Inter shear transfer of unbonded prestressing precast segmental bridge column dry joints

被引：23
|
作者：
Bu, Zhan-Yu [1 ]
Wu, Wei-Ye [1 ]
机构：
[1] Ningbo Univ, Fac Architectural Civil Engn & Environm, Ningbo 315211, Zhejiang, Peoples R China
来源：
ENGINEERING STRUCTURES | 2018年 / 154卷
基金：
中国国家自然科学基金;
关键词：
Segmental column; Dry joint; Shear strength; Joint test; Damaged pattern; Regression analyses; Finite element model; FRACTURE-MECHANICS APPROACH; CONCRETE; STRENGTH; BEHAVIOR; BEAMS; KEY; PERFORMANCE; FAILURE;
D O I：
10.1016/j.engstruct.2017.10.048
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The shear performance of precast segmental bridge column (PSBC) epoxy-free dry joints was investigated. Ten PSBC dry joint specimens were tested under monotonic direct shear loading. The design parameters include sectional shape, with or without shear keys, key number and geometry, and confining stress. The shear resistance-relative vertical displacement curves were recorded. The damage patterns and failure mechanism of tested specimens were analyzed. Shear strength formulas for prismatic, castellated, and flat dry joint were derived through data regression. The applicability of proposed formulas together with those from literature was investigated. Finally a finite element (FE) model was calibrated to study the friction contribution to shear capacity at various confining stresses.
引用
收藏
页码：52 / 65
页数：14
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