A flexure-capacity design method and seismic fragility assessment of FRP/steel double-reinforced bridge piers

2019 ◽  
Vol 16 (9) ◽  
pp. 1311-1325
Author(s):  
Daoguang Jia ◽  
Jize Mao ◽  
Qingyong Guo ◽  
Zailin Yang ◽  
Nailiang Xiang
Keyword(s):  
Design Method ◽  
Bridge Piers ◽  
Seismic Fragility ◽  
Capacity Design ◽  
Flexure Capacity

Influence of Massive Substructures on Capacity Design Method

2016 ◽  
Vol 106 (10) ◽  
pp. 357-362
Author(s):  
Yudong MAO ◽  
Jianzhong LI
Keyword(s):  
Design Method ◽  
Capacity Design

Research on Deformation Capacity Design Method of Steel High Performance Concrete Structural Walls

2010 ◽  
Vol 163-167 ◽  
pp. 1540-1546
Author(s):  
Liang Bai ◽  
Tian Hua Zhou ◽  
Xing Wen Liang
Keyword(s):  
Axial Load ◽  
High Performance ◽  
High Performance Concrete ◽  
Design Method ◽  
Load Ratio ◽  
Deformation Capacity ◽  
Capacity Design ◽  
Structural Walls ◽  
Axial Load Ratio ◽  
Characteristic Value

The cyclic loading test of three steel high performance concrete(SHPC) structural walls was conducted and the failure pattern of the structural walls under the combined effect of axial force, bending moment, and shear force was researched. Based on the experimental results, the displacement-based deformation capacity design method was proposed for SHPC structural walls. It is obtained for the interrelated relationships among the ultimate drift ratio, the axial load ratio, the characteristic value of stirrup content and the aspect ratio. It is concluded that the increasing the characteristic value of stirrup content and limiting the axial load ratio were effective means to improve ductility. The characteristic value of stirrup content of SHPC structural walls with different ultimate drift ratio and axial load ratio were proposed and the conclusion can be referred by the design of SHPC structural walls.

scholarly journals Performance of Six- and Ten-story Reinforced Concrete Buildings Designed by using Modified Partial Capacity Design (M-PCD) Method with 70% Shear Force Ratio

2021 ◽  
Vol 23 (2) ◽  
pp. 131-137
Author(s):  
Pamuda Pudjisuryadi ◽  
F. Wijaya ◽  
R. Tanuwijaya ◽  
B.C. Prasetyo ◽  
Benjamin Lumantarna
Keyword(s):  
Reinforced Concrete ◽  
Shear Force ◽  
Design Method ◽  
Base Shear ◽  
Reinforced Concrete Buildings ◽  
Capacity Design ◽  
Concrete Buildings ◽  
Force Ratio ◽  
Total Base ◽  
Nonlinear Static Procedure

One design alternative of earthquake resistant building is Partial Capacity Design (PCD) method. Unlike the commonly used capacity design method, PCD allows a safe failure mechanism which is called partial sidesway mechanism. In this mechanism, all beams and some columns are allowed to experience plastic damages while some selected columns are designed to remain elastic (called elastic columns). A new approach to predict the required strengths needed to design each structural member, called modified-PCD (M-PCD) is proposed. In this research six- and ten-story reinforced concrete buildings were designed using M-PCD, and their seismic performances are investigated. The base shear force resisted by the elastic columns was set to approximately 70% of the total base shear. Both nonlinear static procedure (NSP) and nonlinear dynamic procedure (NDP) are used to analyze the structures. The results show that the expected partial side sway mechanism is observed, and the drifts of the buildings are acceptable.

The Design and Analysis of Pile Protection Devices for the Qiantang River Bridge

2010 ◽  
Author(s):  
Jin Pan ◽  
Weiguo Wu ◽  
Mingcai Xu
Keyword(s):  
Force Control ◽  
Impact Force ◽  
Design Method ◽  
Bridge Piers ◽  
Deformation Characteristics ◽  
Dynamic Finite Element ◽  
Qiantang River ◽  
Traditional Design ◽  
Protection Devices ◽  
Explicit Dynamic

According to the Qiantang River Bridge project, the pile structures are adopted as protection devices for bridge piers. Because the pile structures are not contact with bridge piers, the traditional design method of impact force control is no longer applicable. Therefore, this paper studies on the large deformation characteristics of piles, takes the interaction between the piles and soil into account by “m” method, puts forward a new anti-collision design method, and at last determined the form and dimension of pile structures. LS-DYNA, a nonlinear explicit dynamic finite-element code, was used for analysis. The protection devices are used to Qiantang River Bridge, and then some useful conclusions were achieved.

Investigation of a combined failure mode for screw anchors under tension

2020 ◽  
Vol 23 (13) ◽  
pp. 2803-2812
Author(s):  
Zhao Chen ◽  
Somayeh Nassiri ◽  
Anthony Lamanna
Keyword(s):  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Regression Model ◽  
Failure Mode ◽  
Design Method ◽  
Test Results ◽  
Capacity Design ◽  
Tension Tests ◽  
Combined Mode ◽  
Combined Failure

A modified concrete capacity design method is available to predict the ultimate tensile strength ( Nu) of screw anchors. Screw anchors commonly fail in a combination of concrete breakout and pullout modes. This combined mode is not distinguished from the breakout mode in the modified concrete capacity design method, which may cause confusions to designers. To investigate the Nu of the combined mode ( Ncomb), this study included 144 unconfined tension tests on screw anchors from three manufacturers in three diameters and two effective embedment depths ( hef) per diameter. Approximately 80% of the tested anchors failed in the combined mode. The differences in Ncomb among the three manufacturers were insignificant despite their varied thread design. Ncomb was found to be linearly correlated to the parameter hef 1.3 but was found independent of the anchor diameter. A regression model was developed to specifically predict Ncomb. The model showed a good fit with the test results.

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