Seismic response analysis of assembled monolithic subway station in the transverse direction

Liu, Hongtao; Xu, Chengshun; Du, Xiuli

doi:10.1016/j.engstruct.2020.110970

Cited by 28 publications

(14 citation statements)

References 32 publications

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“…e seismic performance of the precast structure relies largely on the mechanical behavior of joints, which was also reached and confirmed by other studies [2]. In order to circumvent the drawbacks of the precast structure and directly adopt the existing cast-inplace concrete specification, the assembled monolithic concrete structures combined postpouring concrete and precast element are studied and have been recommended for applications in underground stations [2,3]. At present, precast underground structures are characterized by relatively complex conditions in terms of large-scale, complication, and diversified, which are different from that of aboveground structures.…”

Section: Introductionsupporting

confidence: 82%

“…Twenty-four grouted sleeves were utilized to connect the precast top column and low column, which have a rectangular cross-section with 700 mm × 900 mm; the precast upper and lower columns were connected by the core region. e details of longitudinal and transverse reinforcement were given in references [2,36]. In order to improve the construction convenience, the overlapping connection of steels was adopted for the semi-precast beam and concentrated in the beam-column joint core region.…”

Section: Design and Description Of Specimensmentioning

confidence: 99%

“…Since the dead and live loads of the slab surface were not considered, the function of slabs only provided the strengthening effect on the laminated beam. More details about slab connection were available in reference [2]. In addition to precast specimens, the geometry and dimensions of the cast-in-place specimen were the same except for obvious differences including continuous steel and construction method and excluding corbels.…”

Section: Design and Description Of Specimensmentioning

confidence: 99%

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Influence of Precast Member Corbels on Seismic Performance of Precast Beam‐Slab‐Column Joints

Liu

Kong

2021

Advances in Civil Engineering

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To improve the construction efficiency of precast structures, reinforced concrete corbels acted as support members are the most common connection method. This work presents the performance of a specific beam-to-column connection using corbels with different anchorage arrangements in precast beam-slab-column interior joint taken out from precast underground subway station. This paper investigates the performance of a specific full-scale precast concrete beam-slab-column interior joint with corbels and various connected methods subjected to low-cycle repeated loading. Meanwhile, the influences of concrete corbels (including column- and beam-end corbels) on the shear strength and deformation are investigated. The analyses results indicated that (1) corbels of the laminated beam (composite beam) can obviously improve the shear stress of the core region, which was beneficial for specimen design followed the strong-joint-weak-member concept; (2) a simplified approach to deal with the uneven thickness of corbels in the core region was proposed, which was utilized to study the effect of thickness on the shear performance of the core region; (3) the shear stress increased with respect to the compression stress, and the shear strain had a trend of decreasing according to calculating results using modified compression field theory; and (4) the deterministic expressions were proposed to predict the designed load of column corbels based on three different connection methods between laminated beams and core region of joint.

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Section: Introductionsupporting

confidence: 82%

Section: Design and Description Of Specimensmentioning

confidence: 99%

Section: Design and Description Of Specimensmentioning

confidence: 99%

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Influence of Precast Member Corbels on Seismic Performance of Precast Beam‐Slab‐Column Joints

Liu

Kong

2021

Advances in Civil Engineering

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“…One of the most well‐known tools for quantifying the damage index is conducting large number of experiments for structure 28–30 . Due to limitations of laboratory facilities and cost, only scaled models are used in most laboratory experiment, and the size effect 31,32 cannot be avoided.…”

Section: Introductionmentioning

confidence: 99%

“…One of the most well-known tools for quantifying the damage index is conducting large number of experiments for structure. [28][29][30] Due to limitations of laboratory facilities and cost, only scaled models are used in most laboratory experiment, and the size effect 31,32 cannot be avoided. Those limitations are further amplified in the course of investigating underground structures because of the soil-structure interaction effects that have to be considered in the model.…”

mentioning

confidence: 99%

Interstory drift ratio associated with performance objectives for shallow‐buried multistory and span subway stations in inhomogeneous soil profiles

Jiang

Naggar

et al. 2020

Earthq Engng Struct Dyn

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The interstory drift ratios (IDRs) associated with the performance objectives for the underground structure are not well defined. In this paper, four levels of performance objectives are defined for shallow-buried subway station structure: operational, immediate occupancy, life safety, and collapse prevention. In order to develop IDRs corresponding to these performance objectives, 18 subway station structures were selected for this study. Pushover analyses were conducted using three-dimensional finite-element models considering two conditions of seismic loading: vertical and horizontal ground motions; and horizontal ground motion only. Shear-displacement capacity curves of the 18 subway station structures were obtained, and IDR limits were defined for each structure based on the relationship between the capacity curves and performance objective. Statistical analysis of the results demonstrated that the IDR limits considering the vertical ground motion (characterized by the same frequency with horizontal component) are smaller than that without consideration of the vertical ground motion. Based on these results, the IDR limit of 0.05%, 0.21%, 0.46%, and 0.72% is assigned for the four performance levels, respectively, for rectangular frame underground structures. The performance evaluation applied to Daikai station based on the proposed limits is found to be consistent with the actual postearthquake damage observations. The proposed limits of IDR could provide some guidance to the seismic design of underground structures, and could form the basis for developing appropriate performance limits for seismic provisions in design codes relevant to underground structures. K E Y W O R D S interstory drift ratio, performance objective, rectangular frame, underground structure, vertical ground motion 1 INTRODUCTION The performance-based seismic design (PBSD) approach intends to achieve defined performance objectives for the seismic design of the structure in a future earthquake. Federal Emergency Management Agency (FEMA) report FEMA-273, 1 FEMA-274 2 introduced the first PBSD procedure, which was aimed at seismic reinforcement of existing buildings, and

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Effect of strata restraint on seismic performance of prefabricated sidewall joints in fabricated subway stations

et al. 2023

Front. Struct. Civ. Eng.

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Seismic response analysis of assembled monolithic subway station in the transverse direction

Cited by 28 publications

References 32 publications

Influence of Precast Member Corbels on Seismic Performance of Precast Beam‐Slab‐Column Joints

Influence of Precast Member Corbels on Seismic Performance of Precast Beam‐Slab‐Column Joints

Interstory drift ratio associated with performance objectives for shallow‐buried multistory and span subway stations in inhomogeneous soil profiles

Effect of strata restraint on seismic performance of prefabricated sidewall joints in fabricated subway stations

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