Seismic performance of short precast bridge columns with grouted splice sleeve (GSS) connectors for shear study: Quasi-static cyclic test and analytical estimation. Issue 165 (February 2023)

• Record Type: Journal Article
• Authors: Wang, Zhiqiang; Zhang, Jiyan; Lv, Hao; Yan, Xingfei; Li, Tiantian; Qu, Hongya
• Is Part Of: Soil dynamics and earthquake engineering. Issue 165(2023)
• Publication Date: 2023-02
• Subjects: Quasi-static cyclic test -- Precast column -- Grouted splice sleeve -- Shear strength -- Failure mechanism -- Analytical solution; Soil dynamics -- Periodicals; Earthquake engineering -- Periodicals; Sols -- Dynamique -- Périodiques; Génie parasismique -- Périodiques; 624.176205
• DOI: 10.1016/j.soildyn.2022.107659
• Languages: English
• ISSNs: 0267-7261

Abstract

Abstract: In this study, shear damage development of four precast bridge columns with different connection design details are first examined via quasi-static test. The short columns are of identical dimension and reinforcement arrangement for both pier and footing segments, and the span-to-depth ratio is 0.85 for shear study. The connection utilizes grouted splice sleeve (GSS) couplers for all four specimens. Different bonding materials are compared, effectiveness of shear keys is investigated, and variation of steel rebar grades is carried out. It is found that epoxy retain lower bond strength than high strength mortar, lower grade of longitudinal rebar significantly reduces shear strength of bridge column, and shear keys are of limited effectiveness on the overall shear damage development. An analytical method for shear strength calculation is then proposed and calibrated based on different test results, which incorporates possible influencing factors for shear strength estimation. Maximum difference between the test results and estimated strength values are less than 10%, and it indicates that the proposed method can be used as a reference for shear strength estimation of short precast bridge columns for seismic strength estimation. Highlights: Quasi-static test of four short precast columns with different design is performed. Seismic performance of the specimens towards shear strength is investigated. An analytical method is proposed to estimate column shear strength for seismic study. The proposed analytical model effectively estimates shear strength of precast columns.