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Frontiers of Structural and Civil Engineering

ISSN 2095-2430

ISSN 2095-2449(Online)

CN 10-1023/X

Postal Subscription Code 80-968

2018 Impact Factor: 1.272

Front. Struct. Civ. Eng.    2023, Vol. 17 Issue (11) : 1690-1706    https://doi.org/10.1007/s11709-023-0022-x
Seismic design and analysis of a high-rise self-centering wall building: Case study
Ying ZHOU, Rui WANG, Yiqiu LU()
State Key Laboratory of Disaster Reduction in Civil Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China
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Abstract

Post-tensioning self-centering walls are a well-developed and resilient technology. However, despite extensive research, the application of this technology has previously been limited to low-rise buildings. A ten-story self-centering wall building has now been designed and constructed using the state-of-art design methodologies and construction detailing, as described in this paper. The building is designed in accordance with direct displacement-based design methodology, with modification of seismic demand due to relevant issues including higher-mode effects, second order effects, torsional effects, and flexural deformation of wall panels. Wall sections are designed with external energy-dissipating devices of steel dampers, and seismic performance of such designed self-centering walls is evaluated through numerical simulation. It is the first engineering project that uses self-centering walls in a high-rise building. The seismic design procedure of such a high-rise building, using self-centering wall structures, is comprehensively reviewed in this work, and additional proposals are put forward. Description of construction detailing, including slotted beams, flexible wall-to-floor connections, embedded beams, and damper installation, is provided. The demonstration project promotes the concept of seismic resilient structures and contributes to the most appealing city planning strategy of resilient cities at present. The paper could be a reference for industry engineers to promote the self-centering wall systems worldwide.

Keywords self-centering wall      post-tensioned precast concrete wall      seismic resilient structure      high-rise building      seismic design      engineering practice     
Corresponding Author(s): Yiqiu LU   
Just Accepted Date: 28 August 2023   Online First Date: 10 January 2024    Issue Date: 24 January 2024
 Cite this article:   
Ying ZHOU,Rui WANG,Yiqiu LU. Seismic design and analysis of a high-rise self-centering wall building: Case study[J]. Front. Struct. Civ. Eng., 2023, 17(11): 1690-1706.
 URL:  
https://academic.hep.com.cn/fsce/EN/10.1007/s11709-023-0022-x
https://academic.hep.com.cn/fsce/EN/Y2023/V17/I11/1690
Fig.1  Full-scale shaking table test of a two-story self-centering wall structure.
Fig.2  The demonstration project of high-rise seismic resilient structures.
Fig.3  Flow chart for seismic design of high-rise self-centering wall buildings.
seismic fortification intensityminor earthquakemoderate earthquakemajor earthquakemega earthquake
60.040.120.280.36
70.080.230.500.70
7.50.120.340.721.00
80.160.450.901.35
8.50.240.681.202.00
90.320.901.402.70
Tab.1  Maximum seismic influential factors for seismic design
earthquake levelreturn period (year)three-level performance (conventional structures)four-level performance (seismic resilient structures)
minor earthquake50operationaloperational
moderate earthquake475operational after appropriate repairoperational
major earthquake2475life safety with no collapsefunctional after appropriate repair/replacement
mega earthquake10000life safety with no collapse
Tab.2  Target seismic performances of structures
Fig.4  Rotational mode and intrinsic vibration modes of the ten-story structure.
Fig.5  Design spectra of SDOF systems.
Fig.6  Plan layout of the building (unit: mm).
Fig.7  Elevation of the demonstration building: (a) walls along Grid 1; (b) three-dimensional building model.
itemrotational mode1st mode2nd mode3rd modecombined mode
period (s)3.900.770.150.07
participation factor1.42861.4649–0.6897–0.1461
equivalent displacement (mm)219.9026.181.610.29
Tab.3  Modal information of the structure with/without the combined vibration mode
story No.rotational modetarget displacement with linear assumption (mm)1st mode2nd mode3rd modecombined modetarget displacement in consideration of higher-mode effects (mm)
10600314.1438.35–1.11–0.04316.48596.84
9540282.7333.12–0.48–0.01284.66536.84
8480251.3127.940.120.02252.86476.87
7420219.9022.660.590.04221.07416.90
6360188.4917.760.910.04189.32357.04
5300157.0713.051.030.03157.62297.25
4240125.66 8.910.970.01125.98237.58
3180 94.24 5.430.75–0.01 94.40178.03
2120 62.83 2.680.45–0.03 62.89118.60
1 60 31.41 0.590.16–0.02 31.42 59.25
Tab.4  Target displacement of the structure with/without the combined vibration mode
Fig.8  Allocation of inertial forces and seismic demand.
Fig.9  Calculation diagram of self-centering wall panels for seismic design.
parametervalue
wall length (mm)4200
wall width (mm)200
wall panel height (mm)30000
thickness of cover concrete (mm)20
Tab.5  Design parameters of self-centering wall sections: basic information
parametervalue
vertically distributed reinforcementΦF10@200
horizontally distributed reinforcementΦF10@200
configuration of densified stirrupsΦF10@50
height of stirrup densification (mm)800
material strength of steel strand (MPa)fpy = 1670
unbonded length of steel strand (mm)30000
initial prestressing force of steel strand0.5fpy
Tab.6  Design parameters of self-centering wall sections: steel material
parametervalue
material strength of confined concrete (MPa)34.1
vertical dimension of confined concrete (mm)800
horizontal dimension of confined concrete (mm)800
material strength of unconfined concrete (MPa)19.1
Tab.7  Design parameters of self-centering wall sections: concrete material
parametervalue on Grid 1/Grid 10value on Grid 4/Grid 7
steel strand configuration2?s15.29?s15.2
yield force of dampers (kN)270295
base moment at target base rotation angle (kN·m)2934.05255.2
Tab.8  Design parameters of self-centering wall sections: mechanical properties
Fig.10  Details of self-centering wall sections.
Fig.11  Configuration of slotted beams: (a) the ILEE shake-table test scheme; (b) engineering practice of the demonstration project.
Fig.12  Illustration of flexible wall-to-floor connections: (a) the ILEE shake-table test scheme; (b) engineering practice of the demonstration project.
Fig.13  Steel dampers (mini-BRBs): (a) configuration; (b) installation.
Fig.14  Numerical model of self-centering wall panels for seismic design.
Fig.15  Pushover analysis results: (a) wall panels along Grid 1/Grid 10; (b) wall panels along Grid 4/Grid 7.
Fig.16  Cyclic loading results: (a) wall panels along Grid 1/Grid 10; (b) wall panels along Grid 4/Grid 7.
record No.record namecharacteristic period (s)sourceearthquake level
SW01AW10.45artificialminor
SW02AW20.45artificialminor
SW03RSN67_SFERN_ISD0140.45naturalminor
SW04RSN1115_KOBE_SKI0000.45naturalminor
SW05RSN1161_KOCAELI_GBZ0000.45naturalminor
SW06RSN1245_CHICHI_CHY102-E0.45naturalminor
SW07RSN5823_SIERRA.MEX_CHI0000.45naturalminor
SW08AW30.50artificialmega
SW09AW40.50artificialmega
SW10RSN175_IMPVALL.H_H-E121400.50naturalmega
SW11RSN1499_CHICHI_TCU060-E0.50naturalmega
SW12RSN1546_CHICHI_TCU122-E0.50naturalmega
SW13RSN1594_CHICHI_TTN051-E0.50naturalmega
SW14RSN1833_HECTOR_SNC0900.50naturalmega
Tab.9  Information of seismic records
Fig.17  Acceleration spectra of seismic records: (a) seismic records used for elastic analysis; (b) seismic records used for elastoplastic analysis.
Fig.18  Inter-story drift results produced by time history analysis of minor earthquakes: (a) wall panels along Grid 1/Grid 10; (b) wall panels along Grid 4/Grid 7.
Fig.19  Inter-story drift results produced by time history analysis of mega earthquakes: (a) wall panels along Grid 1/Grid 10; (b) wall panels along Grid 4/Grid 7.
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