively and immediately reestablished even after a significant seismic earthquake. The present plans permit plastic disfigurements with the goal that they disperse the energy from the earthquake while denying the structural breakdown and loss of human existence. In any case, it sets aside long effort for full recuperation of the structure which brings about tremendous monetary misfortune. Henceforth, there is a need to configuration structure which follow seismic separation component utilizing superstructure innovation. In [2] the author audits the most regularly utilized strategies for seismic forces safe constructions created by individuals throughout past. They present a contextual analysis of Portugal culture of raising earthquake safe structures. Notwithstanding, this idea is losing its hold as development business is increasingly more centered around raising the constructions rapidly and at least expense which doesn‘t settle for the safety. Subsequently, it is important to readopt the prior demonstrated development innovation. In [3] and [4] author examine the basics of earthquake safe constructions and their plan. They work on different parts of seismic demonstrating, substitute ways to deal with earthquaketo lessen the effect of seismic waves on the constructions. The utilization of glass shade allotments is quickly filling in the places of advanced engineering. They have one day represented obliteration in the wake of experiencingearthquake developments. The conduct of such frameworks under seismic forces is examined in these compositions. The author in [5] commits to aim towards upgradingthe usefulness of suppliers and designers. Structures might have phenomenal durability against leftover power applying underlying burden, but earthquake involving deficient limit involving earthquake forces against tensionand compression. Seismically reinforcing theirdevelopment is crucial as to get their underlying assurance and to broaden their useful life. The review introduced in [6] adopts the strategy of supporting a notable arrangement of workmanship that has been built in the late nineteenth century however abandoned for quite a long while. Around 74% of private properties were built in Italy before 1980, while 25 percent of the district was marked as seismic. Right around 86% were introduced before 1991, while the essential prohibitive power yield law was passed. Numerous families need any seismic and power security development to build their level of supportability. For supported cement outlined houses, the recommended blended retrofit approach is primarily founded exclusively on the expulsion of the external layer of ―double-leafinfill walls‖[7]. Modular steel construction (MSC) includes volumetric components and on-site fabrication assembled off-site. When the ceiling height rises, the effect of the earthquakes is important. An analysis of mid-to-high MSC seismic output is described in [8]. The goal is to facilitate the further widespread application of MSC in earthquake zones‖. Masonry work develops for the most partof the world happens by and by and is still in existence. These homes are in chargeofhigh outside loadings demanded with the guide of earthquake, heavywinds, blasts, and so forth.Some advanced seismicretrofitting and reinforcing structures are developed and applied in these recentyears to the construction [9]. Indeed, even in India, just about 80% of Delhi's homes, the capital of India, are not earthquake inclined. Parallel strain opposing gadgets, for example, chevron supports, knee supports are situated in total with aluminum shear hyperlinks to limit the effect of the earthquakes on the levied frameworks [10]. The conduct of primary diaphragm for the length of the seismic waves on their general yield is being noticed [11]. Because of more than one known attributes, wood frameworks generally delivered excellent seismic by and large execution. The consequences of the last worldwide earthquake have essentially shown that the seismic wooden design can be changed along these lines [12]. Today, wooden constructions target higher statures and face various serious seismic models. As an area of interest in wood designing science, seismic protection technologies (SPTs) have emerged. Precast cement works with a development technique utilizing strong and quickly erectable pre-assembled individuals to make economical and great designs. The associations between the precast individuals just as between the individuals and the establishment require extraordinary regard for guaranteed seismic execution [13]. The authors of [14] present extreme strategies for improving the seismic efficiency of houses and bridges. The investigation focuses on the impact of various insulators and dampers on building damage prevention. The multi-level pipe damper (MPD) is a static control device suggested by the authors in [15] to reduce seismic activity.The seismic performance of structural steel with MPDs is discussed. MPD may be utilised as a maintenance and repair method for structures in severe seismic zones‖. During the structure interaction for the rope connect with slant development, it was discovered that there is no reconciliation between the dock and the foundation. When a quake strikes, the design will almost certainly overturn or the foundation turntable will break down. The differentiating pin at the centre of the ball-end turn has significant shearing strength under the 6-degree and 7-degree tremor adequacy. The seismic strides for gathering anchor bars at the turntable's edges are proposed in the investigation [16]. In the field of wood engineering, the creation of cross-laminated wood (CLT) is becoming commonplace. As a result, early adopters should avoid developing and constructing CLT systems in earthquake-prone areas. [17] shows the most recent seismic design of CLT structures.‖

The focus of this research is to propose technologies to be used in earthquake resistantconstruction of buildings and structures so as to reduce the effect of seismic forces actingon themduring the actual occurrence of the quake. Form the literature review, following research gaps were identified. for modern constructions. b) There is a need to develop technologies so as to protect timber structures from seismic forces to further improve their design. c) Modular steel structure is used in construction as the whole structure may not be feasible to manufacture on-site. As such there is demand in conducting seismic performance in mid-to-high rise buildings where modular steel structure is used. d) There is a huge gap in research concerning retrofitting of old buildings without seismic resistance with modern techniques for their protection from earthquakes.The research gaps show that the seismic performance of the timber structures can further be improved by using modern techniques. The use of modular steel structure which has proven its performance in low rise buildings are now getting popular withmid-to-high rise buildings and thus there is a need to conduct its analysis. Mass dampers need to be studied in more depth for isolating the building from seismic forces.

The significance and scope of this work is to evaluate existing methods for earthquake resistant construction and propose designs which help suppress seismic forces acting on them. Earthquake fundamentals like its occurrence, causes, related terminologies, assessment of the site of occurrence and ground designs consisting of its motions are studied in detail. Based on this study, various methods to suppress seismic forces acting on the structures were evaluated using numerical and simulation techniques. It was concluded that use of single damper for seismic isolation of buildings proved inefficient in case of major earthquakes. Moreover, non-engineered and masonry buildings which are cheap alternatives to more reformative and complex structures suffer heavy loss during an occurrence of earthquake. To overcome these disadvantages, use of multiple mass dampers, earthquake resistant materials and structures and modular steel structure in low to high rise buildings is suggested. Comparison of various structures and materials were done using numerical and simulation platform and new design of structures and its material was proposed for reduction of seismic forces acting on them. Moreover, use of mass dampers was studied in depth for its role in seismic isolation of buildings, its response was improved by placing multiple dampers

The aim of this research work is to propose and evaluate Construction Technologies which help in reducing Seismic Forces for Earthquake Resistant Construction. Apart from this below arebasic objectives of this project: - To study literature and analyze techniques used for Earthquake Resistant Construction. - To propose the state-of-the-art techniques for reducing seismic forces on building structures. - To propose materials and structures to be used for non-engineered building constructions for resisting damage due to earthquake. - To calculate seismic response of proposed techniques and to verify whether the design is complacent according to guidelines specified in IS:4326.

• Blue mussels can be found sticking to rocks and ocean decks up and down the shore of New England. In between of their twin sea shells emerges a stingy outcrop of cabling which helps them to be anchored in their place. Normally, even the most incredibly elevated tides can't pry them free. To remain appended to their shaky roosts, mussels emit tacky filaments known as byssal strings. A portion of these strings are firm and inflexible, while others are adaptable and flexible. Specialists are attempting to join this specific component into structures to cause the structure to withstand earthquakes. • A team at Blume Earthquake Engineering Centre, USA, led by Deierlein are working on an innovative innovation known as the shaking outline, which comprises of three fundamental parts - steel outlines, steel links, and steel wires. During a seismic occasion, energy-dispersal is assigned to a wire while the post-tensioning (PT) links reestablish the edge to its underlying setup. At the point when a seismic tremor strikes, the steel outlines rock all over. The entirety of the energy gets coordinated descending to a fitting that houses a few tooth-like wires. The teeth of the wires grind together and may even fizzle, however the actual edge stays unblemished. When the shaking has halted, the steel links in the casing pull the structure once again into an upstanding position. reoccupied rapidly after a seismic tremor. • Seismic Invisibility is a term used to describe the invisibility of earthquake Cloak - A sequence of boreholes is drilled around the perimeter of the structure to be protected. These boreholes appear to act as a seismic cloak, shielding a building—or maybe a whole city—from the devastating waves of an earthquake. Isolators, dampers, and other vibration response control devices are no longer necessary. • Cardboard can be used as a strong and long-lasting construction material. Several constructions constructed by Japanese architects use polyurethane-coated cardboard tubes as the major frame elements. The Transitional Cathedral in Christchurch, New Zealand, was built from 98 massive cardboard tubes and wooden beams. The cardboard-and-wood construction is exceptionally light and flexible, outperforming concrete during seismic events by a wide margin. It's also less likely to crush those who are within if it does collapse. • Levitating Houses – A Japanese company has developed an idea where a house in stable condition rests on a deflated airbag. When the sensors detect a vibration, they switch on the compressor which turns pumps the air into this bag. This airbag lifts the house by 3cm from its foundation. The structure will hover for the duration of the quake and then the airbag deflates and the structure settles to its original condition. This technique can be fitted to new homes of appropriate weight and also, can be used to retrofit the existing house. • Another research team from ARX PAX (California) has filed a patent for the levitating house. The mechanism is quite different from the Japanese and this may find wide applications is tall buildings. A three-part foundation system is used to support a structure in this method. A containment vessel, a buffer medium, and a construction platform are what they are. The buffer medium can be a fluid, a gas, or a liquefiable solid, and the building can be built on the construction platform. The containment vessels subjected to lateral forces which transfer the load to the buffer medium. This medium acts as a damper and significantly reduces the forces being transmitted to the building. The system can levitate the building for around 90seconds • Eco-friendly ductile cementations composite(EDCC) spray – A research team from the University of British Columbia (Vancouver, Canada) has developed a new radical approach to make the buildings resist earthquakes. EDCC combines cement with polymer-based fibers, flash, and other additives in making it eco-friendly and has been engineered at a molecular level to be strong and malleable at the same time. This material when applied as a thin coating (10mm), was found to have improved seismic resistance of the structure by withstanding an earthquake of intensity 9to 9.1 on Richter scale (Tohoku earthquake, Japan, 2016). At present, this technique has been suggested for retrofitting of the existing structures such as an elementary school building in Vancouver.

All around the globe, researchers are trying to make low cost and well planned technology for earthquake resistant construction by using easily accessible resources. Like, in Peru, by reinforcing wally with plastic mesh researchers have made much strongertraditional adobe structures much. In India, Bamboo have been used by engineers to strengthen concrete. And in Indonesia, few homes are built in a way so that they can stanf on efficient bearings made by old tires that are filled with either sand or stone. New innovative watts are in progress and researchers are working everyday on many new technologies that are being tested many times before running into practice.

[1] Takagi, Jiro, and Akira Wada (2019). "Recent earthquakes and the need for a new philosophy for earthquake-resistant design." Soil Dynamics and Earthquake Engineering 119: pp. 499-507. [2] Ortega, Javier, Graça Vasconcelos, Hugo Rodrigues, Mariana Correia, and Paulo B. Lourenço (2017). "Traditional earthquake resistant techniques for vernacular architecture and local seismic cultures: A literature review." Journal of Cultural Heritage 27: pp. 181-196. [3] Krinitzsky, Ellis L., James P. Gould, and Peter H. Edinger (2018). Fundamentals of earthquake-resistant construction. Vol. 51. John Wiley & Sons. [5] Aiello, Carolina, Nicola Caterino, Giuseppe Maddaloni, Antonio Bonati, Annalisa Franco, and Antonio Occhiuzzi (2018). "Experimental and numerical investigation of cyclic response of a glass curtain wall for seismic performance assessment." Construction and Building Materials 187: pp. 596-609. [6] Sayin, Baris, Baris Yildizlar, Cemil Akcay, and Baris Gunes (2019). ―The retrofitting of historical masonry buildings with insufficient seismic resistance using conventional and non-conventional techniques." Engineering Failure Analysis 97: pp. 454-463. [7] Artino, Antonio, Gianpiero Evola, Giuseppe Margani, and Edoardo Michele Marino (2019). "Seismic and energy retrofit of apartment buildings through autoclaved aerated concrete (AAC) blocks infill walls." Sustainability 11, no. 14: pp. 3939. [8] Deng, En-Feng, Liang Zong, Yang Ding, Zhe Zhang, Jun-Feng Zhang, Feng-Wei Shi, Li-Ming Cai, and Shu-CaiGao (2020). "Seismic performance of mid-to-high rise modular steel construction-A critical review." Thin-Walled Structures 155: pp. 106924. [9] Wang, Chuanlin, VasilisSarhosis, and Nikolaos Nikitas (2018). ―Strengthening/retrofitting techniques on unreinforced masonry structure/element subjected to seismic loads: A literature review." The Open Construction and Building Technology Journal 12, No. 1. [10] Patil, R., A. Naringe, and JS Kalyana Rama (2018). ―Novel techniques for seismic performance of high rise structures in 21st century: state-of-the art review." In IOP conference series: materials science and engineering, vol. 330, pp. 012126. [11] Jereen, Ann Thomas, Soumya Anand, and Binu M. Issac (2017). ―Seismic evaluation of buildings with plan irregularity." In Applied Mechanics and Materials, vol. 857, pp. 225-230. Trans Tech Publications Ltd, 2017. [12] Ugalde, David, José Luis Almazán, Hernán Santa María, and Pablo Guindos (2019). ―Seismic protection technologies for timber structures: a review." European Journal of Wood and Wood Products 77, No. 2: pp. 173-194. [13] Kurama, Yahya C., Sri Sritharan, Robert B. Fleischman, Jose I. Restrepo, Richard S.

PhD diss., American Society of Civil Engineers. [14] Nath, Snehansu, NirmalenduDebnath, and Satyabrata Choudhury (2018). "Methods for Improving the seismic performance of structures: A review." In IOP Conference Series: Materials Science and Engineering, vol. 377, pp. 01214. [15] Zahrai, Seyed Mehdi, and Abdullah Cheraghi (2017). ―Reducing seismic vibrations of typical steel buildings using new multi-level yielding pipe damper." International Journal of Steel Structures 17, No. 3: pp. 983-998. [16] Xiao, Junhua, Miao Liu, TieyiZhong, and Guangzhi Fu (2019). ―Seismic performance analysis of concrete-filled steel tubular single pylon cable-stayed bridge with swivel construction." In IOP Conference Series: Earth and Environmental Science, vol. 218, no. 1, p. 012087. IOP Publishing. [17] Tannert, Thomas, Maurizio Follesa, Massimo Fragiacomo, Paulina Gonzalez, Hiroshi Isoda, Daniel Moroder, HaibeiXiong, and John van de Lindt (2018). ―Seismic design of cross-laminated timber buildings." Wood and Fiber Science: pp. 3-26.

PhD Student, Kalinga University, Raipur