scholarly journals A STUDY ON ANCHOR-BOLT-YIELD-TYPE EXPOSED COLUMN-BASE WITH MULTI-ROWS OF ANCHOR-BOLTS SUBJECTED TO VARIABLE AXIAL-FORCE AND BENDING

2011 ◽  
Vol 76 (660) ◽  
pp. 397-405 ◽  
Author(s):  
Teruaki YAMANISHI ◽  
Takao TAKAMATSU ◽  
Hiroyuki TAMAI ◽  
Kiichirou SAWADA ◽  
Akira MATSUO
Keyword(s):  
Axial Force ◽  
Anchor Bolt ◽  
Anchor Bolts ◽  
Column Base

scholarly journals SIMPLE ANALYSIS MODEL FOR EXPOSED COLUMN-BASE CONSIDERING EFFECT OF INITIAL TENSIONING OF ANCHOR BOLTS AND COLUMN AXIAL FORCE

2008 ◽  
Vol 73 (628) ◽  
pp. 991-997 ◽  
Author(s):  
Hiroyuki TAMAI ◽  
Teruaki YAMANISHI ◽  
Tsuyoshi SHIRAKI ◽  
Takao TAKAMATSU ◽  
Akira MATSUO
Keyword(s):  
Axial Force ◽  
Analysis Model ◽  
Simple Analysis ◽  
Anchor Bolts ◽  
Column Base

Behavior of exposed column-base connections with four internal anchor bolts under seismic loading

Structures ◽  
2021 ◽  
Vol 34 ◽  
pp. 105-119
Author(s):  
Jianrong Pan ◽  
Ruike Huang ◽  
Jing Xu ◽  
Peng Wang ◽  
Zhan Wang ◽  
...  
Keyword(s):  
Seismic Loading ◽  
Anchor Bolts ◽  
Base Connections ◽  
Column Base

scholarly journals Comparison of Pigtail with J Anchor Bolt in Normal Concrete

2018 ◽  
Vol 150 ◽  
pp. 03001
Author(s):  
Mohamad Hairi Osman ◽  
Mohamad Nur Mustaqim Abd Shukor ◽  
Suraya Hani Adnan ◽  
Mohamad Luthfi Ahmad Jeni ◽  
Mohd Sufyan Abdullah ◽  
...  
Keyword(s):  
Load Capacity ◽  
Testing Machine ◽  
Tensile Load ◽  
Steel Structure ◽  
Maximum Load ◽  
Anchor Bolt ◽  
Average Value ◽  
Two Samples ◽  
Bending Radius ◽  
Anchor Bolts

Anchor bolts have been used to attach the steel structure of concrete and transfer load into the concrete. Anchor bolts in concrete are to withstand the shear force as they connect steel beams to the reinforced concrete foundations. The research was carried out to increase the understanding and investigating the performance of anchor bolts Pigtail since there is a lack of research on the bolt and to compare it with anchor bolts J which have been widely used by the industry. According to the methodology, testing the tensile load was used in this research to get a maximum load capacity of the anchor bolt in concrete. The sample was embedded in concrete cylinders of 75mm radius and 300mm height. Depths of embedment were 200mm, 230mm, and 260mm. The Universal Testing Machine, UTM was used to test the strength of tensile. 12 samples were used, each type and depth used two samples to get the average value using concrete grade 30. The samples underwent the process of curing for 28 days. The anchor bolts J used a 40mm bending radius and the length of hook was 100mm. Anchor bolts pigtail also used the 10 bending radius with depth of 8mm that have been compressed using 16mm radius rigs with a load of 500kN. Results of the research showed the depth of 260mm for Pigtail almost the same with J 60.529kN and 53.628kN and anchor bolts J were 75.557kN and 76.332kN. Difference of the values was not too far vary when compared with the 200mm and 230mm depths. Each comparison showed the ability of each bolt and anchor bolt failure occurred. Performance of the anchor bolts pigtail can be used on a structure or a higher load at an embedment of 260mm. Embedment of 200mm and 230mm can be used on a lighter load if steel material saving is a priority in every usage.

A Numerical Study on the Pull-Out Strengths of Anchor Bolts Embedded in Concrete Using the Smoothed Particle Hydrodynamics Method

2016 ◽  
Vol 711 ◽  
pp. 1111-1117 ◽  
Author(s):  
Yoshimi Sonoda
Keyword(s):  
Smoothed Particle Hydrodynamics ◽  
Failure Modes ◽  
Numerical Study ◽  
Failure Process ◽  
Embedment Depth ◽  
Anchor Bolt ◽  
Pull Out ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Anchor Bolts

The strength of an anchor bolt in concrete structure under pull-out load is usually designed by three possible failure modes such as fracture of anchor bolt, cone failure of concrete and bond failure between anchor bolt and concrete. In general, the design load is considered the smallest load corresponding to the aforementioned failure mechanisms. However, unexpected failure often occurs in the anchorage zone due to the complex failure or the change of failure condition. Therefore, it is important to develop the accurate analysis method of ultimate load bearing capacity of the anchor bolt. In this study, we conducted an analytical study using Adaptive Smoothed Particle Hydrodynamics (ASPH) in order to simulate the failure process of anchorage zone and discussed the effect of embedment depth of anchor bolts on their ultimate strength.

Prestressed Anchor Bolt Impact on the Deformation of Composite Soil Nailing

2013 ◽  
Vol 353-356 ◽  
pp. 11-15
Author(s):  
Deng Qun Wang ◽  
Yan Peng Zhu
Keyword(s):  
Axial Force ◽  
Horizontal Displacement ◽  
Vertical Displacement ◽  
Soil Nailing ◽  
Foundation Pit ◽  
Obvious Effect ◽  
Anchor Bolt ◽  
Soil Nail ◽  
Finite Element Software ◽  
The Impact

Finite element software was employed to establish a model to simulate the compound soil nailing. The model simulates the process of constructing prestressed compound soil nailing. Compared the condition prestressed with no prestress, analyzed the Impact of prestress anchor on the deformation in the process of construction and the effect on axial force of soil nail. Applying prestress is able to control the horizontal displacement obviously, but has not obvious effect on vertical displacement, especially place the anchor bolt at the lower part of the slope. In the process of construction, prestress has an advance effect on the deformation of foundation pit and the axial force of soil nails near the anchor bolt.

scholarly journals An Analytical Study on the Pull-Out Strength of Anchor Bolts Embedded in Concrete Members by SPH Method

2021 ◽  
Vol 11 (18) ◽  
pp. 8526
Author(s):  
Chi Lu ◽  
Yoshimi Sonoda
Keyword(s):  
Load Capacity ◽  
Seismic Retrofitting ◽  
Embedment Depth ◽  
Structural Members ◽  
Sph Method ◽  
Anchor Bolt ◽  
Failure Patterns ◽  
Pull Out ◽  
Anchor Bolts ◽  
Pull Out Strength

As an important method for connecting structural members, anchor bolts have been installed in many situations. Therefore, accurate evaluation of the pull-out strength of anchor bolts has always been an important issue, considering the complicated actual installation conditions and the problem of aging deterioration of the structural members. In general, the patterns of pull-out failure of anchor bolts can be classified into three types: adhesion failure, cone failure, and bolt break. However, it sometimes shows a mixed fracture pattern, and it is not always easy to predict the accurate pull-out strength. In this study, we attempted to evaluate the pull-out strength of anchor bolts under various installation conditions using SPH, which can analyze the crack growth process in the concrete. In particular, the anchor bolt-concrete interface model was introduced to SPH analysis in order to consider the bond failure, and it was confirmed that various failure patterns and the load capacity could be predicted by proposed SPH method. After that, the influence of several parameters, such as bond stress limit, anchor bolt diameter, and the anchor bolt embedment depth on the failure patterns and the load capacity, were investigated by numerical calculation. Furthermore, several useful suggestions on the pull-out strength of anchor bolts under improper installation conditions, such as the ends of members for the purpose of seismic retrofitting, are presented.

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