Experimental study on seismic performance of T‐shaped partly precast reinforced concrete shear wall with grouting sleeves

Li, Jianbao; Fan, Qiaoqiao; Lü, Xilin; Wang, Yan

doi:10.1002/tal.1632

Cited by 47 publications

(27 citation statements)

References 31 publications

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“…e connections of the precast concrete shear wall components were crucial to the mechanical performance of the structure [5], and the vertical connection affects the integrity and energy dissipation of the buildings. Previous studies and analyses have shown that the precast concrete shear walls have the dominant bearing capacity and energy dissipation [6,7]. According to the criterion of the American, European, Chinese, and Japanese standards, the performance of some precast concrete shear walls can reach the level of cast-in-situ shear walls [8,9].…”

Section: Introductionmentioning

confidence: 99%

Research on Seismic Performance of an Innovative Upper‐Lower Half‐Story Precast Shear Wall

Sun¹,

Wang

Xu³

2021

Advances in Civil Engineering

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An innovative precast connection (the precast connection installed in the middle of the shear wall) was proposed for the shear wall. To verify the effectiveness of the proposed precast connection, two cast-in-situ shear walls (RCW1 and RCW2) and three precast shear walls (PCW1, PCW2, and PCW3) were manufactured and investigated. The construction joints were inserted in the bottom and the middle for RCW1 and RCW2; and the structural glue horizontal connection, structural glue cogged connection, and cast-in-situ plug grouting connection were utilized for PCW1, PCW2, and PCW3, respectively. The failure mode, loading capacity, ductility, stiffness degradation, and energy dissipation of specimens were analyzed under the horizontal low-frequency cycled loading. Simultaneously, a numerical simulation was carried out on the ABAQUS software, and simulation results were consistent with experimental results. The result showed that the moment-shear failure occurred in all the specimens except PCW1; the bottoms of PCW2 and PCW3 were still vulnerable regions. The bearing capacity and the ductility of RCW2 were improved to different degrees by installing the construction joint in the middle of the shear wall. Specifically, the structural glue cogged connection and the cast-in-situ plug grouting connection have no obvious effect on the reduction of bearing capacity but can improve the ductility of the specimen; the stiffness degradation and energy dissipation of RCW1, RCW2, PCW2, and PCW3 were basically the same.

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Section: Introductionmentioning

confidence: 99%

Research on Seismic Performance of an Innovative Upper‐Lower Half‐Story Precast Shear Wall

Sun¹,

Wang

Xu³

2021

Advances in Civil Engineering

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“…The PC model attained a good integrity and complied with the requirements of the current seismic design code. Lu et al 11,12 and Li et al 13,14 studied the seismic performance of precast concrete shear walls with different joints and shapes. Results show that the presented PC shear walls have good integrity and reliable seismic performance.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on the hysteretic behavior of precast concrete walls with energy‐dissipated dry connections

Zhang

Chen

et al. 2020

Structural Concrete

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A new method of assembling precast concrete (PC) wall panels is proposed to establish a stable and reliable earthquake‐resistant system. The dry‐connection method is recommended by welding energy‐absorbing connectors with mild steel plates at the vertical joints between adjacent walls. The connectors replace cast‐in‐place (CIP) constructions to rapidly and efficiently connect wall panels and utilize the deformations occurring due to the vertical relative displacement of the wall panels to dissipate energy and mitigate an excessive seismic response. To evaluate the effectiveness of the new connection approach, CIP and connector‐wall assembly specimens with different aspect ratios were designed and tested under cyclic lateral force‐displacement controlled loading. Evaluation of the measured experimental results indicate that the proposed dry‐connection method can be adopted to achieve proper ductility and energy dissipation levels while maintaining a sufficient level of connection strength and stiffness of the PC wall system.

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“…For example, different types of shear walls have been studied, including linear type, I-shaped, L-typed, and T-shaped. Several studies focused on the influence on the seismic behavior of these shear walls exerted by the following factors: the length of the splicing zone, the length of the ribs, the material of the splicing zone, and the form of the splicing zone(Sun et al [11], Song et al [12], LU et al [13], JGJ101-96 [14], Smith et al [15], Pekau et al [16], Soudki et al [17], LI et al [18], Soudki et al [19]). Nevertheless, there are few studies on the prefabricated frame-shear structure.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study on Mechanical Properties of Concrete-Filled Steel Tube (Cfst) Key-Connected Prefabricated Wall and Column

2020

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The prefabricated structures have the advantages of high construction speed, energy efficiency, environmental friendliness, and low labor demand. At present, the connection of fabricated concrete structural components mainly relies on connecting the stressed steel bars of the prefabricated components using a variety of methods, and then casting concrete or grout at the joints. This requires a large quantity of wet work, and most studies on this topic focused on frame structures and shear wall structures. The research on frame-shear wall structures is still rare. To fill this gap, a new type of connecting prefabricated shear wall and prefabricated frame column in the assembled frame-shear structure by using concrete-filled steel tubs (CFST) keys is proposed with experimental study. This paper analyzes the differences in the mechanical properties and the failure modes of three kinds of structures , i.e. the wall and column connected by CFST keys, the wall and column connected by the CFST keys with concrete block placed between t hem, and the wall and column connected by the cast-in-place method. This paper also investigates the mechanical properties and failure modes of the first kind of structure when the failure of shear wall is caused by the CFST keys. The test results show tha t the CFST keys with the reinforced concrete block placed between them are superior to the cast-in-place structures in terms of wall-column connection mode, and the bearing capacity and ductility of the structure, while sharing similar initial stiffness of the structure.The CFST keys connection mode shows engineering feasibility and good seismic performance. When designing this type of connection, the strength of the CFST keys should be moderately controlled. If the strength level is too high, the shear resistance of the overall structure will decrease.

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Experimental study on seismic performance of T‐shaped partly precast reinforced concrete shear wall with grouting sleeves

Cited by 47 publications

References 31 publications

Research on Seismic Performance of an Innovative Upper‐Lower Half‐Story Precast Shear Wall

Research on Seismic Performance of an Innovative Upper‐Lower Half‐Story Precast Shear Wall

Experimental investigation on the hysteretic behavior of precast concrete walls with energy‐dissipated dry connections

An Experimental Study on Mechanical Properties of Concrete-Filled Steel Tube (Cfst) Key-Connected Prefabricated Wall and Column

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